REMKO RWT Series User manual

Operating and
installation instructions
Read the instructions prior to performing any task!
REMKO RWT series
RWT 355 DC, RWT 525 DC
Wall chests for cooling and heating
0337-2023-03 Edition 1, en_GB

R32
Refrigerant
Translation of the original
Read these operating instructions carefully before commis-
sioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or mis-
prints!

Table of contents
1 Safety and usage instructions............................................................................................................. 5
1.1 General safety notes....................................................................................................................... 5
1.2 Identification of notes...................................................................................................................... 5
1.3 Personnel qualifications.................................................................................................................. 5
1.4 Dangers of failure to observe the safety notes................................................................................ 5
1.5 Safety-conscious working............................................................................................................... 6
1.6 Safety instructions for the operator................................................................................................. 6
1.7 Safety notes for installation, maintenance and inspection ............................................................. 6
1.8 Unauthorised modification and changes......................................................................................... 7
1.9 Intended use................................................................................................................................... 7
1.10 Warranty........................................................................................................................................ 7
1.11 Transport and packaging............................................................................................................... 7
1.12 Environmental protection and recycling........................................................................................ 8
2 Technical data........................................................................................................................................ 9
2.1 Unit data.......................................................................................................................................... 9
2.2 Unit dimensions, outdoor unit........................................................................................................ 12
2.3 Unit dimensions............................................................................................................................. 12
3 Design and function............................................................................................................................ 13
4Operation............................................................................................................................................. 14
4.1 General notes................................................................................................................................ 14
4.2 Indicators on indoor unit................................................................................................................ 15
4.3 Manual air distribution................................................................................................................... 16
4.4 Keys on the remote control........................................................................................................... 17
5 Installation instructions for qualified personnel.............................................................................. 25
5.1 Important notes prior to installation............................................................................................... 25
5.2 Wall openings................................................................................................................................ 25
5.3 Installation materials..................................................................................................................... 25
5.4 Selection of installation location ................................................................................................... 26
5.5 Minimum clearances..................................................................................................................... 27
5.6 Oil return measures....................................................................................................................... 28
5.7 Connection variants...................................................................................................................... 29
5.8 Dimensions of rear of unit............................................................................................................. 30
6 Installation........................................................................................................................................... 31
6.1 Unit installation.............................................................................................................................. 31
6.2 Connection of refrigerant piping.................................................................................................... 31
6.3 Leak testing................................................................................................................................... 33
6.4 Adding refrigerant.......................................................................................................................... 34
7 Condensate drainage connection and safe drainage...................................................................... 34
8 Electrical wiring................................................................................................................................... 36
8.1 General connection and safety instructions.................................................................................. 36
8.2 Connecting the indoor unit............................................................................................................ 36
8.3 Outdoor unit connection................................................................................................................ 42
8.4 Electrical wiring diagram............................................................................................................... 42
8.5 Electrical drawings........................................................................................................................ 44
9 Before commissioning....................................................................................................................... 46
10 Commissioning................................................................................................................................... 46
3

11 Shutdown............................................................................................................................................. 47
12 Troubleshooting and customer service............................................................................................ 48
13 Care and maintenance........................................................................................................................ 51
14 Exploded view and spare parts lists................................................................................................. 53
14.1 Exploded view - Indoor unit......................................................................................................... 53
14.2 Spare parts list - Indoor unit........................................................................................................ 54
14.3 Exploded view - Outdoor unit RWT 355 DC................................................................................ 55
14.4 Spare parts list - Outdoor unit RWT 355 DC............................................................................... 56
14.5 Exploded view - Outdoor unit RWT 525 DC................................................................................ 57
14.6 Spare parts list - Outdoor unit RWT 525 DC............................................................................... 58
15 Index..................................................................................................................................................... 59
REMKO RWT series
4

