Page 1
Operating and
installation instructions
REMKO KWT series
Monobloc air conditioners
Wall-mounted units without an outdoor unit for cooling and
heating
KWT 180 DC, KWT 240 DC, KWT 300 DC
0330-2023-01 Edition 1, en_GB
Read the instructions prior to performing any task!
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R32
R290
Read these operating instructions carefully before commissioning / 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 misprints!
R410A
Refrigerant
Refrigerant
Refrigerant
Translation of the original
Page 3
Table of contents
1 Safety and usage instructions............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Additional safety notes when handling refrigerant R290 and R32.................................................. 4
1.3 Identification of notes...................................................................................................................... 5
1.4 Personnel qualifications.................................................................................................................. 5
1.5 Dangers of failure to observe the safety notes................................................................................ 5
1.6 Safety-conscious working............................................................................................................... 5
1.7 Safety notes for the operator........................................................................................................... 6
1.8 Safety notes for installation, maintenance and inspection.............................................................. 6
1.9 Unauthorised modification and changes......................................................................................... 6
1.10 Intended use................................................................................................................................. 6
1.11 Warranty........................................................................................................................................ 6
1.12 Transport and packaging.............................................................................................................. 7
1.13 Environmental protection and recycling........................................................................................ 7
2 Technical data........................................................................................................................................ 8
2.1 Unit data.......................................................................................................................................... 8
2.2 Unit dimensions............................................................................................................................... 9
2.3 Scope of delivery........................................................................................................................... 10
3 Design and function............................................................................................................................ 10
3.1 Unit description............................................................................................................................. 10
4 Operation............................................................................................................................................. 11
5 Assembly and installation.................................................................................................................. 14
5.1 Important notes prior to installation............................................................................................... 14
5.2 Minimum clearances..................................................................................................................... 14
5.3 Installation materials..................................................................................................................... 14
5.4 Installation..................................................................................................................................... 15
5.5 Condensate removal..................................................................................................................... 20
6 Electrical wiring................................................................................................................................... 21
7 Commissioning................................................................................................................................... 22
8 Troubleshooting and customer service............................................................................................ 23
9 Care and maintenance........................................................................................................................ 25
10 Shutdown............................................................................................................................................. 27
11 Exploded view and spare parts lists................................................................................................. 28
11.1 View of the unit KWT 180 DC ..................................................................................................... 28
11.2 Spare parts list KWT 180 DC ..................................................................................................... 29
11.3 View of the unit KWT 240 DC / KWT 300 DC............................................................................. 31
11.4 Spare parts list KWT 240 DC / KWT 300 DC.............................................................................. 32
12 Index..................................................................................................................................................... 34
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REMKO KWT series
1 Safety and
usage instructions
1.1 General safety notes
n Carefully read the manual before commis-
sioning 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.
n Store this manual and the information required
for the operation of this system (e.g. refrigerant
datasheet) in the vicinity of the units.
n This unit may only be installed and operated as
described in this manual.
n Independent conversion and/or modification of
any kind is strictly prohibited.
n National regulations in connection with installa-
tion must be observed.
n Children must not be left unsupervised when
close to the unit.
n For safety reasons, people with mental, phys-
ical or other health limitations must not operate
this unit unattended.
n The unit is not permitted to be operated with
damaged cables. The unit must be repaired by
a specialist immediately.
n The unit may only be operated via a power
supply with grounding.
n The use of extension cables is not recom-
mended.
n The air filter must be cleaned at intervals of no
more than 2 weeks.
n The unit is not permitted to be operated in the
vicinity of heat sources.
n The unit must be transported upright. Residue
from the condensate must be drained off
before transport. The unit must be stood
upright for 1 hour prior to commissioning.
n Combustible substances and pressure con-
tainers must be kept at least 50 cm from the
unit.
n The unit must not be stored and operated in
rooms with oil, gas or sulphur.
n The unit must always be switched off with the
on/off switch.
n Do not place anything on the device in partic-
ular heavy or hot objects.
n Repairs may only be carried out by authorised
and certified specialist personnel.
n The unit must not be covered with plastic
sheets.
n This unit must be disposed of professionally in
accordance with environmental protection.
n The safety notes in regards to the room sizes
and the flammability of the refrigerant must not
be removed from the machine.
n The units may only be operated in well venti-
lated areas.
n The unit can be used by children 8 years and
up and by persons without physical, mental or
other health limitations if this knowledge has
been obtained via the necessary safety notes.
n Children must never play with the unit.
n Cleaning the units must not be carried out by
children without parental/guardian supervision.
1.2 Additional safety notes when handling refrigerant R290 and R32
Warning of inflammable substances!
