Stulz CVC 07 001yy User manual

230/1/50-60 400/3/50
MINI-AIR
A/C UNITS
Index 30A
Edition 12.03
PRECISION A/C UNITS
AIR CONDITIONING
OPERATING INSTRUCTIONS

E/1203/30A/2

E/1203/30A/3
Contents Page
Introduction 4
Technical Data 6
Capacity Diagrams 8
Dimensions 13
1. Unpacking and Inspection 14
2. Unit Identificaton 15
3. Operating Principle 16
4. Precautions 18
5. Safety Considerations 18
6. Precautions when handling the Unit 19
7. Installation 19
8. Vibrations 27
9. Mechanical Parts 27
10. Cooling Components 27
11. Motors 28
12. Control, Monitoring and Safety Components 29
13. Electrical Connections 30
14. Start-up 31
15. Adjusting the Temperature 31
16. First Checks after starting the Unit 32
17. Switching off 32
18. Maintenance 32
19. Inactivity 33
20. Options 34
21. Residual Hazards and Emergency Information 36
22. Disassembling the Unit 40
23. Faults, probable Causes, possible Remedies 41
The manufacturer reserves the right to make alterations without notice.

E/1203/30A/4
Introduction
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
PURPOSE OFTHE INFORMATION CONTAINED IN THIS 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.

E/1203/30A/5
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/1203/30A/6
Technical Data CVC 07 001yy - CVC 20 001yy (at 50 Hz)
* 50°C at 60 Hz
** measured at 2m distance from the unit rear side (condenser side), free field, external temp. higher than 40°C
*** measured at 2m distance from the unit front side (evaporator side), free field, external temp. higher than 40°C
Coolingcapacity L35L35- (DIN3168)
Coolingcapacity L35L50- (DIN3168)
Refrigerant
Condenserfan
Number/Type
Air flow
Evaporatorfan
Number/Type
Air flow
Refrigerantcharge
Externaloperating limit temp. min/max
Cabinetoperating limit temp. min/max
External noise level **
Internal noise level ***
Duty cycle
Weight
Height /Width / Depth
ElectricalData
Power Supply Code
Nominalvoltage
Toleranceon voltage
Phase
Nominalfrequency
Toleranceonfrequency
PowerconsumptionL35L50
Lockedrotor current(LRA)
Operatingcurrent(OA)
CondenserFan
Powerconsumption
Operatingcurrent
EvaporatorFan
Powerconsumption
Operatingcurrent
20
230
±10%
1
50-60
± 2%
1190
20
6.1
165
0.73
61
0.27
CVC 20 0 01yy
2000
1700
R134a
1/Ø225radial
850
1/Ø190radial
390
0.7
-20/+55*
+25/+45
71
62
100
44
1060/406/233
W
W
m³/h
m³/h
kg
°C
°C
dB(A)
dB(A)
%
kg
mm
V
ph
Hz
W
A
A
W
A
W
A
CVC 07 0 01yy
750
580
R134a
1/Ø190radial
400
1/Ø150compact
(axial)
220
0.35
-20/+55*
+25/+45
62
52
100
25
774/308/221
CVC 14 0 01yy
1400
1170
R134a
1/Ø220radial
650
1/Ø190radial
390
0.5
-20/+55*
+25/+45
73
62
100
42
1060/406/233
20
230
±10%
1
50-60
± 2%
400
16
2.3
61
0.27
29
0.15
20
230
±10%
1
50-60
± 2%
850
17
4.1
90
0.4
61
0.27

E/1203/30A/7
Technical Data CVC 28 001yy - CVC 41 001yy (at 50 Hz)
Coolingcapacity L35L35- (DIN3168)
Coolingcapacity L35L50- (DIN3168)
Refrigerant
Condenserfan
Number/Type
Air flow
Evaporatorfan
Number/Type
Air flow
Refrigerantcharge
Externaloperating limit temp. min/max
Cabinetoperating limit temp. min/max
External noise level **
Internal noise level ***
Duty cycle
Weight
Height /Width / Depth
ElectricalData
Power Supply Code
Nominalvoltage
Tolerance on voltage
Phase
Nominalfrequency
Tolerance onfrequency
PowerconsumptionL35L50
Lockedrotor current(LRA)
Operatingcurrent(OA)
CondenserFan
Powerconsumption
Operatingcurrent
EvaporatorFan
Powerconsumption
Operatingcurrent
* 50°C at 60 Hz
** measured at 2m distance from the unit rear side (condenser side), free field, external temp. higher than 40°C
*** measured at 2m distance from the unit front side (evaporator side), free field, external temp. higher than 40°C
W
W
m³/h
m³/h
kg
°C
°C
dB(A)
dB(A)
%
kg
mm
V
ph
Hz
W
A
A
W
A
W
A
CVC 28 0 01yy
2700
2300
R134a
1/Ø250radial
1150
1/Ø220radial
650
1
-20/+50
+25/+45
75
73
100
81
1310/509/353
CVC 41 0 01yy
3900
2900
R134a
1/Ø250radial
1150
1/Ø250radial
1150
1.05
-20/+50
+25/+45
75
75
100
86
1310/509/353
42
400
±10%
3+N
50
±2%
1450
16
3
152
0.69
90
0.4
42
400
±10%
3+N
50
±2%
1770
18
3.5
152
0.69
152
0.69
20
230
±10%
1
50-60
±2%
1450
35
7.5
152
0.69
90
0.4
20
230
±10%
1
50-60
±2%
1770
46.5
8.3
152
0.69
152
0.69

