REMKO MD 261 User Manual

REMKO MD

MD 261, MD 351

Inverter wall - room air conditioner in split design

Operation · Technology · Spare parts

Issue GB – T11

Contents

Safety notes

Environmental protection and recycling

Warranty

Transport and packaging

Description of the equipment

Operation

Shutdown

Care and maintenance

Troubleshooting and customer service

Installation instructions for qualified personnel

Installation

Tightness check

Condensation connection

4

4

4

5

5

6-12

13

13-14

15-16

16-19

19-21

21

22

Electrical connection

Electrical connection diagram

Electrical circuit diagram

Before start up

Add refrigerant

Commissioning

Unit dimensions

Product illustration

Spare parts list

Technical data

22-23

23

24

25

25

25-26

27

28-29

28-29

30

Made by REMKO

These operating instructions are to be read carefully
prior to commissioning / operation of the device!

These instructions are part of the unit and must always
be kept in the vicinity of the installation site or on the device.

Subject to modifications; No liability accepted for errors or misprints!

3

REMKO MD

4

Safety notes

Carefully read this manual before
starting the unit for the first
time. They contain useful tips,
information as well as hazard
warnings to prevent injury or
material damage. Non-observance
of this manual may endanger
persons, the environment as well as
the equipment itself and will void
any claims for liability.

■ Store this manual as well as

the refrigerant datasheet in the
vicinity of the unit.

■ The unit should only be set

up and installed by qualified
personnel.

■ The setup, connection and

operation of the unit and
its components must be in
accordance with the operating
conditions stipulated in this
manual and comply with all
applicable local regulations.

■ Units designed for mobile use

should be safely set up on a
suitable floor and in a vertical
position. Units designed for
stationary use should only be
operated in their permanently
installed state.

■ It is prohibited to make

modifications or changes to
equipment or components
supplied by REMKO as this may
cause malfunctions.

■ Equipment and components

should not be operated in areas
where there is a heightened
damage risk. Observe the
minimum clearances.

■ The electrical supply should

be adapted to fulfil the
requirements of the unit.

■ The operational safety of

equipment and components is
only assured providing they are
used as intended and in a fully
assembled state. Safety devices
should not be modified or
bypassed.

■ Do not operate equipment

or components with obvious
defects or signs of damage.

■ All housing parts and openings,

e.g. air inlets and outlets, must
not be blocked by foreign items,
fluids or gases.

■ The equipment and components

must be kept a safe distance
from inflammable, explosive,
combustible, aggressive and
dirty areas or atmospheres.

■ Persons coming into contact

with equipment parts may suffer
burns or injury.

■ Installation, repair and

maintenance work should only
be carried out by authorised
specialists. Inspection and
cleaning can be performed
by the operator providing the
equipment is not under voltage.

■ Take appropriate hazard

prevention measures when
performing installation, repair or
maintenance work or cleaning
the equipment.

■ The equipment or components

should not be exposed to any
mechanical stresses, extreme
levels of humidity or direct
exposure to sunlight.

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 old
equipment

Our Production department is
under constant quality control.
Only top quality materials are
processed, the majority of which
are recyclable. Do your part
to protect the environment by
ensuring that your old unit is
disposed of according to regionally
valid regulations, for example in
authorised disposal and recycling
centres or collection points.

Warranty

Prerequisite for any warranty claims
is that the purchaser or his client
has completely filled out the
"warranty registration card"
included with any unit within the
relevant time period of sale and
initial operation and returned the
completed card to REMKO GmbH
& Co. KG.
The warranty conditions are
listed in the „General business
and delivery conditions“. The
contractual parties can also agree
additional terms beyond the scope
of the above. For this reason please
contact your direct contracting
partner first.

Transport and

M

M

5

packaging

The equipment is shipped in sturdy
transport packaging. Immediately
check the equipment on delivery
and make a note of any damage
or missing parts on the delivery
note. Inform the forwarding agent
and contractual partner. Warranty
claims at a later date will not be
accepted.

Unit description

The MD 261-351 room air
conditioning units have a REMKO
MD...AT outdoor component as
well as an indoor unit MD...IT.

The outdoor component serves
to output the heat extracted by
the indoor unit from the room
being cooled. In heater operation,
the heat taken up by the outdoor
component can be discharged
by the indoor unit into the room
to be heated. In both operating
modes, the performance of the
compressor is adjusted precisely
to the requirement which thereby
regulates the set temperature with
minimal temperature variation.
This "inverter-technology" enables
power saving over a conventional
split-system and also reduces noise
emissions to a particularly low
level.
The outdoor component can be
installed outside or in indoor areas,
if certain requirements are met.
The indoor unit is designed for the
upper wall area in the interior. It
is operated via an infrared remote
control.

The outdoor component consists
of a refrigerant circuit with
compressor, fin liquefier, liquefier
fan, reverse flow valve and flow
regulator. The outdoor component
is controlled via the regulation of
the indoor unit.

The indoor unit consists of
a fin evaporator, evaporator
fan, regulation system and
condensation pan.

Floor consoles, wall consoles,
refrigerant pipes and condensation
pumps are available as accessories.

Schematic of exterior refrigerant circuit

Liquefier fan

Liquefier

Schematic of refrigerant circuit in indoor unit - cooling

Vaporiser

System layout

Indoor area

Indoor unit

Mains cable

Condensation pipe

Outdoor area

Outdoor
component

Condensation pipe

Reverse flow valve

Filter dryer Capillary tube flow regulator

Vaporiser fan

Control cable

Injection pipe

Stop valve

Liquefier fan

Compressor

Connection
Manometer

Connection
valve
Suction pipe

Connection
valve
Injection pipe

Connection to suction pipe

Connection to injection pipe

Suction pipe

The connection between the indoor unit and the outdoor component
made with refrigerant pipes.

REMKO MD

6

Operation

The indoor unit is easy to operate using an infrared remote control. This is supplied as standard. The indoor unit
beeps to acknowledge the correct transmission of data. If it is not possible to program
the indoor unit using the remote control, it can also be manually operated.

