REMKO BL 263 DC, BL 353 DC, BL 263 DC IT, BL 353 DC AT, BL 353 DC IT Assembly And Operating Instructions Manual

Assembly and operating instructions

REMKO BL...DC

BL 263 DC, BL 353 DC

Inverter wall-mounted room air conditioner with split design

with quick-coupling system

0125-2016-02 Edition 1, 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

3 Design and function............................................................................................................................ 11

3.1 Unit description............................................................................................................................. 11

4 Operation............................................................................................................................................. 12

4.1 General notes................................................................................................................................ 12

4.2 Display on indoor unit.................................................................................................................... 13

4.3 Keys on the remote control........................................................................................................... 13

5 Installation instructions for qualified personnel.............................................................................. 20

5.1 Important notes prior to installation............................................................................................... 20

5.2 Wall openings................................................................................................................................ 20

5.3 Installation materials..................................................................................................................... 20

5.4 Selection of installation location ................................................................................................... 21

5.5 Minimum clearances..................................................................................................................... 23

5.6 Connection variants for the indoor unit......................................................................................... 24

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

6 Installation........................................................................................................................................... 25

6.1 Installation of the indoor unit......................................................................................................... 25

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

6.3 Connection of quick-release couplings......................................................................................... 26

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

7 Condensate drainage connection and safe drainage...................................................................... 28

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Electrical wiring................................................................................................................................... 30

8.1 General Information...................................................................................................................... 30

8.2 Connecting the indoor unit............................................................................................................ 30

8.3 Outdoor unit connection................................................................................................................ 31

8.4 Electrical wiring diagram............................................................................................................... 31

8.5 Electrical drawings........................................................................................................................ 33

9 Before commissioning....................................................................................................................... 35

10 Commissioning................................................................................................................................... 35

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REMKO BL...DC

11 Troubleshooting and customer service............................................................................................ 37

11.1 Troubleshooting and customer service....................................................................................... 37

11.2 Indoor unit fault analysis............................................................................................................. 39

12 Care and maintenance........................................................................................................................ 52

13

Shutdown............................................................................................................................................. 54

14 Exploded view and spare parts lists................................................................................................. 55

14.1 Exploded view - Indoor unit......................................................................................................... 55

14.2 Spare parts list - Indoor unit........................................................................................................ 56

14.3 Exploded view, outdoor unit........................................................................................................ 57

14.4 Spare parts list - Outdoor unit..................................................................................................... 58

15 Index..................................................................................................................................................... 62

4

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 263 DC BL 353 DC

Operating mode

Nominal cooling output

1)

Energy efficiency ratio SEER

1)

kW

Inverter wall-mounted room air conditioner com-

bination for cooling and heating

2.60 (0,70-3.22) 3.50 (1.06-4.10)

5.2 6.2

El. power consumption, cooling kW 0.08-1.24 0.09-1.58

El. current consumption, cooling A 0.3-5.4 0.4-6.9

Power consumption, annual, QCE

Energy efficiency ratio, cooling

Nominal heat capacity

2)

Energy efficiency ratio SCOP

3)

1)

4)

kWh 175 198

A A++

kW

2.30 (0,82-3.37) 2.40 (0.85-4.28)

4.0 4.0

El. power consumption, heating kW 0.14-1.20 0.14-1.53

El. current consumption, heating A 0.6-5.2 0.6-6.7

Power consumption, annual, QHE

Energy efficiency ratio, heating

3)

2)

kWh 805 840

A+ A+

Max. power consumption kW 2.1 2.2

Max. current consumption A 9.5 10.0

EDP no. 1629265 1629355

1)

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

5 m pipe length

2)

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

3)

The specified value is based on results from standard testing.

The actual consumption depends on the use and location of the unit

4)

The specified value is based on the average heating period

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Data specific to indoor unit BL 263 DC IT BL 353 DC IT

Application area (room volume), approx.

m

3

80 110

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

Air flow volume per level m³/h 270/320/420 370/470/570

Sound pressure level per speed setting

Sound pressure level, Silent/Turbo mode

Sound power level max.

5)

5)

5)

dB (A) 30/36/41 28/35/42

dB (A) 24/42 23/43

dB(A) 54

Enclosure class IP X 0

Condensate drainage connection mm 18

Dimensions: H/W/D mm 285/715/194 285/805/194

Weight kg 6.7 7.1

EDP no. 1629267 1629357

5)

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

Data specific to outdoor unit BL 263 DC AT BL 353 DC AT

Power supply

V/Ph/

Hz

230/1~/50

Operating range, cooling °C +5 to +50

Operating range, heating

7)

°C +5 to +30

Air flow rate, max. m³/h 1800

Enclosure class IP 24

Sound power level max.

