AC Stulz MiniSpace [PDF]

Zitiervorschau

A/C UNITS

MINI-SPACE 380-415/3/50

INDEX 20 Issue 6.05

AIR CONDITIONING PRECISION A/C UNITS

OPERATING INSTRUCTIONS © STULZ GmbH, Hamburg

E/0605/20/2

Contents

Page

1. Safety instructions.................................................................................................. 5 2. Type code .............................................................................................................. 7 3. Description ............................................................................................................ 8 3.1 Design/Refrigeration diagram CCD 41-121 A ............................................... 12 3.2 Design/Refrigeration diagram CCD 171-201 A ............................................. 14 3.3 Design/Refrigeration diagram CCU 41-121 G ............................................... 16 3.4 Design/Refrigeration diagram CCU 171-201 G ............................................. 18 3.5 Application ranges ........................................................................................ 20 4. Technical data ...................................................................................................... 21 4.1 Sound data .................................................................................................... 27 4.2 Electrical connected load .............................................................................. 28 4.3 Unit characteristics, air circuit ........................................................................ 29 4.4 Dimensions ................................................................................................... 34 5. Installation and commissioning............................................................................ 35 5.1 Dismantling and disposal .............................................................................. 44 6. Operation and maintenance................................................................................. 45 7. Causes and elimination of faults .......................................................................... 57 8. Refrigerant piping ................................................................................................ 65 9. Options ................................................................................................................ 74 9.1 Steam humidifier ........................................................................................... 74 9.2 Heating .......................................................................................................... 84 9.3 Raised floor stand ......................................................................................... 86 9.4 Refrigerant circuit option ............................................................................... 89 9.5 Air circuit option ............................................................................................. 92 9.6 Control option .............................................................................................. 107 Appendix ............................................................................................................... 109 Customer service .................................................................................................. 110

E/0605/20/3

These operating instructions are to be read carefully and complied with before installing and operating the A/C unit. The male triangular wrench and brief operating instructions are to be displayed in a visible location in the immediate vicinity of the A/C unit

It is absolutely essential to comply with the measures listed in the chapter giving safety instructions. A/C units of types A, G have an air conditioning system which contains refrigerant.

Compressor Phase Rotation! Both the scroll compressor and fan motor are dependent on correct phase rotation. The scroll compressor and fan motor will be checked at the factory before dispatch. On site, if the fan rotation (as indicated on the fan housing) is incorrect, the rotating field of the compressor will also be incorrect. The rotating field must be corrected by changing two phases of the power supply at the isolator.

E/0605/20/4

1. Safety instructions General These operating instructions contain basic information which is to be complied with for installation, operation and maintenance. They must therefore be read and complied with by the fitter and the responsible trained staff/operators before assembly and commissioning. They must be permanently available at the place where the system is used. Freon 407c refrigerants are used in STULZ A/C units. Refrigerants are volatile, or highly volatile fluorinated hydrocarbons which are liquefied under pressure. They are incombustible and not hazardous to health when used as intended.

First aid measures -

If health problems occur during or after handling fluorinated hydrocarbons, a doctor is to be consulted immediately. The doctor is to be informed that the work involved the use of fluorinated hydrocarbons. In the case of acute effects, the casualty is to be brought into the fresh air as quickly as possible. The casualty must never to be left unsupervised. If the casualty is not breathing, initiate mouth-to-mouth resuscitation immediately. If the casualty is unconscious or very dazed he or she must not be given any liquid. Splashes of fluorinated hydrocarbons in the eyes can be blown out or fanned out by an assistant. Then rinse with water. Notes for the doctor: Do not give any preparations from the adrenalin ephedrine group (nor any noradrenaline) to treat shock. Attain further information from the poison accident centres.

Handling refrigerants The following measures are to be complied with when handling refrigerants: - Refrigerants have a narcotic effect when inhaled in high concentrations. - Safety glasses and safety gloves are to be worn. - Do not eat, drink or smoke at work. - Liquid refrigerant must not get onto the skin (risk of burns). - Only use in well ventilated areas. - Do not inhale refrigerant vapours. - Warn against intentional misuse. - It is absolutely essential to comply with the first aid measures if accidents occur.

Installation of refrigerant systems It is absolutely essential to comply with the following measures when installing refrigerant systems: - Pressure-test the system with nitrogen - Eliminate leaks in refrigerant systems immediately. - Do not allow refrigerant to escape in to the atmosphere during filling and repair work. - Ensure extraction or good ventilation in enclosed areas. - The room is to be evacuated immediately if high concentrations of refrigerant suddenly occur. The room may only be entered again after adequate ventilation. - If unavoidable work is required in the presence of a high concentration of refrigerant, breathing apparatus must be worn. This does not mean simple filter masks. Comply with breathing protection data sheet.

E/0605/20/5

-

-

The refrigerant is to be extracted before soldering and welding work on refrigerant systems. Only carry out welding and soldering work on refrigerant systems without refrigerant in properly ventilated areas. If there is a pungent odour, the refrigerant has decomposed due to overheating. Leave the room immediately. The room may only be entered after proper ventilation or only with a filter mask for acidic gases. Refrigerants containing FCs contribute to the global warming and must be disposed of in accordance with the regulations, i.e. only by companies specially qualified under § 191 of the water resources management law and licensed as recognised disposal companies for refrigerants.

Personnel qualification and training The personnel responsible for operation, maintenance, inspection and assembly must have the appropriate qualifications for this work.

Hazards resulting from non-compliance with the safety instructions Non-compliance with the safety instructions can endanger personnel and the system. Non-compliance with the safety instructions result in the forfeiture of any claims for damage.

Safety-conscious work The safety instructions listed in these operating instructions, national regulations in force on accident prevention, as well as company work, operating and safety instructions must be complied with.

Safety instructions on maintenance, inspection and assembly work The operator must ensure that all maintenance, inspection and assembly work is carried out by authorised and qualified specialist staff who have made an in-depth study of the operating instructions. Work on the system is only to be carried out when it is shut down. It is absolutely essential to comply with the procedure for shutting down the system described in the operating instructions. Before maintenance work, the A/C unit must be switched off at the master switch and a warning sign displayed to prevent unintentional switching-on. The master switch must be checked to ensure the A/C unit is in the de-energized state. The preliminary measures in the "Installing/commissioning" section are to be complied with before recommissioning.

Independent conversion and manufacture of replacement parts The system may only be converted or modified after consultation with STULZ. Original replacement parts and replacement parts/accessories authorised by STULZ are an aid to safety.

Unacceptable operating methods The operating safety of the system is only guaranteed when it is used as intended (see operating instructions, page 8). The limit values stipulated in the technical data must not be exceeded under any circumstances.

E/0605/20/6

2. Type code The type code represents the unit variant of your A/C unit and can be found on the rating plate.

The rating plate is located in the door in front of the electrical compartment.

Product range Blow-out direction Output of unit Number of refrigeration circuits Type of design

Explanation

C

C

D

20

1

Unit variants

A A,G 1 4, 6, 8, 12, 17, 20

D,U CC = Compact Clima

Page code E / 0605 / 20 / 7 Page code: D - German E - English F - French U - US English

Page number Date of issue month/year

Index number

E/0605/20/7

3. Description General This A/C unit is used for the air conditioning of rooms. It is available in various designs, as described under method of operation. The A/C unit is to be installed in accordance with the "Assembly/commissioning" section. The A/C unit is only operated via the controller.

Intended use The A/C unit is used to control room temperature and air humidity. Any use beyond this is not deemed to be use as intended. STULZ is not liable for any damage resulting from such misuse. The operator alone bears the risk.

Design of an A/C unit The A/C unit is divided into three areas, an air, water and electrical section. The evaporator, the expansion valve, the fan and the optional electrical heating are housed in the air section. The air to be cooled is drawn in by the fan and flows through the evaporator. All the electronics and electrics to control and monitor the A/C unit are located in the electrical section. All the wiring of the A/C unit comes together in the electrical section and is connected here. The compressor, collector, condenser and the G-units as well as various fittings and pressure switches are housed in the low temperature section.

E/0605/20/8

Electrical section Air section

Refrigerant section

Basic components/function of refrigerant circuit The refrigeration circuit of the A/C unit consists of a compressor, a condenser, an expansion valve and an evaporator. These components are connected by pipelines to a sealed refrigerant circuit. The compressor is used to compress the refrigerant and maintain the refrigerant flow. The heat of the refrigerant is given up in the condenser. The expansion valve with pressure compensation is used as a throttling component in the refrigerant circuit. The evaporator extracts the heat from the air flowing through. All components of the refrigerant circuit are designed for a maximum operating pressure of 25 bar. On air conditioning units of type A (A-units), the condenser is not in the A/C unit but located externally. The heat of the room is absorbed by the gaseous low temperature refrigerant in the evaporator. The gaseous refrigerant is compressed in the compressor and enters the condenser. The condenser gives up the heat absorbed and liquefies the refrigerant which is under high pressure. The liquid refrigerant enters the expansion valve and is from there conducted back to the evaporator at low pressure and low temperature. Thus low pressure and low temperature prevails in the evaporator whilst high pressure and high temperature exist in the condenser.

Dehumidifying economy circuit The A/C units of the upper capacity range (17 and 20 kW) are equipped with a dehumidify-ing economy circuit. Here approx. one third of the evaporator is switched off via a solenoid valve. As a result the evaporation temperature of the refrigerant is reduced and the air flowing past the evaporator falls below the dew point. The moisture contained in the air condenses in the evaporator and is carried away. At the A/C units of the lower capacity range (4 to 12 kW) a dehumidification is achieved by a reduction of the air flow. The fan speed can be adjusted manually, a precise description of the function can be found in the section "operation and maintenance" on page 45.

E/0605/20/9

Method of operation of A/C unit There are the design types A and G in the MINI-SPACE A/C units, the method of operation is as shown below, in respect of heat flow:

Method of operation of type A A/C unit Air conditioned room

Condenser

Evaporator

A/C unit

The room air drawn in by the fan flows through the evaporator. In this process heat is drawn from the room air and given up to the refrigerant. The refrigerant gives up the heat to the outside air via an external aircooled condenser. The A/C unit and the external condenser are connected with each other by a sealed refrigerant circuit.

Room air Refrigerant Outside air

Method of operation of type G A/C unit Air conditioned room

Drycooler Evaporator Condenser

A/C unit

Room air Refrigerant Cooling water Outside air

E/0605/20/10

The room air drawn in by the fan flows through the evaporator. In this process heat is drawn from the room air and given up to the refrigerant. The refrigerant gives up the heat to a water/glycol mixture via a condenser con-tained in the A/C unit. The cooling water flows through an air-cooled external dry cooler which gives up the heat to the outside air.

Air flow A distinction is made between downflow and upflow A/C units. On downflow units the room air is drawn into the A/C unit from above and passed down into the raised floor. On upflow units the room air is drawn in from the front of the A/C unit and passed upwards.

Downflow

Upflow

Room air/return air

Supply air

Room air/return air

Supply air

Preventative safety devices The A/C units have various safety devices to avoid malfunctions. A non-return valve is fitted in the liquid line on A-units which prevents backflow of refrigerant into the condenser. In the liquid line of all units there is a filter drier, a sight glass and a solenoid valve which shuts off the refrigerant flow when the A/C unit is shut down.

Safety devices The A/C unit is protected against insufficient operating pressure by a low-pressure switch. If the operating pressure is fallen below, a warning signal appears on the display and the A/C unit is put out of operation. A high-pressure switch is triggered at an excessive operating pressure of 24.5 bar and switches off the compressor. A warning signal on the display of the controller appears. A safety valve is fitted on the collector as the last link in the chain, which opens at a pressure of 27.5 bar.

E/0605/20/11

3.1 Design of CCD 41 - 121 A (Downflow)

17

11

19 10 18

1

16 15

6

14

5

12

13 4

E/0605/20/12

3 7

Refrigeration diagram CCD/U 41 - 121 A

14 13 12

7

to external condenser

11

10

6

5

4 12

3 8

8

1

15

1. 2. 3. 4. 5. 6. 7. 8. 9.

Fan Motor Compressor Filter drier Sight glass Solenoid valve in liquid line Collector Schrader valve -

10. 11. 12. 13. 14. 15. 16. 17. 18. 19.