Manual operation

The indoor unit can also be started
manually. After the air inlet screen
has been opened, the inner
recessed button can be pressed and
automatic mode can be activated.

In manual operation, the following
settings apply:

Cooling mode: 24°C,
Fan speed AUTO
Heating mode: 26°C,
Fan speed AUTO

By pressing the button of the infra­red remote control, the manual
operation is interrupted.

Display on indoor unit

The display lights up according to the settings.

Display on indoor unit

Display

Automatic mode

Timer

activated/deactivated

Defrosting / heating

Display for setpoint

and gauge

Compressor speed

Infrared remote control

The infrared remote control sends
the programmed settings over
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.

First insert the supplied batteries
(2 x type AAA) into the remote
control. To do so, pull off the flap
of the battery compartment and
insert the batteries according to
their polarization (see marks).

Maximum distance

max. 6 m

CAUTION

Problems are shown in code
(see chapter Troubleshooting
and Customer service).

NOTE

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 long periods.

Buttons on the remote control

7

Buttons on the remote control

"ON/OFF" Button

Press this button to start the
unit.

"MODE" button

Press this button 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 room
air is cooled to the desired
temperature.

3. Dehumidifying mode
In this mode the room is mainly
dehumidified, the adjusted
temperature is retained.

4. Heating mode
In this mode, the warm air in
the room is warmed up to the
desired temperature.

"FAN" button

Press this button to set the

required fan speed.
4 settings are available:
automatic, high, medium and
low fan speed.

"SLEEP/TURBO" Button

Pressing this button will

automatically increase or
decrease the target temperature
by 1 °C within an hour in
cooling and heating mode
respectively.

With the TURBO function, the

the maximum fan speed can be
activated.

"SWING" Button

This button directly activates

the oscillating function of the
fins for better air distribution in
the room.

"AIR DIRECTION" Button

With this button, the desired fin

position can be set. There are
5 positions and an oscillating
function available.

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

Button "▲"

With this button, the desired

temperature can be increased
up to 30 °C.

Button "▼"

With this button, the desired

temperature can be reduced
down to 17 °C.

"TIMER-ON" Button

This button serves to program

the automatic activation time
for the device within the next
24 hours.

"TIMER-OFF" Button

This button serves to program

the automatic switch-off time
for the device within the next
24 hours.

Auto

Aut o

SET TEMP

Auto

SET TEMP

SET TEMP

SET TEMP

SET TEMP

SET TEMP

Aut o

SET TEMP

Auto

SET TEMP

SET TEMP

SET TEMP

SET TEMP

SET TEMP

Auto

Auto

REMKO MD

8

Button functions

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

ON/OFF Button

pq

Buttons

By pressing the ON / OFF button, you can activate or deactivate your
unit. The programmed settings and adjustment values before the unit
was turned off will appear on the display.

ON/OFF ON/OFF

The

p/q

buttons can be used to reduce and increase the desired nominal

temperature.

p

q

MODE Button

AUTOMATIC Mode

Use the MODE button to select between the individual operating modes.
A total of 5 modes are available:

1. Automatic automatic selection of cooling or heating operation

2. Cooling predominantly summer operating mode

3. Dehumidification summer or winter operating mode

4. Heating predominantly winter operating mode

5. Air circulation only for circulation of air

Automatic Cooling Dehumidification Heating

MODE

MODE MODE MODE MODE

Air circulation

In automatic mode, the control system autonomously selects between
heating, cooling and circulating modes. The nominal temperature
can only be preselected in a different mode and is then assumed by
automatic mode.

The nominal temperature is
under the room temperature

The nominal temperature is
above the room temperature

OR

▲

▼

ON/OFF

Cooling

or

Heating

or

AIR

CIRCULATION

COOLING Mode

SET TEMP

SET TEMP

SET TEMP

SET TEMP

SET TEMP

SET TEMP

Auto

Auto

SET TEMP

Auto

Turbo

9

In cooling mode, the air in the room is cooled down to the adjusted
nominal temperature. The desired room temperature is set with the
▲/▼buttons in 1 °C increments. If the room temperature is 1 °C
above the selected nominal temperature, then the indoor unit starts
to cool down the air in the room. The inverter controller checks the
difference between the adjusted nominal temperature and the actual
room temperature. In the event of a greater difference, a higher cooling
performance is created. In the event of a smaller difference, a lower
cooling performance is created. This serves to maintain the air discharge
temperature and the room temperature.
If the adjusted room temperature is lower than approx. 2 °C, then the
control system turns the cooling function off. To protect the compressor,
the regulation only turns the cooling on again after a waiting period of 3
minutes.

DEHUMIDIFICATION MODE

MODE

▲

OR

▼

COOLING
OPERATION

Functional diagram

Actual

Nominal temperature

Nominal temperature

-2°C

Compressor operation AT

Fan operation AT

Fan operation IT

temperature

> 6 Min.

> 6 Min.> 3 Min.

30 sec. 30 sec.

Start cooling mode

Cooling mode

Stop cooling mode

Operation

Stop

In dehumidification mode, the room temperature is set to 24 °C. Due to
the low temperature of the refrigerant, the dew point of the air on the
evaporator is lower. The excess moisture in the air is condensed by the
evaporator, the room is dehumidified. The fan speed should be set to
automatic in order to achieve a maximum level of dehumidification. In
automatic mode, the fan is switched on and off in intervals.

MODE

Functional diagram

Nominal temperature

Nominal temperature

-2°C

Compressor operation AT

Fan operation AT

Fan operation IT

▲

OR

▼

Actual
temperature

ON/OFF

Low fan speed

DE­HUMIDIFICATION
MODE

Start
Dehumidifying mode

Dehumidifying mode

Stop
Dehumidifying mode

30 sec.

