Remko RVD 355 DC, RVD 1055 DC, RVD 685 DC, RVD 525 DC User guide

Operating and
installation instructions

REMKO RVD series

Ceiling cassettes for cooling and heating

RVD 355 DC, RVD 525 DC, RVD 685 DC, RVD 1055 DC

0221-2020-01 Edition 3, en_GB

Read the instructions prior to performing any task!

R32

Refrigerant

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!

Translation of the original

Table of contents

1 Safety and usage instructions............................................................................................................. 5

1.1 General safety notes....................................................................................................................... 5

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

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

1.4 Dangers of failure to observe the safety notes................................................................................ 5

1.5 Safety-conscious working............................................................................................................... 6

1.6 Safety instructions for the operator................................................................................................. 6

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

1.8 Unauthorised modification and changes......................................................................................... 7

1.9 Intended use................................................................................................................................... 7

1.10 Warranty........................................................................................................................................ 7

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

1.12 Environmental protection and recycling........................................................................................ 8

2 Technical data........................................................................................................................................ 9

2.1 Unit data.......................................................................................................................................... 9

2.2 Unit dimensions, outdoor unit........................................................................................................ 12

2.3 Unit dimensions, indoor unit.......................................................................................................... 13

3 Design and function............................................................................................................................ 14

3.1 Unit description............................................................................................................................. 14

4 Operation............................................................................................................................................. 15

4.1 General notes................................................................................................................................ 15

4.2 Display on indoor unit.................................................................................................................... 16

4.3 Keys on the remote control........................................................................................................... 17

5 Installation instructions for qualified personnel.............................................................................. 23

5.1 Important notes prior to installation............................................................................................... 23

5.2 Wall openings................................................................................................................................ 23

5.3 Installation materials..................................................................................................................... 23

5.4 Selection of installation location ................................................................................................... 24

5.5 Minimum clearances..................................................................................................................... 25

5.6 Oil return measures....................................................................................................................... 26

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

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

6.2 Connection of refrigerant piping.................................................................................................... 28

6.3 Leak testing................................................................................................................................... 30

6.4 Adding refrigerant.......................................................................................................................... 31

7 Condensate drainage connection and safe drainage...................................................................... 31

8

Electrical wiring................................................................................................................................... 33

8.1 General connection and safety instructions.................................................................................. 33

8.2 Connecting the indoor unit............................................................................................................ 33

8.3 Outdoor unit connection................................................................................................................ 34

8.4 Electrical wiring diagram............................................................................................................... 35

8.5 Electrical drawings........................................................................................................................ 39

8.6 Connection of a superordinate controller provided by the customer ............................................ 47

9 Before commissioning....................................................................................................................... 48

10 Commissioning................................................................................................................................... 48

11 Shutdown............................................................................................................................................. 49

3

REMKO RVD series

12 Troubleshooting, customer service and fault analysis................................................................... 50

12.1 Troubleshooting and customer service....................................................................................... 50

12.2 Indoor unit fault analysis............................................................................................................. 54

12.3 Resistances of the temperature probes...................................................................................... 65

13 Care and maintenance........................................................................................................................ 68

14

Exploded view and spare parts lists................................................................................................. 70

14.1 Exploded view - Indoor unit RVD 355-525 DC ........................................................................... 70

14.2 Spare parts list - Indoor unit RVD 355-525 DC........................................................................... 71

14.3 Exploded view - Indoor unit RVD 685-1055 DC ......................................................................... 72

14.4 Spare parts list - Indoor unit RVD 685-1055 DC......................................................................... 73

15 Exploded view - Outdoor unit RVD 355 DC....................................................................................... 74

16 Spare parts list - Outdoor unit RVD 355 DC...................................................................................... 75

17 Exploded view - Outdoor unit RVD 525 DC....................................................................................... 76

18 Spare parts list - Outdoor unit RVD 525 DC...................................................................................... 77

19 Exploded view - Outdoor unit RVD 685 DC....................................................................................... 78

20 Spare parts list - Outdoor unit RVD 685 DC...................................................................................... 79

21 Exploded view - Outdoor unit RVD 1055 DC..................................................................................... 80

22 Spare parts list - Outdoor unit RVD 1055 DC.................................................................................... 81

23 Index..................................................................................................................................................... 83

4

1 Safety and

usage instructions

1.1 General safety notes

Carefully read the operating manual before com­missioning the units or their components for the
first time. It provides useful tips and notes such as
hazard warnings to prevent injury and material
damage. Failure to follow
manual can endanger persons, the environment
and the equipment itself or its components and will
void any claims for liability.

Store this manual and the information required for
the operation of this system (e.g. refrigerant data­sheet) in the vicinity of the unit.

The refrigerant used in the system is flammable. If
applicable, observe the local safety conditions.

the directions in this

DANGER!

This combination of symbol and signal word
warns of a situation in which there is immediate
danger
cause serious injury.

This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury

, which if not avoided may be fatal or

WARNING!

.

Warning of inflammable substances!

Identification of notes

1.2

This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.

Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.

Safety notes in this manual are indicated by sym­bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.

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.

DANGER!

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.

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.

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.

5

REMKO RVD series

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.

Safety instructions

1.6
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 (grills) 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 equipment parts or components

can lead to burns or injury

n The units and components must not be

exposed to any mechanical load, extreme
levels of humidity or extreme temperatures.

n Rooms in which refrigerant may escape shall

be adequately aerated and ventilated. Other­wise, a risk of suffocation or fire exists.

n Do not leave children unsupervised when close

to the system.

n Commissioning must be performed by author-

ised specialists exclusively. Deficient commis­sioning may lead to water leaks, electric
shocks or fire. Commissioning must take place
as described in the user manual.

n Only instruct authorised specialist personnel to

perform maintenance or servicing.

n The system is filled with a flammable refrig-

erant. Never thaw any frozen unit components
independently!

n Do not operate any further devices that pro-

duce high heat or naked flames in the same
room.

.

n All housing parts and unit openings, e.g. air

inlets and outlets, must be kept clear

n The units must be inspected by a service tech-

nician to ensure that they are safe to use and
fully functional at least once yearly. Visual
inspections and cleaning may be performed by
the operator when the units are disconnected
from the mains.

.

1.7 Safety notes for installation, maintenance and inspection

n The refrigerant R32 used in the system is flam-

mable. If applicable, observe the local safety
conditions.

n Keep the cooling circuit clear of other gases

and foreign substances. Only fill the cooling cir­cuit with the refrigerant R32.

n Only use the accessories, components and

appropriately marked parts provided. The use
of non-standardised components may result in
water leaks, electric shocks and fire.

n Only install and store the units in rooms larger

than 4 m2. With a failure to comply
result in the room filling with a flammable mix­ture!

The minimum room size of 4 m2 required for
installation and storage pertains to the basic fill
quantity of the unit. This varies according to the
installation type and total fill quantity of the
system. The calculation must take place in
accordance with valid DIN standards. Make
sure that the installation site is suitable for safe
unit operation.

n Only mount the unit components on structurally

suitable brickwork.

n The units must not be installed in rooms in

which further devices that produce heat are
operated (heaters, open hearths).

n Make sure the installation room is sufficiently

ventilated.

n Interventions in the cooling circuit are only pos-

sible after completely draining the refrigerant.
Never solder or grind unit components!

n Note that refrigerant may be odourless.
n Never operate the air conditioning unit in a

humid room, such as a bathroom or laundry
room. If the humidity is too high, this can cause
short circuits on electrical parts.

n The product must be correctly earthed at all

times, otherwise it may induce electric shocks.

n Attach the condensate drain as described in

the operating manual. The inadequate
drainage of condensate can lead to water
damage in your apartment.

n All persons who intervene in the cooling circuit

must hold a valid certificate from the chamber
of industry and commerce, which confirms their
ability to work with refrigerant.

, leaks may

6

n Appropriate hazard prevention measures must

be taken to prevent risks to people when per­forming installation, repair
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 Regional regulations and laws as well as the

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 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 may not be modified or

bypassed.

n The connection of the indoor unit must be

established as a permanent connection; a
detachable, reusable connection is not permis­sible.

, maintenance or

1.8 Unauthorised modification and changes

1.10 Warranty

For warranty claims to be considered, it is essential
that the ordering party or its representative com­plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.

The warranty conditions are detailed in the "Gen­eral business and delivery conditions". Further­more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.

1.1

1 Transport and packaging

The devices are supplied in a sturdy shipping con­tainer. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.

WARNING!

Plastic films and bags etc. are dangerous
toys for children!

Why:

- Leave packaging material are not around.

- Packaging material may not be accessible to
children!

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
use of other parts may invalidate liability for
resulting consequences.

. The

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.

7

REMKO RVD series

1.12 Environmental protection and recycling

Disposal of packaging

All products are packed for transport in environ­mentally friendly materials. Make a valuable contri­bution to reducing waste and sustaining raw mate­rials. Only dispose of packaging at approved
collection points.

Disposal of equipment and components

Only recyclable materials are used in the manufac­ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis­posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy­cling specialists or at collection points.

8

2 Technical data

2.1 Unit data

Series RVD 355 DC RVD 525 DC RVD 685 DC RVD 1055 DC

Operating mode

Nominal cooling output

Energy efficiency ratio SEER

1)

1)

Rated power consumption, elec­trical cooling

1)

kW

kW 0.85 1.63 2.19 3.95

Rated elec. curr. consump.,
cooling

Power consumption, annual,
QCE

Energy efficiency ratio, cooling

Nominal heat capacity

Energy efficiency ratio SCOP

Rated power consumption, elec­trical heating

1)

3)

2)

2)

kWh 157 304 402 602

1)

kW

4)

kW 1.10 1.46 2.05 3.00

Rated elec. curr. consump.,
heating

2)

Inverter ceiling cassette-room air conditioner combination

for cooling and heating

3.5

(1.5-5.3)

5.3

(2.9-5.7)

7.0

(3.2-8.2)

10.5

(4.0-12.0)

7.8 6.1

A 3.8 7.2 9.5 6.6

A++

3.1

(1.0-5.6)

4.2

(2.4-6.1)

5.4

(2.4-8.7)

8.1

(2.6-13.2)

4.6 4.0

A 5.0 6.4 8.9 5.0

Power consumption, annual,

3)

QHE

Energy efficiency ratio, heating

kWh 959 1435 1890 2835

2)

A++ A+

Max. power consumption kW 1.8 1.9 2.9 4.8

Max. current consumption A 7.9 8.5 12.5 8.3

EDP no. 1623845 1623855 1623865 1623875

1)

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

5 m pipe length

2)

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

3)

The specified value is based on results from standard testing.