Sound pressure level

Refrigerant

6)

5)

5)

dB (A) 58 60

dB (A) 56

R 410A

Refrigerant, basic capacity kg 0.74

CO2 equivalent t 1.54

Max. operating pressure kPa 4200 / 1500

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

Refrigerant piping, max. height m 5 5

Dimensions: H/W/D mm 555/770/300

Weight kg 26.3 25.7

EDP no. 1629266 1629356

5)

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

6)

Contains greenhouse gas according to Kyoto protocol, GWP 2088

7)

This can be extended to -20 °C with the appropriate accessory kit

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2.2 Unit dimensions

Outdoor units

Fig. 1: Outdoor unit dimensions BL 263-353 DC AT

Dimensions (mm) A B C D E

BL 263-353 DC AT 770 555 300 487 298

Indoor units

Fig. 2: Indoor unit dimensions BL 263-353 DC IT

Dimensions (mm) A B C

BL 263 DC 715 285 194

BL 353 DC 805 285 194

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

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3 Design and function

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3.1 Unit description

The BL 263-353 DC room air conditioners have a
REMKO BL...AT outdoor unit as well as a 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. 4: 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. 5: System layout

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

Fig. 3: Cooling cycle diagram for indoor unit

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

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

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

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REMKO BL...DC

4 Operation

4.1 General notes

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

Manual mode

The indoor unit can also be switched on manually
if the infrared remote control is lost/defective.
Manual operation is intended for emergency oper­ation and is not suitable for basic unit operation.
Please replace the remote control. The key for
manual activation is located below the housing
cover on the right side.

The following settings apply for manual operation:

Pressing once: Automatic mode,

Pressing twice: Cooling mode,

Pressing three times: Unit OFF

Fig. 6: 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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4.2 Display on indoor unit

The display illuminates according to the settings.

Fig. 7: Display on indoor unit

1: Display

4.3 Keys on the remote control

"MODE" key

Operating mode selection. This key is used to set
the desired operating mode. The automatic,
cooling, dehumidification, heating and recirculation
modes are available.

"FAN" key

Fan speed Use this key to select the desired fan
speed. The automatic, low, medium and high func­tions are available. Note: In the dehumidification
operating mode, the fan speed cannot be set man­ually.

"SLEEP" key

Activates/deactivates the "SLEEP" function.

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.

Fig. 8: Keys on the remote control

"ON/OFF" key

Press this key to switch the air conditioning unit on
and off.

"FRESH" key

Press this key to activate/deactivate the ion gener­ator (air freshener).

"TURBO" key

Activation of the turbo function makes it possible to
reach the setpoint in cooling or heating mode as
fast as possible.

"SELF CLEAN" key (optional)

This activates the self-clean function on the unit.

"UP ARROW" and "DOWN ARROW" keys

Press this key to increase the setpoint in steps of 1
°C up to a maximum of 30°C.

Press this key to decrease the setpoint in steps of
1°C to a minimum of 17°C.

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„SILENCE/FP“ key

Activates/deactivates the silent mode. Pressing the
key for longer than 2 seconds activates the unit's
frost protection function.

In silent unit mode, the compressor runs at a lower
frequency, and the indoor unit fan rotates at a
slower speed. This obtains particularly silent unit
operation.

The frost protection function can only be activated
in heating mode. The unit operates with a fixed
setpoint of 8°C. The indoor unit displays "FP".
Pressing the ON/OFF, SLEEP, FP, Mode, FAN or
up or down arrow key, the frost protection function
is deactivated. Press the this key to activate the
unit start delay time.

"TIMER ON" key

This key initiates the automatic switch-on time for
the unit. Each press of this key increases the delay
time by 30 minutes. When the set time on the dis­play exceeds 10.0, each press of the button
increases the set time by 60 minutes. To deacti­vate the delay time, set the time to 0.0.

"TIMER OFF" key

This key can be used to program the delayed
switch-off time. Each press of this key increases
the switch-off time by 30 minutes. When the set
time on the display exceeds 10.0, each press of
the button increases the set time by 60 minutes.
To deactivate the switch-off time, set the time to

0.0

3-D swing mode

Press this key to start or stop the swing mode.
With the 2-point key, you can adjust the horizontal
fin on the left side and the vertical fin on the right
side. Press this key once to change the angle by 6
degrees. Pressing the key for 2 seconds stops the
swing function. When the swing function is
stopped, LC appears on the display for three sec­onds.

