REMKO RKW 1000 INOX User manual

REMKO –powerful like a bear
REMKO RKW 1000 –9800 INOX
Stainless Steel Chiller
Edition GB –M11
Operation
Technology
Spare Parts

3
REMKO Stainless Steel Chiller
RKW 1000 INOX / 1600 INOX / 2600 INOX
3600 INOX / RKW 4500 INOX / 8000 INOX / 9800 INOX
Contents Page
Unit Description 4
Safety Hints 4
Transport and Packaging 5
Operation 5
Maintenance and Service 9
Shutting Down the Unit 10
Alarm Description 10
Troubleshooting 11
Technical Data 12
Dimensions 13
Contents Page
Assembly Instructions for Service Personnel 14
Unit Assembly 14
Storage Modules for RKW 3600 to 9800 I 17
Cable Remote Control 20
Electrical Connection 21
Hydraulic System 24
Initial Operation 25
Environment and Recycling 26
Service and Guarantee 26
Read these instructions carefully before setting up/operating the unit!
Our guarantee becomes null and void if the unit is used, set up
or maintained improperly,
or if modifications are made to the supplied unit without our prior consent.
Subject to alterations!
Operating Instructions
GAlways keep these operating instructions near or on the unit!G

4
Safety Hints
Extensive tests have been conducted on the material,
functionality and quality of these units before they were
shipped. These units may only be used in accordance
with their intended purpose. Hazards may arise if the
units are used improperly.
Please make sure to follow these safety instructions.
◊Make sure that personnel trained in the operation of
the chiller check the unit for visible defects on the op-
erating and safety mechanisms each time before
putting it into operation.
◊Before any work on the unit is performed, it must be
disconnected from the power supply and secured
against switching on!
◊The unit may only be filled up and operated with wa-
ter or a mixture of water and glycol (brine)!
◊Ensure that the air intake and outlet openings are al-
ways clear of foreign objects.
◊Do not insert any objects into the air intake and outlet
openings.
◊Do not install the unit close to heat sources.
◊Make sure to maintain the safety zones described
later in this manual!
◊Do not use flammable gases such as spray paint in
the direct vicinity of the units.
◊Make sure that the unit is kept at a safe distance
from flammable materials.
◊Do not operate the unit if the atmosphere is contami-
nated by oil, sulfur or salt.
◊If there is a cable remote control installed, make sure
to protect it against moisture and direct or indirect
sunlight!
Unit Description
REMKO chilled water air-conditioning systems consist
of an outer part ready which is ready to be connected,
the air-cooled chiller (REMKO RKW INOX) and one or
more inner units (cold water consumers: REMKO KLT,
WLT, DKT and FLG). All components required for cool-
ing are located in the outer part.
A hermetically closed cooling cycle in the chiller cools
the water (or a brine made of water and antifreeze) to
up to 5 °C via a plate heat exchanger.
A circulation pump integrated either into the unit or in
the storage module transports the cold water to the in-
ner unit(s). To expand the water volume and extend the
operating time, there is also a cold water tank with
safety assembly either in the unit or located in the sepa-
rate storage module.
In the inner units, the air in the room is guided through
the heat exchanger of the inner units by means of a
quiet fan. When the air in the room leaves the unit, it is
cooled, demoisturized and filtered. The water warms up
and transports the heat absorbed from the room back to
the outer part where it is passed along to the cooling cy-
cle and the surroundings.
The RKW 1000, 1600 and 2600 INOX chillers all have a
hydraulic system that is ready to be connected with a:
◊Buffer tank
◊Expansion vessel
◊Safety valve
◊Flow switch (differential pressure monitor)
◊Manometer
◊Ventilation
◊Ventilation valve
◊Drain valve
The RKW 3600 INOX chiller models and higher can be
easily equipped with a storage module that has an inte-
grated hydraulic system, even at a later time.
The system is regulated by means of a self-sufficient
microprocessor that monitors system safety parameters
and displays any malfunctions and monitors the set cold
water temperature. Aconnection between the chiller
and the cold water consumers is not required.
To air condition rooms, an outer part is usually used in
connection with the appropriate inner units (consumers).
Here, there are various options available depending on
how the unit is being used. In addition to standalone
units, wall and ceiling chests, ceiling cassettes with vari-
ous capacities can also be selected for mounting on in-
termediate walls.
REMKO chillers are suitable for almost every type of ap-
plication when used with the right consumers if the pri-
ority is cooling according to needs.
Thanks to modern technology, the chillers require up to
80 % less coolant than other cooling and air-
conditioning systems.
The coolant is only necessary to cool the transport me-
dium (water or brine). In conventional systems, the cool-
ant is also required to transport the heat from the inner
units (consumers) to the outer part.
This makes another advantage of the REMKO chillers
evident; they do not require coolant lines to the inner
units (cold water consumers). All connection lines are
designed to be water lines with the correct dimensions
and heat insulation.
Ideally, lines of an existing heating network can be inte-
grated into the overall system.
Proper use
The outdoor parts have been designed and fitted exclu-
sively for operation with REMKO indoor units belonging
to the RKV series.
The manufacturer assumes no liability for damage re-
sulting from non-compliance with manufacturer specifi-
cations and legal requirements, or if modifications are
made to the units.