The refrigerant used in the system is flammable. If
applicable, observe the local safety conditions.
n The units contain 0.149 kg of refrigerant R290
depending on the unit type.
n The units must not be burned, drilled or
pierced.
n Only use cleaning agents which have been
approved by the manufacturer for cleaning.
n The unit must never be operated in rooms with
naked flames (e.g. gas heaters, open fireplaces, etc.).
n Refrigerant circuit components must not be
deformed.
n The contained refrigerant R290 is colourless
and odourless.
n The accumulation of refrigerant due to leak-
ages can lead to a fire and explosions in rooms
which are too small due to the development of
heat or ignition sources.
n The units must be stored carefully. Mechanical
damage must be avoided.
n Intervention in the refrigeration circuit may only
be done by certified specialist personnel taking
into account the safety notes of the manufacturer.
n Maintenance and repairs may only be carried
out by authorised personnel which have the
corresponding knowledge in regards to flammable refrigerant.
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WARNING!
Do not use anything other than the agent recommended by the manufacturer to speed up a
possible defrosting process or to clean the
units. The unit may only be operated and stored
in rooms where there are no devices with
potential ignition sources. Note that leaking
refrigerant is colourless and odourless. The unit
must not be burned or pierced!
1.3 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 symbols. 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.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or material 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 recommendations as well as information for efficient
and fault-free operation.
1.4 Personnel qualifications
Personnel responsible for commissioning, operation, maintenance, inspection and installation must
be able to demonstrate that they hold a qualification which proves their ability to undertake the
work.
1.5 Dangers of failure to observe
the safety notes
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.
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.
In particular, failure to observe the safety notes
may pose the following risks:
n The failure of important unit functions.
n The failure of prescribed methods of mainte-
nance and repair.
n Danger to people on account of electrical and
mechanical effects.
1.6 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.
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REMKO KWT series
1.7 Safety notes for the operator
The operational safety of the units and components is only assured providing they are used as
intended and in a fully assembled state.
n The units and components may only be set up,
installed and maintained by qualified personnel.
n Protective covers (grille) over moving parts
must not be removed from units that are in
operation.
n Do not operate units or components with
obvious defects or signs of damage.
n Contact with certain unit parts or components
may lead to burns or injury.
n The units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
n Spaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
n All housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
n The units must be inspected by a service tech-
nician at least once annually. Visual inspections and cleaning may be performed by the
operator when the units are disconnected from
the mains.
1.8 Safety notes for installation, maintenance and inspection
n Appropriate hazard prevention measures must
be taken to prevent risks to people when performing installation, repair, maintenance or
cleaning work on the units.
n The 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.
n Local regulations and laws such as Water
Ecology Act must be observed.
n The power supply should be adapted to the
requirements of the units.
n Units 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.
n Mobile units must be set up securely on suit-
able surfaces and in an upright position. Stationary units must be permanently installed for
operation.
n The units and components should not be oper-
ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.
n The units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
n Safety devices must not be altered or
bypassed.
1.9 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.
1.10 Intended use
Depending on the model, the units and the additional 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 liability 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.
1.11 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative complete 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 "General business and delivery conditions". Furthermore, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
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1.12 Transport and packaging
The devices are supplied in a sturdy shipping container. 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!
1.13 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 equipment and components
Only recyclable materials are used in the manufacture of the devices and components. Help protect
the environment by ensuring that the devices 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. using certified firms and recycling specialists or at collection points.
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REMKO KWT series
2 Technical data
2.1 Unit data
Series KWT 180 DC KWT 240 DC KWT 300 DC
Operating mode
Nominal cooling output
Energy efficiency ratio - cooling A A+ A
Energy efficiency rating EER
Energy consumption, hourly
Nominal heating
Energy efficiency ratio - heating A
Energy efficiency rating COP
Energy consumption, hourly
Dehumidification capacity l/h 0.9 1.1 1.2
Application area (room volume),
approx.
