REMKO MXD 202 User Manual

Assembly and operating instructions

REMKO MXD 202, MXD 262, MXD 352, MXD 522

Ceiling cassette for inverter multi-split designed outdoor units

0047-2013-05 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............................................................................................................. 4

1.1 General safety notes....................................................................................................................... 4

1.2 Identification of notes...................................................................................................................... 4

1.3 Personnel qualifications.................................................................................................................. 4

1.4 Dangers of failure to observe the safety notes................................................................................ 4

1.5 Safety-conscious working............................................................................................................... 4

1.6 Safety notes for the operator........................................................................................................... 5

1.7 Safety notes for installation, maintenance and inspection.............................................................. 5

1.8 Unauthorised modification and changes......................................................................................... 5

1.9 Intended use................................................................................................................................... 5

1.10 Warranty........................................................................................................................................ 5

1.11 Transport and packaging.............................................................................................................. 6

1.12 Environmental protection and recycling........................................................................................ 6

2 Technical data....................................................................................................................................... 7

2.1 Technical data................................................................................................................................. 7

2.2 Unit dimensions .............................................................................................................................. 8

3 Design and function.............................................................................................................................. 9

3.1 Equipment description..................................................................................................................... 9

3.2 Combinations................................................................................................................................ 10

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

5

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

6 Installation........................................................................................................................................... 23

7 Condensate connection and safe drainage...................................................................................... 27

8 Electrical wiring................................................................................................................................... 28

8.1 General information....................................................................................................................... 28

8.2 Unit connection............................................................................................................................. 28

8.3 Electrical connection diagram....................................................................................................... 30

8.4 Choice of unit................................................................................................................................ 31

8.5 Electrical circuit diagram............................................................................................................... 32

9 Commissioning................................................................................................................................... 34

10 Shut-down............................................................................................................................................ 35

11 Troubleshooting and customer service ........................................................................................... 36

12 Care and maintenance........................................................................................................................ 39

13 Exploded view of the unit and spare parts list................................................................................. 41

13.1 Exploded view ............................................................................................................................ 41

13.2 Spare parts list............................................................................................................................ 42

14 Index..................................................................................................................................................... 43

3

REMKO MXD

1

1.1

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.

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.

Safety and usage instructions

General safety notes

Identification of notes

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.

4

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.

Safety notes for installation,

1.7
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.

1.9

Intended use

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

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.

Warranty

5

REMKO MXD

1.11

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.

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

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.

Transport and packaging

WARNING!

Environmental protection and recycling

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.

6

2

2.1

Technical data

Technical data

Series MXD 202 MXD 262 MXD 352 MXD 522

Operating mode

Nominal cooling output

Nominal heating output

1)

2)

kW 2,05 2,64 3,51 5,27

kW 2,34 3,22 3,81 6,00

Operating range (room volume),
approx.

m

Ceiling cassette for inverter multi-split designed outdoor

units for cooling and heating

3

60 80 110 160

Room-temperature adjustment range °C +17 to +30

Operating range °C +17 to +32

Refrigerant

Operating pressure max. / per cooling
circuit

kPa 4200 / 1500

R 410A

4)

Air flow volume per speed setting m³/h 380/445/580 380/445/580 500/570/720 635/690/800

3)

Sound press. level per speed setting

dB (A) 40/44/48 40/44/48 40/43/48 40/43/46

Sound power (Turbo mode) dB (A) 52 53 54 54

Power supply V/Hz 230 / 1~ / 50

Protection class IP X 0

Nom. electrical power consumption,
cooling

1)

Nom. electrical power consumption,
heating

2)

Nom. electrical current consumption,
cooling

1)

Nom. electrical power consumption,
heating

2)

Refrigerant connection - injection line

Coolant connection - suction line

W 15 15 20 102

W 15 15 20 102

A 0,06 0,06 0,08 0,44

A 0,06 0,06 0,08 0,44

Inch

(mm)

Inch

(mm)

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

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

Condensate drain mm 25 25 25 25

Condensate pump, max. pumping
capacity

mm
WS

500

7

175

570

285

215

260

28030

150

65

115

415

570

40

50

140

522

647

522

647

2

1

4

3

5

REMKO MXD

Series MXD 202 MXD 262 MXD 352 MXD 522

Dimensions ceiling cassette

Length mm 570 570 570 570

Width mm 570 570 570 570

Depth mm 260 260 260 260

Dimensions cover

Length mm 647 647 647 647

Width mm 647 647 647 647

Depth mm 50 50 50 50

Weight kg 15,0 16,0 17,0 18,0

Weight cover kg 2,5 2,5 2,5 2,5

Serial number 1324... 1325... 1326... 1327...

Computerised part no. 1623252 1623257 1623262 1623267

1)

Air intake temp. TK 27°C / FK 19°C, outdoor temp. TK 35°C / FK 24°C, max. air volume, 5m pipe length

2)

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

3)

Distance 1 m free field

4)

Contains greenhouse gas according to Kyoto protocol

For details of the energy efficiency see operating instructions corresponding external unit

2.2

Unit dimensions

Fig. 1: Dimensions MXD 202-522 (All measurements in mm)

1: Adjoining room connection
2: Fresh air connection
3: Implementation of electrical control line

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

4: Condensate drain
5: Refrigerant connection

8

B

A

4

3

5

6

1a

1b

2

7b

3 3

7a

8b8a

9b9a

2

1

4

3

3

3.1

The indoor unit serves to extract heat from the
indoor room being cooled. The outdoor unit then
expels this heat to the outside.

