Viessmann EVO-COOL Series User manual

Ensure compliance with the following instructions prior to beginning work on the Refrigeration unit:
Refrigeration units EVO-COOL®
Installation and
operating Instructions
6008309-01 GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
GB
We reserve the right to make technical changes! Status as of 02.15Page 1
Installation, cleaning maintenance and repair work must be
performed only by a refrigeration specialist company.
Technical modications and manipulation are prohibited.
Non-compliance will result in forfeiture of all warranty claims.
Work on the Refrigeration unit is authorised only when the mains
plug has been removed. The Refrigeration unit must be protec-
ted against unauthorized activation by appropriate means
(e.s. warning sign). The directives, VDE 0105 Part 1, for working
on electrical equipment must be complied with.

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 38 GB
Table of contents
1. Description
1.1 Refrigeration unit
1.2 Deep-freeze unit
2. General information
2.1 Excepts from our warranty conditions
2.2 Standards and regulations
2.3 Requirements for the installation room
2.4 Transport
2.5 Delivery condition
2.6 Unpacking and handling
2.7 Energy conservation
2.8 Decommissioning
3. Cleaning and maintenance of the
refrigeration unit
3.1 Disposal of cooling agent
4. Installation of a EVO-COOL® in a
Viessmann coldroom
5. Electrical power supply cold room
5.1 Connection of the door contact switch
5.2 Connection of the fault indicator contact
5.3 Power supply connection and commissioning
6. Defrosting
6.1 Defrosting process
6.2 Defrosting options
6.3 Defrost water drain
6.4 Preventing excessive defrost water
7. Cooling mode
7.1 How the cooling mode works
7.2 Description of the cooling mode types
8. First steps EVO-COOL®
9. Operation of the regulation
9.1 Menu Enabling
9.2 Display
9.3 Menu Settings
9.4 Menu Information
9.5 Menu LogBook
9.6 Menu Program
9.7 Menu Change Board
9.8 Menu Data Exchange
9.9 Menu Warnings
10. Bus operation
10.1 Connection of the units and the display
10.2 Bus operation modes
10.3 Bus operation faults
10.4 Mains connection
11. Fault rectification
11.1 Refrigeration unit is not running
11.2 Refrigeration unit is running, but the display is not
working
11.3 Thermal detector defective.
• RF–breakage / short circuit
• Liquefaction detector not working correctly
• Log. detector not working correctly
11.4 Fault with the package detector
11.5 High pressure
11.6 Cold room temperature too high
11.7 Cold room temperature too low
11.8 Refrigeration unit constantly runs and the
evaporator is icy
11.9 Door open
12. Refrigeration circulation schematic
13. Electrical circuit diagram for 230V / 1~ / 50Hz
14. Electrical circuit diagram for 400V / 3~ / 50Hz
15. Technical data
16. Explanation of Conformance CE

