Stulz Split-Air CST 40 User manual

230/1/50 400/3/50
SPLIT-AIR
A/C UNITS
Index 39
Edition 2.04
PRECISION A/C UNITS
AIR CONDITIONING
OPERATING INSTRUCTIONS

E/0204/39/2

E/0204/39/3
Contents Page
Introduction 4
Technical Data 6
Electrical Data 8
Dimensions 10
1. Unpacking and Inspection 16
2. Unit Identificaton 17
3. Operating Principle 18
4. Precautions 24
5. Safety Considerations 24
6. Precautions when handling the Unit 25
7. Vibrations 25
8. Mechanical Parts 25
9. Cooling Components 26
10. Motors 27
11. Control, Monitoring and Safety Components 27
12. Installation 45
13. Electrical Connections 52
14. Start-up 55
15. First Checks after starting the Unit 55
16. Switching off 55
17. Maintenance 55
18. Inactivity 59
19. Options 60
20. Residual Hazards and Emergency Information 71
21. Disassembling the Unit 75
22. Faults, probable Causes, possible Remedies 76
The manufacturer reserves the right to make alterations without notice.

E/0204/39/4
Introduction
Modifications in comparison to edition 4.02
• Technical/electrical data have been changed.
• The operating modes have been extended by a desciption of the mixed mode.
• Chapter 8 "Mechancial Parts" has been extended by a description of the panel insulation and
the fixing brackets.
• Sequencing description in chapter 11 has been added.
• The digital input assignment has slightly been changed.
• The description of the setpoint adjustment has been changed.
• The user setup parameters are listed.
• A description of the sensor calibration has been added.
• Chapter 12 "Installation" has been enriched by a table which shows the pipe diameters of the
connection piping dependent on the pipe length.
• Chapter 13 "Electrical connection" has been extended by some notes.
• In chapter 17 mean operating times for the component exchange are listed.
• The description of nearly all options has been extended by text. All available options are now
described. Beyond this, some options have been changed substantially:
- GRxxSOP this option (previously GRxxS) now includes an overpressure damper which is
fixed at the exhaust air grille.
- SIGC3 the cable layout has changed.
The following options have been added:
- KPDC1010 - Keypad, SERC1010 - serial adapter RS485 for gateway connection, SPLIT-
TER - LAN-Y-plug for sequencing.
The following information is supplied in accordance with Standards:CE73/23,CE93/68,CE89/392:
MANUFACTURER'S NAME AND ADDRESS
STULZ GmbH
Holsteiner Chaussee 283
22480 Hamburg
DATA REGARDING THIS MODEL Air conditioner for telecom application
YEAR OF MANUFACTURE As shown on the technical name plate on the unit
HOW TO CONSULTTHIS MANUAL
This document contains general informations valid for all models of the series.Further
informations like wiring diagrams etc. will be delivered with each unit.
THIS MANUAL IS INTENDED FOR
OWNER OF THE APPLIANCE
PERSON RESPONSIBLE FOR ITS INSTALLATION
PERSON RESPONSIBLE FOR MANAGING THE PRODUCT
PERSON RESPONSIBLE FOR ORDINARY MAINTENANCE
PERSON RESPONSIBLE FOR ITS DISASSEMBLY

E/0204/39/5
PURPOSE OF THE INFORMATION CONTAINED INTHIS MANUAL:
CORRECT HANDLING performed by unskilled personnel
CORRECT INSTALLATION performed by skilled personnel;
CORRECT START-UP performed by personnel trained by STULZ;
CORRECT MANAGEMENT performed by skilled personnel;
CORRECT MAINTENANCE performed by skilled personnel;
CORRECT ORDER FOR SPARE PARTS, made by skilled personnel;
CORRECT DISPOSAL OF THE PRODUCT, made by skilled personnel.
RESTRICTIONSTOTHE USE OFTHIS MANUAL
They apply to any operations that must be performed by highly skilled personnel.
WHERE AND HOWTO STORETHIS MANUAL
Inside the electric cabinet or together with any other literature concerning the equipment which
utilizes the product, provided it is a dry and clean place.
In the event of the manual being misplaced or damaged, the customer may require, for a fee, a
new manual, by quoting the model and serial number shown on the technical name- plate, by
contacting your local STULZ partner.
CURRENT TECHNOLOGY
This manual reflects the state of the art existing at the time the product is marketed and shall not
be deemed to be inadequate for the sole reason that it has not been updated as a result of any
new experience.
UPDATES
STULZ reserves the right to update the product and relevant manual without being required to
update previous products and manuals other than in exceptional circumstances.To require or
receive any updates of the instructions manual or amendments thereto, which shall be deemed
to be an integral part of the manual, please contact your local STULZ partner.
FOR FURTHER INFORMATION
Please contact your local STULZ partner.
Any suggestions or recommendations made by installers or users of the product for the purpose
of improving the product or the contents of this manual, will be greatly appreciated by the
Manufacturer.
IN THE EVENT OF SALE OFTHE PRODUCT
Please advise STULZ GmbH of the address of the new owner so as to enable the dispatch of
any updates to the manual, otherwise STULZ GmbH shall be relieved of any subsequent
liabilities

