REMKO BL 262 DC User Manual

Assembly and operating instructions

REMKO BL...DC

BL 262 DC, BL 352 DC

Inverter wall-mounted room air conditioner with split design

with quick-coupling system

0043-2014-03 Edition 5, en_GB

Read the instructions prior to performing any task!

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!

Installation and operating instructions (translation of the orig­inal)

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............................................................................................................... 5

1.6 Safety notes for the operator........................................................................................................... 6

1.7 Safety notes for installation, maintenance and inspection.............................................................. 6

1.8 Unauthorised modification and changes......................................................................................... 6

1.9 Intended use................................................................................................................................... 6

1.10 Warranty........................................................................................................................................ 6

1.11 Transport and packaging.............................................................................................................. 7

1.12 Environmental protection and recycling........................................................................................ 7

2 Technical data....................................................................................................................................... 8

2.1 Unit data.......................................................................................................................................... 8

2.2 Unit dimensions ............................................................................................................................ 10

2.3 Performance curves for heating and cooling ................................................................................ 11

3 Design and function............................................................................................................................ 13

3.1 Unit description............................................................................................................................. 13

4 Operation............................................................................................................................................. 14

5

Installation instructions for qualified personnel.............................................................................. 22

5.1 Important notes prior to installation............................................................................................... 22

5.2 Wall openings................................................................................................................................ 22

5.3 Installation materials..................................................................................................................... 22

5.4 Selection of installation location ................................................................................................... 23

5.5 Minimum clearances..................................................................................................................... 24

5.6 Oil return measures....................................................................................................................... 25

5.7 Connection variants for the indoor unit......................................................................................... 25

5.8 Wall bracket for the indoor unit..................................................................................................... 25

6 Installation........................................................................................................................................... 26

6.1 Installation of the indoor unit......................................................................................................... 26

6.2 Connecting the refrigerant piping.................................................................................................. 26

6.3 Connection of quick-release couplings......................................................................................... 27

6.4 Leak testing................................................................................................................................... 28

7 Condensate drainage connection and safe drainage...................................................................... 29

8 Electrical wiring................................................................................................................................... 31

8.1 General Information...................................................................................................................... 31

8.2 Connecting the indoor unit............................................................................................................ 31

8.3 Outdoor unit connection................................................................................................................ 32

8.4 Electrical wiring diagram............................................................................................................... 32

8.5 Electrical drawings........................................................................................................................ 34

9 Before commissioning....................................................................................................................... 36

10 Commissioning................................................................................................................................... 36

11 Troubleshooting, fault analysis and customer service................................................................... 38

11.1 Troubleshooting and customer service....................................................................................... 38

11.2 Diagnosis and solution indoor unit.............................................................................................. 40

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REMKO BL...DC

12 Care and maintenance........................................................................................................................ 48

13

Exploded view and spare parts lists................................................................................................. 50

13.1 Exploded view - Indoor unit......................................................................................................... 50

13.2 Spare parts list - Indoor unit........................................................................................................ 51

13.3 Exploded view - Outdoor unit...................................................................................................... 52

13.4 Spare parts list - Outdoor unit..................................................................................................... 53

14 Shutdown............................................................................................................................................. 53

15 Index..................................................................................................................................................... 54

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1 Safety and

usage instructions

1.1 General safety notes

Carefully read the operating manual before com­missioning 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.

Identification of notes

1.2

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!

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.

1.3 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.

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.

Dangers of failure to observe

1.4
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:

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.

1.5 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.

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REMKO BL...DC

1.6 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.

1.7 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.

Unauthorised modification

1.8
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.

Intended use

1.9

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.

1.10 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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1.11 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!

1.12 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 BL...DC

2 Technical data

2.1 Unit data

Series BL 262 DC BL 352 DC

Operating mode

Nominal cooling output

Energy efficiency ratio SEER

1)

1)

Electrical rated power consumption, cooling

Electrical rated current consumption, cooling

Power consumption, annual, QCE

Energy efficiency ratio, cooling

Nominal heat capacity

2)

Energy efficiency ratio SCOP

3)

1)

4)

Electrical rated power consumption, heating

Electrical rated current consumption, heating

Power consumption, annual, QHE

Energy efficiency ratio, heating

3)

2)

kW

1)

kW

1)

kWh 144 207

kW

2)

kW

2)

kWh 1,068 1,363

Inverter wall-mounted room air conditioner com-

bination for cooling and heating

2.80 (1.10-3.70) 3.60 (1.10-4.20)

6.8 6.1

0.73 1.18

A

3.20 5.10

A++ A++

2.90 (1.00-4.10) 3.70 (1.10-4.60)

3.8 3.8

0.75 0.91

A

3.30 4.00

A A

Max. power consumption kW 2.2 2.1

Max. current consumption A 9.5 9.5

EDP no. 1629262 1629352

1)

Air inlet temp. TK 27°C / FK 19°C, outside temperature TK 35°C, FK 24°C, max. air flow volume,

5m pipe length

2)

Air inlet temp. TK 20°C, outside temperature TK 7°C, FK 6°C, max. air flow volume, 5m 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

8

Data specific to indoor unit BL 262 DC IT BL 352 DC IT

Application area (room volume), approx.

m

3

80 110

Adjustment range, room temperature °C +17 to +30, +8 with "FP" function

Operating range °C +17 to +32

Air flow volume per level m³/h 360/480/550 370/480/630

Sound pressure level per speed setting

Sound pressure level, Silent/Turbo mode

Sound power level max.

5)

5)

5)

dB (A) 28/36/40 27/36/42

dB (A) 22/42 22/44

dB(A) 53 56

Enclosure class IP X 0

Condensate drainage connection mm 18

Dimensions: H/W/D mm 280/750/198 280/835/198

Weight kg 7.0 8.5

EDP no. 1629264 1629354

5)

At distance of 1m in the open air; specified values are maximum values

Data specific to outdoor unit BL 262 DC AT BL 352 DC AT

Power supply

V/Ph/

Hz

230 / 1~ / 50

Operating range, cooling °C +5 to +50

Operating range, heating

7)

°C +5 to +34

Air flow rate, max. m³/h 1,800 2,000

Enclosure class IP 24

Sound power level max.

Sound pressure level

Refrigerant

6)

5)

5)

dB (A) 60 63

dB (A) 49 55

R 410A

Refrigerant, basic capacity kg 1.1 1.1

Max. operating pressure kPa 4,200 / 1,500

Refrigerant piping, max. length m 3, 5, 8 3, 5, 8

Refrigerant piping, max. height m 5 5

Dimensions: H/W/D mm 590/760/285

Weight kg 35.0 35.5

EDP no. 1629263 1629353

5)

At distance of 1m in the open air; specified values are maximum values

6)

Contains greenhouse gas according to Kyoto protocol, GWP 1975

7)

This can be extended to -15°C with the appropriate accessory kit

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C

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B

C

REMKO BL...DC

2.2 Unit dimensions

Outdoor units

Fig. 1: Outdoor unit dimensions BL 262-352 DC AT

Dimensions (mm) A B C D E

BL 262-352 DC AT 590 760 285 530 290

Indoor units

Fig. 2: Indoor unit dimensions BL 262-352 DC IT

Dimensions (mm) A B C

BL 262 DC 280 750 198

BL 352 DC 280 835 198

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

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2.3 Performance curves for heating and cooling

0,00

1,00

2,00

3,00

4,00

5,00

12 7 2 0 -7 -10 -15

2

1

3

A

[°C]

0,00

1,00

2,00

3,00

4,00

5,00

6,00

21 25 30 35 40 45 50

2

1

3

A

[°C]

Heating capacity BL 262 DC

Fig. 3: Performance curves, heating BL 262 DC (data for 20 °C indoor temperature)