Operation

Stop

SET TEMP

SET TEMP

SET TEMP

Auto

Turbo

SET TEMP

REMKO MD

10

HEATING Mode

In the heating mode, you can heat the room in spring or fall. The desired
room temperature is set with the ▲/▼buttons in 1 °C increments. If
the room temperature is 1 °C below the selected nominal temperature,
then the indoor unit starts to warm up the air in the room. The
inverter controller checks the difference between the adjusted nominal
temperature and the actual room temperature.
In the event of a greater difference, a higher cooling performance is
created.
In the event of a smaller difference, a lower cooling performance is
created.
This serves to maintain the air discharge temperature and the room
temperature.
If the adjusted room temperature is still exceeded by approx. 2 °C,
then the control system turns the heating function off. To protect the
compressor, the regulation only turns the heater on again after a waiting
period of 3 minutes.
In heating mode, the indoor unit fan motor is switched on after a delay,
in order to prevent the discharge of cold air.
The outdoor unit fins could crack at low external temperatures.
The reversal of the cooling circuit undertakes defrosting in intervals. The
display shows "H1" during the defrosting period.

Heating mode operational sequence

MODE

▲

OR

FAN

▼

Functional diagram

Nominal temperature

+5 °C

Nominal temperature

+2 °C

Compressor operation AT

Fan operation AT

Fan operation IT

Reverse flow valve

Actual
temperature

> 6 Min.

> 6 Min.> 3 Min.

30 sec. 30 sec.

30 sec. 30 sec.

Stop heating
operation

Heating mode

Start heating
mode

During the defrosting cycle, the indoor unit vaporiser fan and the
outdoor component liquefier fan are switched off.
After the cycle is concluded, the fans are switched to their previous
settings.

Reverse flow valve

Compressor operation AT

Fan operation AT

Fan operation IT

Defrost period

30 sec.

< 7 Min.

15 sec.

30 sec.

30 sec.

60 sec.

3 Min.

HEATING­MODE

Operation

Stop

Operation

Stop

AIR CIRCULATION Mode

SET TEMP

SET TEMP

SET TEMP

Auto

Turbo

SET TEMP

Aut o

Tur bo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

SET TEMP

Aut o

Tur bo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

ON TIM ER

SET TEMP

Aut o

Tur bo

ON T IMER

SET TEMP

Auto

Turbo

SET TEMP

Auto

Turbo

11

In ventilation mode, the air in the room is only circulated.
The room temperature cannot be changed in this mode.
The cooling or heating operation is not activated.

FAN Button

SLEEP/TURBO Button

MODE

FAN

AIR CIRCULATION

The fan speed can be adjusted with this button. A selection can be made
between low, medium, high and automatic fan speed.

FAN

FAN

FAN

FAN

With the button a programming function is activated, which causes the
nominal temperature in the cooling mode to increase after one hour
by 1°C and after two hours by 2 °C. In heating mode, the nominal
temperature is decreased after one hour by 1 °C and after 2 hours by 2 °C.
The display on the indoor unit goes out.
With the TURBO function, the maximum fan speed can be activated

SWING and AIR DIRECTION Buttons

SLEEP/

TURBO

SLEEP/

TURBO

SLEEP/

TURBO

The oscillating function of the air discharge fins can be adjusted with
this button. The air distribution in the room is improved with the swing
function. In order to adjust the aim the air discharge fins to a particular
direction, the AIR DIRECTION button must be pressed briefly. In order to
activate the automatic swing function, the AIR DIRECTION button must
be pressed for longer than 2 seconds.

deactivated

deactivated deactivated

SWING

SWING

Hr.

ON TIM ER

Hr.

Off TI MER

SET TEMP

Aut o

Tur bo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

Hr.

ON TIME R

Off TIM ER

SET TEMP

Auto

Turbo

REMKO MD

12

TIMER Button • TIMER-ON / OFF

The activation and switch-off time can be programmed with this button.
The timer is activated/deactivated by means of pressing the timer on
and the timer off button. The timer symbol ON TIMER or OFF TIMER
appears. The desired activation or switch-off time for the display up to

9.5 (hours) in 30 minute intervals and from displayed 10 in 60-minute
intervals can be adjusted by means of pressing the Timer on or the Timer
off buttons.

When the programmed time has been reached, the device is
automatically turned on or off. If the indoor unit is automatically
switched on, then the mode, the temperature and the fan speed of the
last settings is reactivated.

The prior deletion of the on and off time can be achieved by pressing
On/Off button. The timer display on the indoor unit goes out.

TIMER ON button - activation delay

TIMER ON

TIMER

ON

TIMER

ON

Activation­delay

TIMER OFF button - switch-off delay

TIMER OFF

TIMER

OFF

TIMER

OFF

Switch-off
delay

Manual air distribution

There are individually adjustable
fins for adjusting the horizontal air
distribution on the air discharge
side.

CAUTION

Moving indoor machinery,
e.g. fans, have the potential to
cause injury during operation!
Only make adjustments when
swing operation is switched
off.

Manual air distribution

Shift lever left

Shift lever right

Shutdown

13

Care and maintenance

Temporary shutdown

1. Allow the indoor unit to run for
2 to 3 hours in air circulation
mode or in cooling mode at the
maximum temperature setting
in order to remove any residual
moisture from the unit.

2. Shut down the unit using the
remote control.

3. Switch off the voltage 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 equipment and
components are disposed of in
accordance with local regulations,
e.g. through authorised disposal
and recycling specialists or at
collection points.

Regular care and maintenance
serves to ensure trouble-free
operation and long service life of
the unit.

CAUTION

Prior to performing any
work, ensure the equipment
is isolated from the voltage
supply and secured to prevent
accidental switch-on!

Care

■

Ensure the indoor unit and
outdoor component are
protected against dirt, mould
and other deposits.

■

Clean the equipment using a
damp cloth. Do not use any
caustic, abrasive or solvent­based cleaning products. Do
not use a jet of water.

■

Clean the fins on the indoor
unit and outdoor component
prior to long shutdown periods.

Maintenance

■

It is recommended that
you take out a maintenance
contract with an annual service
from an appropriate specialist
firm.

TIP

This ensures the operational
reliability of your equipment!