Setting range °C 16-31
Operating range, cooling °C/r.F.% -5 to +43/35-65
Operating range, heating °C/r.F.% -10 to +24/35-65
Refrigerant
3)
1)
1)
1)
1)
kW 1.73 (0.7-2.4) 2.35 (0.92-3.10) 2.87 (1.40-3.50)
3.01 3.22 2.74
kWh/60
min
kW 1.71 (0.8-2.4) 2.36 (1.10-2.67) 2.75 (1.35-3.50)
3.15 3.28 3.12
kWh/60
min
m³ 60 80 100
R290 R410A R32
Local, two-hose air conditioner with inverter tech-
nology for cooling and heating
0.57 0.73 1.0
0.54 0.72 1.0
Refrigerant, basic quantity kg 0.15 0.56 0.5
CO2 equivalent
Max. operating pressure bar 38
Air flow volume per stage
Sound pressure level min/max
Sound power level max. dB(A) 57 58 57
Power supply V/Ph/Hz 230/1~/50
Enclosure class IPX0
Max. power consumption W 900 1060 1450
Max. current consumption A 3.9 4.8 6.3
Connection diameter pipe channel mm 160 200
Max. pipe channel length m 1
2)
t 0.00 1.69 0.34
m3/h
dB(A) 27/39 27/41 29/43
240/300/360 270/320/400 300/350/450
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Series KWT 180 DC KWT 240 DC KWT 300 DC
1030
555
1030
170
170
810
810
165
165
549
A
B
Dimensions - height mm 549 555 555
Dimensions - width mm 810 1030 1030
Dimensions - depth mm 165 170 170
Weight kg 38.0 49.0 41.0
EDP no. 1609180 1609240 1609300
1)
Per EN 14511
2)
Per EN 12102
3)
Contains greenhouse gas per Kyoto protocol (R410A: GWP 2088 / R290: GWP 3 / R32: GWP 675)
2.2 Unit dimensions
Fig. 1: Unit dimensions (all measurements in mm)
A: KWT 180 DC B: KWT 240 DC / KWT 300 DC
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
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A
2
1
4
3
5
6
A
B
C
D
E
REMKO KWT series
2.3 Scope of delivery
1: Air duct outside panels (2 pcs.)
2: Air duct internal spigots (2 pcs.)
3: IR remote control
3 Design and function
3.1 Unit description
The local room air conditioner consists of a compact housing and 2 exhaust air ducts to remove or
supply heat.
The condenser built into the unit is used to pass
the heat removed from the room to the outside air
when in cooling mode. In heating mode, the heat
received via the evaporator is released into the air
in the room to be heated via the condenser. In both
operating modes, the compressor adjusts its power
exactly to the requirements and thereby regulates
4: Plastic sheet (2 pcs.)
5: Wall-mounted bracket
6: Mounting template
the setpoint temperature with minimal temperature
fluctuations. Thanks to this inverter technology
energy is saved compared to conventional room
air conditioners and the noise emissions are
reduced to a particularly low level.
The air conditioner is designed to be located
indoors near the bottom of the wall. It is operated
by an infrared remote control or via the integrated
touch display.
The air conditioner consists of a compressor, evaporator and condenser in a lamella design, evaporator and condenser fans as well as the controller
and condensate tray.
Fig. 2: Unit function
A: Inside air inlet
B: Inside air outlet
C: Outside air inlet
D: Outside air outlet
E: Condensate drain
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A
max. 6 m
4 Operation
The system can be operated by means of the
touch panel on the unit or via the infrared remote
controller. The functional operation is identical.
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.
The infrared remote control is operated via a
button battery of type CR2430. Replacement is
carried out at the rear of the remote control. Turn
the cover counter-clockwise with a flat object (e.g.
a coin) to open. Then, the old button battery can
be removed and the new button battery inserted
with the positive terminal facing upwards. Ensure
that only button batteries of type CR2430 (3V) are
used when replacing.
Fig. 4: Changing the battery
Fig. 3: Maximum distance
Help save on energy consumption in stand-by
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.
11
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!
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1
6
4
14
11
5
7
3
12
13
10
7
A
A
9
8
3 6
11
1
2
5
3 8 4 9
10
1
2
3
4
5
6
7
REMKO KWT series
Keys and displays of the operating unit and their functions
The system can be operated by means of the touch panel on the unit or via the standard infrared remote
controller. The functional operation of the keys are identical.
Fig. 5: Keys on the remote control
" ” - on/off key
Press this key to operate the unit.
" " key - "Cooling" mode
Hold down this key to activate cooling mode.
" " and " " keys - Temperature setting
Using these keys, the set temperature can be
increased or lowered in 1 °C steps between 16 and
31 °C.
" " key - Fan speed
Operating this key adjusts the fan speed in the following steps:
“ ” symbol - low
Low fan speed
“ ” symbol - medium
Medium fan speed
“ ” symbol - high
High fan speed
“ (flashing)” symbol - boost:
The boost function provides a 30 minute performance increase for quick cooling or heating.
“ (sliding)” symbol - automatic:
Automatic speed adjustment to meet required performance.
Adjusting the fan speed is possible in cooling,
heating and recirculation mode.
" " key - Dehumidifying
Dehumidifying mode is activated by holding down
this key. In this mode, the temperature and fan
speed cannot be adjusted.