16

Expansion valve Evaporator Shutoff valve Safety valve Non-return valve (liquid line) Low-pressure pressostat High-pressure pressostat Temp./humidity sensor (behind elec. compart.) Master switch Electrical compartment

E/0605/20/13

3.2 Design of CCD 171/201 A (Downflow) 17

11

9

10

19 1

2 16 15 6 5

14 7

4

12 3

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Refrigeration diagram CCD/U 171/201 A

14

12

13 8

7

11

10

9

6

5

to external condenser

4

3 8 1

15

1. 2. 3. 4. 5. 6. 7. 8. 9.

Fan Motor Compressor Filter drier Sight glass Solenoid valve in liquid line Collector Rotalock valve Dehumidifier valve

10. 11. 12. 13. 14. 15. 16. 17. 18. 19.

Rotalock valve only at CCD/U 201 16

Expansion valve Evaporator Shutoff valve Safety valve Non-return valve (liquid line) Low-pressure pressostat High-pressure pressostat Temp./humidity sensor (behind elec. compart.) Master switch Electrical compartment

E/0605/20/15

3.3 Design of CCU 41 - 121 G (Upflow)

16

1

18

10

17 9

15 14

6 13

5 12 4 11

E/0605/20/16

3 7

Refrigeration diagram CCD/U 41 - 121 G

12 19

11

7 10

13 9

6

5

4

3 8

1

8

14

1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Fan Motor Compressor Filter drier Sight glass Solenoid valve in liquid line Collector Schrader valve Expansion valve Evaporator

11. 12. 13. 14. 15. 16. 17. 18. 19.

15

Shutoff valve Safety valve Condensor Low-pressure pressostat High-pressure pressostat Temp./humidity sensor (behind elec. compart.) Master switch Electrical compartment Vent valve

E/0605/20/17

3.4 Design of CCU 171/201 G (Upflow) 16

2 1

8

10 18

9 15 6 5 13 4 7 11 3

E/0605/20/18

Refrigeration diagram CCD/U 171/201 G

12 11

7

19

10 13 9 8

6

5

4

3 20

1

14

1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Fan Motor Compressor Filter drier Sight glass Solenoid valve in liquid line Collector Dehumidifier valve Expansion valve Evaporator

11. 12. 13. 14. 15. 16. 17. 18. 19. 20.

20 Rotalock valves only at CCD/U 201 15

Shutoff valve Safety valve Condensor Low-pressure pressostat High-pressure pressostat Temp./humidity sensor (behind elec. compart.) Master switch Electrical compartment Vent valve Rotalock valve

E/0605/20/19

3.5 Application Ranges The STULZ MINI-SPACE units are provided for operation within the following ranges: - Room conditions: Between 18°C, 45% R.H. and 27°C, 55% R.H. - Outdoor ambient conditions: lower limit: -10°C upper limit: 35°C - Air flow: nominal values are listed in the tables on the pages 21-26. - Voltage: 400 +/- 10% - Frequency: 50 Hz +/- 1%

E/0605/20/20

- Hot water conditions for optional heating coil: max. inlet water temperature: 110°C max. water head pressure: 8.5 bar - Max. length of piping between A/C unit and air cooled condenser: 30m equivalent. - Max. level difference between condenser and A/C unit: 3m (when condenser is below the A/C unit). - Storage conditions: between -20°C and +35°C The warranty is invalidated for any possible damage or malfunction that may occur during or in consequence of operation outside the application ranges.

4. Technical Data CCD/U 41 CCD/U 41 A

CCD/U 41 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

4.9/4.6 4.4/4.4

4.9/4.6 4.4/4.4

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

2000 50/40 0.37

2000 50/40 0.37

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 1.5 1.0**

Scroll 1.5 2.4

°C °C m³/h kPa

Air KSV 006 32 2400 -

30%Glycol B 10x60 39 45 1.08 1.1

kPa

-

3-way 3/4'' 5.5

mm mm

EU4 Filter mat 640/570/20 972/395/20

EU4 Filter mat 640/570/20 972/395/20

kW

2 1

2 1

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Weight Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 180 600 / 1850 / 600

380-415/3/50/N 185 600 / 1850 / 600

Condenser Cooling medium Model Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser/CW coil and piping Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/21

Technical Data CCD/U 61 CCD/U 61 A

CCD/U 61 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

6.8/6.2 6.2/6.0

6.8/6.2 6.2/6.0

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

2000 50/40 0.37

2000 50/40 0.37

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 1.9 1.0**

Scroll 1.9 2.4

°C °C m³/h kPa

Air KSV 008 32 3500 -

30%Glycol B 10x60 39 45 1.4 1.8

kPa

-

3-way 3/4'' 9

mm mm

EU4 Filter mat 640/570/20 972/395/20

EU4 Filter mat 640/570/20 972/395/20

Condenser Cooling medium Model Output Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser/CW coil and piping Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

kW

2 1

2 1

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 185 600 / 1850 / 600

380-415/3/50/N 190 600 / 1850 / 600

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/22

Technical Data CCD/U 81 CCD/U 81 A

CCD/U 81 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

8.9/8.0 8.0/7.6

8.9/8.0 8.0/7.6

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

2000 50/40 0.37

2000 50/40 0.37

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 2.5 1.0**

Scroll 2.5 2.4

°C °C m³/h kPa

Air KSV 012 32 4300 -

30%Glycol B 10x60 39 45 1.78 2.9

kPa

-

3-way 3/4'' 15

mm mm

EU4 Filter mat 640/570/20 972/395/20

EU4 Filter mat 640/570/20 972/395/20

kW

2 1

2 1

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Weight Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 190 600 / 1850 / 600

380-415/3/50/N 195 600 / 1850 / 600

Condenser Cooling medium Model Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser/CW coil and piping Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/23

Technical Data CCD/U 121 CCD/U 121 A

CCD/U 121 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

12.4/11.0 11.5/11.0

12.4/11.0 11.5/11.0

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

3200 50/40 0.55

3200 50/40 0.55

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 2.9 1.0**

Scroll 2.9 2.4

°C °C m³/h kPa

Air KSV 016 32 6800 -

30%Glycol B 10x60 39 43 3.49 11

kPa

-

3-way 3/4'' 57

mm mm

EU3 Filter mat 640/570/20 972/395/20

EU3 Filter mat 640/570/20 972/395/20

kW

4 1

4 1

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Weight Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 200 600 / 1850 / 600

380-415/3/50/N 205 600 / 1850 / 600

Condenser Cooling medium Model Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser/CW coil and piping Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/24

Technical Data CCD/U 171 CCD/U 171 A

CCD/U 171 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

17.8/17.0 16.6/16.4

17.8/17.0 16.6/16.4

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

6000 70 2.2

6000 70 2.2

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 4.4 2.0**

Scroll 4.4 3.2

°C °C m³/h kPa

KSV 021 32 6500 -

30%Glycol B 25x50 39 45 3.57 21

kPa

-

3-way 3/4" 59

mm mm

EU4 Filter mat 870/970/20 975/650/20

EU4 Filter mat 870/970/20 975/650/20

kW

2x6 2

2x6 2

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Weight Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 220 1000 / 1850 / 810

380-415/3/50/N 225 1000 / 1850 / 810

Condenser Cooling medium Model Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser and piping

Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/25

Technical Data CCD/U 201 CCD/U 201 A

CCD/U 201 G

Evap. cool. capacity (total/sensible) With return air at 24°C/50% RH With return air at 22°C/50% RH

kW kW

22.6/20.9 20.7/20.1

22.6/20.9 20.7/20.1

Fan Volume flow External pressure D/U Motor nominal output

m³/h Pa kW

7000 70 2.2

7000 70 2.2

Compressor Model Motor nominal output Refrigerant charge R407c

kW l

Scroll 5.5 2.0**

Scroll 5.5 3.4

°C °C m³/h kPa

KSV 036 32 13600 -

30%Glycol B 25x50 39 45 4.34 31

kPa

-

3-way 3/4" 88

mm mm

EU4 Filter mat 870/970/20 975/650/20

EU4 Filter mat 870/970/20 975/650/20

kW

2x6 2

2x6 2

Steam humidifier (option) Capacity

kg/h

1,5-3,0

1,5-3,0

General unit data Electrical connection Weight Width/Height/Depth

V/-/Hz kg mm

380-415/3/50/N 230 1000 / 1850 / 810

380-415/3/50/N 235 1000 / 1850 / 810

Condenser Cooling medium Model Medium inlet temperature Medium outlet temperature Volume flow Pressure drop, condenser and piping

Control valve Size Pressure drop, valve Filter Quality Design Width/Height/Depth - D Width/Height/Depth - U Electrical reheat (option) Heating capacity No of stages

* The electrical power consumption of the fan is to be added to the room load. ** only with running test, otherwise with protective nitrogene filling

E/0605/20/26

4.1 Sound data

Sound level in dB (A)

Unit size

CCD

CCU

41 A/G

45

47

Upflow

2000

M

61 A/G

45

47

81 A/G

45

47

121 A/G

48

50

171 A/G

55

57

201 A/G

57

59

1000

Downflow 2000

M 1000

The data are valid at a height of 1m and distance of 2m in front of the unit under free field conditions and with nominal data. The values take into account the effects of all installation and design parts contained in the standard unit. The values are due to the noise, which is emitted through the suction opening and the unit casing. The noise which is emitted through the discharge opening is not taken into account. It is presupposed that the discharge noise is muffled by appropriate measures in the raised floor (downflow units) or in the discharge duct (upflow units). The data for the upflow units are intended for a mounted discharge duct. The sound levels stated can be further reduced by suitable attenuation measures determined by individual site conditions.

E/0605/20/27

4.2 Electrical connected loads 380-415V / 3Ph / 50Hz

Components max. current consumption [Amp]

CCD/U 41 A/G

L1

L2 L3

L1

L2 L3

L1

L2 L3

1~

—

3,3 —

—

3,3 —

—

3,3 —

—

5,5 —

3~

3,3 3,3 3,3

4,3 4,3 4,3

5,9 5,9 5,9

7,3 7,3 7,3

2~

3,2

— 4,8

3,2

— 4,8

3,2

— 4,8

8,0

— 8,0

1~

—

— 12,7

—

— 12,7

—

— 12,7

—

— 12,7

3,3 6,6 3,3

4,3 7,6 4,3

5,9 9,2 5,9

6,5 6,6 8,1

7,5 7,6 9,1

9,1 9,2 10,7 15,3 12,8 15,3

3,3 6,6 16,0

4,3 7,6 17,0

5,9 9,2 18,6

CCD/U 171 A/G

CCD/U 201 A/G

5,1 12,3

5,1 13,4

8,7 17,3 4,2

8,7 17,3 4,2

18,4 27,1 35,7 23,6

19,5 28,2 36,8 24,7

6 kW 2x6 kW

6 kW 2x6 kW

E/0605/20/28

CCD/U 121 A/G

L2 L3

max. current consumption [Amp]

Fan

CCD/U 81 A/G

L1

Components

Key:

CCD/U 61 A/G

Compressor

El. heater

7,3 12,8 7,3

7,3 12,8 20,0

Steam humidifier

4.3 Unit characteristics, air circuit Design example for the fan speed The units CCD/U 41-121 have a fan which is directly driven by a motor without a v-belt. The speed and thus the air flow can exclusively be modified by the speed controller (see page 46). By means of this example it is explained how the fan speed and power requirement at the shaft are determined from the fan curve for a CCD 201 A/G A/C unit. Given:

(A) Air volume 5000 m3/h (B) p external 75 Pa

Required:

(D) Pressure loss of the unit (E) Overall pressure loss (F) Fan speed (G) Power requirement at the shaft

PROCEDURE: Establish the intersection point (C) of the air volume (A) and the unit characteristics and determine the pressure loss of the unit: determined value (D) = 240 Pa Add the Pressure loss of the unit (D) and the external pressure (B): (D)+(B)= (E) determined value (E): 240 + 75 = 315 Pa The operating point (H) is at the intersection point of air volume (A) 5000 m3/h and the overall pressure loss (E) 315 Pa. Read off the fan speed (F): 800 rpm Read off the power requirement at the shaft (G): 0.62 kW