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 39 GB
1. Description
The units are designed for the prescribed temperature
anges. If they are operated outside the prescribed tempe-
rature range for several days, the possibility of a serious
defect on the refrigerating unit cannot be discounted.
1.1 Refrigeration unit
EVO-COOL® CS 500, CS 900, CS 1300, CS 1500, CS 2000,
CS 2500, CS 3000
The units are designed for the cooling of rooms, in which
goods are stored at temperatures of -5°C to +20°C.
1.2 Deep-freezing unit
EVO-COOL® FS 900, FS 1200, FS 1400, FS 2000, FS 2500,
FS 3000
The units are designed for the cooling of rooms, in which
goods are stored at temperatures of -25°C to -5°C.
2. General information
2.1 Excepts from our warranty conditions
The warranty is valid for 1 year. The period of entitlement
begins on the day of delivery, which must be veried
by the Bill of delivery or Invoice. Within the period of
warranty, functional defects attributed to faulty design or
material defect will be rectied at no charge.
Claims in excess of these, in particular those related to
consequential damage, are excluded.
We will accept no liability for damages, which result from
improper or unauthorised utilisation, faulty installation or
commissioning on the part of the customer or a third-
party, natural wear and tear, faulty or negligent handling,
chemical, electro-chemical or electrical inuences, as
long as the fault cannot be attributed back to actions
taken on our part, non- compliance with Installation,
Operating and Maintenance Instructions, improper mo-
dications or repair work on the part of the customer or a
third-party, as well as the inuence of replacement parts
from thirdparty origin.
Warranty entitlement is forfeited, as well, if the refrigera-
tion circuit has been opened by unauthorised personnel,
access has been made to the system assembly, or the se-
rial number has been changed or made unrecognisable.
2.2 Standards and regulations
The EVO-COOL® refrigeration unit has been built and in-
spected according to the standards and regulations valid
at the time of manufacture.
It complies with the
EMC Directive 2004/108/EC,
machinery directive 2006/42/EG.
The unit has been inspected at the factory for refrigerati-
on circulation leakage and for function.
2.3 Requirements for installation area / Intended use
The Refrigeration unit must not be assembled outdoors.
The Refrigeration unit must be setup to ensure the free
intake and discharge of air. In the event the use of air
ducts is unavoidable, project planning must be made by
a refrigeration specialist company.
Sucient free space must be provided for in front of the
Refrigeration unit intake and discharge openings in order
to warrant a good air ow:
- minimum 250 mm in front of all intake and exhaust
openings
If it is not possible to maintain this clearance, then suf-
cient air ow must be warranted by means of suitable
measures (air deector, air ducts, additional ventilators).
The unit must not be deployed in areas where strong
strong magnetic interfering impulses are anticipated or
in the vicinity of transmitting antennas.
The unit must not be setup in an explosive atmosphere!
The unit must not be setup in a re-endangered opera-
ting site!
According to DIN VDE 0100-482 (VDE 0100 Part 482), this
is: 1997-08
Rooms or locations in rooms or in the open, in which, with
respect to the local and operational circumstances, the
danger exists that highly inammable materials could come
so close to the electrical equipment at such hazardous levels
that the higher temperatures of this electrical equipment or
electric arcing create a re hazard.
This includes: Working, dry and storage rooms or sections
of rooms, as well as similar outside locations, such as paper,
textile and wood processing operations, hay, straw, jute or
ax storage yards.
- According to BGR 500, chapter 2.35 or local regulations
for operation and maintenance. (qualified staff)

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 40 GB
2.4 Transport
The Refrigeration unit must be transported in its opera-
ting position due to oil in the compressor. For possible
further transport, only the original packaging may be
used.
2.5 Delivery condition
The refrigeration unit is delivered in a carton, operatio-
nally ready and wired for immediate plug-in.
2.6 Unpacking and handling
- Prior to and during the unpacking of the Refrigeration
unit, a visual inspection should be made in to de
termine whether possible damage has occurred during
transport.
- Please pay attention to loose parts, dents, scratches
visible oil loss, etc.
- Before disposing of the packing material, a check of it
should be made to ensure that no loose parts are
hidden in it.
- In order to process warranty claims, please provide an
exact description of the deciency (with picture if
possible), as well as information as to unit model
designation and serial number.
- In order to protect the unit from damage, it must only
be transported in its operating position. It must be
ensured that the evaporator and condenser units have
not been damaged. Non-compliance will result in
forfeiture of the warranty entitlement.
2.7 Energy conservation
Direct sunlight will raise the consumption of electricity.
Avoid any unnecessary or too lengthy opening of the
door.
Monitor the storage temperature.
Regularly clean the Refrigeration unit. A clean unit saves
energy and has a longer service life. Observe cleaning
intervals (see Chapter “Cleaning and maintenance of the
Refrigeration unit”). Regular maintenance increases the
service life.
2.8 Decommissioning
Temporary decommissioning
The refrigeration unit is decommissioned as follows:
- Turn the knob to Standby mode then press to conrm.
- Select Standby Ye s.
A signal sounds as a warning (approx. ve seconds) while
the system switches to the selected mode.
Check whether Standby mode is displayed on the
system:
- The current setting is displayed in the small window on
the side.
- If Ye s is displayed, the system does not start up.
The current statuses of the components can be viewed in
the Information menu.
Longer-term decommissioning
The refrigeration unit is decommissioned as follows:
- Turn the knob to Standby mode then press to confirm.
- Select Standby Yes.
- If Ye s is displayed, the system does not start up.
- Disconnect the refrigeration unit’s mains plug to dis-
connect the refrigeration unit from the mains.