"A" key - Automatic
Automatic mode is activated by holding down this
key. In this mode, the unit switches automatically
between the cooling and heating operating modes
based on the room temperature and the setpoint
which has been selected. The fan speed is also
controlled by the unit.
" " key - "Heating" mode
Heating mode is activated by holding down this
key.
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9
10
11
12
13
14
" " key - "Recirculation" mode
Recirculation mode is activated by holding down
this key.
" " key - Night mode
Night mode is activated by pressing this key.
Cooling mode:
The temperature set is increased by 1 °C after 1
hour and a further degree after 2 hours. After the
second hour, the temperature no longer changes
and after a further 6 hours the unit goes into
standby mode.
Heating mode:
The temperature set is lowered by 1 °C after 1
hour and a further degree after 2 hours. After the
second hour, the temperature no longer changes
and after a further 6 hours the unit goes into
standby mode.
The function can be deactivated again by pressing
the key again.
“ ” key - Swing function
Pressing this key activates the Swing function. The
discharge fin can be oscillated and locked to the
desired position by pressing the key again.
" " key - Hotel mode
Hotel mode limits the adjustment range in cooling
mode from 22 °C to 28 °C and in heating mode
from 16 °C to 24 °C. The automatic function is also
deactivated.
After holding the key down for 10 seconds, hotel
mode can be activated (En) or deactivated (dS)
with a quick press. The display returns after 5 seconds and stores the settings.
A quick press of the key on the base screen does
nothing.
Digital display
The current set temperature is displayed in normal
operation on the digital display. The display is also
used for further function settings and for displaying
error codes in the event of a fault.
Graphical temperature display
The graphical temperature display shows the
approximate ambient temperature using 7 bars
and lights up either red (heating) or blue (cooling)
in the respective operating mode. The temperature
display also makes a sliding motion when boost
mode is active.
" " key - Timer-
It is possible to activate the timer function using
this key.
By pressing this key with the unit deactivated, it is
possible to automatically start the unit after the
time set.
It is also possible with the unit active to automatically stop the unit after the time set using this key.
The time can be adjusted with the arrow keys (“ ”
and “ ”) in a range of 1 to 24 hours.
After the desired time has been set, the input can
be confirmed by pressing the timer key again.
If the timer key is held down for 3 seconds, key
lock is activated. All inputs by the user are prevented with key lock active. Key lock can be deactivated by holding down the timer key again for 3
seconds.
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A
B
D
C
> 800 mm
REMKO KWT series
5 Assembly and
installation
5.1 Important notes prior to installation
When installing the unit, observe the following
points:
n The installation must be carried out on a flat
wall
n Ensure that the wall meets the static require-
ments (consider the weight of the device as
well as the required holes to be drilled)
n Ensure that the minimum clearances are
observed to allow trouble-free maintenance
and/or servicing
n Ensure that no water pipes, power cables or
similar are inside the wall of the installation
area as they could be damaged by drilling
holes
n Ensure that there are no adjacent objects
which may obstruct the air circulation
n Do not install the unit in close proximity to or
above heat sources or electrical devices
n By correctly placing the unit, ensure that the air
stream is not directly aimed at people
n A mains socket suitable for a plug with protec-
tive contact, must be provided in the vicinity of
the system
Minimum clearances (all measurements in mm)
KWT DC
A 60
B 120
C 60
D 50
Observe minimum clearances even outside and
ensure that vegetation and plants also keep to the
minimum distances. Heavy contamination of the
condenser and increased maintenance costs must
be expected if there are leaves or needles in the
vicinity of the ventilation ducts.
Furthermore, depending on the region, ensure that
the ventilation ducts are not blocked with snow to
prevent the entry of snow into the unit or limitation
of the air flow.
5.2 Minimum clearances
Observe the minimum clearances to allow access
for maintenance and repair work and facilitate
optimum air distribution.
Fig. 7: Minimum clearances
5.3 Installation materials
The unit must be fastened to a suitable wall using
the wall bracket with sufficient screws. Only use
suitable fastening materials for your application
case.
Fig. 6: Minimum clearances
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5.4 Installation
A
A
5 mm
A
Perform the installation as follows:
1. Cut the required holes out of the mounting
template.
2. Fasten the mounting template to the wall.
Ensure that this is level.
3. Mark the required core holes, the fastening
points for the mounting rails and the holes for
the condensate drain and the lift protection
bracket.
A: Inside
4. Remove the mounting template.
5. Using a corresponding core drill machine,
drill two 162 mm diameter holes in the wall
for the air supply and exhaust air (the pilot
hole should be 5-10 mm. Use an incline of
approx. 3% to prevent the penetration of
water from outside.
