Remko RXW 521 user guide manual

REMKO RXW

RXW 261, RXW 351, RXW 521, RXW 681

Wall units

Operation · Technology · Spare parts

Issue GB – U01

Contents

Safety notes

Environmental protection and recycling

Warranty

Transport and packaging

Description of the equipment

Combinations

Operation

Shutdown

Care and maintenance

Troubleshooting and customer service

Installation instructions for qualified personnel

Installation

Condensation connection

4

4

4

5

5

5

6-12

13

13-14

15-16

17

18

19

Electrical connection

Electrical connection diagram

Electrical circuit diagram

Commissioning

Unit dimensions

Unit illustration

Spare parts list

Technical data

These operating instructions should be read carefully
prior to commissioning / operation of the equipment!

19

20

20

20-21

21

22

22

23

Made by REMKO

These instructions are part of the equipment and must always
be kept in the vicinity of the installation or on the equipment

Subject to modifications; No liability accepted for errors or misprints!

3

REMKO RXW

4

Safety notes

Carefully read this manual before
starting the unit for the first time. It
contains useful tips,
information
warnings to prevent injury or
material damage
Non-observance of this manual
may endanger persons, the
environment as well as the
equipment itself and will void any
claims for liability.

■ Store this manual as well as

the refrigerant datasheet in the
vicinity of the unit.

■ The unit should only be set

up and installed by qualified
personnel.

■ The setup, connection and

operation of the unit and
its components must be in
accordance with the operating
conditions stipulated in this
manual and comply with all
applicable local regulations.

■ Units designed for mobile use

should be safely set up on a
suitable floor and in a vertical
position. Units designed for
stationary use should only be
operated in their permanently
installed state.

■ It is prohibited to make

modifications or changes to
equipment or components
supplied by REMKO as this may
cause malfunctions.

■ Equipment and components

should not be operated in areas
where there is a heightened
damage risk. Observe the
minimum clearances.

■ The electrical supply should

be adapted to fulfil the
requirements of the unit.

as well as hazard

.

■ The operational safety of

equipment and components is
only assured providing they are
used as intended and in a fully
assembled state. Safety devices
should not be modified or
bypassed.

■ Do not operate equipment

or components with obvious
defects or signs of damage.

■ All housing parts and openings,

e.g. air inlets and outlets, must
not be blocked by foreign items,
fluids or gases.

■ The equipment and components

must be kept in a safe distance
from inflammable, explosive,
combustible, aggressive and
dirty areas or atmospheres.

■ Persons coming into contact

with equipment parts may suffer
burns or injury.

■ Installation, repair and

maintenance work should only
be carried out by authorised
specialists. Inspection and
cleaning can be performed
by the operator providing the
equipment is not under voltage.

■ Take appropriate hazard

prevention measures when
performing installation, repair or
maintenance work or cleaning
the equipment.

■ The equipment or components

should not be exposed to any
mechanical stresses, extreme
levels of humidity or direct
exposure to sunlight.

Environmental
protection and
recycling

Disposal of packaging

All products are packed for
transport in environmentally
friendly materials. Make a valuable
contribution to reducing waste
and sustaining raw materials. Only
dispose of packaging at approved
collection points.

Disposal of units and
components

For the manufacture of the units
and components, only recylable
materials have been used.
Help protect the environment
by ensuring that the units or
components (for example
batteries) are not disposed in
household waste, but only in
accordance with local regulations
and in an environmentally safe
manner, e.g. through authorised
disposal and recycling specialists or
at collection points.

Warranty

Prerequisite for any warranty
claims is that the purchaser or his
client has completely filled out the
"warranty registration card" and
commissioning report included
with the unit at the time when
the equipment was purchased and
commissioned and returned the
completed card to REMKO GmbH
& Co. KG.
The warranty conditions are listed
in the "General business and
delivery conditions. The contractual
parties can also agree additional
terms beyond the scope of the
above. For this reason please
contact your direct contracting
partner first.

Transport and

5

packaging

The equipment is shipped in sturdy
transport packaging. Immediately
check the equipment on delivery
and make a note of any damage or
missing parts on the delivery note.
Inform the forwarding agent and
contractual partner.

Warranty claims at a later date will
not be accepted.

Description of the
equipment

The indoor unit on the split-design
combined room air conditioning
units serves to extract heat from
the indoor room being cooled. The
outdoor component then expels
this heat to the outside.

