REMKO RXW 350 / 480
Wall units
Operation
Technology
Spare Parts
Edition GB – S11
REMKO – powerful like a bear.
Operating Instructions
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 changes!
Wall units
REMKO RXW 350 / 480
Content Page
Safety Instructions 4
Transport and Packaging 4
Description of Device 4
Operation 5
Shutting Down the Unit 9
System Structure 10
Combinations 10
Maintenance and Service 10
Troubleshooting 11
Technical Data 12
Dimensions 12
Always keep these operating instructions near or on the unit!
Content Page
Assembly Instructions for Service Personnel 13
Installation 13
Electrical Connection 15
Wiring Diagram 15
Condensation Connection 15
Prior to Initial Operation 16
Initial Operation 16
Customer Service and Guarantee 17
Environment and Recycling 17
Certification for Initial Operation 18
3
Safety Instructions
Extensive tests have been conducted on the material,
functionality and quality of the 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 air conditioner check the unit for visible defects
on the operating and safety mechanisms each time
before putting it into operation.
◊ Before performing any work on the unit, the power
cord must be unplugged and the unit secured
against being switched on by unauthorised persons.
◊ Operate the unit only when assembled and for its in-
tended purpose.
◊ Keep in mind that it is hazardous to remove covers,
protective grilles, etc., during operation; this can lead
to uncontrolled operating situations.
◊ Operate the unit exclusively within the permissible op-
erating ranges.
Observe surrounding temperatures.
◊ Make sure that the unit is kept at a safe distance
from flammable objects.
◊ Ensure that no foreign objects block the air intake
and outlet openings.
◊ Do not insert foreign objects into the air intake or
outlet openings of the unit.
◊ Do not place any objects on top of the unit.
◊ Never operate the units in rooms susceptible to ex-
plosions.
◊ The units are also not suitable for operation in rooms
containing large amounts of dust or aggressive air.
◊ Do not use flammable sprays such as hair spray or
spray paint in the direct vicinity of the units.
◊ Do not operate the units if the atmosphere is con-
taminated by oil, sulphur or salt.
◊ Do not expose the units to direct streams of water.
High-pressure cleaners, etc.
◊ Protect the indoor unit and the remote control from
moisture and direct sunlight.
◊ Never open the units’ housing!
This may cause an electric shock.
◊ Regularly check that condensation is not blocked from
flowing out of the units.
◊ Make sure that the outdoor unit is equipped with a
safety mechanism which prevents the condenser from
being damaged caused by the unit switching back on
right away after it has been switched off.
The unit may only be switched back on after 3 minutes.
◊ Cleaning and minor maintenance work may only be
performed by the operator or an authorised person
designated by the operator in accordance with the
instructions contained in the "Maintenance and Service" section.
◊ These REMKO air conditioners are supplied with the
environmentally-friendly refrigerant R 410 C.
◊ Installation and repair work may only be performed
by authorised personnel.
Transport and Packaging
The units are shipped in a stable transport box made of
cardboard. Please examine the unit when it is delivered.
Make note of any damage or missing parts on the shipping bill and notify the shipping company and your contract partner. We do not assume any liability for subsequent complaints.
Description of Device
The air conditioners in the REMKO RXW 350 / 480 series are split-design, wall-mounted, direct-condensing
units that can be used for both cooling and heating.
They are to be operated in combination with corresponding REMKO outdoor units.
The way the air conditioning system works is quite simple; warm air is removed from the room to be cooled.
The environmentally-friendly refrigerant R 410C transports this warm air.
The units’ primary function is to air-condition rooms.
They also filter and dehumidify the air, thus creating a
comfortable climate in the room. The units also have a
pure ventilation and dehumidification mode. In heating
mode, the warm air absorbed by the outdoor unit is
transferred to the indoor unit.
All units operate fully-automatically and offer a range of
other options thanks to their microprocessor control.
They are operated using the supplied infrared remote
control.
4
Operation
Two to four seconds after the indoor unit has been connected to the power supply, operation can begin.
Inserting batteries into the remote control
Prior to initial operation, the batteries supplied with the
unit (2 type AAA batteries) must be inserted into the remote control.
1. Slide off the cover of the battery slot on the remote
control and insert the batteries.
2. Make sure that the polarity is correct.
Use the labelling in the slot.
3. Close the battery slot again.
The remote control
The air conditioner is operated using the infrared remote control.
