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REMKO Luftkonditionering MD261

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Sida 1/32

Issue GB – T11

REMKO MD

MD 261, MD 351

Inverter wall - room air conditioner in split design

Operation · Technology · Spare parts

Contents

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!

Safety notes 4

Environmental protection and recycling 4

Warranty 4

Transport and packaging 5

Description of the equipment 5

Operation 6-12

Shutdown 13

Care and maintenance 13-14

Troubleshooting and customer service 15-16

Installation instructions for qualiﬁed personnel 16-19

Installation 19-21

Tightness check 21

Condensation connection 22

Electrical connection 22-23

Electrical connection diagram 23

Electrical circuit diagram 24

Before start up 25

Add refrigerant 25

Commissioning 25-26

Unit dimensions 27

Product illustration 28-29

Spare parts list 28-29

Technical data 30

Made by REMKO

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.

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.

Unit description

Transport and

packaging

The connection between the indoor unit and the outdoor component

made with refrigerant pipes.

Schematic of refrigerant circuit in indoor unit - cooling

Vaporiser fan

Connection to suction pipe

Connection to injection pipe

Vaporiser

Schematic of exterior refrigerant circuit

Liqueﬁer fan Reverse ﬂow valve

Liqueﬁer Filter dryer Capillary tube ﬂow regulator

Connection

valve

Injection pipe

Connection

valve

Suction pipe

Compressor

Connection

Manometer

Outdoor

component

System layout

Stop valve

Indoor unit

Liqueﬁer fan

Outdoor area

Injection pipe

Suction pipe

Control cable

Mains cable

Condensation pipe

Indoor area

Condensation pipe

Operation

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).

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.

Problems are shown in code

(see chapter Troubleshooting

and Customer service).

CAUTION

Immediately replace flat batter-

ies 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.

NOTE

Display on indoor unit

The display lights up according to the settings.

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 infra-

red remote control, the manual

operation is interrupted.

max. 6 m

Maximum distance

Display on indoor unit

Display

Defrosting / heating Compressor speedAutomatic mode

Timer

activated/deactivated Display for setpoint

and gauge

REMKO MD

"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.

"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.

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.

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.

Buttons on the remote control

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

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 Button

ON/OFF ON/OFF

Au to

Use the MODE button to select between the individual operating modes.

A total of 5 modes are available:

1. automatic selection of cooling or heating operation Automatic

2. predominantly summer operating mode Cooling

3. summer or winter operating mode Dehumidiﬁcation

4. predominantly winter operating mode Heating

5. only for circulation of airAir circulation

MODE Button

MODE

Automatic Cooling Dehumidiﬁcation Heating Air circulation

MODE MODE MODE MODE

SET TEMP

Auto

SET TEMP

Au to

SET TEMP

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.

AUTOMATIC Mode

Cooling

Heating

The nominal temperature is

under the room temperature

SET TEMP

Aut o

SET TEMP

Au to

SET TEMP

▲

▼

AIR

CIRCULATION

The nominal temperature is

above the room temperature

The

p q/

buttons can be used to reduce and increase the desired nominal

temperature.

Buttons

SET TEMP

ON/OFF

Au to

Button functions

REMKO MD

> 6 Min.> 3 Min.> 6 Min.

30 sec. 30 sec.

Nominal temperature

-2°C

Fan operation IT

Fan operation AT

Compressor operation AT

Actual

temperature Start cooling mode

Cooling mode

Stop cooling mode

Functional diagram

Operation

Stop

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.

COOLING Mode

SET TEMP

COOLING

OPERATION

SET TEMP

▲

▼

SET TEMP

In dehumidication 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 dehumidied. The fan speed should be set to

automatic in order to achieve a maximum level of dehumidication. In

automatic mode, the fan is switched on and off in intervals.

DEHUMIDIFICATION MODE

DE-

HUMIDIFICATION

MODE

30 sec.

Nominal temperature

-2°C

Fan operation IT

Fan operation AT

Compressor operation AT

Actual

temperature Start

Dehumidifying mode

Stop

Dehumidifying mode

Functional diagram

Operation

Stop

Low fan speed

SET TEMP

▲

▼

SET TEMP

ON/OFF

MODE

Au to

MODE

Tur bo

HEATING-

MODE

Heating mode operational sequence

> 6 Min.> 3 Min.> 6 Min.