If combined heating/cooling units are operated as
heaters, the heat absorbed by the outdoor unit can
be discharged by the indoor unit into the room
being heated.

The unit series has priority "heating", this means
that units that are in heating or automatic mode,
other units in the system that are in cooling mode
can switch off.

The unit is designed for installation high up on
indoor walls.

Operation takes place using an infrared remote
control.

The indoor unit consists of a fin vaporiser, vapor­iser fan, controller and condensation pan.
The indoor unit can be combined with REMKO out­door units of series MVT 601DC, 901DC und
1051DC with sufficient combinations. The outdoor
component is controlled via the controller of the
indoor unit.

Cabled remote control and condensation pump are
available as an accessory.

Design and function

Equipment description

Fig. 2: System layout
(In this example: MVT 901 DC with 2 MXD 352)

A: Outdoor area
B: Indoor area
1 a,b: Indoor units
2: Outdoor unit
3: Condensate drain
4: Condenser fan
5: Power output
6: Shut-off valve
7 a,b: Suction pipe
8 a,b: Injection pipe
9 a,b: Control line

Refrigerant pipes are used to connect the indoor
unit to the outdoor unit.

Fig. 3: Schematic of refrigerant circuit

1: Evaporator
2: Evaporator fan
3: Connection suction pipe
4: Connection injection pipe

9

REMKO MXD

3.2

Combinations

Indoor units

The indoor units MXD 202-522 can be combined
with MVT 601DC, 901DC und 1051DC series out­door units. The following combinations are pos­sible.

Outdoor unit MVT 601 DC

Combina­tion

One indoor unit

1

2

3

4

Two indoor units

5

6

MXD

202

l

ll

MXD

262

l

ll

MXD

352

l

MXD

522

l

Combina­tion

11

12

13

Three indoor units

14

15

16

17

18

19

20

21

22

MXD

202

lll

ll l

ll

l ll

l l l

l

ll

MXD

262

lll

ll l

MXD

352

l

l l

l l

l

ll

MXD

522

l

l

7

8

9

10

11

Outdoor unit MVT 901 DC

Combina­tion

One indoor unit

1

2

3

4

Two indoor units

5

l l

l

l

MXD

202

l

ll

l l

MXD

262

l

ll

l

MXD

352

l

l

MXD

522

l

Outdoor unit MVT 1051 DC

Combina­tion

One indoor unit

1

2

3

4

Two indoor units

5

6

7

8

9

10

11

MXD

202

l

ll

l l

l

l

MXD

262

l

ll

l l

MXD

352

l

ll

l

MXD

522

l

l

6

7

8

9

10

l l

l

l

ll

ll

l

12

l

13

14

l

l l

ll

l

10

Outdoor unit MVT 1051 DC (Fortsetzung)

Combina­tion

Three indoor units

15

16

17

18

19

20

21

22

23

24

25

26

MXD

202

lll

ll l

ll

l ll

l l l

l

ll

l l

MXD

262

lll

ll l

l ll

MXD

352

lll

l

ll

MXD

522

l

l

Combina­tion

47

48

49

50

51

52

53

54

55

56

MXD

202

ll

lll

MXD

262

l ll

l l l l

lll

l

l

ll l l

ll ll

l lll

MXD

352

ll l

lll

MXD

522

ll

l

l

l

27

28

29

30

31

32

Four indoor units

33

34

35

36

37

38

39

40

41

l

ll

l

llll

llll

lll l

lll

ll ll

ll l l

l lll

l ll l

l l l

l

l l

ll l

llll

l

l

ll

ll

42

43

44

45

46

11

ll

l l ll

ll l

ll

lll l

ll

l l

l

max. 6 m

REMKO MXD

4

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
using the remote control, it can also be manually
operated.

Manual operation

The indoor units can be started manually. Press
the "MANUAL" button on the receiver unit of the
cover to activate automatic and the ooling mode
then. The third press turns the unit off. A pressing
again switches back to automatic mode. Within the
whole plant, the unit having manually setting the
cooling mode will be the guide unit. In manual
mode, the following settings apply:

Cooling mode: 24 °C, fan speed: AUTO

Heating mode: 26 °C, fan speed: AUTO

Pressing any button on the infrared remote control
interrupts manual mode.

Infrared remote control

The infrared remote control sends the programmed
settings over a distance of up to 6 m from the
receiver of the indoor unit. Data will only be
received correctly if the remote control is pointed at
the receiver and no objects obstruct the transmis­sion path.

First insert the batteries supplied on delivery (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 polarity (see mark­ings).

Operation

Fig. 4: Maximum distance

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!

12

Display on the indoor unit

2

1

4

6

3

5

4

1

7

8

10

11

3

2

13

9

5

6

12

14

15

1

2

3

4

The lit LED indicators show the settings:

LED OPERATION green = unit is on

LED TIMER yellow = timer is programmed

LED DEF/FAN red = defrosting active / air circulation mode

LED ALARM red = presence of a fault

Fig. 5: Display on the indoor unit

1: Unit for receiving signals from the remote con-

trol
2: Operation indicator
3: Timer indicator

Keys on the remote control

Fig. 6: Keys of the remote control

4: Key for manual operation
5: Fan Defrost
6: Alarm indicator

Key „ON/OFF“

Press this key to operate the unit.