A beep indicates that a button has been pressed and
the signal has been correctly received.
3
5
4
7
9
1
2
6
10
8
11
1 ON/OFF button
The unit is switched on with this button.
The settings appear on the display.
2 TEMP UP/DN button
This button is used to decrease the temperature
down to no more than of 16°C or increase the temperature up to 30°C.
3 FAN SPEED button
This button is used to set the desired speed.
There are 4 speeds available:
automatic, low, medium and high.
4 MODE button
This button is used to select the operating mode.
The indoor unit has 5 modes:
Automatic:
In this mode, the unit operates in cooling or heating mode.
Cooling:
In this mode, the warm room air is cooled down to
the desired temperature.
Dehumidifying:
In this mode, the room is primarily dehumidified
and the set temperature is maintained.
Ventilation:
In this mode, the air in the room is circulated. It is
not possible to select the temperature.
Heating:
In this mode, the warm room air is heated to the
desired temperature.
5 SWING button
This button directly activates the oscillating function
of the fins to improve the air distribution in the room.
6 SLEEPING button
After this button is pressed in cooling mode, the target temperature automatically increases by 1°C
within one hour and in heating mode, the target
temperature decreases by 1°C within one hour.
7 T-ON button
The unit is programmed to automatically switch on
within the next 24 hour-period with this button.
8 T-OFF button
The unit is programmed to automatically switch off
within the next 24 hour-period with this button.
9 CANCEL button
The timer settings are reset by pressing this button.
10 RESET button (lower)
The remote control settings are reset by pressing
this button.
11 CLOCK button
The time setting is activated by pressing this button.
5
Button functionality
The following settings can be made using the remote control at a distance of no more than 7 m. Point the remote
control at the receiver on the right side of the indoor unit. The unit beeps to confirm that a button has been pressed
and the signal has been correctly received.
A symbol on the display shows that the
settings are being transmitted.
CLOCK button
ON / OFF button
By pressing the CLOCK button, the time can be programmed.“AM” blinks on the display
and the current time is set using the TEMP UP/DN button. Pressing the CLOCK button
again closes the programming function and the display no longer blinks.
.
Functional process
CLOCK CLOCK
TEMP ▲
By pressing the ON / OFF button, the air conditioning unit is switched on and off. The
settings and setting values programmed before the unit was last switched off appear on
the display.
Functional process
ON/OFF ON/OFF
TEMP ▲ / ▼ button
FAN SPEED mode
By pressing the TEMP UP/DN button, the desired target temperature can be increased
or decreased. When the unit is in automatic mode, it is not possible to set the temperature. The temperature setting must be selected beforehand in a different mode
Functional process
TEMP ▲ TEMP ▼
The fan speed is selected with this button. You can select either low, medium, high or
automatic fan speed.
Functional process
FAN SPEED FAN SPEED
FAN SPEED
FAN SPEED
6
MODE button
Use the MODE button to select the individual operating modes. There are 5 modes
available:
1. Automatic, automatic selection of cooling or heating mode
2. Cooling, operating mode primarily for summer
3. Dehumidifying, summer or winter operating mode
4. Ventilation, only for air circulation
5. Heating, operating mode primarily for winter
Functional process
Automatic mode
Cooling mode
AUTO
Automatic Cooling Dehumidifying Heating
MODE
MODE MODE MODE
Ventilation
MODE
In automatic mode, the control mechanism automatically switches between heating
and cooling mode. If the room-temperature is above 25°C the indoor unit starts to cool
down the room-air. If the room-temperature is below 20°C the indoor unit starts to heat
up the room-air.
Functional process
MODE
COOLING
The target temperature is
below room temperature
or
HEATING
The target temperature is
above room temperature
In cooling mode, the room air is cooled to the set target temperature. The desired room
temperature is set in 1°C increments with the TEMP UP/DN button.
If the temperature is 1°C above the set target temperature, the indoor unit begins to
cool the room air. If the adjusted room temperature falls approx. 0.5°C and the
compressor’s minimum term of 6 minutes is transgressed, the control mechanism
switches cooling mode off. To protect the compressor, the control mechanism is only
reactivated after 3 minutes have elapsed.
Dehumidifying mode
Ventilation mode
Functional process
MODE
COOLING MODE
In dehumidifying mode, the room temperature is decreased to 24°C. Due to the low
temperature of the refrigerant, the temperature of the fin exchanger falls below the dew
point of the air. The excessive moisture in the air condenses on the fin exchanger and
the room is dehumidified. The fan speed should be set to automatic to reach maximum
dehumidification capacity. In automatic mode, the fan switches on and off at intervals.