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units or their components for the
first time. It provides useful tips and notes such as
hazard warnings to prevent injury and material
damage. Failure to follow the directions in this
manual can endanger persons, the environment
and the equipment itself or its components and will
void any claims for liability.
Store this manual and the information required for
the operation of this system (e.g. refrigerant data-
sheet) in the vicinity of the unit.
The refrigerant used in the system is flammable. If
applicable, observe the local safety conditions.
Warning of inflammable substances!
1.2 Identification of notes
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by sym-
bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or mate-
rial and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recom-
mendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, opera-
tion, maintenance, inspection and installation must
be able to demonstrate that they hold a qualifica-
tion which proves their ability to undertake the
work.
1.4 Dangers of failure to observe
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
5

In particular, failure to observe the safety notes
may pose the following risks:
nThe failure of important unit functions.
nThe failure of prescribed methods of mainte-
nance and repair.
nDanger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
1.6 Safety instructions
for the operator
The operational safety of the units and compo-
nents is only assured providing they are used as
intended and in a fully assembled state.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nProtective covers (grills) over moving parts
must not be removed from units that are in
operation.
nDo not operate units or components with
obvious defects or signs of damage.
nContact with equipment parts or components
can lead to burns or injury.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.
nRooms in which refrigerant may escape shall
be adequately aerated and ventilated. Other-
wise, a risk of suffocation or fire exists.
nDo not leave children unsupervised when close
to the system.
nCommissioning must be performed by author-
ised specialists exclusively. Deficient commis-
sioning may lead to water leaks, electric
shocks or fire. Commissioning must take place
as described in the user manual.
nOnly instruct authorised specialist personnel to
perform maintenance or servicing.
nThe system is filled with a flammable refrig-
erant. Never thaw any frozen unit components
independently!
nDo not operate any further devices that pro-
duce high heat or naked flames in the same
room.
nAll housing parts and unit openings, e.g. air
inlets and outlets, must be kept clear.
nThe units must be inspected by a service tech-
nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.
1.7 Safety notes for installation,
maintenance and inspection
nThe refrigerant R32 used in the system is flam-
mable. If applicable, observe the local safety
conditions.
nKeep the cooling circuit clear of other gases
and foreign substances. Only fill the cooling cir-
cuit with the refrigerant R32.
nOnly use the accessories, components and
appropriately marked parts provided. The use
of non-standardised components may result in
water leaks, electric shocks and fire.
nOnly install and store the units in rooms larger
than 4 m2. With a failure to comply, leaks may
result in the room filling with a flammable mix-
ture!
The minimum room size of 4 m2 required for
installation and storage pertains to the basic fill
quantity of the unit. This varies according to the
installation type and total fill quantity of the
system. The calculation must take place in
accordance with valid DIN standards. Make
sure that the installation site is suitable for safe
unit operation.
nOnly mount the unit components on structurally
suitable brickwork.
nThe units must not be installed in rooms in
which further devices that produce heat are
operated (heaters, open hearths).
nMake sure the installation room is sufficiently
ventilated.
nInterventions in the cooling circuit are only pos-
sible after completely draining the refrigerant.
Never solder or grind unit components!
nNote that refrigerant may be odourless.
nNever operate the air conditioning unit in a
humid room, such as a bathroom or laundry
room. If the humidity is too high, this can cause
short circuits on electrical parts.
nThe product must be correctly earthed at all
times, otherwise it may induce electric shocks.
nAttach the condensate drain as described in
the operating manual. The inadequate
drainage of condensate can lead to water
damage in your apartment.
nAll persons who intervene in the cooling circuit
must hold a valid certificate from the chamber
of industry and commerce, which confirms their
ability to work with refrigerant.
REMKO RWT series
6

nAppropriate hazard prevention measures must
be taken to prevent risks to people when per-
forming installation, repair, maintenance or
cleaning work on the units.
nThe setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
nRegional regulations and laws as well as the
Water Ecology Act must be observed.
nThe power supply should be adapted to the
requirements of the units.
nUnits may only be mounted at the points pro-
vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.
nThe units and components should not be oper-
ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.
nThe units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
nSafety devices may not be modified or
bypassed.
nThe connection of the indoor unit must be
established as a permanent connection; a
detachable, reusable connection is not permis-
sible.
1.8 Unauthorised modification
and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
1.9 Intended use
Depending on the model, the units and the addi-
tional fittings with which they are equipped are only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed space.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no lia-
bility for damages arising from a non-intended use.
The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
The threshold values specified in the technical
data must not be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative com-
plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "Gen-
eral business and delivery conditions". Further-
more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.11 Transport and packaging
The devices are supplied in a sturdy shipping con-
tainer. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
7