Key " "

With this key, the desired temperature can be
decreased to 17°C.

Key " "

With this key, the desired temperature can be
increased up to 30°C.

Key „MODE“

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

1. Automatic mode

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

2. Cooling mode

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

13

5

6

7

8

9

10

11

12

13

14

15

REMKO MXD

3. Dehumidification mode

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

4. Heating mode

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

5. Air circulation mode

In this mode, the air in the room is circulated with
no change in temperature.

Key „FAN“

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

Automatic, high, medium and low fan speed.

Key „LED/FOLLOW ME“

Short press this button enables / disables the LED
display on the indoor unit.

With pressing this key longer then 2 sec., the
sensing of the room temperature is moved from the
interior unit to the remote control. The temperature
measured on the remote control is then transmitted
to the interior unit in certain intervals.

Key „SLEEP“

Pressing this key will automatically increase the
target temperature by 1 °C every hour in cooling
mode, and decrease the target temperature by 1
°C every hour in heating mode.

Key „TIMER ON"

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

Key „TIMER OFF“

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

Key „TURBO“

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

Key „SHORTCUT“

By first press on this button the setpoint to 24 ° C
and the fan speed is set to automatic. When the
button is pressed while the remote control during
the operation, the unit resets to the last setting
operating mode.

Key „SWING“

This key directly activates the oscillating function of
the fins for better air distribution in the room.

Key „DIRECT“

The position of the exhaust fins is determined with
this button. The fins change by pressing of the
„DIRECT“-key they position by 6°.

Key „LOCK“

This key can be used to lock the keys on the
remote control. Press again this key and the
remote control can be used again.

Key „RESET“

Press the "RESET" key to reset all settings to fac­tory settings.

14

10

6

7

8

9

54321

11 12 13

Remote control display

Fig. 7: Remote control display

1: Automatic mode
2: Cooling mode
3: Dehumidifying mode
4: Heating mode
5: Air circulation mode
6: Indicator signal transmission
7: Display for temperature/timer
8: Timer activated/deactivated
9: Display of fan speed
10: Sleep-mode aktivated
11: Follow-Me function aktivated
12: Remote control locked
13: Display on/off

Remote control on/off

The remote control's on/off function is shown at the
lower right of the remote control by a "circular
symbol".

Fig. 9: Remote control on/off

Key functions

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

Fig. 8: Key functions

15

5

4

3

2

1

MODE

MODE

MODE

MODE

REMKO MXD

" " and " "-keys

Using the key, the target temperature can be
adjusted up or down by 1°C. The temperature
range lies between 17°C and 30°C

"MODE" key

Use the MODE key to select between individual
operating modes.

A total of 5 modes are available:

1. Automatic

2. Cooling

3. Dehumidifying

4. Heating

5. Air circulation

Fig. 10: " " and " "-keys

Fig. 11: Mode key

16

"Automatic" mode

In automatic mode, the controller autonomously
selects between heating, circulation or cooling
mode based on the room temperature Tr and the
selected target value Ts. The target value can be
adjusted between 17°C and 30°C by means of the
"

" and " ". The fan speed is selected automati-

cally.

Fig. 12: "Automatic" mode

Funktion:

Tr<Ts=1 °C, then operating mode "Heating" is
selected.

Tr>Ts=2 °C, then operating mode "Cooling" is
selected.

Tr<-1 °C...Ts...+2 °C, then operating mode "Circu-
lation" is selected.

If after the compressor is shut down and not
required for more than 15 mins. within an operating
mode, then, in the event that the room temperature
deviates, the corresponding mode heating,

cooling or circulation will be selected again.

„Dehumidification“ mode

It is recommended that the target temperature be
set to 24°C in dehumidifying mode. Due to the low
temperature of the refrigerant, the dew point of the
air at the condenser is undercut. The excess mois­ture in the air is condensed by the vaporiser, the
room is dehumidified.

Fig. 13: "Dehumidification“ mode

„Cooling“ mode

In cooling mode, the air in the room is cooled down
to the adjusted nominal temperature. The desired
room temperature is set with the " " and " " keys
in 1 °C increments. If the room temperature is 0.5
°C above the selected nominal temperature, then
the interior unit starts to cool down the air in the
room. If the temperature falls to approx. 1 °C below
the set room temperature, the controller will switch
off the cooling function. To protect the compressor,
the controller only turns cooling on again after a
waiting period of 3 minutes.

The heating mode has priority!

Turns on the indoor unit to the heating mode,
switch off the other indoor units from which are
in cooling mode, the cooling. During heating
operation can not be cooled.

Fig. 14: „Cooling“ mode

17

4

3

2

1

FAN

FAN

FAN

FAN

REMKO MXD

„Heating“ mode

In the heating mode, you can heat the room in
spring or fall. The selected room temperature is set
using the "

" and " " keys in 1 °C increments. If
the room temperature is 1 °C below the selected
target temperature, the indoor unit starts to heat
the air in the room. If the set room temperature is
exceeded by approx. 1 °C, the controller will switch
off the heater function. To protect the compressor,
the controller will wait 3 minutes before switching
on the heating mode again. The fan operation
starts only at a temperature of 32 ° C at the heat
exchanger.