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

4)

The specified value is based on the average heating period

9

REMKO RVD series

Associated indoor unit / series

Power supply V/Ph/Hz 230/1~/50

Application area (room
volume), approx.

Adjustment range
room temperature

Operating range °C/r.H.% +17 to +30 / 35-65

Air flow volume per stage

Sound pressure level per

5)

stage

Enclosure class IP X0

Refrigerant connection,
liquid pipe

Refrigerant connection,
suction pipe

Condensate drainage connec­tion

m

°C +17 to +30

m3/h

dB (A) 33/36/41 36/39/43 40/43/47 41/47/51

Inches

(mm)

Inches

(mm)

mm 25 32

RVD 355 DCITRVD 525 DCITRVD 685 DCITRVD 1055 DC

3

110 160 230 320

416/504/

617

1/4 (6.35) 3/8 (9.52)

3/8 (9.52) 1/2 (12.7) 5/8 (15.9)

540/625/

750

1032/1200/

1378

IT

1438/1620/

1775

Condensate pump,
flow rate, max.

Dimensions:
Length/width/depth

Cover dimensions: Length/
width/depth

Weight kg 18.7 28.0 32.5

EDP no. 1623847 1623857 1623867 1623877

5)

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

mm WS 500 750

mm 570/570/260 840/840/245

mm 647/647/50 950/950/55

10

Associated outdoor unit / series

RVD 355 DC

A

T

RVD 525 DCATRVD 685 DCATRVD 1055 DC

AT

Power supply V/Ph/Hz 230/1~/50 400/3~/50

Operating range, cooling °C

Operating range, heating °C

+5 to +50

+5 to +24

7)

7)

Air flow rate, max. m³/h 2000 2700 4000

Enclosure class IP 24

Sound power level max. dB (A) 63 64 68

Sound pressure level

Refrigerant

6)

5)

dB (A) 56 55 62 64

R32

Refrigerant, basic quantity kg 0.87 1.15 1.50 2.40

CO2 equivalent

t 0.59 0.78 1.01 1.62

Operating pressure, max. kPa 4300/1700

Refrigerant, additional quantity
>5m

g/m 15 30

Refrigerant piping, max. length m 25 30 50 65

Refrigerant piping, max. height m 10 20 25 30

Refrigerant connection,
liquid pipe

Refrigerant connection,
suction pipe

Dimensions:
Height / width / depth

Inches

(mm)

Inches

(mm)

3/8 (9.52) 1/2 (12.7) 5/8 (15.9)

1/4 (6.35) 3/8 (9.52)

mm 554/800/333 702/845/363 810/946/410

Weight kg 34.7 33.7 49.4 81.5

EDP no. 1623846 1623856 1623866 1623876

5)

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

6)

Contains greenhouse gas per the Kyoto protocol, GWP 675 (for further information, see chapter "Adding refrigerant")

7)

Can be expanded up to -15 °C with optional winter fan speed control

11

D

E

B

A

C

REMKO RVD series

2.2 Unit dimensions, outdoor unit

Fig. 1: Dimensions RVD 355-1055 DC AT (all measurements in mm)

Measurements (mm) A B C D E

RVD 355-525 DC 800 554 333 514 340

RVD 685 DC 845 702 363 540 350

RVD 1055 DC 946 810 410 673 403

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

12

2.3 Unit dimensions, indoor unit

A

9

6

1

2

600

3

54

7

8

>290

260

>2000

4

545
570
647

523

570

647

B

6

1

2

880

3

54

7

8

>275

245

>2000

9 4

780
840
950

680

840

950

Fig. 2: Dimensions (all measurements in mm)

A: RVD 355-525 DC
B: RVD 685-1055 DC
1: Ceiling
2: Suspended ceiling
3: Floor

5: Injection pipe connection
6: Ceiling cut-out
7: Unit trim
8: Suction pipe connection
9: Refrigerant piping connections

4: Condensate drainage connection

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

13

1

7

8

9

B

A

4

3

5

6

2

3

M

M

TE

PS H

T1

T2

T

3

T5

P

S

L

M1

M3

T2

T3

T4

T5

M2

PSL

PSH

T1

V1

EEV

FLT

1

B

A

REMKO RVD series

3 Design and function

3.1 Unit description

The RVD 355-1055 DC room air conditioners have
a REMKO RVD...AT outdoor unit as well as an
RVD...IT indoor unit.

In cooling mode, the outdoor unit serves to output
the heat extracted by the indoor unit from the room
being cooled. In heating mode, the heat taken up
by the outdoor unit can be discharged by the
indoor unit into the room to be heated. In both
operating modes, the output produced by the com­pressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conven­tional split systems and also reduces noise emis­sions to a particularly low level. The outdoor unit
can be installed in an outdoor area or, providing
that certain requirements are met, an indoor area.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and throttle element. The outdoor
unit is controlled by the regulation of the indoor
unit.

The indoor unit is designed for indoor areas, for
suspended ceilings with Euroraster dimensions.
The cassette is hidden behind the suspended
ceiling, only its cover is visible. It is operated by an
infrared remote control. The indoor unit consists of
a fin evaporator, evaporator fan, regulation system
and condensate tray with condensate pump.

Floor consoles, wall consoles, refrigerant piping
and winter fan speed control are available as
accessories.

Fig. 3: System layout RVD 355-1055 DC

A: Outdoor area
B: Indoor area
1: Indoor units
2: Outdoor unit
3: Condensate drainage line
4: Condenser fan
5: Power supply
6: Shut-off valve
7: Suction pipe
8: Injection pipe
9: Control lines

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

Fig. 4: Cooling cycle schematic RVD 355-1055 DC

A: Outdoor area
B: Indoor area
1: RVD 355-1055 DC
M1: Condenser fan
M2: Compressor
M3: Evaporator fan IT
V1: Changeover valve C/H
EEV: Elec. Expansion valve
FLT: Filter
OEL: Oil return line
PSH: High pressure switch AT
PSL: Low pressure switch AT
T1: Probe, heat gas AT
T2: Probe, air inlet AT
T3: Probe, condenser AT
T4: Probe, air inlet IT
T5: Probe, evaporator IT

14

max. 6 m

4 Operation

4.1 General notes

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

Manual mode

The indoor units can be put into operation man-

. Press the MANUAL key on the cover's

ually
receiver unit to first activate automatic mode and
then test mode. Pressing the button a third time
switches the unit off. Pressing the button again
switches back to automatic mode.

The following settings apply for manual operation:

Cooling mode: 24 °C, fan speed: AUTO

Test mode: 30 minutes cooling, high fan speed, the
IR remote control is deactivated, after 30 minutes
the unit changes over to automatic mode

Infrared remote control

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

Two AAA batteries must be inserted into the
remote control in preparation. To do so, remove
the flap from the battery compartment and insert
the batteries the correct way around (see mark­ings). Removing the batteries causes all stored
data to be lost. The remote control will then access
the default settings, which you are free to cus­tomise at any time.

Fig. 5: Maximum distance

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.

15

A

B

1 3 5

2

4 6

1

3

5

7

2

4

6

FUNC

REMKO RVD series

Wired remote control

Connection of an optional wired remote control

The plug for connection of a wired remote control
is located at the panel of the ceiling cassette (s.
Fig. 6, [A]). The 5-core cable, coming from the dis­play panel, is marked with the designations A-E (s.
Fig. 6, [B]).

4.2 Display on indoor unit

Display on indoor unit RVD 355-525 DC

The LED indicators illuminate to indicate the set­tings:

OPERA

TIMER LED yellow = timer programmed

DEF/FAN LED red = defrosting active/recirculation
mode

ALARM LED red = alarm present

Fig. 7: Display on the unit RVD 355-525 DC

1: Unit for receiving signals from the remote con-

2: Operation display
3: Timer indicator
4: Manual operation key
5: Defrosting fan
6: Malfunction indication

TION LED green = unit switched on

trol

Fig. 6: Wired remote control connection

Alarms are indicated by a code

VD 355-525 DC (see chapter Troubleshooting

R
and customer service).

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!

Display on indoor unit RVD 685-1055 DC

The LED indicators illuminate to indicate the set­tings:

Fig. 8: Display on the unit RVD 685-1055 DC

1: "Func” key
2: Operating lamp
3: “Timer” display activated / deactivated
4: Digital display
5: “Defrost phase” display
6: “Alarm” display
7: IR receiver

16

6

8

11

147

9

10

12

13

2

1

4

3

5

1

2

3

4

5

6

7

8

9

10

11

12

4.3 Keys on the remote control

“FRESH” key (no function)

"TURBO" key

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

“SELF CLEAN” key (no function)

“ARROW UP” and “ARROW DOWN” keys

“ARROW UP” key

Press the key in order to increase the setpoint in 1
°C steps to a maximum 30°C.

“ARROW DOWN” key

Press the key in order to reduce the setpoint in 1°C
steps to a minimum 17°C.

“SILENCE/FP” key (no function)

Fig. 9: Keys on the remote control

"ON/OFF" key

Press this key to switch the air conditioning unit on

f.

and of

Operating mode selection

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

Fan speed

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

"SLEEP" key

Activates/deactivates the "SLEEP" function.

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

"TIMER ON" key

Press this key to activate the unit start delay time.
Each press of this key increases the delay time by
30 minutes. When the set time on the display
exceeds 10.0, each press of the button increases
the set time by 60 minutes. T

o deactivate the delay

time, set the time to 0.0.

"TIMER OFF" key

This key can be used to program the delayed
switch-of

f time. Each press of this key increases
the switch-off time by 30 minutes. When the set
time on the display exceeds 10.0, each press of
the button increases the set time by 60 minutes. To
deactivate the switch-off time, set the time to 0.0.

Swing mode

Press this key to start or stop the swing mode.
With the 2-point key

, you can change the fin set-

tings on the left side. The right key has no function.

Press this key once to change the angle by 6
degrees. Pressing the key for 2 seconds stops the
swing function.

.

17

13

14

2

1

4

3

6

9

8

10

5

7

11

13 12

REMKO RVD series

"FOLLOW ME" key

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

"LED" key

This activates/deactivates the display on the indoor
unit.

Indicators on the LCD

Fig. 10: Indicators on the LCD

1: Mode indicator - shows the current operating

modes, including Auto ( ), Cooling ( ),
Dehumidification ( ), Heating ( ), Fan ( )
and back to Auto ( ) mode.