1.12 Environmental protection
and recycling
Disposal of packaging
All products are packed for transport in environ-
mentally friendly materials. Make a valuable contri-
bution to reducing waste and sustaining raw mate-
rials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufac-
ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis-
posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy-
cling specialists or at collection points.
REMKO RWT series
8

2 Technical data
2.1 Unit data
Series RWT 355 DC RWT 525 DC
Operating mode Inverter wall chest room air conditioner
combination for cooling and heating
Nominal cooling output 1) kW 3.5
(0.8-4.2)
5.0
(2.6-5.6)
Energy efficiency ratio SEER 1) 7.3 6.7
Rated power consumption, electrical cooling 1) kW 1.0 1.5
Rated elec. curr. consump., cooling 1) A 4.5 6.7
Power consumption, annual, QCE 3) kWh 168 261
Energy efficiency ratio, cooling 1) A++
Nominal heat capacity 2) kW 3.8 (0.4-4.7) 5.3 (2.2-6.3)
Energy efficiency ratio SCOP 4) 5.5 5.0
Rated power consumption, electrical heating 2) kW 1.0 1.4
Rated elec. curr. consump., heating 2) A 4.43 6.40
Power consumption, annual, QHE 3) kWh 910 1414
Energy efficiency ratio, heating 2) A+++ A++
Max. power consumption kW 1.35 1.95
Max. current consumption A 5.95 8.5
EDP no. 1623420 1623425
1) Air inlet temp. TK 27 °C/FK 19 °C, outside temperature TK 35 °C, FK 24 °C, max. air flow volume,
5 m pipe length
2) Air inlet temp. TK 20 °C, outside temperature TK 7 °C, FK 6 °C, max. air flow volume, 5 m pipe length
3) The specified value is based on results from standard testing.
The actual consumption depends on the use and location of the unit
4) The specified value is based on the average heating period
9

Associated indoor unit / series RWT 355 DC IT RWT 525 DC IT
Power supply V/Ph/Hz 230/1~/50
Application area (room volume), approx. m3110 160
Adjustment range, room temperature °C +17 to +30
Relative air humidity adjustment range °C +35 to +85
Operating range °C/r.H.% +16 to +30 / 35-65
Air flow volume per stage m3/h 490/580/650 600/690/780
Sound pressure level per stage 5) dB (A) 27/34/37 32/38/41
Enclosure class IP IPX0
Refrigerant connection, liquid pipe Inches
(mm) 1/4 (6.35) 3/8 (9.52)
Refrigerant connection, suction pipe Inches
(mm) 1/4 (6.35) 1/2 (12.7)
Condensate drainage connection mm 16
Dimensions: Height / width / depth mm 621/793/200
Weight kg 14.9
EDP no. 1623422 1623427
5) At distance of 1 m in the open air; specified values are maximum values
REMKO RWT series
10

Associated outdoor unit / series RWT 355 DC AT RWT 525 DC AT
Power supply V/Ph/Hz 230/1~/50
Operating range, cooling °C +5 to +50 7)
Operating range, heating °C +5 to +24 7)
Air flow rate, max. m3/h 2200 2100
Enclosure class IP IP24
Sound power level max. dB (A) 62 63
Sound pressure level 5) dB (A) 54 55
Refrigerant 6) R32
Refrigerant, basic quantity kg 0.71 1.15
CO2 equivalent t 0.48 0.74
Operating pressure, max. kPa 4300/1700
Refrigerant, additional quantity >5m g/m 15
Refrigerant piping, max. length m 25 30
Refrigerant piping, max. height m 10 20
Refrigerant connection, liquid pipe Inches
(mm) 1/4 (6.35)
Refrigerant connection, suction pipe Inches
(mm) 3/8 (9.52) 1/2 (12.7)
Dimensions: mm 555/854/314 554/874/346
Weight kg 26.6 32.5
EDP no. 1623421 1623426
5) At distance of 1 m in the open air; specified values are maximum values
6) Contains greenhouse gas per the Kyoto protocol, GWP 675 (for further information, see chapter "Adding refrigerant")
7) Can be expanded up to -15 °C with optional winter fan speed control
11