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 41 GB
3. Cleaning and maintenance of the Refrigeration unit
Attention!
The mains plug must be removed from the socket and
protected against re-insertion for all cleaning and
maintenance work.
Following commissioning, the Refrigeration unit should
bechecked periodically and cleaned as necessary. The
time span between the checks or cleaning should be
established based on the level of contamination.
The time interval for cleaning is dependent on on the am-
bient conditions. Yet, at least one maintenance inspection
should be performed annually.
The evaporator unit should be cleaned, either with a soft
cleaning brush, with compressed air or, in case of with
heavy grease deposits, with an industrial cleaner. Do not
use any sharp or sharp edged object for cleaning. It must
also be ensured that the thin lamella ns are not bent or
damaged during the cleaning process.
Do not spray the unit with water or steam!
3.1 Disposal of cooling agent
If the Refrigeration unit must be replaced with a new
unit, ensure that the Refrigeration unit pipelines are not
damaged to the point that the cooling agent leaks out.
Defective Refrigeration units or extracted cooling agent
must be disposed of in a manner compatible to the envi-
ronment and in accordance with applicable regulations.

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 42 GB
4. Installation of a EVO-COOL® in a Viessmann coldroom
Sufficient free space must be provided for the intake and
discharge openings on the left side of the refrigeration
unit in order to warrant a good air flow:
- at least 250 mm from all ventilation openings.
A wall element can be delivered by us with the respec-
tive cut-outs and bore holes for installation in the cold
storage cell.
Otherwise, the required bores holes and cut-outs
should be made on location by a refrigeration techni-
cian using installation templates or the dimensional
drawings.
The cutting edges and bore holes must be protected
against corrosion with zinc primer paint.
Attention!
The electrical power supply should first be connected
at commissioning after installation has been com-
pleted - Risk of life!
Loosen the holding angle from the unit.
To prevent ice formation and not restrict access for
servicing, should be maintained between the
coldroom wall and the evaporator, a minimum
distance of 50 or 100 mm.
Installation template
> 50 mm
> 100 mm

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 43 GB
Hang the unit on the storage cell wall while pushing
against it from the outside.
Slide the holding angle against the inside cell wall and
tighten it securely with one or two bolts.
Loosen the locking screws (2 ea.) on the front access
cover.
Pull the front panel at the bottom a little bit forward
then push it upwards and take it off by pulling it forward
again. Units without a
display have two
additional screws on
the front cover

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 44 GB
Slide the enclosed plastic collar (D) over the defrost
water drain hose (B).
Guide the defrost water drain heater (A) completely
through the defrost water drain hose (B), and in this pro-
cess, for easier insertion, the defrost water drain hose (B)
must be pulled as much in a straight line as possible.
Guide the defrost water drain hose (B) through the bore
hole (G, ø 31 mm) in the cell wall (F) from the inside.
Lubricant can be used if necessary.
Connect the defrost water drain hose (B) to the drain
port (E) on the evaporator condensate tray.
Put the defrost water drain heater (A) into the siphon (C).
Push the siphon (C) from the inside onto the defrost wa-
ter drain. Guide the defrost water drain into the defrost
water tray.
Cover the cut-out (G) for the defrost water drain hose (B)
with the plastic collar (D).

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 45 GB
Push the enclosed defrost water tray with the side clips (P) in
the lower guide up to the end of the evaporator line to the
back. Then push the tray upwards and ca. 10 mm to the back,
again.
The defrost water tray is correctly positioned if the side clips (P)
on the defrost water tray are positioned on the metal clips (Q).
Fill out the area above the Refrigeration unit hanging rail with
the enclosed Armaflex hoses (N) as sealing material.
* Seal the rail with sealant if necessary.
Remount the front access cover, securing it to the unit with the
enclosed sheet-metal screws.
Attention!
If cable ducts or the like are to be installed next to the
Refrigeration unit, a space of 30mm must be maintained
between the cable duct and the unit to ensure that the unit
sidewall can be removed for maintenance work.
*
*
P