NOTE

The statutory regulations
require an annual sealing test
for the refrigerant circuit in
relation to the refrigerant
filling level. The inspection
and documentation is to be
carried out by corresponding
specialist engineers.

Contact REMKO GmbH & Co. KG
or your contract partner for a list
of specialist companies near you.

Type of task

Checks/Maintenance/Inspections

General

Measure voltage and current

Check compressor/fans are functioning
correctly

Check fan is functioning correctly

Dirt on liquefier/vaporiser

Check refrigerant fill quantity

Check condensation drain

Test insulation

Check moving parts

Sealing test for refrigerant circuit

Commissioning

Monthly

Six-monthly

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

Yearly

REMKO MD

14

Cleaning the housing
of the indoor unit

1. Disconnect the supply voltage
to the equipment.

2. Open the intake grille of the
cover and fold it upwards.

3. Clean the guard using a soft,
damp cloth.

4. Switch the supply voltage back
on.

Air filter for indoor unit

Clean the air filter at intervals of
no more than 2 weeks. Reduce this
interval in case of heavily soiled air.

5. Any dirt can be cleaned off
using lukewarm water and mild
cleaning agents. In order to do
so, turn the dirty side upward
(Fig. 3).

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

7. Carefully insert the filter. Make
sure it is seated correctly.

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

9. Switch the supply voltage back
on.

10.

Switch the unit back on.

Cleaning the condensation
pump (optional equipment)

An optional integrated or separate
condensation pump may included
on the indoor unit, which pumps
out any accumulated condensation
into higher positioned drains.

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

Cleaning the filter
of the indoor unit

1. Disconnect the supply voltage
to the equipment.

2. Open the front side of the
device by means of folding
up the grille and allowing it to
engage (figure 1).

3. Lift the filter up slightly and pull
it out from underneath.

4. Clean the filter with a
commercially available vacuum
cleaner. In order to do so, turn
the dirty side upward (Fig. 2).

1 Fold grille upwards

2 Clean with a vacuum cleaner

3

Cleaning with lukewarm water

Troubleshooting and customer service

15

The equipment and components are manufactured using state-of-the-art production methods and tested several
times to verify their correct function. If malfunctions should occur, please check the functions as detailed in the
list below. Please inform your dealer if the unit is still not working correctly after all the functional checks have
been performed!

Malfunction

Fault Possible cause Checks Remedial measures

Check voltage,
possible wait until turned on
again.

Repair by a certified service centre

Plan for longer waiting period

Take into account the temperature
range for the indoor unit and
outside component

Switch off the mains protection
and switch it back on / have it
checked by a specialist

Check and if necessary clean the
pump

Reduce the distance to less than 6
m or change position

Replace the remote control

Place the receiver & transmitter
unit in the shade

Signal is not transmitted
when interference sources are
operational

Release the button / only press
one button

Insert new batteries

The unit does not start
or switches itself off

The unit does not respond
to the remote control

Power outage, undervoltage,
defective mains fuse / main circuit
breaker switched off

Damaged mains cable

Waiting time after switch-on too
short

Temperate outside operating
temperature range

Overvoltages caused by thunder
storms

Fault in external condensation
pump

Transmission distance too far /
receiver affected by interference

Defective remote control

Receiver or transmitter unit
exposed to excessive solar
radiation

Electromagnetic fields are
interfering with transmission

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

Batteries in remote control are flat

Are all other electrical installations
functioning correctly?

Are all other electrical installations
functioning correctly?

Have approx. 5 minutes elapsed
since the restart?

Are the fans in the indoor unit
and outside component working
correctly?

Has there recently been lightning?

Did the pump shut down due to
a fault?

Does the indoor unit beep when
pressing a button?

Is the unit running in manual
mode?

Does it function correctly in the
shade?

Does it function when
switching off possible sources of
interference?

Does the “Send” symbol appear
on the display?

Have new batteries been inserted?
Is the display incomplete?

The unit is running
but only provides
reduced cooling or heating
performance

Condensation is leaking out

Filter is unclean / air inlet / outlet
blocked by foreign items

Windows and doors open.
Heating/cooling output increases

Neither cooling nor heating mode
has been set

Fins on outdoor component
blocked by foreign items

Leaking refrigerant circuit

of the collection container
drainage pipe Blocked / damaged

Faulty external condensation
pump or float

Condensation has not drained
away and has collected in the
condensation pipe

Condensation does not drain off

Have the filters been cleaned? Clean the filters

Have there been any
constructional /
application-related changes?

Is the cooling/heating symbol
shown on the display?

Is the fan on the outdoor
component running
and are the fins unobstructed?

Are there signs of frost on the fins
of the indoor unit?

Is unrestricted condensation
discharge ensured?

Is the condensation tray full and
the pump running?

Is there a steady fall on the
condensation pipe? Check there is
no blockage in the pipe.

Are the condensation pipes
unblocked and is there a steady
fall? Are the condensation pump
and float switch functioning
correctly?

Close windows and doors / install
additional units

Correct the settings for the unit

Check the fan or winter controller,
reduce the air resistance

Repair by specialist

Cleaning of drain pipe and
collector reservoir.

Call out a specialist to replace the
pump

The condensation pipe must have a
fall. If necessary, clean the pipe

The condensation pipe must have
a fall. If necessary, clean the pipe.
A faulty condensation pump and
float switch should be replaced.

REMKO MD

16

Problem display by blinker code

Display Cause Required action

E1

E3 Liquefier fan controller faulty Contact specialist firm

E5 Sensor evaporator temperature faulty / short-circuited Contact specialist firm

E6

H4

P0 IGBT overvoltage protection Contact specialist firm

P1 Undervoltage protection Switch system voltage-free and switch on again

P2 Compressor overload protection Contact specialist firm

P4 Power board IPM shutdown system Contact specialist firm

Communication error between outdoor component and indoor unit

Sensor air circulation faulty / short-circuited or
sensor evaporator faulty / short-circuited

Operating limits of outdoor component or indoor unit
exceeded

Contact specialist firm

Contact specialist firm

Switch system off

Installation instructions for qualified personnel

Important points prior to
installation

■

Locate the unit in original
packaging as close as possible
to the installation point to avoid
transport damage.

