Assembly and operating instructions
REMKO RVT...DC
RVT 263 DC, RVT 353 DC, RVT 523 DC, RVT 683 DC
Inverter wall-mounted room air conditioner with split design
0096-2014-11 Edition 1, en_GB
Read the instructions prior to performing any task!
Read these operating instructions carefully before commissioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or misprints!
Installation and operating instructions (translation of the original)
Table of contents
1 Safety and usage instructions............................................................................................................. 5
1.1 General safety notes....................................................................................................................... 5
1.2 Identification of notes...................................................................................................................... 5
1.3 Personnel qualifications.................................................................................................................. 5
1.4 Dangers of failure to observe the safety notes................................................................................ 5
1.5 Safety-conscious working............................................................................................................... 5
1.6 Safety notes for the operator........................................................................................................... 6
1.7 Safety notes for installation, maintenance and inspection.............................................................. 6
1.8 Unauthorised modification and changes......................................................................................... 6
1.9 Intended use................................................................................................................................... 6
1.10 Warranty........................................................................................................................................ 6
1.11 Transport and packaging.............................................................................................................. 7
1.12 Environmental protection and recycling........................................................................................ 7
2 Technical data....................................................................................................................................... 8
2.1 Unit data.......................................................................................................................................... 8
2.2 Unit dimensions ............................................................................................................................ 10
2.3 Sound pressure level.................................................................................................................... 11
2.4 Characteristic curves heating and cooling.................................................................................... 12
3 Design and function............................................................................................................................ 16
3.1 Characteristics of REMKO inverter air conditioner with split design............................................. 16
3.2 Unit description............................................................................................................................. 18
4 Operation............................................................................................................................................. 19
5
Installation instructions for qualified personnel.............................................................................. 27
5.1 Important notes prior to installation............................................................................................... 27
5.2 Wall openings................................................................................................................................ 27
5.3 Installation materials..................................................................................................................... 27
5.4 Installation indoor unit................................................................................................................... 27
5.5 Installation, mounting outdoor unit................................................................................................ 28
5.6 Minimum clearances..................................................................................................................... 30
5.7 Oil return measures....................................................................................................................... 31
5.8 Connection variants for the indoor unit......................................................................................... 31
5.9 Wall bracket for the indoor units.................................................................................................... 32
6 Installation........................................................................................................................................... 33
6.1 Installation of the indoor unit......................................................................................................... 33
6.2 Connecting the refrigerant piping.................................................................................................. 33
6.3 Additional notes on connecting the refrigerant piping................................................................... 35
6.4 Leak testing................................................................................................................................... 36
6.5 Adding refrigerant.......................................................................................................................... 36
7 Condensate connection and safe drainage...................................................................................... 37
8 Electrical wiring................................................................................................................................... 39
8.1 General Information...................................................................................................................... 39
8.2 Connecting the indoor unit............................................................................................................ 39
8.3 Connecting the outdoor unit.......................................................................................................... 40
8.4 Electrical wiring diagram............................................................................................................... 40
8.5 Electrical drawings........................................................................................................................ 42
9 Before commissioning....................................................................................................................... 47
3
REMKO RVT...DC
10 Commissioning................................................................................................................................... 47
11
Troubleshooting, fault analysis and customer service................................................................... 49
11.1 Troubleshooting and customer service....................................................................................... 49
11.2 Diagnosis and solution indoor unit.............................................................................................. 51
12 Care and maintenance........................................................................................................................ 59
13 Shutdown............................................................................................................................................. 61
14 Exploded view and spare parts lists................................................................................................. 62
14.1 Exploded view - Indoor unit RVT 263 DC-683 DC IT.................................................................. 62
14.2 Spare parts list - Indoor unit RVT 263 DC-683 DC IT................................................................. 63
14.3 Exploded view - Outdoor unit RVT 263 DC-523 DC AT.............................................................. 64
14.4 Spare parts list - Outdoor unit RVT 263 DC-523 DC AT............................................................. 65
14.5 Exploded view - Outdoor unit RVT 683 DC AT........................................................................... 66
14.6 Spare parts list - Outdoor unit RVT 683 DC AT.......................................................................... 67
15 Index..................................................................................................................................................... 68
4
1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before commissioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.
Keep this operating manual and the refrigerant
data sheet near to the units.
Identification of notes
1.2
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by symbols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or material and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recommendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, operation, maintenance, inspection and installation must
be able to demonstrate that they hold a qualification which proves their ability to undertake the
work.
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
Dangers of failure to observe
1.4
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
In particular, failure to observe the safety notes
may pose the following risks:
n The failure of important unit functions.
n The failure of prescribed methods of mainte-
nance and repair.
n Danger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
5
REMKO RVT...DC
1.6 Safety notes for the operator
The operational safety of the units and components is only assured providing they are used as
intended and in a fully assembled state.
n The units and components may only be set up,
installed and maintained by qualified personnel.
n Protective covers (grille) over moving parts
must not be removed from units that are in
operation.
n Do not operate units or components with
obvious defects or signs of damage.
n Contact with certain unit parts or components
may lead to burns or injury.
n The units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
n Spaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
n All housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
n The units must be inspected by a service tech-
nician at least once annually. Visual inspections and cleaning may be performed by the
operator when the units are disconnected from
the mains.
1.7 Safety notes for installation, maintenance and inspection
n Appropriate hazard prevention measures must
be taken to prevent risks to people when performing installation, repair, maintenance or
cleaning work on the units.
n The setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
n Local regulations and laws such as Water
Ecology Act must be observed.
n The power supply should be adapted to the
requirements of the units.
n Units may only be mounted at the points pro-
vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.
n Mobile units must be set up securely on suit-
able surfaces and in an upright position. Stationary units must be permanently installed for
operation.
n The units and components should not be oper-
ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.
n The units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
n Safety devices must not be altered or
bypassed.
Unauthorised modification
1.8
and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
Intended use
1.9
Depending on the model, the units and the additional fittings with which they are equipped are only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed space.
Any different or additional use is a non-intended
use. The manufacturer/supplier assumes no liability for damages arising from a non-intended use.
The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
The threshold values specified in the technical
data must not be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative complete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "General business and delivery conditions". Furthermore, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
6
1.11 Transport and packaging
The devices are supplied in a sturdy shipping container. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
1.12 Environmental protection and recycling
Disposal of packaging
All products are packed for transport in environmentally friendly materials. Make a valuable contribution to reducing waste and sustaining raw materials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufacture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not disposed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recycling specialists or at collection points.
7
REMKO RVT...DC
2 Technical data
2.1 Unit data
Series RVT 263 DC RVT 353 DC RVT 523 DC RVT 683 DC
Operating mode
Nominal cooling output
Energy efficiency ratio SEER
1)
1)
Rated elec. pwr cons., cooling
Rated elec. curr. cons., cooling
Power consumpt., annual, QCE
Energy efficiency ratio, cooling
Nominal heat capacity
Energy efficiency ratio SCOP
2)
4)
Rated elec. pwr cons., heating
Rated elec. curr. cons., heating
Power consumpt., annual, QHE
Energy efficiency ratio, heating
kW
1)
kW
1)
3)
kWh 145 206 259 453
1)
kW
2)
kW
2)
3)
kWh 1,050 1,295 1,867 2,395
2)
Inverter wall-mounted room air conditioner combination for
cooling and heating
2.92
(1.10-3.70)
3.81
(1.10-4.20)
5.20
(1.60- 6.30)
6.80
(3.20-7.60)
7.0 6.3 6.9 5.8
0.72 1.51 1.67 2.45
A
3.14 6.59 7.27 10.60
A++ A++ A++ A+
3.11
(1.00-4.10)
3.71
(1.00-4.60)
5.28
(1.60-6.30)
7.30
(2.90-8.40)
4.0 4.0 3.9 3.8
0.74 0.90 1.25 2.03
A
3.24 3.94 5.43 8.80
A+ A+ A A
Max. power consumption kW 2.10 2.10 2.85 3.60
Max. current consumption A 9.50 9.50 13.00 16.50
EDP no. 1623140 1623145 1623150 1623155
Data specific to indoor unit
Application area (room volume),
approx.
RVT 263 DCITRVT 353 DCITRVT 523 DCITRVT 683 DC IT
m
3
80 110 160 230
Adjustment range, room temp. °C +17 to +30 +8 with "FP" function
Operating range °C +17 to +32
Air flow volume per level m³/h 420/570/650 440/580/750 750/900/1150 1050/1280/1450
5)
Sound pres. level p. speed sett.