E/0605/20/29

Unit characteristics, air circuit for CCD/U 41-81 (unit characteristics = internal pressure drop in unit) SP [Pa]

RPM 1500 1450 1400

500

1350 1300 1250 1200 1150 1100

400

1050

300

200 mA 5000 4500 4000 100

3500 3000 2500 2000

0

1500 0 0

1000

2000 100

3000 Q[m³/h] 200

Factor for dynamic pressure: Downflow = 1.6, Upflow with duct connection = 1.0

E/0605/20/30

300

Pd[Pa]

Unit characteristics, air circuit for CCD/U 121 (unit characteristics = internal pressure drop in unit) RPM 1000

SP [Pa] 400

950

900

850

800 300 750 Input W 1200 1100 1000 900 200

800 700 600 500 400 mA 6000 5500

100

5000 4500 4000 3500 3000 2500 2000

0 0 0

1000

2000 100

3000 200

300

4000 400

500

600

Q[m³/h] 700

Pd[Pa]

Factor for dynamic pressure: Downflow = 1.6, Upflow with duct connection = 1.0

E/0605/20/31

Unit characteristics, air circuit for CCD 171/201 Fan size: AT 12 - 12 (unit characteristics = internal pressure drop in unit)

Characteristic curve :

E/0605/20/32

Air flow range: 3500 - 7500 m³/h

Unit characteristics, air circuit for CCU 171/201 Fan size: AT 12 - 12 (unit characteristics = internal pressure drop in unit)

Characteristic curve :

Air flow range: 3500 - 7500 m³/h

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4.4 Dimensions (in mm)

1850

CCD/U 41-121

220 600

600

1850

CCD/U 171/201

370 1000

E/0605/20/34

810

5. Installation and commissioning Delivery of units Stulz A/C units are mounted on pallets and packed several times in plastic film. They must always be transported upright on the palettes. The following information can be found on the packing. 1) Stulz logo 2) Stulz order number 3) Type of unit 4) Packing piece - contents 5) Warning symbols

Construction of protective covering (from inside to outside) 1. 2. 3.

Neopole cushioning Shrink film Additional board in container shipments

also upon request 6) Gross weight 7) Net weight 8) Dimensions 9) Customer order number 10) Additional customer requirements When delivery is accepted, the unit is to be checked against the delivery note for completeness and checked for external damage. The delivery note can be found on the A/ C unit when delivered.

Space required for unit installation

1500 mm

1300 mm

All assembly and maintenance work can be carried out from the front of the A/C unit once the units have been installed. Observe the clearance required for maintenance as shown below.

700 mm 1100 mm

CCD/U 41 - 121

CCD/U 171/201

E/0605/20/35

Pipelines and cable conduits All pipelines and electric cables are to be routed through the six openings in the right-hand side-panel of the unit types 41-121 or six openings in the left-hand side panel of the unit types 171/201. The pipes to be connected must be soldered on A-type units. On all other versions of the units the pipe connection is designed as a screwed pipe connection.

CCD/U 41 - 121 A

Unit

D3

41 A 61 A 81 A 121 A

285 285 285 290

pressure line liquid line

D3 condensate line

215 320 295

300 340

H

H CCD 280 CCU 170

50

View from behind

210

Pressure line

Liquid line CCD/U CCD/U 41-81 121

O 12

E/0605/20/36

16

CCD/U 41-121

O 10

CCD/U 171/201 A

pressure line

liquid line

D3

165 150

D2

75

condensate line

D1

Front view

Unit

H 50

171 A 201 A

H CCD 350 CCU 160

D1

D2

D3

550 285 270 575 65 525

View from behind

210

Liqid line CCD/U 171-201

70

CCD/U 171 201 O 16 22

2

O 16

120

Pressure line

x

55 70

50 4

x

32

70

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CCD/U 41 - 121 G Unit

E1

E2

E3

41 G 61 G 81 G 121 G

170 170 170 120

70 70 70 70

190 190 190 190

A1

A2

A3

130 130 130 140

70 70 70 65

125 125 125 120

41 G 61 G 81 G 121 G

Inlet Outlet

E3 A3 E2

A2

condensate line A1 E1

View from behind

H 50

H CCD 280 CCU 170

210 Inlet/Outlet

Unit CCD/U 41-81 CCD/U 121

E/0605/20/38

D 22 28

D

CCD/U 171/201 G

Inlet

240 120

Outlet 175

510 condensate line

255

600

View from behind

H 50

H CCD 350 CCU 160

210 Inlet/Outlet

x

50 4

x

32

28

120

70

2

55 70

70

E/0605/20/39

Installing the A/C unit Installation sequence Intake duct

4

Refer to manufacturer's documentation

Louvered flap

3

For assembly, refer to "Louvered flap" options

A/C unit

2

Described below

Raised floor stand

1

For assembly, refer to "Raised floor stand" options

Installing the A/C unit Check the A/C unit to ensure it is complete and not damaged. If the A/C unit is incomplete or damaged, please contact STULZ customer service. Transport the complete A/C unit to the installation point.

The A/C unit must only be transported upright.

Transport the complete A/C unit to the installation point or onto the existing raised floor stand (option). Ensure that all electric cables, condensate-water connections and water connections (on G-units only) are already routed to the A/C unit or to the individual modules and are ready for connection.

G-Units : If the water quality is insufficient, we recommend the additional installation of a strainer. Connect the cooling-water pipes as follows: Remove the protective caps from the flanges of the water pipes.

Water pipes are only fitted on the G units.

E/0605/20/40

Unit type

Thread

41-121 171/201

R 1" R 1 1/2"

Water remaining from the test run may escape when the protective caps are removed.

Insert the seals and screw on the flanges of the water pipes.

If any seals have got lost, these may only be replaced by glycol-resistant rubber seals. Flanged connection Insulate the water pipes with the insulating material supplied.

The insulation material required is included with the respective module as a supplementary pack.

Screw the water pipes of the A/C unit together with the local water pipes of the dry cooler or the water chiller. Insulation of water pipes Fill and bleed the cooling-water circuit. A filling connection and several schrader valves for bleeding are fitted to the A/C unit. Refer to refrigeration/ piping diagram.

All Units : Connect the condensate water drains to the local waste water system.

33 mm

Comply with the regulations of the local water supply authority.

E/0605/20/41

A-Units : Connect the pipelines carrying refrigerant to the external condensor (refer to section on "refrigerant piping"). The refrigerant-conducting pipelines are only to be connected by an authorised specialist. Comply with the safety instructions at the start of these operating instructions.

A refrigerant pipe to the external condensor is only required on A-units.

Connection diameter of the copper pipelines of the A/C unit (in mm): Unit types: Pressure line: Liquid line:

41 - 81 12 10

121 16 10

171 16 16

201 22 16

pressure line

liquid line

Fill the refrigerant circuit with refrigerant. (Refer to refrigerant piping section). For this, the solenoid valve in the liquid line must be energized (24 V AC). Position of refrigerant connections

Electrical connection Ensure that the electric cables are de-energized. The electric cables are only to be connected by an authorised specialist.

Route the electric cable into the electrics box from below and connect them to the master switch in accordance with the wiring diagram (Appendix). Electrical connection

E/0605/20/42

Electrical connection The A/C unit must be installed and connected in accordance with the chapter on "installation of A/C unit" before initial commissioning. Open the electrical compartment door of the A/C unit using the key provided. Check whether all power switches and control-circuit fuses in the electrical section of the A/C unit are switched off. Power switch OFF

Control-circuit fuses

Master switch

Power switch

Switch on the A/C unit at the master switch. Electrical compartment Caution. Electric cables and electrical components of the A/C unit are live.

non calibrated range

Switch on the control-circuit fuses and the power switches of the fan and the compressor in sequence as well as the built-in options in accordance with the wiring diagram. The wiring diagram can be found in the "Appendix". Do not turn the adjustment screw beyond the end of the calibrated scale range, as it may result in overheating and short-circuit at the consumer.

Power switch ON

E/0605/20/43

If your A/C unit is equipped with additional options, further measures on initial commissioning are to be found in the "Options" section.

CompTrol 1002

Switch on the A/C unit at the controller.

Controller C1002 Let the A/C unit operate for approx. 1 hour while paying attention to any unusual noises. Check the level of refrigerant in the sight glass on A-type A/C units. If bubbles are continuously visible in the sight glass, top up the refrigerant circuit with refrigerant in accordance with the chapter "refrigerant piping". G-units are equipped with a sealed refrigerant circuit in the A/C unit which has been checked and approved by the factory. Set the required specified values for room temperature and air humidity on the controller of the A/C unit. Refer to Controller Manual.

Sight glass

5.1 Dismantling and disposal The A/C unit can only be dismantled by qualified specialists. Switch off the A/C unit at the controller and at the master switch. Disconnect the A/C unit from the de-energized network. Dispose of the refrigerant in the A/C unit in accordance with the disposal and safety regulations applicable on site (refer to chapter on refrigerant piping). If fitted, disconnect the depressurized refrigerant lines, the depressurized cooling water pipes and the condensate water drainage pipes from the A/C unit. Dispose of the A/C unit in accordance with the disposal and safety regulations applicable on site. We recommend a recycling company for this. The A/C unit basically contains the raw materials aluminium (evaporator), copper (pipelines, wiring), and iron (panelling, mounting panel).

E/0605/20/44

6. Operation and maintenance Switching the A/C unit on and off The A/C unit is only to be switched on when it has been installed in accordance with the "assembly and commissioning" section, connected correctly and commissioned for the first time.

The A/C unit is switched on and off by pressing the on/off button on the controller. The complete functional sequence of the A/C unit is controlled and monitored by the controller. The actual values of room temperature/humidity are shown on the display when the A/C unit is switched on. CompTrol 1002

The fan runs on for approx. 3 minutes when the A/C unit is switched off.

Controller C1002

Switching off the complete A/C unit The complete A/C unit is switched off via the controller and via the built-in master switch. To do this, open the electrical compartment and put the master switch in position "0".

Operating the A/C unit The A/C unit is operated via the controller. A complete description of the functions of the controller can be found in the enclosed manual. All alarm and fault signals of the basic A/C unit are also described.

E/0605/20/45

For the operation of the unit variants CCD/U 41 - 121 there is an additional device:

The Fan Speed Control With the fan speed control you can adapt the fan speed individually to the application domain of the A/C unit. The speed control is installed in the middle part of the electric box on the terminal strip. You can adjust the fan speed with two variable resistors which are situated on the printed circuit board of the speed control. With the variable resistor indicated PHI 1 you adjust the speed for the operation without dehumidification (Nondehumidifying speed, N-D speed). With the variable resistor indicated PHI 2 you adjust the speed for the dehumidification. The speed, adjusted with PHI 2, should be smaller than the N-D speed to make sure that a dehumidification takes place. Both resistors have got the same range of control from a minimum speed to the nominal speed.

Consequences, if the speed is too small: - Icing of the evaporator - The air flow control can give an alarm. - Overheating of the electric reheat, the overheat protection is actuated. Two LEDs on the printed circuit board indicate the state of operation. At a non-dehumidification phase the LED I1 is illuminated and the fan motor runs at the adjusted speed by PHI 1. At a dehumidification phase the LED I2 is illuminated and the fan motor runs at the adjusted speed by PHI 2.

adjustable resistors

LED

Fuse 6A

E/0605/20/46

Maintenance Safety instructions All maintenance work is to be carried out under strict compliance with the country-specific accident prevention regulations. In particular we refer to the accident prevention regulations for electrical installations, refrigerating machines and equipment. Maintenance work is only to be carried out on the A/C units by authorised and qualified specialist staff. Work on the system must always only be carried out when it is shut down. To do this, the A/C unit must be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign must be displayed. Live electrical components are to be switched to de-energized and checked to ensure that they are in the de-energized state. Non-compliance with the safety instructions can endanger people and the environment. Contaminated parts always result in a loss of performance and, in the case of switching and control units, can result in the failure of the system.

The built-in filters cannot be washed and the dust cannot be beaten out of them. Therefore contaminated filters must be replaced regularly, otherwise air output is reduced, energy consumption increases considerably and the system may fail.