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 46 GB
5. Electrical power supply cold room
A 4-pole socket outlet is located on the intake-side of the Refri-
geration evaporator unit for the electrical power supply to the
loads attached to the coldroom, with a total power capacity of
max. 250 VA (lighting, door frame heating).
The door contact switch can also be connected to this sokket
outlet.
5.1 Connecting the door contact switch
The evaporator ventilator should be switched off when the
cold storage cell is opened. For this reason, we recommend
the installation of an potential-free door contact switch (swit-
ching capacity 230VAC, min. 0.5 A).
Connection takes place via the 4-pole socket outlet mounted
on the intake-side of the evaporator unit.
In its delivered condition, the unit is functionally ready for
service without an external door contact switch.
The door contact switch is not included within the scope of
delivery of the unit.
If a door contact switch is connected to the refrigeration unit,
the regulation parameter must be changed (see also Point 9.3,
Menu Settings).
This is achieved through the following menu items:
Settings
Limiting values/Alarm
Door contact
Yes/No
5.2 Connection of the fault indicator contact
The electronic control unit is outfitted with a potentialfree
Fault report contact for connection to the on-site Fault repor-
ting equipment (max. 10A, 230VAC). The mains side electrical
power outage is not monitored.
In the event of a fault, contacts IN and NO are closed.
The connection is located on the circuit board (plug connector
X4).
IN NCNO
11
1214
X4
Mains connection 230V AC
via multi-pin connector
Door contact
switch
(optional)

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 47 GB
5.3 Power supply connection and commissioning
Attention!
The electrical power supply should first be connected at
commissioning - Risk of life!
Work on the power supply connector and protection devices
must be carried out by a specialist company, in accordance
with IEC 364, local regulations and the connection conditions
of the respective energy supply company!
Insert the mains plug into a properly grounded outlet with
personal protection measures (fault current circuit breaker)
according to the specification plate.
Electronic regulation
The equipment starts up after self testing the regulation.
A warning signal sounds upon ramping up the regulation.
Unless other selection is made during ramp-up, the regulation
continues with the status which was set before discontinu-
ation of the power supply. I. e. if regulation was in a cooling
mode, it continues in the same mode. If it was in standby, it
will remain in that mode.

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 48 GB
6. Defrosting
6.1 Defrosting process
When the defrost function activates, the compressor and the
fan are switched off and the heater for the defrost water hose
is switched on.
Once the defrost water hose lead time has passed, the com-
pressor switches on and the bypass valve opens. The heater for
the defrost water hose continues running during this process.
The compressor remains running until the set defrost tempera-
ture is reached in the evaporator unit or the set maximum de-
frost period has passed. The maximum defrost period should
usually be set as a longer period rather than shorter one so
that defrosting occurs in full. The correct position and thermal
contact of the sensor in the evaporator unit must be checked
during maintenance (see figure).
The sensor is inserted diagonally downwards from the left
between the 9th and 10th fins and the 1st and 2nd sensor tube
at a depth of 34 mm.
If the sensor is positioned against a tube that is close to the
inflow during the defrosting process, defrosting does not
complete fully. The sensor reaches the set defrost temperature
prematurely and the control unit terminates the defrosting
process. The ice is simply melted and sinks to the bottom. This
results in a block of ice on the lower edge of the evaporator,
which can only be manually defrosted by a service engineer.
If the maximum defrosting period has passed or the defrost
temperature has been reached, the compressor switches off
and the bypass valve closes. The defrost water hose heater
continues running until the dripping time has passed. The
defrosting process is now complete.
Caution!
When using hot gas defrosting, the process should best be
conducted quickly and often. Large ice formations cannot
be melted as the defrosting process works with far lower
temperatures and therefore less radiant heat.
Insert sensor
between the
9th and 10th fin
Insert sensor between
the 1st and 2nd
evaporator tube
34mm
Insert the sensor
to a depth of 34 mm
Lead time
(min) Dripping time
(min)
Defrosting
duration (min)
Defrosting temp.
(°C)
Compressor
Solenoid valve
Bypass
Defrost
water hose
heater
Relay
Time