2: Signal transmission symbol. This symbol

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

3: ON/OFF symbol. This symbol appears when

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

4: TIMER ON symbol. This symbol appears

when TIMER ON is switched on.
5: ECO function (not available)
6: TIMER OFF symbol. This symbol appears

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

"Sleep" function is activated. Pressing this key

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

perature setting (-17°C~30°C). If "F

AN" mode
is selected, the temperature setting is not dis­played. In Timer mode, the ON and OFF set­tings appear for the TIMER.

10: FOLLOW ME symbol. This symbol appears

when the "Follow me" function is activated.

11: Display of ion generator active (optional)
12: Fan speed symbol. This is where the selected

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

(slow),

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

13: Silent mode active (optional)

18

1

3

2

1

4

2

3

The illustration of the LCD with all of the sym­bols present is only intended to provide a
clearer overview

. During operation, only those
symbols relevant to the respective functions
appear on the display.

Key functions

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

“Auto” mode (please observe notes!)

Make sure that the indoor unit is connected to the
power supply

, and is switched on.

The operating mode indicator on the display of the
indoor unit begins to flash.

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

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

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

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

Make sure that the indoor unit is connected to the
power supply

, and is switched on.

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

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

3. Press the "F

AN" key to select from the four

fan speeds (Auto, slow, medium and fast).

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

Fig. 11: "Auto" mode

Fig. 12: "Cooling", "Heating" and "Recirculation"
mode

19

1

3

2

2

1

REMKO RVD series

"Dehumidification" mode

Make sure that the indoor unit is connected to the
power supply

The operating mode indicator on the display of the
indoor unit begins to flash.

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

2. The temperature setting on the remote con­trol has no ef

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

, and is switched on.

fect on unit operation.

"Timer" mode

Press the "TIMER ON" key to set the "switch-on
time" and the "TIMER OFF" key to set the "switch­of

f" time for the unit.

Setting the “switch-on time”

1. Press the "TIMER ON" key
trol shows "TIMER ON", the last "switch-on
time" setting and the symbol "H" appear on
the display. The unit is now ready to reset the
"switch-on time" and to start "TIMER ON"
mode.

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

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

. The remote con-

, and

Fig. 13: "Dehumidification" mode

In the “Dehumidification” mode, manual selec­tion of the fan speed is not possible! Please
note that temperature pre-selection is not pos­sible and the dehumidified room can cool dra­matically!

Fig. 14: "Timer" mode

20

Start

Off

2 hours laterSet time

Stop

On

4 hours laterSet time

Setting the “switch-off time”

1. Press the "TIMER OFF" key

. The remote
control shows "TIMER OFF", the last "switch­off time" setting and the symbol "H" appear
on the display. The unit is now ready to reset
the "switch-off time" and to stop "TIMER
OFF" mode.

2. Press the "TIMER OFF" key again to set the
desired "switch-of

f time". Each time the key
is pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.

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

, and
the set temperature appears again on the
display.

– When T

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

– The effective operation for the time settings

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

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

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

Example TIMER function settings

"TIMER ON" (Auto on mode)

Example:

Y

ou want the air conditioning unit to switch on 2

hours from the time it was programmed.

1. Press the "TIMER ON" key

. The last oper­ating time setting for the timer, and the "H"
symbols, appear on the display.

2. Press the "TIMER ON" key until the desired
start time is shown in the "TIMER ON" area
on the remote control.

3. W

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

Fig. 15: "TIMER ON" example

"TIMER OFF" (Auto off mode)

Example:

ou want the air conditioning unit to switch off 4

Y
hours from the time it was programmed.

1. Press the "TIMER OFF" key

. The last oper­ating time setting for the timer, and the "H"
symbols, appear on the display.

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

3. W

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

Fig. 16: "TIMER OFF" example

21

On

Set time

Stop

Start

2 hours later
after setting

10 hours later
after setting

Off

Set time

Stop

Start

2 hours later
after setting

5 hours later
after setting

REMKO RVD series

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

"TIMER OFF ð "TIMER ON"

(On ð Stop ð Start)

Example:

Y

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

1. Press the "TIMER OFF" key.

2. Press the "TIMER OFF" key again until the

desired stop time is shown in the "TIMER
OFF" area on the remote control.

3. Press the "TIMER ON" key.

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

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

5. Wait for 3 seconds and the temperature

appears again in this area of the digital dis­play. The "TIMER ON" and "TIMER OFF"
indicators stay lit, and this function is acti­vated.

"TIMER ON ð

"TIMER OFF"

(Off ð Start ð Stop)

Example:

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

1. Press the "TIMER ON" key.

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

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

3. Press the "TIMER OFF" key.

4. Press the "TIMER OFF" key again until

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

5. Wait for 3 seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER ON" and "TIMER OFF"
indicators stay lit, and this function is acti­vated.

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

Fig. 18: "TIMER ON" / "TIMER OFF" example

22

5 Installation instructions for qualified personnel

21 5

3 4

5.1 Important notes prior to instal­lation

ransport the unit in its original packaging as

n T

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

n Check the contents of the packaging for com-

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

n Lift the unit on the corners and not on the

refrigerant or condensate drainage connec­tions.

n The refrigerant piping (injection and suction

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

n Select an installation location which allows air

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

n Do not install the unit in the immediate vicinity

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

n Only open the shut-off valves on the refrigerant

piping after installation is complete.

n Seal off open refrigerant piping with suitable

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

n Avoid unnecessary bends. This minimises the

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

n Use the fastening materials provided in the

scope of supply for the units. .

n Use four supports and the associated hooks to

attach the ceiling cassette.

n Use the insulated condensate hose in the

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

5.2 Wall openings

n A wall opening of at least 70mm diameter and

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

o prevent damage to the lines, the interior of

n T

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

n After installation has been completed, use a

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

Fig. 19: Wall opening

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

5.3 Installation materials

The indoor unit is attached using 4 threaded rods
provided by the customer

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

.

23

1

20 cm

1

REMKO RVD series

5.4 Selection of installation location

Indoor unit

The indoor unit is designed for horizontal ceiling
installation. The minimum distance from the floor
should be 2 metres.

Outdoor unit

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

Rain

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

Sun

The condenser on the outdoor unit emits heat.
Exposure to sunlight further increases the temper­ature of the fins and reduces the heat released by
the finned heat exchanger. The outdoor unit should
be installed on to the north side of the building
whenever possible. If necessary, take measures to
provide sufficient shade (responsibility of cus­tomer). This could be a small roof. However, the
discharging warm air flow must not be affected by
the measures.

. The

Wind

If the unit is being installed in windy areas, ensure
that the warm outlet air is discharged in the pre­vailing wind direction. If this is not the possible, it
may be necessary to install a windbreak (to be pro­vided by the customer). Ensure that the windbreak
does not adversely affect the air intake to the unit.
Additional stabilisation is recommended. This can
be realised with wire ropes or other constructions.

Fig. 20: Windbreak

1: Wind

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 unit. An optional wall
bracket is available as an accessory

.

Fig. 21: Minimum clearance to snow

1: Snow

24

2

1

K

3

W

3

1000

1000

E

C

B

A

D

2

1

1000

1000

1000

IT AT

Installation inside buildings

n Ensure that heat can dissipate adequately

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

Fig. 22).

n Install an additional fan with a rated flow com-

parative to that of the outdoor unit being
installed in the room and which can compen­sate any additional pressure loss in ventilation
ducts (Fig. 22).

n Comply with any regulations and conditions

fecting the statics of the building. If neces-

af
sary, fit acoustic installation.

Fig. 22: Installation inside buildings

K: Cold fresh air
W: Warm air

2: Additional fan
3: Air shaft

1: Outdoor unit

5.5 Minimum clearances

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

Fig. 23: Minimum clearances, indoor unit and outdoor unit (all measurements in mm)

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

A B C D E

RVD 355-1055 DC 300 2000 600 300 600

25

1

A

B

2

A

B

REMKO RVD series

5.6 Oil return measures

If the outdoor unit is installed at a higher level than
the indoor unit, suitable oil return measures must
be taken. Usually
every 7 metres of height difference.

Fig. 24: Oil return measures

AT: Outdoor unit
IT: Indoor unit
1: 1 x oil pump bend in suction pipe to outdoor

unit every 7 metres of height dif
radius: 50 mm

2: Max. 10-15 m

, an oil pump bend is installed for

ference,

6 Installation

6.1

Unit installation

NOTICE!

Installation should only be performed by author­ised specialists.

The unit is mounted with the cover facing down on
four threaded rods. T
grid and any other installations.

1. Use the dimensions of the ceiling cassette to
mark the fixing points for the threaded rods
on structural parts approved to support the
static load above the suspended ceiling
(Fig. 25).

2. Fit the indoor unit onto the threaded rods and
use the lower nuts to level the unit (

3. Adhere to a ceiling clearance of at least 30
mm. Connect the refrigerant piping, electrical
cables and condensate drainage line to the
indoor unit as described below

4. Check again that the unit is level.

5. The final task is to tighten the counternuts

and attach the cover

ake into account the ceiling

Fig. 26).

.

.

Fig. 25: Hooking in the unit

Indoor units
(all dimensions in mm)

RVD 355-525 DC 545 523

RVD 685-1055 DC 780 680

Measure-

ment A

Measure-

ment B

26

1

1

A

A

1

2

3

1

Fig. 26: Hooking in the unit

1: Structural component

Distance A

RVD 355 DC IT 290 mm

Indoor units

Distance

A

Suspended

unit

RVD 355-525 DC IT 23 mm 545x523 mm

RVD 685-1055 DC IT

10-18

mm

780x680 mm

Fresh air connection

The unit is prepared for the intake of fresh air.

Fig. 28: Fresh air connection

1: Fresh air connection

RVD 525 DC IT 290 mm

RVD 685 DC IT 275 mm

NOTICE!

Only use one fresh air connection

RVD 1055 DC IT 275 mm

NOTICE!

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

Fresh air connection

The unit can also be employed to suck in and reg­ulate the temperature of fresh air (outdoor air), in
addition to room air

. This is the preferred option for

rooms with a high rate of air consumption.

n Observe the regional regulations concerning

air treatment.

Fig. 27: Fastening the unit

n Fit a collar with a nominal diameter of 65 mm

to the fresh air connection (Fig. 29

).

A: Distance A
1: Ceiling
2: Suspended ceiling
3: Unit housing

27

AB

1

1

REMKO RVD series

Fig. 29: Fresh air connection

1: Outdoor air intake
A: Outside
B: Inside

n The fresh air content should not exceed 10% of

the nominal air flow rate for the unit. The fresh
air supply should be controlled by an additional
speed-regulated fan.

n The air at the outdoor air intake should be

sucked in through a dust filter at a maximum
rate of 2.5 m/s to prevent the ingress of rain

.

water

n The fan should be connected to a separately

protected electrical supply that is to be pro­vided by the customer.