Schematic of refrigerant circuit

Vaporiser

System design

Indoor area

Indoor unit

Condensation pipe

Outdoor area

Outdoor component

Vaporiser fan

Connection to suction line

Connection to injection line

Control cable

Injection pipe

If combined heating/cooling
units are operated as heaters, the
heat absorbed by the outdoor
component can be discharged
by the indoor unit into the room
being heated.

The unit is designed for installation
high up on indoor walls.
It is operated via an infrared
remote control.

The indoor unit consists of a fin
vaporiser, vaporiser fan, regulation
system and condensation pan.
The indoor unit can be combined
with REMKO outdoor components
that provide sufficient cooling
output. The outdoor component is
controlled via the regulation of the
indoor unit.

Condensation pumps
are available as an accessory.

Mains cable

Suction pipe

Stop valve
Liquefier fan

Condensation pipe

Refrigerant pipes are used to connect the indoor unit to the outdoor
component.

Combinations

Cooling / heating

RXW 261 RXW 351 RXW 521 RXW 681

RXS 261H
RXS 351H
RXS 521H
RXS 681H

Cooling

RXM 226
RXM 235
RXM 252
RXM 268
RXM 326
RXM 335
RXM 426
RXM 435

•

•

•

•

RXW 261 RXW 351 RXW 521 RXW 681

••

••

••

••

•• •

•••

••••

••••

REMKO RXW

6

Operation

The indoor unit is easy to operate
using an infrared remote control.
This is supplied as standard.
The indoor unit beeps to
acknowledge the correct
transmission of data.
If it is not possible to program
the indoor unit with the remote
control, then it can also be
operated manually.

Manual operation

The indoor units can be put into
operation manually. After the air
inlet screen has been opened,
the inner recessed button can be
pressed and automatic mode can
be activated.
In manual operation, the following
settings apply:

Cooling mode: last setting
Fan speed AUTO
Heating mode: last setting
Fan: AUTO

Press the button on the infra-red
remote control to interrupt manual
operation.

Infrared remote control

The infrared remote control
sends the programmed settings
in a distance of up to 6 m to the
receiver of the indoor unit.
A troublefree reception of data is
only possible if the remoter control
is directed to the receiver and no
objects hinder the transmission.

First insert the supplied batteries
(two each, Type AAA) into the
remote control.
To do so, remove the cover on the
battery compartment and insert
the batteries, in correct polarity.
(see marks).

Display on indoor unit

The display lights up according to
the settings.

Display on indoor unit

Swing operation

Cooling mode

Temperature unit

CAUTION

Problems are shown in code
(see chapter Troubleshooting
and Customer service).

Heating mode

Dehumidfiying mode

NOTE

Immediately replace flat
batteries with a new set,
otherwise there is a risk of
leakage. It is recommended
that the batteries are removed
if the equipment is shut down
for long periods.

Max. distance 6 m

max. 6 m

Automatic mode

Sleep function

Display

Display of coded

error messages,

room and target

temperature

Timer

Fan speed

Buttons on the remote control

7

Buttons on the remote control

"ON/OFF" Button

Press this button to start the
unit.

“TOO HOT“ Button

This button is used to the

desired temperature can be
increased down to 16 °C.

"TOO-COLD" Button

This button is used to the

desired temperature can be
increased up to 31 °C.

"MODUS" Button

Press this button to select the
operating mode. The indoor unit
has 4 modes:

2. Cooling mode
In this mode, the warm room
air is cooled to the desired
temperature.

3. Dehumidification mode
In this mode the room is mainly
dehumidified, the adjusted
temperature is retained.

4. Heating mode

(only for RXS...H)

In this mode, the warm air in
the room is warmed up to the
desired temperature.

This mode should not be used

for RXM units (malfunctions
may occur)

"FAN" Button

Press this button to set the

required fan speed. 4 levels
are available: Automatic, high,
medium and low fan speed.

"FINS“ Button

With this button, the desired fin

position can be set. There are
5 positions and an oscillating
function available.

"SLEEP" Button

After pressing this button, the

target temperature in cooling
operation increases within
half an hour automatically by

0.5 °C, in heating operation,
the target temperature is
reduced within one hour by
1 °C.

"SWING" Button

This button directly activates

the oscillating function of the
fins for better air distribution in
the room.

"TIMER ON“ Button

This button is used to program

the automatic turn on time
of the unit within the next 24
hours.

"TIMER OFF“ Button

This button serves to program

the automatic switch-off time
for the device within the next
24 hours.

"HR" Button

Press this button to set the

hours.

"MIN" Button

Press this button to set the

minutes.