Sound pressure level, Silent/
Turbo mode
5)
dB (A) 28/36/40 32/37/42 33/38/46 42/45/50
dB (A) 22/42 23/44 25/48 27/50
Sound power level max. dB(A) 52 56 56 63
Enclosure class IP X 0
Condensate drainage connection mm 18
Dimensions: H/W/D mm 280/750/198 280/835/198 315/990/218 340/1186/258
8
Data specific to indoor unit
RVT 263 DCITRVT 353 DCITRVT 523 DCITRVT 683 DC IT
Weight kg 7 9 12 16
EDP no. 1623142 1623147 1623152 1623157
Data specific to outdoor unit
Power supply
V/Ph/
Hz
Operating range, cooling °C
Operating range, heating °C
RVT 263 DCATRVT 353 DCATRVT 523 DCATRVT 683 DC
AT
230 / 1~ / 50
+5 to +50
+5 to +34
7)
7)
Air flow rate, max. m³/h 1,800 1,800 2,200 2,700
Enclosure class IP 24
Sound power level max. dB (A) 59 63 61 67
Sound pressure level
Refrigerant
6)
5)
dB (A) 48 52 50 56
R 410A
Refrigerant, basic capacity kg 1.1 1.1 1.25 2.25
Max. operating pressure kPa 4200 / 1500
Refrigerant, addit. quantity >5m g/m 20 40
Refrigerant piping, max. length m 25 25 30 45
Refrigerant piping, max. height m 10 10 15 20
Refrigerant connection
Liquid line
Refrigerant connection
Suction pipe
Inche
s
(mm)
Inche
s
(mm)
1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)
3/8 (9.52) 3/8 (9.52) 1/2 (12.70) 5/8 (15.90)
Dimensions: H/W/D mm 590/760/285 700/845/320
Weight kg 35 35 36 50
EDP no. 1623141 1623146 1623151 1623156
1)
Air inlet temp. TK 27°C / FK 19°C, outside temp. TK 35°C, FK 24°C, max. air flow vol., 5m pipe length
2)
Air inlet temp. TK 20°C, outside temperature TK 7°C, FK 6°C, max. air flow volume, 5m 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
5)
At distance of 1m in the open air; specified values are maximum values
6)
Contains greenhouse gas per the Kyoto protocol, GWP 1975 (for further information, see chapter "Adding refrigerant")
7)
This can be extended to -15°C with the appropriate accessory kit
9
A
B
C
D
E
A
B
C
REMKO RVT...DC
2.2 Unit dimensions
Outdoor units
Fig. 1: Outdoor unit dimensions RVT 263 DC-683 DC AT
Dimensions (mm) A B C D E
RVT 263 DC-523 DC 590 760 285 530 290
RVT 683 DC 700 845 320 560 335
Indoor units
Fig. 2: Indoor unit dimensions RVT 263 DC-683 DC IT
Dimensions (mm) A B C
RVT 263 DC 280 750 198
RVT 353 DC 280 835 198
RVT 523 DC 315 990 218
RVT 683 DC 340 1,186 258
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
10
2.3 Sound pressure level
1m1m
5m
10m
1m
5m
10m
Fig. 3: Distance-dependent sound pressure level for the outdoor unit in relation to installation type, in accordance with the drawing
Distance-dependent sound pressure level *)
Installation type, in
accordance with the
drawing
1m
[dB(A)]5m[dB(A)]
Unit type
Sound power max.
[dB(A)]
In free field 51,0 37,0 31,0 27,5
RVT 263 DC 59
In front of a wall 54,0 40,0 34,0 30,5
In free field 55,0 41,0 35,0 31,5
RVT 353 DC 63
In front of a wall 58,0 44,0 38,0 34,5
In free field 53,0 39,0 33,0 29,5
RVT 523 DC 61
In front of a wall 56,0 42,0 36,0 32,5
In free field 59,0 45,0 39,0 35,5
RVT 683 DC 67
In front of a wall 62,0 48,0 42,0 38,5
*) All information without guarantee. Exact sound values must be determined by an expert!
10m
[dB(A)]
15m
[dB(A)]
11
0,00
1,00
2,00
3,00
4,00
5,00
12 7 2 0 -7 -10 -15
2
1
3
A
[°C]
0,00
1,00
2,00
3,00
4,00
5,00
6,00
21 25 30 35 40 45 50
2
1
3
A
[°C]
REMKO RVT...DC
2.4 Characteristic curves heating and cooling
Heating capacity RVT 263 DC
Fig. 4: Characteristic curves heating RVT 263 DC (specification at indoor temperature 20 °C)
A: Outdoor temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 3,33 2,93 2,79 2,65 2,36 2,22 1,91
Power consumption in kW 0,76 0,75 1,26 1,19 1,11 1,11 1,05
COP 4,37 3,91 2,21 2,23 2,12 2,00 1,82
Cooling capacity RVT 263 DC
Fig. 5: Characteristic curves cooling RVT 263 DC (specification at indoor temperature 27/19 °C)
A: Outdoor temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 21 25 30 35 40 45 50
Cooling capacity in kW 2,80 2,99 3,01 2,90 2,49 2,36 2,30
Power consumption in kW 0,57 0,61 0,67 0,73 0,74 0,75 0,78
EER 4,93 4,87 4,51 3,97 3,36 3,13 2,94
12
Heating capacity RVT 353 DC
0,00
1,00
2,00
3,00
4,00
5,00
12 7 2 0 -7 -10 -15
2
1
3
A
[°C]
0,00
1,00
2,00
3,00
4,00
5,00
21 25 30 35 40 45 50
2
1
3
A
[°C]
Fig. 6: Characteristic curves heating RVT 353 DC (specification at indoor temperature 20 °C)
A: Outdoor temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 4,21 3,70 3,53 3,35 2,98 2,80 2,42
Power consumption in kW 0,93 0,91 1,53 1,44 1,35 1,35 1,27
COP 4,55 4,07 2,31 2,33 2,21 2,08 1,90
Cooling capacity RVT 353 DC
Fig. 7: Characteristic curves cooling RVT 353 DC (specification at indoor temperature 27/19 °C)
A: Outdoor temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 21 25 30 35 40 45 50
Cooling capacity in kW 3,57 3,81 3,84 3,70 3,18 3,01 2,93
Power consumption in kW 0,92 0,99 1,08 1,18 1,20 1,22 1,26
EER 3,89 3,84 3,56 3,14 2,65 2,47 2,32
13
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
12 7 2 0 -7 -10 -15
2
1
3
A
[°C]
0,00
1,00
2,00
3,00
4,00
5,00
6,00
21 25 30 35 40 45 50
2
1
3
A
[°C]
REMKO RVT...DC
Heating capacity RVT 523 DC
Fig. 8: Characteristic curves heating RVT 523 DC (specification at indoor temperature 20 °C)
A: Outdoor temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 5,84 5,13 4,89 4,64 4,13 3,88 3,35
Power consumption in kW 1,30 1,28 2,15 2,02 1,89 1,89 1,79
COP 4,49 4,01 2,27 2,29 2,18 2,05 1,87
Cooling capacity RVT 523 DC
Fig. 9: Characteristic curves cooling RVT 523 DC (specification at indoor temperature 27/19 °C)
A: Outdoor temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 21 25 30 35 40 45 50
Cooling capacity in kW 4,92 5,25 5,30 5,10 4,38 4,15 4,04
Power consumption in kW 1,21 1,30 1,42 1,55 1,57 1,60 1,66
EER 4,08 4,03 3,73 3,29 2,78 2,59 2,43
14
Heating capacity RVT 683 DC
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
9,00
12 7 2 0 -7 -10 -15
2
1
3
A
[°C]
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
21 25 30 35 40 45 50
2
1
3
A
[°C]
Fig. 10: Characteristic curves heating RVT 683 DC (specification at indoor temperature 20 °C)
A: Outdoor temperature
1: COP
2: Heating capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 12 7 2 0 -7 -10 -15
Heating capacity in kW 8,34 7,33 6,99 6,63 5,90 5,55 4,79
Power consumption in kW 2,06 2,03 3,41 3,21 3,00 3,00 2,84
COP 4,04 3,61 2,05 2,07 1,96 1,85 1,69
Cooling capacity RVT 683 DC
Fig. 11: Characteristic curves cooling RVT 683 DC (specification at indoor temperature 27/19 °C)
A: Outdoor temperature
1: EER
2: Cooling capacity in kW
3: Power consumption in kW
Outdoor temperature in °C 21 25 30 35 40 45 50
Cooling capacity in kW 6,79 7,24 7,30 7,03 6,03 5,72 5,57
Power consumption in kW 1,71 1,84 2,00 2,19 2,22 2,26 2,35
EER 3,98 3,93 3,64 3,21 2,72 2,53 2,37
15
1/3
When it is switched on, the inverter only requires
one-third of the time of conventional systems
Time
Minimal temperature fluctuations
mean energy savings
Conventional
Inverter
Temperature
REMKO RVT...DC
3 Design and function
3.1 Characteristics of REMKO inverter air conditioner with split design
REMKO inverter technology
The air conditioner's condenser is equipped with a
requirement-dependent speed control system. The
power control on conventional air conditioners provides only two states, either ON (full output) or
OFF (no output). The air conditioner turns on
below a specified temperature and turns off when
this temperature is reached. This kind of heat regulation is very inefficient. Heat regulation in the
Remko inverter air conditioner is modulated to the
actual need. The electronics system has an integrated frequency-converter which serves to modify
the condenser speed and the speed of the blower
as required. The condenser works at a higher
speed when under full load than under partial load.
The lower speeds ensure a longer operational lifetime for the components, improved coefficient of
performance and lower noise. Lower speeds also
result in lower energy consumption (electricity) and
longer service life. I.e.: inverter air conditioner will
run practically throughout the cooling season. In
all, the highest efficiency possible.
Thanks to innovative inverter technology, this
air conditioner will almost always operate by
adapting its cooling capacity to the actual
requirements of the cooling season, and will in
fact turn itself off when heat is removed. The
same applies in the opposite direction with
heating.
Fig. 12: Modern inverter technology
16
10 12 14 16 18 20 22 24 26 28 30
uncomfortably
humid
comfortable
still comfortable
uncomfortably
dry
Relative humidity in %
Room air temperature in °C
Cooling mode
Because of circuit reversal, heating is also possible. In heating mode, the components of the
refrigeration circuit are used to produce warm air
thus in the building can be heated.
The comfort zone in the illustration below shows
which values for temperature and humidity are
considered comfortable for people. This range
should ideally be met when heating or air-conditioning buildings.