Fig. 15: „Heating“ mode

„FAN“ key

Function

1. Automatic

2. Low

3. Medium

4. High

Automatic function:

<ca. 1,5 °C = low level

> ca. 1,5 °C = middle level

> ca. 3,5 °C = high level

The heating mode has priority!

Turns on the indoor unit to the heating mode,
switch off the other indoor units from which are
in cooling mode, the cooling. During heating
operation can not be cooled.

Fig. 16: "Fan" key

18

LED

FOLLOW ME

> 2 sec.

SLEEP

„Follow-Me“ function

This function allows the transfer the measurement
of the room temperature from the indoor unit to the
remote control. Measuring the temperature at the
remote control is then transmitted at intervals to
the indoor unit.

„SLEEP“ key

A programming function is activated using this key,
which increases the target temperature in cooling
mode by 1°C after one hour and by 2°C after 2
hours. In heating mode, the target temperature is
decreased by 1 °C after one hour by 2 °C after 2
hours. The unit switches off automatically after 8
hours.

Fig. 17: „Follow-Me“ function

Fig. 18: "Sleep" key

19

3 sec.

TIMER

ON

TIMER

ON

3 sec.

TIMER

OFF

TIMER

OFF

REMKO MXD

„TIMER ON“ key

This key allows the unit is switched off in an
adjustable interval of 30 minutes (0.5 h) to switch

on the unit.

„TIMER OFF" key

This key allows the unit is switched on in an
adjustable interval of 30 minutes (0.5 h) to switch
off the unit.

Fig. 19: „TIMER ON“ key

Fig. 20: „TIMER OFF" key

20

TURBO

SELF CLEAN

LOCK

RESET

A

B

„TURBO/FP“ key

The maximum fan speed and the compressor is
activated by pressing the "TURBO/FP" key.

Fig. 21: „TURBO/FP“ key

„RESET“ key

With this recessed key the remote control can be
reset.

Fig. 23: „RESET“ key

„LOCK“ key

The functions of the remote control can be disa­bled with this recessed key. This can prevent acci­dental adjustment of the set values.

Cable remote control

Connection of an optional cable remote control

The plug for connecting a cable remote control is
located on the panel the ceiling cassette (s.
Fig. 24, [A]). The 5-wired cable, coming from the
display board, is provided with the designations A­E (s. Fig. 24, [B]).

Fig. 22: „LOCK“ key

Fig. 24: Connection of a cable remote control

21

300

300

300

300

300

REMKO MXD

5

Important notes prior to installation

Observe the operating manuals for the indoor unit
and the outdoor unit when installing the entire
system.

n Transport the unit in its original packaging as

n Check the contents of the packaging for com-

n Lift the unit on the corners and not on the

n The refrigerant piping (injection and suction

n Select an installation location which allows air

n Do not install the unit in the immediate vicinity

n Install the refrigerant piping from the indoor unit

n Seal off open refrigerant piping with suitable

n Only use the union nuts supplied with the

n Carry out all electrical wiring in accordance

n Ensure the electrical cables are properly con-

n Service openings should be provided in the

Installation instructions for qualified personnel

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

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

refrigerant or condensate drainage connec­tions.

pipe), valves and connections must be insu­lated against vapour density. If necessary also
insulate the condensate drainage line.

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

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

to the outdoor unit.

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

refrigerant piping. These should only be
removed shortly before connecting the refrig­erant piping.

with applicable DIN and VDE standards.

nected to the terminals. Otherwise there is a
risk of fire.

suspended ceiling to allow maintenance
access to the control box.

Selection of installation location

The indoor unit is designed for horizontal mounting
in suspended ceilings with Euroraster dimensions.
It can also be installed in other types of suspended
ceilings with different dimensions. Take into
account the installation height of the equipment.

Minimum clearances

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

Fig. 25: Minimum clearances MXD 262-522 (all
measurements in mm)

Installation materials

The indoor unit is fastened using a wall brace and
4 bolts (provided by the customer). In order to
complete the installation, use the supplied installa­tion material. Appropriate dowels, trapezoidal
sheet metal supports, steel profiles, fixing clips for
refrigerant and condensation pipes (as well as
laying ducts) and connection fittings for condensa­tion pipes must also be provided.

22

522

522

1

1

A

B

A

6

Unit installation

The unit is mounted on four threaded rods with the
cover face down. Take into account the ceiling grid
and any other installations.

1. Use the dimensions of the ceiling cassette to

2. Fit the indoor unit onto the threaded rods and

3. Ensure a clearance of 35 mm from the

4. Check that the unit is level.

5. The final task is to tighten the counternuts

Installation

NOTICE!

Installation should only be performed by
authorised specialists.

mark the fixing points for the threaded rods
on structural parts approved to support the
static load, and above the suspended ceiling.
(Fig. 26).

use the lower nuts to level the unit (Fig. 27

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

and attach the cover.

).

Fig. 27: Hooking in the unit (MXD 202-522)

1: Structural component
A: Minimum 35 mm
B: 265 mm

Fig. 28: Fasten the unit

A: Distance A

Fig. 26: Unit attachment (MXD 202-522)

23

MXD 262-522

Distance A 70 mm

Suspension 545 mm x 525 mm

2

1

2

REMKO MXD

Connecting the refrigerant lines

Bby customer on-site connecting the refrigerant lines are at a corner of the unit within the false ceiling. It may
be necessary to fit a reducing or extending adapter to the indoor units. These fittings are included with the
indoor unit as an accessory kit. Once installed, the connections should be sealed to prevent vapour diffusion.