“RESET button“

(in the battery compartment)

Press this button to reset the

remote control to its factory
default configuration.

"CLOCK" Button

(in the battery compartment)

By pressing this button, the

time setting is activated.

“DISPLAY“ Button

With this button, the display is

turned on and off (no influence
on unit function)

1. Automatic mode
In this mode, the unit works in
cooling or in heating mode.

REMKO RXW

8

Button functions

A symbol is shown on the display to indicate that the settings are being transferred.

Stand by of remote control

RESET Button

The stand by readiness of the remote control is signalled by the blinking
dot on the remote control.

By pressing the RESET button in the battery compartment, the remote
control can be reset. Then the time is to be programmed (see “CLOCK
button“).

RESET 5 sec. Setting the clock

ON/OFF Button

▲/▼ Buttons

By pressing the ON / OFF button, you can activate or deactivate your
unit. The programmed settings and adjustment values before the unit
was turned off will appear on the display.

ON/OFF ON/OFF

The ▼ button can be used to reduce the desired target temperature, the
▲button can be used to increase it. In automatic mode, the temperature
can be increased or decreased by 1° C.
In dehumidification mode, no temperature adjustment can be made.

▼

▼

The display turns off
after 1 min.

Cooling mode

Automatic mode

▼

▼

CLOCK Button

9

The time can be programmed by pressing the CLOCK button inside the
battery compartment. “CLOCK“ blinks in the display and the current
time is set via the HR. and MIN. button. Pressing the CLOCK button
again completes the programming, the display no longer blinks.

CLOCKHR/MINCLOCK

MODE Button

AUTOMATIC Mode

Use the MODE button to select between the individual operating modes.
A total of 4 modes are available:

1. Automatic cooling or heating operation

2. Cooling predominant operating mode for summer

3. Dehumification Operating mode for summer or winter

4. Heating predominant operating mode for winter (only for
RXS...H)

Automatic Cooling Dehumidification Heating

MODEMODEMODE

In automatic mode, the regulation autonomously selects between
heating and cooling operation when the unit is first turned on. A nominal
temperature of 24 °C is preset. The regulating range is between 22 °C
and 26 °C. This can still be increased or decreased with the ▲/▼ buttons
by 1° C.

MODE

AUTOMATIC

COOLING Mode

In cooling mode, the air in the room is cooled down to the set target
temperature. The desired room temperature is set with buttons ▲/▼ in
1 °C increments. If the room temperature is 0.5 °C above the selected
target temperature, then the indoor unit starts to cool down the air in
the room. If the temperature falls by approx. 1 °C below the adjusted
room temperature, then the regulation turns the cooling function off.
To protect the compressor, the regulation only turns the cooling on again
after a waiting period of 3 minutes.

MODE

COOLING
OPERATION

REMKO RXW

10

DEHUMIDIFICATION MODE

HEATING Mode

In dehumidification mode, the target temperature is set to 24 °C. Due
to the low temperature of the refrigerant, the dew point of the air on
the condenser is lower. The excess moisture in the air is condensed by
the vaporiser, the room is dehumidified. The fan speed is permanently
set to the lowest setting in order to achieve a maximum level of
dehumidification. The compressor switches on and off in intervals
between 17°C and 24°C.

MODE

In the heating mode, you can heat the room in spring or fall with the
RXS...H. The selected room temperature is set with buttons ▲/▼ in
1 °C increments. If the room temperature is 1 °C below the selected
target temperature, then the indoor unit starts to heat the air in the
room. If the temperature falls by approx. 1.5 °C below the selected room
temperature, then the regulation turns the heater function off. To protect
the compressor, the regulation only turns the heater on again after
a waiting period of 3 minutes.

DEHUMIFICATION
MODE

FAN Button

FIN Button

MODE

HEATING
OPERATION

The fan speed can be adjusted with this button. A selection can be made
between low, medium, high and automatic fan speed.

FANFANFAN FAN

With this button, the air discharge fins are individually adjusted.
A selection can be made between 5 positions and an oscillating function.

SWING Button

11

The oscillating function of the air discharge fins can be adjusted with this
button. This makes it possible to directly switch between an adjusted
position and the oscillating function. The air distribution in the room is
improved with the swing function.

SWINGSWINGSWING

SLEEP Button

TIMER Button

TIMER Buttons ON

With this button, a programming function is activated, which causes the
target temperature in the cooling mode to increase after one hour by
1 °C and after 2 hours by 2 °C. In heating mode, the target temperature
is decreased after one hour by 1 °C and after 2 hours by 2 °C. The unit is
automatically turned off after 8 hours.