2.2 Unit dimensions, outdoor unit
D
E
B
AC
Fig. 1: Dimensions RWT 355-525 DC AT (all measurements in mm)
Measurements (mm) A B C D E
RWT 355 DC 839 555 314 452 286
RWT 525 DC 874 554 346 511 317
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
2.3 Unit dimensions
621
793 200
Fig. 2: Unit dimensions RWT 355-525 DC IT (all measurements in mm)
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
REMKO RWT series
12

3 Design and function
Unit description
The RWT 355-525 DC room air conditioners have
an RWT...AT outdoor unit as well as an RWT...IT
indoor unit.
In cooling mode, the outdoor unit serves to output
the heat extracted by the indoor unit from the room
being cooled. In heating mode, the heat taken up
by the outdoor unit can be discharged by the
indoor unit into the room to be heated. In both
operating modes, the output produced by the com-
pressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conven-
tional split systems and also reduces noise emis-
sions to a particularly low level. The outdoor unit
can be installed in an outdoor area or, providing
that certain requirements are met, an indoor area.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and throttle element. The outdoor
unit is controlled by the regulation of the indoor
unit.
The indoor unit is designed for indoor areas, for
suspended ceilings with Euroraster dimensions.
The cassette is hidden behind the suspended
ceiling, only its cover is visible. It is operated by an
infrared remote control. The indoor unit consists of
a fin evaporator, evaporator fan, regulation system
and condensate tray with condensate pump.
Floor consoles, wall consoles, refrigerant piping
and winter fan speed control are available as
accessories.
Refrigerant piping is used to connect the indoor
unit to the outdoor unit.
B
A
4
5
6
1
2
3
7
8
9
3
Fig. 3: System layout
A: Outdoor area
B: Indoor area
1: Indoor unit
2: Outdoor unit
3: Condensate drainage line
4: Condenser fan
5: Power supply cable
6: Shut-off valve
7: Suction pipe
8: Control line
9: Injection pipe
M
M
T E
P S H
T 1
T 2
T3
T 5
PSL
M1 M3
T2
T3
T4
T5
M2
PSL
PSH
T1
V1
EEV
FLT
1
B
A
Fig. 4: Cooling cycle schematic
A: Outdoor area
B: Indoor area
1: RWT
M1: Condenser fan
M2: Compressor
M3: Evaporator fan IT
V1: Changeover valve C/H
EEV: Elec. Expansion valve
FLT: Filter
OEL: Oil return line
PSH: High pressure switch AT
PSL: Low pressure switch AT
T1: Probe, heat gas AT
T2: Probe, air inlet AT
T3: Probe, condenser AT
T4: Probe, air inlet IT
T5: Probe, evaporator IT
13

4 Operation
4.1 General notes
The indoor unit is easily operated using the
standard infrared remote control. 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 man-
ually operated.
Manual mode
The indoor unit can also be started manually. To do
this, after opening the front panel (see Fig. 5),
press the AUTO/COOL key next to the display
using a paper clip (see Fig. 6).
The following settings apply for manual operation:
Pressing once: Automatic mode 24 °C,
Pressing twice: Test mode cooling, after 30
minutes the unit switches to automatic mode with a
setpoint of 24 °C.
Pressing three times: Unit OFF
OFF AUTO COOL
1x 1x 1x
Fig. 5: Open the air inlet grille
1
Fig. 6: Activating manual mode
1: “AUTO/COOL” key
Infrared remote control
The infrared remote control sends the programmed
settings a distance of up to 6 m to the receiver of
the indoor unit. Data will only be received correctly
if the remote control is pointed at the receiver and
no objects are obstructing the transmission path.
Two AAA batteries must be inserted into the
remote control in preparation. To do so, remove
the flap from the battery compartment (see Fig. 8)
and insert the batteries the correct way around
(see markings). Removing the batteries causes all
stored data to be lost. The remote control then
reverts to the default settings.
max. 6 m
Mode
Swing
Boost LED
OK
SET
Humidity
Fig. 7: Maximum distance
REMKO RWT series
14

