REMKO KWT 200 DC User manual

Assembly and operating instructions
Read the instructions prior to performing any task!
REMKO KWT 200 DC
Local inverter room air conditioner without outdoor unit
0103-2015-03 Edition 1, en_GB

Installation and operating instructions (translation of the orig-
inal)
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............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 4
1.6 Safety notes for the operator........................................................................................................... 5
1.7 Safety notes for installation, maintenance and inspection.............................................................. 5
1.8 Unauthorised modification and changes......................................................................................... 5
1.9 Intended use................................................................................................................................... 5
1.10 Warranty........................................................................................................................................ 5
1.11 Transport and packaging.............................................................................................................. 6
1.12 Environmental protection and recycling........................................................................................ 6
2 Technical data....................................................................................................................................... 7
2.1 Unit data.......................................................................................................................................... 7
2.2 Unit dimensions............................................................................................................................... 8
2.3 Characteristic curves - heating capacity chart................................................................................ 8
3 Design and function.............................................................................................................................. 9
3.1 Unit description............................................................................................................................... 9
4 Operation............................................................................................................................................. 10
5Assembly and installation.................................................................................................................. 14
6 Electrical wiring................................................................................................................................... 19
7 Commissioning................................................................................................................................... 20
8 Troubleshooting and customer service............................................................................................ 22
9 Care and maintenance........................................................................................................................ 24
10 Shutdown............................................................................................................................................. 25
11 Exploded view of the unit and spare parts list................................................................................. 26
11.1 Exploded view of the unit ........................................................................................................... 26
11.2 Spare parts list............................................................................................................................ 29
12 Index..................................................................................................................................................... 31
3

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.
Keep this operating manual and the refrigerant
data sheet near to the units.
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.
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.
REMKO KWT
4

1.6 Safety notes 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 (grille) 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 certain unit parts or components
may lead to burns or injury.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
nSpaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
nAll housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
nThe units must be inspected by a service tech-
nician at least once annually. Visual inspec-
tions 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
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.
nLocal regulations and laws such as 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.
nMobile units must be set up securely on suit-
able surfaces and in an upright position. Sta-
tionary units must be permanently installed for
operation.
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 must not be altered or
bypassed.
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.
5

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!
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 KWT
6

2 Technical data
2.1 Unit data
Series KWT 200 DC
Operating mode Local, two-hose air conditioner with
inverter technology for cooling and heating
Nominal cooling output 1) kW 1.85 (1.10-2.93)
Energy efficiency ratio - cooling A
Energy efficiency rating EER 1) 2.61
Energy consumption, hourly kWh/60
min 0.71
Nominal heating 1) kW 2.27 (0.90-3.05)
Power consumption electrical heating resistor kW 0.85
Energy efficiency ratio - heating A
Energy efficiency size COP 1) 3.17
Energy consumption, hourly kWh/60
min 0.72
Dehumidification capacity l/h 1.0
Application area (room volume), approx. m³ 80
Setting range for °C 10-32
Operating range, cooling °C / r.H.% -15 to +50 / 35-65
Operating range, heating °C / r.H.% -15 to +32 / 35-65
Refrigerant 3) R 410A
Refrigerant, basic capacity kg 0.85
CO2 equivalent t 1.68
Operating pressure max. HP/LP bar 42/19
Air flow volume per stage m³/h 280/300/330
Sound pressure level per speed setting 2) dB(A) 35/38/43
Sound power level max. dB(A) 51
Power supply V/Ph/Hz 230 / 1~/ 50
Enclosure class IP 20
Max. power consumption W 2300
Electrical rated power consumption 1)
Standby operation W <0.5
Max. current consumption A 10.5
Connection diameter pipe channel mm 160
Max. pipe channel length m 2
7