SLEEPSLEEPSLEEP

The activation and switch-off time can be programmed with this button.
By pressign the button Timer on or Timer off, the timer is activated
and the time display turns off. The timer symbol for the switch-on/
off time will flash. The timer display on the indoor unit lights up. The
desired turn on or turn off time is set by pressing the buttons HR. and
MIN. After completed adjustment, the timer symbol blinks for another
30 seconds. When the programmed time has been reached, the device
is automatically turned on or off. If the indoor unit is automatically
switched on, then the mode, temperature and fan speed for the last
setting is reactivated. The turn on/off time can be prematurely cancelled
by pressing the appropriate timer button or the ON/OFF button. The
timer display on the indoor unit goes out.

TIMER Buttons OFF

Timer on HR/MIN 30 sec.

Timer off HR/MIN 30 sec.

REMKO RXW

12

TIMER Buttons ON/OFF

Manual air distribution

There are individually adjustable
fins for adjusting the horizontal air
distribution on the air discharge
side.

CAUTION

The regulation turns the unit on and off daily at the programmed time.
During operation, all settings and the timer symbol can be seen on the
display. During shut down, the display 0->1 and the Timer symbol can be
seen.

Unit On Unit Off

Manual air distribution

Example:

The regulation turns on at 10:20.
The unit is in operation until 05:00.

Moving interior parts such as
the fan have the potential to
cause injury during operation!
Only make adjustments after
swing operation has been
turned off.

Shift lever left

Shift lever right

Shutdown

13

Care and maintenance

Maintenance

Temporary Shutdown

1. Allow the indoor unit to run for
2 to 3 hours in air circulation
mode or in cooling mode at the
maximum temperature setting
in order to remove any residual
moisture from the unit.

2. Shut down the system using
the remote control.

3. Switch off the voltage supply
to the unit.

4. Check the unit for visible signs
of damage and clean it as
described in the chapter "Care
and maintenance".

Permanent shutdown

Ensure that equipment and
components are disposed of
accordance with local regulations,
e.g. through authorised disposal
and recycling specialists or at
collection points.

Contact REMKO GmbH & Co. KG
or your contract partner for a list
of specialist companies near you.

Regular care and observation
of some basic points will ensure
trouble-free operation and a long
service life.

CAUTION

Prior to performing any
work, ensure the equipment
is isolated from the voltage
supply and secured to prevent
accidental switch-on!

Care

■

Ensure the unit is protected
against dirt, mould and other
deposits.

■

Clean the indoor and outdoor
unit using a damp cloth. Do
not use any caustic, abrasive
or solvent-based cleaning
products. Do not use a jet of
water.

■

Clean the fins on the unit prior
to long shutdown periods.

Type of task

Checks / maintenance / inspection

■ It is recommended that

maintenance contract with
annual maintenance interval
with an appropriate specialist
company.

TIP

This ensures the operational
reliability of your equipment!

NOTE

The statutory regulations
require an annual sealing
test for the refrigerant circuit
in relation to the refrigerant
filling level. The inspection
and documentation is to be
carried out by corresponding
specialist engineers.

General

Measure voltage and current

Check fan is functioning correctly

Dirt on vaporiser

Check condensation drain

Test insulation

Check moving parts

Sealing test for refrigerant circuit

1) see note

Commissioning

Monthly

Six-monthly

• •

• •

• •

• •

• •

• •

• •

• •

Yearly

1)

REMKO RXW

14

Cleaning the housing

1. Disconnect the power supply to
the unit.

2. Open the air intake grill on the
front side and fold it upward.

3. Clean the grill and housing
using a soft, damp cloth.

4. Reconnect the power supply
again.

Air filter for indoor unit

Clean the air filter at intervals of
no more than 2 weeks. Reduce this
interval in case of heavily soiled air.

Cleaning the filter

1. Disconnect the supply voltage
to the equipment.

2. Open the front side of the unit
by folding the grill upward and
letting it engage (Fig. 1).

3. Lift the filter up slightly and pull
it out from underneath (Fig. 1).

4. Clean the filter with a regular
vacuum cleaner (Fig. 2).
To do so, turn the dirty side
upward.

5. Any dirt can also be removed
carefully with lukewarm water
and mild cleaning agents (Fig. 3).
To do so, turn the dirty side
downward.

