Remko RVT 265 DC, RVT 355 DC User guide

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Operating and installation instructions
REMKO RVT series
Wall units - cooling and heating
RVT 265 DC, RVT 355 DC
0265-2022-10 Edition 2, en_GB
Read the instructions prior to performing any task!
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Refrigerant
Read these operating instructions carefully before commis­sioning / using this device!
These instructions are an integral part of the system and must always be kept near or on the device.
Subject to modifications; No liability accepted for errors or mis­prints!
Translation of the original
Page 3

Table of contents

1 Safety and usage instructions............................................................................................................. 5
1.1 General safety notes....................................................................................................................... 5
1.2 Identification of notes...................................................................................................................... 5
1.3 Personnel qualifications.................................................................................................................. 5
1.4 Dangers of failure to observe the safety notes................................................................................ 5
1.5 Safety-conscious working............................................................................................................... 6
1.6 Safety instructions for the operator................................................................................................. 6
1.7 Safety notes for installation, maintenance and inspection ............................................................. 6
1.8 Unauthorised modification and changes......................................................................................... 7
1.9 Intended use................................................................................................................................... 7
1.10 Warranty........................................................................................................................................ 7
1.11 Transport and packaging............................................................................................................... 7
1.12 Environmental protection and recycling........................................................................................ 8
2 Technical data........................................................................................................................................ 9
2.1 Unit data.......................................................................................................................................... 9
2.2 Unit dimensions............................................................................................................................. 11
2.3 Performance data.......................................................................................................................... 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
4.1 General notes................................................................................................................................ 19
4.2 Indicators on indoor unit................................................................................................................ 19
4.3 Keys on the remote control........................................................................................................... 20
5 Installation instructions for qualified personnel.............................................................................. 28
5.1 Important notes prior to installation............................................................................................... 28
5.2 Wall openings................................................................................................................................ 28
5.3 Installation materials..................................................................................................................... 28
5.4 Layout, indoor unit......................................................................................................................... 28
5.5 Installation, mounting outdoor unit................................................................................................ 29
5.6 Minimum clearances..................................................................................................................... 31
5.7 Connection variants for the indoor unit......................................................................................... 31
5.8 Oil return measures....................................................................................................................... 32
5.9 Connection of the indoor unit when the refrigerant piping is installed under the plaster............... 33
5.10 Wall bracket of the indoor units................................................................................................... 33
6 Installation........................................................................................................................................... 34
6.1 Installation of the indoor unit......................................................................................................... 34
6.2 Connecting the refrigerant piping.................................................................................................. 35
6.3 Additional notes on connecting the refrigerant piping................................................................... 37
6.4 Leak testing................................................................................................................................... 37
6.5 Adding refrigerant.......................................................................................................................... 38
7 Condensate drainage connection and safe drainage...................................................................... 38
8
Electrical wiring................................................................................................................................... 40
8.1 General Information...................................................................................................................... 40
8.2 Connecting the indoor unit............................................................................................................ 40
8.3 Connecting the outdoor unit.......................................................................................................... 41
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REMKO RVT series
8.4 Electrical wiring diagram............................................................................................................... 41
8.5 Electrical drawings........................................................................................................................ 43
8.6 Connection of a superordinate controller ..................................................................................... 45
9 Before commissioning....................................................................................................................... 47
10
Commissioning................................................................................................................................... 47
11 Troubleshooting, fault analysis and customer service................................................................... 49
11.1 Troubleshooting and customer service........................................................................................ 49
11.2 Indoor unit fault analysis.............................................................................................................. 51
11.3 Resistances of the temperature probes...................................................................................... 62
12 Care and maintenance........................................................................................................................ 65
13 Shutdown............................................................................................................................................. 67
14 Exploded view and spare parts lists................................................................................................. 68
14.1 Exploded view of indoor unit RVT 265-355 DC IT...................................................................... 68
14.2 Spare parts list for the indoor unit RVT 265-355 DC IT.............................................................. 69
14.3 Exploded view of the outdoor units RVT 265-355 DC AT........................................................... 70
14.4 Spare parts list for outdoor units RVT 265-355 DC AT............................................................... 71
15 Index..................................................................................................................................................... 72
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1 Safety and
usage instructions

1.1 General safety notes

Carefully read the operating manual before com­missioning the units or their components for the first time. It provides useful tips and notes such as hazard warnings to prevent injury and material damage. Failure to follow manual can endanger persons, the environment and the equipment itself or its components and will void any claims for liability.
Store this manual and the information required for the operation of this system (e.g. refrigerant data­sheet) in the vicinity of the unit.
The refrigerant used in the system is flammable. If applicable, observe the local safety conditions.
the directions in this
DANGER!
This combination of symbol and signal word warns of a situation in which there is immediate danger cause serious injury.
This combination of symbol and signal word warns of a potentially hazardous situation, which if not avoided may be fatal or cause serious injury
, which if not avoided may be fatal or
WARNING!
.
Warning of inflammable substances!

Identification of notes

1.2
This section provides an overview of all important safety aspects for proper protection of people and safe and fault-free operation.The instructions and safety notes contained within this manual must be observed in order to prevent accidents, personal injury and material damage.
Notes attached directly to the units must be observed in their entirety and be kept in a fully legible condition.
Safety notes in this manual are indicated by sym­bols. Safety notes are introduced with signal words which help to highlight the magnitude of the danger in question.
CAUTION!
This combination of symbol and signal word warns of a potentially hazardous situation, which if not avoided may cause injury or mate­rial and environmental damage.
NOTICE!
This combination of symbol and signal word warns of a potentially hazardous situation, which if not avoided may cause material and environmental damage.
This symbol highlights useful tips and recom­mendations as well as information for efficient and fault-free operation.

1.3 Personnel qualifications

DANGER!
Contact with live parts poses an immediate danger of death due to electric shock. Damage to the insulation or individual components may pose a danger of death.
Personnel responsible for commissioning, opera­tion, maintenance, inspection and installation must be able to demonstrate that they hold a qualifica­tion which proves their ability to undertake the work.
Dangers of failure to observe
1.4 the safety notes
Failure to observe the safety notes may pose a risk to people, the environment and the units. Failure to observe the safety notes may void any claims for damages.
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REMKO RVT series
In particular, failure to observe the safety notes may pose the following risks:
n The failure of important unit functions. n The failure of prescribed methods of mainte-
nance and repair
n Danger to people on account of electrical and
mechanical effects.
.

1.5 Safety-conscious working

The safety notes contained in this manual, the existing national regulations concerning accident prevention as well as any internal company working, operating and safety regulations must be observed.
Safety instructions
1.6 for the operator
The operational safety of the units and compo­nents is only assured providing they are used as intended and in a fully assembled state.
n The units and components may only be set up,
installed and maintained by qualified per­sonnel.
n Protective covers (grills) over moving parts
must not be removed from units that are in operation.
n Do not operate units or components with
obvious defects or signs of damage.
n Contact with equipment parts or components
can lead to burns or injury
n The units and components must not be
exposed to any mechanical load, extreme levels of humidity or extreme temperatures.
n Rooms in which refrigerant may escape shall
be adequately aerated and ventilated. Other­wise, a risk of suffocation or fire exists.
n Do not leave children unsupervised when close
to the system.
n Commissioning must be performed by author-
ised specialists exclusively. Deficient commis­sioning may lead to water leaks, electric shocks or fire. Commissioning must take place as described in the user manual.
n Only instruct authorised specialist personnel to
perform maintenance or servicing.
n The system is filled with a flammable refrig-
erant. Never thaw any frozen unit components independently!
n Do not operate any further devices that pro-
duce high heat or naked flames in the same room.
.
n All housing parts and unit openings, e.g. air
inlets and outlets, must be kept clear
n The units must be inspected by a service tech-
nician to ensure that they are safe to use and fully functional at least once yearly. Visual inspections and cleaning may be performed by the operator when the units are disconnected from the mains.
.

1.7 Safety notes for installation, maintenance and inspection

n The refrigerant R32 used in the system is flam-
mable. If applicable, observe the local safety conditions.
n Keep the cooling circuit clear of other gases
and foreign substances. Only fill the cooling cir­cuit with the refrigerant R32.
n Only use the accessories, components and
appropriately marked parts provided. The use of non-standardised components may result in water leaks, electric shocks and fire.
n Only install and store the units in rooms larger
than 4 m2. With a failure to comply result in the room filling with a flammable mix­ture!
The minimum room size of 4 m2 required for installation and storage pertains to the basic fill quantity of the unit. This varies according to the installation type and total fill quantity of the system. The calculation must take place in accordance with valid DIN standards. Make sure that the installation site is suitable for safe unit operation.
n Only mount the unit components on structurally
suitable brickwork.
n The units must not be installed in rooms in
which further devices that produce heat are operated (heaters, open hearths).
n Make sure the installation room is sufficiently
ventilated.
n Interventions in the cooling circuit are only pos-
sible after completely draining the refrigerant. Never solder or grind unit components!
n Note that refrigerant may be odourless. n Never operate the air conditioning unit in a
humid room, such as a bathroom or laundry room. If the humidity is too high, this can cause short circuits on electrical parts.
n The product must be correctly earthed at all
times, otherwise it may induce electric shocks.
n Attach the condensate drain as described in
the operating manual. The inadequate drainage of condensate can lead to water damage in your apartment.
n All persons who intervene in the cooling circuit
must hold a valid certificate from the chamber of industry and commerce, which confirms their ability to work with refrigerant.
, leaks may
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n Appropriate hazard prevention measures must
be taken to prevent risks to people when per­forming installation, repair cleaning work on the units.
n The setup, connection and operation of the
units and its components must be undertaken in accordance with the usage and operating conditions stipulated in this manual and comply with all applicable regional regulations.
n Regional regulations and laws as well as the
Water Ecology Act must be observed.
n The power supply should be adapted to the
requirements of the units.
n Units may only be mounted at the points pro-
vided for this purpose at the factory. The units may only be secured or mounted on stable structures, walls or floors.
n The units and components should not be oper-
ated in areas where there is a heightened risk of damage. Observe the minimum clearances.
n The units and components must be kept at an
adequate distance from flammable, explosive, combustible, abrasive and dirty areas or atmospheres.
n Safety devices may not be modified or
bypassed.
n The connection of the indoor unit must be
established as a permanent connection; a detachable, reusable connection is not permis­sible.
, maintenance or