Fig. 13: Comfort zone
17
21
4
3
TC
M
2
1
4
3
5
6
7
8
1
7
8
9
B
A
4
3
5
6
2
3
REMKO RVT...DC
3.2 Unit description
The room air conditioners RVT 263 DC-683 DC
have a REMKO RVT...AT outdoor unit as well as
an RVT...IT indoor unit.
In cooling mode, the outdoor unit serves to output
the heat extracted by the indoor unit from the room
being cooled. In heating mode, the heat taken up
by the outdoor unit can be discharged by the
indoor unit into the room to be heated. In both
operating modes, the output produced by the compressor precisely matches requirements, and
thereby regulates the nominal temperature with
minimal temperature deviations. This "inverter
technology" results in energy savings over conventional split systems and also reduces noise emissions to a particularly low level. The outdoor unit
can be installed in an outdoor area or, providing
that certain requirements are met, an indoor area.
The indoor unit is designed to be mounted high up
on the wall, in indoor areas. It is operated by an
infrared remote control.
The outdoor unit consists of a cooling cycle with
compressor, fin condenser, condenser fan,
reversing valve and throttle element. The outdoor
unit is controlled by the controller in the indoor unit.
The indoor unit consists of a fin evaporator, evaporator fan, controller and condensate tray.
Floor brackets, wall brackets, refrigerant piping and
condensate pumps are available as accessories.
Fig. 15: Cooling cycle diagram for outdoor unit
1: Condenser
2: Condenser fan
3: Reversing valve
4: Compressor
5: Electronic injection valve
6: Pressure gauge connection
7: Suction pipe connection valve
8: Injection pipe connection valve
Fig. 14: Cooling cycle diagram for indoor unit
1: Evaporator
2: Evaporator fan
3: Suction pipe connection
4: Injection pipe connection
Fig. 16: System layout
A: Outdoor area
B: Indoor area
1: Indoor unit
2: Outdoor unit
3: Condensate drainage line
4: Condenser fan
5: Power supply
6: Shut-off valve
7: Suction pipe
8: Injection pipe
9: Control line
Refrigerant piping is used to connect the indoor
unit to the outdoor unit.
18
4 Operation
max. 6 m
2
1
4
3
5
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.
Alarms are indicated by a code (see chapter
Troubleshooting and customer service).
Manual mode
The indoor units can be put into operation manually. After the air inlet screen has been opened,
the inner recessed key can be pressed and automatic mode can be activated. In manual mode, the
following settings apply:
Cooling mode: last setting
Fan speed: AUTO
Heating mode: last setting
Fan: AUTO
Press a key on the infrared remote control to interrupt manual 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.
NOTICE!
Immediately replace flat batteries with a new
set, otherwise there is a risk of leakage. It is
recommended that the batteries are removed if
the equipment is shut down for longer periods.
Help save on energy consumption in stand-by
mode! If the device, system or component is
not in use, we recommend disconnecting the
power supply. Components with a safety function is excluded from our recommendation!
Display on indoor unit
The display illuminates according to the settings.
Fig. 18: Display on indoor unit
1: Set target value/fault indicator
2: Ionic function activated/deactivated
3: De-frosting function activated or pre-heating (in
heating mode) activated
4: Operating lamp
5: Timer activated/deactivated
Fig. 17: Maximum distance
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Keys on the remote control
"FAN" key
Press this key to set the desired fan speed. 4
speeds are available:
Automatic, low, medium and high fan stage.
"SLEEP/FRESH" key
"SLEEP" key
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.
"FRESH" key
Activates the unit's ion generator. This releases
negatively charged particles into the airflow, which
neutralises the influences of smoke and dust,
among other things.
Fig. 19: Keys on the remote control
"ON/OFF" key
Press this key to put the unit into operation and
take it out of operation.
"MODE" key
Press this key to select the operating mode. The
indoor unit has 5 modes:
1. Automatic mode
In this mode, the unit works in cooling or in heating
mode.
2. Cooling mode
In this mode, the warm air in the room is cooled
down to the preset temperature.
3. Dehumidification mode
In this mode, the room is dehumidified, and in
doing so the room temperature is significantly lowered. It is not possible to influence the temperature
and humidity in this mode.
4. Heating mode
In this mode, the warm air in the room is heated up
to the desired temperature.
5. Recirculation mode
"TURBO" key
Press this key to directly activate the oscillating
function of the fins for better air distribution in the
room.
The "TURBO" function allows the preset temperature to be reached in the shortest possible time.
Pressing this key in "Cooling mode" causes the
unit to blow a blast of cooling air into the room at a
very high fan speed.
"SELF CLEAN" key
This key activates the self-clean function.
" ▲ " and " ▼ " keys
The " ▲ " key increases the desired temperature to
30°C in 1°C increments.
The " ▼ " key decreases the desired temperature
to 17°C in 1°C increments .
"LED" key
This key switches the indoor unit display on and
off.
In this mode, the air in the room is recirculated.
Temperature selection is not possible.
20
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"FOLLOW ME" key
Indicators on the LCD
Pressing this key initiates the "Follow Me" function.
The display on the remote control shows the actual
temperature of the current location of the remote
control. The remote control transmits this signal to
the air conditioning unit at intervals of 3 minutes,
until the "Follow Me" key is pressed again. The air
conditioning unit automatically cancels the "Follow
Me" function if it has not received the signal for a
period of 7 minutes.
"SILENT MODE" / "FP" key
This key activates/deactivates Silent mode.
The fan speed is reduced to a minimum.
In this mode, the air conditioning unit operates
Fig. 20: Indicators on the LCD
silently.
1: Mode display - shows the current operating
The "FP" (Freeze Protection) key activates a frost
protection function with which the setpoint in heat
mode is set to ca. 8°C.
modes including Auto ( ), Cooling( ), Dehu-
midifying ( ), Heating ( ), Fan ( ) and back
to Auto ( ) mode.
2: Signal transmission symbol. This symbol
appears when signals are being transmitted
"TIMER ON" key
This key initiates the automatic switch-on time for
the unit. Each time the key is pressed, the automatic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-on time to 0.0.
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: TIMER OFF symbol. This symbol appears
when TIMER OFF is switched on.
6: Sleep symbol. This symbol appears when the
"Sleep" function is activated. Pressing this key
again causes the indicator to go out.
"TIMER OFF" key
This key initiates the automatic switch-off time for
the unit. Each time the key is pressed, the automatic time setting increases in increments of 30
minutes. Once the time setting shows 10.0, the
automatic time setting increases in increments of
60 minutes each time the key is pressed. In order
to cancel the automatic time setting, simply set the
automatic switch-off time to 0.0.
7: Temperature/Timer symbol. Shows the temper-
ature setting (-17°C~30°C). If "FAN" mode is
selected, the temperature setting is not dis-
played. In Timer mode, the ON and OFF set-
tings appear for the TIMER.
8: FOLLOW ME symbol. This symbol appears
when the "Follow me" function is activated.
9: 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"
"Fin setting horizontal" key
when either "Auto" or "Dehumidification" mode
is activated.
This key sets the position of the horizontal exhaust
fins. Each time the key is pressed, the fins change
position by 6 degrees. Pressing the key for longer
than 2 seconds activates the swing function.
"Fin setting vertical" key
This key sets the position of the vertical exhaust
fins. Each time the key is pressed, the fins change
position by 6 degrees. Pressing the key for longer
than 2 seconds activates the swing function.
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.
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Key functions
A symbol is shown on the display to indicate that
the settings are being transferred.
"Auto" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
The operating mode indicator on the display of the
indoor unit begins to flash.
1. Press the "MODE"key to select "Auto" mode.
2. Press the "UP/DOWN"key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.
3. Press the "ON/OFF"key to switch the air
conditioning unit on.
"Cooling", "Heating" and "Recirculation" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
1. Press the "MODE"key to select from operating modes "Cooling", "Heating" or "Recirculation".
2. Press the "UP/DOWN"key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.
3. Press the "FAN"key to select from the four
fan speeds (Auto, slow, medium and fast).
4. Press the "ON/OFF"key to switch the air
conditioning unit on.
Fig. 21: "Auto" mode
– In "Auto" mode, the air conditioning unit is
able to logically select between the
"Cooling" , "Recirculation" and "Heating"
modes, specifically by detecting the difference between the actual room temperature
and the temperature set on the remote
control.
– In "Auto" mode, it is not possible to set the
fan speed. This is already controlled automatically.
– If "Auto" mode is not comfortable enough
for you, you can also select the desired
mode manually.
Fig. 22: "Cooling", "Heating" and "Recirculation"
mode
– In "Fan" mode, the temperature setting is
not shown on the remote control, and it is
not possible to check the room temperature. In this case steps 1, 3 and 4 can be
carried out.
"Dehumidification" mode
Make sure that the indoor unit is connected to the
power supply, and is switched on.
The operating mode indicator on the display of the
indoor unit begins to flash.
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2
2
1
1. Press the "MODE"key to select "Dehumidifying" mode.
2. Press the "UP/DOWN"key to set the desired
temperature. The temperature can be set
between 17 and 30°C, in increments of 1°C.
3. Press the "ON/OFF"key to switch the air
conditioning unit on.
1. Press the "TIMER ON" key. The remote control shows "TIMER ON", the last "Auto on"
time setting and the symbol "H" appears on
the display. The unit is now ready to reset the
"Auto on" time and to start "TIMER ON"
mode.
2. Press the "TIMER ON" key again to set the
desired "Auto on" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.
3. Once these settings have been made, there
is a one second delay before the remote control transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.
Fig. 23: "Dehumidification" mode
In "Dehumidification" mode, it is not possible to
set the fan speed. This is already controlled
automatically.