6.2 Connection of

refrigerant piping

The refrigerant piping connection provided by the
customer takes place on one corner of the unit,
inside the suspended ceiling. Once installed, the
connections should be insulated to make them
vapour dif

Use only tools which are approved for use in an
HV
tubing cutters, de-burrers and flaring tools). Do
not cut refrigerant pipes with a saw.

All work must be carried out in a way that pre­vents dirt, particles, water etc. from entering,
refrigerant lines!

A detachable connection may only be estab­lished outside the room. To connect the indoor
units, use only the supplied, non-detachable
union nuts or provide a firm connection.

fusion proof.

NOTICE!

AC environment. (z. B.: bending pliers, pipe/

NOTICE!

NOTICE!

Fig. 30: Fresh air inlet

1: Fresh air inlet

Connection of the unit panel

The unit panel is bolted onto the ceiling cassette
with the 4 screws supplied. Connect the connec­tion cables between the unit panel and ceiling cas­sette together
nection cable of the swing motors must be
connected directly to the control board of the
ceiling cassette at contact CN14 (swing). A cable
with connecting plug may have been plugged in at
the factory. This must be removed for installation.

. When doing so, note that the con-

28

The following instructions describe the installation

2

1

1

of the cooling cycle and the assembly of the indoor
unit and the outdoor unit:

1. The required pipe diameters are given in the
table "T

2. Install the indoor unit and connect the refrig­erant piping as described in the operating
manual for the indoor unit.

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

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

5. Lay the refrigerant piping from the indoor unit
to the outdoor unit. Ensure that the fasten­ings are adequate and if necessary
appropriate oil return measures!

6. Remove the factory-fitted protective caps and
union nuts on the connections. These should
be used later in the installation process.

7. Before flanging the refrigerant piping, ensure
that the union nut is fitted on the pipe.

8. Prepare the laid refrigerant piping as shown
below (

9. V
(Fig. 33).

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

11. Then tighten the fittings with 2 appropriately­sized open-ended spanners. Use a spanner
to counter the force when tightening the fit­ting (Fig. 34).

12. Use insulation hoses which are designed for
this temperature range and are dif
proof.

13. Observe the permitted bending radius for the
refrigerant piping during installation. Never
bend a pipe twice in the same place. Brittle­ness and cracking can result.

14. Apply appropriate heat insulation to the
installed refrigerant piping, including con­nector

15. T
for all subsequent refrigerant piping.

echnical data".

fects of struc-

, take

Fig. 31 and Fig. 32).

erify that the shape of the flange is correct

fusion

.

ake the same action at the shut-off valves

Fig. 31: Deburring the refrigerant piping

1: Refrigerant piping /2: Deburrer

Fig. 32: Flanging the refrigerant piping

1: Flanging tool

Fig. 33: Correct flange shape

29

2

1

REMKO RVD series

6.3 Leak testing

Once all the connections have been established,
the pressure gauge station is attached to the corre­sponding Schrader valve connection as follows:

blue = large valve = suction pressure

Once the connection has been made successfully
the leak test is carried out with dry nitrogen.

Leak testing involves spraying a leak detection
spray onto the connections. If bubbles are visible,
the connections have not been made properly. In
that case, tighten the connection or, if necessary,
create a new flange.

After completing a successful leak test, the excess
pressure in the refrigerant piping is removed and a
vacuum pump with an absolute final partial pres­sure of min. 10 mbar is used to remove all of the
air and empty the pipes. Any moisture present in
the pipes will also be removed.

,

Fig. 34: Tightening the fitting

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

Pipe dimension in
inches

1/4" 15-20

3/8" 33-40

1/2" 50-60

5/8" 65-75

3/4" 95-105

Tightening torque in Nm

NOTICE!

A vacuum of at least 20 mbar must be pro­duced!

The time required to generate the vacuum is
dependent on the final pressure pipe volume of the
indoor units and the length of the refrigerant piping.
However
minutes. Once any foreign gases and humidity
have been completely extracted from the system,
the valves on the pressure gauge station are
closed and the valves on the outdoor unit are
opened as described in the "Commissioning" sec­tion.

, the process will take at least 60

30

6.4 Adding refrigerant

The units contain a basic quantity of refrigerant. In
addition, an additional amount of refrigerant must
be added for refrigerant piping lengths exceeding 5
metres per circuit. Refer to the following chart:

Up to and

incl. 5m

RVD 355 DC

RVD 525 DC

RVD 685 DC

RVD 1055 DC

CAUTION!

ear protective clothing when handling refrig-

W
erant.

DANGER!

Only refrigerant in a liquid state may be used to
fill the cooling cycle!

NOTICE!

Check the overheating to determine the refrig­erant fill quantity

NOTICE!

The escape of refrigerant contributes to climatic
change. In the event of escape, refrigerant with
a low greenhouse potential has a lesser impact
on global warming than those with a high
greenhouse potential.
This unit contains refrigerant
potential of 675. That means the escape of 1 kg
of this refrigerant has an effect on global
warming that is 675 times greater than 1 kg
CO2, based on 100 years. Do not conduct any

work on the refrigerant circuit or dismantle the
unit - always enlist the help of qualified experts.

0 g/m

.

From 5m to
max. length

15 g/m

30 g/m

with a greenhouse

7 Condensate drainage

connection and safe
drainage

Condensate drainage connection

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

n The condensate drainage line should have an

incline of min. 2%. This is the responsibility of
the customer
proof insulation.

n If the level of the condensate drainage line on

the unit is above that of the outlet, route the
pipe vertically upwards and then with an incline
to the drain.

n Route the unit's condensate drainage line

freely into the drain line. If the condensate runs
directly into a sewer pipe, fit a trap to prevent
any unpleasant odours.

n When operating the unit at outside tempera-

tures below 4 °C, ensure the condensate
drainage line is laid to protect it against frost. If
necessary, fit a pipe heater.

n Following installation, check that the conden-

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

Safe drainage in the event of leakages

Local regulations or environmental laws, for
example the German W
can require suitable precautions to protect against
uncontrolled drainage in case of leakage to provide
for safe disposal of escaping air conditioning fluid
or hazardous media.

NOTICE!

The max. pump pressure of the condensate
pump is 500/750 mmWS. Capacity reductions
can result from external influences such as air­side counter-pressure, soiling or wear. In order
to guarantee safe functional operation, we rec­ommend observing a maximum delivery height
of 450/700 mm!

. If necessary, fit vapour-diffusion-

ater Resource Act (WHG),

31

A

C

B

D

16-20 mm

min. 2%

max.

500 mmWS

REMKO RVD series

NOTICE!

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

Fig. 35: Condensate drainage connection - incor­rect!

A: Riser pipe too far away
B: Condensate drainage line too large/small
C: No incline
D: Cannot freely drain away

Fig. 36: Condensate drainage connection - correct!

32

8 Electrical wiring

8.1 General connection

and safety instructions

A protected power supply cable is to be connected
to the outdoor unit and a four-core control line with
a minimum cross-section of 1.5mm2. T
interference, only use shielded cable for this pur­pose and connect the shielding on both sides.

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.

o avoid EMC

8.2 Connecting the indoor unit

Make the connection as follows:

1. Open the air inlet grill.

2. Loosen the switch cabinet's cover (

3. Feed the voltage-free cable through the edge

protection rings on the control box and clamp
the cable in the strain relief.

4. Then connect the cable in accordance with
the wiring diagram (see chapter “Electrical
wiring diagram”).

5. Connect the electrical plugs on the cover to
the mating connectors on the cassette. It is
not possible to incorrectly connect these.

6. Re-install all disassembled parts.

Fig. 38).

e recommend using shielded wires for the

W
control lines.

e recommend that a mains/repair switch be

n W

installed near the outdoor unit.

n The terminal blocks for establishing the con-

nections are located on the side of the unit.
When the unit is installed, measurements can
be made from the front by removing the cover.

n If an optional condensate pump is used as an

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

n The control lines used should comprise

shielded wire, if laid in areas exposed to strong
magnetic fields.

n Details concerning the electrical protection of

the system are provided in the technical data.

Fig. 37: Switch cabinet access

33

1 2

7

6

3

4

5

REMKO RVD series

Fig. 38: Connecting the indoor unit

1: Plastic cover
2: Electrical drawing
3: Power supply connection terminals
4: Strain relief

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

ighten as required.

8.3 Outdoor unit connection

Proceed as follows to connect the line:

5: Communication line to outdoor unit
6: Plastic cover
7: Cable fastening possibility

1. Remove the unit cover

2. Remove the side panel at the connection.

3. Choose the cable cross-section in accord-

ance with the relevant specifications.

4. Feed both cables through the edge protec­tion rings on the fixed connection panel.

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

6. Fix the line in the strain relief and re­assemble the unit.

.