1.8 Unauthorised modification and changes

1.10 Warranty

For warranty claims to be considered, it is essential that the ordering party or its representative com­plete and return the "certificate of warranty" to REMKO GmbH & Co. KG at the time when the units are purchased and commissioned.
The warranty conditions are detailed in the "Gen­eral business and delivery conditions". Further­more, only the parties to a contract can conclude special agreements beyond these conditions. In this case, contact your contractual partner in the first instance.
1.1

1 Transport and packaging

The devices are supplied in a sturdy shipping con­tainer. Please check the equipment immediately upon delivery and note any damage or missing parts on the delivery and inform the shipper and your contractual partner. For later complaints can not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to children!
Modifications or changes to units and components are not permitted and may cause malfunctions. Safety devices may not be modified or bypassed. Original replacement parts and accessories authorised by the manufactured ensure safety use of other parts may invalidate liability for resulting consequences.
. The

1.9 Intended use

Depending on the model, the units and the addi­tional fittings with which they are equipped are only intended to be used as an air-conditioner for the purpose of cooling or heating the air in an enclosed space.
Any different or additional use is a non-intended use. The manufacturer/supplier assumes no lia­bility for damages arising from a non-intended use. The user bears the sole risk in such cases. Intended use also includes working in accordance with the operating and installation instructions and complying with the maintenance requirements.
The threshold values specified in the technical data must not be exceeded.
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REMKO RVT series

1.12 Environmental protection and recycling

Disposal of packaging
All products are packed for transport in environ­mentally friendly materials. Make a valuable contri­bution to reducing waste and sustaining raw mate­rials. Only dispose of packaging at approved collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufac­ture of the devices and components. Help protect the environment by ensuring that the devices or components (for example batteries) are not dis­posed in household waste, but only in accordance with local regulations and in an environmentally safe manner, e.g. using certified firms and recy­cling specialists or at collection points.
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2 Technical data

2.1 Unit data

Series RVT 265 DC RVT 355 DC
Operating mode
Nominal cooling output
Energy efficiency ratio SEER
1)
1)
Rated power consumption, electrical cooling
Rated elec. curr. consump., cooling
Power consumption, annual, QCE
Energy efficiency ratio, cooling
Nominal heat capacity
2)
Energy efficiency ratio SCOP
1)
3)
1)
4)
Rated power consumption, electrical heating
Rated elec. curr. consump., heating
Power consumption, annual, QHE
Energy efficiency ratio, heating
2)
3)
2)
kW
1)
kW
kWh 102 137
kW
2)
kW
kWh 643 647
Inverter wall-mounted room air conditioner com-
bination for cooling and heating
2.63 (0.99-4.15) 3.52 (1.03-4.81)
9.2 9.0
0.483 0.75
A
2.1 3.3
A+++
4.10 (0.75-6.99) 4.24 (0.75-7.19)
5.3
0.834 0.943
A
3.6 4.1
A+++
Max. power consumption kW 2.42 3.11
Max. current consumption A 10 13
EDP no. 1623750 1623760
Data specific to indoor unit (IT) RVT 265 DC RVT 355 DC
Application area (room volume), approx.
m
3
80 100
Adjustment range, room temperature °C +16 to +32
Operating range °C +16 to +30
Air flow volume per stage
Sound pressure level per stage
5)
Sound pressure level, Silent/Turbo mode
m3/h
dB (A) 23/26/29/33/38 28/31/34/37/40
5)
dB (A) 22 21
285/380/430/500/565 310/380/450/530/590
Sound power level max. dB(A) 58 59
Enclosure class IP X0
Condensate drainage connection mm 18
Dimensions: H/W/D mm 298/895/248
Weight kg 13
EDP no. 1623752 1623762
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REMKO RVT series
Data specific to outdoor unit (AT) RVT 265 DC RVT 355 DC
Power supply V/Ph/Hz 230/1~/50
Operating range, cooling °C -25 to +50
Operating range, heating °C -30 to +30
Air flow rate, max.
m3/h
2000
Enclosure class IP 24
Sound power level max. dB (A) 59 61
Sound pressure level
Refrigerant
6)
5)
dB (A) 57
R32
Refrigerant, basic quantity kg 0.87
CO2 equivalent t 0.58
Operating pressure, max. kPa 4300/1700
Refrigerant, additional quantity >5m g/m 20
Refrigerant piping, max. length m 25
Refrigerant piping, max. height m 10
Refrigerant connection
Liquid line
Refrigerant connection
Suction pipe
Inches
(mm)
Inches
(mm)
1/4 (6.35)
3/8 (9.52)
Dimensions: H/W/D mm 554/800/333
Weight kg 36.4
EDP no. 1623751 1623761
1)
Air inlet temp. TK 27 °C/FK 19 °C, outside temperature TK 35 °C, FK 24 °C, max. air flow volume,
5 m pipe length
2)
Air inlet temp. TK 20 °C, outside temperature TK 7 °C, FK 6 °C, max. air flow volume, 5 m pipe length
3)
The specified value is based on results from standard testing.
The actual consumption depends on the use and location of the unit
4)
The specified value is based on the average heating period
5)
At distance of 1 m in the open air; specified values are maximum values
6)
Contains greenhouse gas per the Kyoto protocol, GWP 675 (for further information, see chapter "Adding refrigerant")
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2.2 Unit dimensions

B
C
D
A
E
A
B
C
Outdoor units
Measurements (mm) A B C D E
RVT 265-355 DC AT 800 487 333 554 300
Indoor units
Measurements (mm) A B C
RVT 265-355 DC 298 895 248
We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
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REMKO RVT series

2.3 Performance data

Cooling capacity RVT 265 DC
20 25 30
Outside temperature (TK, °C)
Inside
TK FK A B C A B C A B C
°C °C kW kW kW kW kW kW kW kW kW
20 14 2.71 2.11 0.37 2.59 2.07 0.40 2.48 2.03 0.43
22 16 2.85 2.18 0.37 2.73 2.14 0.40 2.61 2.10 0.44
25 18 3.00 2.25 0.37 2.87 2.21 0.41 2.74 2.17 0.44
27 19 3.06 2.27 0.38 2.93 2.23 0.41 2.80 2.18 0.44
30 22 3.28 2.38 0.38 3.14 2.34 0.41 2.99 2.29 0.45
32 24 3.40 2.43 0.38 3.25 2.39 0.42 3.11 2.35 0.45
Inside
TK FK A B C A B C
°C °C kW kW kW kW kW kW
Cooling capacity (A = Total, B = Sensitive, C = Power consumption)
Outside temperature (TK, °C)
35 40
Cooling capacity (A = Total, B = Sensitive, C = Power consumption)
20 14 2.33 1.96 0.47 2.29 1.97 0.50
22 16 2.46 2.03 0.48 2.41 2.04 0.51
25 18 2.59 2.10 0.48 2.54 2.10 0.51
27 19 2.64 2.11 0.48 2.59 2.12 0.52
30 22 2.82 2.22 0.49 2.77 2.23 0.52
32 24 2.93 2.27 0.49 2.87 2.28 0.52
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Heating capacity RVT 265 DC
-25 -20 -15 -10
Outside temperature (TK, °C)
Inside
TK A C A C A C A C
°C kW kW kW kW kW kW kW kW
15 2.62 1.58 2.98 1.64 3.59 1.66 3.76 1.57
18 2.58 1.60 2.94 1.67 3.54 1.68 3.71 1.59
20 2.54 1.63 2.89 1.69 3.49 1.71 3.65 1.62
22 2.49 1.64 2.83 1.71 3.42 1.73 3.58 1.63
24 2.47 1.66 2.81 1.73 3.38 1.74 3.54 1.65
25 2.44 1.67 2.78 1.74 3.35 1.75 3.51 1.66
27 2.42 1.68 2.75 1.75 3.31 1.77 3.47 1.67
Inside
TK A C A C A C A C
Heating capacity (A = Total, B = Sensitive, C = Power consumption)
Outside temperature (TK, °C)
-7 2 7 10
Heating capacity (A = Total, B = Sensitive, C = Power consumption)
°C kW kW kW kW kW kW kW kW
15 3.85 1.51 4.14 1.50 4.23 0.81 4.01 0.73
18 3.79 1.54 4.08 1.53 4.16 0.82 3.96 0.74
20 3.73 1.56 4.02 1.55 4.10 0.83 3.90 0.75
22 3.66 1.58 3.94 1.57 4.02 0.84 3.82 0.76
24 3.62 1.59 3.90 1.58 3.98 0.85 3.78 0.77
25 3.58 1.60 3.86 1.59 3.94 0.85 3.74 0.77
27 3.55 1.61 3.82 1.61 3.90 0.86 3.70 0.78
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REMKO RVT series
Cooling capacity RVT 355 DC
20 25 30
Outside temperature (TK, °C)
Inside
TK FK A B C A B C A B C
°C °C kW kW kW kW kW kW kW kW kW
20 14 3.55 2.77 0.57 3.41 2.72 0.62 3.26 2.67 0.67
22 16 3.73 2.86 0.58 3.59 2.81 0.63 3.43 2.76 0.68
25 18 3.93 2.95 0.58 3.77 2.91 0.63 3.61 2.85 0.69
27 19 4.01 2.97 0.59 3.85 2.93 0.64 3.68 2.87 0.69
30 22 4.29 3.11 0.59 4.12 3.07 0.64 3.94 3.01 0.70
32 24 4.45 3.18 0.59 4.27 3.14 0.65 4.09 3.08 0.70
Inside
TK FK A B C A B C
°C °C kW kW kW kW kW kW
Cooling capacity (A = Total, B = Sensitive, C = Power consumption)
Outside temperature (TK, °C)
35 40
Cooling capacity (A = Total, B = Sensitive, C = Power consumption)
20 14 3.11 2.61 0.73 3.02 2.59 0.78
22 16 3.27 2.70 0.74 3.18 2.68 0.79
25 18 3.45 2.79 0.75 3.34 2.77 0.80
27 19 3.52 2.81 0.75 3.41 2.80 0.80
30 22 3.76 2.96 0.76 3.65 2.94 0.81
32 24 3.90 3.03 0.76 3.79 3.01 0.81
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Heating capacity RVT 355 DC
-25 -20 -15 -10
Outside temperature (TK, °C)
Inside
TK A C A C A C A C
°C kW kW kW kW kW kW kW kW
15 2.76 1.83 3.02 1.92 3.72 1.95 3.90 1.89
18 2.72 1.86 2.98 1.95 3.67 1.98 3.84 1.92
20 2.68 1.89 2.93 1.98 3.61 2.01 3.78 1.95
22 2.62 1.90 2.87 2.00 3.54 2.03 3.71 1.97
24 2.60 1.92 2.84 2.02 3.50 2.05 3.67 1.99
25 2.57 1.93 2.82 2.03 3.47 2.06 3.63 2.00
27 2.54 1.95 2.79 2.05 3.43 2.08 3.59 2.02
Inside
TK A C A C A C A C
Heating capacity (A = Total, B = Sensitive, C = Power consumption)
Outside temperature (TK, °C)
-7 2 7 10
Heating capacity (A = Total, B = Sensitive, C = Power consumption)
°C kW kW kW kW kW kW kW kW
15 4.42 1.88 4.60 1.88 4.38 0.91 4.16 0.82
18 4.36 1.91 4.53 1.90 4.31 0.93 4.10 0.84
20 4.29 1.94 4.46 1.93 4.25 0.94 4.04 0.85
22 4.21 1.96 4.37 1.95 4.17 0.95 3.96 0.86
24 4.16 1.98 4.33 1.97 4.12 0.96 3.92 0.87
25 4.12 1.99 4.28 1.98 4.08 0.97 3.88 0.87
27 4.08 2.01 4.24 2.00 4.04 0.98 3.84 0.88
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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 series