"Timer" mode
Press the "TIMER ON" key to set the "Auto on"
time and the "TIMER OFF" key to set the "Auto off"
time for the unit.
Setting the "Auto on" time
Fig. 24: "Timer" mode
23
Start
Off
6 hours laterSet time
REMKO RVT...DC
Setting the "Auto off" time
1. Press the "TIMER OFF" key. The remote
control shows "TIMER OFF", the last "Auto
off" time setting and the symbol "H" appears
on the display. The unit is now ready to reset
the "Auto off" time and to stop "TIMER OFF"
mode.
2. Press the "TIMER OFF" key again to set the
desired "Auto off" time. Each time the key is
pressed, the time is increased by half an
hour between 0 and 10 hours, and by an
hour between 10 and 24 hours.
3. Once these settings have been made, there
is a one second delay before the remote control transmits the signal to the indoor unit.
Then, after approx. two seconds, the "H"
symbol disappears from the LCD display,
and the set temperature appears again on
the display.
– When Timer mode is selected, the remote
control automatically transfers the timer
signal to the indoor unit for the specified
period of time. Therefore, you should hold
the remote control in a location where it
can transfer the signal to the indoor unit
without interference.
– The effective operation for the time settings
by the remote control for the timer function
is restricted to the following settings:
0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,
5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23 and 24.
Example TIMER function settings
"TIMER ON" (Auto on mode)
The "TIMER ON" function is useful if you want the
unit to switch on automatically before you come
home. The air conditioning unit will commence
operation automatically at the set time.
Example:
You want the air conditioning unit to switch on six
hours from the time it was programmed.
1. Press the "TIMER ON" key. The last operating time setting for the timer, and the "H"
symbols, appear on the display.
2. Press the "TIMER ON" key until the desired
start time is shown in the "TIMER ON" area
on the remote control.
3. Wait for 3 seconds and the temperature
appears again in this area of the digital display. The "TIMER ON" indicator stays lit, and
this function is activated.
Fig. 25: "TIMER ON" example
"TIMER OFF" (Auto off mode)
The "TIMER OFF" function is useful if you want the
unit to switch off automatically once you have gone
to bed. The air conditioning unit will cease operation automatically at the set time.
Example:
You want the air conditioning unit to switch off ten
hours from the time it was programmed.
1. Press the "TIMER OFF" key. The last operating time setting for the timer, and the "H"
symbols, appear on the display.
2. Press the "TIMER OFF" key until "10H" is
shown in the "TIMER OFF" area on the
remote control.
3. Wait for 3 seconds and the temperature
appears again in this area of the digital display. The "TIMER OFF" indicator stays lit,
and this function is activated.
24
Stop
On
10 hours laterSet time
On
Set time
Stop
Start
2 hours later
after setting
10 hours later
after setting
"TIMER ON ð "TIMER OFF"
Off
Set time
Stop
Start
2 hours later
after setting
5 hours later
after setting
(Off ð Start ð Stop)
This function is useful if you want the unit to switch
on automatically before you wake up, then to
switch off again once you have left the house.
Fig. 26: "TIMER OFF" example
Combined TIMER (setting "TIMER ON" and
"TIMER OFF" at the same time)
"TIMER OFF ð "TIMER ON"
(On ð Stop ð Start)
This function is useful if you want the unit to switch
off automatically once you have gone to bed, then
to switch back on automatically when you get up or
come home.
Example:
You want the air conditioning unit to switch off in
two hours from the time it was programmed, and
switch back on ten hours later.
1. Press the "TIMER OFF" key.
2. Press the "TIMER OFF" key again until the
desired stop time is shown in the "TIMER
OFF" area on the remote control.
3. Press the "TIMER ON" key.
4. Press the "TIMER ON" key again until "10H"
is shown in the "TIMER ON" area on the
remote control.
5. Wait for 3 seconds and the temperature
appears again in this area of the digital display. The "TIMER ON" and "TIMER OFF"
indicators stay lit, and this function is activated.
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. 28: "TIMER ON" / "TIMER OFF" example
The timer settings ("TIMER ON" or "TIMER
OFF") which is made immediately after the set
time will be activated first.
SLEEP function
Fig. 27: "TIMER OFF" / "TIMER ON" example
In this function, the unit automatically increases (in
cooling mode) or reduces (in heat mode) the temperature in the first two hours by 1°C an hour. For
the next five hours, the temperature is them kept
constant. Then this function is stopped.
The function maintains the most comfortable temperature while saving energy.
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Fig. 29: "Sleep" function
The "SLEEP" function is only available in the
"Cooling", "Heating" and "Auto" modes.
Adjusting the airflow direction
Use the "SWING" and "DIRECT" keys to achieve
the desired airflow direction.
1. Press the "DIRECT" key to determine the
horizontal position of the exhaust fins. Each
time the "DIRECT" key is pressed, the fins
change position by 6 degrees.
2. Pressing the "SWING" key causes the
exhaust fins to move up and down automatically.
If the fins are moved to a position which would
influence the cooling or heating effect of the air
conditioning unit, they change their direction of
movement automatically.
26
5 Installation instructions for qualified personnel
21 5
3 4
5.1 Important notes prior to installation
n Transport the unit in its original packaging as
close as possible to the installation location.
You avoid transport damage by doing so.
n Check the contents of the packaging for com-
pleteness and check the unit for visible transport damage. Report any damage immediately
to your contractual partner and the shipping
company.
n Lift the unit on the corners and not on the
refrigerant or condensate drainage connections.
n The refrigerant piping (liquid and suction pipe),
valves and connections must be insulated to
make them vapour diffusion proof. If necessary
also insulate the condensate drainage line.
n Select an installation location which allows air
to freely flow through the air inlet and outlet
(see section "Minimum clearances")
n Do not install the unit in the immediate vicinity
of devices which generate intensive thermal
radiation. Installation in the vicinity of thermal
radiation reduces the unit output.
n Only open the shut-off valves on the refrigerant
piping after installation is complete.
n Seal off open refrigerant piping with suitable
caps or adhesive strips to prevent the infiltration of moisture and never kink or compress
the refrigerant piping.
n Avoid unnecessary bends. This minimises the
pressure loss in the refrigerant piping and
ensures that the compressor oil can flow back
without obstruction.
n Make special preparations regarding the oil
return if the outdoor unit is located above the
indoor unit (see section "Oil return measures").
n Add refrigerant if the basic length of the refrig-
erant piping exceeds 5 metres. For the quantity
of additional refrigerant, refer to chapter
"Adding refrigerant".
n Perform all electrical wiring in accordance with
applicable DIN and VDE standards.
n Ensure the electrical cables are properly con-
nected to the terminals, otherwise there is a
risk of fire.
n Only use the fasteners contained in the scope
of delivery with the units.
n Use four supports and the associated hooks to
attach the ceiling cassette (only applies to
ceiling cassettes).
n Use the insulated condensate hose in the
scope of delivery as a junction piece to the
continuing condensate drain. Secure the condensate drain with the supplied clamps.
5.2 Wall openings
n A wall opening of at least 70mm diameter and
10mm incline from the inside to the outside
must be created.
n To prevent damage to the lines, the interior of
the wall opening should be padded or, for
example, lined with PVC pipe (see figure).
n After installation has been completed, use a
suitable sealing compound to close off the wall
opening, taking account of fire protection regulations (responsibility of customer). Do not use
cement or lime containing substances!
Fig. 30: Wall opening
1: Liquid line
2: Control line
3: Condensate drainage line
4: Suction pipe
5: PVC pipe
5.3 Installation materials
The indoor unit is attached to the wall by a wall
bracket and 4 screws (to be provided by the customer).
The outdoor unit is attached by 4 screws and a
wall bracket to the wall or fixed by a floor bracket to
the ground.
Installation indoor unit
5.4
The indoor unit is designed for horizontal wall
installation above doors. However, it can also be
used in the upper wall area (min. 1.75m above the
floor).
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5.5 Installation, mounting outdoor unit
Outdoor unit installation location
n The device may be attached only to a load-
bearing structure or wall. Ensure that the outdoor unit is installed only vertically. The installation site should be well ventilated.
n To minimise noise, install floor consoles with
vibration dampers and a considerable distance
from acoustically-reflective walls to minimise
noise.
n The minimum clearances specified on the next
page should be maintained when carrying out
the installation. These minimum distances
serve to ensure unrestricted air intake and
exhaust. Additionally, there must be adequate
space available for installation, maintenance
and repair.
n If the outdoor unit is erected in an area of
strong winds, then the device must be protected against them (Fig. 31). The snow line is
to be observed during installation (
n The outdoor unit must always be installed on
vibration dampers. Vibration dampers prevent
the transmission of vibrations through the floor
or walls.
n A heated, condensate tra ensures that conden-
sation from the pan can drain off. Ensure that
the condensate is prevented from freezing so
that it can drain off (gravel, drainage). The
Water Ecology Act is to be observed.
Fig. 32).
n During installation, add about 20 cm to the
expected snow depth to guarantee unimpeded
intake and exhaust of outdoor air year round
(Fig. 32).
n The installation site of the outdoor unit should
be agreed together with the operator primarily
so that operating noise is minimised and not in
terms of “short routes”. Thanks to the splitdesign technology there are a great deal of different installation options with almost identical
efficiency available.
Fig. 31: Protection from wind
1: Wind
NOTICE!
The site for the outdoor unit must be selected
so that machinery noise that occurs disturbs
neither the residents nor the facility operator.
Observe the TA-noise specifications as well as
the table containing the drawings relating to
sound pressure levels..