34

8.4 Electrical wiring diagram

230V/1~/50 Hz

S

PE

2(N) 1(L) W L N S

PE

2(N) 1(L) W

PE

1

A

2

B

Connection RVD 355 DC

Fig. 39: Electrical wiring diagram RVD 355 DC

A: Outdoor unit RVD 355 DC AT
B: Indoor unit RVD 355 DC IT

1 Power supply
2: Communication lines

35

A B

230V/1~/50 Hz

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

PE

S

PE

1

2

REMKO RVD series

Connection RVD 525 DC

Fig. 40: Electrical wiring diagram RVD 525 DC

A: Outdoor unit RVD 525 DC AT
B: Indoor unit RVD 525 DC IT

1 Power supply
2: Communication lines

36

Connection RVD 685 DC

230V/1~/50 Hz

L N S1

PE

S2

PE

1(L) 2(N) L N

PE

S1

S2

PE

1

A

2

B

2

Fig. 41: Electrical wiring diagram RVD 685 DC

A: Outdoor unit RVD 685 DC AT
B: Indoor unit RVD 685 DC IT

1 Power supply
2: Communication lines

37

400V/3~/50 Hz

L N S1

PE

S2

PE

L1 L2 L3 N

S1

S2

PE

(1)L

(2)N

PE

PE

1

A

2

B

2

REMKO RVD series

Connection RVD 1055 DC

Fig. 42: Electrical wiring diagram RVD 1055 DC

A: Outdoor unit RVD 1055 DC AT
B: Indoor unit RVD 1055 DC IT

1 Power supply
2: Communication lines

38

8.5 Electrical drawings

rot (braun)

blau (schwarz)

gelb

schwarz

weiss

rot
rot

braun

schwarz

CN16

CN14

XS9

XP9

CN13

10

T2

T1

CN6

4

CN8

M

CN10A

M

2

CN40

5

CN23

ON - OFF

CN33

ALARM

CN13

CN3

3

CN15

M

5

M

CN1

CN5

E Y X

CN7

T2B

P1

CN3

JR6

JR6

P3

P2

6

CN4

2

H

CH

P4

4

CN110

P5

rot

W

1(L) 2(N)

S

A

B

2

1

4

3

5

6

7

8

9

10

11

12

13

14

15

16

17

Indoor unit RVD 355 DC IT

Fig. 43: Electrical drawings RVD 355 DC IT

A: Control board
B: Display circuit board
1: DC fan motor (alternative)
2: Optional wired remote control
3: Connection of optional wired remote control
4: Potential-free alarm contact
5: External on/off
6: Connection possibility for fan motor provided by

the customer

7: Transformer

8: Temperature probe, suction pipe
9: Temperature probe, evaporator
10: Temperature probe, indoor air
11: Swing motor
12: Connecting line to the outdoor unit
13: MCC-1 controller connection
14: DC fan motor
15: Condensate pump
16: Condensate pump liquid level switch
17: AC fan motor

39

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

ON

1

ON

1

ON

1

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

REMKO RVD series

DIP switch setting possibilities

Address assignment MCC-1 (S2+S1)

Switch

S2 + S1

Address 0~15 16~31

Factory
setting

3

S2 + S1

Address 32~47 48~63

Factory
setting

Anti-cold air function (SW1)

Switch SW1

Factory

setting

Automatic restart after power failure (SW3)

Switch SW3 Value

Factory

setting

Automatic

restart in

ON

Setting

last oper-

ating

mode

3

No auto-

matic

restart

Mode priority (SW5)

Switch SW5

ON

Setting

Value Heating Heating Cooling Cooling

Factory
setting

3

Fan motor

stop temperature

24

15

8

After EEPROM

programming

Fan behaviour without demand (SW2)

Switch SW2 Value

Fan OFF

ON

Setting

Fan ON

3

Factory

setting

3

Temperature compensation (SW6)

Switch SW6

ON

Setting

Value 6 4 2

Factory
setting

3

40

Indoor units RVD 525-1055 DC

CN16

CN14

XS9

XS10

CN55

CN66

XS2

XP2

XS2

XP2

CN13

10

CN6

4

CN8

M

CN10(CN10A)

M

2

CN40

4

CN23

ON - OFF

CN33

ALARM

CN13

CN3

3

CN15

M

5

5

M

CN1

L

N

CN5

CN2

Q E P

CN7

P1

CN3

JR6

JR6

FAN1

CAP1

P3
CH

P2
H

4

6

CN4

S2

S1

N

P4

E Y X

CN1

SWING
MOTOR

XP9

XP10

T2

T1

T2B

5

SWING
MOTOR

schwarz

weiss

rot (braun)

blau (schwarz)

schwarz

braun

rot

rot

A

B

2

1

4

3

5

6

7

8

9

10

11

12

13

14

15

16

17

19

3

Fig. 44: Electrical drawings RVD 525-1055 DC

A: Control board
B: Display circuit board
1: DC fan motor (alternative)
2: Connection of optional wired remote control
3: Swing motors
4: Connection possibility for fan motor provided by

the customer
5: Condensate pump
6: Optional wired remote control
7: Temperature probe, suction pipe

8: Temperature probe, evaporator
9: Temperature probe, indoor air
10: Condensate pump liquid level switch
11: Power supply
12: Communication line to outdoor unit
13: MCC-1 controller connection possibility
14: DC fan motor
15: Transformer
16: External on/off
17: Potential-free alarm contact

41

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

0

8

4

1

2

3

5

6

7

C

9

A

B

D

E

F

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

ON

1

ON

1

ON

1

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

ON

1

2

REMKO RVD series

DIP switch setting possibilities

Address assignment MCC-1 (S2+S1)

Switch

S2 + S1

Address 0~15 16~31

Factory
setting

3

S2 + S1

Address 32~47 48~63

Factory
setting

Anti-cold air function (SW1)

Switch SW1

Fan motor

stop temperature

Factory

setting

Automatic restart after power failure (SW3)

Switch SW3 Value

Factory

setting

Automatic

restart in

ON

Setting

last oper-

ating

mode

3

No auto-

matic

restart

Main / slave setting (SW5)

Switch SW5

ON

Setting

Value MAIN

MAIN MAIN SLAVE

NO

SLA

VE

setting

Factory

3

24

15

8

After EEPROM

programming

Fan behaviour without demand (SW2)

Switch SW2 Value

Fan OFF

ON

Setting

Fan ON

3

Factory

setting

3

Temperature compensation (SW6)

Switch SW6

ON

Setting

Value 6 4 2

Factory
setting

3

Power setting (ENC1)

ENC1

Switch

no.

Power [W] Switch

no.

Power [W]

4 4000-5300 8 9100-10500

5 5400-7100 9 12000-14000

6 - A 14500-16000

7 7500-9000

42

Outdoor unit RVD 355 DC AT

A

2

1

4

3

5

6

7

8

9

10

111213

gelb o. schwarz

blau
braun

grün/gelb

blau o. schwarz
rot

grün/gelb grün/gelb

grün/gelb

grün/gelb

blau

rot

schwarz

CN 7

3

5/6

CN 31

5

3

CN 25

CN 15

CN 60

CN 17

2(N)

1(L)

CN 21

CN 1A

CN 50

3

U

V

W

S L N

W

Fig. 45: Electrical drawings RVD 355 DC AT

A: Control board
1: Compressor
2: To indoor unit
3: Power supply
4: 4-way reversing valve
5: Crankcase heating
6: Condensate tray heating

7: Condenser
8: AC fan motor
9: Electronic E-valve
10: DC fan motor
11: Air inlet temperature probe
12: Temperature probe for condenser outlet
13: Temperature probe for heat gas line

43

CN 7

3

5/6

CN 31

CN 15

CN 60

CN 17

L

S

N

CN 21

CN 1A

CN 50

3

U

V

W

5

3

CN 25

S(2)

N(B)

CN 2

CN 7

CN 1-3

CN 1-1

CN 1-2

VALVE-B

N

L

L(B)

S(1)

N(A)

L(A)

S(A)

S(B)

schwarz

blau

braun

grün/gelb

grün/gelb

grün/gelb

grün/gelb

blau schwarz

rot

A

B

2

1

4

3

5

6

7

8

9

10

111213

REMKO RVD series

Outdoor unit RVD 525 DC AT

Fig. 46: Electrical drawings RVD 525 DC AT

A: Control board
B: Auxiliary circuit board
1: Compressor
2: Communication line to indoor unit
3: Supply line to indoor unit
4: Power supply
5: 4-way reversing valve
6: Crankcase heating

7: Condensate tray heating
8: AC fan motor
9: Electronic E-valve
10: DC fan motor
11: Air inlet temperature probe
12: Temperature probe for condenser outlet
13: Temperature probe for heat gas line

44

Outdoor unit RVD 685 DC AT

CN1

U(R)

V(S)

W(C)

U

V

W

CN7

VALVE-A

CN17

T4
T3

P-1

CN18

COM(3)

RY2

ON(4)

CN29

CN21

CN14

CN12

4

CN4

CN5

~

~

5

L-OUT

CN6

CN5

HEAT1

CN1

CN2

4-WAY

CN9

CN8

HEAT2

CN2

CN3

P2

P1

CN14

3

3

6

L-IN

N-IN

CN28

CN3

CN4

XT2

S1

S2

XT1

L

N

L

N

2)(1

( )

grün/gelb

grün/gelb

rot

schwarz

rot

schwarz

gelb grau

rot

gelb

rot (braun)

blau

blau blau

A

B

2

1

4

3

5

6

78

9

10

1112

13

14

15

Fig. 47: Electrical drawings RVD 685 DC AT

A: Control board
B: Inverter board
1: Klixon
2: Low pressure switch
3: High pressure switch
4: Air inlet temperature probe
5: Temperature probe for condenser outlet
6: Temperature probe for heat gas line
7: Condensate tray heating

8: Crankcase heating
9: 4-way reversing valve
10: Communication line to indoor unit
11: Power supply
12: Supply line to indoor unit
13: DC fan motor
14: Compressor
15: Transformer

45

U

V

W

SV

L-PRO

T3

T4

H-PRO

TP

~

HEAT_D

HEAT_Y

PE3

CAP1

CN5

CN5 CN6 CN7

M

CN1

CN3

CN4

CN2

CN8CN6

PE1

6

5

N

L1

L2

L3

PE2

CN4 CN1

L1’

L2’ L3’

CN2

CN3

CN20 CN43

CN30

CN31

5

CN17

CN28

CN16

CN27

CN16

CN15

CN26
CN25

CN24
CN22

2

2

CN10

CN9

CN8

CN21

FM1

CN13

CN3

3

7

2

CN11

CN7

CN4 CN1

6

XT1

XT2

Y/G

2

L3L2L1 N

S1

S2

(

(

1

L

(

(

2

N

CN35

CN34

V

U

W

CH5

weiss

blau

rot

blau
rot
schwarz

blau
rot
schwarz

blau

blau

blau

blau

blau

weiss

blau

rot

weiss

blau

rot

grün/gelbgrün/gelb

schwarz

rot

weiss

blau

schwarz
blau
weiss

rot

blau

rot

grau

gelb

gelb

blau

blau

rot

orange

orange

orange

orange

schwarz
schwarz

A

B

2

1

4

3

5

6

7

8

9

10
11
12

13

14

15

1617

C

1

1

1

2

2

REMKO RVD series

Outdoor unit RVD 1055 DC AT

Fig. 48: Electrical drawings RVD 1055 DC AT

A: Control board
B: Inverter board
C: Control board DC fan motor
1: Transformer
2: Magnetic ring
3: Compressor
4: DC fan motor
5: AC fan motor
6: Crankcase heating
7: Condensate tray heating

8: 4-way reversing valve
9: Electronic E-valve
10: Temperature probe for heat gas line
11: Temperature probe for condenser outlet
12: Air inlet temperature probe
13: Low pressure switch
14: High pressure switch
15: Communication line to indoor unit
16: Supply line to indoor unit
17: Power supply

46

ON OFF

JR6

ON OFF

JR6

1

2

ON OFF

JR6

8.6 Connection of a superordinate

controller provided by the cus­tomer

Units of type RVD can be switched on and off by a
superordinate controller
potential-free contact for externally switching the
unit on and off, it is first necessary to remove the
jumper (JR6) at the indoor unit control board. The
contacts are then available.