Maintenance measures and intervals Measure

Intervals in months

General Checking A/C unit for external damage Cleaning inside of A/C unit and checking for damage

12 12

Mechanical Checking fan for satisfactory condition Replacing filter Replacing V-belt

12 3 6

Air conditioning Checking refrigerant circuit Visually inspecting water circuit for leaks Checking compressor for satisfactory condition

3 3 3

This table contains all the maintenance measures required for a basic A/C unit. If your A/C unit is equipped with additional options, the required maintenance measures can be found in the "options" section. The intervals specified in the table are only reference values, which can vary depending on where the unit is installed and the degree of contamination.

E/0605/20/47

Maintenance work Opening the A/C unit The A/C unit is opened by opening the electrical compartment door and by removing two front panels The panel in front of the low temperature section is secured by ball pins and can be removed without auxiliary equipment. To remove the front panel in front of the air section, first open the electrical compartment door using the male triangular wrench provided.

All maintenance measures can be performed from the open front of the A/C unit.

Checking A/C unit for external damage - Ensure that the A/C unit is switched on and is in operation. - Pay attention to unusual noises. - Check the A/C unit externally for damage, contamination and corrosion. - Check whether warning information is shown on the display.

E/0605/20/48

Cleaning inside of A/C unit and checking for damage - Switch the A/C unit off at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Wait until the fan stands still. - Open the electrical compartment door of the A/C unit using the male triangular wrench. - Switch off the A/C unit at the master switch. - Remove the front panels.

Master switch

- Clean the A/C unit with a vacuum cleaner. - Check the filter for contamination and replace it, if necessary. - Clean the condensate water tray. - Clean the fins of the evaporator with a brush. - Clean the unit components with a cloth. - Check all built-in unit components for external damage, contamination and corrosion. - Check the hose connections for damage.

Condensate water tray Evaporator

- Check the pipeline system for damage. - Check the cable connections for firm seating and damage. - Re-install the front panels. - Switch on the master switch and close the electrical compartment door. - Remove the warning sign and put the A/C unit into operation.

E/0605/20/49

Checking fan for satisfactory condition - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Wait until the fan stands still. - Open the electrical compartment of the A/C unit using the STULZ door opener. - Switch off the A/C unit at the master switch. - Switch off the power switch of the fan.

Master switch

- Remove the front panel in front of the air section. - Check fan for damage, corrosion and firm seating. - Turn the fan by hand, checking ease of movement and noting any running noises from the bearings. - Check the V-belt for wear and replace it, if necessary. (only for CCD/U 171/201) - Check whether the pulleys of the V-belt align. - Check the tension of the V-belt.

Aligning the V-belt pulleys

The V-belt may yield by a maximum of one V-belt thickness. The V-belt tension is adjusted by turning the hexagon shaft on the motor slide. - Install the front panel in front of the air section. - Switch on the power switch of the fan. - Switch on the master switch and close the electrical compartment. - Remove the warning sign and put the A/C unit into operation.

E/0605/20/50

Tension of the V-belt

Replacing filters - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Wait until the fan stands still. - Open the electrical compartment. - Switch off the A/C unit at the master switch. - Remove the filters. On a downflow unit the filter is accessible from above. On an upflow unit, remove the air section panel in which the filter is housed.

Master switch

- Remove contamination from the filter seat. - Install new filters. - Re-install the air section panel, if appropriate. - Switch the master switch on and close the electrical compartment. - Remove the warning sign and put the A/C unit into operation. Downflow unit filter

Upflow unit filter

E/0605/20/51

Replacing V-belt (only for CCD/U 171/201) This measure is only to be performed by an authorised, trained specialist. We recommend STULZ customer service. - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Wait until the fan stands still. - Open the electrical compartment of the A/C unit. Master switch - Switch off the A/C unit at the master switch. - Remove the air section panel. - Check the fan by hand for ease of operation. - Loosen the V-belt by turning the shaft on the motor slide. - Replace the V-belt. - Tension the V-belt by turning the shaft on the motor slide. - Check the tension of the V-belt.

Loosening/tensioning V-belt

The V-belt may yield by a maximum of one V-belt thickness.

- Check whether the pulleys align. Remove all tools and repair equipment in the A/C unit.

- Switch on the A/C unit at the master switch. Caution: Do not reach into the fan when the fan wheel is running. ! Caution: rotating parts. Do not reach into the V-belt when it is in operation.

E/0605/20/52

Aligning the pulleys

Caution: Current-conducting cables and electrical components of the A/C unit are live - Switch on the A/C unit at the controller. - Check the fan for satisfactory function. Pay particular attention to running noises from the fan and bearings. - Switch off the A/C unit at the controller. - Re-install the air section panel. - Close the electrical compartment of the A/C unit. - Remove the warning sign and put the A/C unit into operation.

E/0605/20/53

Checking refrigerant circuit - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Open the electrical compartment and switch off the A/C unit at the master switch. - Remove both front panels. - Visually inspect the pipelines of the refrigerant circuit for damage. - Check whether the safety valve has triggered.

Sight glass

Caution: current-conducting cables and electrical components of the A/C unit are live. - Switch on the A/C unit at the master switch and at the controller. - Check the refrigerant quantity at the sight glass during operation.

If bubbles are visible in the sight glass over a long period, there is insufficient refrigerant in the refrigerant circuit.

Master switch

- Check the pipe connections and connections of the refrigerant circuit for leaks with leak-detecting spray. - Switch off the A/C unit at the controller and master switch.

In the case of G-units, the quantity of refrigerant specified for the unit can be found on the rating plate. If there is insufficient refrigerant, the refrigerant is to be extracted and refilled completely.

Location of rating plate

E/0605/20/54

Refrigerant containing fluorinated hydrocarbons damages the ozone layer and is therefore to be disposed of properly! - Top up with refrigerant, if there is no leakage and insufficient refrigerant (refer to the section on "refrigerant piping"). - Re-install the front panels. - Switch on the master switch and close the electrical compartment door. - Remove the warning sign and put the A/C unit into operation.

Visually inspecting water circuit for leaks - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Open the electrical compartment and switch off the A/C unit at the master switch. - Remove the low temperature section panel. - Visually inspect the pipelines of the water circuit for leaks. - Visually inspect the screwed pipe connections for leaks and for damage.

Master switch

- Re-install the low temperature section panel. - Switch on the master switch and close the electrical compartment. - Remove the warning sign and put the A/C unit into operation.

Screwed pipe connections

E/0605/20/55

Checking compressor for satisfactory condition - Switch off the A/C unit at the controller. - Attach a "DO NOT SWITCH ON" warning sign to the A/C unit. - Open the electrical compartment and switch off the A/C unit at the master switch. - Remove the low temperature section panel. - Switch off the compressor power switch. - Check the compressor for external damage and corrosion.

Master switch

- Re-install the low temperature section panel. - Switch on the power switch of the compressor. - Switch on the A/C unit at the master switch. - Close the electrical compartment. - Remove the warning sign and put the A/C unit into operation

Compressor

E/0605/20/56

7. Causes and elimination of faults All faults which are detected by the A/C-unit are visualized on the display of the controller. On the following pages the most current faults are documented.

Outputs 1x Fan 1x Humidification (dry contacts) 2x Heating 1x Compressor/Valve 1x Alarm (dry contacts)

Inputs Alarm inputs: Humidification Airflow Filter Heating Conductivity Aux1/water detector

Sensors temperature and humidity

Remote ON/OFF

Display 4-digit LED 4x Status 4x Alarm

CompTrol 1002

Operation 4 keys 4 switch (rear side) ALARM HEIZUNG 1 Befeuchter Fern Ein Monitor On

RS485

24 V

220 V TRANSFORMER

Program entry: Set values, start values, limit values, hysteresis

E/0605/20/57

Limit value alarms shown on display Room temperature too high

Cause of fault 1 Sensor measures defective specified or limit values. Limit or specified values have been exceeded.

Room temperature too low

Elimination

Comments

Calibrate sensor.

To calibrate, check values in the controller with external thermometer.

Check in the controller the specified and limit values entered.

Room temperature too high: 2 Filter contaminated.

Replace filter. Refer to "Operation/ Maintenance" section.

3 Expansion valve frozen up.

Switch off A/C unit and switch on again after expansion valve has thawed.

4 Compressor or fan have failed.

Check compressor or fan for satisfactory condition. Refer to section "Operation/Maintenance". Inform customer service if compressor/fan is defective.

Shortage of refrigerant in refrigerant circuit.

Before opening the A/C unit, this is to be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign is to be attached. Comply with the safety instructions at the start of these operating instruc-tions.

Check refrigerant circuit. Refer to "Operation/Maintenance" section.

Room temperature too low: Compressor does not switch off.

Inform customer service.

Heating defective.

Inform customer service.

E/0605/20/58

After the elimination of the fault press the key code twice.

Room humidity too high

Room humidity too low

Cause of fault

Elimination

Comments

1 Sensor measures defective specified or limit values.

Calibrate sensor.

To calibrate, check values in the controller with the external hygrometer.

Limit or specified values exceeded.

Check in the controller the specified and limit values entered.

Room humidity too high: 2 CCD/U 171/201 A/G : Solenoid valve for dehumidifying economy circuit defective. CCD/U 41 - 121 : Fan speed on the board is adjusted too high. Fan speed control is defective.

Replace defective solenoid valve. This measure is only to be carried out by an authorised specialist or by STULZ customer service. Turn down the fan speed with PHI 2 on the circuit board in the electric cabinet. Replace the fan speed control.

Before opening the A/C unit, this is to be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign is to be displayed. Comply with the safety instructions at the start of these operating instructions.

Room humidity too low: Steam humidifier defective.

Check function of steam humidifier.

After the elimination of the fault press the key code twice.

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Air flow failure

Cause of fault 1 Air flow monitor defective.

2 Hoses to flow monitor contaminated or kinked.

3 Fan defective.

Elimination

Comments

Check air flow monitor electrically. Defective air flow monitors are only to be replaced by authorised specialist staff or by STULZ customer service.

Work on the electrical systems is only to be carried out by qualified specialist staff.

Clean hoses and check for kink points.

Check fan for satisfactory condition. Refer to "Operation/ Maintenance" section.

4 CCD/U 171/200/201: V-belt worn.

Replace V-belt. Refer to "Operation/maintenance" section.

CCD/U 41-121 : The fan speed is adjusted too small.

Turn up the fan speed. (page 46)

Before opening the A/C unit, this is to be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign is to be displayed. Comply with the safety instructions at the start of these operating instructions.

After the elimination of the fault press the key code twice.

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Filter alarm

Cause of fault

Elimination

Comments

1 Filter contaminated

Replace filter.

Before opening the A/C unit, this is to be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign is to be displayed. Comply with the safety instructions at the start of these operating instructions.

2 Filter monitor does not operate.

Replace defective filter monitor.

Replace defective parts, DO NOT REPAIR THEM.

Check hoses for contamination and kink points.

After the elimination of the fault press the and key on the C1002.

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Low pressure alarm

Cause of fault

Elimination

Comments

1 Pressure switch defective.

Adjust or replace pressure switch.

2 Expansion valve defective.

Replace expansion valve. DO NOT REPAIR IT.

3 Solenoid valve in fluid line defective.

Replace coil or lower section of valve.

Repairs on components of the refrigerant circuit and electrical components are only to be carried out by authorised specialist staff or by STULZ customer service.

Voltage supply of solenoid valve defective.

Check electrical actuation with a voltage tester.

4 Power switch of compressor does not operate.

Check start temperature of the compressor at the controller.

Power switch of compressor has triggered.

Check adjustment value of motor protection switch. Measure compressor power consumption.

Shortage of refrigerant in system.

Locate and eliminate leaks in refrigerant system. Replenish refrigerant on A units. Replace refrigerant on G units.

Before opening the A/C unit, this is to be switched off at the controller and at the master switch. A "DO NOT SWITCH ON" warning sign is to be displayed. Comply with the safety instructions at the start of these operating instructions.

After the elimination of the fault press the key code twice.

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High pressure alarm

Symptom

Action

Comments

1 Compressor contactor tripped.

Check adjustment of contactor. Measure power consumption of compressor. Replace defective compressor.

Compressor contactor does not operate.

Check contactor for satisfactory function.