Fig. 32: Protection from snow
1: Snow
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Assessment level in accordance
Point of emissions
days in dB(A) nights in dB(A)
Industrial areas 70 70
Commercial areas 65 50
Core areas, village areas and mixed zones 60 45
General residential areas and small housing estates 55 40
Exclusively residential areas 50 35
Spa areas, hospitals and mental institutions 45 35
Isolated noise peaks of short duration may not exceed 30 dB(A) during the day and 20 dB(A) at night.
with TA noise
Definition of the Danger Area
WARNING!
Access to the unit is only permitted for authorised and trained persons. If unauthorised persons can approach the danger areas, these
areas must be identified with corresponding
signs, barriers, etc.
n The external danger area surrounds the equip-
ment up to a distance of 2 m, measured in all
directions from the unit housing.
n The external danger area on-site can differ as
a result of the setup. The specialist company
performing the installation work bears the
responsibility for this.
n The internal danger area is located inside the
machine and can only be reached with the use
of an appropriate tool. Access is prohibited for
unauthorised persons!
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5.6 Minimum clearances
Observe the minimum clearances to allow access for maintenance and repair work and facilitate optimum air
distribution.
Fig. 33: Minimum clearances of the indoor unit and outdoor unit
AT: Outdoor unit
IT: Indoor unit
1: Air inlet
2: Air outlet
Indoor units Outdoor units
Dimen-
sions
(mm)
A 120 150 150 150
B 1,500 700 700 700
C 120 400 400 400
D - 150 150 150
E 120 200 200 400
F 200 - - -
RVT 263 DC-683 DC
IT
RVT 263 DC AT RVT 353 DC AT
RVT 523 DC-683 DC
AT
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5.7 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, an oil pump bend is installed for
every 5.0 metres of height difference.
Fig. 34: Oil return measures
A: Outdoor unit
B: Indoor unit
1: One oil pump bend in suction pipe to outdoor
2: Radius: 50 mm
3: Max. 10 m
5.8 Connection variants for the indoor unit
unit every 5.0 metres of height difference
The following connection variants can be used for the refrigerant, condensate and control lines.
Fig. 35: Connection variants
A: Outlet on the wall, right
B: Outlet through the wall, right
C: Outlet through the wall, left
D: Outlet on the wall, left
1: Unit-side refrigerant piping (bendable)
2: Unit-side condensate drainage hose
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B
C
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5.9 Wall bracket for the indoor units
Fig. 36: Mounting points for wall bracket RVT 263 DC IT and RVT 353 DC IT
(Front view, all dimensions in mm)
Fig. 37: Mounting points for wall bracket RVT 523 DC IT and RVT 683 DC IT (Front view, all dimensions in
mm)
Unit type / dimensions
RVT 263 DC IT 375 375 165 275 45 45 70 305 280 95
RVT 353 DC IT 417.5 417.5 210 230 45 45 70 347.5 317.5 100
RVT 523 DC IT 497.5 497.5 183 227 45 45 100 397.5 357.5 140
RVT 683 DC IT 595 595 295 325 45 45 100 495 515 80
All dimensions in mm. In each case the diameter of the pipe break-through is Ø 65 mm
The wall bracket for the units must be attached with suitable screws and anchors.
A B C D E F G H I J
32
6 Installation
6.1 Installation of the indoor unit
The indoor unit is attached by means of a wall
bracket, taking into consideration the air outlet side
located in the lower part.
1. Mark the mounting points on the structurally
permissible building sections according to the
dimensions of the wall bracket.
2. If necessary, remove the break out opening
of the housing.
3. Connect the refrigerant piping, electrical
cables and condensate drainage line to the
indoor unit as described below.
4. Hang the indoor unit onto the wall bracket by
tilting it back slightly and by pressing the
bottom part of the unit against the bracket.
5. Check again that the unit is level. (
Fig. 38)
6.2 Connecting the refrigerant piping
The refrigerant piping is connected (responsibility
of the customer) on the back side of the units.
It may be necessary to fit a reducer or flared
adapter to the indoor unit. These fittings are
included with the indoor unit as an accessory kit.
Once installed, the connections should be insulated to make them vapour diffusion proof.
NOTICE!
Installation should only be performed by
authorised specialists.
NOTICE!
The unit is factory filled with dry nitrogen for
leak testing purposes. The pressurised
nitrogen is released when the union nuts are
undone.
Fig. 38: Horizontal positioning
The wall bracket for the units must be attached
with suitable screws and anchors.
NOTICE!
Use only tools which are approved for use in
an HVAC environment. (z. B.: bending pliers,
pipe/tubing cutters, de-burrers and flaring
tools). Do not cut refrigerant pipes with a saw.
NOTICE!
All work must be carried out in a way that prevents dirt, particles, water etc. from entering,
refrigerant lines!
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The following instructions describe the installation
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 "Technical data".
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 effects of structure-borne sound!
5. Lay the refrigerant piping from the indoor unit
to the outdoor unit. Ensure that the fastenings are adequate and if necessary, take
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 pipings as shown
below (Fig. 39 and Fig. 40
9. Verify that the shape of the flange is correct
(Fig. 41).
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 one
spanner to counter the force when tightening
the fitting (Fig. 42).
12. Use insulation hoses which are designed for
this temperature range and are diffusion
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. Take the same action at the shut-off valves
for all subsequent refrigerant piping.
).
Label the refrigerant piping (injection and suction pipes) as well as the associated electrical
control lines of each interior unit with a letter.
Only connect the lines to their associated connections.
NOTICE!
Always pay attention to the affiliation of the
electrical lines and refrigerant piping! The connections of the individual circuits must not be
mixed up. Mixing up the assignment of control
lines and refrigerant piping can have fatal consequences (compressor damage)!
Commissioning of the individual circuits must
be carried out successively.
Fig. 39: Deburring the refrigerant piping
1: Refrigerant piping
2: Deburrer
34
1
Fig. 40: Flanging the refrigerant piping
2
1
1: Flanging tool
Fig. 41: Correct flange shape
Fig. 42: 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
6.3 Additional notes on connecting the refrigerant piping
n When combining the outdoor unit with some
indoor units, the procedure for connecting the
refrigerant piping may differ. Install the provided reducer or expansion fittings to the
indoor unit.
n If the basic length of the connecting line
exceeds 5m, add refrigerant when commissioning the system for the first time (see
chapter "Adding refrigerant").
35
REMKO RVT...DC
6.4 Leak testing
Once all the connections have been made, the
pressure gauge station is attached to the Schrader
valve as follows (if fitted):
red = small valve = high pressure
blue = large valve = suction pressure
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.
NOTICE!
A vacuum of at least 20 mbar must be produced!
6.5 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
RVT 263 DC
0 g/m
RVT 523 DC
RVT 683 DC 40 g/m
CAUTION!
Wear protective clothing when handling refrigerant.
DANGER!
Only refrigerant in a liquid state may be used to
fill the cooling cycle!
From 5m to
max. length
20 g/mRVT 353 DC
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, the process will take at least 60
minutes. Once any foreign gases and humidity
have been completely extracted from the system,
the valves on the pressure gauge station are
closed and the valves on the outdoor unit are
opened as described in the "Commissioning" section.
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 device
contains refrigerant with a greenhouse potential of 1975. That means the escape of 1 kg of
this refrigerant has an effect on global warming
that is 1975 times greater than 1 kg CO2,
based on 100 years. Do not conduct any work
on the refrigerant circuit or dismantle the
device - always enlist the help of qualified
experts.
36
7 Condensate connection
3
2
4
9
5 5
11
100
6
8
7
10 10
12 12
1
EB
B
A
D
C
11
1
5
5
8
1
9
3
and safe drainage
Fig. 44: Dimensions for the strip foundation (bird's
eye view)
Please see the legend of Fig. 43 for the descriptions of 1,3,5,8,9 and 11
Dimensions of the strip foundation (in mm)
Fig. 43: Condensate drainage, seepage of condensate and strip foundation (cross-section)
1: Outdoor unit
2: Leg
3: Condensate collection tray
4: Floor bracket
5: Reinforced strip foundation
HxWxD = 300x200x800mm
6: Gravel layer for seepage
7: Condensate drainage heating
8: Drainage channel
9: Conduit for refrigerant piping and electrical
connecting line (temperature-resistant up to at
least 60°C)
10: Frost line
11: Drainage pipe
12: Soil
37
Dimension
RVT 263 DC-523
DC
RVT 683 DC
A 800 800
B 200 200
C 530 590
D 290 333
E 330 390
Condensate drainage connection
If the temperature falls below the dew point, condensation will form on the finned condenser during
heating mode.
A condensate tray should be installed on the
underside of the unit to drain any condensate.
n The condensate tray should have an incline of
min. 2%. This is the responsibility of the customer. If necessary, fit vapour-diffusion-proof
insulation.
n When operating the unit at outside tempera-
tures below 4℃, ensure the condensate
drainage is laid to protect it against frost. The
lower part of the housing and condensate tray
is also to be kept frost free in order to ensure
permanent draining of the condensate. If necessary, fit a pipe heater.
n Following installation, check that the conden-
sate run off is unobstructed and ensure that the
line is durably leak tight.
min. 2%
REMKO RVT...DC
Fig. 45: Condensate drainage connection - Indoor
unit
Safe drainage in the event of leakages
The REMKO oil separator OA 2.2 fulfils the following list of requirements from regional regulations and laws.
NOTICE!
Local regulations or environmental laws, for
example the German Water Resource Law
(WHG), can require suitable precautions to
protect against uncontrolled draining in case of
leakage to provide for safe disposal of
escaping refrigerator oil or hazardous media.