"FOLLOW ME" key

This key can be used to activate/deactivate the
FOLLOW ME function. In this mode, the room tem­perature is measured on the remote control. This
sends a signal to the indoor unit every 3 minutes. If
the remote control does not send a signal to the
indoor unit for 7 minutes, this mode is automati­cally deactivated.

This activates/deactivates the display on the indoor
unit.

Indicators on the LCD

Fig. 9: Indicators on the LCD

1: Mode display - shows the current operating

modes including Auto ( ), Cooling( ), Dehu­midifying ( ), 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: ECO function (not available)
6: TIMER OFF symbol. This symbol appears

when TIMER OFF is switched on.
7: Battery status (weak)
8: Sleep symbol. This symbol appears when the

"Sleep" function is activated. Pressing this key

again causes the indicator to go out.
9: Temperature/Timer symbol. Shows the tem-

perature setting (-17°C~30°C). If "FAN" mode

is selected, the temperature setting is not dis-

played. In Timer mode, the ON and OFF set-

tings appear for the TIMER.
10: FOLLOW ME symbol. This symbol appears

when the "Follow me" function is activated.
11: Ion generator display active (optional)
12: 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.

13: Silent mode active (optional)

"LED" key

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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.

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

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

"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 the air
conditioning unit on.

Fig. 10: "Auto" mode

In "automatic" mode, the cooling unit automati­cally selects among cooling, recirculation and
heating operation and tries to reach the set­point set on the remote control

Fig. 11: "Cooling", "Heating" and "Recirculation"
mode

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REMKO BL...DC

"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.

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

2. The temperature setting on the remote con­trol has no effect on unit operation.

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

"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

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. 12: "Dehumidification" mode

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

Fig. 13: "Timer" mode

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Start

Off

2 hours laterSet time

Stop

On

4 hours laterSet time

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.

Example TIMER function settings

"TIMER ON" (Auto on mode)

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

3. Wait for 3 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. 14: "TIMER ON" example

"TIMER OFF" (Auto off mode)

Example:

You want the air conditioning unit to switch off 4
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 3 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. 15: "TIMER OFF" example

17

On

Set time

Stop

Start

2 hours later
after setting

10 hours later
after setting

Off

Set time

Stop

Start

2 hours later
after setting

5 hours later
after setting

REMKO BL...DC

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

"TIMER OFF ð "TIMER ON"

(On ð Stop ð Start)

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 the

desired stop time 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 3 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.

"TIMER ON ð

"TIMER OFF"

(Off ð Start ð Stop)

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 3 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. 16: "TIMER OFF" / "TIMER ON" example

Fig. 17: "TIMER ON" / "TIMER OFF" example

18

SLEEP function

1

Setpoint

After 7 hours
unit OFF

1 hr

1 hr

The sleep function saves energy while you sleep.
This function is activated by pressing the key on
the remote control. Press the key before going to
sleep. In cooling mode, the unit automatically
increases the set room temperature by 1 °C after 1
hour. After one more hour, the room temperature is
increased by an additional 1 °C. In heating mode,
the room temperature is decreased within the first
two hours of operation by 2°C. After 7 hours of unit
operation, the unit switches automatically off in
cooling and heating mode.

This function is not available in the recirculation
and dehumidification operating modes!

Fig. 18: "Sleep" function

Fig. 19: Sleep function

19

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 65 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. 20: 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.

20

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.

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.
An additional stabilization is recommended. This
can, for example, be realized with ropes or other
structures.

Fig. 21: Windbreak

1: Wind

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. 22: 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 (

Fig. 23).

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. 23).

n Comply with any regulations and conditions

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

21

2

1

K

3

W

3

REMKO BL...DC

Fig. 23: Installation inside buildings

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

22

5.5 Minimum clearances

2

1

E

C

A

B

F

IT AT

2

1

A

B

C

D

E

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

Fig. 24: Minimum clearances of the indoor unit and outdoor unit

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

Dimensions

(mm)

Indoor units Outdoor units

BL 263-353 DC IT BL 263-353 DC AT

A 120 300

B 1500 2000

C 120 600

D - 300

E 120 600

F 200 -

23

C

B

C

A

B

A

REMKO BL...DC

5.6 Connection variants for the indoor unit

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

Fig. 25: Connection variant (view from the rear)

A: Infeed of the refrigerant piping at the wall, left
B: Outlet through the wall, right

C: Outlet on the wall, right

24

5.7 Wall bracket for the indoor unit

A

B

D

G

C

E

F

H

Fig. 26: Mounting points for the wall bracket BL 263-353 DC IT (rear view, all dimensions in mm)

Unit type /
dimensions

BL 263 DC IT 350 365 45 47 115 213 548 167

BL 353 DC IT 395 410 44 47 115 245 580 225

(All dimensions in mm)

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.