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 49 GB
6.2 Defrosting options
Defrosting cycle
The defrosting process is continually triggered at set
intervals.
Defrosting plan
Defrosting is performed for well-defined periods. These
can include 99 periods will be specified in a week time.
Manual defrosting
The cooling process is interrupted and a complete de-
frosting process is conducted. The unit then re-activates
the cooling mode.
6.3 Defrost water drain
The defrost water created is caught in the defrost water
tray and largely evaporated by the evaporator loops.
In the event of large volumes of defrost water or high
humidity around the cell installation site, the use of
the evaporator may not be sufficient. In such cases, an
additional defrost water drain hose can also be attached
to the evaporator tray. The accessories kit is optionally
available and is compatible with all FS and CS series
units.
6.4 Preventing excessive defrost water
Defrost water is the melted ice formed by the evapora-
tor. In other words, the ice was formed through a use of
energy and likewise melted again. Due to the thermody-
namically induced lack of humidity at the coldest point
in the coldroom, ice formation cannot be prevented
(vapour pressure drop) but can be minimised.
The following points should be noted:
- Units in deep-freezing rooms should always be coupled
with a door contact switch that switches off the evapo-
rator while the door is open.
- Doors should remain open for as little time as possible.
If this is not possible, suitable measures must be taken
to minimise the loss of cold. This can include several
technical measures such as strip curtains, fast-sliding
doors, air curtain systems, pre-cooling rooms etc.
- The air flow should not be directed at the doors and
pressure compensation valves. Pressure compensation
valves must always be installed in a position where
they are barely influenced by the air flow.
- The goods introduced must be stored in sealed contai-
ners. Goods with high water content are subjected to
dehydration and thus damage. (Freezer burn on deep-
frozen goods and shrivelling/drying out of fresh foods)
- Do not leave deep-frozen goods in the warm storage
area on delivery. Defrost water will form on the surface
and have to be cooled again. In the case of cardboard
packaging, a great deal of moisture is absorbed in the
surfaces and causes the evaporator to freeze over when
the packaging is moved into the coldroom.

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 50 GB
7. Cooling mode
7.1 How the cooling mode works
After switching on the unit (Standby => No; see Point 8
‘First steps’), the cooling mode activates. If the unit was
only recently connected to the mains, the compressor
standstill time (usually three minutes) passes. The com-
pressor then switches on and starts the cooling process.
The condenser fan switches on at an appropriate speed
depending on the temperature at the condenser outlet.
On reaching the ‘Start evaporator fan’ temperature or
upon expiry of the ‘evaporator fan delay’, the evaporator
fan switches on. Depending on the humidity setting, the
fan runs at all times or when the compressor is switched
on (see parameter list in Point 9.3). The compressor runs
until the switch-off point is reached and re-activates
when the temperature increases to the switch-on point.
The points are determined by the desired coldroom
temperature and the hysteresis (see parameter list in
Point 9.3).
7.2 Description of the cooling mode types
Normal mode
The unit is started with ‘Standby = No’ then runs conti-
nuously. The cooling mode is only briefly interrupted by
the set defrost cycles.
Cooling schedule
The unit is started with ‘Standby = No’ then only runs at
the times approved in the cooling schedule. The cooling
mode is only briefly interrupted by the set defrost cycles.
The cooling schedule must always be programmed for a
week.
Emergency mode
The emergency switch on the unit’s motherboard
(see circuit diagram) has been activated. The unit runs
without interruption and temperature regulation. The
compressor and both fans run at maximum power. The
information ‘Emergency mode’ appears on the display.
Relay
Compressor
Solenoid
valve
Bypass
Solenoid
valve
Fluid line
Temperature
monitoring by
ambient air sensor
Minimum
standstill time
Compressor must
have nished
Lead time
Bypass valve (sec)
Cooling running
Switch-o by
ambient air sensor
Time
Cooling range
Temperature
Hysteresis
(2 to 8 K)
Target
temperature
Compressor
on Compressor o
Time
Compressor
on
Temperature
Target
temperature
Hysteresis
(-2 to 8 K)
Compressor
on Compressor o
Time
Compressor
on
Deep-freeze range