Performence Indoor unit Refrig-

erant pipe

Indoor unit Con-

necting

EL SL SL EL SL SL EL SL

2,0 kW 1/4" 3/8" - 1/4" 3/8" - 1/4" 3/8"

2,6 kW 1/4" 3/8" - 1/4" 3/8" - 1/4" 3/8"

3,5 kW 1/4" 3/8" - 1/4" 3/8" - 1/4" 3/8"

5,2 kW 1/4" 3/8" Erw. 3/8" AT -> 1/2" IT 1/4" 1/2" - 1/4" 1/2"

Note: SL = Suction pipe (large pipe), EL = injection pipe (small pipe)

Adjacent room and fresh air connection

The indoor unit is designed to cool an adjacent
second room and, independently of this, to suction
in fresh air.

Reducing / extending Refrig-

erant pipe

Indoor unit MXD 202-522

Reducing / extending Con-

necting

Fig. 29: Adjacent room and fresh air connection

1: Fresh air connection
2: Adjacent room connection

NOTICE!

Only one adjacent room connection and one
fresh air connection may be used!

NOTICE!

The unit is factory filled with dry nitrogen for
leak testing purposes. The pressurised
nitrogen is released when the union nuts are
undone.

Installation instructions

To install the fresh air connection and the connec­tion for the adjacent room, proceed as follows:

1. Remember that directly behind the insulation
to be removed are the plate fins of the hea­texchanger and that these may by no means
be damaged (Fig. 30

2. Carefully remove the insulation behind the
opening. (Fig. 31).

3. Break through the corresponding openings
(Fig. 32).

4. Keep the vent pipe as short as possible and
lay it with as few bends as necessary.

5. Keep in mind that the flanged collar, screws,
flexible/folded spiral-seam pipes and insula­tion materials must be provided by the cus­tomer. These parts can all be purchased
from your dealer. (Fig. 33).

).

24

Fig. 30: Remove punching outs

max. 7 m

A

B

n There must be an opening created between

the two rooms that allows the air to circulate
between them.

n A maximum pipe length of 7 m may not be

exceeded (Fig. 34).

n To ensure that air is transported to the adja-

cent room, 1 or 2 of the 4 air outlets are to be
sealed on the indoor unit. To do this, use a
black strip with adhesive on one side which is
stuck to the opening(s) to be sealed. The strip
must be able to permanently withstand the
strain from the air pressure.

Fig. 31: Remove insulation

Fig. 32: Break through openings

Fig. 33: Mounting connecting piece

Fig. 34: Adjacent room connection

A: Main room
B: Adjacent room

Fresh air connection

As already described, it is possible to suction in
fresh air (outside air) in addition to the room air
with the indoor unit and regulate the temperature.
This is the preferred alternative in rooms where air
is used up quickly.

n Pay attention to local regulations for air treat-

ment.

n For the fresh air connection, a flanged collar

with a minimum diameter of 65 mm must be
mounting (Fig. 35).

Adjacent room connection

The indoor unit allows you to cool an adjacent
room via a duct system, e.g. in a suspended
ceiling. The following conditions must be met:

n Pay attention to local regulations for air treat-

ment.

n For the adjacent room connection, a flanged

collar with a minimum diameter of NW 150
must be mounting.

n The cooling capacity of the indoor unit must be

adequate for cooling both rooms.

25

AB

1

1

REMKO MXD

Fig. 35: Fresh air connection

1: Fresh air inlet
A: Outdoor
B: Indoor

n The quantity of fresh air may not exceed 10%

of the nominal circulating air volume; otherwise
it is possible that the unit will not work properly.

n To prevent rainwater from entering the unit, the

air may only be suctioned in by the fresh air
intake at a maximum speed of 2.5 m/s.

n To connect the fan, it is necessary for the cus-

tomer to install a separately fused electrical
installation.

In addition, in the following picture framed poly­styrene partition the drip pan must be removed
with a knife. (Fig. 36).

Fig. 36: Fresh air inlet

1: Fresh air inlet

26

A

C

B

D

16-20 mm

min. 2%

max.

500 mmWS

7

n The condensate tray should have an incline of

n IIf the level of the condensation pipe on the unit

n Guide the unit’s condensation pipe into the

n When operating the unit at outside tempera-

n Following installation, check that the conden-

Condensate draining

If the temperature falls below the dew point, con­densation will form on the cooling fins during
cooling mode. A collection tray together with a con­densation pump and float switch are fitted as
standard below the cooling fins. Should the float
switch trip a protective shutdown due to inade­quate removal of the condensation, the pump will
switch on immediately and run on for approx. three
minutes.

Condensate connection and safe drainage

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

is above that of the outlet, route the pipe verti­cally upwards and then with a fall to the drain

drain pipe. If the condensation is being guided
to a drainage pipe, please install a siphon-like
hose guideway which acts as an odour seal.
The diameter of the condens connecting piece
is 25 mm.

tures below 4 °C, ensure the condensate
drainage 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.

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

NOTICE!

The maximum capacity of the condensate
pump is 500 mm WS. External influences, such
as air-side back pressure, contamination, or
wear may cause a reduction in performance.
To ensure safe operation function, we recom­mend a maximum conveyor height of 450 mm
should not be exceeded!