5
Transport and Packaging
The unit is shipped in a stable transport box made of
wood and cardboard. Please examine the unit when it is
delivered
Make note of any damage or missing parts on the ship-
ping bill and notify the shipping company and your con-
tract partner.
We do not assume any liability for subsequent com-
plaints.
◊Operate the units exclusively within the permissible
operating ranges.
◊Do not expose the unit to direct streams of water
High-pressure cleaners, etc.
◊Protect the connection lines from being damaged, for
example, by animals.
◊The unit may only be connected to a correctly in-
stalled and grounded power supply.
◊Never open the unit housing.
There may cause an electric shock.
◊Operate the unit only when assembled and for their
intended purpose. Keep in mind that it is dangerous
to remove covers protective grilles, etc., during op-
eration; this can lead to uncontrolled operating situa-
tions.
◊Never operate the unit in rooms susceptible to explo-
sions. The units are also not suitable for operation in
rooms containing large amounts of dust or aggres-
sive air.
◊Installation and repair work may only be performed by
authorised personnel.
◊Cleaning and minor maintenance work made only be
performed by the operator or an authorised person
designated by him in accordance with the instructions
contained in the section "Maintenance and Service".
◊If the unit is set up outside and is susceptible to being
hit by lightning, the appropriate countermeasures
must be implemented by an authorised company.
Operation
The chiller is operated fully-automatically by an internal
regulation or by an external cable remote control in-
stalled by the customer.
Both types of unit operation allow some parameters to
be changed as well as the water return temperature to
be displayed.
Internal and external regulation
Instructions:
◊When shipped, the units are packaged in a box and
mounted on a palette.
◊The units must remain upright and be transported
with suitable means. They must also be adequately
secured from falling over.
◊If the units are transported to a setup location that is
higher up, such as platforms or roofs, they must be
transported in an upright position as shown below.
Pulling point
Wooden boards to pro-
tect from pressure
CH-DIN regulation Cable remote control

6
Regulation
CH–DIN regulation of all RKW INOX units
The CH–DIN microprocessor regulates the chiller for all
INOX units. It is located in the electrical switch box of
the unit and monitors all control and safety functions:
◊Controls and displays incoming and outgoing cold
water temperatures
◊Displays the time delay of the compressor and fan
◊Checks that the outgoing water temperature is not
too low (frost monitoring)
◊Displays and controls all safety mechanisms that
have been stopped due to a malfunction
◊Displays the operating mode
◊Regulates the condensation temperature
The regulator consists of the basic unit to control unit
operation. A fan board is connected to the basic unit
that controls the rotation of the fan motors by regulating
the output current depending on the liquefaction tem-
perature.
Models RKW 3600 INOX and higher have two cold cy-
cles. The second cycle cannot be regulated by the CH–
DIN basic unit because there are not enough inputs and
outputs. For this reason, the extra C2-DIN regulator
controls the second cycle. Programming is, however,
still performed using the CH–DIN basic unit.
Value Display
The value display shows the target value in degrees
with one decimal place in Celsius. It can also display:
◊All parameter settings
◊The codes for all alarms
◊The status of the functions
◊The operating hours
◊The shut-off status
◊The current delays
A square LED displays minus temperatures and an LED
in the top left-hand corner shows the multiplier of the
displayed value with 100.
8 8. 8
Arrow Keys
The set value for each parameter can be changed with
the arrow keys.
When the parameter programming operating mode is
accessed (via the MENU button), both displays show a
value (continuous display). After the SET button has
been pressed, the code display (parameters) starts
blinking. The displayed values can be increased or de-
creased using the arrow keys. If the SET is pressed a
second time, the value display blinks. The new values
are saved by pressing the SET button again. Both dis-
plays switch from a blinking display to a continuous display.
MENU Button with one LED
The MENU button provides access to the parameter list
and displays the parameters on the code display and
the associated value on the value display.
MENU
CH–DIN panel
CH-DIN
Line
Alarm
Comp
Heat
Cool
STATUSMENU
ON/OFF
RESET
8 8
8 8.
8
SET
MODE
e
Value display Code displayArrow keys
MODE button SET button
MENU button STATUS button ON/OFF
RESET button
Code Display
The code display indicates the number of the parameter
(or the function) whose value or status appears in the
value display. If a parameter is shown in the code dis-
play, the setting appears in the value display.
8 8
STATUS Button with one LED
The STATUS button provides access to the status list
and displays the status settings by pressing the arrow
keys.
The code display shows the function number of the
function list and the value display shows the corre-
sponding setting. The codes and their descriptions are
described in the table on page 8.
STATUS
The panel has two displays: the value display (three
numbers on the left) and the code display (two numbers
on the right).
The buttons allow operating
processes (parameters) and their associated values to
be changed.
STATUS
MENU ON/OFF
RESET
SET
MODE
MODE Button with two LEDs
The regulation mechanism was designed for use of a
chiller in the cooling operating mode and as a
heat pump in the cooling and heating operating
modes.
Only the summer operating mode (cooling mode)
may be used for all INOX units.
MODE
Cool e
Heat
Cool e

7
C2–DIN Additional Regulations for Models RKW 3600
and higher
For chillers with cooling capacities higher than 26 kW,
the cooling capacity is divided among two cooling cy-
cles. The second cycle cannot be regulated using the
CH-DIN regulation because there are not enough inputs
and outputs and requires an additional C2-DIN regula-
tion. The C2-DIN regulation controls the same functions
together with the CH-DIN regulation. These functions
are only displayed by LEDs. An alarm from the second
cycle is displayed on the CH-DIN regulation display as a
code, e.g. “E 01”.
The CH-DIN regulation is still used to program the set-
tings of the second cycle.
ON/OFF
RESET
ON/OFF/RESET Button
This button is used to switch the unit on and off. If the
alarm has been set off and the unit has to be manually
reset, this button is pressed to prevent further alarms
from being acknowledged. At the same time, the normal
operating function of the unit is restored.
Alarm
Alarm LED
If this LED is lit up, the unit’s alarm has gone off and op-
eration has been interrupted.
SET
SET Button
The parameters settings can be changed by pressing
the SET button together with the arrow keys.
Fan Board
The fan board is connected to the CH–DIN regulation.
The CH-DIN (C2-DIN) regulation registers the current
condensation temperature via the sensor input ST 5 (ST
6) and passes along the corresponding programmed
output current to the CTK 1 (CTK 2) output of the TK 1
(TK 2) fan board.
The fan motor rotation can be controlled by the modulat-
ing output current.
Compressor LED
This LED is not lit up when the compressor is not in op-
eration. If this LED is blinking, the compressor is cur-
rently in start-up time delay and will begin operation af-
ter this time has elapsed. If this LED is continuously lit
up, the compressor is in operation. The time delay is no
longer active.
Comp
Line LED
This LED is continuously lit up when the regulation is
connected to the power supply.
Line
Fan board TK 1 Fan board TK 2
Operating Display Compressor 2
This display lights up when the compressor of the sec-
ond cycle is in operation.
Compr.
Err. compr.
Malfunction Display Compressor 2
This display lights up when there is a malfunction in the
compressor of the second cycle.
High Pressure MalfunctionCycle 2
This display lights up when pressures that are too high
have been set in the second cycle.
High press.
Low Pressure MalfunctionCycle 2
This display lights up when pressures that are too low
have been set in the second cycle.
Low press.
Malfunction Display Fan 2
This display lights up when there is a malfunction in the
fan of the second cycle.
Err. fan
C2-DIN additional regulation CH-DIN regulation
C2–DIN Additional Regulation
C2-DIN
High press.
Err. fan
Low press.
Err. compr.
Compr.
Operating display Compressor 2
Malfunction display
High pressure 2
Malfunction display Compressor 2
Malfunction display
Fan 2 Malfunction display Low pressure