Functional process
MODE
DEHUMIDIFYING MODE
In ventilation mode, the air in the room is only circulated. The room temperature cannot
be changed in this mode. Cooling or heating mode is not activated.
Functional process
MODE
VENTILATION
7
Heating mode
In heating mode, you can heat the room in spring and autumn. The selected room temperature is set in 1°C increments with the TEMP UP/DN button. If the room temperature falls 1°
C below the selected target temperature, the indoor unit begins to heat the room air. If the
adjusted room temperature falls approx. 0.5°C and the compressor’s minimum term of
6 minutes is transgressed, the control mechanism switches cooling mode off.
To protect the compressor, the control mechanism only reactivates heating mode after
3 minutes have elapsed.
SWING button
SLEEPING button
Functional process
MODE
HEATING MODE
The oscillating function of the air outlet fins is set with this button. To directly position the air
outlet fins, this button must be pressed again. The swing function improves the air distribution in the room.
Functional process
SWING SWING
With this button, a program is activated that increases the target temperature by 1°C after
one hour and 2°C after two hours when the unit is in cooling mode. In heating mode, the
target temperature is decreased by 1°C after one hour and by 2°C after two hours. The display of the indoor unit is not lit up.
Functional process
Timer buttons
T-ON / T-OFF
T-ON button
Delayed start
T-OFF button
Delayed stop
SLEEPING SLEEPING
The unit is programmed to automatically switch on or off with this button. By pressing the TON / T-OFF button, the timer is activated and the time display disappears. The timer symbol ON or OFF time blinks. By pressing the TEMP UP/DN button, the desired timer on or off
time is set. Once the setting is made, the respective timer button has to be pressed again.
The display of the indoor unit is lit up.
If the programmed time is reached, the unit automatically switches on or off. If the indoor
unit automatically switches on, the last mode, temperature and fan speed setting is activated.
To disable the timer on or off function prior to its activation time, press the CANCEL button.
The display of the indoor unit is not lit up.
Functional process
T-ON
T-OFF
TEMP UP/DN
TEMP UP/DN
T-ON
Delayed
start
T-OFF
Delayed
stop
8
RESET button
By pressing the lower RESET button, the remote control can be reset. Afterwards, the
time must be programmed (see “CLOCK button“).
Functional process
RESET 5 sec. Clock setting
Display on the indoor unit
The display is lit up depending on the current settings.
During operation, the on / off display and the selected
mode and the target temperature are displayed.
Display of fan
speed
Heating mode Cooling mode
Display for target
value and display
Automatic mode
Circulation mode
Receiver Dehumidifying mode
On / Off
Shown on the display
Malfunctions are shown as a code on the display of the
indoor unit. After the malfunction has been fixed, the control mechanism operates with the previously set parameters.
F1 Room air sensor or defective
F2 Frost protection sensor defective/activated
HI Defrost phase
Manual operation
The unit can be manually operated, if, for example, the
infrared remote control is not functioning properly or
has been lost.
Manual air distribution
There are individually adjustable air directing plate fins
on the air outlet side for horizontally distributing the air.
Never adjust the fins when the unit is in automatic
swing mode! Do not reach into the unit!
There is a risk of injuring your hand on the fan
motor.
Shutting Down the Unit
Temporary shutdown
1. Let the unit run in cooling mode for half an hour.
2. Switch the indoor unit off using the remote control.
3. Disconnect the system with the main switch or fuse
protection from the power supply.
4. Check the indoor unit for visible damage.
5. Clean the indoor unit as described in the
“Maintenance and Service” section.
Open the air intake grille of the indoor unit and press
the button on the right side.
The following operating modes are then activated:
MODUS = Automatic
TEMP. = 24 °C, FAN = Automatic,
SWING = On, TIMER = Off.
9
System Structure
The indoor unit is connected to the outdoor unit with refrigerant pipes.
Indoor unit
◊ Before and after the operating season, check
whether the diameter of the condensation pipes has
become smaller as a result of dirt.
If so, they must be cleaned.
◊ Clean the air filters of the indoor unit at regular inter-
vals, more often if necessary, as described on this
page.