A B C D E F G H

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. 27)

Fig. 27: Horizontal positioning

The wall bracket for the units must be attached

25

with suitable screws and anchors.

REMKO BL...DC

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!

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 unit 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.

Please note that the following figures are only
schematic representations. The actual appear­ance of the units may vary from those shown.

1. Remove the pre-installed plastic cover from

the outdoor unit(

Fig. 28).

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.

Fig. 28: 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. 29 and Fig. 30).

Fig. 29: Remove protective caps

26

Fig. 30: Remove protective caps

2

1

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

Fig. 31).

Fig. 33: 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!

Fig. 31: 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. 32: Installation on the indoor unit

Pipe dimension

in inches

1/4" 15-20

3/8" 33-40

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. Then tighten the fittings with 2 appropriately-

sized open-ended spanners. Use one
spanner to counter the force when tightening
the fitting (Fig. 33).

27

3

2

4

9

5 5

11

100

6

8

7

10 10

12 12

1

REMKO BL...DC

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 2088. That means the escape of 1 kg of
this refrigerant has an effect on global warming
that is 2088 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.

7 Condensate drainage

connection and safe
drainage

Fig. 34: 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

28

EB

B

A

D

C

11

1

5

5

8

1

9

3

Fig. 35: Dimensions for the strip foundation (bird's

min. 2%

eye view)

For the designations of 1,3,5,8,9 and 11, please
refer to the legend for the Fig. 34

dimensioning of the strip foundation

Dimen-

sion

Value in mm

A 800

B 200

C 487

D 300

E 287

Fig. 36: 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.

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.

NOTICE!

If condensate is removed via a duct in accord­ance with DIN EN 1717, ensure that any micro­biological contamination present on the waste­water side (bacteria, fungi, viruses) cannot
enter the unit connected to it.

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.

29

2

1

4

3

1

REMKO BL...DC

8 Electrical wiring

8.1 General Information

A protected power supply cable is to be connected
to the outdoor unit and a five-core 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. 37).

3. Disconnect the control line from the terminal

block and remove the control line.

4. Connect the customer-laid control line to the

terminals (

5. Join the customer-laid control line to the sup-

plied control line in a professional manner.

6. Insert the control line plug into the corre-

sponding socket on the outdoor unit.

7. Re-assemble the unit.

Fig. 37).

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. 37: Connecting the indoor unit

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

30

BA

230V/1~/50 Hz

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

2

1

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 263-353 DC

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

assemble the unit.

Fig. 38: Outdoor unit connection

Fig. 39: Electrical wiring diagram

A: Outdoor unit BL 263-353 DC AT
B: Indoor unit BL 263-353 DC IT

31

1: Power supply
2: Communication line

L N PE

L N PE

1 2(N) S

1

S

L
N

WH

BK

PE

PE

A

B

C

1

2

3

L(1)

L(1) 2(N)

REMKO BL...DC

Connection of optional condensate pump KP 6 / KP 8

Fig. 40: 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

32

8.5 Electrical drawings

5

YELLOW

Y/G

WHI ET

RED

P1

P2

N_IN

CN31

RY1

L-OUT

L-IN

W

2(N)

S

BLUE(BLACK)

CN18

1(L)

CN3

CN2

CN4

CN1

CN32

4

5

M

CN19

M

CN22

M

5

CN12

P_1

ION

Y/G

CN27

3

CN13

CN26

CN29

CN15

OPTIONAL

5

CN14

1

2

3

5

A

C

6

4

B

D

Indoor units BL 263-353 DC IT

Fig. 41: Electrical drawings

A: Control board
B: Display board
C: Remote control (optional)
D: Outdoor unit connection
1: Temperature probe, recirculation T1

2: Ion generator
3: Evaporator fan motor
4: Swing motor, horizontal
5: Swing motor, vertical
6: Temperature probe, evaporator T2