Repairs on components of the refrigerant circuit and electrical compon-ents are only to be carried out by authorised trained staff or by STULZ customer service.

2 High pressure switch has tripped.

After elimination of the failure press the blue button on the high pressure switch.

Overfilling of the refrigerant circuit.

Reduce quantity of refrigerant. Surplus refrigerant has to be disposed of in accordance with the regulations.

3 Overheating of compressor due to shortage of water in condenser water circuit.

Replenish cooling medium. Eliminate any leakages. Bleed water circuit. Check condenser water pumps or drycoolers for satisfactory function.

Overheating of compressor due to insufficient heat transmission to the air cooled condenser.

Clean the fins of the air cooled condenser.

Before opening the A/C unit, this is to be switched off at the master switch. Comply with the notes on safety at the start of these operating instructions.

After the elimination of the fault press the key code twice.

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Controller fault, Sensor failure

Symptom

Action

Comments

The controller has detected a check sum error concerning the EPROM.

Replace the controller.

Repairs on electrical components are only to be carried out by authorised trained staff or by STULZ customer service.

Sensor failure temperature: The measured temperature is below 3°C or above 50°C.

Check the actual temperature with an external thermometer. Check the sensor, cable and the electrical connection, if the temperature is in between the measuring range.

Sensor failure humidity: The measured humidity is below 3% r.h. or above 97% r.h.

Check the actual humidity with an external hygrostat. Check the sensor, cable and the electrical connection, if the humidity is in between the measuring range.

E/0605/20/64

Before opening the A/C unit, this is to be switched off at the master switch. Comply with the notes on safety at the beginning of this manual.

After the elimination of the fault press the key code twice.

8. Refrigerant piping Notes on refrigerant system installation and filling an air conditioning system All work on refrigeration systems must only be carried out by authorised specialist staff or by STULZ customer service

Selection of hot gas and liquid line -

-

Establish the shortest pipe route from the A/C unit to the condenser. Exceptions only if unnecessary bends have to be avoided. Determine the required pipe fittings and fittings between the A/C unit and condenser. With the aid of table No. 1 on P.67, convert the pressure loss of the individual fittings into equivalent pipe lengths. Look up equivalent pipe lengths for pipe fittings and fittings and add these to the real pipe lengths. Select the pipe dimensions from diagram No. 1 on P.66 appropriate to the calculated overall pipe length and cooling capacity.

Precautions for hot gas line if the condenser is higher than the A/C unit. -

Ascending pipes are routed with the same dimensions, if oil transportation in accordance with table No. 2, P.67 is guaranteed even at part load. An oil separator must be installed in systems with a pipe length above 25 m. Oil elbows (even in the case of the oil separator) are to be installed every 2.5-3.0 m. The horizontal lines are always to be routed with a slope towards the condenser.

Precautions for fluid lines: With fluids, bubbles can form upstream of the expansion valve. This is always the case when the temperature of the refrigerant upstream of the expansion valve corresponding to the pressure is lower than the ambient temperature of the fluid line. Therefore insulation with Armaflex or equivalent material with a wall thickness of 9 mm is recommended for the lines outside of the unit. A thicker insulation is not required since the insulating effect does not significantly increase with wall thickness. Precautions for hot gas lines: Hot gas lines can reach a temperature of up to +80°C and should be insulated inside the building at places where a possibility of contact exists (risk of burn!).

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Pipe dimensions and precautions for the routing of refrigerantconducting lines Diagram No. 1 - Diagrams for showing the layout of refrigerant lines for R407c/R22

Ou tsi de dia . in m

Overall pipe length in m

Liquid lines depending on the overall pipe lengths and cooling capacities.

Hot gas lines depending on the overall pipe lengths and cooling capacities.

Ou tsi de dia . in mm

Overall pipe length in m

Cooling capacity in kW

Cooling capacity in kW

E/0605/20/66

Table 1: Pressure drop of pipe fittings in meters of equivalent pipe length

Bend

Copper pipe

Angle

Outside dia. mm

45°

90°

180°

90°

10 12 15 18 22 28 35 42

0,16 0,21 0,24 0,26 0,27 0,39 0,51 0,64

0,20 0,27 0,30 0,36 0,42 0,51 0,70 0,80

0,53 0,70 0,76 0,87 0,98 1,20 1,70 1,90

0,32 0,42 0,48 0,54 0,61 0,79 1,00 1,20

T-piece

0,20 0,27 0,30 0,36 0,42 0,51 0,70 0,80

Table 2: Selecting the pipelines Minimum cooling capacities which are required for oil transportation in rising pipes of hot gas lines for R407c/R22 at tc (dew point) 48°C.

Pipe diameter Cooling capacity

kW

15

18

22

28

35

42

4,41

5,17

7,14

10,0

16,58

25,9

Route horizontal pipes with a slope towards the condenser. Position oil bends every 2.5 - 3 m. Use oil separator for rising pipe longer than 25 m.

E/0605/20/67

Installation instructions for routing refrigerant-conducting pipes The following points are to be complied with when routing the pipes: -

The measures listed in the safety instructions chapter are to be complied with when routing refrigerantconducting pipelines.

-

Routing must be over the shortest routes, (involve a specialist in cases of doubt).

-

Bends and angles are to be avoided wherever possible as these result in pressure drops which reduce the output of the A/C unit. Returns around joists, masonry offsets or the like are to be carried out with 45° bends wherever possible, in accordance with sketch No. 2, P. 71.

-

Horizontal lines must have a slope towards the condenser so that oil and condensed refrigerant cannot flow into the system when it is shut down. (Hot lines must be insulated. Exceptions are hot gas lines in the open air which cannot be touched.)

-

Upright pressure lines must have an oil bag every 2.5-3 m as well as an oil trap at the highest point, in accordance with sketch No. 3, P. 71.

-

To avoid backflow of condensation, a non-return valve with damping piston must always be installed, in the pressure line if it is not already installed in the unit on the outlet of the A/C unit or downstream of the oil separator.

-

If an oil separator is installed in the system, this must be filled with the same type of oil as the compressor in accordance with the manufacturer's specifications.

Never route pipelines through rooms such as conference rooms, rest rooms, offices etc. Pipe mountings are to be provided at least every 2 m. The pipe mountings are to be insulated against vibrations. The first pipe mounting behind the A/C unit and upstream of the condenser should be flexible. So that the pressure lines can expand, the pipe mountings are to be attached at least 1 m from the bend, in accordance with sketch No. 1, P. 71. -

All copper pipes which lead through masonry are always to be insulated in this area so that the pipes are not attacked by the masonry and a certain flexibility is retained.

-

For routing, only copper pipes are to be used which correspond to country-specific regulations. Sealing caps or ends added as flux must be meticulously clean and dry and meet the requirements of refrigeration engineering.

-

Before commencing with routing the pipelines, one should ensure that the pipes are dry and clean inside. Check whether the sealing caps are seated on the pipe ends and if necessary blow through the pipes with nitrogen. If the sealing caps are no longer seated on the pipe ends, the pipes must be cleaned inside with a clean non-fraying rag and a spiral and then blown through with nitrogen to remove the remaining dirt. Furthermore it must be ensured that the remaining pipe is always sealed with a plug after cutting off pipe ends.

E/0605/20/68

-

Pipes for refrigerant must always be cut to length with a pipe cutter and then brought to the correct inside diameter by slightly expanding or calibrating. Sawing refrigerant pipes is not permitted as the chips cannot be completely removed and blockages can result in the control components or the compressor may be irreparably damaged. The same can also occur as a result of contaminated pipes.

-

If copper pipes are flared, the taper of the tube flaring tool must be coated lightly with refrigerator oil to prevent a burr occurring during the flaring process on the copper pipe which can then enter the pipe.

-

Refrigerant-conducting pipes may only be soldered under inert gas so that no burring occurs on the inside of the pipes which also contaminates pipelines.

Soldering not carried out by a specialist will render the guarantee invalid. Nitrogen is used as the inert gas. It is blown through the pipe system under slight pressure without excess pressure affecting the soldered joint. Adequate ventilation of the room is to be ensured for welding and soldering work.

Before the final connection is soldered, a screwed connection must be released at the appropriate point so that no pressure occurs in the pipe system. After soldering, do not forget to retighten the screwed connection which has been released. -

If the system has finished pipework, it is mandatory that the system is checked for leaks. This must be carried out as follows: -

The system is initially filled with dry nitrogen to the maximum nominal pressure.

-

The system is shut off, the valve in the system is closed and the nitrogen bottle removed.

-

Each connection (including screwed connections) is checked for leaks by brushing off. In parallel with this check, a pressure gauge is connected, with which it can be rechecked that the system has no leaks, the pressure on the pressure gauge being checked for an appropriate period for the size of the system.

E/0605/20/69

Installation notes for routing refrigerant-conducting pipes

1000

1000

Correct Mounting the refrigerant pipes in corners Sketch 1 Incorrect Dealing with obstacles Sketch 2

liquid

gas

Routing pressure lines when the Condenser is higher than the compressor. ca. 2.5 - 3 m

Use oil separator for rising pipe longer than 25m. Sketch 3

liquid

max. 3 m gas

For height differences of over 3 m the system must be designed so as to guarantee additional subcooling (consult STULZ). Sketch 4

E/0605/20/70

Basic principles for evacuating refrigerant systems Vacuum pump The vacuum pump is used in order to remove as much air as possible in sealed systems, so that the moisture contained within evaporates and is extracted by the vacuum pump. (With a suitable vacuum, evaporation already takes place at ambient temperature). When selecting a vacuum pump this must be adapted to the systems to be evacuated (consult a specialist company). Successful evacuation and the associated drying of the system can only be achieved if the vacuum pump with the associated vacuum meter is in proper working order. In addition the evacuation process must be monitored continuously by a fitter.

Pressure measurements The pressure which prevails in the refrigerant circuit, is measured by pressure gauges. Two pressure gauges are required, one on the suction side for measuring the evaporator pressure and the associated evaporation temperature, the other for the high pressure side for measuring the condensation pressure and the associated condensation temperature. There are two types of pressure display: - measurement of absolute pressure (gauge pressure + atmospheric pressure) - measurement of gauge pressure (the pressure gauges only display the gauge pressure).

Condition of equipment for evacuating For satisfactory evacuation it is essential to use a satisfactory and clean vacuum pump. The connections of the vacuum pump must always be sealed when it is not being used, because moisture, dirt particles or similar which enter can result in damage to the vacuum pump so that satisfactory evacuation can no longer be achieved.

E/0605/20/71

Evacuating instructions Proceed as follows when it is ensured that the system is sealed -

Let out the test pressure down to 1 bara = 0 barp on the pressure gauge.

-

Connect the vacuum pump to the high and low pressure side of the system via a pressure gauge station.

-

Extract from the high and low pressure side down to approx. 0 bar.

-

Fill the system with nitrogen (not refrigerant because of environmental pollution) to 1 bar and extract again down to approx. 0 bar.

This process must be carried out at least 3 times, filling with nitrogen twice. Air and moisture is extracted from the cooling system due to evacuation If contaminants and larger quantities of water remain in the system - this may happen if the system has been open over a long period, or if the pipes to be processed were not sealed - proceed as follows: - Evacuate the system several times until the pressure gauge stays on 0 bar permanently. - In addition the system is to be run dry by replacing the drier several times during operation. For R407c and R134a: Refer to the special requirements of the refrigerant manufacturer.

Explanatory notes Absolute pressure [bara] : atmospheric pressure + gauge pressure Atmospheric pressure: Pressure which is caused by the weight of the atmosphere (approx. 1 bar) Gauge pressure [barü] : Pressure which prevails in the cooling system. Vacuum : Condition of approx. 0.02 - 0 bara, in a sealed system. The difference to ambient pressure is approx. -0.98 - 1 bar.

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Instructions on filling systems with Halogen refrigerants -

Systems without refrigerant collector or sight glass must always be filled according to weight.

-

Systems with refrigerant collector should be filled according to weight but can also be filled by checking the sight glass.