Indoors
Outdoors
Refrigerant pipes
Outdoor unit
Condenser fan
Shut-off valve
Combinations
Cooling and heating
RXW 350 RXW 480
RKS 435 H
RKS 448 H
•
•
Never operate the indoor unit without the air filter.
The air filter prevents the plate fin exchanger of the
indoor unit from becoming dirty and the unit’s performance from being adversely affected.
◊ 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!
Cleaning the filters
Clean both air intake filters at intervals of no longer than
two weeks. If the air is extremely dirty, shorten this timeframe accordingly.
To clean the air filters, proceed as follows:
1. Open the front of the unit by pushing the grille up
and locking it into place.
2. Lift the filters up and then
pull them out.
Maintenance and Service
Before any work on the units is performed, they
must be disconnected from the power supply and
secured against being inadvertently switched on!
Regular care and the observation of a number of basic
rules will ensure the units’ long service life and reliable
operation.
◊ Keep the units free of dirt and other deposits.
◊ Clean the units with a damp cloth.
Do not expose the units to a direct stream of water.
◊ Do not use an abrasive cleaning agent or one that
contains solvent.
◊ If the units are extremely dirty, only use suitable clean-
ing materials.
10
3. Clean the filters using a
standard vacuum cleaner.
4. Extreme dirt can be carefully removed with lukewarm water.
Then let the filters air dry.
5. Replace the filters and close the grille.
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.
Please keep in mind that the indoor units are supplied with power via the outdoor units. As a result, we also
recommend reading the "Troubleshooting" section in the operating instructions for the outdoor units.
Before any work on the units is performed, they must be disconnected from the power sup-
ply (fuse or repair switch) and secured against being inadvertently switched on!
Problem
The unit does not start or
it switches itself off
automatically.
The unit is not responding
to the remote control.
The unit is either not
cooling at all or only a
little bit.
Condensation water is
leaking from the indoor
unit.
Possible cause Check Remedy
Power failure, power too low Are all other electrical components work-
Power fuse / main switch defective
Power supply line damaged Are all other electrical components work-
Amount of time waited after
switching unit on was too short
Operating temperature too low /
too high
Excess current caused by thunderstorms
Problem with the external condensation pump
Sensors that are defective or
not properly attached
Timer set to “ON” Is the timer set? Delete programming and wait for the unit
Polarity of batteries incorrect
after replacement
Transmission distance too
great / reception blocked
Remote control defective Does the unit work in manual mode? Replace remote control
Too much direct sunlight on the
receiver or transmitter
Electromagnetic fields are disrupting transmission
Remote control buttons stuck /
two buttons pressed at once
Dead batteries in the remote
control
Temperature setting too high Is the selected temperature above the
Filter is dirty / intake / outlet
opening is blocked by foreign
bodies
Windows and doors are
opened / increased amount of
warm air or cold air
Cooling mode is not set Does the cool symbol appear on the
Plate fins of the outdoor unit
are blocked by foreign bodies
Cooling cycle is not leak proof Is there a build-up of frost visible on the
The condensate pipe of the
condensation collector is
blocked / damaged
External condensation pump or
float regulator is defective
ing?
Are all currents for lighting functional? Replace power fuse /
ing?
Did approx. 5 minutes elapse after restarting?
Are the fans on the indoor unit and outdoor unit working?
Was there recently lightning in the region ?
Did the pump switch off due to a malfunction?
Is the indoor unit displaying an error
message?
Is the polarity correct? Insert batteries with the correct polarity
Is there a transmission signal when the
button is pressed?
Does the unit work in the shade? Place the transmitter or receiver in the
Does the unit work after potential causes
of disruption have been eliminated?
Does the send symbol appear on the
display?
Are the batteries new? Is the display
incomplete?
room temperature?
Have the filters been cleaned? Clean filters
Have there been changes in design or
use?
display?
Is the fan of the outdoor unit working, are
the plate fin exchangers moving freely?
plate fin exchangers of the indoor unit?
Can condensation flow freely? Clean the condensate pipe and the
Is the collector filled with water and the
pump is not working?