Fig. 37: Condensate connection - wrong!

A: Faraway riser
B: To large/small condensate pipe
C: No slope
D: No free outlet

Ensured discharge in the event of leakage

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.

Fig. 38: Condensate connection - right!

27

REMKO MXD

8

8.1

A protected mains supply cable is to be connected
to the outdoor unit and four-wire control line is to
be connected to the indoor unit respectively and
protect accordingly.

n We recommend to install a main / repair switch

n The terminal blocks for making the connections

n If a condensate pump is available as an acces-

Electrical wiring

General information

DANGER!

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

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.

on the building near the indoor unit.

are located inside of the unit. After opening the
cover, they are reachable.

sory, when using a turn off switch of the pump
stop the power supply to the indoor unit.

8.2

Unit connection

Make the connection as follows:

1. Open the air inlet grill.

2. Remove the cover of the control box

(Fig. 40).

3. Guide the power-free cable through the edge
protection rings in the box and lock the cable
in the strain relief.

4. Then connect the cable according to the
wiring diagram.

5. Connect the electrical connector of the cover
with the corresponding counterparts of the
cassette. A confusion is not possible.

6. Re-assemble the unit.

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

Fig. 39: Accsess to the switch box

28

2

1

3

Fig. 40: Unit connection

1: Entrance power supply
2: Dismantle the cover of the switch box
3: Connection control line from the outdoor unit

29

230V/1~/50 Hz

L(A) N(A) S(A) L N

L(B)

N(B) S(B)

L(C) N(C) S(C)

L(D)

N(D) S(D)

L N S

L N S

L N S

L N S

A

1

B1 B2

B3 B4

2

2

REMKO MXD

8.3

Electrical connection diagram

Connection MVT 601 DC-1051 DC

Fig. 41: Electrical connection diagram

A: Outdoor unit MVT 601 DC-1051 DC
B: Indoor units MXD 202-522

1: Power supply
2: Communication lines

30

21

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

8.4

Choice of unit

Fig. 42: Choice of unit with DIP-switch

1: DIP-switch 1 (SW6)
2: DIP-switch 2 (SW7)

DIP-switch 1 (SW6) DIP-switch 2 (SW7)

Choice of temperature Choice of unit Unit

6 K

4 K

MXD 202

MXD 262

2 K

EEPROM-dependend

MXD 352

MXD 522

31

CE-KFR20Q4/BP3TN1Y(hb)-A.D.11.NP2-1

202302141057

CN23
ON/OFF

CN33
ALARM

SW6 SW1 SW7 S1 S2

FUSE1
T5A/250VAC

CN9 CN40

CN17

CN14 SWING

CN10

CON-debug

CN5 WATER

CN6 T1 T2

CN7

CN12
HEAT

CN1
POWER

CN13
PUMP

P4 NEWFAN L

P5 NEWFAN N

P1 N

P6

CN15

2

1

4

3

5 6

7

8

9 A

10

11

SW2

12

REMKO MXD

8.5

Electrical circuit diagram

MXD 202-352

Fig. 43: Electrical circuit diagram

A: Power supply control board
1: Swing motor
2: Connectivity cable remote control
3: MCC-bus
4: Connection display board
5: Liquide level switch condensate
6: Probe suction pipe, probe room temperature

7: External start/stop contact
8: DIP-switch
9: Alarm contact (optional)
10: External start/stop contact (optional)
11: Evaporator fan motor
12: Connection condensate pump

32

MXD 522

CE-KFR20Q4/BP3TN1Y(hb)-A.D.11.NP2-1

202302141057

CN23
ON/OFF

CN33
ALARM

SW6 SW1 SW7 S1 S2

FUSE1
T5A/250VAC

CN9 CN40

CN17

CN14 SWING

CN10

CON-debug

CN5 WATER

CN6 T1 T2

CN7

CN12
HEAT

CN1
POWER

CN13
PUMP

P4 NEWFAN L

P5 NEWFAN N

P6

SW3

CN4 H M L

2

1

4

3

5

6

7

8 9 A10

11 12

Fig. 44: Electrical circuit diagram

A: Power supply control board
1: Swing motor
2: Connectivity cable remote control
3: MCC-bus
4: Connection display board
5: Liquide level switch condensate

7: External start/stop contact
8: DIP-switch
9: Alarm contact (optional)
10: External start/stop contact (optional)
11: Connection condensate pump
12: Evaporator fan motor

6: Probe suction pipe, probe room temperature

33

REMKO MXD

9

Functional test for cooling mode

1. Switch the supply voltage on.

2. Use the remote control to turn on the unit and

3. Measure and record all the required values in

4. Check the control system for the unit using

5. Check the correct function of the condensa-

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.

Check the DIP switch settings on the PCB, as
illustrated on chapter "Choice of unit". If neces­sary, set the DIP switches to the appropriate
indoor unit type.

select the cooling mode, maximum fan speed
and lowest nominal temperature.

the commissioning report and check the
safety functions.

the functions described in the chapter "Oper­ation". Timer, temperature setting, fan
speeds and changing to air circulation or
dehumidifying mode.

tion line by pouring distilled water into the
condensation tray. A bottle with a spout is
recommended for pouring the water into the
condensation tray.