A: Outside temperature
1: COP

2: Heating capacity in kW
3: Power consumption in kW

Outside temperature in °C 12 7 2 0 -7 -10 -15

Heating capacity in kW 3.33 2.93 2.79 2.65 2.36 2.22 1.91

Power consumption in kW 0.76 0.75 1.26 1.19 1.11 1.11 1.05

COP 4.37 3.91 2.21 2.23 2.12 2.00 1.82

Cooling capacity BL 262 DC

Fig. 4: Performance curves, cooling BL 262 DC (data for 27/19 °C indoor temperature)

A: Outside temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW

Outside temperature in °C 21 25 30 35 40 45 50

Cooling capacity in kW 2.80 2.99 3.01 2.90 2.49 2.36 2.30

Power consumption in kW 0.57 0.61 0.67 0.73 0.74 0.75 0.78

EER 4.93 4.87 4.51 3.97 3.36 3.13 2.94

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0,00

1,00

2,00

3,00

4,00

5,00

12 7 2 0 -7 -10 -15

2

1

3

A

[°C]

0,00

1,00

2,00

3,00

4,00

5,00

21 25 30 35 40 45 50

2

1

3

A

[°C]

REMKO BL...DC

Heating capacity BL 352 DC

Fig. 5: Performance curves, heating BL 352 DC (data for 20 °C indoor temperature)

A: Outside temperature
1: COP

2: Heating capacity in kW
3: Power consumption in kW

Outside temperature in °C 12 7 2 0 -7 -10 -15

Heating capacity in kW 4.21 3.70 3.53 3.35 2.98 2.80 2.42

Power consumption in kW 0.93 0.91 1.53 1.44 1.35 1.35 1.27

COP 4.55 4.07 2.31 2.33 2.21 2.08 1.90

Cooling capacity BL 352 DC

Fig. 6: Performance curves, cooling BL 352 DC (data for 27/19 °C indoor temperature)

A: Outside temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW

Outside temperature in °C 21 25 30 35 40 45 50

Cooling capacity in kW 3.57 3.81 3.84 3.70 3.18 3.01 2.93

Power consumption in kW 0.92 0.99 1.08 1.18 1.20 1.22 1.26

EER 3.89 3.84 3.56 3.14 2.65 2.47 2.32

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3 Design and function

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3.1 Unit description

The room air conditioners BL 262-352 DC have a
REMKO BL...AT outdoor unit as well as an BL...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 com­pressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conven­tional split systems and also reduces noise emis­sions 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 indoor unit is designed to be mounted high up
on the wall, in indoor areas. It is operated by an
infrared remote control.

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 controller in the indoor unit.

The indoor unit consists of a fin evaporator, evapo­rator fan, controller and condensate tray.

Floor brackets, wall brackets, refrigerant piping and
condensate pumps are available as accessories.

Fig. 8: Cooling cycle diagram for outdoor unit

1: Condenser
2: Condenser fan
3: Reversing valve
4: Compressor
5: Filter dryer
6: Capillary tube throttle element
7: Pressure gauge connection
8: Suction pipe connection valve
9: Liquid line connection valve

Fig. 9: System layout

A: Outdoor area
B: Indoor area
1: Indoor unit

Fig. 7: Cooling cycle diagram for indoor unit

1: Evaporator
2: Evaporator fan
3: Suction pipe connection
4: Liquid line connection

13

2: Outdoor unit
3: Condensate drainage line
4: Condenser fan
5: Power supply
6: Shut-off valve
7: Suction pipe
8: Liquid line
9: Control line

Refrigerant piping is used to connect the indoor
unit to the outdoor unit.

max. 6 m

REMKO BL...DC

4 Operation

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 man­ually operated.

Manual mode

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

Cooling mode: last setting

Fan speed: AUTO

Heating mode: last setting

Fan: AUTO

Press a key on the infrared remote control to inter­rupt manual mode.

Fig. 10: Maximum distance

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 mark­ings). Removing the batteries causes all stored
data to be lost. The remote control will then access
the default settings, which you are free to cus­tomise at any time.

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!

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Display on indoor unit

The display illuminates according to the settings.

Fig. 11: Display on indoor unit

1: Ionic function
2: Display of defrosting
3: Power light
4: Timer enabled / disabled
5: Signal receiver
6: Display of target value + display

Keys on the remote control

"MODE" key

Press this key to select the operating mode. The
indoor unit has 5 modes:

1. Automatic mode

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

2. Cooling mode

In this mode, the warm air in the room is cooled
down to the preset temperature.

3. Dehumidification mode

In this mode, the room is dehumidified, thereby the
room temperature significantly lowered. Influencing
temperature and fan speed in this mode not pos­sible.

4. Heating mode

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

5. Recirculation mode

In this mode, the air in the room is recirculated.
Temperature selection is not possible.

Fig. 12: Keys on the remote control

"ON/OFF" key

Press this key to put the unit into operation and
take it out of operation.

"FAN" key

Press this key to set the desired fan speed. 4
speeds are available:

Automatic, low, medium and high fan stage.

"SLEEP/FRESH" key

"SLEEP" key

Pressing this key will automatically increase or
decrease the target temperature by 1 °C within an
hour in cooling and heating mode respectively.
Press this key to maintain the most convenient
temperature and save energy. This function is only
available in "Cooling", "Heating" and "Auto" modes.
If the unit is working in "SLEEP" mode, this activity
is interrupted by pressing the "MODE", "FAN",
"Speed" or ""ON/OFF" keys.

"FRESH" key

Activates the unit's ion generator. This releases
negatively charged particles into the airflow, which
neutralises the influences of smoke and dust,
among other things.

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REMKO BL...DC

"TURBO" key

Press this key to directly activate the oscillating
function of the fins for better air distribution in the
room.

The "TURBO" function allows the preset tempera­ture to be reached in the shortest possible time.
Pressing this key in "Cooling mode" causes the
unit to blow a blast of cooling air into the room at a
very high fan speed.

"SELF CLEAN" key

This key activates the self-clean function.

" ▲ " and " ▼ " keys

The " ▲ " key increases the desired temperature to
30°C in 1°C increments.

The " ▼ " key decreases the desired temperature
to 17°C in 1°C increments .

"LED" key

This key switches the backlight of the display on
the remote control off and back on again.

"TIMER ON" key

This key initiates the automatic switch-on time for
the unit. Each time the key is pressed, the auto­matic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-on time to 0.0.

"TIMER OFF" key

This key initiates the automatic switch-off time for
the unit. Each time the key is pressed, the auto­matic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-off time to 0.0.

"DIRECT" key

This key sets the desired fin position of the
exhaust fins. Each time the "DIRECT" key is
pressed, the fins change position by 6 degrees.

"FOLLOW ME" key

Pressing this key initiates the "Follow Me" function.
The display on the remote control shows the actual
temperature of the current location of the remote
control. The remote control transmits this signal to
the air conditioning unit at intervals of 3 minutes,
until the "Follow Me" key is pressed again. The air
conditioning unit automatically cancels the "Follow
Me" function if it has not received the signal for a
period of 7 minutes.

"SILENT MODE" / "FP" key

This key activates/deactivates Silent mode.

The fan speed is reduced to a minimum.

In this mode, the air conditioning unit operates
silently.

The "FP" (Freeze Protection) key activates a frost
protection function with which the setpoint in heat
mode is set to ca. 8°C.

"SWING" key

This key is used to stop and start the automatic
"Swing" function of the horizontal exhaust fins.

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Indicators on the LCD

Key functions

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

"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 "MODE" key to select "Auto"
mode.

2. Press the "UP/DOWN" key to set the desired
temperature. The temperature can be set

Fig. 13: Indicators on the LCD

1: Mode indicator - shows the current operating

modes, including Auto ( ), Cooling ( ), Dehu-

between 17 and 30°C, in increments of 1°C.

3. Press the "ON/OFF" key to switch on the air
conditioning unit.

midification ( ), Heating ( ), Fan ( ) and
back to Auto ( ) mode.

2: Signal transmission symbol. This symbol

appears when signals are being transmitted
from the remote control to the indoor unit.