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 of 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
f when
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 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.
, this
Fig. 1: Modern inverter technology
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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. 2: Comfort zone
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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 series

3.2 Unit description

VT series room air conditioners have a
The R 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 regulation of 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. 4: Cooling cycle diagram for outdoor unit
1: Condenser 2: Condenser fan 3: Reversing valve 4: Compressor 5: Capillary tube injection 6: Pressure gauge connection 7: Suction pipe connection valve 8: Injection pipe connection valve
Fig. 5: System layout
A: Outdoor area B: Indoor area 1: Indoor unit
Fig. 3: Cooling cycle diagram for indoor unit
1: Evaporator 2: Evaporator fan 3: Suction pipe connection 4: Injection pipe connection
2: Outdoor unit 3: Condensate drainage line 4: Condenser fan 5: Power supply cable 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.
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4 Operation

max. 8 m
1

4.1 General notes

The indoor unit is easily operated using the standard infrared remote control. The indoor unit beeps to acknowledge the correct transmission of data. If it is not possible to program the indoor unit with the remote control, then it can also be man­ually operated.
Alarms are indicated by a code (see chapter T
roubleshooting and customer service).
NOTICE!
Manual mode
The indoor unit can also be switched on manually if the infrared remote control is lost/defective. Manual operation is intended for emergency oper­ation and is not suitable for basic unit operation. Please replace the remote control. The key for manual activation is located on the right side of the unit.
The following settings apply for manual operation:
Pressing once: Automatic mode,
Pressing twice: Cooling mode,
Pressing three times: Unit OFF
Infrared remote control
The infrared remote control sends the programmed settings a distance of up to 8 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.
wo AAA batteries must be inserted into the
T 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.
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!

4.2 Indicators on indoor unit

1: Display of coded error message and target
temperature
If the display shows “CL”, the filters must be cleaned immediately
If the display shows “nF”, the filters must be
Fig. 6: Maximum distance
19
replaced. Press LED key 4 after carrying out the work to deactivate the reminder functions.
.
Page 20
OK
SET
Mode
Swing
Turbo
LED
Humidity
11
7
10
12
13
1
4
3
6
2
5
8
9
14
1
2
3
4
5
6
7
REMKO RVT series