Comply with the safety instructions listed in this section and the country-specific regulations and safety instructions. -

Before the system is filled with refrigerant, it must be clean and dry inside. (Refer to evacuation instructions). Then proceed as follows: The standing refrigerant bottle is connected to the suction side via a pressure gauge station. For this the bottle stands upright or is suspended on scales. The weight is noted shortly before filling. The specified amount of refrigerant is now introduced when the system is operating. During filling the pressure in the refrigerant bottle will adjust to that of the system. Filling is then no longer possible. This can be seen by the icing up of the bottle or by checking the pressure gauge. The bottle valve must then be closed until a pressure increase has taken place which is above the suction pressure of the system. This process can be accelerated if the bottle is wrapped in hot moist towels or it is placed in a water bath at a maximum temperature of 50°C.

Never heat up the refrigerant bottle with a naked flame as there is a risk of explosion.

The refrigerant bottle must not be stood on its head otherwise any contamination from the bottle enters the system. When the filling process is complete, the system must be sealed carefully so that no refrigerant can escape. Only then may the bottle with filling station be removed. Systems with refrigerant collector can be filled observing the sight glass. The system is correctly filled when no more bubbles can be seen in the sight glass. Nevertheless scales should also be used here to determine the amount of refrigerant required.

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9. Options 9.1 Steam humidifier The steam humidifier is an optional extra for your A/C unit. It is installed complete and integrated within the function and method of operation of the A/C unit. Details concerning the connection assignment for the power supply can be found in the electrical diagrams in the appendix. We recommend the installation of an Aqua-stop valve in the water supply of the humidifier. In addition to this, the room, in which the A/C unit with the humidifier is installed, should be equipped with a water detection system.

9.1.1 Description The humidifier uses normal mains water for the production of steam. The conductivity of the water should be within the range of min. 300 to max. 1250 µS/cm. The water is converted directly into steam by means of electrical energy in a steam cylinder with electrode heating. The steam is introduced into the airflow via the steam throttle. Due to the evaporation the water level in the cylinder falls. The current consumption is reduced, as the electrodes are then immersed less in the water. With a sinking water level the mineral concentration in the cylinder increases, as the minerals do not evaporate. The current is kept by the control between two limit values (IN+10%, IN-5%). When the lower limit value is reached, the inlet valve opens. Now fresh water is mixed with residual water, which has a high mineral concentration. After several evaporation and filling cycles, the mineral concentration has increased in such a way, that the current reduction due to evaporation and falling water level takes place quite rapidly. When a certain limit value of current reduction is exceeded, the drain valve is opened at the moment, when also the lower current limit value is reached, and finally the cylinder is completely drained. The filling phase is automatically interrupted if the sensor electrode is contacted due to the high water level in the steam cylinder. This may happen in the start-up phase with a new steam cylinder.

9.1.2 Technical data The humidification capacity can be adjusted at a maximum value. The maximum humidification capacities are shown in the table with the corresponding A/C units.

Steam humidifier

Units:

Hum.capacity [kg/h]

Nom. current [A]

Nom. power [kW]

230V / 1 Ph / 50 Hz

CCD/U 41-121

1,5

6,4

1,13

3

12,7

2,25

400V / 3 Ph / 50 Hz

CCD/U 171/201

E/0605/20/74

3

4,2

2,25

Water requirements Water properties and ingredients

min

max

7

8,5

300

1250

hydrogen ions

pH

specific conductivity (at 20°C)

s20

µS/cm

total dissolved solids

TDS

mg/l

*

*

dry residue at 180°C

R180

mg/l

*

*

100²

400

total hardness

mg/l CaCO3

iron + manganese

mg/l Fe + Mn

0

0,2

chlorides

ppm Cl

0

30

silica

mg/l SiO2

0

20

residual chlorine

mg/l Cl-

0

0,2

Calcium sulphate

mg/l CaSo4

0

100

* values depending on specific conductivity; in general: TDS = 0,93 • s20 ; R180 = 0,65 • s20 2 not lower than 200% of chlorides content in mg/l of Clno metallic impurities, no solvents, diluents, soaps, lubricants

9.1.3 Supply connections The steam humidifier is installed and electrically connected in the A/C unit. The local regulations of the water supply company are to be complied with when making the hydraulic connection.

Water supply The water connection is made from the cold water mains and is to be equipped with a shut-off valve. The humidifier can be connected directly to the mains when the water pressure is between 1 and 10 bar. The pipe should have a diameter of at least 6 mm. If the line pressure is more than 8 bar, the connection must be made via a pressure reducing valve (set to 4-6 bar). In each case it is to be ensured that the manufactured water pipe upstream of the connection to the humidifier is flushed properly. We recommend only using copper pipes. The water supply temperature must not exceed 40°C. Do not treat the water with softeners ! This could result in corrosion of the electrodes and in the formation of foam with considerable operational interruptions. Prevent: 1. the use of well water, process water or water of cooling circuits and generally chemically or bacteriologically polluted water; 2. the addition of disinfectants or anti-corrosion liquids, as these are very irritating for the respiratory ducts.

E/0605/20/75

Water drain The drain is achieved by a plastic hose and is routed out of the unit by means of the openings in the unit provided for this purpose (refer to 5. Installation - supply connections). When creating the drain, attention is to be paid to provision for cleaning. As the water drain is depressurized, we recommend routing the drain hose directly into an open collector funnel to ensure free discharge. The drainage pipe should be routed to the sewerage system with sufficient gradient (at least 5%) and should be located approx. 30 cm below the humidifier. Attention is to be paid to temperature resistance when plastic pipes are used. If copper pipe is used, it must be earthed. For the drainage pipe an inside diameter of 32 mm is recommended, however the minimum inside diameter should not be less than 25 mm.

9.1.4 Commissioning As soon as the controller requires the humidifier function, the heating current is switched on; after approx. 30 seconds water is fed into the steam cylinder through the inlet valve which opens and fully automatic operation begins. A condition is the open shut-off valve in the water supply. IMPORTANT NOTICE: After the water pipes have been connected, the supply piping must be flushed for approx. 30 minutes, where the water is directly conducted into the drain, without letting it flow into the steam humidifier. This way residues or substances of the installation process are removed, which otherwise could block the fill valve and cause foam during the boiling process.

Decommissioning the humidifier The steam cylinder is to be emptied if the humidifier has been out of operation for a longer period (e.g. in summer, decommissioning the air conditioning system etc.) (see 9.1.6 Maintenance - Drainage).

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9.1.5 Operation The steam humidifier is controlled and monitored by the controller. No further operating measures are required for continuous operation. However, you can always vary the humidifier output, by operating the DIP-switches A3/4, which are located on the humidifier printed circuit board in the electrical section of the A/C unit. 3

4

ON

100 % humidification capacity

OFF

3

4

ON

75 % humidification capacity

OFF

3

4

ON

50 % humidification capacity

OFF

3

4

ON

The humidifier operation is indicated by a green LED. From the yellow LED you can see the state of operation of the humidifier (see diagram 1,2). The red LED indicates if an alarm is active (see alarm table). You can also manually drain the steam cylinder (see 9.1.6 Maintenance). The position of the TA RATEswitches 1-4, the DIP-switches A2 and B2 is not to be changed under no circumstances. For this reason the switches are sealed.

20 % humidification capacity

OFF

Power supply 24 VAC G/G0

manual drainage

drain valve fill valve

high level/foam sensor conductivity sensor

external TAM

green LED yellow LED red LED

immersed electrodes max. 5A

fig. 1

RS485 alarm relay humidity sensor

remote ON/OFF external controller

DIP A2: Alarm relay status 1

2

Relay energized (contact closed), when at least 1 alarm is active, otherwise not energized (contact open).

1

2

Relay not energized (contact open), when at least 1 alarm is active, otherwise energized (contact closed).

ON OFF

ON OFF

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DIP-switch „B“ : Auxiliary functions and automatic drain timings 1 2 3 4

DIP B1: complete drainage after 7 days without any humidification request ON: function disabled OFF (default): function enabled

1 2 3 4

DIP B2: automatic drainage with electrodes powered/not powered ON: electrodes powered during automatic drainage OFF (default): elctrodes not powered

ON OFF

ON OFF

1 2 3 4 ON OFF

1 2 3 4 ON OFF

DIP B3: automatic drainage when request is reduced by at least 25%. ON: new humidification capacity achieved by steam cycles OFF (default): 1. new humidification capacity is achieved by steam cycles, if the request is reduced by less than 25%. 2. automatic drainage, if the request is reduced by at least 25%

DIP B4: disabling of the pre-alarm and the warning for wornout cylinder (see alarm table 2) ON: warnings are never displayed. OFF (default): warnings are displayed when the cylinder is worn out.

DIP B5-6: automatic drainage time 5

6

ON

7

time = default

OFF

5

5 OFF

threshold = default + 33%

OFF

7

time = default + 66%

8

ON

6

ON

threshold = default - 30%

OFF

7

time = default + 33%

OFF

8

ON

6

ON

threshold = default

OFF

7

time = default - 30%

OFF

8

ON

6

ON

5

DIP B7-8: evaporation time threshold

ON

8

threshold = default + 66%

OFF

Change the default adjustment only after confirmation of the STULZ technical support. The dip-switches serve to adapt the drain cycle to extreme water conditions beyond the previously described limit values.

E/0605/20/78

Diagram 1:

Steam production: yellow LED - transient production "short flashing"

steam < 1% time 1-19% time 20-29% time

90-99% time Diagram 2:

Steam production: yellow LED - constant production "long flashing"

steam < 1% time 1-19% time 20-29% time

90-99% time 100% time

The yellow LED stays off when no steam is produced, whereas it stays continuously on at 100% of the nominal production. When steam is being produced at a transient production rate while approaching the steady-state production, the yellow LED is quickly turned on and off to produce 2 Hz-pulse sequences which are related to the actual steam production as shown in diagram 1. When the steady-state production is achieved, the yellow LED is slowly turned on and off to produce 0,5 Hzpulse sequences which are related to the actual steam production as shown in diagram 2. Each pulse sequence is separated from the following by a 3-second delay, so that the user can count the pulse number of a sequence and determine, using the diagram, the actual humidification capacity.

E/0605/20/79

9.1.6 Maintenance Please switch off the A/C unit at the controller and the main isolator before starting work and put the power circuit breaker F70 in the electrical box to position 0! The following work and checks can be carried out: - check steam hoses, condensate hoses, water hoses and other parts of the humidifier for external effects or wear. - Flush out the water drain.

Replacing the steam cylinder The steam cylinder needs replacing if the electrodes are so highly insulated due to the increasing calcification or furring that the water level in the steam cylinder constantly touches the sensor electrode. The specially constructed water filling beaker provides additional safety here, excessive water being routed to an overflow and being able to drain away there.

Warning note! The temperature of the discharged water is approx. 60°C during normal operation but can reach 100°C briefly, if the steam cylinder is emptied manually during maintenance work. The steam cylinder should be allowed to cool down slightly before removal. If the alarm code 11x long on the humidifier printed circuit board in the electrical section (also refer to Alarm table 2) occurs repeatedly, the steam cylinder has worn out and must be replaced. The life of a steam cylinder depends on the operating period and the hardness of the water.

Manual drainage By means of a switch on the humidifier board, you can manually drain the cylinder. After the drainage the switch must be reset to position "ON", otherwise no humidification can take place.

Position "ON"

Position "DR"

Switch off the power supply circuits to the humidifier before continuing the work! The steam cylinder can be unscrewed from the mount after releasing the hose clamp, pulling off the steam hose and disconnecting the electrical plug on the cylinder. The new steam cylinder is installed in the reverse sequence. The humidifier is re-started in accordance with the recommendations of the chapter "9.1.4 Commissioning".

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9.1.7 Malfunction causes / Remedy Alarm: Humidifier defect

In the event of this signal on the controller, please look for the exact cause of the fault on the humidifier printed circuit board in the electrical section of the A/C unit. If an alarm has been raised, the red light-emitting diode displays a flashing alarm code. The meaning of the alarm codes can be seen in the alarm table 2.

Repairs to the electrical components are only to be carried out by authorized trained staff or by STULZ Customer Service Department.

Diagram 3:

After the elimination of the fault press the key code twice.