8
Determining the Operating Mode (Status)
The Status menu is used to determine the current operating mode of the various system components such as oper-
ating hours, outputs currently set, the current actual values of the sensor inputs and any current malfunctions.
Pressing the STATUS button takes you to the Status menu (Status LED is lit up). The left-hand value display now
indicates the current operating mode of the statuses in the right-hand code display using the index described in the
table below. These can be listed by pressing the arrow keys in sequence:
Status Status Description Index Meaning
01 Compressor 1 01
02
03
04
06
Compressor 1 in cooling mode
Compressor 1 in heating mode (not in use)
Compressor 1 in defrost cycle (not in use)
Compressor 1 in time delay ON
Compressor 1 OFF
02 Run time Compressor 1 # (value in hours) Operating hours of Compressor 1
03 Fan(s) Cycle 1 01
02
04
06
In operation
Off (defrost for heating pump)
Time delay ON
OFF
05 Rotations condenser fan(s) Cycle 1 # (value as a %) Fan rotation as a percentage
21 Compressor 2 ---
01
02
03
04
06
Not installed
Compressor 2 in cooling mode
Compressor 2 in heating mode (not in use)
Compressor 2 in defrost cycle (not in use)
Compressor 2 in time delay ON
Compressor 2 OFF
22 Run time Compressor 2 ---
# (value in hours) Not installed Operating hours of Compressor 2
23 Fan(s) Cycle 2 ---
01
02
04
06
Not installed
Fans in operation
Off (not in use)
Time delay ON
OFF
25 Rotations condenser fan(s) Cycle 2 ---
%Not installed Fan rotation as a percentage
40 Sensor incoming water temperature
ST 1 (Cycle 1) ---
# (value in °C)
ON
OFF
ERR
Not installed
Actual value in 0.1°C intervals
Sensor activated
Sensor not activated
Sensor malfunction or failure
41 Remote control ON/OFF ---
ON
OFF
Remote control not installed
Remote control active
Remote control locked
42 Sensor outgoing water temperature
ST 2 (Cycle 1) ---
# (value in °C)
ON
OFF
ERR
Not installed
Actual value Cycle 1
Sensor activated
Sensor not activated
Sensor malfunction or failure
43 Sensor outgoing water temperature
ST 3 (Cycle 2) ---
# (value in °C)
ON
OFF
ERR
Not installed
Actual value Cycle 2
Sensor activated
Sensor not activated
Sensor malfunction or failure
44 Sensor condenser temperature
ST 5 (Cycle 1) ---
# (value in °C)
ERR
Not installed
Actual value condenser Cycle 1
Sensor malfunction or failure
45 Sensor condenser temperature
ST 6 (Cycle 2) ---
# (value in °C)
ERR
Not installed
Actual value condenser Cycle 2
Sensor malfunction or failure
46 Cold water pump ---
01
06
Not installed
Pump in operation
Pump not in operation
47 Run time cold water pump ---
# (value in hours) Not installed Operating hours of the pump
48 Defrost heating
(not in use) ---
01
06
Not installed
Heating in operation
Heating not in operation
8 1
STATUS
104 0
206 0
STATUS
Programming process

9
Parameter Function Unit RKW INOX factory setting
1000 1600 2600 3600 4500 8000 9800
02 Target value regulation, cooling °C 12,0 12.0 12.0 12.0 12.0 12.0 12.0
03 Target value regulation, heating °C 45.0 45.0 45.0 45.0 45.0 45.0 45.0
04 Cooling hysteresis °C 1.0 1.0 1.0 0.8 0.8 0.8 0.8
05 Heating hysteresis °C 1.0 1.0 1.0 0.8 0.8 0.8 0.8
26 Frost protection alarm target value °C 4.0 4.0 4.0 4.0 4.0 4.0 4.0
92 Password entry -Technical data sheet
Table of the first parameter level
Changing the Target Values (Parameters)
A parameter is a modifiable value that can be set by the
operator/installer to adjust the chiller to the specific con-
ditions and guarantee optimum operation.
For example, the return temperature, the frost protec-
tion alarm temperature and the new switch-on differen-
tial can be changed after the target temperature has
been reached.
Access rights for system operators and qualified main-
tenance and service personnel is divided into two pa-
rameter levels. The operator can only change basic pa-
rameters on the first level and the service personnel can
change system-specific parameters on the second level
after entering a password.
A technical data sheet which explains the second pa-
rameter level can be requested separately by a qualified
company from REMKO GmbH &Co. KG.
First Parameter Level for the System Operator
The first parameter level is accessed by pressing the
ON/OFF/RESET button. The current return temperature
is displayed.
After pressing the MENU button, the programmed value
of Parameter 02 (right-hand code display) appears in
the left-hand display. The right-hand parameter display
begins to blink when the SET
button is pressed. This mode displays the options for
changing the parameters to the programmer.
If one of the arrow keys is now pressed, the parameter
jumps to the next higher or lower parameter.
Once the correct value has been reached for the pa-
rameter, the value display begins to blink after the SET
button has been pressed. The displayed value can now
also be changed using the arrow keys. The program-
ming level can be exited by pressing the SET button a
third time. The settings are saved and the return tem-
perature is displayed again.
The unit almost never requires maintenance. Regular
care and the observation of a number of basic rules will
ensure the unit’s long service life and reliable operation.
◊We recommend concluding a maintenance agree-
ment with a company who specialises in this type of
work. This will guarantee that the system operates
safely at all times!
◊Keep the unit free of dirt, plants and other deposits
and only clean the units with a damp cloth.
Do not expose the units to a direct stream water.
◊Do not use an abrasive cleaning agent or one that
contains solvent; if the units are extremely dirty, only
use suitable cleaning materials.
◊Before taking the unit out of operation for a longer
period of time, clean the plate fins of the unit while
the ventilator is in operation and cover the unit with a
plastic sheet to prevent dirt from entering the unit.
◊For systems with brine, check the ratio of water to
Antifreeze N or Antifreeze L before taking the unit out
of operation in winter to protect the system from
frost.
◊We recommend having the unit checked at regular
intervals (once or twice a year) to ensure that it is
functioning properly and there are no leaks.
MENU
8 1
SET
2 0
3 0
2 0
1 1
SET
0 1
SET
0 1
MENU
Programming process
Maintenance and Service