38
8 Electrical wiring
2
1
4
3
1
8.1 General Information
A protected power supply cable is to be connected
to the outdoor unit and a 4-wire control line to the
indoor unit respectively.
DANGER!
All electrical installation work is to be performed by specialist companies. Disconnect
the power supply when connecting the electrical terminals.
WARNING!
All electric lines are in accordance VDE regulations to dimension and to lay.
NOTICE!
The electrical connection for the units must be
made at a separate feedpoint with a residual
current device in accordance with local regulations and should be laid out by an electrician.
8.2 Connecting the indoor unit
n We recommend installing a main / repair switch
on the building close to the indoor unit. This is
the responsibility of the customer.
n The terminal blocks for making the connections
are located at the rear of the unit. When the
unit is installed, measurements can be made
from the front by removing the cover.
n If an optional condensate pump is used in con-
junction 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.
Make the connection as follows:
1. Open the air inlet grill.
2. Remove the covers on the right-hand side
(Fig. 46).
3. Connect the customer-laid control line to the
terminals (Fig. 46).
4. Re-assemble the unit.
We recommend using shielded wires for the
control lines.
Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.
Fig. 46: Connecting the indoor unit
1: Cover
2: Strain relief
3: Terminal block for control line
4: Control line from outdoor unit
39
230V/1~/50 Hz
L N PE L(1) 1 2(N) S L(1) 1 2(N) S
BA
1
2
REMKO RVT...DC
8.3 Connecting the outdoor unit
Proceed as follows to connect the line:
1. Remove the side-panel cover.
2. Choose a cable-section according to the rele-
vant specifications.
3. Connect the lines as shown on the electrical
connection diagram.
8.4 Electrical wiring diagram
Connection RVT 263 DC-683 DC
4. Fix the line in the strain relief and re-
assemble the unit.
Fig. 47: Connecting the outdoor unit
Fig. 48: Electrical wiring diagram
A: Outdoor unit RVT 263 DC-683 DC AT
B: Indoor unit RVT 263 DC-683 DC IT
1: Power supply
2: Communication line
40
Connection of optional condensate pump KP 6 / KP 8
L N PE
L N PE
L(1) 1 2(N) S
L(1) 1 2(N) S
L
N
WH
BK
A
B
C
1
2
3
Fig. 49: Electrical wiring diagram
A: Outdoor unit
B: Indoor unit
C: Condensate pump KP 6 / KP 8
1: Power supply
2: Condensate pump supply
3: Condensate pump fault contact
BK: Black
WH: white
41
3
4
CE-KFR26G/BP3N1Y-11M.D.11.NP2-1
202302130860
L_IN
CN10A
CN12_2
CN11
CN16
CN12_1
CN5
CN4
CN9
CN8
L_OUT
SW1
A
3
6
1
B
2
4
5
REMKO RVT...DC
8.5 Electrical drawings
Indoor units RVT 263 DC-353 DC IT
Fig. 50: Electrical drawings RVT 263 DC-353 DC IT
A: Supply CN = N
B: Supply (L_IN = 1, L_OUT = L)
1: Evaporator fan motor
2: Swing motor 2
3: Probe evaporator
4: Air circulation probe
5: Display
6: Ion generator
42
Indoor unit RVT 523 DC IT
3
4
CE-KFR50G/BP3N1Y-11M.D.11.NP2-1
202302130861
CN9
CN11
CN10A
CN12-2
CN8
CN12-1
CN4
SW1
L_IN
L_OUT
CN5
A
1
3
B
C
2
4
5
6
Fig. 51: Electrical drawingsRVT 523 DC IT
A: Supply terminal contact = L
B: Supply terminal contact = 1
C: Supply terminal contact = N
1: Evaporator fan motor
2: Display
3: Probe evaporator
4: Air circulation probe
5: Swing motor 1
6: Ion generator
43
3
4
202302130859
CN10A
CN4
CN5
CN11
CN44
FAN_IN
CN-KEY
CN12_1
CN12_2
L-OUT
L-IN
CN8
CN9
CN16
A
B
D
1C2 3 4
5
6
7
REMKO RVT...DC
Indoor unit RVT 683 DC IT
Fig. 52: Electrical drawings RVT 683 DC IT
A: Supply terminal contact = L
B: Supply terminal contact = 1
C: Supply terminal contact = N
D: Control line terminal contact = S
1: Air circulation probe
2: Probe evaporator
3: Evaporator fan motor
4: Swing motor 1
5: Plasma
6: Ion generator
7: Display
44
Outdoor units RVT 263 DC AT, RVT 353 DC AT und RVT 523 DC AT
X
CN302
CN303
CN8
CN10
CN11
CN301
CN13
CN12
CN15
3
4
CN401
CN400
CN9
CN104
CN103
CN102
CN100
CE-KFR26W/BP3(PFC).D.13.WP2-1 202302130906
2
1
4
3
5
6
7
A
Fig. 53: Electrical drawingsRVT 263 DC AT, RVT 353 DC AT und RVT 523 DC AT
A: Supply to the indoor unit
CN 12 = Terminal block indoor unit / contact N
CN 13 = Terminal block indoor unit / contact L
CN 15 = Terminal block indoor unit / contact S
1: Outside air probe, condenser probe
3: Injection valve
4: Condenser fan
5: 4-way valve
6: Reactor
7: Compressor
2: Heat gas probe
45
NO
NC
COM
L-OUT
RY2
GND
P-1
CN 4
NIN
L –IN
CN3
P1
P2
FUSF1
T5A 250VAC
CN 1
CN 8
CN 6
CN 9
CN 5
CN 2
SW 1
CN 26
CN 7
CN 17
CN 21
CN 39
CN 37
CN 29
DSP1
CE-KFR80W/BP3T4N1(DC MOTOR)-310.D.03.WP1-1
202302130895
X
CN 38
CN 10
202302130890
CE-KFR80W/BP2T4N1-310(B):D:13:MP1
CN8
LED1
LED2
CN10
CN7
CN9
CN6
CN1
CN11
CN12
CN2
CN4
CN5
CN3
1
CN4
A
B
2
3
4
5
6
7 8
9
10
11
13
14
15
17
18
19
11
16
20
12
REMKO RVT...DC
Outdoor unit RVT 683 DC AT
Fig. 54: Electrical drawings
A: Main board
B: Inverter board
1: Connection to the inverter board (contact CN 4)
2: Connection to the inverter board (contact CN 5)
3: Outside air probe, condenser probe
4: Heat gas probe
5: Connection to the inverter board (contact CN 1)
6: Condensate tray heating
7: Crankcase heating
8: 4-way valve
9: Connection to the inverter board (cont. CN 6)
10: Reactor
11: Connection to the inverter board
(contacts CN 11, CN 12)
12: Control line indoor unit (yellow), contact S
13: Supply indoor unit (red), contact L, (L1)
14: Supply indoor unit (black), contact N, (L2)
15: Connection to the main board (contact CN 21)
16: Connection to the main board (contact CN 38)
17: Connection to the main board (contact CN 39)
18: Connection to the main board (contact NO-OUT)
19: Connection to the main board
(contact RY2 COM)
20: Compressor
46
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-off valves and valve caps
are tight after carrying out any work on the
cooling cycle. Use appropriate sealant products as necessary.
Functional checks and test run
Check the following points:
n Leak-tightness of the refrigerant piping.
n Compressor and fan running smoothly.
n In cooling mode, cold air output by the indoor
unit, and warm air output by the outdoor unit.
n Function test of the indoor unit and all program
sequences.
n Check of the surface temperature of the suc-
tion pipe and that the vaporiser is not overheating. To measure the temperature, hold the
thermometer to the suction pipe and subtract
the boiling point temperature reading on the
pressure gauge from the measured temperature.
n Record the measured temperatures in the
commissioning report.
47
REMKO RVT...DC
Function test of the cooling and heating modes
1. Remove the protective caps from the valves.
2. Start the commissioning procedure by briefly
opening the shut-off valves on the outdoor
unit until the pressure gauge indicates a
pressure of approx. 2 bar.
3. Check all connections for leaks with leak
detection spray and suitable leak detectors.
4. If no leaks are found, fully open the shut-off
valves by turning them anti-clockwise using a
spanner. If leaks are found, remedy the faulty
connection. It is imperative that the vacuum
creation and drying steps are repeated.
5. Activate the main circuit breaker or fuse (to
be provided by the customer).
6. Press the test knob on the outdoor unit and
wait until a frequency of min. 50 Hz is established.
7. Use the remote control to switch on the unit
and select the cooling mode, maximum fan
speed and lowest target temperature.
8. 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.
9. Check the unit control system using the functions described in the chapter "Operation".
Timer, temperature setting, fan speeds and
switching to ventilation or dehumidification
mode.
10. Check the correct function of the condensate
drainage by pouring distilled water into the
condensate tray. A bottle with a spout is recommended for pouring the water into the
condensation tray.
11. Switch the indoor unit to heating mode.
12. During the test run, check the functionality of
all of the previously described safety devices.
13. Record the measured values into the commissioning report and familiarise the operator
with the system.
14. Remove the pressure gauge. Check that
seals have been fitted in the sealing caps.
15. Re-install all disassembled parts.
48
11 Troubleshooting, fault analysis and customer service
11.1 Troubleshooting and customer service
The unit and components are manufactured using state-of-the-art production methods and tested several
times to verify their correct function. However, if alarms should occur, please check the functions as detailed
in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting and
customer service" in both operating manuals. Please inform your dealer if the unit is still not working correctly
after all function checks have been performed!
Operational malfunctions
Malfunction Possible causes Checks Remedial measures
The unit does not start or
switches itself off.