A: Inside
6. Drill the remaining holes for the condensate
drain (min. 18 mm), the wall bracket and the
lift protection bracket. The condensate drain
must have an incline of at least 3 %.
7. Insert the supplied plastic sheets into the drill
holes and cut off the excess material so that
the plastic sheets on the outside are 5mm
shorter than the wall thickness. Ensure that
the junction line points upwards. Then insert
the condensate hose into the hole provided.
NOTICE!
If the heating mode is to be used, may be
additional insulation between the plastic
sheets and the masonry necessary. The
need of insulation depends on wall construction and the environmental conditions and is supposed to form condensation prevent inside the wall.
A: Inside
8. Install the wall bracket with sufficient screws
to guarantee a secure hold.
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A
A
B
B
A
REMKO KWT series
A: Inside
9. Fold the outside panels together and insert
them through the drill hole. Align the panel
and place the inside panel. If necessary, the
inside panel can also be screwed to the
inside wall. Tighten the chain of the outside
panel and hook it into the inside panel at the
desired length. Cut off the excess length of
the chain. Repeat the process for the second
drill hole. The outside panels are equipped
with non-return flap valves. Pay attention to
the direction of the air flow when installing
(see fig. below).
10. Suspend the unit on the wall-mounted
bracket and check the alignment of the unit.
Pay attention to the connection of the condensate hose and to the electrical power
supply. Fasten the lift protection bracket to
the wall beneath the unit.
A: Outside wall / B: Inside wall
A: Inside
11. Loosen and remove the wing nuts on the
underside of the unit to remove the transport
lock.
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64
64
80
40
16
58
45
193
293
322
190
57
A
B
C
D
E
Mounting template KWT 180 DC
A: Area for the electrical connection
B: Drilling holes for the air inlet and outlet
C: Drilling holes for the anchors
17
D: Drilling hole for the condensate drainage connec-
tion
E: Drilling hole for the lift protection bracket
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80
47
404
293
68
197
16
11
64 64
57
190
A
B
C
D
E
REMKO KWT series
Mounting template KWT 240 DC
A: Area for the electrical connection
B: Drilling holes for the air inlet and outlet
C: Drilling holes for the anchors
D: Drilling hole for the condensate drainage connec-
tion
E: Drilling hole for the lift protection bracket
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Mounting template KWT 300 DC
80
47
404
293
68
197
16
11
64
64
57
190
C
A
B
D
E
A: Area for the electrical connection
B: Drilling holes for the air inlet and outlet
C: Drilling holes for the anchors
19
D: Drilling hole for the condensate drainage connec-
tion
E: Drilling hole for the lift protection bracket
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1
REMKO KWT series
5.5 Condensate removal
In cooling mode:
The unit is equipped with automatic drainage of the
condensate water that arises while in cooling
mode. For this purpose, the water that arises is
collected in the condensate tray of the unit and dispersed by a pump on the condenser. Here, it evaporates and is fed outside with the aid of the
exhaust air.
If the unit is operated for a prolonged period of
time, or if it is operated at a very high outdoor air
humidity, it is possible that the quantity of condensate water that arises is greater than the quantity
that can be evaporated. In this case, the unit
switches off via the integrated liquid level switch
and “OF” appears on the display.
NOTICE!
It is recommended to provide continuous condensate drainage even for cooling mode.
Beneath the unit there is a condensate drainage
connection for the permanent condensate drainage
connection and a T-piece with a closed emergency
drainage nozzle. Both connections are sealed at
the factory with a rubber stopper.
NOTICE!
In heating mode, automatic discharge through
evaporation is not possible and a permanent
condensate drain is absolutely necessary.
The condensate drain must be frost-proof.
Emergency drainage
Hold a container (with a min. container capacity of
3 litres) beneath the unit and open the emergency
drainage to discharge. Then close off the emergency drainage nozzle with the rubber stopper.