3: ON/OFF symbol. This symbol appears when

the "ON/OFF" key is pressed. Pressing this key
again causes the indicator to go out.

4: TIMER ON symbol. This symbol appears when

TIMER ON is switched on.

5: TIMER OFF symbol. This symbol appears

when TIMER OFF is switched on.

6: Sleep symbol. This symbol appears when the

"Sleep" function is activated. Pressing this key
again causes the indicator to go out.

7: Temperature/Timer symbol. Shows the temper-

ature setting (-17°C~30°C). If "FAN" mode is
selected, the temperature setting is not dis­played. In Timer mode, the ON and OFF set­tings appear for the TIMER.

8: FOLLOW ME symbol. This symbol appears

when the "Follow me" function is activated.

Fig. 14: "Auto" mode

9: Fan speed symbol. This is where the selected

fan speeds are displayed: AUTO (no indicator)
and the three fan speed settings: (slow),

(medium) and
(fast). The fan speed is set to "Automatic"
when either "Auto" or "Dehumidification" mode
is activated.

– In "Auto" mode, the air conditioning unit is

able to logically select between the
"Cooling" , "Recirculation" and "Heating"
modes, specifically by detecting the differ­ence between the actual room temperature

The illustration of the LCD with all of the sym­bols present is only intended to provide a
clearer overview. During operation, only those
symbols relevant to the respective functions
appear on the display.

and the temperature set on the remote
control.

– In "Auto" mode, it is not possible to set the

fan speed. This is already controlled auto­matically.

– If "Auto" mode is not comfortable enough

for you, you can also select the desired
mode manually.

17

1

4

2

3

1

3

2

REMKO BL...DC

"Cooling", "Heating" and "Recirculation" mode

Make sure that the indoor unit is connected to the
power supply, and is switched on.

1. Press the "MODE" key to select from oper­ating modes "Cooling", "Heating" or "Recircu­lation".

2. Press the "UP/DOWN" key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.

3. Press the "FAN" key to select from the four
fan speeds (Auto, slow, medium and fast).

4. Press the "ON/OFF" key to switch on the air
conditioning unit.

1. Press the "MODE" key to select "Dehumidifi­cation" mode.

2. Press the "UP/DOWN" key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.

3. Press the "ON/OFF" key to switch on the air
conditioning unit.

Fig. 15: "Cooling", "Heating" and "Recirculation"
mode

– In "Fan" mode, the temperature setting is

not shown on the remote control, and it is
not possible to check the room tempera­ture. In this case steps 1, 3 and 4 can be
carried out.

"Dehumidification" 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.

Fig. 16: "Dehumidification" mode

In "Dehumidification" mode, it is not possible to
set the fan speed. This is already controlled
automatically.

"Timer" mode

Press the "TIMER ON" key to set the "Auto on"
time and the "TIMER OFF" key to set the "Auto off"
time for the unit.

Setting the "Auto on" time

18

1

2

1. Press the "TIMER ON" key. The remote con­trol shows "TIMER ON", the last "Auto on"
time setting and the symbol "H" appears on
the display. The unit is now ready to reset the
"Auto on" time and to start "TIMER ON"
mode.

2. Press the "TIMER ON" key again to set the
desired "Auto on" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.

3. Once these settings have been made, there
is a one second delay before the remote con­trol transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.

Fig. 17: "Timer" mode

Setting the "Auto off" time

1. Press the "TIMER OFF" key. The remote
control shows "TIMER OFF", the last "Auto
off" time setting and the symbol "H" appears
on the display. The unit is now ready to reset
the "Auto off" time and to stop "TIMER OFF"
mode.

2. Press the "TIMER OFF" key again to set the
desired "Auto off" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.

3. Once these settings have been made, there
is a one second delay before the remote con­trol transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.

– When Timer mode is selected, the remote

control automatically transfers the timer
signal to the indoor unit for the specified
period of time. Therefore, you should hold
the remote control in a location where it
can transfer the signal to the indoor unit
without interference.

– The effective operation for the time settings

by the remote control for the timer function
is restricted to the following settings:

0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,

5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23 and 24.

19

Start

Aus

6 Stunden späterZeit einstellen

Start

Off

Set time 6 hours later

Stop

An

10 Stunden späterZeit einstellen

Stop

On

Set time 10 hours later

An

Zeit
einstellen

Stop

Start

2 Std. später
nach Einstellen

10 Std. später
nach Einstellen

Stop

Start

On

Set time 2 hours later

after setting

10 hours later
after setting

REMKO BL...DC

Example TIMER function settings

"TIMER ON" (Auto on mode)

The "TIMER ON" function is useful if you want the
unit to switch on automatically before you come
home. The air conditioning unit will commence
operation automatically at the set time.

Example:

You want the air conditioning unit to switch on six
hours from the time it was programmed.

1. Press the "TIMER ON" key. The last oper­ating time setting for the timer, and the "H"
symbols, appear on the display.

2. Press the "TIMER ON" key until "6.0H" is
shown in the "TIMER ON" area on the
remote control.

3. Wait for three seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER ON" indicator stays lit, and
this function is activated.

Fig. 18: "TIMER ON" example

"TIMER OFF" (Auto off mode)

The "TIMER OFF" function is useful if you want the
unit to switch off automatically once you have gone
to bed. The air conditioning unit will cease opera­tion automatically at the set time.

Example:

You want the air conditioning unit to switch off ten
hours from the time it was programmed.

1. Press the "TIMER OFF" key. The last oper­ating time setting for the timer, and the "H"
symbols, appear on the display.

2. Press the "TIMER OFF" key until "10H" is
shown in the "TIMER OFF" area on the
remote control.

3. Wait for three seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER OFF" indicator stays lit,
and this function is activated.

Fig. 19: "TIMER OFF" example

Combined TIMER (setting "TIMER ON" and
"TIMER OFF" at the same time)

"TIMER OFF ð "TIMER ON"

(On ð Stop ð Start)

This function is useful if you want the unit to switch
off automatically once you have gone to bed, then
to switch back on automatically when you get up or
come home.

Example:

You want the air conditioning unit to switch off in
two hours from the time it was programmed, and
switch back on ten hours later.

1. Press the "TIMER OFF" key.

2. Press the "TIMER OFF" key again until

"2.0H" is shown in the "TIMER OFF" area on
the remote control.

3. Press the "TIMER ON" key.

4. Press the "TIMER ON" key again until "10H"

is shown in the "TIMER ON" area on the
remote control.

5. Wait for three seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER ON" and "TIMER OFF"
indicators stay lit, and this function is acti­vated.

Fig. 20: "TIMER OFF" / "TIMER ON" example

20

"TIMER ON ð "TIMER OFF"

Aus

Zeit
einstellen

Stop

Start

2 Std. später
nach Einstellen

5 Std. später
nach Einstellen

Stop

Start

Off

Set time 2 hours later

after setting

5 hours later
after setting

1

(Off ð Start ð Stop)

This function is useful if you want the unit to switch
on automatically before you wake up, then to
switch off again once you have left the house.

Example:

You want the air conditioning unit to switch on in
two hours from the time it was programmed, and
switch back off five hours later.

1. Press the "TIMER ON" key.

2. Press the "TIMER ON" key again until "2.0H"

is shown in the "TIMER ON" area on the
remote control.

3. Press the "TIMER OFF" key.

4. Press the "TIMER OFF" key again until

"5.0H" is shown in the "TIMER OFF" area on
the remote control.

5. Wait for three seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER ON" and "TIMER OFF"
indicators stay lit, and this function is acti­vated.

Fig. 22: "Sleep" function

The "SLEEP" function is only available in the
"Cooling", "Heating" and "Auto" modes.

Fig. 21: "TIMER ON" / "TIMER OFF" example

The timer settings ("TIMER ON" or "TIMER
OFF") which is made immediately after the set
time will be activated first.