10
List of the alarm codes
Shutting Down the Unit
Temporary shutdown
If the unit is to be taken out of operation for a longer pe-
riod of time, for example, over the winter, proceed as
follows:
1. Use the remote control to shut down all of the inner
units.
2. Switch off the internal regulation in the chiller (or the
remote control).
3. Have the percentage of glycol is checked by an
authorised company.
4. If only water was used in the hydraulic cycle and no
brine (water and antifreeze), this water must be
drained from system components in areas suscepti-
ble to frost during the period of non-operation. When
the unit is put back into operation, the amount of wa-
ter that has been drained must be refilled!
5. Check the inner units and the chiller for any visible
damage.
6. Clean the inner units and outer parts as described in
section 5 “Maintenance” and cover the chiller, if pos-
sible, with a plastic sheet to protect it from weather
conditions.
When the unit is put back into operation after a long pe-
riod of non-operation, it must first be checked for exter-
nal damage before operation.
Code Alarm Type AUTO MANUAL
E00 Remote control defective (open contact)
E01 High pressure alarm Cycle 1
E02 Low pressure alarm Cycle 1
E03 Condenser overheating Cycle 1
E04 Condenser temperature too high
E05 Frost protection Cycle 1 activated
E06 Sensor defective ST 2 outgoing water Cycle 1
E07 Sensor defective ST 5 condenser Cycle 1
E21 High pressure alarm Cycle 1
E22 Lobe pressure alarm Cycle 1
E23 Condenser overheating Cycle 2
E24 Condenser temperature too high
E25 Frost protection Cycle 2 activated
E26 Sensor defective ST 3 outgoing water Cycle 2
E27 Sensor defective ST 6 condenser Cycle 2
E40 Sensor defective ST 1 incoming water
E41 Flow switch (differential pressure monitor) activated
E42 Hardware defective
The second parameter level can be
programmed to reset the alarms.
Enter the changed resets in the left-
hand column.
All settings made at the factory
have been pre-programmed to
AUTOMATIC.
Alarm Description
To protect the unit, the CH-DIN regulation and the C2-
DIN additional regulation use sensors to check the unit’s
safety mechanisms for temperature, pressure, internal
configuration, etc.
The value display of the CH-DIN regulation indicates the
alarm code by displaying the letter E followed by two
numbers. The cause of the alarm can be determined by
finding the code in the table below. The C2-DIN addi-
tional module also displays the alarm with a correspond-
ing LED.
On the second parameter level, resetting the alarm can
be programmed after the malfunction has been fixed
The alarms are pre-programmed to automatically reset
at the factory.
If the alarms have been reprogrammed to be reset
manually, the alarm must be reset after the problem has
been fixed by switching the CH-DIN and then on again
with the ON/OFF/RESET button (see programming ex-
ample below).
Resetting the alarms after the problem has been fixed
The alarms can be reset by following the programming process below. As an example, the compressor switched off
due to a malfunction caused by dirt in the condenser fins.
3 1
2 0
Overheating of the
condenser as a
result of dirt in the
fins
1 2 E
Alarm
Temperature of the
condenser is low-
ered and the fins of
the heat exchanger
are cleaned
ON/OFF
RESET
Alarm
ON/OFF
RESET
Programming process
Permanent shutdown
For environmental safety reasons, the chiller may only
be disassembled by authorised service centres.
REMKO GmbH & Co. KG or your contract partner would
be happy to provide you with the name of a service cen-
tre in your area.