■

Check the contents of the
packaging for completeness
and check the unit for visible
transport damage. Report
any damage immediately to
your contracting party and the
shipping company.

■

Lift the unit at the corners
and not on the refrigerant or
condensation connections

■

The refrigerant pipes
(injection and suction pipe),
valves and connections must be
insulated impervious to vapour
diffusion. If necessary, insulate
the condensation pipe also

■

Select an installation location
which allows air to freely
flow through the inlet and
outlet. (See section "Minimum
clearances").

■

Do not install the unit in
the immediate vicinity of
devices with intensive thermal
radiation. Installation near
sources of thermal radiation
reduces the unit output.

■

Open the blocking valves of the
refrigerant pipes only after the
installation is complete.

■

Seal off open refrigerant pipes
with suitable caps or adhesive
strips to avoid infiltration of
moisture and never kink or
compress the refrigerant pipes.

■

Avoid unnecessary bends
. This minimises the pressure
loss in the refrigerant pipes and
ensures that the compressor
oil can flow back without
obstruction.

■

Make special preparations
regarding the oil return if the
outdoor unit is located above
the indoor unit. (See section
"Oil return flow measures").

■

Add refrigerant if the basic
length of the refrigerant pipe
exceeds 5 metres.

For the quantity of additional
refrigerant, refer to chapter
"Add refrigerant".

■

Only use the union nuts for
the refrigerant pipes provided
in the delivery scope, and
remove them just shortly before
connecting them with the
refrigerant pipes.

■

Make all electrical connections
according to valid DIN and DE
regulations.

■

See electrical connection
diagram. Always attach
electrical cables properly in
electrical clamps. Otherwise a
fire could result.

Wall openings

17

■

A wall opening of at least 70
mm diameter and 10 mm slope
from the inside to the outside
must be made for each indoor
unit

■

We recommend that the
inside of the hole is padded or
lined, e.g. using a PVC tube,
to prevent the pipes being
damaged.

■

After installation, the wall
opening should be closed off on
the building side with a suitable
sealant. Do not use substances
containing cement or lime!

Pipes and cables in wall breakthrough

Control cable

Selection of the installation
location

Indoor unit

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

Outdoor component

The outdoor component is
designed for horizontal base
installation outdoors. It should
be placed on level, flat and firm
ground. The unit should also
be secured to prevent toppling.
The outdoor component can be
set up outside as well as inside a
building. For external installation,
please observe the following notes
to protect the unit from weather
conditions.

Wind

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

Windbreak

Wind

PVC tube

Suction pipe

Condensation pipe

Injection pipe

Installation material

The indoor unit is fastened using a
wall bracket and 4 threaded screws
(provided by the customer).

The outdoor component is
attached with 4 screws via a wall
bracket on the wall or a floor
bracket on the ground.

Rain

The unit should be at least 10 cm
off the ground when mounted on
the roof or ground. A floor bracket
is optionally available.

Sun

The liquefier on the outdoor
component radiates heat.
Exposure to direct sunlight will
further increase the temperature
of the fins and reduce the
heat output of the finned
heat exchanger. The outdoor
component should therefore be
installed as near as possible to
the north side of the building.
If necessary, take measures
to provide sufficient shade
(responsibility of customer). One
possible solution is to build a small
roof. 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
20 cm above the expected level
of snow to prevent snow from
entering the outdoor component.
An optional wall bracket is
available as an accessory.

Minimum clearance to snow

Snow

20 cm

REMKO MD

18

Installation inside buildings

■

Ensure there is adequate heat
dissipation when placing the
outdoor component in cellars,
attics, adjoining rooms or halls
(Fig 4).

■

Install an additional fan with
a rated flow comparative to
that of the outdoor component
being installed in the room.
This is used in conjunction with
ventilation ducts to compensate
any pressure losses

(Figure 4)

■

Ensure a continuous and
unobstructed air flow from
outside, preferably using
sufficiently large air intakes
placed opposite each other
(Figure 4).

4 Installation inside buildings

Warm air

Additional
fan

Light
well

Warm air

■

Comply with any regulations
and conditions affecting
the statics of the building.
If necessary, fit acoustic
installation.

Outdoor component

Cold
Fresh air

Light

well

Minimum clearances

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

Minimum clearances

120

Air intake

120

200

A 150 mm

B 700 mm

C 400 mm

D 150 mm

E 200 mm

Air outlet

120

1500

MD 261 / 351 AT

Air intake

D

A

E

B

Air outlet

C

All values in mm

Installation

19

Oil return measures

If the outdoor component 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.

Oil return measures

Outdoor
component

Oil pump bend

in suction pipe to

outdoor component

1 x every 2.5

metres of rising

pipe

Radius:
min. 50 mm

max. 15 m

Indoor unit

Connection variations of
inner unit

Connection variations

1

2

3

1 Outlet on the wall, right
2 Outlet through the wall, right
3 Outlet through the wall, left
4 Outlet on the wall, left

Wall bracket for indoor unit

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

NOTE

Installation should only be
performed by authorised
specialists.

Unit installation

The indoor unit is attached by
means of a wall bracket, under
consideration of air discharge side

4

located in the lower part.

1. Mark the mounting points
on the statically permissible
building sections according to
the dimensions of the unit.

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

3. Connect the refrigerant
pipes, electrical cables and
condensation pipe to the indoor
unit as described below.

Mounting points for wall bracket

MD 261 IT

250

65

45

MD 351 IT

270

65

45

750

815

65

65

All dimensions in mm

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 (Figure 5).

5. Check that the unit is level.

5

Hooking in

REMKO MD

20

Connection of refrigerant
pipes

The on site connection of the
refrigerant pipes is made inside the
unit.

It may be necessary to fit a reducer
or flared adapter to the indoor
unit. These fittings are included
as standard. Once installed, the
connections should be made tight
against vapour diffusion.