4.3 Keys on the remote control

"Swing" key
Pressing briefly starts and stops the horizontal fin movement.
Pressing the key for 2 seconds starts and stops the vertical fin movement.
"Fan speed" key
Switches between the dif
ferent fan speeds in the
following order:
AUTO Þ20% Þ40% Þ60% Þ80% Þ100% Þ...
The fan speed can also be adjusted in 1% steps with the "Arrow up" and "Arrow down" keys.
Pressing and holding the key activates the silence function.
"Turbo" key
Activates or deactivates the turbo function to reach the setpoint as quickly as possible.
Fig. 7: Keys on the remote control
"ON/OFF" key
Switches the air conditioning unit on or of
f.
"Arrow up" key
Increases the temperature setpoint in 0.5 °C incre­ments up to the maximum setting value of 30 °C.
With the humidity function activated:
Increases the humidity setpoint in 5 % increments up to the maximum setting value of 85 %.
"SET" key
Cycles through the various additional functions at the top of the screen in the following order:
Intelligent Eye
Self clean
Fresh (ion generator)
Sleep
Follow me
Not available
"Mode" key
Switches between the available operating modes in the following order:
AUT
O Þ COOL Þ DRY Þ HEAT Þ FAN Þ...
AUTO: Automatic mode
COOL: Cooling
DRY: Dehumidification
HEAT: Heating
FAN: Recirculation mode
20
Page 21
8
1
3
2
4
a
b
c
1 m
8 m
9
10
11
12
13
"Airflow redirection" key
Activates the automatic wind direction reversal. The unit directs the airflow to a person detected in the room when the function is activated. By pressing the key again, the unit directs the airflow away from the person. The fan flaps remain in the current position. Pressing the key repeatedly deac­tivates this function. Note: If there are two or more persons/moving objects within the acquisition range of the Intelligent eye, this function cannot be used.
"Arrow down" key
Reduces the temperature setpoint in 0.5 °C incre­ments up to the minimum setpoint. Setting value of 16 °C.
With the humidity function activated:
Reduces the humidity setpoint in 5 % increments up to the minimum setpoint. Setting value of 35 %.
"eco gear" key
Switches between the available energy-saving functions in the following order:
eco Þ gear 75 % Þ gear 50 % Þ OFF Þ eco ...
eco:
the setpoint is raised to 24 °C and the fan speed is set to automatic. If the setpoint is higher than 24°C before the eco function is activated, the setpoint is not changed.
If a setpoint of < 24 °C is set, the eco function is deactivated.
gear 75 %:
inducts the power consumption to max. 75 %.
gear 50 %:
inducts the power consumption to max. 50%
1: Wall 2: Indoor unit 3: Intelligent eye 4: Acquisition range a: Left - 75° ±10° b: Centre - 30° ±10° c: Right - 75° ±10°
"OK" key
Activates or deactivates a previously selected additional function.
imer"
"T
Activates or deactivates the switch-on or switch-off delay.
"Humidity" key
Switches the control variable from room tempera­ture to relative humidity in "Dehumidification" oper­ating mode.
21
Page 22
14
10
6
1
2
3
4
5
7 8 9
11
12
13
14
1
2
2
3
4
5
6
7
8
9
10
11
12
13
14
REMKO RVT series
"LED" key
Deactivates or activates the illumination of the LED display and the signal tones of the indoor unit.
Indicators on the LCD
Horizontal swing function
Shows the position or the activated swing function of the horizontal swing slat.
ertical swing function
V
Displays the position or the activated swing func­tion of the vertical swing slats.
Not available
Turbo mode
Appears when turbo mode is activated.
Battery indicator
Indicates the remaining capacity of the remote control battery
.
eco gear
Appears when the eco gear function is activated.
Fig. 8: Indicators on the LCD
Additional functions
Displays the active additional functions.
Operating mode
Indicates the active operating mode.
TIMER OFF symbol
This symbol appears when TIMER OFF is switched on.
Data transmission
Appears when data is transmitted from the infrared remote control to the indoor unit.
T
imer
Displays the corresponding symbol when the switch-on delay (ON) or switch-off delay (OFF) is activated.
Silence
Appears when the silence function is active.
Key lock
Appears when the remote control key lock is active.
emperature indicators
T
Displays the setpoint for the temperature setting (16 °C - 30 °C) or the relative humidity (35 % - 85 %).
Fan speed symbol
This is where the selected fan speeds are dis­played: AUT
O and the five fan speed settings. The fan speed is set to "Automatic" when either "Auto" or "Dehumidification" mode is activated.
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.
22
Page 23
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
2
3
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
2
3
4
Key functions
"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 "ON/OFF" key [1] to switch on the air conditioning unit.
2. Press the "MODE" key [2] to select "Auto" mode.
3. Press the "Arrow up / Arrow down" key [3] to set the desired temperature. The tempera­ture can be set to between 16 °C - 30 °C, in increments of 1 °C.
"Cooling", "Heating" and "Recirculation" mode
Make sure that the indoor unit is connected to the power supply
, and is switched on.
1. Press the "ON/OFF" key [1] to switch on the air conditioning unit.
2. Press the "MODE" key [2] to select "Cooling", "Heating" or "Recirculation" mode.
3. Press the "Arrow up / Arrow down" key [3] to set the desired temperature. The tempera­ture can be set to between 16 °C - 30 °C, in increments of 0.5 °C.
4. Press the "F
AN" key [4] to set the desired
fan stage.
Fig. 9: "Auto" mode
Fig. 10: "Cooling", "Heating" and "Recirculation" mode
23
Page 24
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
2
3
4
REMKO RVT series
"Dehumidification" mode
1. Press the "ON/OFF" key [1] to switch on the
air conditioning unit.
2. Press the "MODE" key [2] to select "Dehu­midification" mode.
3. Press the "Humidity" key [4] to set the unit of the controlled variable to relative humidity (RH).
4. Press the "Arrow up / Arrow down" key [3] to set the desired relative humidity
. The set­point can be adjusted between 35 and 85 % in 5 % increments.
Fig. 11: "Dehumidification" mode
In the “Dehumidification” mode, manual selec­tion of the fan speed is not possible! Please note that temperature pre-selection is not pos­sible and the dehumidified room can cool dra­matically!
"Timer" mode
Press the "TIMER" key to set the "switch-on time" and the "switch-of
f time" for the unit.
Setting the "switch-on time"
The air conditioning unit has two different timer modes:
Timer ON determines the time after which the unit automatically switches itself on.
Timer OFF determines the time after which the unit automatically switches itself off.
Activate the "Timer on" function by pressing the Timer key [1]. The Timer ON symbol now appears on the display. Use the "Arrow up" and "Arrow down" keys [2] to select the desired switch-on time. The function activates itself after one second.
The target temperature and the Timer ON symbol now appear on the display again as confirmation of the function.
Activate the "Timer OFF" function by pressing the Timer key [1] twice. The "Timer OFF" symbol now appears on the display.
Use the "Arrow up" and "Arrow down" keys [2] to select the desired switch-off time. The function activates itself after one second.
The temperature and the Timer ON symbol now appear on the display again as confirmation of the function.
Both functions can also be used together. For example, if the unit is to switch on in 6 hours and switch off two hours later, proceed as follows:
Press the Timer key [1] and ensure that the Timer ON symbol illuminates. Press the "Arrow up / Arrow down" keys [2] until "6.0h" appears on the display. Now press the Timer key [1] again. The Timer OFF symbol should appear on the display. Use the "Arrow up / Arrow down" keys [2] to set the time to 8.0h and then wait one second for the func­tions to activate themselves automatically.
Times which have already been set can be changed. To do this, select either Timer ON or Timer OFF mode and change the time using the "Arrow up / Arrow down" keys [2]. Please note that this delay is then activated from the current point in time, not the point in time when the original pro­gramming took place!
Delays which have already been programmed can be deactivated by reducing the time to 0.0h in the respective menu (Timer ON or Timer OFF).
24
Page 25
When the switch-on and switch-off times are
OK
SET
Mode
Swing
Turbo
LED
Humidity
2
1
Start
Off
2 hours laterSet time
Stop
On
4 hours laterSet time
being set, this can be done at 30 minute inter vals for the first 10 hours, and at hourly inter­vals thereafter. The maximum switch-on or switch-off delay is 24 hours.
Examples of TIMER function settings
"TIMER ON" (Auto on mode)
-
Example:
Y
ou want the air conditioning unit to switch on 2
hours from the time it was programmed.
1. Press the "TIMER" key
. 0.0h and the "Timer
ON" symbol now appear on the display.
2. Press the "Arrow up" or "Arrow down" key until the desired start time appears in the "TIMER ON" area of the remote control.
3. W
ait for 3 seconds and the temperature appears again in this area of the digital dis­play. The "TIMER ON" indicator stays lit, and this function is activated.
Fig. 12: "Timer" mode
When T
imer mode is selected, the remote control automatically transfers the timer signal to the indoor unit for the specified period of time. Therefore, you should hold the remote control in a location where it can transfer the signal to the indoor unit without interference.
The effective operation for the time settings
by the remote control for the timer function is restricted to the following settings:
0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,
5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24.
Fig. 13: "TIMER ON" example
"TIMER OFF" (Auto off mode)
Example:
ou want the air conditioning unit to switch off 4
Y hours from the time it was programmed.
1. Press the "TIMER" key twice. 0.0h and the imer OFF" symbol now appear on the dis-
"T play.
2. Press the "Arrow up" or "Arrow down" key
until "4h" appears in the "TIMER OFF" area of the remote control.
3. W
ait for 3 seconds and the temperature
appears again in this area of the digital dis­play. The "TIMER OFF" indicator stays lit, and this function is activated.
Fig. 14: "TIMER OFF" example
25
Page 26
Off
Set time
Stop
Start
2 hours later after setting
5 hours later after setting
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
3
2
REMKO RVT series
Combined TIMER (setting "TIMER ON" and "TIMER OFF" at the same time)
"TIMER OFF ð "TIMER ON"
(On ð Stop ð Start)
Example:
Y
ou want the air conditioning unit to switch off in two hours from the time it was programmed, and switch back on ten hours later.
1. Press the "TIMER" key.
2. Press the "Arrow up" or " Arrow down" key
until "10h" appears on the display.
3. Press the "TIMER" key.
4. Press the "Arrow up" or " Arrow down" key
until "2h" is displayed.
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.
BioClean
When the BioClean function is activated, nega­tively charged ions are added to the airflow to bind the particles contained in the air
. The bundled par­ticles then fall to the ground and can be filtered out of the air more easily.
Sleep
The sleep function can be used to save energy during night operation. When the sleep function is activated, the temperature setpoint is regularly reduced (cooling mode) or increased (heating mode).
Follow me
The "Follow me" function activates the temperature detection of the infrared remote control. The actual temperature is then transmitted to the indoor unit every 3 minutes. Note: In order for the temperature to be transmitted by the infrared remote control at all times, there must be visual contact between the infrared remote control and the indoor unit at all times.
Fig. 15: "TIMER OFF"/"TIMER ON" example
Additional functions
With the "Set" key [1], the following additional func­tions can be activated when the unit is switched on:
Intelligent Eye
If this function is activated, the unit monitors the presence of people in the room with the help of the motion sensor
. If there is no person in the room for 30 minutes, the energy saving function is activated and the compressor frequency is automatically reduced. As soon as a person enters the room, the energy-saving function is deactivated again.
Self Clean
When the Self Clean function is activated, the indoor unit automatically cleans the heat exchanger to prevent mould and odour formation. The cleaning process can take up to 45 minutes. "CL" is shown on the unit display during the process.
AP function
Function not available
The desired function can then be selected with the "Arrow up / Arrow down" keys [2] and confirmed with the "OK" key [3].
Fig. 16: Additional functions
26
Page 27
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
2
3
OK
SET
Mode
Swing
Turbo
LED
Humidity
1
2
Frost protection function
The frost protection function keeps the room air temperature above 8°C to prevent damage to the building structure.
1. Press the "ON/OFF" key [1] to switch on the air conditioning unit.
2. Press the "MODE" key [2] to select "Heating" mode.
3. Press the "Arrow down" key [3] until the temperature setpoint is at 16 °C. Then press the "Arrow down" key [3] twice within one second to activate the frost protection func­tion
Key lock
The frost protection function keeps the room air temperature above 8°C to prevent damage to the building structure.
Press the "T
urbo" key [1] and the
"Humidity" key [2] at the same time for 5
seconds to activate and deactivate the key lock.
Fig. 17: Frost protection function
Fig. 18: Activate / deactivate key lock
27
Page 28
21 5
3 4
REMKO RVT series

5 Installation instructions for qualified personnel

5.1 Important notes prior to instal­lation
ransport the unit in its original packaging as
n T
close as possible to the installation location. You avoid transport damage by doing so.
n Check the contents of the packaging for com-
pleteness and check the unit for visible trans­port damage. Report any damage immediately to your contractual partner and the shipping company.
n Lift the unit on the corners and not on the
refrigerant or condensate drainage connec­tions.
n The refrigerant piping (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 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.
o prevent damage to the lines, the interior of
n T
the wall opening should be padded or, for example, lined with PVC pipe (see figure).
n After installation has been completed, use a
suitable sealing compound to close off the wall opening, taking account of fire protection regu­lations (responsibility of customer). Do not use cement or lime containing substances!
Fig. 19: Wall opening
1: Liquid line 2: Control line 3: Condensate drainage line 4: Suction pipe 5: PVC pipe

5.3 Installation materials

The indoor unit is attached 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.

Layout, 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. 2.0 m above the floor).
The minimum room size must be 4 m2.
This varies according to the total fill quantity of the system. Observe the valid DIN standards for the calculation!
28
Page 29
5.5 Installation, mounting
1
20 cm
1
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 lation 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. 20). The snow line is to be observed during installation (Fig. 21).
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 tray ensures that con-
densation 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.
n The outdoor unit must always be installed out-
doors. Do not install the outdoor unit in enclosed rooms, including basement and window shafts.
n During installation, add about 20 cm to the
expected snow depth to guarantee unimpeded intake and exhaust of outdoor air year round (Fig. 21).
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.
. The instal-
Fig. 20: 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. 21: Protection from snow
1: Snow
.
29
Page 30
REMKO RVT series
Assessment level in accordance
with T
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.
A 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 dif
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!
fer as
30
Page 31

5.6 Minimum clearances

b
a
E
C
A
B
F
1
b
a
A
B
C
D
E
2
D
C
D
B
A
C
A
B
Observe the minimum clearances to allow access for maintenance and repair work and facilitate optimum air distribution.
1: Indoor unit (IT) 2: Outdoor unit (AT)
a: Air inlet b: Air outlet
Measurements (mm)
A B C D E F
RVT 265-355 DC IT 120 1500 120 - 150 2000
RVT 265-355 DC AT 300 2000 600 300 600 -

5.7 Connection variants for the indoor unit

The following connection variants can be used for the refrigerant, condensate and control lines.
Fig. 22: Connection variant (view from the rear)
A: Infeed of the refrigerant piping at the wall, left B: Infeed of the refrigerant piping through the wall,
left
C: Outlet through the wall, right D: Outlet at the wall, right (the refrigerant piping
must be bent through 180 degrees for this)
NOTICE!
A flare connection may only be established outside the room. Detachable, reusable connections are not permissible inside!
31
Page 32
1
A
B
2
REMKO RVT series