Check current and wait for the device to
start again
switch on main switch
Maintenance by authorised service centre
Plan for longer waiting periods
Pay attention to temperature ranges of
indoor unit and outdoor unit
Switch the system off and then back on
again / maintenance by authorised
service centre
Check pump and clean if necessary
Maintenance by authorised service
centre
to start
Reduce distance to under 7 m and
change location
shade
No signal transmission when sources of
disruption are operated simultaneously
Unstick button / only press one button
Insert new batteries
Reduce selected temperature
Close the windows and doors / mount
additional systems
Correct the unit settings
Check the fan or winter control mechanism, reduce air resistance
Maintenance by authorised service
centre
condensation collector
Have pump checked by authorised
service centre
Should the unit still not work after performing these functional checks, please contact the closest dealer or
REMKO GmbH & Co KG. directly.
11
Technical Data
RXW 350 RXW 480
Operating mode Cooling and heating
Nominal cooling capacity * kW 3.49 4.78
Nominal heating capacity ** kW 3.78 5.17
Operating range °C +16 to +30
Refrigerant R 410A
Circulating air volume per speed m³/h 460/ 550 / 620
Sound pressure level per speed *** dB(A) 34 / 37 / 41 37 / 41 / 44
Power supply V/Ph/Hz 230 / 1 / 50
Protection type IP X0
Electr. nominal power consumption cooling* kW 1.07 1.49
Electr. nominal power consumption heating** kW 1.09 1.52
Electr. nominal current consumption cooling A 4.91 6.91
Electr. nominal current consumption heating A 4.99
Refrigerant connection injection pipe
Refrigerant connection suction pipe
Refrigerant pipe, length max. m 10
Refrigerant pipe, height max. m 5
Dimensions height mm 285
width mm 830
depth mm 205
Weight kg 11.0
Serial number 685... 686...
Ref. No. 1619100 1619110
Inches (mm)
Inches (mm)
1/4“ (6.35)
1/2“ (12.7)
480/ 560 / 620
7.01
* Room temperature DB 27, WB 19 °C; outside temperature DB 35 °C, WB 24 °C in combination with RKS 435 H or RKS 448 H
** Room temperature DB 20, WB 14 °C; outside temperature DB 7 °C, WB 6 °C in combination with RKS 435 H or RKS 448 H
*** Distance 1m
Dimensions
RXW 350 / RXW 480
830
285
205
12
Assembly Instructions for
Service Personnel
Important instructions prior to installation
◊ Only use the swivel nuts supplied for the refrigerant
pipes.
Other components can damage the thread.
◊ Ensure that the contents of the package are com-
plete and that the units have no visible damage resulting from transport. Any problems must be communicated directly 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 to
prevent damage from transport.
◊ Do not install the unit in the direct vicinity of objects
that emit intense heat.
Lights, etc.
◊ Select a location to set up the unit where air can flow
freely in and out of the device.
Observe minimum distances.
◊ The condensation pipe must be placed at an incline
of at least 2 %.
◊ If this pipe is connected to a sewage pipe, an odour
seal must be installed the upper edge which may not
extend beyond the lower edge of the indoor unit.
◊ Remove the protective caps of the unit connections
just before connecting the refrigerant pipes.
◊ All electrical connections must meet the relevant re-
quirements. The power supply is only connected to
the outdoor unit.
◊ The control line to the indoor unit should be placed
together with the refrigerant pipe.
◊ Make sure that the electrical lines have been prop-
erly attached in the electrical terminals.
◊ The indoor unit and outdoor unit of the REMKO air
conditioner have been adjusted to one another from
a technical standpoint.
The guarantee becomes null and void if third-party
components are used.
◊ Remember that when installing and maintaining air
conditioners, high-pressure refrigerant pipes and
electrical current can pose hazards.
◊ During unit operation, some components in the cool-
ing cycle can reach temperatures of more than 70°C.
Be especially careful when covers are removed.
◊ The air intake and outlet openings may not be blocked
by furniture, curtains, etc.
◊ The refrigerant pipes may not be bent or pressed.
◊ Protect open refrigerant pipes from moisture with suit-
able caps or adhesive.
◊ Prevent unnecessary bends to minimise the pres-
sure loss in the refrigerant pipes and ensure that the
compressor oil can recirculate properly.
◊ If the outdoor unit is mounted above the indoor unit,
make sure to take steps to recirculate the oil.
Install oil elevation arcs.
◊ Make sure that all refrigerant pipes including all con-
nectors and valves are insulated against heat and
sealed against diffusion.
Minimum distances for the indoor unit
The distances required for smooth operation of the indoor
units are specified in the following figure
150
150
150
1500
200
These minimum distances ensure that the air can flow
freely in and out of the unit and that there is sufficient
space for maintenance and repair work. They also protect the unit from damage.