Fig. 8: Condensate removal
1: Emergency drainage nozzle
2: Connection for permanent discharge (13 mm)
20
Page 21
6 Electrical wiring
U
V
W
N PE L
CN4
CN2
CN5
CN8
CN6
CN7
CN2
COMCON
CN3
COMM-DRV
U
V
W
CN10 CN14
CN5
XP103
CN7
XP102
XP107
XP212
XP209
CN7
Cn6
CN9
CN11
CN12
CN18
CN15
CN17
CN16
CN14
CN13
CN10
CN8
CN4
CN3
CN2
CN1
M
M
M
M
M
CN9
NO COM
1
18
0-10V
19
8
9 10
11 12
13
14
15
16
A
17
3
2
4
5
6 7
A
B
C
Electrical drawings
Fig. 9: Electrical drawings
9: Fin positioning motor
10: External contact on/off
11: Condensate pump liquid level switch
12: Liquid level switch alarm/off
13: Condenser temperature probe
14: Outside air inlet temperature probe
15: Temperature probe, evaporator
16: Inside air inlet temperature probe
17: Touch display
18: Condenser fan motor
19: Evaporator fan motor
A: Power PCB
B: Control board
C: Inverter board
1: Mains power supply cable
2: Reactor coil
3: Compressor
4: Compressor outlet temperature probe
5: Condensate pump
6: Thermo-actuator
7: 4-way valve
8: Expansion valve actuator
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process
21
Page 22
REMKO KWT series
7 Commissioning
Before every commissioning the air inlet and outlet
openings should be checked for foreign bodies and
the air inlet filter must be checked for dirt. Blocked
or soiled grills and filters must be cleaned immediately, see "Care and maintenance" chapter.
Before starting up, ensure that the power supply is
present.
Cooling mode
1.
Use the " " key to switch the unit on.
2.
Select cooling mode with the " " key.
3. Set the desired room temperature with the
" and " keys.
4.
Select the desired fan speed using the " "
key.
Heating mode
1.
Use the " " key to switch the unit on.
2.
Select heating mode with the " " key.
3. Set the desired room temperature with the
" and " keys.
4.
Select the desired fan speed using the " "
key.
Automatic operating mode
1.
Use the "
2. Select automatic mode with the "A" key.
3. Set the desired room temperature with the
" and " keys.
The fan speed is selected automatically by the
unit.
Dehumidifying mode
1.
Use the " " key to switch the unit on.
2.
Select Dehumidifying mode with the " " key.
" key to switch the unit on.
The fan speed and temperature are selected automatically by the unit.
22
Page 23
8 Troubleshooting and customer service
The unit has been manufactured using state-of-the-art production methods and has been tested several
times to ensure that it works properly. If malfunctions should occur, please check the unit as detailed in the
list below. Please inform your dealer if the unit is still not working correctly after all the function checks have
been performed.
Error description Cause Remedial measures
No power supply Check the power supply
The unit cannot be switched on
The batteries in the remote control
are empty.
Replace the batteries
The unit does not start or switches
itself off.
The unit does not work or works at
reduced cooling capacity.
The unit does not respond to the
infra-red remote control.
The touch display does not
respond to inputs.
Power supply interrupted. Check power supply.
Operational temperature range
too low/exceeded.
Exhaust duct is blocked or longer
than 1 metres.
Filter contamination, inlet and/or
outlet blower openings blocked by
foreign objects.
Minimum clearances too small. Observe minimum clearances.
Windows and doors open/heat
load was increased.
"Cooling" operating mode is not
selected.
Batteries in the remote control are
empty or the distance to the
receiver is too great.
After battery exchange, incorrect
polarity of batteries.
Key lock activated.
Observe operational temperature
range 18 to 35 °C.
Ensure that there is a clear path
for the exhaust air. Shorten the
exhaust duct.
Clean filter.
Close doors and windows/reduce
heat load.
Select the correct operating mode.
Insert new batteries/reduce distance.
Insert the batteries with the correct polarity. Observe marking.
Deactivate key lock. (See chapter
“Operation”)
Unit is not level. Adjust the unit so it is level
Condensate discharge on unit.
23
The stopper for the condensate
drain or the emergency discharge
is not correctly inserted or is damaged
Insert stopper correctly or replace
if necessary.
Page 24
REMKO KWT series
Error codes
If the unit detects an error, it is shown on the unit display using an error code. In the list below, the individual
error codes with the respective cause and possible remedial measures are listed. Repair work may only be
carried out by qualified specialist personnel.
Error
code Cause Remedial measures
E1 Room temperature sensor faulty Replace room temperature sensor
E2 Evaporator package sensor faulty Replace evaporator package sensor
E3 Outside temperature sensor faulty Replace outside temperature sensor
E4 Condenser package sensor faulty Replace condenser package sensor
E5 Evaporator fan motor defective Replace evaporator fan motor
E6 Condenser fan motor defective Replace condenser fan motor
E7
E8 Compressor outlet temperature sensor faulty
CP
OF Condensate liquid level switch triggered
Control board, power PCB or display board
communication error
External enabling contact open, external enabling signal not issued
Replace control board, power PCB or display
board
Replace compressor outlet temperature
sensor
Jumper contact, check on-site controller
Discharge condensate via emergency
drainage
24
Page 25
2
1
9 Care and maintenance
Regular care and observation of some basic points
will ensure trouble-free operation and a long
service life.