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 51 GB
8. First steps EVO-COOL®
1. Check the intactness of the refrigeration unit. If the EVO-COOL® is in
order, it can be connected to the network according to the
specication plate.
The control unit comprises the functional units of a display, a rotary
knob, a push button, the USB interface (concealed behind the cover
over the display) and the mains connection.
The USB interface can be used to store the data or load programme
updates into the control unit (see Point 9.8).
2. The display starts to light up for 30 seconds
“Please wait / Bitte warten”appears in the display.
3. The equipment starts up in the status in which it was operated
before separation from the power supply. In the display, Equipment
starts up appears and oers Start and Standby for selection. If the
equipment does not start up, turn the rotary knob to Standby (with
light background) and then press the selector switch. While the
equipment switches to this mode, a signal tone is heard (ca. 5
seconds) as warning.
4. The rotary knob has the following function:
- Turning = Selection
- Pushing = Selection of the function
If the button is pushed for a longer period of time, the menu
selection goes back to the top level.
5. With the rotary knob, select Enabling and input the numerical
sequence 12345. After correct input, Welcome appears in the
display. By pushing the rotary knob further, the control goes
to the main menu, again. If the numerical sequence is not
correct (Login Error), please contact your refrigeration specialists.
The relevant person with the higher user privileges can modify the
access parameters for the level below.
6. The next step is temperature setting. For that, the Program menu
must be selected. This includes the submenu items Temperature ,
Standby , Time Schedule , back .
Select the Item Temperature and set this to the corresponding
value. Acceptance is performed by pushing the rotary knob.
7. Check if the equipment is in a Standby mode. It is sucient to scroll
to the item and the little window on the side displays the
instantaneously adjusted value. If the display shows Yes, the
equipment will not start up. If the equipment should cool down,
select Standby , then No and conrm this by pushing the rotary
knob. If the compressor has been running previously, the standing
time compressor SZV starts. 3 minutes are set as a default value.
8. Under the menu item Information , you can query the current
status of the components. Apart from short specication on the
side, the lower edge of the display shows the long specication in
addition. In the case of equipment parts with a switch-on function,
0 appears for O and / for On.

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 52 GB
Change Board
Data Exchange
Enabling
Information LogBook
Program
Warnings
Settings
9. Operation of the regulation
9.1 Menu Enabling
A 5-digit code can be used for log in. The unit must be released for all operation, including Standby
mode or temperature changes. This provides protection against accidental changes.
In the original state, the passwords for
the user 12345
the service 90210
If the access rights are to be modied or for specic users they are inaccessible, the
passwords need to be modied. When losing the passwords, their modication may only be
performed by Viessman Kühlsysteme GmbH!
9.2 Display
Sub-menu and parameters Selection window main menu
Main menu
Parameter value
Room temperature
Bus number of the
currently active
aggregate (1-8)

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 53 GB
Submenu 1 Submenu 2 Values Presetting Description
CS Cooler FS Freezer
Language German After changing the language setting, the unit must be
restarted. Up to 8 dierent languages can be stored. The
standard languages are German, English and French. In
order to activate the changeover to another language,
the language must be selected and then, the equipment
disconnected from the power supply for a short time. Upon
restarting, the new language is activated.
English
French
Turkish
Russian
Polish
Name refri-
geration unit Board1 Board1
A name can be assigned for each refrigeration unit. In the
case of bus operation, inputting the name for the assign-
ment of rooms is helpful. In addition to the name, the unit
number has to be input at the DIP switch, as well. Since
up to 8 dierent refrigeration units can be controlled with
one display, a logical structure of the name specications
is denitely required. (See Electrical circuit diagram, Page
66 to 69)
Operating
parameters
Humidity High/Low High Low
The evaporator fan runs together with the compressor.
=> Low relative humidity.
The evaporator fan runs constantly.
=> High relative humidity.
Hysteresis
-8K to -1K
and
1K to 8K
+2K -2K
Dierntial can be changed between switch-on and switch-
o temperature. If the value is negative, the refrigeration
unit switches o if the cold room temperature has reached
the rated temperature value minus the absolute value of
the dierntial. It turns on if the cold room temperature has
reached the rated temperature again.
Example: Rated temperature - 20°C
Dierntial -2K
Refrigeration unit O at -22°C
Refrigeration unit On at -20°C
If the value is positive, the unit turns o if the cold room
temperature has reached the rated temperature value.
It turns on if the cold room temperature has reached the
rated temperature + dierntial.
Example: Rated temperature +5°C
Dierntial +2K
Refrigeration unit O at +5°C
Refrigeration unit On at +7°C
Bus type Redundancy/
multi-cell
Redun-
dancy Redundancy
If the units are used in bus mode, a separate unit number must
be set for each unit (see circuit diagram on pages 66-69)!
Redundancy = all units run with the same setting and tem-
perature. Defrosting and cooling occur simultaneously on all
units. Redundancy in this context means that if one unit fails,
the second or remaining units continue to function. The units
do not monitor each other.
Multi-cell = all units are controlled via a display. To facilitate
allocation, each room and the applicable unit should be given
its own name.
To switch to a different bus mode, the unit must be disconnec-
ted from the mains. On restarting the unit, the new bus mode
is activated.
9.3 Menu Settings