CAUTION

The units are factory filled with
dry nitrogen to check for leaks.
The pressurised nitrogen is
released when loosening the
union nuts.

The following instructions describe
the installation of the refrigerant
circuit and the assembly of the
indoor unit and the outdoor
component.

1.

The required pipe diameters are

given in the table "Technical
data".

5. Verify that the shape of the
flange is correct(Figure 8).

6. First connect and hand-tighten
the refrigerant connections
to ensure they are correctly
seated.

7. Now fully tighten the fittings
using 2 suitably sized open­ended spanners. Use one
spanner to counter the force
when tightening the fitting
(Figure 9).

8. Use insulation hoses which are
designed for this temperature
range and diffusion tight.

9. Lay the refrigerant pipes from
the indoor unit to the outdoor
component. In doing so, ensure

6 Deburring the refrigerant pipe

Refrigerant pipe

that they are sufficiently

attached and take measures for
the oil return, if necessary!

10.

Observe the permitted bending
radius for the refrigerant pipes
during installation. Never bend
a pipe twice in the same place.
Brittle pipes and potential
cracking are the consequences.

NOTE

Only employ tools and
components suitable for
refrigeration applications.

11.

Use the wall or floor brackets
to fit the outdoor component
against structural parts
approved to support the static
load (refer to the installation
instructions for the brackets).

7 Flanging the refrigerant pipe

Flanging tool

2. Remove the factory-fitted
protective caps and union
nuts on the connections.
These should be used during
installation.

3. Before flanging the refrigerant
pipes, ensure that the union nut
is fitted on the pipe.

4. Prepare the laid refrigerant
pipes as shown below
(Figure 6+7).

Deburrer

8 Correct flange shape

9 Tighten the fitting

Tighten 1. spanner

Counter

2. spanner

Tightening
torque:

1

4

15-20 Nm

“

3

8

33-40 Nm

“

1

2

50-60 Nm

“

5

8

65-75 Nm

“

3

4

95-105 Nm

“

12.

21

Ensure that structure-borne
sound is not transferred to parts
of the building. Use vibration
dampers to reduce the effects
of structure-borne sound!

13.

Prepare the refrigerant pipe
for the outdoor component as
described above.

Supplementary information
for Installation

■

For the combination of the
outdoor component with some
indoor units, the connection of
the refrigerant pipes may differ.
In that case, install the provided
reducer or expansion fittings to
the indoor unit.

■

If the basic length of the
refrigerant pipe exceeds
5 m, add refrigerant when
commissioning the system for
the first time. (See chapter
"Add refrigerant").

Tightness check

Once all the connections have
been established, the pressure
gauge station is attached as
follows to the Schrader valve (if
fitted):
red = small valve
= injection pressure
blue = large valve
= suction pressure

Once connected, perform a
tightness test using dried nitrogen.
The tightness test involves
spraying a leak detection spray
onto the connections. If bubbles
are visible, the connections have
not been properly made. Re­tighten the connection or prepare
a new flange.

If the tightness test is successfully
completed, depressurise the
refrigerant pipes and start a
vacuum pump with an absolute
final partial pressure of min. 10
mbar to remove the air in the pipe.
Any humidity present in the pipes
is also removed.

CAUTION

A vacuum of min. 20 mbar
must be created!

The time required to generate
the vacuum is dependent on the
pipework volume
of the indoor unit and the length
of the refrigerant pipes. This
always takes at least 60 minutes.
Once any foreign gases and
humidity have been completely
extracted from the system, the
valves on the pressure gauge
station are closed and the valves
on the outdoor component are
opened as described in the chapter
on "Commissioning".

REMKO MD

22

Condensation
connection

Due to the dew point shortfall,
condensation forms on the
evaporator during the cooling
operation and on the liquefier
during heating operation.

Below the evaporator is a catch
pan, which must be connected
with a drain.
The lower part of the outdoor
component housing is formed in
the shape of a collection tray. The
condensate connection included
in the scope of delivery is to be
attached here.

■

The condensation pipe should
have a fall of min. 2 %.
(Fig. 10).
If necessary, fit vapour diffusion
tight insulation.

■

The condensation pipe from
the unit should run freely
into the drainage pipe. If the
condensation runs directly
into a sewer pipe, fit a trap to
prevent any unpleasant odours.

■

When operating the unit at
ambient temperatures below
0 °C , make sure to route the
condensation pipe freeze proof.
The lower part of the housing
is also to be kept frost free by
the customer, in order to ensure
permanent draining of the
condensate.
If necessary, fit supplementary
pipe heating.

■

After completed routing, check
for unobstructed condensation
discharge and ensure that a
permanent seal is provided.

10

Fall of condensation pipe

minimum
2% fall

The condensation hose is designed
to be installed on the left side
(view from front).

Electrical connection

Mains cable must be installed as
voltage supply to the indoor unit
and a control cable to the outdoor
component, with appropriate
safeguards.

CAUTION

All electrical installation work
should be performed by spe­cialist contractors. Isolate the
voltage supply when connect­ing the electrical terminals.

The device's scope of delivery
includes a five metre long, four­core control cable for connecting
the indoor unit to the outdoor
component. The control cable to
the outdoor component contains
a data line which serves to realise
communication between the
indoor unit and the outdoor
component. This is used for
controlling the cooling and heating
performance and for forwarding
fault indications to the indoor unit.

Condensation connection - outdoor unit

Opening for
condensation
connection

Condensation connection

Condensation pan of
outdoor component

Connecting the indoor unit

■

We recommend installing a
master / repair switch on the
building near the indoor unit.

■

Voltage is supplied to the
indoor unit, the outdoor unit
is supplied through the control
cable from the indoor unit to
the outdoor unit.

■

The terminal blocks for making
the connections are located on
the front of the unit. When the
unit is installed, measurements
can be made from the front by
removing the cover.

■

23

If an optionally available
condensation pump is used on
the unit, then - for the shut
off contact of the pump - an
additional relay to increase the
switching power to shut off the
compressor might be needed.