Series KWT 200 DC
Dimensions - height mm 735
Dimensions - width mm 839
Dimensions - depth mm 280
Weight kg 49
Serial number 1468
EDP no. 1612200
1) Acc. to DIN EN 14511 / 2) Distance 1 m free field
3) Contains greenhouse gas acc. to Kyoto protocol (GWP 1975)
2.2 Unit dimensions
280
839
735
839 280
Fig. 1: Unit dimensions KWT 200 DC (All measurements in mm)
We reserve the right to modify the dimens. and design as part of the ongoing techn. development process.
2.3 Characteristic curves - heating capacity chart
0
0,5
1
1,5
2
2,5
3
-15 -10 -5 0 5
[°C]
[kW]
A
B
3,5
Fig. 2: Heating capacity graph
A: Outside temperature / B: Heating capacity
REMKO KWT
8

3 Design and function
3.1 Unit description
The local room air conditioner consists of a com-
pact housing and 2 exhaust hoses to remove/
supply the 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 con-
denser can pass the heat received by the con-
denser into the room to be heated via the evapo-
rator, which is also integrated in the unit. If the
amount of heat extracted from the outside air is
insufficient, the built-in electric heater automatically
switches on as well. This can be manually acti-
vated via the infrared remote control as a "booster"
to reach the setpoint as soon as possible. In each
of the above mentioned operating modes, the com-
pressor adjusts its power exactly to the require-
ments and thereby regulates the setpoint tempera-
ture with minimal temperature fluctuations. Thanks
to this "inverter technology" energy is saved com-
pared 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.
The air conditioner consists of a compressor, evap-
orator and condenser in a lamella design, evapo-
rator and condenser fan as well as the controller
and condensate tray.
A
B
A
A
B
B
A
Fig. 3: Unit function
A: Air inlet B: Air outlet
9

4 Operation
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 and insert
the batteries the correct way around (see mark-
ings).
max. 6 m
Fig. 4: Maximum distance
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.
When changing the battery, make sure that only 2
x 1.5 V AAA alkaline batteries are used. These can
be found on the rear of the infrared remote control
and can be accessed via the sliding cover. Make a
note of the DIP switch setting and do not adjust
this! Ensure you insert the batteries the correct
way round.
After inserting the new batteries, the time will flash
in the display. Adjust the time using the "Time" key.
The infrared remote control is now ready for use
again.
1
Fig. 5: Changing the battery
1: DIP switch
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 func-
tion is excluded from our recommendation!
REMKO KWT
10

Remote control keys and their functions
A symbol is shown on the display for a short time
to indicate that the settings are being transferred.
2
1
6
4
14
17
11
16
5
7
3
12
13
10
8
15
89
Fig. 6: Keys on the remote control
1
" (ON/OFF)" key
Press this key to operate the unit.
2
" " key - "Cooling" mode
You can change between the following operating
modes by pressing this key:
Cooling [A]:
The room temperature is lowered
Drying [B]:
The room air is dehumidified
Automatic [C]:
The unit switches automatically between the
cooling and heating operating modes based on the
room temperature and the setpoint which has been
selected
Recirculation [D]:
The air condition only works purely in the recircula-
tion mode
A
B
C
D
3
"
+
" and "
-
" keys
Temperature setting
Using these keys, the set temperature can be
increased or lowered in 1 °C steps
4
"
FAN
" key - Fan speed
Operating this key adjusts the fan speed in the fol-
lowing steps:
Automatic [A]:
Automatic speed adjustment to meet the required
performance
High [B]:
High fan speed
Medium [C]:
Medium fan speed
Low [D]:
Low fan speed
A
B
C
D
5
" " key - Night/economy mode
Pressing this key activates the night/economy
mode. The symbol appears on the remote
control. When this function is activated, the tem-
perature setpoint is lowered by 1 °C after 60
minutes. In cooling or dehumidification mode, the
set temperature is increased by 2 °C. To minimise
noise, the fan speed is also reduced.
6
"
ST
" key - Time and timer adjustment
Using this key, you can make adjustments to the
current time and the time setting of the timer.
Setting the time:
Press the key 3 times in a row. The time shown on
the remote control flashes. Set the time using the
"H" and "M" keys to the desired time. After a short
time, the settings are automatically transferred.
11