Functional test for heating mode

1. Switch the supply voltage on.

2. Use the remote control to switch on the unit

and select the heating mode, maximum fan
speed and highest nominal temperature.

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

4. Measure the air intake temperature of the
ceiling mounted cassette and the room tem­perature approx. 1.5 m above the floor. In the
event of deviation, correct any temperature
difference by means of the DIP switch SW1
(s.

Ä

on page 31).

5. Check the control system for the unit using
the functions described in the chapter "Oper­ation". Timer, temperature setting, fan
speeds.

Final tasks

n Reassemble all disassembled parts.
n Familiarise the operator with the system.

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.

34

10

Temporary shut-down

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

2. Shut down the system using the remote con-

3. Switch off the voltage supply to the unit.

4. Check the unit for visible signs of damage

Permanent shut-down

Ensure that equipment and components are dis­posed of in accordance with the applicable 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 near you.

Shut-down

air circulation mode or in cooling mode at the
maximum temperature setting in order to
remove any residual moisture from the unit.

trol.

and clean it as described in the chapter
"Care and maintenance"

35

REMKO MXD

11

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. For installations with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting
and customer service" in both manuals. Please inform your dealer if the unit is still not working correctly after
all the functional checks have been performed!

Malfunctions

Fault Possible cause Checks Remedy

The unit does not start or
switches it self off

Troubleshooting and customer service

Power outage, under­voltage, defective mains
fuse / main switch in off
position

Damaged mains cable Are all other electrical

Wait time after switching
on is too short

Temperature outside
operating range.

Are all other electrical
installations functioning
correctly?

installations functioning
correctly?

Have approx. 5 minutes
elapsed since the
restart?

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

Check voltage if neces­sary wait until turned on
again.

Repair by a specialist

Schedule longer waiting
periods

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

The unit does not
respond to the remote
control

Electrical surges caused
by thunderstorms

Fault in external conden­sation pump

Transmission distance
too far / receiver affected
by interference

Defective remote control Is the unit running in

Receiver or transmitter
unit exposed to exces­sive solar radiation

Electromagnetic fields
are interfering with trans­mission

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

Batteries in remote con­trol are flat

Have there been light­ning strikes in the area
recently?

Did the pump shut down
due to a fault?

Does the indoor unit
beep when pressing a
button?

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?

Switch off the mains
breaker 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 /
press only one button

Insert new batteries

The unit is running with
reduced or without
cooling / heating output

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

Have the filters been
cleaned?

Clean the filters

36

Fault Possible cause Checks Remedy

Windows and doors
open. Heating/cooling
loads increased

Neither cooling nor
heating mode has been
set

Fins on outdoor compo­nent blocked by foreign
objects

Leaking refrigerant circuit Are there signs of frost

Outdoor component icedupCheck outdoor compo-

Drainage pipe on collec­tion container clogged /
damaged

Faulty external conden­sation pump or float

Have there been any
structural / usage-related
changes?

Does the cooling symbol
appear on the display?

Is the fan on the outdoor
component running? Are
the fins unobstructed?

on the fins of the indoor
unit?

nent. Has the cassette
sensor on the outdoor
component been cor­rectly positioned?

Can the condensation
drain off without any
obstruction?

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

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

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

Clean the drainage pipe
and collection container

Call out a specialist to
replace the pump

Condensation discharge
on unit

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

Condensation does not
drain off

Float is stuck or jammed
due to excessive dirt

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

Are the condensation
lines unblocked and laid
on a slope? Are the con­densation pump and float
switch functioning cor­rectly?

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

Ensure there is a fall
when laying the conden­sation pipe and clean the
pipe

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

Should be cleaned by
specialist firm

37

REMKO MXD

Fault indication by flashing code

LED

OPERA-

TION

(green)

on on

on

on on

flashes

LED

TIMER

(orange)

on

flashes

LED

DEF/

FAN

(red)

Normal operation, no

Normal operation, no

flashes

LED

ALARM

(red)

OU Dis-

play

-

-

E7

Cause Required action

Normal operation, no
faults: heating mode

Normal operation, no
faults: cooling-, recircu­lating air or automatic
mode

faults: On timer pro­grammed

faults: Off timer pro­grammed

Probe recirculating air
defective/actuated

Probe vaporizer defec­tive/actuated

Communication error
between PCBs OU & IU

Check resistance on
sensor

Check resistance on
sensor

Check electrical connec­tion leads

-

-

-

-

flashes flashes E0 EEPROM error Check EEPROM

flashes on -

flashes -

flashes on E4

flashes on on E5

flashes on P0

flashes on on -

flashes flashes flashes P3

For further fault diagnosis and troubleshooting s. corresponding user manual outer part.

Shutdown inverter
module

Liquid level switch con­densate pump defective/
actuated

Probe outdoor tempera­ture OU actuated

Surge voltage on outdoor
unit

Overtemperature com­pressor

Mode conflict:

Set unit with fault display
on refrigerators and
other appliances to
heating mode

Power consumption on
OU too high

Contact specialist dealer

Check resistance and
temperature on sensor

Check power supply

Allow to cool compressor

Priority heating: program
all unitss on cooling
mode / de-energize

Check power consump­tion

-

38

12

Regular care and observation of some basic points
will ensure trouble-free operation and a long
service life.

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 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.

Care and maintenance

DANGER!

Maintenance

n We recommend a maintenance contract with

annual maintenance interval with an appro­priate specialist company.