11
Troubleshooting
This unit has been designed based on state-of-the-art manufacturing methods and it has been tested repeatedly to
ensure that it is working properly. However, should problems occur, refer to the following list.
Problem Alarm Possible cause Check Remedy
The unit
does not
start or it
switches
itself off
automati-
cally.
Power failure Are all other electrical components
working? Check voltage and wait for the unit to start again.
Power fuse / power supply de-
fective Are all other electrical components working? Maintenance by authorised personnel
Waiting period too short Is the COMP LED blinking? Schedule longer waiting periods
Regulation is not working Is the LINE LED and to the
COOL LED lit up? Connect current and select the COOL operating mode
Incorrect discharge tempera-
ture or parameter setting Check setting Change setting
E01/E02
E21/E22 High-low pressure alarm Are the fans rotating? Is the pressure in the cold cycle OK? Have checked by authorised company
E00/E21 Remote control / Connection
to C2-DIN defective Is the display working? Is the connection OK? Replace remote control or re-
establish connection between
CH-DIN and C2-DIN
E03/E23 Compressor overheating Is the temperature of the compressor
above approx. 100 °C? Maintain operating ranges, clean fins
E04/E24 Liquefaction temperature too
high Are the fins clean and have the oper- ating ranges been maintained? Clean fins, place unit in the shade
E05/E25 Frost protection activated Is the supply temperature 4°C or
lower? Increase discharge temperature
E06/E07/
E26/E27/
E40 Sensors defective ST1 to ST6 It is the alarm activated when the
sensor is replaced? Replace defective sensors
E41 Flow switch (differential pres-
sure monitor) activated
Are the following values OK:
◊Volume of current (too large/small)
◊No air in the monitoring pipes
◊Circulation pump
◊Does the monitor switch on and off
◊Stop mechanisms are open
◊Water pressure too high/low
Have checked by authorised
company
E42 Hardware defective Does the regulation function
smoothly? Have regulation replaced by authorised company
Compressor contact defective Is the COMP LED lit up and is there
current on the contact? Have the contact or compressor
replaced by an authorised com-
pany
The unit is
either not
cooling at
all or only
a little bit
Heating capacity was in-
creased Has there been a structural change? Maintain safety zones
Supply temperature too high Is the supply temperature approx.
5 ... 10 °C? Reduce discharge temperature
Air in the system Have automatic ventilators been mounted on the highest possible po-
sition?
Ventilate manually or integrate
ventilators
Liquefaction temperature too
hot Are the fins clean and have the oper- ating ranges been maintained? Clean fins, place unit in the shade, maintain operating ranges
Incorrect parameter settings Check settings Change settings
Sporadic operation because cooling requirements are too
low
Has the system been designed for
smaller measurements? Increase the quantity of water by installing a storage module
Water
leaks out
of the unit Leaks in pipes or defective in-
sulation Are there leaks and have all lines
been insulated? Seal and insulate
Incorrect electrical rotational
direction Did the phase-sequence relay switch through? Change the rotational direction

12
Technical Data
(1) Capacities based on ISO R 859A; room temperature of TK 27°C/FK 19°C -outside temperature 35°C, supply 7 °C, discharge 12 °C
(2) Noise measurement DIN 45635 -01 -KL3 in intervals of 10 meters
(3) Only when brine is used (water with 34% glycol)
(4) Power data per cooling cycle
Type RKW INOX
1000 1600 2600 3600 4500 8000 9800
Cooling capacity 1) kW 10,0 16,0 25,6 35,9 44,3 78,0 98,0
Air performance max. m³/h 3000 6200 10000 17000 19000 35000 39000
Number of fans / diameters -/mm 2/450 2/450 1/630 2/630 2/630 2/800 2/800
Rated flow rate water m³/h 1,8 2,8 4,4 6,2 7,6 13,4 16,9
Minimum flow rate water m³/h 1,3 1,9 3,0 4,5 5,2 8,8 10,8
Pump pressure max. kPa 70 90 74 ----
Internal pressure losses for rated flow rate kPa 25 37 40 32 29 19 20
Available external pressure differential kPa 45 53 34 ----
Operating pressure max. kPa 250
Incoming water chiller inch 1¼ 122x2
Outgoing water chiller inch 1¼ 1½ 22x2
Filling connection inch 1/2 -
Sound pressure level 2) dB(A) 43 44 49 48 48 53 54
Refrigerant R 407C
Cold cycles/Compressor type -1 Scroll 2 Scroll 2 Tandem Scroll
Refrigerant amount kg 5,0 4,1 8,0 2x7,4 2x7,6 2x20,5 2x21
Contents storage tank l45 45 108 ----
Operating range outgoing water °C + 5 °C to + 15 °C
Operating range outside temperature 3) °C -10 °C to + 43 °C
Nominal current consumption
per compressor 4) A8.0 12.8 18.8 26.3 2x16.3 4x14.6 4x18.4
Nominal current consumption. max. A8.0 12.8 18.8 26.3 32.6 58.5 73.5
Electrical connection V/Ph/Hz 400/3~,N,PE/50
Power consumption. max. kW 4.4 7.1 11.2 15.7 19.4 36.0 45.2
Starting current A49 101 167 2x90 2x120 2x116 2x127
Supplied fuse protection (recommended) A20 20 25 35 50 80 100
Dimensions Width mm 1150 1150 1340 2370 2370 2990 2990
Depth mm 460 460 560 560 560 1280 1280
Height mm 1300 1300 1770 1310 1310 1520 1520
Weight kg 160 197 300 437 461 902 934
Ref. No. 1611600 1611610 1611620 1611635 1611645 1611650 1611660

13
RKW 2600 INOX
Model size 1000 INOX 1600 INOX 2600 INOX 3600 INOX 4500 INOX 8000 INOX 9800 INOX
Amm 1150 1150 1340 2370 2370 2990 2990
Bmm 460 460 560 560 560 1280 1280
Cmm 1300 1300 1770 1310 1310 1520 1520
Dmm 625 625 90 715 715 900 900
Emm 615 615 1610 1180 1180 520 520
Fmm 220 220 160 1100 1100 1300 1300
Gmm ---------------290 290
Kincoming water inch 1 ¼ ‘‘ inside 1 ¼ ‘‘ inside 1 ¼ ‘‘ inside 2 ‘‘ inside 2 ‘‘ inside 2 x 2 ‘‘ inside 2 x 2 ‘‘ inside
Loutgoing water inch 1 ¼ ‘‘ inside 1 ¼ ‘‘ inside 1 ½ ‘‘ inside 2 ‘‘ inside 2 ‘‘ inside 2 x 2 ‘‘ inside 2 x 2 ‘‘ inside
Mfilling connection (water) inch ½ ‘‘ outside ½ ‘‘ outside ½ ‘‘ outside ------------
Fan / number Ø mm / -450 / 2 450 / 2 630 / 1 630 / 2 630 / 2 800 / 2 800 / 2
AB
C
F
D
E
L
K
RKW 1000 INOX / 1600 INOX
BA
F
E
D
C
L
K
ABF
D
E
G
C
L
K
RKW 8000 INOX / 9800 INOX
Depending on the size of the unit, a certain number of vibration absorbers are supplied with the unit. These have a height of approx. 30 mm
up to the model size RKW 4500 I, and of approx. 45 mm for model size RKW 8000 I and higher which must be added to the heights above
(measurement C).
Dimensions
RKW 3600 INOX / 4500 INOX
K
ABF
C
E
D