5.8 Oil return measures

If the outdoor unit is installed at a higher level than the indoor unit, suitable oil return measures must be taken. Usually every 7 metres of height difference.
, an oil pump bend is installed for
Fig. 23: Oil return measures
A: Outdoor unit B: Indoor unit 1: One oil pump bend in suction pipe to outdoor
unit every 7 metres of height dif 50 mm
2: Max. 20 m
ference, radius:
32
Page 33
5.9 Connection of the indoor unit when the refrigerant piping is installed
A
A
895mm
435mm
435.5mm
217mm
460mm
242.5mm
45mm
150mm
258mm
65mm
232.5mm
45mm
45mm
65mm
298mm
1
under the plaster
If the customer routes the refrigerant piping to the unit underneath the plaster, observe the following note. The principal connection options can be found in the "Connection variants for the indoor unit" and "W bracket" chapters.
If the refrigerant piping is routed underneath the plaster, ensure that the customer-fitted refrigerant piping does not protrude from the wall at a 90° angle. As a result of the required bending radius, the unit would then be very difficult to connect or would possibly be impossible to fasten to the wall mount.
For this reason, route the customer-fitted refrigerant piping with as flat an angle as possible (<30°) out of the wall, from the left and into the unit. (see Fig. 24).
all
Fig. 24: Under the plaster installation (View from above)

5.10 Wall bracket of the indoor units

Fig. 25: Wall bracket mounting points RVT 265-355 DC (rear view)
1: Indoor unit (outline) A: Wall opening
33
Page 34
B
A
B
REMKO RVT series
Fig. 26: Wall bracket alignment RVT 265-355 DC
A: Correct alignment B: Incorrect alignment

6 Installation

Installation of the indoor unit

6.1
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
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. (
, remove the break out opening
.
Fig. 27)
Fig. 27: Horizontal positioning
The wall bracket for the units must be attached with suitable screws and anchors.
34
Page 35
6.2 Connecting the refrigerant
piping
The refrigerant piping is connected (responsibility of the customer) on the back side of the units.
Please note that a flare connection is only permis­sible outside the enclosed room. If this is not pos­sible on site, the connection of the indoor unit must be established as a permanent connection (e.g. soldered).
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 dif
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.
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!
fusion proof.
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 "T
2. Install the indoor unit and connect the refrig­erant piping as described in the operating manual for the indoor unit.
3. Use the wall or floor brackets to fit the out­door unit against structural parts approved to support the static load (refer to the installa­tion instructions for the brackets).
4. Ensure that structure-borne sound is not transferred to parts of the building. Use vibra­tion dampers to reduce the ef ture-borne sound!
5. Lay the refrigerant piping from the indoor unit to the outdoor unit. Ensure that the fasten­ings are adequate and if necessary appropriate oil return measures!
6. Remove the factory-fitted protective caps and union nuts on the connections. These should be used later in the installation process.
7. Before flanging the refrigerant piping, ensure that the union nut is fitted on the pipe.
8. Prepare the laid refrigerant pipings as shown below (
9. V (Fig. 30).
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. 31).
12. Use insulation hoses which are designed for this temperature range and are dif proof.
13. Observe the permitted bending radius for the refrigerant piping during installation. Never bend a pipe twice in the same place. Brittle­ness and cracking can result.
14. Apply appropriate heat insulation to the installed refrigerant piping, including con­nector
15. T for all subsequent refrigerant piping.
echnical data".
fects of struc-
, take
Fig. 28 and Fig. 29).
erify that the shape of the flange is correct
fusion
.
ake the same action at the shut-off valves
35
Page 36
2
1
1
REMKO RVT series
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 af 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.
filiation of the
Fig. 29: Flanging the refrigerant piping
1: Flanging tool
Fig. 28: Deburring the refrigerant piping
1: Refrigerant piping 2: Deburrer
Fig. 30: Correct flange shape
36
Page 37
2
1
Fig. 31: 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
Tightening torque
in Nm

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!
,
3/8" 33-40
1/2" 50-60
5/8" 65-75
3/4" 95-105

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 dif vided 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").
fer. Install the pro-
The time required to generate the vacuum is dependent on the final pressure pipe volume of the indoor units and the length of the refrigerant piping. However minutes. Once any foreign gases and humidity have been completely extracted from the system, the valves on the pressure gauge station are closed and the valves on the outdoor unit are opened as described in the "Commissioning" sec­tion.
, the process will take at least 60
37
Page 38
3
2
4
9
5 5
11
100
6
8
7
10 10
12 12
1
REMKO RVT series

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 265 DC
0 g/m 20 g/m
RVT 355 DC
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
7 Condensate drainage
connection and safe drainage
NOTICE!
Check the overheating to determine the refrig­erant fill quantity
NOTICE!
The escape of refrigerant contributes to climatic change. In the event of escape, refrigerant with a low greenhouse potential has a lesser impact on global warming than those with a high greenhouse potential. This unit contains refrigerant potential of 675. That means the escape of 1 kg of this refrigerant has an effect on global warming that is 675 times greater than 1 kg CO2, based on 100 years. Do not conduct any
work on the refrigerant circuit or dismantle the unit - always enlist the help of qualified experts.
.
Fig. 32: 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
with a greenhouse
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
38
Page 39
EB
B
A
D
C
11
1
5
5
8
1
9
3
Fig. 33: Dimensions for the strip foundation (bird's
min. 2%
eye view)
For the designations of 1,3,5,8,9 and 11, please refer to the legend for Fig. 32
dimensioning of the strip foundation (in mm)
Dime nsio n RVT 265-355 DC
Fig. 34: 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!
A 800
B 200
C 514
D 298
Local regulations or environmental laws, for example the German W
ater 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.
E 287
NOTICE!
Condensate drainage connection
If the temperature falls below the dew point, con­densation will form on the finned condenser during
heating mode.
If condensate is removed via a duct in accord­ance with DIN EN 1717, ensure that any micro­biological contamination present on the waste­water side (bacteria, fungi, viruses) cannot enter the unit connected to it.
A condensate tray should be installed on the underside of the unit to drain any condensate.
n The condensate drainage line 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 °C, ensure the condensate drainage line 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.
39
Page 40
A
B
REMKO RVT series

8 Electrical wiring

8.1 General Information

A protected power supply cable is to be connected to the outdoor unit and a five-core 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 of the units must be carried out in accordance with VDE regulations.
e recommend using an FI circuit breaker that
W is sensitive to all currents, as increased leakage currents can occur.
.
.

8.2 Connecting the indoor unit

e recommend that a mains/repair switch be
n W
installed near the outdoor unit.
n The terminal blocks for making the connections
are located on the front of the unit. Two covers must be removed to make a connection.
n If an optional condensate pump is used as an
accessory in conjunction with the unit, it may be necessary to install an additional relay with a higher contact rating after the switch-off con­tact on the pump to switch off the compressor.
Make the connection as follows:
1. Swivel the panel of the unit upwards.
2. Remove the screw [A] and remove the cover
.
e recommend using shielded wires for the
W control lines.
Check all plugged and clamped terminals to verify that they are seated correctly and make permanent contact. T
ighten as required.
3. Now remove the screw [B] and remove the cover from the terminal block.
4. Connect the customer-laid control line to the terminals [C].
40
Page 41
C
BA
230V/1~/50 Hz
L N PE W 1(L) 2(N) S 2(N) S PE PE
2
1
W 1(L)

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.
4. Fix the line in the strain relief and re­assemble the unit.
.
5. Screw the two covers in place and close the front flap.

8.4 Electrical wiring diagram

Connection RVT 265-355 DC
Fig. 35: Connecting the outdoor unit
Fig. 36: Electrical wiring diagram
A: Outdoor unit RVT 265-355 DC AT B: Indoor unit RVT 265-355 DC IT
41
1: Power supply cable
Page 42
L N PE
L N PE
L
N
WH
BK
PE
A
B
C
1
2
3
W 1(L) 2(N) S
PE
W 1(L) 2(N) S
REMKO RVT series
2: Communication line
Connection of optional condensate pump KP 6/KP 8
Fig. 37: Electrical wiring diagram
A: Outdoor unit B: Indoor unit C: KP6/KP8 condensate pump 1: Power supply cable
2: Condensate pump supply 3: Condensate pump fault contact BK: black WH: white
42
Page 43

8.5 Electrical drawings

21 4
3
5 6 7
8
9
11
12
13
14
15
16
17
A
B
5
M
CN21
YELLOW
RED
M
CN20
ION
CN224
OPTIONAL
M
5(3 or 2)
CN3
N-IN
CN5
CN6
2
RY1
L-OUT
L-IN
BLUE(BLACK)
OPTIONAL
CN10
4
2
OPTIONAL
USB
OPTIONAL
CN3
CN225
5
CN2
CN4
CN1
CN40
CN43
CN32
2
CN42
CN41
CN45
CN46
CN44
X Y
E 12V/5V
HA HB
4
3
3
CN221
OPTIONAL
JX1
W
2(N)
S
CN7
OPTIONAL
2
M
CN8
5(10)
1(L)
WHITE
CN5
CN6
2
OPTIONAL
5
5
JX1
P1_1
Y/G
ION
2
OPTIONAL
2
CN108
2
ON1ON
OPTIONAL
S1
S2
OPTIONAL
OPTIONAL
OPTIONAL
LANOITPO
LANOITPO
OPTIONAL
M
OPTIONAL
C
D
E
10
Indoor units RVT 265-355 DC IT
Fig. 38: Electrical drawings RVT 265-355 DC IT
A: Indoor unit B: Outdoor unit C: Control board D: Multifunction board E: Display circuit board 1: Ion generator (optional) 2: AC fan motor connection 3: Fan motor 4: Capacitor 5: Swing motor 1 6: Swing motor 2 (optional)
43
7: Swing motor 3 (optional) 8: Connection to the outdoor unit 9: Smart-Control Touch SC-1 connecting facility 10: Potential-free alarm contact 11: Potential-free “On/Off” contact 12: Room temperature probe 13: Probe, evaporator 14: Room temperature probe 15: Cabled remote control 16: Infrared probe 17: Humidity probe
Page 44
1
2
3
(RED)
BLACK
(BLACK)
CN2
CN7
CN8
CN60
Y/G
RED
BLUE
BLACK
65
BLUE
BLACK
RED
CN13
CN12
CN18
CN414
BLUE
BLUE
U
V
Y/G
CN6-1
1(L)
2(N)
S
L
N
BLACK(BLUE)
W
OPTIONAL
CN16
OPTIONAL
OPTIONAL
CN4
BROWN
BLUE
YELLOW
RED
3
BROWN
BLUE
CN5
CN3
CN30
W
Y/G
LANOITPO
LANOITPO
CN10
CN1
CN17
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL
Y/G
U
V
W
RED
BLUE
BLACK
M
M
2
1
4
3
5
6
7
8
9
11
12
13
A
10
REMKO RVT series
Outdoor units RVT 265-355 DC AT
Fig. 39: Electrical drawings RVT 265-355 DC AT
A: Control board 1: Heater condensate tray 2: Crankcase heating, compressor 1: Compressor 2: Supply line to the indoor unit 3: 4-way valve 4: DC fan motor (not available) 5: AC fan motor
6: Capacitor 7: Compressor 8: Connection to indoor unit 9: Power supply cable 10: Electric expansion valve 11: Outside air probe 12: Condenser probe 13: Heat gas probe
44
Page 45