30 sec. 30 sec.

Nominal temperature

+5 °C

Nominal temperature

+2 °C

Fan operation IT

Fan operation AT

Compressor operation AT

Actual

temperature Stop heating

operation

Heating mode

Start heating

mode

Functional diagram

Operation

StopReverse ﬂow valve

30 sec. 30 sec.

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.

< 7 Min.

Defrost period

15 sec. 60 sec.

Fan operation IT

Fan operation AT

Compressor operation AT

Operation

Stop

Reverse ﬂow valve

30 sec. 30 sec.

30 sec. 3 Min.

▲

▼

SET TEMP

MODE

Tur bo

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

SET TEMP

FAN

REMKO MD

The fan speed can be adjusted with this button. A selection can be made

between low, medium, high and automatic fan speed.

FAN Button

FAN

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.

AIR CIRCULATION Mode

AIR CIRCULATION

SET TEMP

MODE

Tur bo

FAN

Turb o

Tur bo

FAN

Tur bo

FAN

Tur bo

FAN

Tur bo

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

SLEEP/

TURBO

SLEEP/TURBO Button

Turb o

SLEEP/

TURBO

Tur bo

SLEEP/

TURBO

deactivated deactivated

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.

SWING and AIR DIRECTION Buttons

SWING SWING

ON TIMER

ON T I MER

deactivated

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 Button

•

TIMER-ON / OFF

TIMER ON button - activation delay

TIMER ON Activation-

delay

TIMER OFF button - switch-off delay

Switch-off

delay

Manual air distribution

There are individually adjustable

ﬁns for adjusting the horizontal air

distribution on the air discharge

side.

Moving indoor machinery,

e.g. fans, have the potential to

cause injury during operation!

Only make adjustments when

swing operation is switched

off.

CAUTION

Hr.

ON TI MER

Hr.

Off TIMER

Hr.

ON TIM ER

Off TI MER

TIMER

Hr.

ON TIM ER

Off TI MER

TIMER

Hr.

ON TIM ER

Off TI MER

TIMER OFF

Hr.

ON TIM ER

Off TI MER

TIMER

OFF

Hr.

ON TIM ER

Off TI MER

TIMER

OFF

Hr.

ON TIM ER

Off TI MER

Shift lever left

Manual air distribution

Shift lever right

REMKO MD

Shutdown

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 inuences 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.

Contact REMKO GmbH & Co. KG

or your contract partner for a list

of specialist companies near you.

Care and maintenance

Regular care and maintenance

serves to ensure trouble-free

operation and long service life of

the unit.

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 solvent-

based cleaning products. Do

not use a jet of water.

■

Clean the ns 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

rm.

This ensures the operational

reliability of your equipment!

TIP

Prior to performing any

work, ensure the equipment

is isolated from the voltage

supply and secured to prevent

accidental switch-on!

CAUTION

Type of task

Checks/Maintenance/ Inspections

Commissioning

Monthly

Six-monthly

Yearly

General • •

Measure voltage and current • •

Check compressor/fans are functioning

correctly • •

Check fan is functioning correctly • •

Dirt on liqueer/vaporiser • •

Check refrigerant ll quantity • •

Check condensation drain • •

Test insulation • •

Check moving parts • •

Sealing test for refrigerant circuit • •

The statutory regulations

require an annual sealing test

for the refrigerant circuit in

relation to the refrigerant

lling level. The inspection

and documentation is to be

carried out by corresponding

specialist engineers.

NOTE

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 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 lter for indoor unit

Clean the air lter at intervals of

no more than 2 weeks. Reduce this

interval in case of heavily soiled air.

Cleaning the lter

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 .(gure 1)

3. Lift the lter up slightly and pull

it out from underneath.

4. Clean the lter with a

commercially available vacuum

cleaner. In order to do so, turn

the dirty side upward .(Fig. 2)

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 lter

dry out properly in air before

replacing it in the unit.

7. Carefully insert the lter. 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.

2 Clean with a vacuum cleaner 3

Cleaning with lukewarm water

1 Fold grille upwards

REMKO MD

Troubleshooting and customer service

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!

Fault Possible cause Checks Remedial measures

The unit does not start

or switches itself off

Power outage, undervoltage,

defective mains fuse / main circuit

breaker switched off

Are all other electrical installations

functioning correctly?