Alarms: red LED - "short flashing"

no alarm time 1x flashing time 2x flashing time

9x flashing time

Diagram 4:

Alarms: red LED - "long flashing"

no alarm time 1x flashing time 2x flashing time

9x flashing time

E/0605/20/81

Alarm list Table 1 - Alarm types Type

Description

Reset (if alarm cause has been removed)

Blocking

CP-card stops humidifier.

manual: to restart, turn the cp-card off and then on again.

Disabling

CP-card stops humidifier.

• automatic • manual: to restart, turn the cp-card off Alarm codes: and then on again. each code is displayed in sequence. Note: the distinction between the automatic and manual reset is shown in the table below.

Warning

CP-card does not stop humidifier.

• automatic

Red LED

Alarm relay

The relay is normally open or normally close depending on DIP A2. The relay action is cumulative: • contact is closed (opened), if at least 1 alarm is active. • contact is opened (closed), if: - all alarm causes have been removed. - all alarms have been reset, either manually or automatically.

The codes are displayed even if the alarm causes have been removed; to stop displaying them, turn the cpcard off and then on again. Note: each alarm is not assigned to the relay (see table below)

Table 2 - Alarms Red LED Description & Causes flashes 2xshort Electrode over-current 1. water conductivity too high (usually when starting after a short stop) 2. high water level due to drain valve malfunction 3. high water level due to fill valve leakage 4. electrode malfunction

Remedy

3xshort No voltage at the electrodes: with the unit on, no steam is produced.

1. Check the external command signal: type (V or mA)? Value? blocking Connections? 2. Switch off the unit and disconnect it from the mains: check the internal electrical connections.

manual active

4xshort Internal memory error

1. Download the proper default configuration via HumiSet. blocking 2. If the problem persists, contact the STULZ customer service.

manual active

5xshort High conductivity of the supply 1. Switch off the unit and clean the conductivity sensor blocking electrodes; water 2. If the problem persists, change the source of supply water or install a suitable treatment system (demineralisation, even partial). Note: the problem will not be solved by softening the supply water.

manual active

E/0605/20/82

Type

blocking 1. Drain part of the water and re-start. 2. Verify that the drain valve is properly working. 3. Check for any leakage of the fill valve when the humidifier is switched off.

Reset

Alarmrelay manual active

Table 2 - Alarms (continued) Red LED Description & Causes flashes 2x long Cylinder depleted 3x long Lack of supply water

4x long Excessive reduction of steam production 5x long Drain malfunction 6x long User parameter error

Alarmrelay Do maintenance and/or replace the cylinder. warning manual not active 1. Check that the fill pipe from the mains to the humidifier and disabling manual active the internal pipe are not blocked or bent and that there is sufficient supply pressure (1-8 bar). 2. Check that the fill valve is properly working. 3. Check whether the counter-pressure onto the steam hose is higher than the maximum limit, preventing the entry of supply water into the cylinder by gravity. 4. Check that the steam outlet pipe is not choked and that there is no condensate inside. Remedy

Type

Reset

1. Cylinder completely depleted or excessive foam. Do disabling manual active maintenance to the cylinder. 1. Check the drain circuit and the proper operation of the disabling manual active drain valve. 1. Download the proper default configuration via HumiSet. blocking manual active 2. If the problem persists, contact the STULZ customer service.

7x long Supply water high conductivity pre-alarm

1. Check the conductivity of the supply water. 2. If necessary install a suitable demineralizer. Note: the problem will not be solved by softening the supply water.

warning

8x long External command signal not properly connected (only 2/10V) 9x long Cylinder full with steam production not in progress

1. Check the connection to the (external) controller.

disabling alarm: active automat.

with the humidifier switched off: 1. Check for any leaks from the fill valve or the condensate return pipe. 2. Check that the level sensors are clean. Foam is usually caused by surfactants in the water (lubricants, solvents, detergents, water treatment agents, softeners) or an excessive concentration of dissolved salts: 1. Drain and clean the water supply pipes. 2. Clean the cylinder. 3. Check for the presence of softeners. (in this case, use another type of supply water or reduce the softening)

disabling manual active

warning

display: not manual active reset

Do maintenance and/or replace the cylinder.

warning

display: not manual active reset

10xlong Foam inside the cylinder

11xlong Cylinder almost completely depleted

Note:

display: not automatic active reset

"manual reset" means one of the following activities - pulling off and putting on the power supply plug G/G0 (see 10.1.5 operation - fig. 1) - switching off and on the control fuses F02 (Caution: unit is switched off.)

E/0605/20/83

9.2 Heating The heater is an optional extra for your A/C unit. It is installed complete and integrated in the function and method of operation of the A/C unit. It is used to heat up the air. The following versions of the reheat are available: Electrical reheat Low pressure hot water reheat (LPHW) Refrigerant reheat (RF)

Electrical reheat

LPHW reheat

RF reheat

The LPHW reheat is to be connected to an external hot water circuit. The water supply is controlled via an electrically actuated LPHW valve. The LPHW valve is controlled via the controller. Refer to the C1002 manual.

The refrigerant reheat is integrated in the refrigerant circuit in accordance with the refrigerant diagram in the "Appendix". The refrigerant supply is controlled via an electrically-actuated 3-way solenoid valve. The solenoid valve is controlled via the controller. Refer to the C1002 manual.

CCD/U 171/201

CCD/U 41-121 The heater is connected in accordance with the connection diagram (refer to "Appendix"). It is controlled and monitored by the controller. The values for switching on and off are adjusted on the controller. Refer to the C1002 manual.

Operation The reheat is controlled and monitored by the controller. No further measures are required for operation.

Maintenance Clean the reheat annually from contaminations and check it for damage.

Installation The reheats are installed and connected in the A/C unit. The LPHW reheat is to be connected on site to the external hot water circuit. The pipelines are to be routed out of the A/C unit in accordance with the section Installation "pipeline and cable ducts". The LPHW reheat is connected via a 22 mm copper pipe.

E/0605/20/84

Electrical Heating Alarm

Symptom

Action

Comments

1 The overheat protection has triggered.

Check whether the fins of the heating are dirty. Raise air flow (at CCD/U 41-121) Mesure the current consumption of the heating.

Repairs to the electrical components are only to be carried out by authorized trained staff or by STULZ Customer Service Department.

2 Power circuit-breaker has triggered.

for CCD/U 171/201: Check power circuit-breakers and electrical heater for damage. Replace defective power circuit breaker or electrical heater.

The A/C unit is to be switched off at the master switch before opening it.

for CCD/U 41-121: In this case there is no display on the C1002.

3 Cable connection to heater open circuit.

Check cable connection.

After the elimination of the fault press the key code twice.

E/0605/20/85

9.3 Raised floor stand The floor stand is used to adjust the height of the A/C unit to the existing raised floor and consists of an encircling rectangular profile of galvanized steel with adjustable screw sockets. Anti vibration compound is recommended between concrete floor and base plate. The delivery volume contains: 4 bars of rectangular profile 70 x 40, 4 mafund plates, 4 adjustable supports, which can be shortened on site, 8 hammer head screws M8 x 30

CCD 41-121 Connecting the bars (View from below) Angle Connection 595

620

575

600

495

Positioning of supports

Rectangular profile 70 x 40 x 2 Cut out in raised floor

CCD 171-201

1020

E/0605/20/86

830

1000

810

Positioning of supports

Rectangular profile 70 x 40 x 2 Cut out in raised floor

Minimum distances and mounting instructions

Z (min. 30)

Floor stand

- the dimensions of the openings in the raised floor (X and Y) are 10 mm longer than the raised floor stand. The joint must be closed by customers with a continuous seal.

Y

Z (min. 30)

X

Z

- the raised floor cutting (notch) should at least be 15° and must not have any contact to the raised floor stand, which could result in bone-conduction.

Z (min. 800) - a concrete foundation is recommended in the area of the raised floor supports. - the raised floor supports have to be installed on vibration dampening material (do not screw down the supports!).

X/Y = Opening in raised floor Z = Limit of distance

- prior to installation of the A/C unit, the raised floor must be installed 7 mm higher than the raised floor plates, as the mafund plates are compressed by the weight of the A/C unit.

General design of the raised foor stand

10 mm

10mm 600 mm / 1000 mm

Raised floor connection refer to details on next page

Raised floor

Upper edge of rough floor

Hammer head screw M8 x 30 Recommended concrete foundations (no (floor) finish)

Upper support part Range of adjustment : ± 20mm

Supporting pipe

max 500 min 250

Continuous seal Raised floor stand Raised floor support Mafund strips

E/0605/20/87

Detail of raised floor connection

1 2 3 4 5 6 7 8 9 10 11 12 13

Sealing detail when distance Z < 100 mm

E/0605/20/88

Raised floor stand Adjustable support plate Adjusting nut Support pipe Support base Mafund strips Raised floor cut out angle Continuous seal profile Before unit installation Raised floor plate Angled bracket Permanently elastic seal Fixing

Sealing detail when distance Z > 100 mm

9.4 Refrigerant Circuit Options STULZ A/C units of the type A, G are equipped as standard with a refrigerant circuit which can be expanded with various options.

Description A/C unit type A with hot gas bypass extension Low temperature section

Air section

Collector Evaporator

Hot gas bypass Fan

The refrigerant circuit of your A/C unit is equipped with a compressor which is designed for 12 switching cycles per hour. The following operating curve for the refrigerant circuit results from these switching on and off phases. On 100% Compressor Off 0% In order to reduce the switching rate and thus increase the life of the compressor, the refrigerant circuit can be enhanced by a hot gas bypass or with a suction throttle. The hot gas bypass has a control range of 50 to 100%.

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A/C unit type A with suction throttle extension Low temperature section

Air section

Collector Evaporator

Fan

Suction throttle

The suction throttle has a control range of 40 to 100%.

E/0605/20/90

Adjustable HP/LP switch The compressor is controlled and monitored by the controller of your A/C unit. Permanently set high-pressure and low-pressure switches are required as sensors for this. An adjustable version of these HP/LP switches is supplied in order to individually adapt the switching points for the high pressure and low pressure to the operating conditions.

Internal condenser

Technical Data Type of condenser for A/C unit Condenser output Air flow No. of fans Motor power Air inlet temperature Temp. of condensation Electrical connection

KSI 018 KSI 033 CCD/U CCD/U 41-121 A 171-201 A kW 17.5 32 m³/h 4000 7500 1 1 kW 0.55 2.2 °C 32 32 °C 48 48 V/-/Hz 230/1/50 400/3/50

Dim.

KSI 018

KSI 033

A B C D E F G H J K L

840 400 120 100 361 329 72 136 600 600 1850

1025 740 210 80 361 415 69 242,5 810 900 1950

The internal condenser is an option for A-type units and is installed on the left side of the A/C unit. It contains a fan with a motor and a heat exchanger which is connected with the A/C unit by copper tubes.

E/0605/20/91

9.5 Air Circuit Options EU5 filter The EU5 filter is used instead of the standard EU4 filter and cuts down on air contamination to a greater extent.

Condensate pump The condensate pump extracts the condensate water occurring in the condensate water tray and pumps it into the local sewage circuit. The condensate water tray is located beneath the filter elements in the A/C unit. A MARCH AB-1F pump is used which is installed in your A/C unit at the factory. The pump is provided with an integral float switch. The float switch switches the pump on and off automatically. The 6 m long drain hose (6 mm diameter) is to be connected to the local effluent system. The pump is connected in accordance with the terminal diagram (refer to "Appendix"). When routing the drain line, ensure that it is not kinked.

Return air suction from behind - Upflow

Dimensions CCU

A

B

C

D

41-121 171-201

440 300

400 900

80 50

100 50

At the return air suction from behind the air duct has to be fixed at the back with M8 screws. In this case the standard filter can not be used. A special filter has to be installed in the air duct, instead. 4xM8-nut set up from outside

E/0605/20/92

Air discharge plenum - Upflow The air discharge plenum is set on the A/C unit without being screwed.

Dimensions CCU

A

B

C

D

E

H

41-121 171-201

572 782

600 1000

425 625

525 825

325 425

500 500

E/0605/20/93

Unit base for air discharge The unit base is designed for downflow units which are installed in rooms without a raised floor and serves for the discharge of the supply air. With upflow units this unit base serves for the return air suction. The room air to be cooled is sucked in through the air grilles, which are not shown in the illustration.