8.6 Connection of a superordinate controller

3
1
4
2
65
1
2
3
4
5
6
Units of type RVT have a multifunction PCB installed in the panel of the unit which has various connecting facilities for superordinate controllers.
Connecting facilities of the multifunction PCB
Fig. 40: Connection terminals
F1: Extended address allocation
Addresses 00-15 can be allocated using rotary switch ENC1 if both F1 DIP switches are set to “OFF”. Move DIP switches 1 and 2 to different positions to allocate up to 64 addresses.
F2: Function logic of the On/Off contact
If both F2 DIP switches are set to “OFF”, the system starts up when the CN46 contact is closed. If the CN46 contact is opened the system switches to standby
. If the CN46 contact is closed again, the system operates
in the most recently used operating mode.
CN46: Potential-free contact for external on/off switching
Bridged in the factory
. If the contact is closed, the system is in normal operation. If the contact is opened the system switches to standby mode. Closing the contact again switches the system to the most recently used operating mode.
ENC3: Addressing of the indoor unit
An address can be assigned to the indoor unit using the rotary switch. The address is set to “00” in the fac­tory
. If you use several units with a Smart Control Touch Controller, they must be set to different addresses.
The letters A-F stand for addresses 10-16.
CN41/CN42: X, Y
, E interface for superordinate controller
A superordinate controller (such as a mart-Control Touch SC-1) can be connected using the X, Y and E inter­face. Observe the installation and operating instructions of the respective accessory part when doing this.
CN45: Potential-free alarm contact
In the event of a system malfunction, this contact is closed. Customer-provided unit control technology (GL can be connected here to provide fault notification.
T)
45
Page 46
Start/Stop
Alarm
RVT Innenteil (A) RVT Innenteil (B)
CN46 CN45
Start/Stop
Alarm
CN46 CN45
BUS connection
RVT indoor unit (A) RVT indoor unit (B)
ERR = Contact OK = Contact
Output 1 Output 2 Output 3
Input 1 Input 2 Input 3
Enable
Probe
ON
OFF
REMKO RVT series
Electrical wiring for optional KFB-R redundancy controller
Fig. 41: Elektrisches Anschlussschema KFB-R
When establishing the connection between the unit series RVT 265-355 DC and the redundancy control KFB-R, the "InF" parameter of the redundancy control must be set to 1.
46
Page 47

9 Before commissioning

After leak testing has been successfully com­pleted, connect the vacuum pump via the pressure gauge station to the valve connections on the out­door unit (see chapter "Leak testing") and create a vacuum.
Perform the following checks prior to putting the unit into operation for the first time and after any work on the cooling cycle. Record the results in the commissioning report:
n Check all refrigerant piping and valves for leak-
tightness using leak detection spray or soapy water
.
n Check the refrigerant piping and insulation for
damage.
n Check the electrical connection between the
indoor unit and the outdoor unit for correct polarity.
n Check that all fastenings, mountings, etc. are
firm and at the correct level.

10 Commissioning

NOTICE!
Commissioning should only be performed by specially trained personnel and documented after the certificate has been issued. Observe the operating manuals for the indoor unit and outdoor unit when commissioning the entire system.
Once all the components have been connected and tested, the system can be put into operation. A functional check should be performed to verify its correct function and identify any unusual operating behaviour prior to handing it over to the operator
NOTICE!
Check that the shut-of are tight after carrying out any work on the cooling cycle. Use appropriate sealant products as necessary.
Functional checks and test run
Check the following points:
f valves and valve caps
.
n Leak-tightness of the refrigerant piping. n Compressor and fan running smoothly. n In cooling mode, cold air output by the indoor
unit, and warm air output by the outdoor unit.
n Function test of the indoor unit and all program
sequences.
n Check of the surface temperature of the suc-
tion pipe and that the vaporiser is not over­heating. To measure the temperature, hold the thermometer to the suction pipe and subtract the boiling point temperature reading on the pressure gauge from the measured tempera­ture.
n Record the measured temperatures in the
commissioning report.
47
Page 48
REMKO RVT series
Function test of the cooling and heating modes
1. Remove the protective caps from the valves.
2. Start the commissioning procedure by briefly
opening the shut-of unit until the pressure gauge indicates a pressure of approx. 2 bar.
3. Check all connections for leaks with leak detection spray and suitable leak detectors.
4. If no leaks are found, fully open the shut-of valves by turning them anti-clockwise using a spanner. If leaks are found, remedy the faulty connection. It is imperative that the vacuum creation and drying steps are repeated.
5. Activate the main circuit breaker or fuse (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". T
imer, 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 ommended 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.
f valves on the outdoor
f
. A bottle with a spout is rec-
48
Page 49

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 in the list below. For systems with an indoor unit and outdoor unit, refer to the chapter "Troubleshooting and customer service" in both operating manuals. Please inform your dealer if the unit is still not working correctly after all function checks have been performed!
Operational malfunctions
Malfunction Possible causes Checks Remedial measures
, if alarms should occur, please check the functions as detailed
The unit does not start or switches itself of
f
Power failure, under­voltage, defective mains fuse / main switch in OFF position
Damaged power supply Does all other elec.
Wait time after switching on is too short
Temperature outside operating range
Electrical surges caused by thunderstorms
Malfunction of the external condensate pump
Transmission distance too far / receiver af by interference
fected
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?
Does the indoor unit beep when pressing a key?
Check the voltage and if necessary come back on
Repair by specialist firm
Schedule longer wait times
Observe temperature ranges of indoor unit and outdoor unit
Switch off the mains breaker and switch it back on. Have it inspected by a specialist
Check and if necessary clean the pump
Reduce the distance to less than 6 m or change position
, wait for it to
Defective remote control Is the unit running in
manual mode?
Receiver or transmitter unit exposed to exces-
The unit does not respond to the remote control
The unit works at reduced or no cooling capacity
49
sive solar radiation
Electromagnetic fields are interfering with trans­mission
Key in remote control jammed / two buttons pressed at same time
Batteries in remote con­trol are flat
Filter is dirty / air inlet / outlet opening is blocked by debris
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?
Have the filters been cleaned?
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
Clean the filters
Page 50
REMKO RVT series
Malfunction Possible causes Checks Remedial measures
Condensate discharge on unit
Windows and doors open. Heating / cooling load has increased
Cooling mode is not set Does the cooling symbol
Fins on outdoor unit blocked by foreign objects
Leaking cooling cycle Are there signs of frost
Drainage pipe on collec­tion container clogged / damaged
Faulty external conden­sate pump or float
Condensate has not drained away and has collected in the conden­sate drainage line
Have structural / usage modifications been made?
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?
Can the condensate drain of obstruction?
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.
f without any
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
Clean the drainage pipe and collection container
Call out a specialist to replace the pump
Route the condensate drainage line with an incline and clean.
Condensate does not drain of
NOTE
If the outdoor unit makes noises at low outside temperatures, even although it is switched off, this is not a malfunction. This is the winding of the compressor being run briefly in order to heat up the oil within it and also to guarantee the viscosity at low ambient temperatures. If you do not use the unit in the winter then you can switch off the breaker will be required!
f
. Switch it back on again at least 12 hours before the next time that the unit
Are the condensate drainage lines unblocked and is there a steady incline? Are the conden­sate pump and liquid level switch functioning correctly?
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
50
Page 51
Fault display on the indoor unit
YES
Display Error description
E0 EEPROM error, indoor unit
E1 Communication error between indoor unit and outdoor unit
E3 Fan speed control indoor unit disabled
E4 Room temperature probe T1 defective
E5 Temperature probe, evaporator T2 defective
F0 Overflow protection
F1 Temperature probe air inlet outdoor unit T4 defective
F2 Temperature probe, evaporator outlet T3 defective
F3 Temperature probe, heat gas line T5 defective
F4 EEPROM error, outdoor unit
F5 Condenser fan speed control probe not working
P0 Compressor actuation error
P1 Over-voltage or under-voltage error
P2 Compressor overheating protection (heat gas temperature too high)
P4 Inverter control disabled
EC No cooling capacity after 30 minutes
dF Defrosting
CP No external release
CL Self-cleaning function active
For fault elimination refer to troubleshooting on the following pages.
1