33

M

M

4-WAY

CN 7

3

CN 31

CN 25

CN 15

CN 60

CN 17

BLUE

BROWN

YELLOW OR BLACK

S

W

2(N)

L

N

RED

BLUE

Y/G

1(L)

Y/G

CN 21

Y/G

CN 1A

Y/G

Y/G

CN 50

3

U

V

W

BLUE

RED

BLACK

1

2

3

5

A

C

6

4

B

7 8

REMKO BL...DC

Outdoor units BL 263-353 DC AT

Fig. 42: Electrical drawings

A: Control board
B: Power supply
C: Indoor unit connection
1: Compressor
2: 4-way valve
3: Crankcase heating (optional)

4: Condensate tray heating (optional)
5: Temperature probe, heat gas line T5
6: Temperature probe, condenser outlet T3
7: Temperature probe, air inlet T4
8: Evaporator fan motor

34

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.

35

REMKO BL...DC

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.

36

11 Troubleshooting 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

Transmission distance
too far / receiver affected
by interference

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?

Does the indoor unit
beep when pressing a
key?

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

Reduce the distance to
less than 6 m or change
position

Defective remote control Is the unit running in

manual mode?

Receiver or transmitter
unit exposed to exces-

The unit does not
respond to the remote
control

The unit works at
reduced or no cooling
capacity

37

sive solar radiation

Electromagnetic fields
are interfering with trans­mission

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

Batteries in remote con­trol are flat

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

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?

Have the filters been
cleaned?

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

Clean the filters

REMKO BL...DC

Malfunction Possible causes Checks Remedial measures

Condensate discharge
on unit

Windows and doors
open. Heating / cooling
load has increased

Cooling mode is not set Does the cooling symbol

Fins on outdoor unit
blocked by foreign
objects

Leaking cooling cycle Are there signs of frost

Drainage pipe on collec­tion container clogged /
damaged

Faulty external conden­sate pump or float

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

Have structural / usage
modifications been
made?

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?

Can the condensate
drain off without any
obstruction?

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.

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

Clean the drainage pipe
and collection container

Call out a specialist to
replace the pump

Route the condensate
drainage line with an
incline and clean.

Condensate does not
drain off

NOTE

If the outdoor unit makes noises at low outside temperatures, even although it is switched off, this is not
a malfunction. This is the winding of the compressor being run briefly in order to heat up the oil within it
and also to guarantee the viscosity at low ambient temperatures. If you do not use the unit in the winter
then you can switch off the breaker. Switch it back on again at least 12 hours before the next time that
the unit will be required!

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

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

38

Fault display on the indoor unit

YES

Display Error description

E0 EEPROM error, indoor unit

E1 Communication error between indoor unit and outdoor unit

E3 Fan speed control indoor unit disabled

E4 Room temperature probe T1 defective

E5 Temperature probe, evaporator T2 defective

F0 Overflow protection

F1 Temperature probe air inlet outdoor unit T4 defective

F2 Temperature probe, evaporator outlet T3 defective

F3 Temperature probe, heat gas line T5 defective

F4 EEPROM error, outdoor unit

F5 Condenser fan speed control probe not working

P0 Compressor actuation error

P1 Over-voltage or under-voltage error

P2 Compressor overheating protection (heat gas temperature too high)

P4 Inverter control disabled

EC No cooling capacity after 30 minutes

For fault elimination refer to troubleshooting on the following pages.

11.2

Error code: E0 / F4

Reason: The control board of the outdoor unit or indoor unit cannot read the unit memory

Cause:

Switch off voltage, switch on again 2 minutes

Indoor unit fault analysis

(EEPROM)

n Installation error
n Control boards of outdoor unit or indoor unit defective

later. Is the error still present?

Replace the circuit boards of the outdoor unit

and indoor unit in turn, in order to locate the

defective EEPROM

39

YES

NO

YES YES

YES

NO

NO

YES

NO

REMKO BL...DC

Error code: E1

Reason: The indoor unit does not receive a signal from the outdoor unit within 110 seconds. The

check is performed 4 times in a row, then error E1 is displayed.

Cause:

Switch off voltage, switch on again 2 minutes

later. Is the error still present?

Measure the voltage between the “S” and “N”

terminals of the outdoor unit. Does the valve

fluctuate between -25 V and 25 V?

Check electrical connections in the outdoor

n Electrical connection not configured correctly
n Control boards outdoor unit or indoor unit defective

unit. Are they OK?

Is the transformer OK?

Check electrical connections in the indoor unit.