Power failure, undervoltage, defective mains
fuse / main switch in
OFF position
Damaged power supply Does all other elec.
Wait time after switching
on is too short
Temperature outside
operating range.
Electrical surges caused
by thunderstorms
Malfunction of the
external condensate
pump
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, wait for it to
come back on.
Repair by specialist firm
Schedule longer wait
times
Observe temperature
ranges of indoor unit and
outdoor unit
Switch off the mains
breaker and switch it
back on. Have it
inspected by a specialist
Check and if necessary
clean the pump
Rectify leakage and restart
Transmission distance
too far / receiver affected
by interference
Defective remote control Is the unit running in
Receiver or transmitter
unit exposed to exces-
The unit does not
respond to the remote
control
49
sive solar radiation
Electromagnetic fields
are interfering with transmission
Button in remote control
jammed / two buttons
pressed at same time
Batteries in remote control are flat
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 6m 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
REMKO RVT...DC
Malfunction Possible causes Checks Remedial measures
The unit is running but
only provides reduced or
no cooling or heating
output.
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?
Does the fan of the outdoor unit work? Are the
exchanger fins unobstructed?
on the exchanger fins of
the indoor unit?
the cassette probe on
the outdoor unit been
correctly positioned?
Can the condensate
drain off without any
obstruction?
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
Faulty external condensate pump or float
Condensate has not
drained away and has
collected in the condensate drainage line
Condensate does not
drain off
Float is stuck or jammed
due to excessive dirt.
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
Ensure there is an incline
when laying the condensate drainage line and
clean the pipe.
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
50
Malfunction on the indoor unit
YES
NO
YES
Indication
E0 EEPROM error See error analysis
E1
E2 Phase monitoring has responded Check wiring
E3 Evaporator fan motor speed too low / defective See error analysis
E4
E5
EC
F1
F2
F3
Cause Required action
Communication error between outdoor and
indoor unit
Ambient air probe on indoor unit defective /
connection interrupted (T1)
Register probe on indoor unit defective /
connection interrupted (T2)
Cooling mode: no cooling output after 30 min.
Heating mode: no heating output after 30 min.
Ambient air probe for outdoor unit faulty /
connection interrupted (T4)
Register probe on outdoor unit defective /
connection interrupted (T3)
Heat gas probe on outdoor unit faulty /
connection interrupted (T5)
Contact specialist dealer
Check connection and plug
Check connection and plug
Contact specialist dealer
Check connection and plug
Check connection and plug
Check connection and plug
F4 EEPROM error on outdoor unit
F5 Condenser fan speed not alright See error analysis
P0
P1 Overload switch on outdoor unit tripped (250V) Check the voltage of the power supply
P2
P3
Rotational speed monitoring on compressor
has responded (inverter module)
Excessive temperature (Klixon) compressor
has tripped
Compressor overcurrent protection
has responded
Switch off power to unit for 1 min.
Contact specialist dealer.
Check connections CN4 and CN1 on the outdoor unit PCB / Contact specialist dealer
Check the refrigerant quantity / Check the
resistance of the compressor sensor (normal
0Ω)
Check winding resistance of the compressor
(1Ω = U-V / U-W / V-W)
11.2 Diagnosis and solution indoor unit
Error E0: EEPROM parameter error
Shut off the power supply and turn it on 5 sec-
onds later. Is it still displaying the error code?
Is the EEPROM chip plugged in PCB well?
Correct the connection.
Replace the ind.
51
YES
YES
NO
YES YES
YES
NO
NO
YES
REMKO RVT...DC
Error E1: Indoor/outdoor units communication error
Power off, then turn on the unit 5 seconds later
(reconnect the power wire). Is the erorr still dis-
playing after several minutes?
Check all the wirings between indoor and out-
door, indoor PCB and outdoor PCB following
the wiring diagram. Are all the wirings con-
nected correctly?
Is -24V<Vs<+24V?
(Vs is the voltage between S and N of outdoor
unit).
Is the wiring to the outdoor PCB connected cor-
rectly?
Change the outdoor main PCB.
Is the wiring to the indoor PCB connected cor-
rectly?
Change the indoor PCB.
Power on. Is the error extinguished?
Error E2: Zero crossing detection error
Check if the connections and power supply is
normal?
Indoor PCB is defective. Replace indoor PCB.
Correct the connections. Turn on the unit when
the power supply is good.
52
Error E3: Indoor fan speed has been out of control
NO
YES
NO
YES YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
Shut off the power
supply and turn it on
5 seconds later. Is it
still displaying the
error code?
Shut off the power
sopply, rotate the
cross fan by hand.
Does it rotate prop-
erly?
Check the wires of
fan motor. Are all
the connections
good?
Correct the connec-
tions.
The unit operates normally.
Disassembly the connection between fan
and motor, check if the bearing is normal?
Replace indoor fan
motor.
Replace the
bearing.
Check the resist-
ance value of indoor
fan motor, is it
normal?
Replace indoor
PCB.
Error E3-E4 and F1-F3 : sensor error
Check the connections between temperature
sensor and PCB. Are the connections good?
Check the resistance of the sensor. Use the
resistance-sensor. Does the Resistance of the
sensor with the value in the table match?
Replace indoor fan
motor.
Correct the connetions.
Replace the sensor.
Replace indoor or outdoor PCB.
53
YES
YES
NO YES
YES
NO
YES
REMKO RVT...DC
Error EC: Refrigerant leakage detection
Shut off the power supply and turn it on 5 sec-
onds later. Is it still displaying the error code?
Is there cool air blowing out from indoor air
outlet?
Is there any leakage? Especially the connec-
tions parts, such as the gas valve and the liquid
valve.
Is there any blocking? (such as the capillary or
the welded points of the pipes).
Clear the blocking.
Check if T2 sensor is well fixed. Correct the
installation or replace T2 sensor. Does the
problem remain again?
Replace indoor PCB.
Repair the leakage and recharge the refrig-
erant.
54
Error F5: Condenser fan speed not alright
NO
YES
NO
YES YES
NO
NO
YES
NO
YES
NO
YES
Shut off the power supply and turn it on 5
seconds later. Is it still displaying the error
code?
Shut off the power sopply, rotate the cross
fan by hand. Does it rotate properly?
The unit operates normally.
Disassembly the connection
between fan and motor,
check if the bearing is
normal?
Check the wires of fan motor. Are all the
connections good?
3
4
6
Correct the
connections.
Replace
indoor fan
motor.
Replace
5
indoor fan
motor.
Replace the
bearing.
55
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
YES
YES
REMKO RVT...DC
Error P0: IPM malfunction or IGBT over strong current protection
Check if the wiring between module PCB and
compressor connected correctly.
IPM continuity check. Check if the IPM terminal
resistance values are uniform.
Check if the IPM installed correctly. Check if the
outdoor fan can run properly
Replace outdoor control PCB. Does the
problem still remain?
Replace the compressor.
Error P1: Over voltage or over low voltage protection
Correct the connection.
Replace the module PCB.
Correct the installation, tighten the screws and
apply silicon grease. Correct the connection of
fan motor or reolace the fan motor.
Check if the power supply is normal.
Check if all the connections are good
Check if the voltage between P and N is around
DC 320V
Replace outdoor control PCB.
Disconnect the unit with power supply and try to
restart the unit when power supply gets normal.
Correct the connections.
56
Error P2: High temperature protection of compressor top
YES
NO
YES
NO
YES
NO
YES
NO
Check if the air flow system of indoor and out-
door units are obstructed?
Turn off the power supply and turn it on 10
minutes later.
Check if the unit can start normally
Refrigerant system is blocked, such as capillary
or weled point of pipes.
Error P3: Compressor drive error
Check all the wires between control PCB,
module PCB and compressor.
Clear up the air inlet and outlet or the heat
exchanger of indoor and outdoor units.
Check if all the connection, especially the con-
nection of OLP (Over Load Protector) sensor is
good.
Correct the connections.
IPM continuity check. Check if the IPM terminal
resistance values are uniform.
Replace the compressor.
57
W
T
T5
T1, T2, T3, T4
REMKO RVT...DC
Resistance values of the sensors T1, T2, T3 and T4
Temperature (°C) 5 10 15 20 25 30 40 50 60
Resistance value (kW) 26,9 20,7 16,1 12,6 10,0 8,0 5,2 3,5 2,4
Resistance value of the sensor T5
Temperature (°C) 5 15 25 35 60 70 80 90 100
Resistance value (kW) 141,6 88 56,1 36,6 13,8 9,7 6,9 5,0 3,7
Temperature / resistance
Fig. 55: Temperature / resistance
W: Resistance (kW) T: Temperature (°C)
58
12 Care and maintenance
Regular care and observation of some basic points
will ensure trouble-free operation and a long
service life.
DANGER!
Prior to performing any work, ensure the equipment is disconnected from the voltage supply
and secured to prevent accidental switch-on!
Care
n Ensure the unit is protected against dirt, mould
and other deposits.
n Only clean the unit using a damp cloth. Do not
use any caustic, abrasive or solvent-based
cleaning products. Do not use a jet of water.
n Clean the fins on the unit prior to long shut-
down periods.
Maintenance
n It is recommended that you take out a mainte-
nance contract with an annual service from an
appropriate specialist firm.
This enables you to ensure the operational reliability of the plant at all times!
NOTICE!
Statutory regulations require an annual leak
test for the cooling cycle dependant on the
refrigerant quantity. Inspection and documentation of the work performed is to be carried out
by specialist technicians.