1.2 Indoor unit fault analysis

Error code: E0/F4
Reason: The control board of the outdoor unit or indoor unit cannot read the unit memory
(EEPROM)
Cause:
n Installation error n Control boards of outdoor unit or indoor unit defective
Switch off voltage, switch on again 2 minutes
later
. Is the error still present?
Replace the circuit boards of the outdoor unit
and indoor unit in turn, in order to locate the
defective EEPROM
51
Page 52
YES
NO
YES YES
YES
NO
NO
YES
NO
REMKO RVT series
Error code: E1
Reason: The indoor unit does not receive a signal from the outdoor unit within 110 seconds. The
check is performed 4 times in a row
, then error E1 is displayed.
Cause:
Switch off voltage, switch on again 2 minutes
later
Measure the voltage between the “S” and “N”
terminals of the outdoor unit. Does the valve
fluctuate between -25 V and 25 V?
Check electrical connections in the outdoor
n Electrical connection not configured correctly n Control boards outdoor unit or indoor unit defective
. Is the error still present?
unit. Are they OK?
Is the transformer OK?
Check electrical connections in the indoor unit.
Are they OK?
Replace the control boards of the indoor unit. Is
the error rectified?
Replace the control boards of the outdoor unit
Replace the transformer
Replace the control boards of the outdoor unit.
Is the error rectified?
Replace the control boards of the indoor unit
Fig. 42: Transformer measurement
Check the transformer (must not be connected to a condenser) with a multimeter approx. 0 Ohm. If the value deviates, replace the transformer.
. The normal value is
52
Page 53
Error code: E3/F5
NO
YES
NO
YES
NO
YES
NO
YES
NO
Reason: If the fan speed of the indoor unit/outdoor unit falls below 300 rpm, the unit switches off
and the display shows error code E3 or F5
Cause:
Switch off voltage, switch on again 2
minutes later
De-energise the unit and attempt to
turn the fan wheel by hand. Does it
Check the electrical connections.
Are these correctly implemented?
Measure the voltage at the corre-
sponding connector plug on the con-
trol board (see section
dure’ on page 54). Does the
measured voltage lie within the toler-
n Electrical connection faulty n Evaporator fan wheel defective n Evaporator fan motor defective n Control board faulty
. Is the error still
present?
rotate freely?
Ä
‘Proce-
ance range?
The unit operates normally.
Check the motor and the fan
wheel bearing, and replace the
defective parts.
Correctly establish the electrical
connection
Replace the control board.
Replace the fan motor. Is the error
rectified?
53
Page 54
1 3 4 5 6
REMKO RVT series
Procedure
DC fan motor of the indoor unit (control chip is installed in the motor):
Switch on the voltage to the unit. In standby mode, measure the unit between terminals 1-3 and 4-3 of the connector plug. Check the measured values against those listed in the table below problem with the control board and it must be replaced.
. If these differ, there is a
Fig. 43: Motor measurements
Terminal Colour Voltage
1 Red 280V~380V
2 --- ---
3 Black 0 V
4 White 14-17.5V
5 Yellow 0~5.6V
6 Blue 14-17.5V
DC fan motor of the outdoor unit (control chip is installed in the motor):
Measure the resistance between terminals 1-3 and 4-3. This should be roughly identical. If the resistance deviates significantly, assume that the motor is defective and must be replaced.
54
Page 55
Error code: EC
YES
JOO
NO YES
JOO
NO
Reason: The evaporator probe T2 measures the actual value with the compressor start and takes
this as the reference value T has not dropped by 2 °C for at least 4 seconds then the system assumes that the refrig-
erant is low error code "EC".
. The measurement is performed a total of 3 times before the display shows the
. If, 8 minutes after the compressor start, the value T
Start
Start
Cause:
Switch off voltage, switch on again 2 minutes
later. Is the error still present?
Check whether the indoor unit blows out cold
Check the cooling circuit for leaks. Did you find
Check the cooling circuit for any blockages. Are
the shut-of
n Refrigerant low or cooling circuit blocked n Evaporator probe T2 defective n Indoor unit control board defective
.
air
a leak?
f valves on the outdoor unit open?
Check the position and function of the evapo-
rator probe T2. Is it correctly seated and with
the correct resistance?
Exchange the control boards of the indoor unit.
Remedy leaks and put the unit back into opera-
tion.
55
Page 56
NO
YES
NO
YES
REMKO RVT series
Error code: E4 / E5 / F1 / F2 / F3
Reason: If the test voltage of the probes is lower than 0.06 V or higher than 4.94 V then the display
shows the error code of the corresponding probe.
Cause:
Check the connecting cable between the con-
trol board and the temperature probe. Is it OK
Check the probe for correct resistance,
depending on the temperature (see resistance
Replace the corresponding control board.
n Electrical connection faulty n T
emperature probe defective
n Control board defective
and correctly connected?
table)
Establish a proper connection.
Replace the probe.
Fig. 44: Check the probes
56
Page 57
Error code: F0
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Reason: Safety shutdown due to overly high current consumption of individual unit components
Cause:
Check the supply voltage. Is this correct?
Check the cooling circuit for any blockages. Is
Check the winding resistances of the com-
Check the electrical connections. Are these cor-
n Faulty power supply n Cooling circuit blocked n Faulty control board n Electrical connections faulty n Compressor defective
the cooling circuit OK?
pressor
. Are they OK?
rectly implemented?
Switch the unit off and ensure correct supply
voltage.
Remove the blockage (shut-off valve open?)
Replace the compressor.
Replace or correct the electrical connections.
Does the transformer operate fault-free? (See
Ä
on page 52)
Replace the outdoor unit.
Replace the transformer or control boards of
the outdoor unit.
57
Page 58
JOO
NO
NO
YES
NO
YES
NO
YES
REMKO RVT series
Error code: P0
Reason: If the power supply to the compressor controller is faulty, the display shows the error code
“P0” and the unit switches of
f
Cause:
Check the connecting cables between the con-
trol board and compressor? Are they faulty?
Check the inverter controller (see section
Ä
‘Check the inverter controller’ on page 58).
Check the condenser fan motor. Is it working
Check the winding resistances of the com-
n Electrical connection faulty n Faulty control board n Condenser fan motor defective or blocked n Compressor defective
Error rectified?
correctly?
pressor
. Are they OK?
Establish a correct connection between the
control board and compressor
Replace the control board.
See troubleshooting fault F5
Replace the compressor.
.
Exchange the control boards of the outdoor
unit.
Check the inverter controller
Switch off the power supply to the unit. Wait until the capacitors are fully discharged and disconnect the com­pressor from the control board.
Check the resistances at the outputs of the control board with the aid of a digital voltmeter as follows:
Voltmeter Normal resistance
(+) Red (-) Black RVT 265 DC RVT 355 DC
U
V
N
W
(+) Red
2.35 W
(20°C/68°F)
1.57 W
(20°C/68°F)
58
Page 59
Error code: P1
NO
YES
NO
YES
NO
YES
NO
YES
Reason: Overvoltage or undervoltage protection has tripped
Cause:
Check the power supply. Is the supply voltage
Check the electrical connections. Are they OK?
Switch the power on and put the unit into
standby mode. Measure the voltage on the
board, at contacts "P" and "N". This should be
approx. 310V
unit. The voltage between "P" and "N" should
now be between 220-400V. Is the correct
Check the transformer. Is a defect present?
n Faulty supply voltage n Refrigerant low or cooling circuit blocked n Faulty control board
correct?
, 340V or 380V DC. Now start the
voltage applied?
Switch the unit off and have the power supply
checked/corrected.
Replace the electrical connections.
Replace the control board.
Replace the control board.
Replace the transformer.
59
Page 60
JOO
NO
YES
NO
YES
NO
YES
YES
NO
JOO
REMKO RVT series
Error code: P2 (with units with a thermal contact)
Reason: If the test voltage of the thermal contact does not lie at 5 V, then the display shows the
error message “P2”
Cause:
Check the air flow
volumes of the
indoor unit and out-
door unit. Are they
blocked or dirty?
Switch off the power
supply to the unit
and switch it on
again after 10 mins.
Does the unit start
up?
Check the tempera-
ture of the com-
pressor
heated up?
n Faulty supply voltage n Refrigerant low or cooling circuit blocked n Faulty control board
. Has it
Clean the filter or heat exchanger and ensure a sufficient air flow volume.
Check the thermal contact. Is it correctly connected?
Measure the resistance of the thermal contact.
Is it 0?
Connect it correctly.
Check the cooling circuit. Is this OK?
Replace the thermal
contact.
Replace the control board of the outdoor unit.
60
Page 61
Error code: P4
JOO
NO
NO
YES
NO
YES
NO
YES
1
Reason: Safety shutdown of inverter controller. Internal system monitoring triggered (e.g. communi-
cation problem between board and compressor
, the compressor speed is not OK)
Cause:
Check the electrical connection between the
control board and compressor
Check the inverter controller. Is this functional?
Check the condenser fan motor. Is this OK?
Check the winding resistances of the com-
n Faulty electrical connections n Inverter regulation on board defective n Condenser fan motor defective n Compressor defective n Control board defective
. Are these cor-
rectly implemented?
pressor
. Are they OK?
Establish a proper connection.
Replace the control board.
Follow the instructions for troubleshooting fault
F5
Replace the compressor
Replace the control boards of the outdoor unit.
Check the individual components. Check the temperature probes
Disconnect the temperature probe from the control board and measure the resistance on the plug's contacts.
1: Multimeter
Error code: dF
Reason: The unit is in heating mode and the outdoor unit is being defrosted. After the defrost phase,
the indoor unit automatically switches back to the last operating mode.
61
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REMKO RVT series
11.3 Resistances of the
temperature probes
Probe T1, T2, T3 and T4
Temp.
(°C)
-20 115.27 12 18.72
-19 108.15 13 17.80
-18 101.52 14 16.93
-17 96.34 15 16.12
-16 89.59 16 15.34
-15 84.22 17 14.62
-14 79.31 18 13.92
-13 74.54 19 13.26
-12 70.17 20 12.64
-11 66.09 21 12.06
-10 62.28 22 11.50
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
Temp.
(°C)
44 4.39 79 1.21
45 4.21 80 1.17
46 4.05 81 1.14
47 3.89 82 1.10
48 3.73 83 1.06
49 3.59 84 1.03
50 3.45 85 1.00
51 3.32 86 0.97
52 3.19 87 0.94
53 3.07 88 0.91
54 2.96 89 0.88
55 2.84 90 0.85
56 2.74 91 0.83
57 2.64 92 0.80
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
-9 58.71 23 10.97
-8 56.37 24 10.47
-7 52.24 25 10.00
-6 49.32 26 9.55
-5 46.57 27 9.12
-4 44.00 28 8.72
-3 41.59 29 8.34
-2 39.82 30 7.97
-1 37.20 31 7.62
0 35.20 32 7.29
1 33.33 33 6.98
2 31.56 34 6.68
3 29.91 35 6.40
4 28.35 36 6.13
5 26.88 37 5.87
6 25.50 38 5.63
58 2.54 93 0.78
59 2.45 94 0.75
60 2.36 95 0.73
61 2.27 96 0.71
62 2.19 97 0.69
63 2.11 98 0.67
64 2.04 99 0.65
65 1.97 100 0.63
66 1.90 101 0.61
67 1.83 102 0.59
68 1.77 103 0.58
69 1.71 104 0.56
70 1.65 105 0.54
71 1.59 106 0.53
72 1.54 107 0.51
73 1.48 108 0.50
7 24.19 39 5.40
8 22.57 40 5.18
9 21.81 41 4.96
10 20.72 42 4.76
11 19.69 43 4.57
74 1.43 109 0.48
75 1.39 110 0.47
76 1.34 111 0.46
77 1.29 112 0.45
78 1.25 113 0.43
62
Page 63
Temp.
(°C)
114 0.42 127 0.30
115 0.41 128 0.29
116 0.40 129 0.28
117 0.39 130 0.28
118 0.38 131 0.27
119 0.37 132 0.26
120 0.36 133 0.26
121 0.35 134 0.25
122 0.34 135 0.25
123 0.33 136 0.24
124 0.32 137 0.23
125 0.32 138 0.23
126 0.31 139 0.22
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
Temp.
(°C)
16 82.54 51 18.96
17 78.79 52 18.26
18 75.24 53 17.58
19 71.86 54 16.94
20 68.66 55 16.32
21 65.62 56 15.73
22 62.73 57 15.16
23 59.98 58 14.62
24 57.37 59 14.09
25 54.89 60 13.59
26 52.53 61 13.11
27 50.28 62 12.65
28 48.14 63 12.21
29 46.11 64 11.79
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
Probe T5
Temp.
(°C)
-20 542.7 -2 200.7
-19 511.9 -1 190.5
-18 483.0 0 180.9
-17 455.9 1 171.9
-16 430.5 2 163.3
-15 406.7 3 155.2
-14 384.3 4 147.6
-13 363.3 5 140.4
-12 343.6 6 133.5
-11 325.1 7 127.1
-10 307.7 8 121.0
-9 291.3 9 115.2
-8 275.9 10 109.8
-7 261.4 11 104.6
-6 247.8 12 99.69
-5 234.9 13 95.05
-4 222.8 14 90.66
-3 211.4 15 86.49
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
30 44.17 65 11.38
31 42.33 66 10.99
32 40.57 67 10.61
33 38.89 68 10.25
34 37.30 69 9.90
35 35.78 70 9.57
36 34.32 71 9.25
37 32.94 72 8.94
38 31.62 73 8.64
39 30.36 74 8.36
40 29.15 75 8.08
41 28.00 76 7.82
42 26.90 77 7.57
43 25.86 78 7.32
44 24.85 79 7.09
45 23.89 80 6.86
46 22.89 81 6.64
47 22.10 82 6.43
48 21.26 83 6.23
49 20.46 84 6.03
50 19.69 85 5.84
63
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REMKO RVT series
Temp.
(°C)
86 5.66 109 2.86
87 5.49 110 2.78
88 5.32 111 2.70
89 5.16 112 2.63
90 5.00 113 2.56
91 4.85 114 2.49
92 4.70 115 2.42
93 4.56 116 2.36
94 4.43 117 2.29
95 4.29 118 2.23
96 4.17 119 2.17
97 4.05 120 2.12
98 3.93 121 2.06
99 3.81 122 2.01
Resistance
(kW)
Temp.
(°C)
Resistance
(kW)
100 3.70 123 1.96
101 3.60 124 1.91
102 3.49 125 1.86
103 3.39 126 1.81
104 3.30 127 1.76
105 3.20 128 1.72
106 3.11 129 1.67
107 3.03 130 1.63
108 2.94
64
Page 65