Programming the timer:
Switch-on time
Pressing the "ST" key once, causes the time to
flash and "ON" to appear in the display. Using the
"H" and "M" keys, the desired start time can be set.
After 10 seconds the settings are automatically
transferred. Now start the air conditioner. Then
press the "Timer" key to activate it.
Switch-off time
Pressing the "ST" key twice, causes the time to
flash and "OFF" to appear in the display. Using the
"H" and "M" keys, the desired start time can be set.
After 10 seconds the settings are automatically
transferred. Now start the air conditioner. Then
press the "Timer" key to activate it. To start the
timer every day at the desired times, press the
"Timer" key until appears in the display.
After the timer function has been activated, the
remote control does not work. You can only switch
back to the remote control when the timer function
has been deactivated. The last command from the
remote control will always be used.
7
"
H
" key - Set hours
This key is used to adjust the hours (see "ST" key -
time and set timer)
8
Infrared sensor
9
Temperature sensor
10
Display
The description of the individual symbols can be
seen below
Ä ‘Remote control display’
on page 13
11
" " key- "Heating" mode
You can change between the following operating
modes by pressing this key:
Heating [A]:
The room temperature is increased
Automatic [B]:
The unit switches automatically between the
cooling and heating operating modes based on the
room temperature and the setpoint
Auxiliary heater [C]:
The unit works in recirculation mode and is sup-
ported by the auxiliary heater
A
B
C
12
"
FLAP
" key
The position of the flap is adjusted using this key.
You can select between a fixed position and swing
operation.
13
"
iFEEL
" key
After this key has been operated, the room temper-
ature is detected using the infrared remote control
and is then transferred to the unit after a short
period of time. The "IFeel" symbol appears in the
display.
14
" " key
Manually activating/deactivating the auxiliary
heater.
15
" " key - Timer
This key must be pressed to activate the timer
16
"
M
" key
This key is used to adjust the minutes (see "ST"
key - time and set timer)
17
" " key - Turbo mode
Turbo mode is activated by pressing this key. This
only works in cooling and heating operating
modes. In the cooling mode, the best possible per-
formance is achieved by increasing the com-
pressor and fan frequency. In the heating mode,
the built-in electrical heater is also activated. If the
turbo mode is set then the operating lamp flashes
at longer intervals.
REMKO KWT
12

Remote control display
1
1a
1b
1c
1d
1e
1f
2
3
3a
3b
3c
3d
4 5
6
6a
6b
7
8
Fig. 7: Remote control display
1: Selected mode
1a: Heating mode
1b: Dehumidification mode
1c: Night mode
1d: Cooling mode
1e: Automatic mode
1f: Turbo mode
2: Selected flap setting/ Swing function
3: Selected fan setting
3a: Automatic
3b: High
3c: Medium
3d: Low
4: "iFEEL" function activated
5: Signal transfer to unit
6: Current value / setpoint
6a: Current room temperature
6b: Setpoint
7: Selected timer mode
8: Time
Display on indoor unit
2
1
4
3
5
Fig. 8: Display on indoor unit
1: IR signal receiver
2: Timer activated
3: Standby
4: Operating lamp
5: Manual Start/Stop
13

5 Assembly and installation
Important notes prior to installation
When installing the unit, observe the following points:
nThe installation must be carried out on a flat wall
nEnsure that the wall meets the static requirements (consider the weight of the device as well as the
required holes to be drilled)
nInstall the device at least 10 cm from the floor. The maximum height should not exceed 100 cm (see
Fig. 9)
nEnsure that there is space to the sides to allow trouble-free maintenance and/or servicing
nEnsure that there are no adjacent objects which may obstruct the air circulation
nDo not install the unit in close proximity to heat sources or electrical devices
nBy correctly placing the unit, ensure that the air stream is not directly aimed at people
1
2
A
Fig. 9: Mounting on a wall
A: Free air circulation
1: At least 80 cm
2: Minimum 10 cm, maximum 100 cm
REMKO KWT
14