SLEEP function

In this function, the unit automatically increases (in
cooling mode) or reduces (in heat mode) the tem­perature in the first two hours by 1°C an hour. For
the next five hours, the temperature is them kept
constant. Then this function is stopped.

The function maintains the most comfortable tem­perature while saving energy.

Adjusting the airflow direction

Use the "SWING" and "DIRECT" keys to achieve
the desired airflow direction.

1. Press the "DIRECT" key to determine the
horizontal position of the exhaust fins. Each
time the "DIRECT" key is pressed, the fins
change position by 6 degrees.

2. Pressing the "SWING" key causes the
exhaust fins to move up and down automati­cally.

If the fins are moved to a position which would
influence the cooling or heating effect of the air
conditioning unit, they change their direction of
movement automatically.

21

21 5

3 4

REMKO BL...DC

5 Installation instructions for qualified personnel

5.1 Important notes prior to instal­lation

n Transport the unit in its original packaging as

close as possible to the installation location.
You avoid transport damage by doing so.

n Check the contents of the packaging for com-

pleteness and check the unit for visible trans­port damage. Report any damage immediately
to your contractual partner and the shipping
company.

n Lift the unit on the corners and not on the

refrigerant or condensate drainage connec­tions.

n The refrigerant piping (liquid and suction pipe),

valves and connections must be insulated to
make them vapour diffusion proof. If necessary
also insulate the condensate drainage line.

n Select an installation location which allows air

to freely flow through the air inlet and outlet
(see section "Minimum clearances").

n Do not install the unit in the immediate vicinity

of devices which generate intensive thermal
radiation. Installation in the vicinity of thermal
radiation reduces the unit output.

n Only open the shut-off valves on the refrigerant

piping after installation is complete.

n Seal off open refrigerant piping with suitable

caps or adhesive strips to prevent the infiltra­tion of moisture and never kink or compress
the refrigerant piping.

n Avoid unnecessary bends. This minimises the

pressure loss in the refrigerant piping and
ensures that the compressor oil can flow back
without obstruction.

n Perform all electrical wiring in accordance with

applicable DIN and VDE standards.

n Ensure the electrical cables are properly con-

nected to the terminals, otherwise there is a
risk of fire.

n Only use the fasteners contained in the scope

of delivery with the units.

n Use four supports and the associated hooks to

attach the ceiling cassette (only applies to
ceiling cassettes).

n Use the insulated condensate hose in the

scope of delivery as a junction piece to the
continuing condensate drain. Secure the con­densate drain with the supplied clamps.

5.2 Wall openings

n A wall opening of at least 100 mm diameter

and 10mm incline from the inside to the outside
must be created.

n To prevent damage to the lines, the interior of

the wall opening should be padded or, for
example, lined with PVC pipe (see figure).

n After installation has been completed, use a

suitable sealing compound to close off the wall
opening, taking account of fire protection regu­lations (provided by the customer). Do not use
cement or lime containing substances!

Fig. 23: Wall opening

1: Liquid line
2: Control line
3: Condensate drainage line
4: Suction pipe
5: PVC pipe

5.3 Installation materials

The indoor unit is attached to the wall by a wall
bracket and 4 screws (to be provided by the cus­tomer).

The outdoor unit is attached by 4 screws and a
wall bracket to the wall or fixed by a floor bracket to
the ground.

22

1

20 cm

1

5.4 Selection of installation

location

Indoor unit

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

Outdoor unit

The outdoor unit is designed for horizontal installa­tion on a base in outdoor areas. The installation
site must be level, flat and firm. The unit should
also be secured to prevent it from tipping over. The
outdoor unit can be set up outside as well as inside
a building. For external installation, please observe
the following notes to protect the unit from the
influence of the weather.

Rain

For floor or roof set-up, the unit should be installed
with at least 10cm ground clearance. A floor
bracket is available as an optional accessory.

Sun

The condenser on the outdoor unit emits heat.
Exposure to sunlight further increases the temper­ature of the fins and reduces the heat released by
the finned heat exchanger. The outdoor unit should
be installed on to the north side of the building
whenever possible. If necessary, take measures to
provide sufficient shade (responsibility of cus­tomer). One possible solution is to build a small
roofed area over the unit. These measures should
not affect the flow of warm outlet air.

Snow

The unit should be wall-mounted in areas of heavy
snowfall. Installation should be at least 20cm
above the expected level of snow to prevent snow
from entering the outdoor unit. An optional wall
bracket is available as an accessory.

Fig. 25: Minimum clearance to snow

1: Snow

Installation inside buildings

n Ensure that heat can dissipate adequately

when placing the outdoor unit in cellars, lofts,
adjoining rooms or halls (

n Install an additional fan with a rated flow com-

parative to that of the outdoor unit being
installed in the room and which can compen­sate any additional pressure loss in ventilation
ducts (Fig. 26).

n Comply with any regulations and conditions

affecting the statics of the building. If neces­sary, fit acoustic installation.

Fig. 26).

Wind

If the unit is being installed in windy areas, ensure
that the warm outlet air is discharged in the pre­vailing wind direction. If this is not the possible, it
may be necessary to install a windbreak (to be pro­vided by the customer). Ensure that the windbreak
does not adversely affect the air intake to the unit.

Fig. 24: Windbreak

1: Wind

23

2

1

K

3

W

3

2

1

2

1

A

B

C

D

E

E

C

A

B

F

IT AT

REMKO BL...DC

Fig. 26: Installation inside buildings

K: Cold fresh air
W: Warm air
1: Outdoor unit
2: Additional fan
3: Air shaft

5.5 Minimum clearances

Observe the min. clearances to allow access for maintenance and repair work and facilitate optim. air distri­bution.

Fig. 27: Minimum clearances of the indoor unit and outdoor unit

AT: Outdoor unit / IT: Indoor unit
1: Air inlet / 2: Air outlet

Dimensions (mm)

A 120 150

B 1,500 700

C 120 400

D - 150

E 120 200

F 200 -

Indoor units Outdoor units

BL 262-352 DC IT BL 262-352 DC AT

24

2

1

A

B

3

A

C

B

A

B

C

D

F

I

J

5.6 Oil return measures

If the outdoor unit is installed at a higher level than
the indoor unit, suitable oil return measures must
be taken. Usually, an oil pump bend is installed for
every 2.5 metres of height difference.

Fig. 28: Oil return measures

A: Outdoor unit
B: Indoor unit
1: One oil pump bend in suction pipe to outdoor

unit every 2.5 metres of height difference
2: Radius: 50mm
3: Max. 10m

5.8 Wall bracket for the indoor unit

5.7 Connection variants for the indoor unit

The following connection variants can be used for
the refrigerant, condensate and control lines.

Fig. 29: Connection variants

A: Outlet on the wall, right
B: Outlet through the wall, right
C: Outlet on the wall, left

Fig. 30: Mounting points for wall bracket BL 262-352 DC IT (Front view, all dimensions in mm)

Unit type / dim. in mm A B C D F I J

BL 262 DC IT 375 375 275 165 45 346 100

BL 352 DC IT 417.5 417.5 230 210 45 315 100

The diameter of the pipe break-through is 65 mm for all units types.

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

25

REMKO BL...DC

6 Installation

6.1 Installation of the indoor unit

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

1. Mark the mounting points on the structurally
permissible building sections according to the
dimensions of the wall bracket.

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

3. Connect the refrigerant piping, electrical
cables and condensate drainage line to the
indoor unit as described below.

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

5. Check again that the unit is level. (

Fig. 31)

6.2 Connecting the refrigerant piping

The refrigerant pipes should be connected by the
customer on the right-hand side of the outdoor
component.

1. Use the wall or floor brackets to fit the out-

door unit against structural parts approved to
support the static load (refer to the installa­tion instructions for the brackets).

2. Ensure that structure-borne sound is not

transferred to parts of the building. Use vibra­tion dampers to reduce the effects of struc­ture-borne sound!

NOTICE!

Installation should only be performed by
authorised specialists.