■

Control cables should be
screened if laid in areas exposed
to strong magnetic fields.

■

Details concerning the electrical
protection of the system are
given in the section on technical
data.

11

Connecting the indoor unit

CAUTION

Check all plugged and clamped
terminals to verify they are
seated correctly and making a
permanent contact. Re-tighten
as required.

Connecting the outdoor
component

Proceed as follows to connect the
cable:

1. Remove the cover from the side
wall.

2. Select the cable cross-section
according to the relevant
standards.

3. Terminate the cables as shown
on the electrical connection
diagram.

6. Support the cable in the strain
relief and re-assemble the unit.

12

Connecting the outdoor component

Cover

Terminal block
Control cable

Terminal block
Voltage supply

Strain relief

Control cable to outdoor
component

Electrical connection diagram

Connection MD 261 / 351

Outdoor component Indoor unit Mains cable

L1

L1

N

S

Phase conductor

N

Neutral conductor

S

Data line

Earth conductor

Indoor unit

Control cable
to outdoor
component

Voltage
supply

230 V~,
50 Hz,
L1 / N / PE

R

S

C

U
V
W

RY3

4

CN6

CN7

CN5

CN4

CN28

Cn26

N-B

CN3

CN2

CN1

CN15

CN14

CN16

L2

N-A

3

~

~

Cn10

REMKO MD

24

Electrical circuit diagram

MD 261-351 IT

Vaporiser fan

Swing motor

Mains cable
230V / 1~ /50 Hz

MD 261-351 AT

C

R

Y

Y/G

to outdoor component

B
R
C

Transformer

Sensor air inlet

Liquefier sensor

Sensor SL

BW

Y/G

Sensor OLP

W

R

Y/G

Air circulation
sensor

Sensor Vaporiser

Display­screen

Auto Restart

Sensor
Vaporiser

Y
B

A

Display­screen

Fuse 1A 250V

Thermostat

Crankcase heater

Reverse flow valve

Compressor

Y/G

R O Y

Colour code

A = brown
B = blue
C = black
Y = yellow

Liquefier fan

R

Condenser

O

Choke R6025C
Choke R1310/1514

Y

R = red
W = white
Y/G = yellow/green
O = orange

Before

25

commissioning

Add refrigerant

Commissioning

After the tightness check has
been successfully completed,
connect the vacuum pump via
the pressure gauge station to
the valve connections on the
outdoor component (see chapter
"Tightness check") and create a
vacuum.

Perform the following checks
prior to commissioning the
unit for the first time and after
any interventions affecting the
refrigerant circuit. Record the
results in the commissioning
report:

■

Check of all refrigerant
pipes and valves with leak
detection spray or soapy water
for leaks and for inadvertent
mix up of suction and injection
pipe, with the unit at a
standstill.

■

Check of all refrigerant
pipes and insulation for
damage.

CAUTION

Note that the employed
refrigerant is always filled in
liquid form!

NOTE

Check the overheating to
determine the refrigerant fill
quantity

CAUTION

Wear protective clothing when
handling refrigerant.

The equipment contains a basic
quantity of refrigerant. Beyond
these conditions, for refrigerant
pipe lengths of more than 5 meters
per circuit, an additional amount
of refrigerant must be added,
according to the following chart:

RVT 261 / 351

NOTE

Commissioning should only
be performed
and documented by specially
trained personnel.

The system can be commissioned
once all the components have
been connected and tested.
A functional check should be
performed to verify its correct
function and identify any unusual
operational behaviour prior to
handing it over to the operator.

NOTE

Check that the stop valves
and valve caps are tight after
carrying out any work on the
refrigerant circuit. If necessary,
use appropriate sealant
products.

Function test and test run

■

Check of all electrical
connections between indoor
unit and outdoor component
for correct polarity.

■

Check that all fastenings,
mountings etc. are firm and at
the correct level.

Basic pipe length

Up to and incl.
5m

5m to max. 15m 30 g/m

Additional fill

quantity

0 g/m

Check the following points:

■

Leak tightness of refrigerant
pipes.

■

Compressor and fan running
smoothly.

■

In cooling mode, cold air should
be output by the indoor unit,
and warm air should be output
by the outdoor component.

■

Functional test of the indoor
unit and all program sequences

■

Check of the surface
temperature of the suction
pipe and determination of
vaporiser overheating. To
measure the temperature, hold
the thermometer to the suction

REMKO MD

26

pipe and subtract the boiling
point temperature reading on
the pressure gauge from the
measured temperature.

■

Record the measured
temperatures in the
commissioning report.

Functional test for cooling
and heating modes

1. Remove the caps from the
valves.

2. Begin the commissioning
process by briefly opening the
blocking valves of the external
section until the manometer
displays a pressure of approx.
2 bar.

3. Use leak detection spray or
suitable devices to check that all
the connections are tight.

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

5. Switch off the main circuit
breaker or remove the fuse
(provided by the customer).

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

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

10.

Switch the indoor unit to
cooling mode.

11.

Check the correct function
and settings of all regulation,
control and safety devices
during the test run.

12.

Check the control system in the
indoor unit using the functions
described in the manual.
Timer, temperature settings and
all mode settings.

13.

Check the overheating,
outdoor, indoor, outlet and
vaporisation temperatures and
record the measured values in
the commissioning report.

14.

Switch the indoor unit to
heating mode.

Final tasks

■

Re-fit all the dismantled parts.

■

Familiarize the operator with
the system.

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

7. Measure and record all
the required values in the
commissioning report and
check the safety functions.

15.

Check all the previously
described safety devices and
functions during the test run.

16.

Enter the measured data in the
commissioning report.

17.

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

Unit dimensions

27

MD 261 IT / MD 351 IT

280

MD 261 AT / MD 351 AT

760

530

815

215

270

590

290

Dimensional and design changes to advance technical progress are reserved.

REMKO MD

28

Exploded view MD 261-351 IT

8

9

7

4

6

1

2

3

5

12

We reserve the right to modify the dimensions and constructional

design as part of the ongoing technical development process.