Are they OK?

Replace the control boards of the indoor unit. Is

the fault remedied?

Replace the control boards of the outdoor unit

Replace the transformer

Replace the control boards of the outdoor unit.

Is the fault remedied?

Replace the control boards of the indoor unit

Fig. 43: Transformer measurement

Check the transformer (must not be connected to a
condenser) with a multimeter. The normal value is
approx. 0 Ohm. If the value deviates, replace the
transformer.

40

Error code: E3 / F5

NO

YES

NO

YES

NO

YES

NO

YES

NO

Reason: If the fan speed of the indoor unit/outdoor unit falls below 300 rpm, the unit switches off

and the display shows error code E3 or E5

Cause:

Switch off voltage, switch on again 2

minutes later. Is the error still

De-energise the unit and attempt to

turn the fan wheel by hand. Does it

Check the electrical connections.

Are these correctly implemented?

Measure the voltage at the corre-

sponding connector plug on the con-

trol board (see section

dure’ on page 42). Does the

measured voltage lie within the toler-

n Electrical connection faulty
n Evaporator fan wheel defective
n Evaporator fan motor defective
n Control board faulty

present?

rotate freely?

Ä

‘Proce-

ance range?

The unit operates normally.

Check the motor and the fan

wheel bearing, and replace the

defective parts.

Correctly establish the electrical

connection

Replace the control board.

Replace the fan motor. Is the fault

remedied?

41

1 3 4 5 6

REMKO BL...DC

Procedure

DC fan motor of the indoor unit (control chip is installed in the motor):

Switch on the voltage to the unit. In standby mode, measure the unit between terminals 1-3 and 4-3 of the
connector plug. Check the measured values against those listed in the table below. If these differ, there is a
problem with the control board and it must be replaced.

Fig. 44: Motor measurements

Terminal Colour Voltage

1 Red 280V~380V

2 --- ---

3 Black 0V

4 White 14-17.5V

5 Yellow 0~5.6V

6 Blue 14-17.5V

DC fan motor of the outdoor unit (control chip is installed in the motor):

Measure the resistance between terminals 1-3 and 4-3. This should be roughly identical. If the resistance
deviates significantly, assume that the motor is defective and must be replaced.

42

Error code: EC

YES

YES

NO YES

YES

NO

Reason: The evaporator probe T2 measures the actual value with the compressor start and takes

this as the reference value T
has not dropped by 2 °C for at least 4 seconds then the system assumes that the refrig-

erant is low. The measurement is performed a total of 3 times before the display shows the
error code "EC".

. If, 5 minutes after the compressor start, the value T

Start

Start

Cause:

Switch off voltage, switch on again 2 minutes

later. Is the error still present?

Check whether the indoor unit blows out cold

Check the cooling circuit for leaks. Leaks

Check the cooling circuit for any blockages. Are

the shut-off valves on the outdoor unit open?

n Refrigerant low or cooling circuit blocked
n Evaporator probe T2 defective
n Indoor unit control board defective

air.

found?

Check the position and function of the evapo-

rator probe T2. Is it correctly seated and with

the correct resistance?

Exchange the control boards of the indoor unit.

Remedy leaks and put the unit back into opera-

tion.

43

NO

YES

NO

YES

REMKO BL...DC

Error code: E4 / E5 / F1 / F2 / F3

Reason: If the test voltage of the probes is lower than 0.06 V or higher than 4.94 V then the display

shows the error code of the corresponding probe.

Cause:

Check the connecting cable between the con­trol board and the temperature probe. Is it OK

Check the probe for correct resistance,

depending on the temperature (see resistance

Replace the corresponding control board.

n Electrical connection faulty
n Temperature probe defective
n Control board defective

and correctly connected?

table)

Establish a proper connection.

Replace the probe.

Fig. 45: Check the probes

44

Error code: F0

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

Reason: Safety shutdown due to overly high current consumption of individual unit components

Cause:

Check the supply voltage. Is this correct?

Check the cooling circuit for any blockages. Is

Check the winding resistances of the com-

Check the electrical connections. Are these cor-

n Faulty power supply
n Cooling circuit blocked
n Faulty control board
n Electrical connections faulty
n Compressor defective

the cooling circuit OK?

pressor. Are they OK?

rectly implemented?

Switch the unit off and ensure correct supply

voltage.

Remove the blockage (shut-off valve open?)

Replace the compressor.

Replace or correct the electrical connections.