CAUTION!

Fig. 31: Horizontal positioning

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

Both units are pre-filled with refrigerant at the
factory. Suitable protective clothing must be
worn during installation.

NOTICE!

Use only tools which are approved for use in
an HVAC environment.

26

6.3 Connection of quick-release couplings

The refrigerant pipes should be connected by the
customer on the right-hand side of the outdoor
component. The pre-filled refrigerant piping are
connected to the outdoor component by means of
the quick-connector system. Once installed, the
connections should be insulated to make them
vapour diffusion proof. The following instructions
describe the installation of the refrigerant piping for
the indoor unit on the outdoor unit.

1. Remove the pre-installed plastic cover from

the outdoor component (Fig. 32

).

Fig. 34: Remove protective caps

3. Before connecting the refrigerant pipes,
ensure that the quick-release couplings are
situated in front of one another (Fig. 35).

Fig. 32: Remove the plastic cover

2. Remove the green/black protective caps from
the quick-connectors on the outdoor compo­nent, as well as the flexible refrigerant pipes
on the indoor unit (Fig. 33 and

Fig. 33: Remove protective caps

Fig. 34).

Fig. 35: Position of the quick-release couplings

4. First connect and hand-tighten the refrigerant
piping to ensure it is correctly seated.

5. Then install the suction pipe with the largest
diameter (Fig. 36).

NOTICE!

When connecting the refrigerant piping,
take note of the "Outdoor unit, top" and
"Outdoor unit bottom" labelling and not
the colour-coding of the sealing caps.
Note the diameter of the lines. In order to
guarantee the function of the unit, the line
must be connected with other lines of
identical diameter!

27

2

1

REMKO BL...DC

Fig. 36: Installation on the outdoor unit

Fig. 37: Installation on the indoor unit

6. Then tighten the fittings with 2 appropriately­sized open-ended spanners. Use one
spanner to counter the force when tightening
the fitting (Fig. 38).

Pipe dimension in
inches

1/4" 15-20

3/8" 33-40

1/2" 50-60

5/8" 65-75

3/4" 95-105

CAUTION!

Only open the stop cocks following complete
installation of the quick-release couplings and

before switching the system on!

Tightening torque in Nm

6.4 Leak testing

Once all the connections have been made, the
pressure gauge station is attached to the Schrader
valve as follows (if fitted):

red = small valve = high pressure

blue = large valve = suction pressure

Leak testing involves spraying a leak detection
spray onto the connections. If bubbles are visible,
the connections have not been made properly.
Then tighten the screw connection.

NOTICE!

The escape of refrigerant contributes to cli­matic change. In the event of escape, refrig­erant with a low greenhouse potential has a
lesser impact on global warming than those
with a high greenhouse potential. This device
contains refrigerant with a greenhouse poten­tial of 1975. That means the escape of 1 kg of
this refrigerant has an effect on global warming
that is 1975 times greater than 1 kg CO2,
based on 100 years. Do not conduct any work
on the refrigerant circuit or dismantle the
device - always enlist the help of qualified
experts.

Fig. 38: Tightening the fitting

1: Tighten with the first open-ended spanner
2: Counter with the second open-ended spanner

7. Open the stop cocks with an Allen key before
switch the system on!

28

7 Condensate drainage

3

2

4

9

5 5

11

100

6

8

7

10 10

12 12

1

EB

B

A

D

C

11

1

5

5

8

1

9

3

connection and safe
drainage

Fig. 40: Dimensions for the strip foundation (bird's
eye view)

For the designations of 1,3,5,8,9 and 11, please
refer to the legend for the Fig. 39

dimensioning of the strip foundation

Fig. 39: Condensate drainage, seepage of conden­sate and strip foundation (cross-section)

1: Outdoor unit
2: Leg
3: Condensate collection tray
4: Floor bracket
5: Reinforced strip foundation

HxWxD = 300x200x800mm
6: Gravel layer for seepage
7: Condensate drainage heating
8: Drainage channel
9: Conduit for refrigerant piping and electrical

connecting line (temperature-resistant up to at

least 60°C)
10: Frost line
11: Drainage pipe
12: Soil

29

Dimen-

Value in mm

sion

A 800

B 200

C 530

D 290

E 330

Condensate drainage connection

If the temperature falls below the dew point, con­densation will form on the finned condenser
during heating mode.

A condensate tray should be installed on the
underside of the unit to drain any condensate.

n The condensate drainage line should have an

incline of min. 2%. This is the responsibility of
the customer. If necessary, fit vapour-diffusion­proof insulation.

n When operating the unit at outside tempera-

tures below 4 °C, ensure the condensate
drainage line is laid to protect it against frost.
The lower part of the housing and condensate
tray is also to be kept frost free in order to
ensure permanent draining of the condensate.
If necessary, fit a pipe heater.

n Following installation, check that the conden-

sate run off is unobstructed and ensure that the
line is durably leak tight.

min. 2%

REMKO BL...DC

Fig. 41: Condensate drainage connection - Indoor
unit

Safe drainage in the event of leakages

The REMKO oil separator OA 2.2 fulfils the fol­lowing list of requirements from regional regula­tions and laws.

NOTICE!

Local regulations or environmental laws, for
example the German Water Resource Law
(WHG), can require suitable precautions to
protect against uncontrolled draining in case of
leakage to provide for safe disposal of
escaping refrigerator oil or hazardous media.

30

8 Electrical wiring

2

1

4

3

1

8.1 General Information

A protected power supply cable is to be connected
to the outdoor unit and a vieradrige control line to
the indoor unit respectively.

DANGER!

All electrical installation work is to be per­formed by specialist companies. Disconnect
the power supply when connecting the elec­trical terminals.

WARNING!

All electric lines are in accordance VDE regula­tions to dimension and to lay.

NOTICE!

The electrical connection for the units must be
made at a separate feedpoint with a residual
current device in accordance with local regula­tions and should be laid out by an electrician.

The units' scope of delivery includes a ten metre
long, four-core control line for connecting the
indoor unit to the outdoor unit. The control line to
the outdoor unit contains a data cable which is
used to establish communication between the
indoor unit and the outdoor unit. This is used for
controlling the cooling and heating performance
and for forwarding malfunction messages to the
indoor unit. If the length is insufficient, you can
extend the control lines on the indoor unit.

Make the connection as follows:

1. Open the air inlet grill.

2. Remove the covers on the right-hand side

(Fig. 42).

3. Disconnect the control line from the terminal
block and remove the control line.

4. Connect the customer-laid control line to the
terminals (Fig. 42).

5. Join the customer-laid control line to the sup­plied control line in a professional manner.

6. Insert the control line plug into the corre­sponding socket on the outdoor unit.

7. Re-assemble the unit.

We recommend using shielded wires for the
control lines.

Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.

8.2 Connecting the indoor unit

n We recommend that a mains/repair switch be

installed near the outdoor unit.

n The terminal blocks for making the connections

are located at the rear of the unit. When the
unit is installed, measurements can be made
from the front by removing the cover.

n If an optional condensate pump is used as an

accessory in conjunction with the unit, it may
be necessary to install an additional relay with
a higher contact rating after the switch-off con­tact on the pump to switch off the compressor.

Fig. 42: Connecting the indoor unit

1: Cover
2: Strain relief
3: Terminal block for control line
4: Control line from outdoor unit

31

230V/1~/50 Hz

L N PE L(1) 1 2(N) S L(1) 1 2(N) S

BA

1

2

REMKO BL...DC

8.3 Outdoor unit connection

Proceed as follows to connect the line:

1. Remove the side-panel cover.

2. Choose the cable cross-section in accord-

ance with the relevant specifications.

3. Connect the lines as shown on the electrical
connection diagram.

8.4 Electrical wiring diagram

Connection BL 262-352 DC

4. Fix the line in the strain relief and re-

assemble the unit.