E/0204/39/6
* Ambient temp. 35°C; Inside cabinet temp. 25°C RH 40%
** measured at 2m distance from the unit front, free field, unit operating in cooling mode at nominal conditions. Referred to type 1.
*** Type 1: with free cooling & emergency ventilation; DC fans;
Type 2: cooling only; with AC fans
Technical Data Split-Air CST 40 / 50
Cooling capacity *
Sensible cooling capacity*
Refrigerant
Refrigerantcharge
Condenserfan
Number/Type
Air flow
External static pressure
Evaporator fan (Type 1)***
Voltage
Number/Type
Air flow
External static pressure
Evaporator fan (Type 2)***
Number/Type
Air flow
External static pressure
EER index (type 2)*
Outsideoperating limit temp. min/max
Shelteroperating limit temp. min/max
Duty cycle
Outdoor unit
Noiselevel**
Weight
Height /Width / Depth
Indoor unit type 1
Noiselevel**
Weight
Height /Width(with brackets) / Depth
Indoor unit type 2
Weight
Height /Width(with brackets) / Depth
kW
kW
kg
m³/h
Pa
V
m³/h
Pa
m³/h
Pa
W/W
°C
°C
%
dB(A)
kg
mm
dB(A)
kg
mm
kg
mm
CST 40
3.8
3.8
R407c
1.95
1 / 315 axial
1900
10
24DC/48DC
1 / 280 radial
1000
60
2 / 220 radial
1000
60
1.88
-20/+45
+20/+40
100
56
60
580/800/350
66
70
310/856/1050
65
310/856/800
CST 50
5.2
4.8
R407c
2.1
1 / 315 axial
2000
5
24DC/48DC
2 / 220 radial
1100
145
2 / 220 radial
1100
35
2.55
-20/+45
+20/+40
100
56
60
580/800/350
72
70
310/856/1050
65
310/856/800

E/0204/39/7
* Ambient temp. 35°C; Inside cabinet temp. 25°C RH 40%
** measured at 2m distance from the unit front, free field, unit operating in cooling mode at nominal conditions. Referred to type 1.
*** Type 1: with free cooling & emergency ventilation; DC fans;
Type 2: cooling only; with AC fans
Technical Data Split-Air CST 60 / 80
Cooling capacity *
Sensible cooling capacity*
Refrigerant
Refrigerantcharge
Condenserfan
Number/Type
Air flow
External static pressure
Evaporator fan (Type 1)***
Voltage
Number/Type
Air flow
External static pressure
Evaporator fan (Type 2)***
Number/Type
Air flow
External static pressure
EER index (type 2)*
Outsideoperating limit temp. min/max
Shelteroperating limit temp. min/max
Duty cycle
Outdoor unit
Noiselevel**
Weight
Height /Width / Depth
Indoor unit type 1
Noiselevel**
Weight
Height / Width(with brackets) / Depth
Indoor unit type 2
Weight
Height / Width(with brackets) / Depth
kW
kW
kg
m³/h
Pa
V
m³/h
Pa
m³/h
Pa
W/W
°C
°C
%
dB(A)
kg
mm
dB(A)
kg
mm
kg
mm
CST 60
6.4
5.6
R407c
2.5
1 / 420 axial
2800
5
24DC/48DC
1 / 310 radial
1400
10
1 / 310 radial
1400
40
2.47
-20/+45
+20/+40
100
56
80
640/950/400
63
90
375/956/1300
85
375/956/1000
CST 80
8.4
7.8
R407c
3.2
1 / 450 axial
3400
5
24DC/48DC
2 / 280 radial
2150
5
2 / 310 radial
2150
60
2.74
-20/+45
+20/+40
100
60
80
640/950/400
69
90
375/956/1300
85
375/956/1000