Installation
Perform the installation as follows:
1. Cut the required holes out of the mounting
template.
2. Fasten the mounting template [1] to the wall.
Ensure that this is level [A] (for a detailed
drawing of the mounting template, see
Fig. 11).
3. Mark the required core holes and fastening
points shown on the mounting template on
the wall.
4. Remove the mounting template.
5. Using a corresponding core drill machine [2],
drill two 162 mm diameter holes for the air
supply and exhaust in the wall [3] (the pilot
hole should be 5-10 mm [3a]. In addition, a
third hole for the condensate hose should be
drilled (here the diameter should be 35 mm
[4]). Drill the holes to fix the mounting rail.
Ø 162 mm
A
1
2
Ø 35 mm
4
3
3
Ø 162 mm Ø 5-10 mm
3a
6. Shorten the supplied plastic pipe to the
proper length. The plastic pipe should be 70
mm shorter than the wall thickness meas-
ured.
7. Install the shortened pipe in the wall.
8. Now insert the supplied internal spigots as
well as the outer covers (the air flow louvres
should point towards the ground). Fasten
these with the screws supplied.
9. If it is not possible to fasten the outer covers
to the exterior façade using the screws, use
the supplied springs to fix the outer covers to
the internal spigots.
10. If the wall thickness is less than 10 cm, the
internal spigots must be directly screed to the
unit. Before fixing, remove the seals [5] and
place them back on the connection spigots
again after fixing pointing towards the wall.
15

< 10 cm
5
11. Please note that the factory supplied
mounting material is sufficient for wall thick-
nesses of up to 50 cm. It may be necessary
to extend the exhaust duct in certain cases.
For this purpose, a heat-resistant (up to 65
°C) plastic pipe can be used. Its diameter
must be 160 mm. Please note that the max-
imum length of 2 m may not be exceeded. To
avoid condensation build up in the wall, it is
necessary to insulate the air ducts with suit-
able insulation material (3-4 cm thickness)
[6].
If the unit is also used for heating then the
pipes must be insulated. If this is the case,
the 162 mm hole is no longer sufficient. It is
then necessary to enlarge the hole accord-
ingly.
6
Max. 2 m
12. Install the mounting plate on the wall as
shown on the mounting template [1]. The
number of screws required depends on the
wall's properties. Do not leave a gap
between the mounting plate and the wall.
13. Suspend the unit on the mounting plate [7]
and check for correct alignment.
7
14. Insert the condensate hose through the pre-
drilled hole (35 mm) and remove the rubber
stopper for the condensate drainage to the
outside. For drainage inside the building, pay
attention to the incline of the condensate
drainage line provided by the customer (1 cm
incline per metre of condensate line). To pre-
vent smells, a siphon should be placed
between the unit and the on-site condensate
line.
REMKO KWT
16

Important!
Check that the condensate hose is cor-
rectly laid. In cooling mode, the conden-
sate which is produced is evaporated in
the unit and fed to the outside through
the exhaust air duct. This is, however,
only possible when the usable limits are
observed. In the event of the air humidity
being raised and in heating and auto-
matic modes, the unit cannot or cannot
completely evaporate the condensate
which is produced. In this case, the water
is drained through the insulated conden-
sate hose. It is not recommended to start
the unit up without the condensate hose
being installed. If the unit is to be used
without a separate installed condensate
drainage, you must ensure that the con-
densate hose under the unit is closed.
Otherwise, water leakage and possible
water damage is possible!
15. Plug in the electrical supply. Ensure that
there is a 16A fuse fitted.
16. The unit is now ready for use.
Scope of delivery
4
5
2
7
6
3
1
Fig. 10: Scope of delivery
1: IR remote control (1 pc.)
2: Internal spigot (2 pcs.)
3: Outside cover (2 pcs.)
4: Plastic pipe (1 pc.)
5: Mounting template (1 pc.)
6: Screws and wall plugs (15 pcs.)
7: Fastening springs (2 pcs.)
17