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 54 GB
Submenu 1 Submenu 2 Values Presetting Description
CS Cooler FS Freezer
Type
Wall-han-
ging
unit
Ceiling-
mounted
unit
Wall-
hanging
unit
Wall-hanging
unit
Wall-hanging unit: in the case of redundancy, all units in the bus
system simultaneously begin defrosting.
Ceiling unit: units begin defrosting separately.
Restart required on selection.
Logging
Intervall
(optional)
1 min to
30 min 15 min 15 min
Time interval for the data logger. In the case of 15 min
recording interval, the ring buer lasts for min. 2 years. The
data can be read out to an USB stick as well as viewed and
processed in Microsoft® Excel or OpenOffice™. In the graphic
representation in the display, the time course is shown on a
daily basis and can be selected in a targeted fashion within a
specic day.
Defrosting Man.
defrosting Yes / No No No Time limitation for defrosting in a cycle.
Defrosting
Defrost
cycle /
Defrost
plan
Defrost
cycle Defrost cycle
Selection parameters for the defrost function
Defrost cycle: At a predetermined interval of the defrosting
operation is started.
Defrost plan: By setting the shift points for the defrost de-
frosting can be performed for well-defined periods.
Defrosting must be programmed for a week. For 99 swit-
ching points are available. When changing the defrost to
restart the system is required.
Defrosting
duration
1 min to
60 min 10 min 10 min Time limitation for defrosting in a cycle.
Defrosting
cycle
15 min to
24 h 4 h 2,5 h
Defrosting cycle: the defrosting process starts at a specified
interval.
Example:
Every 2h defrosting cycle for a duration of 30 minutes
=> at 2:00 pm, defrosting is performed for 30 minutes,
at 4:00 pm, defrosting is performed for 30 minutes,
at 6:00 pm, defrosting is performed for 30 minutes.
For limitation on defrosting, the defrosting limitation
temperature is also applied. Thus, defrosting is performed
for a maximum period of 30 minutes or until the defrosting
limitation temperature is reached. It is better to defrost the
units quickly and often than to have a long cycle period and
a long defrosting process.
Defrosting
temperature 0 to +40°C +12°C +12°C
The defrosting limitation temperature is measured in the
evaporator. For switching o, the defrosting duration (time
in min) or the temperature is used. Whichever value is
reached sooner.
If no defrost termination probe is available, only the time
is considered and the process is nished after running the
defrosting sequence.
Switching
point
+3°C to
+40°C +5°C +5°C
Switchover between hot gas and fan-only defrosting.
The temperature species up to which temperature the
defrosting is only performed with the evaporator fan. Under
this temperature, defrosting is performed by the use of hot
gas or electric heating, respectively. Above this temperature,
the ice layer on the evaporator is melted away for cooling of
the room. For that purpose, the evaporator probe must not
be fully frosted. Defrosting using the fan should ideally only
occur for chiller rooms.