CCD/U 41-121

35 35 60 0

0 60

50

37.5

325

400

35

.5 37 37 .5 52 5

Installation Please note that the unit base has to be bolted to the unit.

E/0605/20/94

5 52

Unit base for air discharge for CCD/U 171-201

315

insulation of foamed material

13 3.5

35 51 5 315 400

35

8.5

8.5

43 6

5 41 6 33

.5

39

00 10

.5 8.5

51 5 78 2

39 8.5

42.5

60

42.5

315

5 41

16 x Ø3.2

13 3.5

E/0605/20/95

Base for duct connection and air damper - Upflow The base is set on the A/C unit without being screwed. The duct is fixed on the base with 4 M8 screws.

Dimensions Unit size

A

CCU 41-121 CCU 171/201

B

C

E

F

G

H

400 400 523 552 40 56 12x9.5 17 675 800 738 977 31.5 88.5 26x9.5 20

4xM8-nut set up from above. (only for CCU 41-121)

E/0605/20/96

D

Air damper An air damper can only be provided on the discharge side for downflow and upflow units. The most frequent use of the air damper is shown, on the discharge side of upflow units. For the installation of an air damper on the upflow unit a connection plate (see page before) is necessary.

Dimensions Unit size

A

CCD/U 41-121 CCD 171/201 CCU 171/201

B

345 400 500 700 500 700

175 120 120

B

H

A

H

Continuous flange, 38 mm wide

E/0605/20/97

Fresh air intake By means of the fresh air intake outside air is taken in, conducted through a filter into the unit and used to cool the room air. If the outside temperature is below the room temperature the required cooling capacity is reduced. The fresh air intake consists of three parts: 1. Collar 2. Filter cartridge 3. Cover The collar is bolted at the rear wall of the unit. The filter cartridge is put on the collar in the unit and is closed with the cover. This way the outside air is only taken in via the filter surface.

Unit rear side Insulation

Collar

Dummy rivet

Filter cartridge

Cover

We recommend to install an additional fan between the unit and the fresh air intake, to control the fresh air ratio.

E/0605/20/98

Opening in the unit rear wall - Downflow CCD 110 CW

CCD 200 CW 150

120

120

150

100 mm

30

30

1850

1850

100 mm

600

1000

Opening in the unit rear wall - Upflow CCU 110 CW

CCU 200 CW 1000

1850

1850

600

100 mm

280

30

30

320

100 mm

150

350

E/0605/20/99

Ecocool With the Ecocool function outside air is used for cooling the room air and is mixed with the return air via louvers. Two louvers per unit are installed. At the downflow unit the louvers are situated on top and at the upper part of the rear side, at the upflow unit the louvers are situated at the bottom part of the front and the rear side. The louvers at the rear allow outside air to come into the unit. The louver on top of the downflow unit and at the front of the upflow unit allow room air to come into the unit. The louver installed on top of the inside condenser serves to diminish the exceeding pressure in the room, as a result of the intake of additional outside air. The surplus room air flows via the opened louver into the inside condenser and through the fan intake and heat exchanger (which are out of operation) to the outside. To cut down the dust content of the outside air two filters (EU2 and EU4) are installed upstream the evaporator. They are part of the delivery volume. The controller C5000 and a special software are required for the louver control and must be ordered separately.

Actuators and end position switch Louver actuator NM 24 - SR for fresh or return air The louver actuator has no end position switch and is overload-proof. When the limit stop of the louver is attained, the actuator stops automatically. After switching on the power supply or actuating the push button on the actuator a function test with calibration is automatically executed. The actuator scans the two end positions and adapts its electrical operating range of 2-10 V DC and the running time of 150 s to the actual mechanical louver swing angle. The actuator then adjusts itself on the position which is required by the control signal. The actuators are constantly supplied with 24 V AC. The control is realized with 0-10 V DC. The actuator NM24-SR is mounted on the fresh air louver. Function test:

By pressing the button at the housing the gear shift is released, and the louver can be operated manually.

Louver actuator NM 24 for return air (option pressure compensation) The louver actuator has no end position switch and is overload-proof. When the limit stop of the louver is attained, the actuator stops automatically. The control is realized by a 24 V AC/DC signal. Function test:

E/0605/20/100

By pressing the button at the housing the gear shift is released, and the louver can be operated manually.

Configuration of the C5000 To start the A/C unit with the free cooling device, the special software has to be installed. (The EPROMs are installed by Stulz Hamburg). After the start the software version is displayed at the C5000. In the menu point "Control/module functions/cooling/ECO-louver the start parameters: start temperature and gradient can be modified. In the menu point "Service/equipment/cooling/ECO-louver the unit configuration must be determined (made by Stulz Hamburg). For the ECO-louver the louver 1 field must be set on "S" ( = proportional).

Control Two conditions are necessary for enabling the free cooling: 1. The room humidity must be within the limits, at which the unit control neither humidifies nor dehumidifies. 2. The outside temperature value, which can be set in the menu "Control/module functions/cooling/ECOdamper", must be passed under. The outside temperature is measured by an outside air temperature sensor connected to the C5000. The limit value can by adjusted from 0 to 99°C. In practical use the best results are obtained with a value in the range of 16-20°C. The free cooling is switched off (and thus the cooling by compressor is switched on), if either the outside temperature rises above the adjusted value (ECO-off) in the above mentionned menu, or the room humidity is half of the humidification hysteresis below the value, at which the humidification is turned off (point 1 in the control diagram) or the room humidity is half of the dehumidification hysteresis above the value, at which the dehumidification is turned off (point 2 in the control diagram). The louvers are proportionally controlled. In the same extent, as the outside air louver opens, the room air louver closes. The louver at the condenser is completely opened, when the free cooling is enabled and competely closed at compressor operation.

E/0605/20/101

Control Diagram

▲

1. Condition for enabling the free cooling

1

▲

▲

Humidif. Start

Point 1 Humidif. Stop

rel. Humidity

▲

Dehumidification hysteresis 2

2. Condition for enabling the free cooling

▲ ▼ Eco-off

▲

0

Humidification hysteresis 2

Dehumidif. Point 2 Dehumidif. Stop Start

▼

1

▲

▼

▲

Setpoint

▲

▼

▼

0

outside temp.

Wiring ECO-louver control The proportional signal (0-10V) is present to pin X1: 14+15 at the basic I/O-board. Condenser louver control The digital signal is present to pin X1: 6 at the extension I/O-board. The louver has to be configured. Outside temperature sensor A temperature sensor has to be connected to pin X1: 12 of the controller C5000.

Restrictions GE-, CW- and dry cooler operation is no longer available. Another louver (e.g. at the discharge) can not be controlled.

E/0605/20/102

Dimensions - CCD 41 - 121 with Ecocool louvers

front side

250 63

376

63

rear side

375

104

583

1311

1876

376 81

642

600

110

1986

104

583

E/0605/20/103

Dimensions - CCU 41 - 121 with Ecocool louvers Front

Rear

49

376

250 63

376

213

63

1850

Left side

583

110

599 829

110

104

375 583 600

E/0605/20/104

104

Dimensions - Internal Condenser KSI 010 with Ecocool louvers left side

rear side

280

front side

253

96.5

122.5

1366.5

1850

1960

404

50.5

50

50 300

63

91

250

376

63

131

400

129 125 129 383

E/0605/20/105

Dimensions - CCD 171 - 201 with Ecocool louvers front side

583

104

63

1874

125 125 125 125 125 125 876

1184

1994

125 125 125

104

rear side

583

117

89

852

1000

876

E/0605/20/106

63

9.6 Control Options C5000 Instead of the C1002 controller a C5000 controller can be fitted. For the operation of the C5000 exists a separate manual.

Remote on/off switch With this option you can also start your A/C unit from another point other than directly at the C1002 controller. The switch required for this is also suitable for wall mounting.

Water detector The water detector consists of two electrodes with a voltage difference of 24 V, which are fitted in the raised floor. If water appears in the raised floor, a current flows between the electrodes, the C1002 switches off the humidifier and the signal "LLS" appears on the display.

Fire stat There are two versions of the fire stat available: provided with a heat detector, it triggers the signal "fire" if there is excessive heat on the C1002. Equipped with a smoke detector, it reacts in a similar manner when there is smoke. In both cases the C1002 switches off the A/C unit and closes the louvered flaps (if fitted).

E/0605/20/107

Extension card for C1002 This card is necessary for the complete functionality and a sequencing between two units together with a water detector and a second heating stage. It is also necessary if an input for a fire stat and/or an input for an Ultrasonic conductivity alarm in a unit with a compressor is needed. With the extension card, additional inputs and outputs are provided to the CompTrol 1002, such as a louver output, a second compressor output, two pressure alarms, an airflow alarm for a second module and an input for a temperature limit. The extension card is fastened to the CompTrol 1002 by means of the two distance pieces enclosed. The electric connection to the basic board is made with a 20-channel plug connector.

Heating 1 Heating 2 OEM humidification ENS humidification Sequencing Water detector Louver Fire stat/smoke detect. Temp. limitation

x x x

x x x

x x x x x

x x x x x x x x

x x x x x x x x x x x x x x x x x x x

x = extension card required = this combination is not possible.

E/0605/20/108

Fire stat/smoke detect. Temp. limitation

Sequencing Water detector Louver

Heating 1 Heating 2 OEM humidification ENS humidification

When you need an extension card for CCD/U 41-201 A/G units :

x x x x x x x x

x x x x x x x x

Appendix

The following list contains all documents which are supplied with your unit, apart from the operating instructions.

UNIT-SPECIFIC DOCUMENTS Test report on unit final inspection ........................................................................................... Test report on continuous testing ............................................................................................. Test report on final acceptance ................................................................................................. Test certificate for pressure test ................................................................................................ Replacement parts list ............................................................................................................... Refrigerating diagram ................................................................................................................ Terminal plan for electrical engineering ................................................................................... Wiring diagram ..........................................................................................................................

E/0605/20/109

Customer service STULZ customer service ensures optimum operating reliability by means of preventative maintenance and repair during the entire service life of your A/C units. Customer service is available to you round the clock. You can contact our customer service at the STULZ branch responsible for you.

VICE - SER Z L STU

Your partner for a safe climate AIRCONDITIONING

For your service address please look at the back cover of this manual.

E/0605/20/110

STULZ GmbH Klimatechnik Holsteiner Chaussee 283 22457 Hamburg Telephone: (040) 55 85 0 (switchboard) Telex: 02 138 68 Telefax: (040) 55 85 308

A/CUNITS

MINI-SPACE

AIRCONDITIONING

BRIEF OPERATING INSTRUCTIONS Your A/C unit originates from the STULZ Compact climate product range and is used to air condition rooms. The following Frigene refrigerant (CFC) is contained in the refrigerant circuit of your A/C unit at the following system pressures: Attention, A-Units The refrigerant circuits are pre-filled at the works. The complete filling weight has to be indicated an the maker's plate after the start-up. Caution. Only use the refrigerant stated on the maker's plate!

Refrigerant : R........ Quantity : .......... kg

Nominal CFC 25 bar Perm. water pressure 16 bar

Please obtain the type of your A/C unit from the type code on the maker's plate. Before commissioning the A/C unit, it is essential to read and follow the operating instructions.

Switching the A/C unit on and off The A/C unit is switched on and off by pressing an on/off switch on the controller.

Controller Switching off the complete A/C unit The complete A/C unit is switched off via the controller and via the built-in master switch. To do this, open the door of the elctric cabinet and put the master switch in position "0".

Master switch First aid measures -

-

-

If health problems occur during or after handling fluorinated hydrocarbons, a doctor is to be consulted immediately. The doctor is to be informed that the work involved using fluorinated hydrocarbons. In the case of acute effect, the casualty is to be brought into the fresh air as quickly as possible. The casualty is never to be left unsupervised. If the casualty is not breathing, immediately introduce mouth-to-mouth resuscitation.

-

-

If the casualty is unconscious or very dazed they must not be given any liquid. Splashes of fluorinated hydrocarbons in the eyes can be blown out by an assistant or fanned out. Then rinse with water. Notes for the doctor: Do not give any preparations from the adrenalin ephedrine group (nor any noradrenaline) to treat shock. Obtain further information from the poison accident centres. E/0605/20/111