6. If water is used, let the filter
dry out properly in air before
replacing it in the unit.

8. Close the front side as
described above but in reverse
order.

9. Switch the supply voltage back
on.

10.

Switch the unit back on.

Cleaning the condensation
pump (optional equipment)

An optional integrated or separate
condensation pump may be in the
indoor unit, which pumps out any
accumulated condensation into
higher positioned drains.

Observe the care and maintenance
guidelines in the separate
operating instruction manual.

7. Carefully insert the filter. Ensure
it locates correctly.

1 Fold up the guard 2 Clean with a vacuum cleaner

3

Cleaning with lukewarm water

Troubleshooting and customer service

15

The equipment and components are manufactured using state-of-the-art production methods and tested several
times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the
list below. For installations with an indoor unit and outdoor component, refer to the chapter "Troubleshooting
and customer service" in both manuals. Please inform your dealer if the unit is still not working correctly after all
the functional checks have been performed!

Malfunction

check Remedial measures

Power outage, undervoltage

Are all other electrical
installations functioning
correctly?

Check voltage and if necessary
wait before switching back on

The unit does not start
or switches itself off.

The unit does not
respond to the
remote control

Defective mains fuse
Main circuit breaker is open

Damaged mains cable

Waiting time after switch-on too
short

Temperature outside operating
range

Overvoltages due to
thunderstorms

Fault in external condensation
pump

Transmission distance too large /
Receiver faulty

Defective remote control

Receiver or transmitter unit
exposed to excessive solar
radiation

Electro-magnetic fields interfere
with transmission

Button on remote control
jammed / two buttons pressed
at same time

Batteries in remote control
depleted

Are all lighting circuits
functioning correctly?

Are all other electrical
installations functioning
correctly?

Is there a restart after approx. 5
minutes?

Are the fans for the indoor
unit and outdoor component
working?

Have there been any lighting
strikes in the area recently?

Did the pump turn off due to a
fault outage?

When pressing the button is
there a signal sound on the
indoor unit?

Is the outdoor component in
manual operation?

Is the function working if
shaded?

Is the function working when
turning off any sources of
interference?

Does the “Send” symbol appear
on the display?

Have new batteries been
inserted? Is the display
incomplete?

Replace mains fuse
Close main circuit breaker

Repair by a specialist

Schedule longer waiting periods

Note the temperature ranges of
the indoor unit and the outdoor
component

Turn the main fuse off and turn
it on again
Have it checked by a specialist

Check pump clean if necessary

Reduce the distance to less than
6 m or change position

Replace the remote control

Place the transmitter or receiver
unit in the shade

Signal is not transmitted
when interference sources are
operational

Release the button / only press
one button

Insert new batteries

Please note the continuation of this “Troubleshooting chart“ on the next page !

REMKO RXW

16

Fault Possible cause Check Remedial measures

The unit is running
with reduced or
without cooling or
heating output

Condensation output
on the unit

Filter is dirty / air inlet / outlet
opening is blocked by by debris

Doors and windows open /
heating or cooling load was
increased

Neither cooling nor heating
mode has been set

Fins of outdoor component are
blocked by debris

Leaking refrigerant circuit

Drain pipe of the collection
container blocked / damaged

Faulty external condensation
pump or float

Condensation has not drained
away and has collected in the
condensation pipe

Condensation does not drain off

Have the filters been cleaned? Clean the filters

Have there been any
constructional /
application-related changes?

Does the "cooling / heating"
symbol appear in the display?

Is the fan on the outdoor
component running are the fins
unobstructed?

Are there signs of frost on the
fins of the indoor unit?

Is unobstructed condensation
drainage ensured?

Is the condensation pan full
of water and the pump is not
working?

Is the condensation pipe routing
sloped downhill and is it clear?

Are the condensation pipes
unblocked and is there a steady fall?
Are the condensation pump and
float switch functioning correctly?

Close doors and windows /
install additional systems

Correct the settings for the unit

Check fan or winter regulation,
reduce air resistance

Repair by a specialist

Clean the drainage pipe and
collection container

Call out a specialist to replace
the pump

Route the condensation pipe
in a downhill slope or clean it if
necessary

The condensation pipe must have
a fall. If necessary, clean the pipe.
A faulty condensation pump and
float switch should be replaced.

Icing up of unit

Leaking refrigerant circuit

In conjunction with RXM:
Heating/automatic mode set

Are there signs of severe frost
on the large stop valve?

Check mode setting Set cooling mode

Repair by a specialist.