Dimensions in mm
Installation
Make absolutely sure to follow the instructions below
prior to assembling the indoor unit:
◊ When assembling the indoor unit, make sure that
the required minimum distances are observed.
◊ Assemble the indoor unit in such a way that conden-
sation drainage is not blocked and air can always
flow freely in and out of the unit.
◊ The indoor unit is attached by means of a wall
mount.
13
Lead-through options
Prior to installation, take a look at the various options
for lead-throughs of the refrigerant and condensation
pipes and control lines (see figure below).
1
2
3
1 Opening on the wall rear 2 Opening through the wall right
3 Opening through the wall left 4 Opening on the wall left
4
Connecting the refrigerant pipes
RWK 260 RWK 350
RKS 435 H
RKS 448 H
Injection pipe 1/4“ (6.35)
Suction pipe 1/2“ (12.7)
Injection pipe 1/4“ (6.35)
Suction pipe 1/2“ (12.7)
-
-
Attaching the wall mount
The units must be attached with suitable screws and
dowels. The attachment points are displayed in the following figure.
Attachment points
3. When assembling the unit, observe the bending radii
of the refrigerant pipes and never bend the hose in
the same place twice. This may cause the pipe to
become brittle or crack.
4. Remove the preinstalled swivel nuts of the units.
5. Keep in mind that the indoor units have been filled
with dry nitrogen as a sealant at the factory.
The pressurised nitrogen is released when the
swivel nuts are loosened.
6. When assembling the unit, only use tools suitable
for low temperature ranges.
7. Work with the pipes as described in the operating
instructions of the outdoor units.
8. Insulate the installed refrigerant pipes including the
connector against heat.
9. Only use insulation hoses sealed against diffusion
that are suitable for this temperature range.
10. If you have selected option 2 or 4 (opening through
the wall), guide the condensation water and control
line through the wall lead-through to the indoor unit.
If you also need a condensation pump, it must be
installed beforehand.
11. If, due to structural design conditions, it is not possi-
ble to guide the condensation pipe through as well,
make sure that the condensation can drain freely at
all times.
12. Hang the indoor unit leaning slightly to the back in
the previously assembled wall mount and press the
bottom of the unit into the mount.
Do not damage the pipes and ensure that they are
in the correct position.
45
215
512
430
168
Assembling the indoor unit
Install the indoor unit as follows:
1. The required pipe diameters are provided in the
"Technical Data” table of the outdoor unit.
Only use refrigerant pipes with refrigerator quality.
2. Decide which drainage option you want to use for
the indoor unit and cut the refrigerant pipes accordingly.
13. Lay the refrigerant pipes from the indoor unit to the
outdoor unit.
14. Connect the refrigerant pipes to the outdoor unit as
described in the operating instructions of the outdoor unit.
14
Electrical Connection
A power supply line must be installed on the indoor unit
and a control line installed to the outdoor unit.
Included with the units are a two-wire and three-wire
(RXW 350) or a two-wire and four-wire (RXW 480) control line. If the lines are not used or extended, a fivewire (RXW 350) and a six-wire (RXW 480) can be used.
All electrical installations may only be performed by
authorised personnel in line with the relevant regulations.
Local guidelines for operation as well as the requirements established by local energy supply companies
must be observed for setup and initial operation.
Prior to performing any work on the unit, it must
be unplugged from the power supply and secured
against being inadvertently switched on!
Please observe the following:
◊ We recommend that the customer install a main or
repair switch close to the indoor unit.
◊ Power is supplied to the outdoor unit via a control
line from the indoor unit.
◊ The system’s fuse protection must comply with the
technical data.
◊ The electrical terminals of the connections are lo-
cated on the lower right hand side of the indoor unit.
◊ If a condensation pump, which can be purchased as
an accessory, is used with the unit, an additional relay must be used to increase the switching capacity,
to switch off the compressor, when using the deactivation contact of the pump!