General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or regar-
ding a certain purpose always require a special written agreement.
GB
Right reserved to make technical changes!Page 55 GB
Submenu 1 Submenu 2 Values Presetting Description
CS Cooler FS Freezer
Drain down
time 0 min to 10 min 3 min 3 min
After the defrosting process, a
waiting time is applied until the
normal operating mode (cool-
ing) is returned. In the case of
hot gas defrosting, the compres-
sor downtime runs concurrently.
I. e. the cooling operation can
only start after elapsing of this
time.
Drain line
heater acti-
vation pre
defrost
Drain pre heat
0 minto 10 min 3 min 3 min
Lead time for the drain line.
Starts prior to the start of the
defrosting process. Thus, the
defrosting water does not drip
on the cold dripping tray and in
the cold drain hose.
Freezing
temperature Yes / No Yes Yes
Displays the temperature before
defrosting began in the data
logger during defrosting and
prevents temperature peaks
during defrosting.
Back
Fan
Fan type Standard
Eco-Linear
– Activation of the fan with 230
V and the control output 0-10
V linear.
– Activation with a straight line
through the defined points
temperature 5 / speed 5 (lower
point) and temperature 1 /
speed 1 (upper point).
Pr. Evap. 0 min to 10 min 3 3
Delays the start-up of the evapo-
rator fan together with the start
temperature of the evaporator
fan.
Sub. Evap. 0 min to 10 min 0 0 Uses the residual cold from the
evaporator.
Start Evap. -20°C to 10°C +5°C -15°C
Delays the start of the evapo-
rator fan after defrosting or a
restart together with the delay
time.
Temp Step 1
Min. value v.
temp. intervals
of 5 to max. 50°C
+35°C +35°C Upper temperature point for
speed regulation. (See figure)
Temp Step 5 min. 0°C to max.
value v. temp 5 00 Lower temperature point for speed regulation. (See figure)
Rotary speed 1
min. value v
rotary speed 5 to
max 100%
80 80 Upper percentage for speed
regulation. (See figure)
Rotary speed 5
min. 0% to max.
value v. rotary
speed 5
00 Lower percentage for speed
regulation. (See figure)
Back
1
5
51
max. 100%
Temperature
Rotary speed

GB
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Right reserved to make technical changes!Page 56 GB
Submenu 1 Submenu 2 Values Presetting Description
CS Cooler FS Freezer
Limiting
values/
alarm
Mute time o 0 min to 99 min 60 min 60 min Duration for which a conrmed error is suppressed.
Alarm delay
time for tem-
peratur
0 min to 99 min 60 min 60 min Time interval after which the upper or lower tem-
perature alarm has been triggered.
Pr. Time door 0 min to 10 min 4 min 2 min
Duration after which the door alarm should be
triggered (only in the case of installed door contact
switch).
Door contact
(optional) Yes / No Yes / No Yes / No Determination of whether the inlet door contact switch can be evaluated.
Personal
alarm
(optional)
Yes / No Yes / No Yes / No Determination of whether the inlet personnel alarm
can be evaluated.
Filter alarm
(optional) Yes / No Yes / No Yes / No Determination of whether the inlet filter alarm can be evaluated.
High temp.
alarm 0 K to 20 K 10 K 10 K The value set added to the cut in temperature is the high alarm set point.
Low temp.
alarm 0 K to 20 K 5 K 5 K The value set added to the cut out temperature is the low alarm set point
Back
Network Attention!
The settings under this menu item require a restart!
Use DHCP Yes / No Automatic address assignment via server (DHCP)
IP-address (enter the
number) Manual input of the IP address.
Subnet mask (enter the
number) Manual input of the subnet mask.
Gateway (enter the
number) Manual input of the Gateway.
Back
Control
panel
User Pin 12345 (User)
90210 (Service)
Default entry for operator can be modified by the
service personnel.
T. authenti-
cated 1 min to 60 min 1 1 Time interval after which the user at the operating panel is logged out.
Contrast 10 to 50 20 20 Contrast of the screen
T screen sv. 5 sec to 1000 sec 60 60 Time interval after which the screen saver
is turned on.
Time lighting 5 sec to 1000 sec 90 90 Time interval after which the background lighting
turns o
Time zones Selection table Time zones for switching between summer/winter
time. Restart required on selection.