DANGER!
Prior to performing any work, ensure the equipment is disconnected from the voltage supply
and secured to prevent accidental switch-on!
n Clean the unit using a damp cloth. Do not use
a jet of water.
n Do not use any caustic, abrasive or solvent-
based cleaning products.
n Only use suitable cleaning agents, even in the
event of severe soiling.
n Ensure that no moisture gets into the unit.
Clean the exhaust air and outlet openings regularly and thoroughly. This is where dirt most
often collects first
1. Switch the unit off and pull out the power
plug.
2. The filter is beneath the upper air intake
grille. The grille can be pulled out [1] from the
front and then removed from above [2].
NOTICE!
Check the level of dirt on the on the exchanger
fins.
n The heat exchanger that is in the outside air
flow is particularly prone to contamination due
to outside influences depending on the installation location. Have this checked regularly by a
specialist company to ensure trouble-free operation.
n Clean the unit's air filter at regular intervals,
more frequently if necessary.
n It is recommended that you take out a mainte-
nance contract with an appropriate specialist
firm.
Filter cleaning
The unit is equipped with an air filter. This is found
in the air intake and filters recirculated room air.
The filter must be cleaned at regular intervals. We
recommend cleaning every 100 operating hours.
Reduce this interval in the case of heavily contaminated air.
3. The filter can now be pulled out from above.
25
Page 26
REMKO KWT series
4. In the case of light soiling, clean the filter with
a vacuum cleaner.
5. In the case of heavy soiling clean the filter
carefully in lukewarm water.
6. Then allow the filter to dry in the air.
7. Insert the filter and the grille back into the
unit.
8. Ensure that the filter is dry and undamaged.
NOTICE!
Never operate the air conditioner without an
original filter. The heat exchanger fins will be
contaminated without the filter and the unit will
suffer performance loss.
26
Page 27
10 Shutdown
NOTICE!
Never switch off the equipment by pulling out
the mains plug.
Temporary shutdown
If it is planned to shut down the unit for longer
periods e.g. during the winter, proceed as follows:
1. Let the unit run in recirculating operation for
approx. 2 hours in order to dry the surfaces
of the evaporator fins. This will transport the
remaining moisture out of the unit and this
will avoid unpleasant odours when the unit is
re-commissioned.
2. Switch off the unit using the "ON/OFF" key,
pull out the power plug and wind up the
power supply cable. Ensure that the cable is
not kinked or too severely bent.
3. Place a suitable container underneath the
condensate drain of the internal reservoir.
The condensate drain is located on the
underside of the unit.
4. Pull out the stopper from the condensate
drain and collect the condensate that drains
out.
5. Then insert the stopper once again. A
missing stopper or an incorrectly inserted
stopper will result in condensate leaking out
after re-commissioning.
6. Store the unit in an upright position in a cool,
dry and dust-free location protected from
direct sunlight. Cover the unit with a synthetic
cover to protect it against dust if desired.
27
Page 28
24
17
10
11
13
5
25
15 16
14
18
19
20
22
20
23
38
41
39
40
6
9
1
2
3
7
9
26
27
30
8
28
29
31
32
34
35
36
37
33
12
42
4
6
REMKO KWT series
11 Exploded view and spare parts lists
11.1 View of the unit KWT 180 DC
Fig. 10: Exploded view - Housing
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
28
Page 29
11.2 Spare parts list KWT 180 DC
IMPORTANT!
To ensure the correct delivery of spare parts, please always the device type with the corresponding serial
number (see type plate)
No. Designation KWT 180 DC
1 Swing fin
2 Swing motor
3 Display (with WiFi)
4 Unit panel, front
5 Condenser condensate tray
6 Heating mat condensate tray 35 W
7 Complete condenser fan
8 Mounting template
9 Choke
10 Condensate pump
11 Liquid level switch alarm/off
12 Condensate distributor non-return valve
13 Condensate pump liquid level switch
14 Condensate drain thermo-actuator
15 Condensate drainage connection T-piece
16 4-way valve (incl. coil)
17 Compressor
18 Right housing panel
19 Odour trap
20 Condensate collector
21 Coil, expansion valve
22 Evaporator fan vibration damper
On request by providing the
serial number
23 Evaporator fan teflon bearings
24 Condenser
25 Inverter board
26 Evaporator fan wheel
27 Compressor outlet temperature probe
28 Left housing panel
29 Evaporator fan motor
30 Control board
29
Page 30
REMKO KWT series
No. Designation KWT 180 DC
31 Combination temperature sensor
32 Air inlet grill
33 Power PCB
34 Housing strut, rear of unit
35 Air filter
36 Evaporator
37 Evaporator condensate tray
38 Air duct internal spigots
39 Air duct plastic sheets
40 Air duct outside panels, set
41 Infrared remote control
42 Wall-mounted bracket
Spare parts not illustrated
Condensate hose connector
On request by providing the
serial number
On request by providing the
serial number
30
Page 31
11.3 View of the unit KWT 240 DC / KWT 300 DC
26
19
12
13
15
9
28
17 18
16
20
21
22
24
23
25
40
43
41
42
6
9
8
7
1
2
3
4
5
10
11
27
29
32
6
30
31
33
34
36
37
38
39
35
14
44
Fig. 11: Exploded view - Housing
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
31
Page 32
REMKO KWT series
11.4 Spare parts list KWT 240 DC / KWT 300 DC
IMPORTANT!