Problem display by blinker code

Display Cause Required action

E1 Sensor air circulation faulty / tripped Contact specialist dealer

E2 Sensor on vaporiser faulty / tripped Contact specialist dealer

E4

E5

E6 Bridge inner control line interrupted Check bridge plug

Cooling mode: No cooling output after 30 minutes
Heating mode: No heat output after 30 minutes

Cooling mode: Antifreeze protection has responded
Heating mode: Overheating protection has tripped

Contact specialist dealer

Contact specialist dealer

Installation instructions for qualified personnel

17

Important points prior to
installation

For installation of the entire
system, observe the operating
instructions of the indoor unit and
the outdoor unit.

■

Transport the unit in its original
packaging as close as possible
to the installation location. This
avoids transportation damage.

■

Check the contents of the
packaging for completeness
and check the unit for visible
transport damage.
Immediately notify any
deficiencies to the contractual
partner and forwarding agent.

■

Lift the unit at the corners
and not by the refrigerant or
condensation connections.

■

The refrigerant pipes
(injection and suction pipe),
valves and connections to make
them tight against vapour
diffusion. If necessary, also
insulate the condensation pipe.

■

Seal off open refrigerant pipes
with suitable caps or adhesive
strips to avoid the infiltration
of moisture and never kink or
compress the refrigerant pipes.

■

Only use the union nuts for the
refrigerant pipes included in
the delivery, and remove them
shortly before connecting the
refrigerant pipes.

■

Establish all electrical
connections in accordance with
the relevant DIN- and VDE
standards.

■

See electrical connection
diagram Ensure the electrical
cables are properly connected
to the terminals, otherwise
there is a risk of fire.

Installation material

The indoor unit is fastened using
4 threaded rods (provided by the
customer) over a wall brace.

Minimum clearances

Observe the minimum clearances
to allow access for maintenance
repair work and for optimum air
distribution.

Minimum clearances

120

120

200

All values in mm

120

1500

Connection variations

The following connection
variations for the refrigerant,
condensation and control lines can
be utilized.

Connection variations

■

Select an installation location
which allows air to freely
flow through the inlet and
outlet (see section "Minimum
clearances")

■

Do not install the unit in
the immediate vicinity of
devices with intensive thermal
radiation. Installation near
sources of thermal radiation
reduces the output of the unit.

Selection of the installation
location

The indoor unit is designed for
horizontal wall installation above
doors.
However, it can also be used in
the upper wall area (min. 1.75 m
above the floor).

1

2

3

1 Outlet on the wall, right
2 Outlet through the wall, right
3 Outlet through the wall, left
4 Outlet on the wall, left

4

REMKO RXW

18

Installation

NOTE

Installation should only be
performed by authorised
specialists.

Unit installation

The indoor unit is attached by
means of a wall bracket, under
consideration of air discharge side
located in the lower part.

1. Mark the mounting points
on the statically permissible
building sections according to
the dimensions of the unit.

2. If necessary, remove the break
out opening on the housing.

3. Connect the refrigerant
pipes, electrical cables and
condensation pipe to the indoor
unit as described below.

4 Horizontal alignment

The wall bracket for the unit must
be attached with suitable screws
and anchors.

Connection of refrigerant
pipes

The on-site connection of the
refrigerant pipes is made at the
rear of the unit.

If necessary, a reduction or
expansion needs to be installed on
the indoor unit.
These fittings are included as
standard with the indoor unit.

Once installed, the connections
should be insulated to make them
vapor diffusion proof.

CAUTION

The units are factory filled with
dry nitrogen to check for leaks.
The pressurised nitrogen is
released when loosening the
union nuts.

4. Hang the indoor unit onto the
wall bracket by tilting it back
slightly and by pressing the
bottom part of the unit against
the bracket.

5. Check again to ensure that the
unit is level (Bild 4).

Condensation connection

19

Electrical connection

Due to the dew point shortfall,
condensation forms on the
vaporiser during the cooling
operation on the indoor unit.

Below the vaporiser is a collection
tray, which must be connected to
a drain.

■

The condensation pipe should
have a fall of min. 2 %. (Fig. 5).
If necessary, fit vapour diffusion
proof insulation.

■

The condensation pipe from
the unit should run freely
into the drainage pipe. If the
condensation runs directly into
a sewer pipe, install a trap to
prevent any unpleasant odors.

■

When operating the unit at
outdoor temperatures below
+4 °C, ensure the condensation
pipe is laid to protect it against
frost. If necessary, install a pipe
heater.