Check voltage,

possible wait until turned on

again.

Damaged mains cable Are all other electrical installations

functioning correctly? Repair by a certied service centre

Waiting time after switch-on too

short

Have approx. 5 minutes elapsed

since the restart? Plan for longer waiting period

Temperate outside operating

temperature range

Are the fans in the indoor unit

and outside component working

correctly?

Take into account the temperature

range for the indoor unit and

outside component

Overvoltages caused by thunder

storms Has there recently been lightning?

Switch off the mains protection

and switch it back on / have it

checked by a specialist

Fault in external condensation

pump

Did the pump shut down due to

a fault?

Check and if necessary clean the

pump

The unit does not respond

to the remote control

Transmission distance too far /

receiver affected by interference

Does the indoor unit beep when

pressing a button?

Reduce the distance to less than 6

m or change position

Defective remote control Is the unit running in manual

mode? Replace the remote control

Receiver or transmitter unit

exposed to excessive solar

radiation

Does it function correctly in the

shade?

Place the receiver & transmitter

unit in the shade

Electromagnetic elds are

interfering with transmission

Does it function when

switching off possible sources of

interference?

Signal is not transmitted

when interference sources are

operational

Button on remote control jammed /

two buttons pressed at same time

Does the “Send” symbol appear

on the display?

Release the button / only press

one button

Batteries in remote control are at Have new batteries been inserted?

Is the display incomplete? Insert new batteries

The unit is running

but only provides

reduced cooling or heating

performance

Filter is unclean / air inlet / outlet

blocked by foreign items Have the lters been cleaned? Clean the lters

Windows and doors open.

Heating/cooling output increases

Have there been any

constructional /

application-related changes?

Close windows and doors / install

additional units

Neither cooling nor heating mode

has been set

Is the cooling/heating symbol

shown on the display?

Correct the settings for the unit

Fins on outdoor component

blocked by foreign items

Is the fan on the outdoor

component running

and are the ns unobstructed?

Check the fan or winter controller,

reduce the air resistance

Leaking refrigerant circuit Are there signs of frost on the ns

of the indoor unit? Repair by specialist

Condensation is leaking out

of the collection container

drainage pipe Blocked / damaged

Is unrestricted condensation

discharge ensured?

Cleaning of drain pipe and

collector reservoir.

Faulty external condensation

pump or oat

Is the condensation tray full and

the pump running?

Call out a specialist to replace the

pump

Condensation has not drained

away and has collected in the

condensation pipe

Is there a steady fall on the

condensation pipe? Check there is

no blockage in the pipe.

The condensation pipe must have a

fall. If necessary, clean the pipe

Condensation does not drain off

Are the condensation pipes

unblocked and is there a steady

fall? Are the condensation pump

and oat switch functioning

correctly?

The condensation pipe must have

a fall. If necessary, clean the pipe.

A faulty condensation pump and

oat switch should be replaced.

Malfunction

Problem display by blinker code

Display Cause Required action

Communication error between outdoor component and indoor unit

Contact specialist rm

E3 Liqueer fan controller faulty Contact specialist rm

E5 Sensor evaporator temperature faulty / short-circuited Contact specialist rm

E6 Sensor air circulation faulty / short-circuited or

sensor evaporator faulty / short-circuited Contact specialist rm

H4 Operating limits of outdoor component or indoor unit

exceeded Switch system off

P0 IGBT overvoltage protection Contact specialist rm

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

P2 Compressor overload protection Contact specialist rm

P4 Power board IPM shutdown system Contact specialist rm

Installation instructions for qualied 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

ow 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 inltration 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 ow back without

obstruction.

■

Make special preparations

regarding the oil return if the

outdoor unit is located above

the indoor unit. (See section

"Oil return ow 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

re could result.

REMKO MD

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

oor).

Outdoor component

The outdoor component is

designed for horizontal base

installation outdoors. It should

be placed on level, at and rm

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.

Wall openings

■

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!

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 oor

bracket on the ground.

Minimum clearance to snow

20 cm

Snow

Windbreak

Wind

Pipes and cables in wall breakthrough

Control cable

Condensation pipe

Injection pipe

Suction pipe

PVC tube

Rain

The unit should be at least 10 cm

off the ground when mounted on

the roof or ground. A oor bracket

is optionally available.