14
General information
◊The chillers are units for outside setup.
◊Wind protection devices must be set up if the air ex-
pelled from the unit does not flow in the same pri-
mary direction as the wind.
◊You must ensure that the wind protection does not
adversely affect the air supply to the unit.
◊When setting up the unit, ensure that adjacent
rooms or buildings are not exposed to adverse ef-
fects from noise emitted from the units. You should
avoid setting up the units on large, reverberant sur-
faces, such as between reflecting buildings, because
this can increase the noise level.
◊The chillers must be mounted on vibration absorbers
or foundations which prevent vibrations (to be done
by the customer).
◊If the chillers are also used during the winter months,
the unit must be assembled high enough so that it is
protected from snow. The minimum height is 20 cm
above the normal amount of snow expected.
◊To ensure that the unit operates smoothly, adequate
safety distances to walls and other obstacles must
be maintained during setup.
Unit Assembly
The REMKO RKW INOX chillers have been designed
and built for outside setup. Because a lot of heat is ex-
pelled to the surroundings, make sure that when you se-
lect a location for setup, air can flow freely in and out of
the unit.
It is generally not advisable to set up the unit in en-
closed rooms because adequate air exchange with the
outside air cannot be guaranteed and there must be an
equal amount of air intake and output.
An adequate air exchange can only be guaranteed if a
corresponding cross ventilation supplies fresh air to the
room at least at the air flow rate of the chiller. Otherwise
the room will heat up and the chiller will switch off due to
a malfunction. This occurs once the room temperature
exceeds the upper operating range of the set value of
the safety mechanism.
Minimum distances
These safety zones ensure that air can flow freely in
and out of the unit, that maintenance and repair work
can be performed and to protect the unit from damage.
The figure below indicate the minimum distances that
must be maintained to ensure that the units operate
properly.
RKW 2600 INOX
500
300 300 600
RKW 1000 / 1600 INOX
500
300 300 500
1000
1000
Assembly Instructions for
Service Personnel
Prior to installation
The following must be checked and complied with be-
fore the unit is actually assembled:
◊Ensure that the contents of the package are com-
plete and that the unit has no visible damage results
in from transport. Any problems must be communi-
cated immediately to your contract partner and the
shipping company. Subsequent complaints will not
be acknowledged.
◊Place the unit in its original packaging as close as
possible to the location where it will be assembled.
This will prevent damage resulting from transport.
◊Ensure that the foundation for installing the chiller is
level, even, firm and resistant.
Pay attention to the load capacity of the foundation.
◊Choose a place for installation which guarantees a
free air intake and air discharge of the unit and
where the unit is not exposed directly to the sun or
other heat sources.
◊The air discharge of the unit should be in accor-
dance with the main direction of the wind.
◊Keep all distances which are described in the chap-
ter “minimum distances”
◊Prior to installation, the electrical connection values
must be checked for consistency with the data on
the type plate.
◊All indoor units must have a separate electric supply.
◊An electric control cable to the chiller is not neces-
sary.

15
RKW 8000 / 9800 INOX
600
600
1200
1200
3000
RKW 8000 / 9800 INOX
933 998998
1150
RKW 3600 / 4500 INOX with storage module
430 770
500
770
RKW 2600 INOX
770
500
Attachment locations for chillers
RKW 1000 / 1600 INOX
735
400
RKW 3600 / 4500 INOX without storage module
417 950
500
950
Installation of the units
The units are supplied with vibration absorbers in this
series. These must be connected to statically permissi-
ble and level building or structural components.
The locations for attachment described below are for
fastening the vibration absorbers to the chillers. To es-
tablish an attachment to a subconstruction, the dimen-
sions of the vibration absorbers must be observed.
Vibration absorbers
RKW 1000 -4500 INOX RKW 8000 –9800 INOX
66 66
13Ø
M12 x 35
45 60
43 43
8Ø
RKW 3600 / 4500 INOX with storage module
400 400 400
500
1000
RKW 3600 / 4500 INOX without storage module
400
400 400
500
1000