Does the transformer operate fault-free? (See

Ä

on page 40)

Replace the outdoor unit.

Replace the transformer or control boards of

the outdoor unit.

45

YES

NO

NO

YES

NO

YES

NO

YES

REMKO BL...DC

Error code: P0

Reason: If the power supply to the compressor controller is faulty, the display shows the error code

“P0” and the unit switches off

Cause:

Check the connecting cables between the con-

trol board and compressor? Are they faulty?

Check the inverter controller (see section

Ä

‘Check the inverter controller’ on page 46).

Check the condenser fan motor. Is it working

Check the winding resistances of the com-

n Electrical connection faulty
n Faulty control board
n Condenser fan motor defective or blocked
n Compressor defective

Fault eliminated?

correctly?

pressor. Are they OK?

Establish a correct connection between the

control board and compressor.

Replace the control board.

See troubleshooting fault F5

Replace the compressor.

Exchange the control boards of the outdoor

unit.

Check the inverter controller

Switch off the power supply to the unit. Wait until the capacitors are fully discharged and disconnect the com­pressor from the control board.

Check the resistances at the outputs of the control board with the aid of a digital voltmeter as follows:

Voltmeter Normal resistance

(+) Red (-) Black

U

V

N

W

(+) Red

¥

(multiple MW)

46

Error code: P1

NO

YES

NO

YES

NO

YES

NO

YES

Reason: Overvoltage or undervoltage protection has tripped

Cause:

Check the power supply. Is the supply voltage

Check the electrical connections. Are they OK?

Switch the power on and put the unit into

standby mode. Measure the voltage on the

board, at contacts "P" and "N". This should be

approx. 310V, 340V or 380V DC. Now start the

unit. The voltage between "P" and "N" should

now be between 220-400V. Is the correct

n Faulty supply voltage
n Refrigerant low or cooling circuit blocked
n Faulty control board

correct?

voltage applied?

Switch the unit off and have the power supply

checked/corrected.

Replace the electrical connections.

Replace the control board.

Check the transformer. Is a defect present?

Replace the transformer.

Replace the control board.

47

YES

NO

YES

NO

YES

NO

YES

YES

NO

YES

REMKO BL...DC

Error code: P2 (with units with a thermal contact)

Reason: If the test voltage of the thermal contact does not lie at 5V then the display shows the error

message “P2”

Cause:

Check the air flow

volumes of the

indoor unit and out-

door unit. Are they

blocked or dirty?

Switch off the power

supply to the unit

and switch it on

again after 10 mins.

Does the unit start

up?

Check the tempera-

ture of the com-

pressor. Has it

heated up?

n Faulty supply voltage
n Refrigerant low or cooling circuit blocked
n Faulty control board

Clean the filter or heat exchanger and ensure a sufficient air flow volume.

Check the thermal contact. Is it correctly connected?

Measure the resistance of the thermal contact.

Is it 0?

Connect it correctly.

Check the cooling

circuit. Is it OK?

Replace the thermal

contact.

Replace the control board of the outdoor unit.

48

Error code: P4

YES

NO

NO

YES

NO

YES

NO

YES

1

Reason: Safety shutdown of inverter controller. Internal system monitoring triggered (e.g. communi-

cation problem between board and compressor, the compressor speed is not OK)

Cause:

Check the electrical connection between the

control board and compressor. Are these cor-

Check the inverter controller. Is this functional?

Check the condenser fan motor. Is it OK?

Check the winding resistances of the com-

n Faulty electrical connections
n Inverter regulation on board defective
n Condenser fan motor defective
n Compressor defective
n Control board defective

rectly implemented?

pressor. Are they OK?

Establish a proper connection.

Replace the control board.

Follow the instructions for troubleshooting fault

F5

Replace the compressor

Replace the control boards of the outdoor unit.

Check individual components

Check the temperature probes

Disconnect the temperature probe from the control
board and measure the resistance on the plug's
contacts.

Fig. 46: Check temperature probes

1: Multimeter

49

K Ohm K Ohm K Ohm K Ohm

REMKO BL...DC

Resistance values for probes T1, T2, T3 and T4

50

Resistance values for probe T5

K Ohm K Ohm K Ohm K Ohm

51

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

52

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. 47).

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

4. Clean the filter with a commercially available
vacuum cleaner (
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. 47).

Fig. 48). To do so, turn the

Fig. 49). The dirty side

Fig. 47: Folding the grill upwards

Fig. 48: 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. 49: Cleaning with lukewarm water

53

REMKO BL...DC

13 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.