Fig. 8: Inserting the batteries
Alarms are indicated by a code (see chapter
Troubleshooting and customer service).
NOTICE!
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 longer periods.
Help save on energy consumption in stand-by
mode! If the device, system or component is not
in use, we recommend disconnecting the power
supply. Components with a safety function is
excluded from our recommendation!
Operation by means of an additional wired
remote control or central regulation
The wired remote control, type KFB-3, can be con-
nected to the devices. The connection to the
indoor units is made ready to plug in (see chapter
“Electrical wiring”).
Furthermore, the SmartControl Touch SC-1
(Smart-Com) central regulation can be connected.
(See “Electrical wiring” chapter).
Operation via the REMKO Smart web portal or
REMKO Smart Control app
The units can be controlled with a connected SC-1
(Smart-Com) or a plugged-in WIFI stick via the
REMKO Smart web portal or via the REMKO
Smart-Control app. For more information on con-
necting to the indoor unit, see the chapter “Elec-
trical wiring”.
4.2 Indicators on indoor unit
Indicator display
1 2 3
4
Fig. 9: Indicator display
1: Segment display
2: ECO display
3: not available
4: not available
15

4.3 Manual air distribution
Setting the air distribution
The vertical air control slats can be moved to the
left and right by hand (see Fig. 10). An automatic
swing function is also available for horizontal air
distribution (see Chapter “Keys on the remote con-
trol”).
Fig. 10: Setting the air distribution
Setting of the air outlet
If desired, the bottom air outlet of the unit can be
deactivated. The air is then only blown out through
the top air outlet. Proceed as follows to change the
settings:
1. Disconnect the unit from the power supply
and then restore it.
2. Open the air inlet grille (see Fig. 11)
3. Press and hold the discharge direction selec-
tion button for 5 seconds within 10 minutes
after the power supply is restored.
4. After successful setting, the display shows
the status of the bottom air outlet slat (on =
open, off = closed).
5. Close the air inlet grille.
Fig. 11: Open the air inlet grille
1
Fig. 12: Blow-out direction button
1: Blow-out direction button
REMKO RWT series
16

4.4 Keys on the remote control
Mode
Swing
Boost LED
OK
SET
Humidity
11
7
10
12
13
1
4
3
6
2
5
8
9
14
Fig. 13: Keys on the remote control
1
“On/Off” key
Press this key to switch the air conditioning unit on
and off.
2
“Arrow up” temperature key
Increases the temperature setpoint in 0.5 °C incre-
ments up to the maximum setting value of 30 °C.
3
"SET" key
Cycles through the various additional functions at
the top of the screen.
4
"Swing" key
Pressing briefly starts and stops the horizontal slat
movement.
5
"Fan speed" key
Switches between the different fan speeds in the
following order:
AUTO Þ20% Þ40% Þ60% Þ80% Þ100% Þ...
The fan speed can also be adjusted in 1% steps
with the "Arrow up" and "Arrow down" keys.
Pressing and holding the key activates the silence
function.
6
"Turbo" key
Activates or deactivates the turbo function to reach
the setpoint as quickly as possible.
7
"Mode" key
Switches between the available operating modes
in the following order:
AUTO Þ COOL Þ DRY Þ HEAT Þ FAN Þ...
AUTO: Automatic mode
COOL: Cooling
DRY: Dehumidification
HEAT: Heating
FAN: Recirculation mode
8
"Airflow redirection" key
Activates the air deflection function where the air
outlet slats are adjusted to guide the airflow along
the wall. This prevents people in the room from
being hit by the airflow and increases comfort.
9
"OK" key
Activates or deactivates a previously selected
additional function.
10
“Timer” key
Activates or deactivates the switch-on or switch-off
delay.
11
“Arrow down” temperature key
Reduces the temperature setpoint in 0.5 °C incre-
ments down to the minimum setpoint of 16 °C.
17