16
Hydraulic connections
The hydraulic connections are located on the back of
the units.
The RKW 1000 and 1600 INOX units are ready to be
connected upon shipment.
For the RKW 2600, 3600 and 4500 INOX units, it is
possible to separate the plate heat exchanger of the
chiller and the storage module mounted underneath this.
For the RKW 2600 INOX unit, the plate heat exchanger
and the storage module are connected hydraulically by
the pipe connection installed at the factory.
For the RKW 3600 and 4500 INOX units, the plate heat
exchanger and the separately ordered storage module
must be connected upon assembly with the supplied
pipe connection. If the module is set up separately, the
necessary connection line must be installed by the cus-
tomer
The RKW 8000 and 9800 INOX units in this series are
supplied without hydraulics. The required components
are selected by the person who develops the system.
General information
◊We recommend equipping the connections with
shut-off valves for service purposes.
◊Additional, automatic ventilation valves must be
mounted at the highest location of the installation in
the supply and discharge pipes.
◊To prevent vibrations from being transferred, com-
pensators (flexible lines) should be used between
the fixed pipe installation and the chiller.
◊All pipe lines must be insulated to protect them from
condensation. According to the HeizAnlV (German
Heating Systems Ordinance), a 50% insulation di-
ameter must be planned for cooling mode and a
100% insulation diameter for cooling and heating
mode.
◊To prevent the unit from becoming dirty, a water filter
(approx. 16 meshes pro cm²) should be installed in
the discharge line.
◊The water pipes may not exert any static strain on
the chiller.
◊A second key or pliers must be used to mount the
pipe lines on the RKW so as not to create any strain
on the pipe lines in the inside of the unit.
◊If the chiller is only initially operated with a single part
of the overall system, the flow rate of the missing
system parts must be stimulated by pipe regulating
valves.
◊To increase the run time of the unit, we recommend
using a storage module or cold water pipes that are
slightly larger to increase the volume if the necessary
capacity of the inner units is considerably smaller
than the cooling capacity of the chiller.
◊The hydraulics must be set up in such a way that the
predefined minimum flow rate is reached.
Model Water
incoming outgoing
1000 INOX 1 ¼ ‘‘ inside 1 ¼ ‘‘ inside ½ ‘‘ outside
1600 INOX 1 ¼ ‘‘ inside 1 ¼ ‘‘ inside ½ ‘‘ outside
2600 INOX 1 ¼ ‘‘ inside 1 ½ ‘‘ inside ½ ‘‘ outside
3600 INOX 2 ‘‘ inside 2 ‘‘ inside -
4500 INOX 2 ‘‘ inside 2 ‘‘ inside -
3600 INOX with
storage module 2 ‘‘ inside 2 ‘‘ inside ½ ‘‘ outside
4500 INOX with
storage module 2 ‘‘ inside 2 ‘‘ inside ½ ‘‘ outside
8000 INOX 2 x 2 ‘‘inside 2 x 2 ‘‘ in-
side -
9800 INOX 2 x 2 ‘‘inside 2 x 2 ‘‘ in-
side -
Filling con-
nection
Shut-off valve Compensator
Static attachment RKW connection
Connecting the water pipes
The RKW 1000, 1600 and 2600 INOX models in this
series are equipped with a cold water storage module
as a compact unit. The 3600, 4500, 8000 and 9800
INOX models are supplied in this series without hydrau-
lics for technical reasons. The water components in-
cluding the plate heat exchanger and the differential
pressure monitor are located in the chiller. The hydraulic
connections are found on the backs of all units.
For models RKW 3600 and 4500 INOX and higher, a
separate storage module can be mounted underneath
the chiller or somewhere else (e.g. inside the building).
So as not to transfer the vibrations of the chiller to the
system parts, the lines are connected to the unit by
compensators (flexible lines). We recommend equip-
ping the connections with shut-off valves for service pur-
poses.

17
RKW 1000 / 1600 INOX
Incoming water
Outgoing water
RKW 2600 INOX
Incoming water
Outgoing water
RKW 3600 / 4500 INOX with separate storage module
Incoming water
Outgoing water
Incoming water
Outgoing water
Hydraulic connection RKW 8000 / 9800 INOX
Incoming water
Outgoing water
Storage module for
RKW 3600 to 9800 INOX
For the RKW 3600, 4500, 8000 and 9800 INOX models,
it is not necessary to use a storage tank for certain
types of use
Other types of application absolutely require the volume
of water to be increased, for example, to extend the op-
erating time of the chiller and prevent sporadic opera-
tion.
Five storage modules have been designed to meet
these practical requirements:
1. Storage module 1 for RKW 3600 and 4500 INOX,
216 l tank, safety component 3 kPa and MAG,
without pump,
Ref.No.: 1611530
2. Storage module 2 for RKW 3600 and 4500 INOX,
216 l tank, safety component 3 kPa and MAG,
including prompt, Vnenn: 6,2/7,6 m³/h, pmax: 124/118 kPa
Ref.No.: 1611540
3. Storage module 3 for RKW 8000 and 9800 INOX,
2 x 216 l tanks, safety component 3 kPa and MAG,
without pump,
Ref.No.: 1611545
4. Storage module 4 for RKW 8000 and 9800 INOX,
2 x 216 l tanks, safety component 3 kPa and MAG,
including pump, Vrated: 13,4/16,9 m³/h, pmax: 90/82 kPa
Ref.No.: 1611550
5. Storage module 5 for RKW 8000 and 9800 INOX,
2 x 216 l tanks, safety component 3 kPa and MAG,
incl. 2 x pumps, Vrated: 13,4/16,9 m³/h, pmax: 95/65 kPa
Ref.No.: 1611555
The storage modules 1 and 2 are to be attached under
the RKW 3600 and 4500 INOX chillers by means of the
standard connection line. In Module 2, the circulation
pump is installed at the factory.
The storage modules 3, 4 and 5 can be set up on top of
one another to save space. The circulation pump(s) of
Modules 4 and 5 cannot be placed inside the modules
due to the design. They must be set up separately.
The hydraulic components which are to be placed in an
easily accessible location include the insulated storage
tank, a safety component, a manometer, a membrane
expansion vessel (MAG) and a filling connection with
ball stop valve.
Hydraulic Connections
Incoming water
Outgoing water
RKW 3600 / 4500 INOX with the storage module below

18
3600 4500 8000 9800
Storage module for RKW INOX 1212345345
Storage contents l216 2 x 216
Number of pumps -1-1-12-12
Incoming water / Outgoing
water inch 1½ 1½
Filling connection inch 1/2 1/2
Operating pressure max. kPa 250 250
Rated volume current water m³/h 6.2 7.6 13.4 16.9
Minimum volume current
water m³/h 4.5 5.2 8.8 10.8
Pump pressure max. kPa -124 -118 -90 95 -82 65
Storage pressure loss,
internal kPa 58610 811 10 11 15 13
Available external pressure
differential kPa -92 -89 -59 66 -47 32
Electrical connection V-3~,400 -3~,400 -3~,400 -
Power/Current consumption kW/A 0.55/1.44 0.55/1.44 -0.75/1.86 1.1/2.88 -0.75/1.86 1.1/2.88
Dimensions Width mm 2370 2 x 2370
Height mm 535 2 x 535
Depth mm 560 2 x 560
Weight when empty, storage kg 123 126 123 126 246 246
Weight pump kg -3-3-46-46
Ref.No. 1611530 1611540 1611530 1611540 1611545 1611550 1611555 1611545 1611550 1611555
3~,400
Storage module dimensions
Parallel operation Individual operation
Storage Module Technical Data
Hydraulic operation of the storage module