A protected power supply cable
and asix-core (RXS) or a four­core (RXM) control cable should
be connected to the outdoor
component and indoor unit
respectively.

CAUTION

All electrical installation
work should be performed
by specialist contractors.
Isolate the voltage supply
when connecting the electrical
terminals.

■

We recommend to install
a main / repair switch on the
building near the indoor unit.

■

The terminal blocks for making
the connections are located at
the rear of the unit. When the
unit is installed, measurements
can be made from the front by
removing the cover.

■

If an optional condensation
pump is used in conjunction
with the unit, it may be
necessary to install an
additional relay with a higher
contact rating after the switch­off contact on the pump to
switch off the compressor.

Make the connection as follows:

1. Open the air intake grill.

2. Unfasten the cover on the right
side and at the bottom right
rear. (Fig. 6).

3. Connect the unit to the
control cable from the outdoor
component. See electrical
connection diagram. For series
RXW 681 IT, the terminal block
for the power supply as well
as for the control contacts is
behind the front cover.

4. Re-assemble the unit.

■

After completed routing, check
for unobstructed condensation
discharge and ensure that
a permanent seal is provided.

5

Condensation connection

Min. 2% drop

The condensation hose is designed
to be installed on the left side
(view from front).

6

Connecting the indoor unit

Cover

Front terminal block for
control line and power
supply from the outdoor unit

3
1
2

L
N

AC-N

FM

SM

EXF

4WV

AC-L
COMP

REMKO RXW

20

Electrical connection diagram

Connection RXS 261H to 681H

Indoor unit Mains cable

L

N

3

2

1

PE

front terminal block

Outdoor component

L

N

Control conductor

Control conductor

Control conductor

3

2

1

PE

Phase conductor

Neutral conductor

Compressor contactor

Reverse flow valve

Fan motor

Earth conductor

L1

N

PE

Connection RXM 226 to 435

L

N

3

PE

Control conductor

Outdoor component

L

Phase conductor

N

Neutral conductor

1

Compressor contactor

PE

Earth conductor

L1

PE

N

230 V~,
50 Hz,
L1 / N
/ PE

Indoor unit Mains cable

Electrical circuit diagram

230 V~,
50 Hz,
L1 / N
/ PE

Commissioning

NOTE

Commissioning should only be
performed by specially trained
personnel and documented
after the certificate has been
issued.

Observe the manuals
for the indoor unit and
outdoor component when
commissioning the entire
system.

Functional test for
cooling mode.

1. Switch the supply voltage on.

2. Use the remote control to
turn on the unit and select
the cooling mode, maximum
fan speed and lowest target
temperature.

RXW 261 to 681

3. Measure and record all
the required values in the

Vaporiser

fan motor

Swing motor

commissioning report and
check the safety functions.

4. Check the control system
for the unit using the

Phase conductor

Neutral conductor

Earth conductor

Compressor
Liquefier fan

Reverse flow valve

Display

Receiver

circuit board

functions described in the
chapter "Operation". Timer,
temperature setting, fan speeds
and changing to ventilation or
dehumidification mode.

5. Check the correct function
of the condensation pipe by
pouring distilled water into the
condensation tray.
A bottle with a spout is
recommended for pouring the

Colour code

Transformer

Sensor

Vaporiser

Sensor
Air circulation

water into the condensation

WH = white
BU = blue
BN = brown

tray.

21

Unit dimensions

Functional test for
heating mode
(only for RXS...H)

1. Switch the supply voltage on.

2. Use the remote control to
switch on the unit and select
the heating mode, maximum
fan speed and highest target
temperature.

3. Measure and record all
the required values in the
commissioning report and
check the safety functions.

4. Check the control system for
the unit using the functions
described in the chapter
"Operation".
Timer, temperature setting, fan
speeds.

RXW 261 / 351

275

RXW 521

275

RXW 681

320

790

930

1035

200

200

220

Final tasks

■

Re-fit all the dismantled parts.

■

Familiarize the operator with
the system.

NOTE

Check that the stop valves
and valve caps are tight after
carrying out any work on the
refrigerant circuit. If necessary,
use appropriate sealant
products.

RXW 261 / 351

110

RXW 521

130

RXW 681

107

360

520

107

360

520

115

All data in mm

130

We reserve the right to modify the dimensions and constructional design as part of the ongoing
technical development process.

560

REMKO RXW

22

Unit illustration RXW 261 to RXW 681

11

10

12

7

8

5

2

We reserve the right to modify the dimensions and constructional

design as part of the ongoing technical development process.