Sun

The liqueer on the outdoor

component radiates heat.

Exposure to direct sunlight will

further increase the temperature

of the ns and reduce the

heat output of the nned

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 sufcient shade

(responsibility of customer). One

possible solution is to build a small

roof. These measures should not

affect the ow of warm outlet air.

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.

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.

200

120

1500

120

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 ow 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 ow from

outside, preferably using

sufciently large air intakes

placed opposite each other

.(Figure 4)

Minimum clearances

Observe the minimum clearances

to allow access for maintenance

and repair work and facilitate

optimum air distribution.

MD 261 / 351 AT

A 150 mm

B 700 mm

C 400 mm

D 150 mm

E 200 mm

■

Comply with any regulations

and conditions affecting

the statics of the building.

If necessary, t acoustic

installation.

Minimum clearances

Air intake

Air outlet

Warm air Cold

Fresh air

Light

well

Outdoor component

Warm air

Light

well

Additional

fan

4 Installation inside buildings

Air intake

Air outlet

All values in mm

REMKO MD

Mounting points for wall bracket

MD 261 IT

MD 351 IT

All dimensions in mm

750

250

6565

815

270

Connection variations

1 Outlet on the wall, right

2 Outlet through the wall, right

3 Outlet through the wall, left

4 Outlet on the wall, left

Connection variations of

inner unit

Unit installation

The indoor unit is attached by

means of a wall bracket, under

consideration of air discharge side

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.

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.

Wall bracket for indoor unit

The wall bracket for the unit must

be attached with suitable screws

and anchors.

Installation

Installation should only be

performed by authorised

specialists.

NOTE

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.

Hooking in

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

The units are factory filled with

dry nitrogen to check for leaks.

The pressurised nitrogen is

released when loosening the

union nuts.

CAUTION

Connection of refrigerant

pipes

The on site connection of the

refrigerant pipes is made inside the

unit.

It may be necessary to t a reducer

or ared adapter to the indoor

unit. These ttings are included

as standard. Once installed, the

connections should be made tight

against vapour diffusion.

The following instructions describe

the installation of the refrigerant

circuit and the assembly of the

indoor unit and the outdoor

component.

The required pipe diameters are

given in the table "Technical

data".

2. Remove the factory-tted

protective caps and union

nuts on the connections.

These should be used during

installation.

3. Before anging the refrigerant

pipes, ensure that the union nut

is tted on the pipe.

4. Prepare the laid refrigerant

pipes as shown below

(Figure 6+7).

Only employ tools and

components suitable for

refrigeration applications.

NOTE

Flanging tool

7 Flanging the refrigerant pipe

Refrigerant pipe

Deburrer

6 Deburring the refrigerant pipe

8 Correct ange shape

Tighten 1. spanner

Counter

2. spanner

9 Tighten the tting

Tightening

torque:

14“

15-20 Nm

38“

33-40 Nm

12“

50-60 Nm

58“

65-75 Nm

34“

95-105 Nm

5. Verify that the shape of the

ange is correct .(Figure 8)

6. First connect and hand-tighten

the refrigerant connections

to ensure they are correctly

seated.

7. Now fully tighten the ttings

using 2 suitably sized open-

ended spanners. Use one

spanner to counter the force

when tightening the tting

(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

that they are sufciently

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.

11.

Use the wall or oor brackets

to t the outdoor component

against structural parts

approved to support the static

load (refer to the installation

instructions for the brackets).

REMKO MD

Produktspecifikationer

Varumärke:	REMKO
Kategori:	Luftkonditionering
Modell:	MD261
Färg på produkten:	Zwart
Vikt:	226.8 g
Snäll:	AV-zender & ontvanger
Maximal upplösning:	1920 x 1200 Pixels
Antal USB-anslutningar:	3
Anslutning för nätadapter:	Ja
Ljudingångar:	1
Ljudutgång:	1
Förvaringstemperatur:	-20 - 85 °C
DVI-ingångsportar:	1
DVI-utgångar:	1
Mått (B x D x H):	130.17 x 92 x 25 mm
AC-ingångsspänning:	100-240 V
Strömförbrukning (typiskt):	20 W
Drifttemperatur (TT):	0 - 55 °C
Relativ luftfuktighet i drift (VV):	0 - 95 procent