54

14 Exploded view and spare parts lists

1

2

4

5

6

7

8

9

10

12

13

14

15

17

18

25

26

11

16

19

20

21

22

23

24

3

14.1 Exploded view - Indoor unit

Fig. 50: Exploded view of the unit BL 263-353 DC IT

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

55

REMKO BL...DC

14.2 Spare parts list - Indoor unit

IMPORTANT!

To ensure the correct delivery of spare parts, please always the device type with the corresponding serial
number (see type plate)

No. Designation

1 Unit trim

2 Air filter, set

3 Display board

4 Housing front

5 Evaporator

6 Fan wheel mounting

7 Fan wheel bearing

8 Fan wheel

9 Air deflection blade, horizontal

10 Condensate hose

11 Air deflection blade, vertical

12 Swing motor

13 Fan motor

14 Fan motor cover

15 Quick-release coupling

16 Probe, ambient air T1

17 Probe, evaporator T2

18 Transformer (optional)

19 Control board

20 Terminal block

21 Electronics module, complete

22 Ion generator

23 Housing incl. condensate tray

24 Wall bracket

25 Holder, infrared remote control

26 Infrared remote control

56

14.3 Exploded view, outdoor unit

1

2

3

4

5

6

7

8

10

12

13

14

15

16

17

18

19

20
21

22

23

24
25

26

27

28

28

29

30

31

32

33
34

35
36

37

38

11

9

Fig. 51: Exploded view of the unit BL 263-353 DC AT

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

57

REMKO BL...DC

14.4 Spare parts list - Outdoor unit

IMPORTANT!

To ensure the correct delivery of spare parts, please always the device type with the corresponding serial
number (see type plate)

No. Designation

1 Temperature probe, air inlet T4

2 Condenser

3 Temperature probe, condenser outlet T3

4 Side section, right

5 Recessed grip

6 Refrigerant connections cover

7 Floor panel

8 Unit front

9 Condenser protection grille

10 Fan blade

11 Fan motor

12 Fan motor mounting plate

13 Side section, left

14 Cover panel

15 Housing partition plate

16 Pipe assembly, 4-way valve

17 Shut-off valve, suction pipe

18 4-way valve

19 Installation plate, shut-off valve

20 Capillary tube injection

21 Shut-off valve, injection pipe

22 Compressor

23 Electronics module, complete

24 Electronics module cover

25 Control board

26 Control board mounting plate

27 Electronics module mounting plate

28 Injection pipe quick-release coupling

58

No. Designation

Refrigerant piping, 3 metres

29

Refrigerant piping, 5 metres

Refrigerant piping, 8 metres

30 Terminal block mounting plate

31 Terminal block

32 Temperature probe, heat gas line T5

33 Condenser

34 Condenser mounting

35 Control board, winter fan speed control

36 Crank case heating, compressor

37 Heating element base plate

38 Winter fan speed control WRH-1

39 Suction pipe quick-release coupling

59

Notes

REMKO BL...DC

60

Notes

61

REMKO BL...DC

15 Index

A

Alarms

Checks .............................37

Possible causes ......................37

Remedial measures ...................37

Assembly

Strip foundation ......................28

C

Care and maintenance ...................52

Cleaning

Air filter for indoor unit .................53

Condensate pump ....................53

Housing ............................53

Condensate drainage connection and safe

drainage ..............................28

Condensate pump, electrical wiring diagram ..32

Customer service .......................37

D

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

E

Electrical drawings ...................33, 34

Electrical wiring .........................30

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

Electrical wiring diagram, condensate pump ..32

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

Exploded view of the unit ..............55, 57

F

Fault display on the indoor unit .............39

Function test of the cooling and heating modes

Functional checks .......................35

36

I

Infrared remote control ...................12

Installation location, selection ..............21

Installation materials .....................20

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

K

Keys on the remote control ................13

M

Maintenance ...........................52

Manual mode ..........................12

Minimum clearances .....................23

O

Ordering spare parts ..................56, 58

P

Propellant in accordance with Kyoto Protocol ...9

Q

Quick-release couplings ..................26

R

Remote control

Keys ...............................13

S

Safe drainage in the event of leakages .......29

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 ............21

Shutdown

Permanent ..........................54

Temporary ..........................54

Spare parts list ......................56, 58

. 6

T

Test run ...............................35

Troubleshooting and customer service .......37

U

Unit installation .........................25

W

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

Wall opening ...........................20

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

62

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