9

1

6

4

3

Spare parts list

No. Designation

1 Complete front face 1109400 1109413 1109426 1109439

2 Air filter, set 1109401 1109414 1109427 1109440

3 Board, display 1109402 1109415 1109428 1109441

4 Swing motor 1109403 1109416 1109429 1109442

5 Air outlet fins, set 1109404 1109417 1109430 1109443

6 Condensation tray 1109405 1109418 1109431 1109444

7 Vaporiser 1109406 1109419 1109432 1109445

8 Fan wheel 1109407 1109420 1109433 1109446

9 Fan motor 1109408 1109421 1109434 1109447

10 Control board 1109409 1109422 1109435 1109448

11 Transformer 1109410 1109423 1109436 1109449

12 IR remote control 1109411 1109424 1109437 1109450

Spare parts (not illustrated)

Sensor air circulation / sensor vaporiser 1109412 1109425 1109438 1109451

When ordering spare parts, please state the computerised part no., unit number and type (see identification plate)!

RXW 261 RXW 351 RXW 521 RXW 681

23

Technical data

Series RXW 261 RXW 351 RXW 521 RXW 681

Operating mode Wall unit for cooling and heating

Nominal cooling output

Nominal heating output

Energy efficiency class, cooling

Energy efficiency ratio EER

Energy efficiency class, heating

Coefficient of performance COP

1)

2)

kW 2,96 4,24 6,31 7,72

1)

1)

2)

2)

Operating range (room volume), approx. m³ 80 110 160 230

Adjustment rangeroom temperature °C +16 to +31

Working range °C +15 to +31

Refrigerant R 410A

Operating pressure max. / per cooling circuit

Air flow rate per stage m³/h 320/370/420 380/450/520 600/700/800 800/900/1000

Noise output per stage

3)

Voltage supply V/Hz 230 / 1~ / 50

kW 2,69 3,59 5,27 6,84

A A B B

3,32 3,23 3,12 3,05

A A C C

3,70 3,66 3,29 3,24

4)

kPa 4200 / 4200

dB(A) 30/34/38 32/36/40 35/39/43 36/40/45

Protection degree IP X0

Nom. electrical power consumption, cooling 1)kW 0,03 0,04 0,04 0,05

kW 0,03 0,04 0,04 0,05

Nom. electrical power consumption, heating
Electr. nominal power consumption cooling

Electr. nominal power consumption heating

Refrigerant connection, injection pipe

Refrigerant connection, suction pipe

2)

1)

2)

Inches (mm)

Inches (mm)

A 0,15 0,19 0,23 0,30

A 0,15 0,19 0,23 0,30

1/4 (6,35) 3/8 (9,52)

3/8 (9,52) 1/2 (12,70) 5/8 (15,90)

Condensation connection mm 17 17 17 17

Dimensions Height mm 275 275 275 320

Width mm 790 790 930 1035

Depth mm 200 200 200 220

Weight kg 8,0 10,0 12,0 16,0

Serial number 820... 821... 822... 823...

Computerised part no. 1619120 1619130 1619140 1619150

1) Air intake temp. TK 27°C / FK 19°C, outdoor temp. TK 35°C / FK 24°C, max. air volume, 5m pipe length in combination with RXS 261H - 681H

2) Air intake temperature TK 20°C outdoor temperature TK 7°C, FK 6°C, max. air volume, 5m pipe length in combination with RXS 261H-1200H

3) Distance 1 m free air

4) Contains greenhouse gas according to Kyoto protocol

REMKO ACROSS EUROPE

… and in your area!
Profit from our experience and advice

REMKO GmbH & Co. KG.

Klima- und Wärmetechnik

Im Seelenkamp 12 · 32791 Lage

Postfach 1827 · 32777 Lage

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E-mail [email protected]

Internet www.remko.de

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Consultancy

Intensive training means

our consultants are always

up-to-date with the latest

developments. This has given

us the reputation of being more

than just a good and reliable

supplier:

REMKO, a partner who helps

solve problems.

Sales

REMKO not only has a

well-established sales network

at home and abroad, it also

employs highly trained sales

specialists.

REMKO - Our field staff are

more than just salesmen: above

all, they must advise our clients

in the areas of air conditioning

and heating technology.

Customer service

Our equipment is precise and

reliable. However, should a fault

should occur REMKO customer

service is quickly at your side.

Our comprehensive network of

experienced dealers guarantees

quick and reliable service.

Subject to technical modifications, no responsibility taken for the correctness of information!