E/0204/39/8
CST 40 CST 50
Electrical Data Split-Air CST 40 / 50
Outdoor Unit
Power Supply Code
Nominalvoltage
Toleranceon voltage
Phase
Frequency
Toleranceonfrequency
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)*
Controlvoltage
Compressor
Powerconsumption*
Operatingcurrent (OA)*
Max.current (FLA)
Lockedrotor current(LRA)
CondenserFan
Powerconsumption*
Operatingcurrent (OA)*
Indoor UnitType 1**
Voltage
Toleranceon voltage
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
EvaporatorFan
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
Indoor UnitType 2**
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
EvaporatorFan
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
* Ambient temp. 35°C; Inside cabinet temp. 25°C RH 40%
** Type 1: with free cooling & emergency ventilation; DC fans;
Type 2: cooling only; with AC fans
00
230
220-240±10%
1
50
±2%
1.8
8.4
43.6
24
1.73
7.8
11.9
43
42
400
380-420±10%
3+N
50
±2%
1.8
4.2
22.6
24
1.73
3.6
5.4
22
V
V
ph
Hz
kW
A
A
Vac
kW
A
A
A
kW
A
VDC
VDC
kW
A
A
kW
A
A
kW
A
A
kW
A
A
00
230
220-240±10%
1
50
±2%
1.9
8.7
47.6
24
1.74
8.1
11.4
47
42
400
380-420±10%
3+N
50
±2%
1.9
3.8
24.6
24
1.74
3.2
4.2
24
0.11
0.58
24 / 48
22-28/43-56
0.13 / 0.13
6.1 / 3.05
9.25 / 5.42
0.1 / 0.1
4.82 / 2.42
8 / 4.8
0.18
0.82
2 x 0.7
0.18
0.82
2 x 0.7
0.11
0.58
24 / 48
22-28/43-56
0.25 / 0.24
11.75 / 5.66
17.25/ 10.22
0.22 / 0.21
10.5 / 5.04
2 x 8 / 4.8
0.19
0.83
2 x 0.7
0.19
0.83
2 x 0.7

E/0204/39/9
CST 60 CST 80
Electrical Data Split-Air CST 60 / 80
* Ambient temp. 35°C; Inside cabinet temp. 25°C RH 40%
** Type 1: with free cooling & emergency ventilation; DC fans;
Type 2: cooling only; with AC fans
Outdoor Unit
Power Supply Code
Nominalvoltage
Tolerance on voltage
Phase
Frequency
Tolerance onfrequency
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)*
Controlvoltage
Compressor
Powerconsumption*
Operatingcurrent (OA)*
Max.current (FLA)
Lockedrotor current(LRA)
CondenserFan
Powerconsumption*
Operatingcurrent (OA)*
Indoor UnitType 1**
Voltage
Tolerance on voltage
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
EvaporatorFan
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
Indoor UnitType 2**
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
EvaporatorFan
Powerconsumption*
Operatingcurrent (OA)*
Lockedrotor current(LRA)
00
230
220-240±10%
1
50
±2%
2.5
11.3
61.7
24
2.29
10.6
14.8
61
42
400
380-420±10%
3+N
50
±2%
2.5
4.8
32.7
24
2.29
4.1
5.1
32
V
V
ph
Hz
kW
A
A
Vac
kW
A
A
A
kW
A
VDC
VDC
kW
A
A
kW
A
A
kW
A
A
kW
A
A
00
230
220-240±10%
1
50
±2%
2.8
13.0
76.9
24
2.6
12.1
17.3
76
42
400
380-420±10%
3+N
50
±2%
2.8
5.6
40.9
24
2.6
4.7
6,2
40
0.16
0.74
24 / 48
22-28/43-56
0.13 / 0.13
5.73 / 2.98
12.25 / 6.12
0.1 / 0.1
4.48 / 2.35
11 / 5.5
0.14
0.63
1.5
0.14
0.63
1.5
0.19
0.92
24 / 48
22-28/43-56
0.2 / 0.2
9.68 / 4.84
17.25/ 10.23
0.2 / 0.2
9.68 / 4.84
2 x 8 / 4.8
0.28
1.27
2 x 1.5
0.28
1.27
2 x 1.5

E/0204/39/10
A.
B.
A
C
B
C.
Dimensions - Inside Unit CST 40/50 without free cooling
15
320 310
800
856
800
54,5
15
320 80
80