E/1203/30A/8
Capacity diagram CVC 07 001 yy (at 50 Hz)
Cooling capacity [W]
Outsidetemperature [°C]
Inside
temp.
[°C]

E/1203/30A/9
Capacity diagram CVC 14 001 yy (at 50 Hz)
Cooling capacity [W]
Outsidetemperature [°C]
Inside
temperature
[°C]

E/1203/30A/10
Capacity diagram CVC 20 001 yy (at 50 Hz)
Cooling capacity [W]
Outsidetemperature [°C]
Inside
temp.
[°C]

E/1203/30A/11
Capacity diagram CVC 28 001 yy (at 50 Hz)
Cooling capacity [W]
Outsidetemperature [°C]
Inside
temperature
[°C]

E/1203/30A/12
Capacity diagram CVC 41 001 yy (at 50 Hz)
Cooling capacity [W]
Outsidetemperature [°C]
Inside
temp.
[°C]

E/1203/30A/13
B
A
C
Dimensions
Type
CVC 07
CVC 14-20
CVC 28-41
A
774
1060
1310
B
308
406
509
C
221
233
353

E/1203/30A/14
1. Unpacking and Inspection
STULZ products are shipped ex-works. All units have been individually inspected in all
their parts and carefully packaged.
Immediately inspect the unit upon receipt, making sure it has been shipped in its proper
position. Note improper shipment on the shipping document.
We recommend you accepting merchandise subject to inspection.
Check for damage and, if any, note this immediately on the shipping document. Remove
packingand check that theexterior casingis notscratched, markedor havesigns ofblows
andthatnocomponentsaremissingandthatthere are no traces of oil. Before throwing the
packaging away check that it does not contain documents or parts of the machine.
Any damage that is encountered must be notified to the carrier by registered letter within 8
daysof receipt.Thecarrier is responsibleforanydamagecaused during shipment.STULZ
is not responsible for damage caused to the merchandise by the shipper but will do all in
its power to assist customers in these situations.
N.B.This product may not be returned without prior written approval by STULZ.
For any assistance please contact your local STULZ partner.
NOTE:If installation of the product is not required immediately or the product needs
to be onforwarded to its final destination, replace it in its packing, after inspecting it,
and store it in a safe place.
UP
UP
UP
WARNING! As an environmental concern, we recommend to recycle the
packing cartons and to separate them from any plastic.

E/1203/30A/15
This unit can be correctly identified by the
technical name-plate containing all the
information for its correct use.
In addition to the manufacturer's identification
data and the product trade-marks, the name-
plate contains the following information:
The technical name-plate is embossed on a
plastic support which ensures high endurance
of the text even in particularly difficult
environments.
N.B. For any assistance or information
concerning the unit described in this manual,
knowledge of its serial number is essential.
2. Unit Identification
Constructor Trademark
Model
Series
Date
Nominal voltage
Controlvoltage
Phase
Frequency
Start/Runcurrent
Cooling capacity
Powerabsorbed
Automatic circuit breaker curve type C, Safety
fuse type aM
Insidetemperature
Outsidetemperature
Refrigerantcharge
Type of refrigerant
Maximum pressure
Cabinet side protection IP
Ambient side protection IP
Weight
DutyCycle
This identifies the product family.
Product identification number.
Date on which the product is placed
on the market and date of
commencement of warranty.
Voltage to be supplied to the unit
Working voltage of the auxiliary
circuits if different from the voltage
rating.
Voltage phase
Voltage frequency.
Current absorbed when starting the compressor. /
Current absorbed during operation at the permitted
maximum temperature
Unit cooling capacity with 35°C inside cabinet
temperature and 35°C ambient temperature conditions.
Power absorbed by the unit with 35°C inside cabinet
temperature and 50°C ambient temperature conditions.
Rating of the automatic switch/safety fuse to be installed
by the installer.
Minimum and maximum cabinet temperature where the
machine works and for which the machine was
designed.
Minimum and maximum ambient temperature where
the machine works and for which the machine was
designed
Quantity of refrigerant contained in the unit's
refrigeration circuit
Brand name of the refrigerant used in the unit's cooling
circuit
Maximum pressure at which the refrigeration circuit
functions
protection level in the direction of the cabinet
protection level in the direction of the ambient
Empty weight of the machine
Operational capacity of the unit