Spare parts list

No. Designation MD 261 IT MD 351 IT

1 Complete front face

2 Air filter, set

3 Board, display

4 Swing motor

5 Air outlet fins, set

6 Condensation tray

7 Vaporiser

8 Fan wheel

9 Fan motor

10 Control board

11 Transformer

12 IR remote control

Spare parts (not illustrated)

Air circulation sensor

Vaporiser sensor

1109700 1109714

1109701 1109715

1109702 1109716

1109703 1109717

1109704 1109718

1109705 1109719

1109706 1109720

1109707 1109721

1109708 1109722

1109709 1109723

1109710 1109724

1109711 1109725

1109712 1109726

1109713 1109727

11

10

When ordering spare parts, please state the computerised part no., unit number and type (see identification plate)!

Exploded view MD 261-351 AT

29

1

2

3

5

4

6

9

10

11

12

7

We reserve the right to modify the dimensions and constructional

design as part of the ongoing technical development process.

Spare parts list

No. Designation MD 261 AT MD 351 AT

1 Front panel

2 Fan blade, liquefier

3 Fan motor, liquefier

4 Liquefier

5 Cover panel

6 Side part

7 Compressor, cpl.

8 Condenser, liquefier fan

9 Stop valve, suction pipe

10 Stop valve, injection pipe

11 Valve cover

12 Reverse flow valve

Spare parts (not illustrated)

Control board

Condenser, compressor

Choke CN1

Choke CN2

Temperature sensors, set

1109761 1109778

1109762 1109779

1109763 1109780

1109764 1109781

1109765 1109782

1109766 1109783

1109767 1109784

1109768 1109785

1109769 1109786

1109770 1109787

1109771 1109788

1109772 1109789

1109773 1109790

1109774 1109791

1109775 1109792

1109776 1109793

1109777 1109794

When ordering spare parts, please state the computerised part no. and unit number (see identification plate) !

REMKO MD

30

Technical data

Series MD 261 MD 351

Operating mode

Nominal cooling output

Nominal heating output

Energy efficiency class, cooling

Energy efficiency ratio EER

Energy efficiency class, heating

Coefficient of performance COP

1)

2)

1)

1)

2)

2)

kW 2.68 (0.82 to 3.41) 3.56 (1.05 to 4.53)

kW 2.96 (0.98 to 3.64) 3.86 (1.14 to 4.78)

Operating range (room volume), approx. m³ 80 110

Refrigerant R 410A

Voltage supply V/Hz 230 / 1~ / 50

1)

Nom. electrical power consumption, cooling
Nom. electrical power consumption, heating
Electr. nominal power consumption cooling

Electr. nominal power consumption heating

1)

2)

kW 0,63 (0,32-1,10) 0,91 (0,41-1,48)

2)

kW 0,67 (0,35-1,15) 0,96 (0,43-1,56)

Electr. starting current, max. A 17 20

Refrigerant connection, injection pipe Inches

Refrigerant connection, suction pipe Inches

Max. operating pressure kPa

Data specific to

indoor unit

Adjustment range, room temperature °C +17 to +30

Working range °C +17 to +32

Air flow rate per stage m³/h 375/515/650 375/500/675

Noise output per stage

3)

dB(A) 30/35/39 30/37/40

Protection degree IP X0

Condensation connection mm 16

Dimensions Height mm 280 280

Width mm 815 815

Depth mm 215 215

Weight kg

Data specific to

outdoor component

Working range, cooling °C -15 to +50

Working range, heating °C -15 to +34

Air flow rate, max. m³/h 1900

Protection degree IP 24

Noise output max.

3)

dB(A) 49 50

Refrigerant, basic quantity kg 1,23 1,23

Refrigerant, additional quantity > 5 m g/m 30 30

Refrigerant pipe, max. length m 15 15

Refrigerant pipe, max. length m 10 10

Dimensions Height mm 590 590

Width mm 820 820

Depth mm 290 290
Weight kg 41,0 41,0
Serial number 757... 758...

Computerised part no. 1631260 1631350

Inverter-wall room air conditioner combination for cooling and heating

A A

4,25 3,75

A A

4,42 4,02

A 3,00 (1,42-4,87) 4,25 (1,84-6,52)

A 3,09 (1,55-5,10) 4,34 (1,92-6,93)

(mm) 1/4 (6,35) 1/4 (6,35)

(mm) 3/8 (9,52) 1/2 (12,70)

4200 / 4200

MD 261 IT MD 351 IT

10,0 10,0

MD 261 AT MD 351 AT

1) Air inlet temperature TK 27°C / FK 19°C, outdoor temperature TK 35 °C, FK 24 °C, max. air volume, 5m pipe length

2) Air inlet temperature TK 20°C, outdoor temperature TK 7°C, FK 6°C, max. air volume, 5m pipe length

3) Distance 1 m free air

Notes

31

REMKO ACROSS EUROPE

… and in your area!
Profit from our experience and advice

REMKO GmbH & Co. KG.

Klima- und Wärmetechnik

Im Seelenkamp 12 · 32791 Lage

Postfach 1827 · 32777 Lage

Telephone [phone]

Fax [phone]

E-mail [email protected]

Internet www.remko.de

Hotline

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[phone]

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[phone]

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Service
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Consultancy

Intensive training means our

consultants are always up-to-date

with the latest developments. This

has given us the reputation of being

more than just a good and reliable

supplier:

REMKO, a partner who helps solve

problems.

Sales

REMKO not only has a well-

established sales network at home

and abroad, it also employs highly

trained sales specialists.

REMKO Our field staff are more

than just salesmen: above all, they

must advise our clients in the areas

of air conditioning and heating

technology.

Customer Service

Our equipment is precise and

reliable. However, should a fault

should occur REMKO customer

service is quickly at your side.

Our comprehensive network of

experienced dealers guarantees

quick and reliable service.

Subject to technical modifications, no responsibility taken for the correctness of information!