Fig. 43: Outdoor unit connection

Fig. 44: Electrical wiring diagram

A: Outdoor unit BL 262-352 DC AT
B: Indoor unit BL 262-352 DC IT

1: Power supply
2: Communication line

32

Connection of optional condensate pump KP 6 / KP 8

L N PE

L N PE

L(1) 1 2(N) S

L(1) 1 2(N) S

L
N

WH

BK

A

B

C

1

2

3

Fig. 45: Electrical wiring diagram

A: Outdoor unit
B: Indoor unit
C: Condensate pump KP 6 / KP 8
1: Power supply

2: Condensate pump supply
3: Condensate pump fault contact
BK: Black
WH: white

33

3

4

CE-KFR26G/BP3N1Y-11M.D.11.NP2-1

202302130860

L_IN

CN10A

CN12_2

CN11

CN16

CN12_1

CN5

CN4

CN9

CN8

L_OUT

SW1

3

54

2

1

B

A

6

REMKO BL...DC

8.5 Electrical drawings

Indoor units BL 262-352 DC IT

Fig. 46: Electrical drawings

A: Supply line (L_IN = 1, L_OUT = L)
B: Supply line (CN = N)
1: Display
2: Air circulation probe

3: Evaporator probe
4: Swing motor 2
5: Evaporator fan motor
6: Ion generator

34

Outdoor units BL 262-352 DC AT

X

CN302

CN303

CN8

CN10

CN11

CN301

CN13

CN12

CN15

3

4

CN401

CN400

CN9

CN104

CN103

CN102

CN100

CE-KFR26W/BP3(PFC).D.13.WP2-1 202302130906

3

7

A

1

6

5

2

4

Fig. 47: Electrical drawings

A: Supply and indoor unit supply
1: 4-way valve
2: Condenser fan
3: Injection valve

4: Heat gas probe
5: Outside air probe, Condenser probe
6: Reactor
7: Compressor

35

REMKO BL...DC

9 Before commissioning

Perform the following checks prior to putting the
unit into operation for the first time and after any
work on the cooling cycle. Record the results in the
commissioning report:

n Check all refrigerant piping and valves for leak-

tightness using leak detection spray or soapy
water.

n Check the refrigerant piping and insulation for

damage.

n Check the electrical connection between the

indoor unit and the outdoor unit for correct
polarity.

n Check that all fastenings, mountings, etc. are

firm and at the correct level.

10 Commissioning

NOTICE!

Commissioning should only be performed by
specially trained personnel and documented
after the certificate has been issued. Observe
the operating manuals for the indoor unit and
outdoor unit when commissioning the entire
system.

Once all the components have been connected
and tested, the system can be put into operation. A
functional check should be performed to verify its
correct function and identify any unusual operating
behaviour prior to handing it over to the operator.

NOTICE!

Check that the shut-off valves and valve caps
are tight after carrying out any work on the
cooling cycle. Use appropriate sealant prod­ucts as necessary.

Functional checks and test run

Check the following points:

n Leak-tightness of the refrigerant piping.
n Compressor and fan running smoothly.
n In cooling mode, cold air output by the indoor

unit, and warm air output by the outdoor unit.

n Function test of the indoor unit and all program

sequences.

n Check of the surface temperature of the suc-

tion pipe and that the vaporiser is not over­heating. To measure the temperature, hold the
thermometer to the suction pipe and subtract
the boiling point temperature reading on the
pressure gauge from the measured tempera­ture.

n Record the measured temperatures in the

commissioning report.

36

Function test of the cooling and heating modes

1. Remove the protective caps from the valves.

2. Start the commissioning procedure by briefly

opening the shut-off valves on the outdoor
unit until the pressure gauge indicates a
pressure of approx. 2 bar.

3. Check all connections for leaks with leak
detection spray and suitable leak detectors.

4. If no leaks are found, fully open the shut-off
valves by turning them anti-clockwise using a
spanner. If leaks are found, remedy the faulty
connection. It is imperative that the vacuum
creation and drying steps are repeated.

5. Activate the main circuit breaker or fuse (to
be provided by the customer).

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

7. Check the overheating, outside, inside, outlet
and vaporisation temperatures and record
the measured values in the commissioning
report. Check the correct function and set­tings of all regulation, control and safety
devices.

8. Check the unit control system using the func­tions described in the chapter "Operation".
Timer, temperature setting, fan speeds and
switching to ventilation or dehumidification
mode.

9. Check the correct function of the condensate
drainage line by pouring distilled water into
the condensate tray. A bottle with a spout is
recommended for pouring the water into the
condensate tray.

10. Switch the indoor unit to heating mode.

11. During the test run, check the functionality of

all of the previously described safety devices.

12. Record the measured values into the com­missioning report and familiarise the operator
with the system.

13. Remove the pressure gauge. Check that
seals have been fitted in the sealing caps.

14. Re-install all disassembled parts.

37

REMKO BL...DC

11 Troubleshooting, fault analysis and customer service

11.1 Troubleshooting and customer service

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

Operational malfunctions

Malfunction Possible causes Checks Remedial measures

The unit does not start or
switches itself off.

Power failure, under­voltage, defective mains
fuse / main switch in
OFF position

Damaged power supply Does all other elec.

Wait time after switching
on is too short

Temperature outside
operating range.

Electrical surges caused
by thunderstorms

Malfunction of the
external condensate
pump

High-pressure / low-pres­sure switches have trig­gered

Does all other electrical
equipment function cor­rectly?

equipment function cor­rectly?

Have approx. 5 minutes
elapsed since the
restart?

Are the fans in the indoor
unit and outdoor unit
working correctly?

Have there been light­ning strikes in the area
recently?

Has the pump shut down
due to a malfunction?

Check refrigerant pres­sure and look for leaks if
necessary

Check the voltage and if
necessary, wait for it to
come back on.

Repair by specialist firm

Schedule longer wait
times

Observe temperature
ranges of indoor unit and
outdoor unit

Switch off the mains
breaker and switch it
back on. Have it
inspected by a specialist

Check and if necessary
clean the pump

Rectify leakage and re­start

The unit does not
respond to the remote
control

Transmission distance
too far / receiver affected
by interference

Defective remote control Is the unit running in

Receiver or transmitter
unit exposed to exces­sive solar radiation

Electromagnetic fields
are interfering with trans­mission

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

Batteries in remote con­trol are flat

Does the indoor unit
beep when pressing a
key?

manual mode?

Does it function correctly
in the shade?

Does it function after
removing potential
sources of interference?

Does the “Transmitting”
symbol appear on the
display?

Have new batteries been
inserted? Is the display
incomplete?

Reduce the distance to
less than 6m or change
position

Replace the remote con­trol

Place the receiver and/or
transmitter unit in the
shade

Signal is not transmitted
when interference
sources are operational

Release the key / only
press one key

Insert new batteries

38

Malfunction Possible causes Checks Remedial measures

The unit is running but
only provides reduced or
no cooling or heating
output.

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

Windows and doors
open. Heating / cooling
load has increased

Neither cooling nor
heating mode has been
set

Fins on outdoor unit
blocked by foreign
objects

Leaking cooling cycle Are there signs of frost

Outdoor unit iced up Check outdoor unit. Has

Drainage pipe on collec­tion container clogged /
damaged

Have the filters been
cleaned?

Have structural / usage
modifications been
made?

Does the cooling symbol
appear on the display?

Does the fan of the out­door unit work? Are the
exchanger fins unob­structed?

on the exchanger fins of
the indoor unit?

the cassette probe on
the outdoor unit been
correctly positioned?

Can the condensate
drain off without any
obstruction?

Clean the filters

Close windows and
doors / install additional
units

Correct the settings for
the unit

Check the fan or winter
fan speed control,
reduce the air resistance

Repair by specialist

De-ice and fit the probe
at the point where the
most ice forms

Clean the drainage pipe
and collection container

Condensate discharge
on unit

Faulty external conden­sate pump or float

Condensate has not
drained away and has
collected in the conden­sate drainage line

Condensate does not
drain off

Float is stuck or jammed
due to excessive dirt.