Type of task
Checks/maintenance/inspection
General
Check voltage and current
Check function of compressor/fans
Dirt on condenser/evaporator
Check refrigerant fill quantity
Check condensate drainage
Check insulation
Check moving parts
Sealing test for cooling cycle
1)
See note
Commis-
sioning
l
l
l
l l
l
l
l
l
l
Monthly Every 6
months
l
l
Yearly
l
l
l
l
l
1)
l
59
REMKO RVT...DC
Cleaning the housing
1. Disconnect the power supply to the unit.
2. Open and fold the air inlet grill on the front
side upwards.
3. Clean the grill and cover with a soft, damp
cloth.
4. Switch the power supply back on.
Air filter for indoor unit
Clean the air filter at intervals of no more than 2
weeks. Reduce this interval if the air is especially
dirty.
Cleaning the filter
1. Disconnect the power supply to the unit.
2. Open the front side of the unit by folding the
grill upwards and allowing it to engage
(Fig. 56).
3. Raise the filter and pull it out in a downwards
direction (Fig. 56).
4. Clean the filter with a commercially available
vacuum cleaner (Fig. 57
dirty side so it is facing upwards.
5. Dirt can also be removed by carefully
cleaning with lukewarm water and mild
cleaning agents (
should be face down.
6. If water is used, let the filter dry out properly
in the air before fitting it back into the unit.
Fig. 58). The dirty side
). To do so, turn the
Fig. 56: Folding the grill upwards
Fig. 57: Cleaning with a vacuum cleaner
7. Carefully insert the filter. Ensure that it
locates correctly.
8. Close the front side as described above in
reverse order.
9. Switch the power supply back on.
10. Switch the unit back on.
Cleaning the condensate pump (accessories)
The indoor unit may contain an optional integrated
or separate condensate pump, which pumps out
any accumulated condensate into higher positioned drains.
Observe the care and maintenance instructions in
the separate operating manual.
Fig. 58: Cleaning with lukewarm water
60
13 Shutdown
Temporary shutdown
1. Let the indoor unit run for 2 to 3 hours in
recirculation mode, or in cooling mode at
maximum temperature, to extract any
residual humidity from the unit.
2. Shut down the system using the remote control.
3. Switch off the electrical power supply to the
unit.
4. Cover the unit as far as possible with plastic
foil in order to protect it from the influences of
weather.
Permanent shutdown
Ensure that units and components are disposed of
in accordance with local regulations, e.g. through
authorised disposal and recycling specialists or at
collection points.
REMKO GmbH & Co. KG or your contractual
partner will be pleased to provide a list of certified
firms in your area.
61
REMKO RVT...DC
14 Exploded view and spare parts lists
14.1 Exploded view - Indoor unit RVT 263 DC-683 DC IT
Fig. 59: Exploded view of the unit RVT 263 DC-683 DC IT
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
62
14.2 Spare parts list - Indoor unit RVT 263 DC-683 DC IT
Please contact REMKO GmbH & Co. KG directly to order spare parts. All of the spare parts numbers for your
unit can be found in the download area at www.remko.de.
No. Designation RVT 263 DCITRVT 353 DCITRVT 523 DCITRVT 683 DC
IT
1 Unit trim
2 Air filter, set
3 Horizontal swing motor
4 Vertical swing motor
5 Air outlet fins
6 Housing back incl. condensate tray
7 Evaporator
8 Fan wheel
9 Rubber mount fan rotor
10 Control board
11 IR remote control
12 Ambient air probe
13 Evaporator probe
14 Display board
15 Condensate hose
16 Wall bracket
17 Housing front
18 Fan motor
19 Fine dust filter
To assure the correct delivery of spare parts, please always enter the unit type with its corresponding serial
number (see name plate).
On request by providing the serial number
63
REMKO RVT...DC
14.3 Exploded view - Outdoor unit RVT 263 DC-523 DC AT
Fig. 60: Exploded view of the unit RVT 263 DC-523 DC AT
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
64
14.4 Spare parts list - Outdoor unit RVT 263 DC-523 DC AT
Please contact REMKO GmbH & Co. KG directly to order spare parts. All of the spare parts numbers for your
unit can be found in the download area at www.remko.de.
No. Designation RVT 263 DCATRVT 353 DCATRVT 523 DC
AT
1 Condenser air probe
2 Condenser safety net
3 Condenser
4 Condenser pipe placement probe
5 Shut-off valve mounting plate
6 Base plate
7 Side section, housing, right
8 Plastic covering, terminal block
9 Plastic covering, pipe connections
10 Protection grid, front plate
11 Front plate
12 Fan blade
13 Fan motor
14 Fan motor mount
15 Partitioning panel
16 Choke
17 Corner panel
18 Housing cover
19 Control board
20 Cooling element
21 Shut-off valve, suction pipe
22 Reversing valve
23 Shut-off valve, injection pipe
On request by providing the serial number
24 Electronic injection valve
25 Compressor
26 Compressor pipe placement probe
Spare parts not illustrated
Crankcase heating
Condensate tray heating
To assure the correct delivery of spare parts, please always enter the unit type with its corresponding serial
number (see name plate).
65
On request by providing the serial number
REMKO RVT...DC
14.5 Exploded view - Outdoor unit RVT 683 DC AT
Fig. 61: Exploded view of the unit RVT 683 DC AT
We reserve the right to modify the dimensions and design as part of the ongoing technical development
process.
66
14.6 Spare parts list - Outdoor unit RVT 683 DC AT
Please contact REMKO GmbH & Co. KG directly to order spare parts. All of the spare parts numbers for your
unit can be found in the download area at www.remko.de.
No. Designation RVT 683 DC AT
1 Condenser air probe
2 Condenser safety net
3 Condenser
4 Condenser pipe placement probe
5 Shut-off valve mounting plate
6 Base plate
7 Side section, housing, right
8 Plastic covering, terminal block
9 Plastic covering, pipe connections
10 Front panel, right
11 Front panel, left
12 Protection grid, front plate
13 Fan blade
14 Fan motor
15 Fan motor mount
16 Mounting plate, rear
17 Housing cover
18 Corner panel
19 Partitioning panel
20 Control board
21 Inverter board
22 Cooling element
23 Shut-off valve, injection pipe
24 Shut-off valve, suction pipe
On request by providing
the serial number
25 Compressor
26 Compressor pipe placement probe
27 Choke
Spare parts not illustrated
Crankcase heating
Condensate tray heating
To assure the correct delivery of spare parts, please always enter the unit type with its corresponding serial
number (see name plate).
67
On request by providing
the serial number
REMKO RVT...DC
15 Index
A
Alarms
Checks .............................49
Possible causes ......................49
Remedial measures ...................49
C
Care and maintenance ...................59
Characteristic curves
Cooling ....................12, 13, 14, 15
Heating ....................12, 13, 14, 15
Cleaning
Air filter for indoor unit .................60
Condensate pump ....................60
Housing ............................60
Condensate connection and safe drainage ....37
Condensate pump, electrical wiring diagram ..41
Cooling mode ..........................17
Customer service .......................49
D
Disposal of equipment .....................7
E
Electrical drawings ...........42, 43, 44, 45, 46
Electrical wiring .........................39
Electrical wiring diagram ..................40
Electrical wiring diagram, condensate pump ..41
Environmental protection ...................7
Exploded view of the unit ............62, 64, 66
F
Function test of the cooling and heating modes
Functional checks .......................47
48
I
Infrared remote control ...................19
Installation
Outdoor unit .........................28
Strip foundation ......................37
Installation materials .....................27
Intended use ............................6
K
Keys on the remote control ................20
M
Maintenance ...........................59
Malfunction on the indoor unit ..............51
Manual mode ..........................19
Minimum clearances .....................30
O
Oil return measures ......................31
Ordering spare parts ...............63, 65, 67
P
Propellant in accordance with Kyoto Protocol ...9
R
Remote control
Keys ...............................20
S
Safe drainage in the event of leakages .......38
Safety
Dangers of failure to observe the safety
notes ...............................5
General .............................5
Identification of notes ...................5
Notes for inspection ....................6
Notes for installation ....................6
Notes for maintenance ..................6
Personnel qualifications .................5
Safety notes for the operator .............6
Safety-conscious working ................5
Unauthorised modification ...............6
Unauthorised replacement part manufacture
Shutdown
Permanent ..........................61
Temporary ..........................61
Sound power level .......................11
Sound pressure level ....................11
Spare parts list ...................63, 65, 67
. 6
T
Test run ...............................47
Troubleshooting and customer service .......49
U
Unit installation .........................33
W
Wall opening ...........................27
Warranty ...............................6
68
69
REMKO RVT...DC
70
Consulting
Thanks to intensive training,
our consultants are always
completely up-to-date in terms
of technical knowledge. This has
given us the reputation of being
more than just an excellent,
reliable supplier:
REMKO, a partner
helping you find solutions to
your problems.
Distribution
REMKO offers not just a well
established sales network both
nationally and internationally, but
also has exceptionally highlyqualified sales specialists.
REMKO field staff are more than
just sales representatives: above
all, they must act as advisers to
our customers in air conditioning
and heating technology.
SFlbCustomer Service
Our equipment operates
precisely and reliably. However,
in the event of a fault, REMKO
customer service is quickly at
the scene. Our comprehensive
network of experienced dealers
always guarantees quick and
reliable service.
REMKO INTERNATIONAL
… and also right in your neighbourhood!
Make use of our experience and advice
We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!
REMKO GmbH & Co. KG
Air conditioning and heating technology
Im Seelenkamp 12 D-32791 Lage
Postfach 1827 D-32777 Lage
Telephone +49 5232 606-0
Telefax +49 52 32 6 06-260
E-mail info@remko.de
Website www.remko.de
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