To ensure the correct delivery of spare parts, please always the device type with the corresponding serial
number (see type plate)
No. Designation KWT 240 DC / KWT 300 DC
1 Swing fin
2 Swing motor
3 Display bracket
4 Display (with WiFi)
5 Side panel, front
6 Mounting template
7 Unit front panel
8 Side panel, front
9 Condenser condensate tray
10 Complete condenser fan
11 Choke
12 Condensate pump
13 Liquid level switch alarm/off
14 Condensate distributor non-return valve
15 Condensate pump liquid level switch
16 Condensate drain thermo-actuator
17 Condensate drainage connection T-piece
18 4-way valve (incl. coil)
19 Compressor
20 Right housing panel
21 Odour trap
22 Condensate collector
On request by providing the
serial number
23 Coil, expansion valve
24 Evaporator fan vibration damper
25 Evaporator fan teflon bearings
26 Condenser
27 Inverter board
28 Evaporator fan wheel
29 Compressor outlet temperature probe
30 Left housing panel
32
Page 33
No. Designation KWT 240 DC / KWT 300 DC
31 Evaporator fan motor
32 Control board
33 Combination temperature sensor
34 Air inlet grill
35 Power PCB
36 Housing strut, rear of unit
37 Air filter
38 Evaporator
39 Evaporator condensate tray
40 Air duct internal spigots
41 Air duct plastic sheets
42 Air duct outside panels, set
43 Infrared remote control
44 Wall-mounted bracket
Spare parts not illustrated
Condensate hose connector
On request by providing the
serial number
On request by providing the
serial number
33
Page 34
REMKO KWT series
12 Index
A
Assembly ............................. 14
C
Care and maintenance ................... 25
Changing the battery ..................... 11
Cleaning the filter ....................... 25
Condensate removal ..................... 20
D
Disposal of equipment .....................7
E
Electrical connection ..................... 21
Electrical drawings ...................... 21
Electrical wiring ......................... 21
Electrical wiring diagram .................. 21
Environmental protection ...................7
Error codes ............................ 24
I
Infrared remote control ................... 11
Installation ..........................14, 15
Installation materials ..................... 14
Intended use ............................ 6
M
Maintenance ........................... 25
Minimum clearances ..................... 14
Mounting template ....................17, 18
KWT 300 DC ........................ 19
O
Operating unit keys ...................... 12
Ordering spare parts .................. 29, 32
General ............................. 4
Identification of notes ................... 5
Notes for inspection .................... 6
Notes for installation ....................6
Notes for maintenance .................. 6
Personnel qualifications ................. 5
Refrigerant R32 ....................... 4
Refrigerant R290 ...................... 4
Safety notes for the operator ............. 6
Safety-conscious working ................5
Unauthorised modification ...............6
Unauthorised replacement part manufacture . 6
Scope of delivery ........................10
Spare parts list
KWT 180 DC ........................ 29
KWT 240 DC ........................ 32
KWT 300 DC ........................ 32
T
Troubleshooting ........................ 23
U
Unit description ......................... 10
Unit dimensions ......................... 9
V
View of the unit
KWT 180 DC ........................ 28
KWT 240 DC ........................ 31
KWT 300 DC ........................ 31
W
Warranty ............................... 6
S
Safety
Dangers of failure to observe the safety
notes ............................... 5
34
Page 35
Page 36
REMKO QUALITY WITH SYSTEMS
Air-Conditioning | Heating | New Energies
Telephone +49 (0) 5232 606-0
Telefax +49 (0) 5232 606-260
E-mail info@remko.de
URL www.remko.de
REMKO GmbH & Co. KG
Klima- und Wärmetechnik
Im Seelenkamp 12
32791 Lage
Hotline within Germany
+49 (0) 5232 606-0
Hotline International
+49 (0) 5232 606-130
We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!
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