Fig. 49: Removing the jumper

The building controller is now connected via the
two outer contacts of the plug labelled ON - OFF
the connection between the two contacts is open,
the system is in stand-by mode. The “Operation
LED” and the “Timer LED” blink alternately. The
unit can no longer be switched on using the remote
control.

. In order to utilise the

. If

If the connection between the two contacts is
closed, the unit is reactivated and switches to the
last operating mode used.

Fig. 51: Closed contact

2: Operation

Fig. 50: Open contact

1: Stand-By

47

REMKO RVD series

9 Before commissioning

After leak testing has been successfully com­pleted, connect the vacuum pump via the pressure
gauge station to the valve connections on the out­door unit (see chapter "Leak testing") and create a
vacuum.

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

n Check all refrigerant piping and valves for leak-

tightness using leak detection spray or soapy
water

.

n Check the refrigerant piping and insulation for

damage.

n Check the electrical connection between the

indoor unit and the outdoor unit for correct
polarity.

n Check that all fastenings, mountings, etc. are

firm and at the correct level.

10 Commissioning

NOTICE!

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

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

NOTICE!

Check that the shut-of
are tight after carrying out any work on the
cooling cycle. Use appropriate sealant products
as necessary.

Functional checks and test run

Check the following points:

f valves and valve caps

.

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

unit, and warm air output by the outdoor unit.

n Function test of the indoor unit and all program

sequences.

n Check of the surface temperature of the suc-

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

n Record the measured temperatures in the

commissioning report.

48

Function test of the cooling and heating modes

1. Remove the protective caps from the valves.

2. Start the commissioning procedure by briefly

opening the shut-of
unit until the pressure gauge indicates a
pressure of approx. 2 bar.

3. Check all connections for leaks with leak

detection spray and suitable leak detectors.

4. If no leaks are found, fully open the shut-of

valves by turning them anti-clockwise using a
spanner. If leaks are found, remedy the faulty
connection. It is imperative that the vacuum
creation and drying steps are repeated.

5. Activate the main circuit breaker or fuse.

6. Use the remote control to switch on the unit

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

7. Check the overheating, outside, inside, outlet

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

8. Check the unit control system using the func-

tions described in the chapter "Operation".
T

imer, temperature setting, fan speeds and
switching to ventilation or dehumidification
mode.

9. Check the correct function of the condensate
drainage line by pouring distilled water into
the condensate tray
recommended for pouring the water into the
condensate tray.

10. Switch the indoor unit to heating mode.

11. During the test run, check the functionality of

all of the previously described safety devices.

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

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

14. Re-install all disassembled parts.

f valves on the outdoor

f

. A bottle with a spout is

11 Shutdown

Temporary shutdown

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

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

2. Shut down the system using the remote con­trol.

3. Switch of
unit.

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

Permanent shutdown

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

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

f the electrical power supply to the

.

49

REMKO RVD series

12 Troubleshooting, customer service and fault analysis

12.1 Troubleshooting and customer service

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

Operational malfunctions

Malfunction Possible causes Checks Remedial measures

, if malfunctions should occur, please check the functions as

The unit does not start or
switches itself of

f

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

Damaged power supply Does all other elec.

Wait time after switching
on is too short

Temperature outside
operating range

Electrical surges caused
by thunderstorms

Malfunction of the
external condensate
pump

High-pressure / low-pres­sure switches have trig­gered

Does all other electrical
equipment function cor­rectly?

equipment function cor­rectly?

Have approx. 5 minutes
elapsed since the
restart?

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

Have there been light­ning strikes in the area
recently?

Has the pump shut down
due to a malfunction?

Check refrigerant pres­sure and look for leaks if
necessary

Check the voltage and if
necessary
come back on

Repair by specialist firm

Schedule longer wait
times

Observe temperature
ranges of indoor unit and
outdoor unit

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

Check and if necessary
clean the pump

Rectify leakage and re­start

, wait for it to

The unit does not
respond to the remote
control

Transmission distance
too far / receiver af
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

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

Batteries in remote con­trol are flat

fected

Does the indoor unit
beep when pressing a
key?

manual mode?

Does it function correctly
in the shade?

Does it function after
removing potential
sources of interference?

Does the “Transmitting”
symbol appear on the
display?

Have new batteries been
inserted? Is the display
incomplete?

Reduce the distance to
less than 6 m or change
position

Replace the remote con­trol

Place the receiver and/or
transmitter unit in the
shade

Signal is not transmitted
when interference
sources are operational

Release the key / only
press one key

Insert new batteries

50

Malfunction Possible causes Checks Remedial measures

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

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

Windows and doors
open. Heating / cooling
load has increased

Neither cooling nor
heating mode has been
set

Fins on outdoor unit
blocked by foreign
objects

Leaking cooling cycle Are there signs of frost

Outdoor unit iced up Check outdoor unit. Has

Drainage pipe on collec­tion container clogged /
damaged

Have the filters been
cleaned?

Have structural / usage
modifications been
made?

Does the cooling symbol
appear on the display?

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

on the exchanger fins of
the indoor unit?

the cassette probe on
the outdoor unit been
correctly positioned?

Can the condensate
drain of
obstruction?

f without any

Clean the filters

Close windows and
doors / install additional
units

Correct the settings for
the unit

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

Repair by specialist

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

Clean the drainage pipe
and collection container

Condensate discharge
on unit

NOTE

Faulty external conden­sate pump or float

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

Condensate does not
drain of

Float is stuck or jammed
due to excessive dirt

f

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

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

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

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

Call out a specialist to
replace the pump

Route the condensate
drainage line with an
incline and clean it.

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

Should be cleaned by
specialist firm

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

51

. Switch it back on again at least 12 hours before the next time that the unit

2

1

REMKO RVD series

Malfunction indicated by flashing code RVD 355-525 DC

Number

Error description

of flashes

per

second)

EEPROM error, indoor unit 1 OFF E0

Communication error between indoor unit and outdoor unit 2 OFF E1

Evaporator fan motor speed control not OK 4 OFF E3

Room air temperature probe faulty 5 OFF E4

Evaporator temperature probe faulty 6 OFF E5

No cooling capacity after 30 minutes 7 OFF EC

Condensate pump liquid level switch triggered 8 OFF EE

Safety shut-down due to increased power consumption 1 ON F0

LED timer

1)

2)

code

Error

Outdoor unit air inlet temperature probe faulty 2 ON F1

Condenser outlet temperature probe faulty 3 ON F2

Temperature probe for heat gas line faulty 4 ON F3

EEPROM error, outdoor unit 5 ON F4

Condenser fan speed control not OK 6 ON F5

Suction pipe temperature probe in AT faulty 7 ON F6

Fin motor defective or not connected F7

Inverter error 1 FLASHES P0

Over/undervoltage error 2 FLASHES P1

Safety shut-down compressor excess temperature 3 FLASHES P2

Safety shut-down due to low outside temperature 4 FLASHES P3

Compressor control faulty 5 FLASHES P4

Mode conflict 6 FLASHES P5

Low pressure alarm 7 FLASHES P6

1)

LED [1] in the bottom figure

2)

LED [2] in the bottom figure

Fig. 52: Malfunction indicated by flashing code RVD 355-525 DC

52

Malfunction indicated by flashing code RVD 685-1055 DC

2

1

3

FUNC

Number

Error description

of flashes

per

second)

LED timer

1)

2)

code

Error

EEPROM error, indoor unit 1 OFF E0

Communication error between indoor unit and outdoor unit 2 OFF E1

Evaporator fan motor speed control not OK 4 OFF E3

Room air temperature probe faulty 5 OFF E4

Evaporator temperature probe faulty 6 OFF E5

No cooling capacity after 30 minutes 7 OFF EC

Condensate pump liquid level switch triggered 8 OFF EE

Safety shut-down due to increased power consumption 1 ON F0

3)

Outdoor unit air inlet temperature probe faulty 2 ON F1

Condenser outlet temperature probe faulty 3 ON F2

Temperature probe for heat gas line faulty 4 ON F3

EEPROM error, outdoor unit 5 ON F4

Condenser fan speed control not OK 6 ON F5

Temperature probe suction pipe in outdoor unit faulty 7 ON F6

Fin motor defective or not connected F7

Inverter error 1 FLASHES P0

Over/undervoltage error 2 FLASHES P1

Safety shut-down compressor excess temperature 3 FLASHES P2

Safety shut-down due to low outside temperature 4 FLASHES P3

Compressor control faulty 5 FLASHES P4

Mode conflict 6 FLASHES P5

Low pressure alarm 7 FLASHES P6

1)

LED [1] in the bottom figure

2)

LED [2] in the bottom figure

3)

LED [3] in the bottom figure

Fig. 53: Malfunction indicated by flashing code RVD 685-1055 DC

53

YES

REMKO RVD series

12.2 Indoor unit fault analysis

Error code: E0 / F4

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

(EEPROM)

Cause:

Switch off voltage, switch on again 2 minutes

later

Replace the circuit boards of the outdoor unit

and indoor unit in turn, in order to locate the

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

. Is the error still present?

defective EEPROM

54

Error code: E1

YES

NO

YES YES

YES

NO

NO

YES

NO

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

Cause:

Switch off voltage, switch on again 2 minutes

later

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

terminals of the outdoor unit. Is the measured

Check electrical connections in the outdoor

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

. Is the error still present?

value positive?

unit. Are they OK?

Is the transformer OK?

Check electrical connections in the indoor unit.

Are they OK?

Replace the control boards of the indoor unit. Is

the fault remedied?

Replace the control boards of the outdoor unit

Replace the transformer

Replace the control boards of the outdoor unit.

Is the fault remedied?

Replace the control boards of the indoor unit

55

NO

YES

NO

YES

NO

YES

NO

YES

NO

REMKO RVD series

Error code: E3 / F5

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

and the display shows error code E3 or E5

Cause:

Switch off voltage, switch on again 2

minutes later

De-energise the unit and attempt to

turn the fan wheel by hand. Does it

Check the electrical connections.

Are these correctly implemented?

Measure the voltage at the corre-

sponding connector plug on the con-

trol board (see section

dure’ on page 57). Does the

measured voltage lie within the toler-

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

. Is the error still

present?

rotate freely?

Ä

‘Proce-

ance range?

The unit operates normally.

Check the motor and the fan

wheel bearing, and replace the

defective parts.