RXW 350
Customer-installed connection
line
1. Compressor control
2. Neutral conductor
3. Protecting earthing
conductor
Power supply line
1. L1
2. N
3. PE
Customer-installed connection
line
1. Fan motor
2. Reverse valve
Wiring Diagram
RKS 435H connections
Cooling and heating mode
Outdoor unit
red
yellow
2
Compressor control
N(1)
Neutral conductor
Phase conductor
3
Prot. earthing
conductor
Fan control
Reverse valve control
2
N(1)
PE PE
redd
yellow
N
L1
PE
Power supply Indoor unit
230 V~,
N
50 Hz,
L1
L1 / N / PE
PE
RKS 448H connections
Cooling and heating mode
Outdoor unit
red
yellow
2
To the compressor contactor
N(1)
Neutral conductor
3
Phase conductor
Prot. earthing
conductor
Fan control
Reverse valve control
2
N(1)
3
PE PE
red
yellow
N
L1
PE
Power supply Indoor unit
230 V~,
N
50 Hz,
L1
L1 / N / PE
PE
Condensation Connection
Condensation forms on the plate fin exchanger of the
indoor unit during cooling operation because temperatures below the dew point are reached.
The indoor unit is equipped with a condensate collector
and a condensation hose for the condensation that accumulates.
The condensation hose is connected to the left side
(seen from the front) in this series.
RXW 480
Customer-installed connection
line
1. Compressor contactor
2. Neutral conductor
3. Protection earthling conductor
4. Phase conductor
Power supply line
1. L1
2. N
3. PE
Customer-installed connection
line
1. Fan motor
2. Reverse valve
Condensation hose cannot be used
Condensation hose Condensation connection
to the condensate collector
On the right side (seen from the front), there is a second condensation hose that is locked into the condensate collector . This connection cannot be used.
15
Follow the instructions below to lay the condensation
hose:
◊ The condensation drainage pipe is generally
placed in the same guideway as the refrigerant
pipes.
◊ If, as a result of structural design conditions, it is nec-
essary to have a different guideway for the condensation hose, the hose can also be guided to the indoor
unit through a different drain.
◊ If the unit is being operated at outside temperatures
below 0°C, the hose must be placed in such a way
that it is protected from frost.
◊ Always use suitable hose clips.
◊ If the condensation is being guided to a drainage
pipe, please install a siphon-like hose guideway
which acts as an odour seal.
◊ Make sure there is an adequate
incline for drainage.
It must be at least 2 %!
2 % incline
◊ Since condensation is created, the condensation
hose must be isolated.
◊ After the hose has been laid, check to make sure
that condensation can drain freely.
◊ The supplied condensation
hose can be extended using
standard hoses.
Initial Operation
Once all components have been connected and
checked, the unit can be put into operation. Initial operation must be performed using the certificate and must be
documented.
Following initial operation, the operator must be trained
in its operation and the initial operation log given to him.
Functional check and test run
To ensure that the unit is functioning properly, a functional check must be performed to identify any irregularities during unit operation before the unit is handed
over to the operator.
This check is dependent on the installed outdoor unit.
These procedures are documented in the operating instructions of the outdoor unit in use.
The functional tests are started via the indoor unit.
The following must be checked:
◊ Check refrigerant pipes for leaks.
◊ Check that the fan and compressor are running
smoothly.
◊ Conduct a functional test of the indoor unit and all
program processes.
◊ Check the surface temperature of the suction pipe
and determine the evaporator overheating value.
To measure the temperature, hold the thermometer on
the suction pipe and subtract the boiling point temperature recorded on the manometer from the measured temperature.
Prior to Initial Operation
After the pressure check has been performed and a
vacuum is created (see the “Initial Operation” chapter in
the operating instructions for the outdoor unit), the following checks must be performed:
◊ Check that the condensation drains properly.
◊ Check that the additional components function prop-
erly.
Condensation pumps, etc.
◊ Check the refrigerant pipes and the insulation for
damage.
◊ Check that the electrical connection between the in-
door unit and the outdoor unit has the correct polarity.
◊ Check all fixtures and suspended parts to ensure
that they are in the proper position and at the correct
height.
Before starting the test runs, follow the instructions below:
1. Remove the caps from the valves.
2. To begin initial operation, briefly open the shut-off
valves until the manometer displays pressure measuring approx. 4 bar.
3. Check all established connections for leaks using
leak locator spray or suitable devices.
4. If you did not find any leaks, open the shut-off valves
by turning them all the way counter-clockwise with a
hexagonal wrench.
5. If you find leaks, the connection must be reestablished.
It is absolutely necessary to create a new vacuum
and dry the unit!
16
Cooling operation test run
Perform a test run for cooling operation as follows:
1. Switch the main switch or fuse on.
2. Adjust the target temperature on the indoor unit to a
lower value than the existing room temperature using the remote control.