Is the collection tray full
of water and the pump
not running?

Is there an incline on the
condensate drainage
line? Check there is no
blockage in the pipe.

Are the condensate
drainage lines unblocked
and is there a steady
incline? Are the conden­sate pump and liquid
level switch functioning
correctly?

Are the LEDs on the
receiver unit of the
indoor unit flashing?

Call out a specialist to
replace the pump

Ensure there is an incline
when laying the conden­sate drainage line and
clean the pipe.

Route the condensate
drainage line with an
incline and clean it. If the
liquid level switch or the
condensate pump is
defective, have them
replaced.

Should be cleaned by
specialist firm

39

YES

NO

YES

REMKO BL...DC

Malfunction on the indoor unit

Indica­tion

E0 EEPROM error See error analysis

E1

E2 Phase monitoring has responded Check wiring

E3 Evaporator fan motor speed too low / defective See error analysis

E4

E5

EC

F1

F2

F3

Cause Required action

Communication error between outdoor and
indoor unit

Ambient air probe on indoor unit defective /
connection interrupted (T1)

Register probe on indoor unit defective /
connection interrupted (T2)

Cooling mode: no cooling output after 30 min.

Heating mode: no heating output after 30 min.

Ambient air probe for outdoor unit faulty /
connection interrupted (T4)

Register probe on outdoor unit defective /
connection interrupted (T3)

Heat gas probe on outdoor unit faulty /
connection interrupted (T5)

Contact specialist dealer

Check connection and plug

Check connection and plug

Contact specialist dealer

Check connection and plug

Check connection and plug

Check connection and plug

F4 EEPROM error on outdoor unit

F5 Condenser fan speed not alright See error analysis

P0

P1 Overload switch on outdoor unit tripped (250V) Check the voltage of the power supply

P2

P3

Rotational speed monitoring on compressor
has responded (inverter module)

Excessive temperature (Klixon) compressor
has tripped

Compressor overcurrent protection
has responded

Switch off power to unit for 1 min.
Contact specialist dealer.

Check connections CN4 and CN1 on the out­door unit PCB / Contact specialist dealer

Check the refrigerant quantity / Check the
resistance of the compressor sensor (normal
0Ω)

Check winding resistance of the compressor
(1Ω = U-V / U-W / V-W)

11.2 Diagnosis and solution indoor unit

Error E0: EEPROM parameter error

Shut off the power supply and turn it on 5 sec-

onds later. Is it still displaying the error code?

Is the EEPROM chip plugged in PCB well?

Correct the connection.

Replace the ind.

40

Error E1: Indoor/outdoor units communication error

YES

YES

NO

YES YES

YES

NO

NO

YES

Power off, then turn on the unit 5 seconds later
(reconnect the power wire). Is the erorr still dis-

playing after several minutes?

Check all the wirings between indoor and out-

door, indoor PCB and outdoor PCB following

the wiring diagram. Are all the wirings con-

nected correctly?

Is -24V<Vs<+24V?

(Vs is the voltage between S and N of outdoor

unit).

Is the wiring to the outdoor PCB connected cor-

rectly?

Change the outdoor main PCB.

Is the wiring to the indoor PCB connected cor-

rectly?

Change the indoor PCB.

Power on. Is the error extinguished?

Error E2: Zero crossing detection error

Check if the connections and power supply is

normal?

Indoor PCB is defective. Replace indoor PCB.

Correct the connections. Turn on the unit when

the power supply is good.

41

NO

YES

NO

YES YES

NO

NO

YES

NO

YES

NO

YES

NO

YES

REMKO BL...DC

Error E3: Indoor fan speed has been out of control

Shut off the power
supply and turn it on
5 seconds later. Is it

still displaying the

error code?

Shut off the power

sopply, rotate the

cross fan by hand.

Does it rotate prop-

erly?

Check the wires of

fan motor. Are all

the connections

good?

Correct the connec-

tions.

The unit operates normally.

Disassembly the connection between fan

and motor, check if the bearing is normal?

Replace indoor fan

motor.

Replace the

bearing.

Check the resist-

ance value of indoor

fan motor, is it

normal?

Replace indoor

PCB.

Error E3-E4 and F1-F3 : sensor error

Check the connections between temperature

sensor and PCB. Are the connections good?

Check the resistance of the sensor. Use the

resistance-sensor. Does the Resistance of the

sensor with the value in the table match?

Replace indoor fan

motor.

Correct the connetions.

Replace the sensor.

Replace indoor or outdoor PCB.

42

Error EC: Refrigerant leakage detection

YES

YES

NO YES

YES

NO

YES

Shut off the power supply and turn it on 5 sec-

onds later. Is it still displaying the error code?

Is there cool air blowing out from indoor air

outlet?

Is there any leakage? Especially the connec-

tions parts, such as the gas valve and the liquid

valve.

Is there any blocking? (such as the capillary or

the welded points of the pipes).

Clear the blocking.

Check if T2 sensor is well fixed. Correct the

installation or replace T2 sensor. Does the

problem remain again?

Replace indoor PCB.

Repair the leakage and recharge the refrig-

erant.

43

NO

YES

NO

YES YES

NO

NO

YES

NO

YES

NO

YES

REMKO BL...DC

Error F5: Condenser fan speed not alright

Shut off the power supply and turn it on 5

seconds later. Is it still displaying the error

code?

Shut off the power sopply, rotate the cross

fan by hand. Does it rotate properly?

The unit operates normally.

Disassembly the connection

between fan and motor,

check if the bearing is

normal?

Check the wires of fan motor. Are all the

connections good?

3

4

6

Correct the

connections.

Replace

indoor fan

motor.

Replace

5

indoor fan

motor.

Replace the

bearing.

44

Error P0: IPM malfunction or IGBT over strong current protection

NO

YES

NO

YES

NO

YES

YES

NO

YES

NO

YES

YES

Check if the wiring between module PCB and

compressor connected correctly.

IPM continuity check. Check if the IPM terminal

resistance values are uniform.

Check if the IPM installed correctly. Check if the

outdoor fan can run properly

Replace outdoor control PCB. Does the

problem still remain?

Replace the compressor.

Error P1: Over voltage or over low voltage protection

Correct the connection.

Replace the module PCB.

Correct the installation, tighten the screws and
apply silicon grease. Correct the connection of

fan motor or reolace the fan motor.

Check if the power supply is normal.

Check if all the connections are good

Check if the voltage between P and N is around

DC 320V

Replace outdoor control PCB.

Disconnect the unit with power supply and try to
restart the unit when power supply gets normal.

Correct the connections.

45

YES

NO

YES

NO

YES

NO

YES

NO

REMKO BL...DC

Error P2: High temperature protection of compressor top

Check if the air flow system of indoor and out-

door units are obstructed?

Turn off the power supply and turn it on 10

minutes later.

Check if the unit can start normally

Refrigerant system is blocked, such as capillary

or weled point of pipes.

Error P3: Compressor drive error

Check all the wires between control PCB,

module PCB and compressor.

Clear up the air inlet and outlet or the heat

exchanger of indoor and outdoor units.

Check if all the connection, especially the con-

nection of OLP (Over Load Protector) sensor is

good.

Correct the connections.

IPM continuity check. Check if the IPM terminal

resistance values are uniform.

Replace the compressor.

46

Resistance values of the sensors T1, T2, T3 and T4

W

T

T5

T1, T2, T3, T4

Temperature
(°C)

Resistance value
(kW)

Resistance value of the sensor T5

Temperature
(°C)

Resistance value
(kW)

Temperature / resistance

5 10 15 20 25 30 40 50 60

26,9 20,7 16,1 12,6 10,0 8,0 5,2 3,5 2,4

5 15 25 35 60 70 80 90 100

141,6 88 56,1 36,6 13,8 9,7 6,9 5,0 3,7

Fig. 48: Temperature / resistance

W: Resistance (kW) T: Temperature (°C)

47

REMKO BL...DC

12 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!