Correctly establish the electrical

connection

Replace the control board.

Replace the fan motor. Is the fault

remedied?

56

Procedure

1 3 4 5 6

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

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

. If these differ, there is a

Fig. 54: Motor measurements

Terminal Colour Voltage

1 Red 280V~380 V

2 --- ---

3 Black 0 V

4 White 17-17.5V

5 Yellow 0~5.6V

6 Blue 17-17.5V

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

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

57

YES

YES

NO YES

YES

NO

REMKO RVD series

Error code: EC

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

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

erant is low
error code "EC".

. The measurement is performed a total of 3 times before the display shows the

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

Start

Start

Cause:

Switch off voltage, switch on again 2 minutes

later. Is the error still present?

Check whether the indoor unit blows out cold

Check the cooling circuit for leaks. Leaks

Check the cooling circuit for any blockages. Are

the shut-of

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

.

air

found?

f valves on the outdoor unit open?

Check the position and function of the evapo-

rator probe T2. Is it correctly seated and with

the correct resistance?

Exchange the control boards of the indoor unit.

Remedy leaks and put the unit back into opera-

tion.

58

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

NO

YES

NO

YES

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

shows the error code of the corresponding probe.

Cause:

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

Check the probe for correct resistance,

depending on the temperature (see resistance

Replace the corresponding control board.

n Electrical connection faulty
n T

emperature probe defective

n Control board defective

and correctly connected?

table)

Establish a proper connection.

Replace the probe.

Fig. 55: Check the probes

59

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

REMKO RVD series

Error code: F0

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

Cause:

Check the supply voltage. Is this correct?

Check the cooling circuit for any blockages. Is

Check the winding resistances of the com-

Check the electrical connections. Are these cor-

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

the cooling circuit OK?

pressor

. Are they OK?

rectly implemented?

Switch the unit off and ensure correct supply

voltage.

Remove the blockage (shut-off valve open?)

Replace the compressor.

Replace or correct the electrical connections.

Does the transformer operate fault-free?

Replace the outdoor unit.

Replace the transformer or control boards of

the outdoor unit.

60

Error code: P0

YES

NO

YES

NO

NO

YES

NO

YES

NO

YES

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

“P0” and the unit switches of

f

Cause:

Check the external enabling contact CN23 and

the jumper JR6. Are both contacts open? (See

Ä

Chapter 8.6 ‘Connection of a superordinate

controller provided by the customer ’

Check the connecting cables between the con-

trol board and compressor? Are they faulty?

Check the inverter controller (see section

Ä

‘Check the inverter controller’ on page 62).

n External enabling contact open
n Electrical connection faulty
n Faulty control board
n Condenser fan motor defective or blocked
n Compressor defective

on page 47)

Fault eliminated?

Close the external enabling contact CN23 or

the jumper JR6.

Establish a correct connection between the

control board and compressor

Replace the control board.

.

Check the condenser fan motor. Is it working

correctly?

Check the winding resistances of the com-

pressor

Exchange the control boards of the outdoor

. Are they OK?

unit.

See troubleshooting fault F5

Replace the compressor.

61

NO

YES

NO

YES

NO

YES

NO

YES

REMKO RVD series

Check the inverter controller

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

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

Voltmeter Normal resistance

(+) Red (-) Black

U

V

W

(+) Red

Error code: P1

Reason: Overvoltage or undervoltage protection has tripped

Cause:

Check the power supply. Is the supply voltage

Check the electrical connections. Are they OK?

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

correct?

N

Switch the unit off and have the power supply

¥

(multiple MW)

checked/corrected.

Replace the electrical connections.

Switch the power on and put the unit into

standby mode. Measure the voltage on the

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

approx. 310 V

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

should now be between 220-400V. Is the cor-

Check the transformer. Is a defect present?

, 340 V or 380 V DC. Now start

rect voltage applied?

Replace the transformer.

Replace the control board.

Replace the control board.

62

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

YES

NO

YES

NO

YES

NO

YES

YES

NO

YES

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

error message “P2”

Cause:

Check the air flow

volumes of the

indoor unit and out-

door unit. Are they

blocked or dirty?

Switch off the power

supply to the unit

and switch it on

again after 10 mins.

Does the unit start

up?

Check the tempera-

ture of the com-

pressor

heated up?

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

. Has it

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

Check the thermal contact. Is it correctly connected?

Measure the resistance of the thermal contact.

Is it 0?

Connect it correctly.

Check the cooling

circuit. Is it OK?

Replace the thermal

contact.

Replace the control board of the outdoor unit.

63

YES

NO

NO

YES

NO

YES

NO

YES

1

REMKO RVD series

Error code: P4

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

cation problem between board and compressor

, the compressor speed is not OK)

Cause:

Check the electrical connection between the

control board and compressor

Check the inverter controller. Is this functional?

Check the condenser fan motor. Is it OK?

Check the winding resistances of the com-

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

. Are these cor-

rectly implemented?

pressor

. Are they OK?

Establish a proper connection.

Replace the control board.

Follow the instructions for troubleshooting fault

F5

Replace the compressor

Replace the control boards of the outdoor unit.

Check individual components

Check the temperature probes

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

1: Multimeter

Error code: dF

Reason: The unit is in heating mode and the outdoor unit is being defrosted. After the defrost phase,

the indoor unit automatically switches back to the last operating mode.

64

12.3 Resistances of the temperature probes

Probe T1, T2, T3 and T4

Temp.

(°C)

-20 115.27 12 18.72

-19 108.15 13 17.80

-18 101.52 14 16.93

-17 96.34 15 16.12

-16 89.59 16 15.34

-15 84.22 17 14.62

-14 79.31 18 13.92

-13 74.54 19 13.26

-12 70.17 20 12.64

-11 66.09 21 12.06

-10 62.28 22 11.50

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

Temp.

(°C)

44 4.39 79 1.21

45 4.21 80 1.17

46 4.05 81 1.14

47 3.89 82 1.10

48 3.73 83 1.06

49 3.59 84 1.03

50 3.45 85 1.00

51 3.32 86 0.97

52 3.19 87 0.94

53 3.07 88 0.91

54 2.96 89 0.88

55 2.84 90 0.85

56 2.74 91 0.83

57 2.64 92 0.80

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

-9 58.71 23 10.97

-8 56.37 24 10.47

-7 52.24 25 10.00

-6 49.32 26 9.55

-5 46.57 27 9.12

-4 44.00 28 8.72

-3 41.59 29 8.34

-2 39.82 30 7.97

-1 37.20 31 7.62

0 35.20 32 7.29

1 33.33 33 6.98

2 31.56 34 6.68

3 29.91 35 6.40

4 28.35 36 6.13

5 26.88 37 5.87

6 25.50 38 5.63

58 2.54 93 0.78

59 2.45 94 0.75

60 2.36 95 0.73

61 2.27 96 0.71

62 2.19 97 0.69

63 2.11 98 0.67

64 2.04 99 0.65

65 1.97 100 0.63

66 1.90 101 0.61

67 1.83 102 0.59

68 1.77 103 0.58

69 1.71 104 0.56

70 1.65 105 0.54

71 1.59 106 0.53

72 1.54 107 0.51

73 1.48 108 0.50

7 24.19 39 5.40

8 22.57 40 5.18

9 21.81 41 4.96

10 20.72 42 4.76

11 19.69 43 4.57

65

74 1.43 109 0.48

75 1.39 110 0.47

76 1.34 111 0.46

77 1.29 112 0.45

78 1.25 113 0.43

REMKO RVD series

Temp.

(°C)

114 0.42 127 0.30

115 0.41 128 0.29

116 0.40 129 0.28

117 0.39 130 0.28

118 0.38 131 0.27

119 0.37 132 0.26

120 0.36 133 0.26

121 0.35 134 0.25

122 0.34 135 0.25

123 0.33 136 0.24

124 0.32 137 0.23

125 0.32 138 0.23

126 0.31 139 0.22

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

Temp.

(°C)

16 82.54 51 18.96

17 78.79 52 18.26

18 75.24 53 17.58

19 71.86 54 16.94

20 68.66 55 16.32

21 65.62 56 15.73

22 62.73 57 15.16

23 59.98 58 14.62

24 57.37 59 14.09

25 54.89 60 13.59

26 52.53 61 13.11

27 50.28 62 12.65

28 48.14 63 12.21

29 46.11 64 11.79

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

Probe T5

Temp.

(°C)

-20 542.7 -2 200.7

-19 511.9 -1 190.5

-18 483.0 0 180.9

-17 455.9 1 171.9

-16 430.5 2 163.3

-15 406.7 3 155.2

-14 384.3 4 147.6

-13 363.3 5 140.4

-12 343.6 6 133.5

-11 325.1 7 127.1

-10 307.7 8 121.0

-9 291.3 9 115.2

-8 275.9 10 109.8

-7 261.4 11 104.6

-6 247.8 12 99.69

-5 234.9 13 95.05

-4 222.8 14 90.66

-3 211.4 15 86.49

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

30 44.17 65 11.38

31 42.33 66 10.99

32 40.57 67 10.61

33 38.89 68 10.25

34 37.30 69 9.90

35 35.78 70 9.57

36 34.32 71 9.25

37 32.94 72 8.94

38 31.62 73 8.64

39 30.36 74 8.36

40 29.15 75 8.08

41 28.00 76 7.82

42 26.90 77 7.57

43 25.86 78 7.32

44 24.85 79 7.09

45 23.89 80 6.86

46 22.89 81 6.64

47 22.10 82 6.43

48 21.26 83 6.23

49 20.46 84 6.03

50 19.69 85 5.84

66

Temp.

(°C)

86 5.66 109 2.86

87 5.49 110 2.78

88 5.32 111 2.70

89 5.16 112 2.63

90 5.00 113 2.56

91 4.85 114 2.49

92 4.70 115 2.42

93 4.56 116 2.36

94 4.43 117 2.29

95 4.29 118 2.23

96 4.17 119 2.17

97 4.05 120 2.12

98 3.93 121 2.06

99 3.81 122 2.01

Resistance

(kW)

Temp.

(°C)

Resistance

(kW)

100 3.70 123 1.96

101 3.60 124 1.91

102 3.49 125 1.86

103 3.39 126 1.81

104 3.30 127 1.76

105 3.20 128 1.72

106 3.11 129 1.67

107 3.03 130 1.63

108 2.94

67

REMKO RVD series

13 Care and maintenance

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

DANGER!

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

Contact Remko GmbH & Co. KG to sign up for
a maintenance contract

Care

n Ensure that the indoor unit and outdoor unit are

free of dirt, mould and other deposits.