3. Switch the unit to cooling mode with the remote control.
The compressor starts a couple of minutes later
due to the delayed start.
4. Check that cold air is being expelled from the indoor
unit and warm air from the outdoor unit.
5. During the test run, check all regulating, control and
safety mechanisms to ensure that they are functioning and set properly.
6. Check the indoor unit’s control mechanisms using the
functions described in the operating instructions.
Timer, temperature settings, fan mode and dehumidifying mode as well as all other mode settings.
7. Measure overheating, outside, inside, outlet and
evaporation temperatures and enter these values in
the initial operation log.
Heating operation test run
Perform a test run for heating operation as follows:
1. Adjust the target temperature on the indoor unit to a
higher value than the existing room temperature using the remote control.
2. Switch the unit to heating mode with the remote con-
trol.
3. Check that warm air is being expelled from the in-
door unit and cool air from the outdoor unit.
4. During the test run, check all regulating, control and
safety mechanisms to ensure that they are functioning and set properly.
5. Check the indoor unit’s control mechanisms using the
functions described in the operating instructions.
Timer, temperature settings, fan mode and dehumidifying mode as well as all other mode settings.
Customer Service
and Guarantee
For the guarantee to be valid, the purchaser or his customer must completely fill out the "guarantee certificate"
enclosed with all units and send it back to REMKO GmbH
& Co. KG
and initial operation.
The units are repeatedly tested at the production site to
ensure that they are working properly. If a malfunction
occurs that cannot be eliminated by the operating personnel, please contact your dealer or contract partner.
Proper use
The indoor units have been designed and fitted exclusively for operation with REMKO outdoor units belonging
to the RKS series.
The manufacturer assumes no liability for damage resulting from non-compliance with manufacturer specifications and legal requirements, or if modifications are
made to the units.
Environment and Recycling
Only authorised personnel may come into contact with
the cooling cycle. This ensures that refrigerant does not
escape into the environment when the unit is being repaired. Both the refrigerant and the system parts are
subject to special requirements for disposal.
The refrigerant in use is a safety refrigerant. This means
that, should damage occur, the quantities released will not
cause injury to the respiratory systems of people and
animals.
in a timeframe that coincides with purchase
Operation/handling which does not comply with
these instructions is prohibited!
In cases of non-compliance, we assume no liability
and the guarantee becomes null and void.
Important information about recycling!
Do not touch the liquid refrigerant as it can freeze the
skin!
Completing initial operation
1. Remove the manometer and reattach all parts that
were removed.
Make sure that there are seals in the caps.
2. Complete the certificate for initial operation, famil-
iarise the operator with the system and give him the
filled out certificate for initial operation.
17
Certification for Initial Operation Date 01/2005
Initial Operation Subsequent Operation of a REMKO air-conditioning system
Unit data
Type of unit
Unit number
Refrigerant pipe length/height
Oil elevation arcs
Additional refrigerant amount
Condensation pump
Operator / Setup location
Street: Postal code, country, city:
Telephone: Fax:
Test of cooling cycle
Visual check: Setup of outdoor unit and indoor unit
Heat-exchanger, insulation, pipes
Electrical fuse protection type A
Electrical power/control line (Cu mm²/mm²)
Impermeability check: Vacuum mbar
Excess pressure mbar
Add. preparation: Refrigerant refill amount g
Shut-off valves open
Functional test: Condensation flow, condensation pump(s)
Cooling mode
Heating mode
Operational check: Compressor mode
Fan mode
Measurement tests: Room temperature / Air outlet temperature °C / °C
Suction temperature / Overheat °C / K
Comments:
Outdoor unit Indoor unit
———– m/ m
———– unit
g ———–
———–
Name:
Result
/
/
/
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
5 good 4 poor
The air conditioning system above was put into operation without any objections.
The operator has been trained and the operating instructions distributed.
The unit could not be put into operation for the reasons indicated above.
Executing company:
Company:
Street:
Postal Code, City:
Date Operator signature
18
Stamp and signature
Signature of person assembling unit
REMKO GmbH & Co. KG
Air-Conditioning and Heating Technology
D-32791 Lage • Im Seelenkamp 12
D-32777 Lage • P.O. Box 1827
Phone: +49 52 32 606 - 0
Fax: +49 52 32 606- 260
E-mail: export@remko.de
Internet: www.remko.de
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