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

Cleaning the cover of the indoor unit

1. Disconnect the supply voltage to the equip-

ment.

2. Open and fold down the air inlet guard on the
cover. The filter is held in place by the flaps
screwed in at the side of the guard (Page 16,
Fig. 1). (Fig. 45 ).

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

4. Switch the supply voltage back on.

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

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.

Commis-

sioning

l

l

l

l l

l

l

l

l

l

Monthly Every 6

months

l

l

Yearly

l

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39

REMKO MXD

Air filter for indoor unit

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

Cleaning the filter

1. Disconnect the supply voltage to the equip-

ment.

2. Open and fold down the air inlet guard on the
cover. The filter is held in place by the flaps
screwed in at the side of the guard. (Fig. 45).

3. Tilt the filter to lift it out (Fig. 45).

4. Clean the filter using a normal vacuum

cleaner (Fig. 46). To do so, turn the dirty side
upward.

5. Dirt can also be removed by carefully
cleaning with lukewarm water and mild
cleaning agents. To do so, turn the dirty side
downward (Fig. 47

6. When using water, allow 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 cover as described above but in
reverse order.

9. Switch the supply voltage back on.

10. Switch the unit on again.

).

Fig. 46: Cleaning using a vacuum cleaner

Fig. 47: Cleaning with lukewarm water

Cleaning the condensation pump

The indoor unit includes a built-in condensation
pump, for pumping the condensation to a drain at
a higher level.

The pump is more or less maintenance free. The
condensation pipes should be checked for dirt at
regular intervals. Clean them as required.

If an external pump is also used, observe the
maintenance and care instructions given in the
separate operating manual.

Fig. 45: Pull out the filter

40

13

13.1

Exploded view of the unit and spare parts list

Exploded view

Fig. 48: Exploded view MXD 202-522

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

41

REMKO MXD

13.2

No. Designation MXD 202 MXD 262 MXD 352 MXD 522

1 Condensation tray 1111053 1111053 1111053 1111053

2 Vaporiser 1111076 1111077 1111078 1112509

3 Fan wheel 1111056 1111056 1111056 1111056

4 Vaporiser fan motor 1112500 1112500 1112500 1112510

5 Control board 1112501 1112501 1112508 1112511

6 Condensation pump, cpl. 1111062 1111062 1111062 1111062

7 Condensation float switch 1112502 1112502 1112502 1112502

8 Display board 1111064 1111064 1111064 1111064

9 Cover cpl. 1112503 1112503 1112503 1112503

10 Air filter 1112504 1112504 1112504 1112504

11 Fin motor 1111068 1111068 1111068 1111068

12 Outlet fins, set of 4 1112505 1112505 1112505 1112505

Spare parts list

From series: 1324... 1325... 1326... 1327...

13 Set of temperature probe 1112506 1112506 1112506 1112506

14 IR remote control 1112507 1112507 1112507 1112507

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

42

14

A

Adjacent room and fresh air connection............ 24

Adjacent room connection........................... 24, 25

C

Cable remote control.......................................... 21

Care and maintenance....................................... 39

Choice of temperature....................................... 31

Choice of unit..................................................... 31

Cleaning

Combinations..................................................... 10

Condensate draining ......................................... 27

Connecting the refrigerant lines......................... 24

Customer service .............................................. 36

D

DIP-Schalter....................................................... 31

Display on the indoor unit ................................. 13

Disposal of equipment......................................... 6

E

Electrical circuit diagram.............................. 32, 33

Electrical connection.......................................... 28

Electrical connection diagram............................ 30

Ensured discharge in the event of leakage ....... 27

Environmental protection..................................... 6

Exploded view ................................................... 41

F

Fault indication by flashing code........................ 38

Flashing code..................................................... 38

Fresh air connection.................................... 24, 25

Fresh air inlet..................................................... 26

Functional test

G

Greenhouse gas according to Kyoto protocol...... 8

I

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

Installation instructions....................................... 24

Installation location, selection............................ 22

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

Index

Air filter for indoor unit .................................. 40

Condensation pump ..................................... 40

Cover of the indoor unit

Cooling mode................................................ 34

Heating mode................................................ 34

................................. 39

Intended use........................................................ 5

K

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

M

Maintenance...................................................... 39

Malfunctions

Checks.......................................................... 36

Possible cause.............................................. 36

Remedy......................................................... 36

Manual operation............................................... 12

Minimum clearances.......................................... 22

O

Order spare parts list......................................... 42

R

Refrigerant lines, connecting............................. 24

Remote control

keys............................................................... 13

S

Safety

Dangers of failure to observe the safety

notes............................................................... 4

General........................................................... 4

Identification of notes...................................... 4

Notes for inspection........................................ 5

Notes for installation....................................... 5

Notes for maintenance.................................... 5

Personnel qualifications.................................. 4

Safety-conscious working............................... 4

Safety notes for the operator.......................... 5

Unauthorised modification ............................. 5

Unauthorised replacement part manufacture.. 5

Selection of installation location......................... 22

Shut-down

Permanent.................................................... 35

Temporary..................................................... 35

Spare parts list................................................... 42

T

Troubleshooting and customer service ............. 36

U

Unit installation................................................... 23

W

Warranty.............................................................. 5

43

REMKO MXD

44

45

REMKO MXD

46

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 [email protected]
Website www.remko.de