Type of task

Checks / maintenance / inspection

n Only clean the units with 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 indoor unit and outdoor

unit prior to long shutdown periods.

Maintenance

n It is recommended that you take out a mainte-

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

n For systems which operate year-round (e.g. in

server rooms), the maintenance intervals must
be reduced accordingly

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

Commis-

sioning

Monthly Half-

.

yearly

.

Yearly

General

Check voltage and current

Check function of compressor / fans

Dirt on condenser / evaporator

Check the refrigerant volume

Check condensate drainage

Check insulation

Check moving parts

Sealing test for cooling cycle

1)

see note below

Cleaning the cover on the indoor unit

1. Disconnect the power supply to the unit.

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. 56).

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

4. Switch the power supply back on.

l

l

l

l l

l

l

l

l

l

Air filter for indoor unit

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

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.

.

l

l

l

l

l

l

l

1)

l

68

Cleaning the filter

1. Disconnect the power supply to the unit.

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. 56).

3. T

4. Clean the filter with a commercially available

5. Dirt can also be removed by carefully

6. If water is used, let the filter dry out properly

7. Carefully insert the filter

8. Close the cover as described above but in

9. Switch the power supply back on.

10. Switch the unit back on.

ilt the filter and lift it out (Fig. 56).

vacuum cleaner (
dirty side so it is facing upwards.

cleaning with lukewarm water and mild
cleaning agents. The dirty side should be
face down (

in the air before fitting it back into the unit.

locates correctly.

reverse order

Fig. 57). To do so, turn the

Fig. 58).

. Ensure that it

.

Fig. 57: Cleaning with a vacuum cleaner

Cleaning the condensate pump

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

The pump is more or less maintenance-free. The
condensate drainage lines 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 in the separate
operating instructions.

Fig. 56: Pull out the filter

Fig. 58: Cleaning with lukewarm water

69

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

REMKO RVD series

14 Exploded view and spare parts lists

14.1 Exploded view - Indoor unit RVD 355-525 DC

Fig. 59: Exploded view of the unit RVD 355-525 DC IT

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

70

14.2 Spare parts list - Indoor unit RVD 355-525 DC

IMPOR

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

No. Designation

1 Infrared remote control

2 Condensate pump liquid level switch

3 Condensate pump

4 Condensate pump mounting plate

5 Condensate hose

6 Condensate connection

7 Unit trim

8 Display board

9 Condensate tray

10 Temperature probe, evaporator

11 Evaporator

12 Evaporator housing

TANT!

13 Unit housing

14 Terminal block cover

15 Control board

16 Temperature probe, indoor air

17 Air inlet nozzle

18 Fan wheel

19 Fan motor

20 Fan motor mounting plate

71

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

REMKO RVD series

14.3 Exploded view - Indoor unit RVD 685-1055 DC

Fig. 60: Exploded view of the unit RVD 685-1055 DC IT

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

72

14.4 Spare parts list - Indoor unit RVD 685-1055 DC

IMPOR

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

No. Designation

1 Infrared remote control

2 Condensate pump liquid level switch

3 Condensate pump

4 Condensate pump mounting plate

5 Condensate hose

6 Condensate connection

7 Unit trim

8 Display board

9 Air filter

10 Liquid level switch mounting plate

11 Condensate tray

12 Evaporator

TANT!

13 Casing part, left

14 Unit housing

15 Casing part, front

16 Temperature probe, indoor air

17 Condensate tray sealing cap

18 Temperature probe, evaporator

19 Casing part, rear

20 Casing part, right

21 Control board

22 Transformer

23 Air inlet nozzle

24 Fan wheel

25 Fan motor

26 Housing floor

73

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

REMKO RVD series

15 Exploded view - Outdoor unit RVD 355 DC

Fig. 61: Exploded view of the unit RVD 355 DC AT

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

74

16 Spare parts list - Outdoor unit RVD 355 DC

IMPOR

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

No. Designation

1 Cover panel

2 Protection grid, front wall

3 Front panel

4 Fan blade

5 Fan motor

6 Fan motor mounting plate

7 Corner panel, left

8 Condenser

9 Air inlet temperature probe

10 Electronic injection valve

11 Shut-off valve, injection pipe

12 4-way reversing valve

TANT!

13 Shut-off valve, suction pipe

14 Partitioning panel

15 Temperature probe for heat gas line

16 Compressor

17 Floor panel

18 Side panel, right

19 Refrigerant connections cover

20 Terminal block cover

21 Control board

22 Temperature probe for condenser outlet

23 Condensate tray heating

24 Crankcase heating

25 Mounting plate for refrigerant connections

75

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

REMKO RVD series

17 Exploded view - Outdoor unit RVD 525 DC

Fig. 62: Exploded view of the unit RVD 525 DC AT

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

76

18 Spare parts list - Outdoor unit RVD 525 DC

IMPOR

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

No. Designation

1 Cover panel

2 Protection grid, front wall

3 Front panel

4 Fan blade

5 Fan motor

6 Fan motor mounting plate

7 Corner panel, left

8 Condenser

9 Air inlet temperature probe

10 Electronic injection valve

11 Shut-off valve, injection pipe

12 4-way reversing valve

TANT!

13 Shut-off valve, suction pipe

14 Partitioning panel

15 Temperature probe for heat gas line

16 Compressor

17 Floor panel

18 Side panel, right

19 Refrigerant connections cover

20 Control board

21 Auxiliary circuit board

22 Temperature probe for condenser outlet

23 Condensate tray heating

24 Crankcase heating

77

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

REMKO RVD series

19 Exploded view - Outdoor unit RVD 685 DC

Fig. 63: Exploded view of the unit RVD 685 DC AT

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

78

20 Spare parts list - Outdoor unit RVD 685 DC

IMPOR

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

No. Designation

1 Cover panel

2 Protection grid, front wall

3 Front panel

4 Fan blade

5 Fan motor

6 Fan motor mounting plate

7 Corner panel, left

8 Condenser

9 Air inlet temperature probe

10 Electronic injection valve

11 Shut-off valve, injection pipe

12 4-way reversing valve

TANT!

13 Shut-off valve, suction pipe

14 Partitioning panel

15 Temperature probe for heat gas line

16 Compressor

17 Floor panel

18 Side panel, right

19 Refrigerant connections cover

20 Terminal block cover

21 Control board

22 Inverter board

23 Cooling fins

24 Temperature probe for condenser outlet

25 Mounting plate for refrigerant connections

26 Transformer

27 Condensate tray heating

28 Crankcase heating

79

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

REMKO RVD series

21 Exploded view - Outdoor unit RVD 1055 DC

Fig. 64: Exploded view of the unit RVD 1055 DC AT

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

80

22 Spare parts list - Outdoor unit RVD 1055 DC

IMPOR

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

No. Designation

1 Cover panel

2 Protection grid, front wall

3 Front panel

4 Fan blade

5 Fan motor

6 Fan motor mounting plate

7 Side panel, left

8 Recessed grip side panel, left

9 Condenser

10 Temperature probe for condenser outlet

11 Temperature probe for heat gas line

12 Air inlet temperature probe

TANT!

13 4-way reversing valve

14 Shut-off valve, suction pipe

15 Inverter board

16 Control board

17 Liquid separator

18 Transformer

19 Side panel, right

20 Terminal block cover

21 Shut-off valve cover

22 Recessed grip front panel, right

23 Front panel, right

24 Low pressure switch

25 Electronic injection valve

26 Shut-off valve, injection pipe

27 High pressure switch

28 Compressor

29 Partitioning panel

30 Floor panel

81

REMKO RVD series

No. Designation

31 Shut-off valve mounting plate

32 Condensate tray heating

33 Crankcase heating

82

23 Index

C

Care and maintenance ................... 68

Cleaning

Air filter for indoor unit ................. 68

Condensate pump .................... 69

Cover on the indoor unit ................ 68

Condensate drainage connection ........... 31

Customer service ....................... 50

D

Display on indoor unit .................... 16

Disposal of equipment .....................8

E

Electrical drawings ........39, 41,

Electrical wiring ......................... 33

Electrical wiring diagram ......... 35, 36, 37, 38

Environmental protection ...................8

Exploded view of the unit ... 70, 72, 74, 76, 78, 80

43, 44, 45, 46

F

Flashing code, fault display ............ 52, 53

Fresh air connection ..................... 27

Fresh air inlet .......................... 28

Function test of the cooling and heating modes 49

Functional checks ....................... 48

I

Infrared remote control ................... 15

Installation location, selection .............. 24

Installation materials ..................... 23

Intended use ............................ 7

K

Keys on the remote control ................ 17

M

Maintenance ........................... 68

Malfunction indicated by flashing code .... 52, 53

Malfunctions

Checks .............................50

Possible causes ...................... 50

Remedial measures ................... 50

Manual mode .......................... 15

Minimum clearances ..................... 25

R

Remote control

Keys ...............................17

Resistances

T

emperature probes ................... 65

S

Safe drainage in the event of leakages ....... 31

Safety

Dangers of failure to observe the safety

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

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

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

Instructions for the operator .............. 6

Note for inspection work .................6

Note for installation work ................ 6

Note for maintenance work .............. 6

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

Safety-conscious working ................6

Unauthorised modification ...............7

Unauthorised replacement part manufacture . 7

Selection of installation location ............ 24

Setting of

Address assignment MCC-1 ..........40, 42

Anti-cold air function ................40, 42

Automatic restart after power failure ....40, 42

DIP switch ....................... 40, 42

Fan behaviour without demand ....... 40, 42

Main / slave ......................... 42

Mode priority ........................ 40

Power ..............................42

Temperature compensation .......... 40, 42

Shutdown

Permanent .......................... 49

Temporary .......................... 49

Spare parts list ...........71, 73, 75, 77, 79, 81

Superordinate controller, connection ......... 47

T

Temperature probes

Resistances ......................... 65

Test run ............................... 48

Troubleshooting and customer service ....... 50

U

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

O

Oil return measures ......................26

Ordering spare parts ...... 71, 73, 75, 77, 79, 81

83

W

Wall opening ........................... 23

Warranty ............................... 7

Wired remote control .....................16

REMKO QUALITY WITH SYSTEMS

Air-Conditioning | Heating | New Energies

Telephone [phone]
Telefax [phone]

E-mail [e-mail]
URL www.remko.de

REMKO GmbH & Co. KG
Klima- und Wärmetechnik

Im Seelenkamp 12
32791 Lage

Hotline within Germany

[phone]

Hotline International

[phone]

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