E/1203/30A/16



Condenser
Condenserfan Evaporatorfan
Regulating
thermostat
Evaporator
HP switch
Compressor
Capillarypipe
3. Operating Principle
STULZ conditioners are designed to cool electric cabinets with IP54 protection level and
they are suitable for the operation in industrial environments.Their use allows to eliminate
problems caused by high temperatures, dirt and humidity which are present in the
environment.
The unit, which is basically made up of a sealed cooling circuit where the refrigerant
circulates, is divided into two sections, hermetically separated from each other, where the
air in the environment and the air in the cabinet are treated without coming into contact
with each other.
The system operates as follows:
The compressor compresses the refrigerant gas bringing it to a high pressure and
temperature.
The hot gas, by going through the condenser, is cooled and liquefied thus releasing heat
to the air in the environment. Pushed through the capillary pipe, the liquid refrigerant loses
pressure, which makes it prone to evaporation.This takes place in the evaporator, where
therefrigerantabsorbstheheatof the warm air from the cabinet, which is therefore cooled.
LP switch
Filterdryer
Condenserpressure
switch(proportionalcontrol)

E/1203/30A/17
Air flow inside the unit
Evaporator
Compressor
Evaporatorfan
Condenserfan
Condenser
EXTERNAL SIDEINTERNALSIDE
NOTE: The evaporator air flow of Mini-Air CVC07 is different from the illustrated air flow. The
evaporator air intake is from the top of the unit instead of as for the other units from the
front. Therefore, during installation, the necessary space for a proper room air intake at
the unit's top has to be left free.

E/1203/30A/18
4. Precautions
The CVC series cooling units are designed to operate as a wall-type unit and in an upright
position. For all models the compressor is and must always be in an upright position.The
cooling units may not be used or transported in a position other than that for which they
have been designed.
WARNING!
Never run the machine if you have discovered leakage of the coolant fluid.
If traces of oil are present on the unit, which point to a loss of coolant, on the inside or the
outside, then the equipment must be thoroughly checked before starting the unit and, if
necessary, the technical department of your local STULZ partner should be contacted.
5. Safety Considerations
Theinstallationandhandlingofcoolingunitsmaybehazardousastheyformapressurised
system with electric components.
Only skilled personnel may repair, inspect or maintain the cooling units.
All other operations must be performed by personnel who are experienced and qualified in
the maintenance of cooling systems.
Before servicing this unit, refer to the instructions contained in this manual, check the data
on the data plate and follow any other precaution to ensure optimum safety.
WARNING!
Never work on the unit without having disconnected the power supply
before !

E/1203/30A/19
7. Installation
1Unpack the unit taking care not to damage its exposed parts.Before discarding it,
check the packaging for any parts or documents. Check that the supply voltage is as
designated.
2Check that:
- there is space enough for an easy application and installation, both inside and
outside the cabinet;
- the cabinet is at least of the IP54 type;
- the cabinet is clean on the inside;
- the cabinet is not in the proximity of heat sources or warm air flows;
- the inside of the cabinet allows a proper air circulation, preventing any recirculation.
It is important to prevent hot air expelled by the condenser fan from being even partially
sucked back in. This would cause continuous stoppages, commanded by the pressure
switches,reducingefficiencyandincreasing electricity consumption. Improper operation
of this type can quickly cause irreparable harm to the compressor.
- units have to be fixed at the cabinet wall or at the cabinet door, which can support their
weight
6. Precautions when handling the Unit
To move this unit, when it is still packaged, use
a fork lift or a system using cables or chains.
When the packing is removed, use two M6
eyebolts,attachingthemtothe upper partofthe
cooling unit, where appropriate holes have
already been arranged.

E/1203/30A/20
Failure to comply with these requirements, in addition to affecting proper unit
operation,invalidates warranty coverage.
adhesivegasket
WARNING!
Do not obstruct circulation by air being sucked into or expelled from the air
conditioner.
3The cooling unit must be installed as high as possible;
4If installed on a door, make sure the hinges can withstand the weight of the unit;
5make sure the electric cable is not torn or damaged when the door is closed;
6Ifthedepthof the cooling unitpreventsthedoorfrombeingcompletely opened, arrange
a stopper for such a door.
7Prior to servicing the cabinet, disconnect power supply to the same.
Prior to drilling holes or making cuts on the cabinet, make sure that holes, screws,
cables,etc.donotinterferewiththeequipmentwhichhasalreadybeeninstalled.Make
cuts on the cabinet panels by following the relevant template.
8Once the anchoring holes have been drilled in the cabinet wall, mount the eyebolts to
handle the unit. the necessary cut-outs
corresponding to the unit size can be seen on
the following pages.
9Glue the adhesive gasket around the edges of
the holes drilled on the cabinet;
10 Position the cooling unit at the cabinet and
secure it with the appropriate screws.
NOTE:
Mini-Air units are already provided with threaded
inserts, in correspondance with the fixing holes at the
cut-out.
Therefore the fixing holes at the cabinet wall must not
be provided with threaded inserts.
NOTE:
Mini-Air units are provided with a 3m power supply
cable.Therefore leave a minimum distance of 200 mm
from the top of the unit to the shelter ceiling during
installation.
threaded inserts
threaded inserts