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 a yearly 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 the refrigerant volume
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 Half-
yearly
l
l
Yearly
l
l
l
l
l
1)
l
65
Page 66
REMKO RVT series
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.
Cleaning the air filter
Clean the air filter at intervals of no more than 2 weeks. Reduce this interval if the air is especially dirty
.
Please proceed as follows to clean the filters:
1. Lift the front panel of the indoor unit.
2. First press the clip of the filter up and release
the clasp, lift it and pull it out from the front.
5. Clean this filter using a normal vacuum cleaner facing upwards.
. To do so, turn the dirty side so it is
3. Pull out the filter
6. Then clean the large air filter with lukewarm
water and a mild detergent. The dirty side should be face down.
.
7. Rinse the filter with fresh water and shake off any excess water.
If water is used, let the filter dry out properly in the air before fitting it back into the unit.
8. Carefully insert the filter. Ensure that it locates correctly.
9. Close the front panel of the indoor unit again.
4. If your filter has a small air freshening filter
detach it from the bigger filter.
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.
66
Page 67

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 of unit.
4. Cover the unit as far as possible with plastic foil in order to protect it from the influences of weather
Permanent shutdown
Ensure that units and components are disposed of in accordance with local regulations, e.g. through authorised disposal and recycling specialists or at collection points.
REMKO GmbH & Co. KG or your contractual partner will be pleased to provide a list of certified firms in your area.
f the electrical power supply to the
.
67
Page 68
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23
24
25
26
30
27
28
29
22
REMKO RVT series

14 Exploded view and spare parts lists

14.1 Exploded view of indoor unit RVT 265-355 DC IT

Fig. 45: Exploded view of the unit RVT 265-355 DC IT
We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
68
Page 69

14.2 Spare parts list for the indoor unit RVT 265-355 DC IT

IMPOR
To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate)
No. Designation
1 Unit trim
2 Air filters, set
3 Intelligent eye
4 Housing front
5 Evaporator
6 Fan bearing
7 Aerator roller
8 Air deflection blade, horizontal
9 Infrared remote control
10 Air deflection blade, vertical, individual
11 Fastening rail
12 Housing back
TANT!
13 Probe, evaporator
14 Wall bracket spacer
15 Condensate hose
16 Fin motor, vertical
17 Cover
18 Fan motor
19 Temperature probe, indoor air
20 Display box, cpl.
21 Fine dust filter
22 Fin motor, horizontal
23 Control board
24 Temperature probe, evaporator
25 Humidity probe
26 Electrical connections cover
27 27 fan motor cover
28 Fan bearing bracket
29 Refrigerant piping securing bracket
30 Intelligent eye bracket
69
Page 70
1
2
3
4
5
6
7
8
9
10
24
11
13
12
14
15
16
17
18
19
20
21
22
23
REMKO RVT series

14.3 Exploded view of the outdoor units RVT 265-355 DC AT

Fig. 46: Exploded view of the unit RVT 265-355 DC AT
We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
70
Page 71

14.4 Spare parts list for outdoor units RVT 265-355 DC AT

IMPOR
To ensure the correct delivery of spare parts, please always the device type with the corresponding serial number (see type plate)
No. Designation
1 Air outlet grid
2 Front wall
3 Fan blade
4 Fan motor
5 Fan motor mounting plate
6 Corner panel, left
7 Condensate tray heating
8 Crankcase heating
9 Condenser
10 Air inlet temperature probe
11 Control board
12 Recessed grip
TANT!
13 Side section, right
14 Floor panel
15 Compressor
16 Heat gas temperature probe
17 Shut-off valve, suction pipe
18 Shut-off valve, injection pipe
19 Partitioning panel
20 Condenser temperature probe
21 4-way valve
22 Electronic injection valve
23 Refrigerant connections cover
24 Cover panel
71
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REMKO RVT series

15 Index

A
Alarms
Checks .............................49
Possible causes ...................... 49
Remedial measures ................... 49
Assembly
Strip foundation ...................... 38
C
Care and maintenance ................... 65
Cleaning
Air filter for indoor unit ................. 66
Condensate pump .................... 66
Housing ............................ 66
Condensate drainage connection and safe
drainage .............................. 38
Condensate pump, electrical wiring diagram ... 42
Cooling mode .......................... 17
Customer service ....................... 49
D
Disposal of equipment .....................8
E
Electrical drawings ................... 43, 44
Electrical wiring ......................... 40
Electrical wiring diagram .................. 41
Electrical wiring diagram, condensate pump ... 42
Environmental protection ...................8
Exploded view of the unit .............. 68
, 70
F
Fault display on the indoor unit ............. 51
Function test of the cooling and heating modes 48
Functional checks ....................... 47
Minimum clearances ..................... 31
Multifunction board, connection .............45
O
Oil return measures ......................32
Ordering spare parts .................. 69, 71
P
Propellant in accordance with Kyoto Protocol .. 10
R
Remote control
Keys ...............................20
Resistances
emperature probes ................... 62
T
S
Safe drainage in the event of leakages ....... 39
Safety
Dangers of failure to observe the safety
notes ............................... 5
General ............................. 5
Identification of notes ................... 5
Instructions for the operator .............. 6
Note for inspection work .................6
Note for installation work ................ 6
Note for maintenance work .............. 6
Personnel qualifications ................. 5
Safety-conscious working ................6
Unauthorised modification ...............7
Unauthorised replacement part manufacture . 7
Shutdown
Permanent .......................... 67
Temporary .......................... 67
Spare parts list ...................... 69, 71
I
Infrared remote control ................... 19
Installation
Outdoor unit ......................... 29
Installation materials ..................... 28
Intended use ............................ 7
K
Keys on the remote control ................ 20
M
Maintenance ........................... 65
Manual mode .......................... 19
T
Temperature probes
Resistances ......................... 62
Test run ............................... 47
Troubleshooting and customer service ....... 49
U
Unit installation ......................... 34
W
Wall opening ........................... 28
Warranty ............................... 7
72
Page 73
73
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REMKO RVT series
74
Page 75
Page 76
REM KO QUALITY WITH SYSTEMS
Air-Conditioning | Heating | New Energies
Telephone +49 (0) 5232 606-0 Telefax +49 (0) 5232 606-260
E-mail info@remko.de URL www.remko.de
REMKO GmbH & Co. KG Klima- und Wärmetechnik
Im Seelenkamp 12 32791 Lage
Hotline within Germany
+49 (0) 5232 6 06-0
Hotline International
+49 (0) 5232 606-130
We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!
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