Care

n Ensure the unit is protected against dirt, mould

and other deposits.

n Only clean the unit using a damp cloth. Do not

use any caustic, abrasive or solvent-based
cleaning products. Do not use a jet of water.

n Clean the fins on the unit prior to long shut-

down periods.

Maintenance

n It is recommended that you take out a mainte-

nance contract with an annual service from an
appropriate specialist firm.

This enables you to ensure the operational reli­ability of the plant at all times!

NOTICE!

Statutory regulations require an annual leak
test for the cooling cycle dependant on the
refrigerant quantity. Inspection and documenta­tion of the work performed is to be carried out
by specialist technicians.

Type of task

Checks/maintenance/inspection

General

Check voltage and current

Check function of compressor/fans

Dirt on condenser/evaporator

Check refrigerant fill quantity

Check condensate drainage

Check insulation

Check moving parts

Sealing test for cooling cycle

1)

See note

Commis-

sioning

l

l

l

l l

l

l

l

l

l

Monthly Every 6

months

l

l

Yearly

l

l

l

l

l

1)

l

48

Cleaning the housing

1. Disconnect the power supply to the unit.

2. Open and fold the air inlet grill on the front

side upwards.

3. Clean the grill and cover with a soft, damp
cloth.

4. Switch the power supply back on.

Air filter for indoor unit

Clean the air filter at intervals of no more than 2
weeks. Reduce this interval if the air is especially
dirty.

Cleaning the filter

1. Disconnect the power supply to the unit.

2. Open the front side of the unit by folding the

grill upwards and allowing it to engage
(Fig. 49).

3. Raise the filter and pull it out in a downwards
direction (Fig. 49).

4. Clean the filter with a commercially available
vacuum cleaner (Fig. 50
dirty side so it is facing upwards.

5. Dirt can also be removed by carefully
cleaning with lukewarm water and mild
cleaning agents (
should be face down.

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

Fig. 51). The dirty side

). To do so, turn the

Fig. 49: Folding the grill upwards

Fig. 50: Cleaning with a vacuum cleaner

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

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

9. Switch the power supply back on.

10. Switch the unit back on.

Cleaning the condensate pump (accessories)

The indoor unit may contain an optional integrated
or separate condensate pump, which pumps out
any accumulated condensate into higher posi­tioned drains.

Observe the care and maintenance instructions in
the separate operating manual.

Fig. 51: Cleaning with lukewarm water

49

REMKO BL...DC

13 Exploded view and spare parts lists

13.1 Exploded view - Indoor unit

Fig. 52: Exploded view of the unit BL 262-352 DC IT

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

50

13.2 Spare parts list - Indoor unit

No. Designation BL 262 DC IT BL 352 DC IT

1 Front panel, complete

2 Air filter, set

3 Circuit board, display

4 Swing motor

5 Air exhaust fins, set

6 Housing incl. condensate tray

7 Evaporator

8 Fan wheel

9 Fan motor

10 Control board

11 IR remote control

12 Ambient air probe

13 Evaporator probe

14 Quick-release coupling set, indoor unit

Spare parts not illustrated

Ion generator module

When ordering spare parts, please always state the serial no., unit number and unit type (see name plate)!

On request by providing the

serial number

On request by providing the

serial number

51

REMKO BL...DC

13.3 Exploded view - Outdoor unit

Fig. 53: Exploded view of the unit BL 262-352 DC AT

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

52

13.4 Spare parts list - Outdoor unit

No. Designation BL 262 DC AT BL 352 DC AT

1 Front panel

2 Fan blade, condenser

3 Fan motor, condenser

4 Condenser

5 Cover panel

6 Side part

7 Compressor, cpl.

8 Shut-off valve, suction pipe

9 Shut-off valve, liquid pipe

10 Reversing valve

On request by providing the

serial number

11 E-box, cpl., incl. control board

12 Choke

13 Temperature probes, set

14 Quick-release coupling set, outdoor unit

15 Refrigerant piping incl. quick-release coupling 3m

15 Refrigerant piping incl. quick-release coupling 5m

15 Refrigerant piping incl. quick-release coupling 8m

When ordering spare parts, please always state the serial no., unit number and unit type (see name plate)!

14 Shutdown

Temporary shutdown

1. Let the indoor unit run for 2 to 3 hours in

recirculation mode, or in cooling mode at
maximum temperature, to extract any
residual humidity from the unit.

2. Shut down the system using the remote con­trol.

3. Switch off the electrical power supply to the
unit.

4. Cover the unit as far as possible with plastic
foil in order to protect it from the influences of
weather.

Permanent shutdown

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

REMKO GmbH & Co. KG or your contractual
partner will be pleased to provide a list of certified
firms in your area.

53

REMKO BL...DC

15 Index

A

Alarms

Checks .............................38

Possible causes ......................38

Remedial measures ...................38

Assembly

Strip foundation ......................29

C

Care and maintenance ...................48

Cleaning

Air filter for indoor unit .................49

Condensate pump ....................49

Housing ............................49

Condensate drainage connection and safe

drainage ..............................29

Condensate pump, electrical wiring diagram ..33

Customer service .......................38

D

Disposal of equipment .....................7

E

Electrical drawings ...................34, 35

Electrical wiring .........................31

Electrical wiring diagram ..................32

Electrical wiring diagram, condensate pump ..33

Environmental protection ...................7

Exploded view of the unit ..............50, 52

F

Function test of the cooling and heating modes

Functional checks .......................36

37

I

Infrared remote control ...................14

Installation location, selection ..............23

Installation materials .....................22

Intended use ............................6

K

Keys on the remote control ................15

M

Maintenance ...........................48

Malfunction on the indoor unit ..............40

Manual mode ..........................14

Minimum clearances .....................24

O

Oil return measures ......................25

Operation

Infrared remote control .................14

Manual .............................14

Ordering spare parts ..................51, 53

P

Performance charts

Cooling ..........................11, 12

Heating ..........................11, 12

Propellant in accordance with Kyoto Protocol ...9

Q

Quick-release couplings ..................27

R

Remote control

Keys ...............................15

S

Safe drainage in the event of leakages .......30

Safety

Dangers of failure to observe the safety

notes ...............................5

General .............................5

Identification of notes ...................5

Notes for inspection ....................6

Notes for installation ....................6

Notes for maintenance ..................6

Personnel qualifications .................5

Safety notes for the operator .............6

Safety-conscious working ................5

Unauthorised modification ...............6

Unauthorised replacement part manufacture

Selection of installation location ............23

Shutdown

Permanent ..........................53

Temporary ..........................53

Spare parts list ......................51, 53

. 6

T

Test run ...............................36

Troubleshooting and customer service .......38

U

Unit installation .........................26

W

Wall bracket ...........................25

Wall opening ...........................22

Warranty ...............................6

54

Consulting

Thanks to intensive training,
our consultants are always
completely up-to-date in terms
of technical knowledge. This has
given us the reputation of being
more than just an excellent,
reliable supplier:
REMKO, a partner
helping you find solutions to
your problems.

Distribution

REMKO offers not just a well
established sales network both
nationally and internationally, but
also has exceptionally highly­qualified sales specialists.
REMKO field staff are more than
just sales representatives: above
all, they must act as advisers to
our customers in air conditioning
and heating technology.

SFlbCustomer Service

Our equipment operates
precisely and reliably. However,
in the event of a fault, REMKO
customer service is quickly at
the scene. Our comprehensive
network of experienced dealers
always guarantees quick and
reliable service.

REMKO INTERNATIONAL

… and also right in your neighbourhood!
Make use of our experience and advice

We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!

REMKO GmbH & Co. KG
Air conditioning and heating technology

Im Seelenkamp 12 D-32791 Lage
Postfach 1827 D-32777 Lage
Telephone [phone]
Telefax [phone]
E-mail [e-mail]
Website www.remko.de