12
"eco gear" key
Switches between the available energy-saving
functions in the following order:
eco Þ gear 75 % Þ gear 50 % Þ OFF Þ eco ...
eco:
the setpoint is raised to 24 °C and the fan speed is
set to automatic. If the setpoint is higher than 24°C
before the eco function is activated, the setpoint is
not changed.
If a setpoint of < 24 °C is set, the eco function is
deactivated.
gear 75 %:
inducts the power consumption to max. 75 %.
gear 50 %:
inducts the power consumption to max. 50%
13
"Humidity" key
Switches the control variable from room tempera-
ture to relative humidity in "Dehumidification" oper-
ating mode.
14
"LED" key
Enables switching on/off the unit lighting and the
signal tones (depending on the unit).
Indicators on the LCD
10
6
1
2
3
4
5
7 8 9
11
12
13
14
Fig. 14: Indicators on the LCD
1
Additional functions
Breathe Away
Self clean
Bio Clean
Sleep
Follow me
Not available
2
Operating mode
Indicates the active operating mode.
3
Data transmission
Appears when data is transmitted from the infrared
remote control to the indoor unit.
4
Timer
Displays the corresponding symbol when the
switch-on delay (ON) or switch-off delay (OFF) is
activated.
5
Silence
Appears when the silence function is active.
6
Horizontal swing function
Shows the position or the activated swing function
of the horizontal swing slat.
7
Vertical swing function
Displays the position or the activated swing func-
tion of the vertical swing slats.
8
Not available
9
Turbo mode
Appears when turbo mode is activated.
10
Battery indicator
Indicates the remaining capacity of the remote
control battery.
11
eco gear
Appears when the eco gear function is activated.
REMKO RWT series
18

12
Key lock
Appears when the remote control key lock is
active.
13
Temperature indicators
Displays the setpoint for the temperature setting
(16 °C - 30 °C) or the relative humidity (35 % - 85
%).
14
Fan speed symbol
Displays the selected air speed. If the “Auto” or
“Dehumidify” operating mode is selected, the
“Auto” fan speed is automatically activated.
The illustration of the LCD with all of the sym-
bols present is only intended to provide a
clearer overview. During operation, only those
symbols relevant to the respective functions
appear on the display.
Key functions
"Auto" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
The operating mode indicator on the display of the
indoor unit begins to flash.
1. Press the "ON/OFF" key [1] to switch on the
air conditioning unit.
2. Press the "MODE" key [2] to select "Auto"
mode.
3. Press the "Arrow up / Arrow down" key [3]
to set the desired temperature. The tempera-
ture can be set to between 16 °C - 30 °C, in
increments of 1 °C.
Mode
Swing
Boost LED
OK
SET
Humidity
1
2
3
Fig. 15: "Auto" mode
19

"Cooling", "Heating" and "Recirculation" mode
1. Press the "ON/OFF" key [1] to switch on the
air conditioning unit.
2. Press the "MODE" key [2] to select
"Cooling", "Heating" or "Recirculation" mode.
3. Press the "Arrow up / Arrow down" key [3]
to set the desired temperature. The tempera-
ture can be set to between 16 °C - 30 °C, in
increments of 0.5 °C. (only in heating and
cooling operating modes).
4. Press the "FAN" key [4] to set the desired
fan stage.
Mode
Swing
Boost LED
OK
SET
Humidity
1
2
3
4
Fig. 16: "Cooling", "Heating" and "Recirculation"
mode
"Dehumidification" mode
1. Press the "ON/OFF" key [1] to switch on the
air conditioning unit.
2. Press the "MODE" key [2] to select "Dehu-
midification" mode.
3. Press the "Humidity" key [4] to set the unit
of the controlled variable to relative humidity
(RH).
4. Press the "Arrow up / Arrow down" key [3]
to set the desired relative humidity. The set-
point can be adjusted between 35 and 85 %
in 5 % increments.
Mode
Swing
Boost LED
OK
SET
Humidity
1
2
3
4
Fig. 17: "Dehumidification" mode
In the “Dehumidification” mode, manual selec-
tion of the fan speed is not possible! Please
note that temperature pre-selection is not pos-
sible and the dehumidified room can cool dra-
matically!
REMKO RWT series
20