Mounting template
2
A
1
230
100
129150 5015015950
158
218
300
Ø 162
Ø 35
839
4
Ø 162
B
3
5
Fig. 11: Mounting template (supplied with delivery)
A: Total width
B: Minimum distance to the floor
1: Mounting rail
2: Holes for mounting rail
3: Hole for air intake
4: Hole for air outlet
5: Hole for condensate drainage (only required in
heating mode)
REMKO KWT
18

6 Electrical wiring
Electrical drawings
J4
J11 J15
J17
J18
J35
J34
J33
J20
J36
J23
J30
J29
J3
J1
JP3
JP2
JP1
J9 J14
J12
J2
J7
J5B
J5A
J8
J6
373170120 ELi713 000585
J28
J13
J16
1
19
15 16
18
4
11
3
2
412
6
7
5
8
9
13
1714
10
Fig. 12: Electrical drawings
1: Heat gas probe
2: Assembly display
3: Flaps motor
4: Connection to contact J5B and J1
5: 4-way valve
6: Connection to contact J1 and J8
7: Power for fan motor outside
8: Fan motor outside
9: EMI filter
10: Room air sensor
11: Heat exchanger input probe
12: Float switch
13: Remote control cable
14: Heat exchange output probe
15: Electronic expansion valve
16: Room air sensor
17: Fan motor inside
18: Compressor
19: External heating
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process
19

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 grids and filters must be cleaned immedi-
ately, see "Care and maintenance" chapter.
Cooling mode
Before starting up, ensure that the power supply is
present and that the standby LED is lit.
1. Use the " " key to switch the unit on.
2. Using the " " key, select cooling mode (until
the snowflake symbol appears in the dis-
play).
3. Set the desired room temperature with the
"
+
and
-
" key. The setpoint
appears in the display for 5 seconds. Then
the actual current value is shown *).
4. Select the desired fan speed using the "
FAN
"
key.
Heating mode
1. Use the " " key to switch the unit on.
2. Using the " " key, select heating mode (until
the sun symbol appears permanently in the
display).
3. Set the desired room temperature with the
"
+
and
-
" key. The setpoint
appears in the display for 5 seconds. Then
the actual current value is shown *).
4. Select the desired fan speed using the "
FAN
"
key.
As the unit extracts the heat energy from the
cold outdoor air in heating mode (even below
freezing), the heat exchanger ices up after a
specific amount of operating time. The unit
then reverses the cooling circuit to de-ice the
heat exchanger. This requires defrosting
energy from the room. The fan motor stops.
Cold air is sometimes emitted for a short time.
As soon as the defrosting process is complete,
the unit returns to normal heating mode.
Automatic operating mode
1. Use the " " key to switch the unit on.
2. Using the " " key or the " " key, select the
automatic operating mode (until the auto-
matic symbol appears permanently in the dis-
play).
3. Set the desired room temperature with the
"
+
and
-
" key. The setpoint
appears in the display for 5 seconds. Then
the actual current value is shown *). When
automatic mode is operated, the unit calcu-
lates the temperature difference between the
setpoint value and the current actual value.
Depending on the difference, the unit auto-
matically switches between "Cooling" or
"Heating".
4. Select the desired fan speed using the "
FAN
"
key.
∆ 1 H ∆ 1 H
MIN. MAX.
A
B
C
C
B
A
27
26
25
24
23
22
21
20
19
A A A
Fig. 13: Automatic mode sequence
A: On
Dehumidifying mode
1. Use the " " key to switch the unit on.
2. Use the " " key to select the dehumidifying
mode (a droplet symbol appears in the dis-
play).
3. Set the desired room temperature with the
"
+
and
-
" key. The setpoint
appears in the display for 5 seconds. Then
the actual current value is shown *).
4. In dehumidifying mode, the fan speed is
automatically selected to prevent cooling the
room down too much
Dehumidifying mode is not possible when the
room temperature is lower than 10 °C!
REMKO KWT
20