19
Assembling the storage module
1. Remove the transport packaging and, if applicable,
assemble the vibration absorbers onto the bottom of
the storage module.
If the storage module is to be placed below the
chiller, the vibration absorbers do not need to be at-
tached.
2. Attach the storage module horizontally using the
brackets of the vibration absorbers to a statically per-
missible attachment location.
If the modules are to be set up on top of one another
to save space, the vibration absorbers only need to
be attached to the bottom module.
3. For hydraulic parallel operation of the storage mod-
ules, the pipe line connections are to be connected
depending on the necessary hydraulics. When at-
taching the storage modules below the chiller for the
RKW 3600 and 4500 INOX modules, the supply con-
nection line can be attached.
4. If the vibrations from the storage module are not to
be transferred to the pipe line network, compensa-
tors with the correct dimensions are to be selected.
Electrical connection
Type RKW 3600 INOX /
RKW 4500 INOX RKW 8000 INOX / RKW 9800 INOX
Electrical connection
Power consumption 0.55 kW 0.55 kW 0.75 kW
Cur. consumption max. 1.44 A 1.44 A 1.86 A
400 V, 50 Hz / 3~, N, PE
Characteristic curve of the pump RKW 3600 / 4500
INOX storage module 2
Characteristic curve of the pump RKW 8000 / 9800
INOX storage module 4
Characteristic curve of the pump RKW 8000 / 9800
INOX storage module 4
Follow these instructions to perform the electrical instal-
lation:
◊These electrical installations may only be performed
by authorised service personnel in accordance with
the relevant regulations.
◊The units must always be connected with low-ohm
protection conductor is with sufficient to dimensions.
In certain circumstances, the module must be
grounded as a measure to protect against lightning
in several places.
◊The connection line of the pump is to be guided
through the respective cable penetration on the back
of the chillers into the housing in the switch box and
wired in accordance with the wiring diagram.
◊All of the pumps to be installed in the storage mod-
ules are designed as three-phase alternating current
motors. The power supply of the pumps is performed
on the L1, L2, L3, N and PE terminal strips.
◊The dimensions of the lines is based on the local
conditions. The connection capacity of the units can
be found in the table below:
G
Prior to performing any work on the unit, it must be
unplugged from the power supply and secured
against being inadvertently switched on!

20
Electrical connection of the cable remote control
The remote control comes with an operating module
TS-W, the additional regulation module CS-DIN/TTL
and an interface line.
Cable Remote Control
The cable remote control can be purchased as an ac-
cessory. It is used to query and program the chiller from
a remote location.
In the factory, all models are programmed using the re-
mote control.
Install the remote control as follows:
1) Place the two, two wire connection lines between the
location where the remote control is to be assembled
and the switch box of the chiller. The minimum
cross-section is Cu 1.5 mm². The max. current may
not fall below 2 %.
2) Remove the assembly back panel of the operating
module and attach it to the setup location.
3) Clamp the lines to the terminal strips of the elec-
tronic board and make sure that the polarity is cor-
rect. Lock the operating module into place in the as-
sembly back panel.
4) Insert the additional module into the switch box of
the chiller.
5) Clamp the lines to the terminal strips of the previ-
ously mounted additional regulation module in the
switch box of the chiller.
6) Using the interface line, you can connect the addi-
tional regulation module and the CH–DIN regulation.
7) Test the function of the remote control.
Percent-
age of
ethylene
glycol
Correction factors when using a brine
made of ethylene glycol * and water
Cooling
capacity Power
consump-
tion Flow rate Pressure
loss
Vol. % °C KLKPE KVKD
001111
20 -11 0.96 0.995 1.04 1.19
34 -20 0.95 0.990 1.09 1.35
40 -25 0.925 0.985 1.105 1.51
Anti-
freeze
*We recommend an ethylene glycol with inhibitors as
corrosion protection, e.g. antifreeze N or L.
Where the heat medium comes into contact with
drinking water or food, antifreeze L is to be given
preference because it contains the physiologically
harmless substance 1.2 propylene glycol.
The data provided in the table refers to antifreeze N.
Antifreeze L has other correction factors and thus a
different pressure loss!
Antifreeze to prevent freezing
During cold seasons of the year, it is possible that the
water in the chiller will freeze at temperatures below 0°C
which can cause damage, for example, to the plate heat
exchanger. The same applies to installed connection
lines and system parts in rooms not susceptible to frost.
For this reason, we recommend mixing the water with
an adequate amount of antifreeze (e.g. antifreeze N).
If brine (a mixture of water and frost protection) is not
used in the hydraulic cycle, the water is to be drained
from the system parts in areas susceptible to frost dur-
ing non-operation in the winter.
Appropriate shut-off and drainage mechanisms are to
be used. The amount of water drained out must be re-
filled before the next cooling season begins.
If the chiller is to be used throughout the whole year, e.
g. to air-condition a computer room) the hydraulic cycle
must be operated with brine.
When using brine, you must make sure that the pres-
sure loss increases as a result of the changing density
in the hydraulic cycle. Whether or not to use brine must
be considered when the hydraulic cycle is being set up.
The variable technical data can be found in the table be-
low:
The operating module is to be mounted in the desired
location. The operating module is connected to the
RKW with two, two-wire lines with a maximum length of
50 m. One line is used to transfer data and the other to
supply the current 12 V~ of the operating module. It is
not necessary to use an additional transformer.
The programmed data is transferred to the CH–DIN
regulation by an interface line.
CS-DIN/TTL TS-W