Carefully read the operating manual before commissioning the units for the first time. It contains
useful tips and notes such as hazard warnings to
prevent personal injury and material damage.
Failure to follow the directions in this manual not
only presents a danger to people, the environment
and the system itself, but will void any claims for
liability.
Keep this operating manual and the refrigerant
data sheet near to the units.
1.2
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by symbols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
Safety and
usage instructions
General safety notes
Identification of notes
DANGER!
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or material and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recommendations as well as information for efficient
and fault-free operation.
1.3
Personnel qualifications
Personnel responsible for commissioning, operation, maintenance, inspection and installation must
be able to demonstrate that they hold a qualification which proves their ability to undertake the
work.
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
Dangers of failure to observe
1.4
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
In particular, failure to observe the safety notes
may pose the following risks:
n The failure of important unit functions.
n The failure of prescribed methods of mainte-
nance and repair.
n Danger to people on account of electrical and
mechanical effects.
1.5
Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
4
1.6
Safety notes for the operator
The operational safety of the units and components is only assured providing they are used as
intended and in a fully assembled state.
n The units and components may only be set up,
installed and maintained by qualified personnel.
n Protective covers (grille) over moving parts
must not be removed from units that are in
operation.
n Do not operate units or components with
obvious defects or signs of damage.
n Contact with certain unit parts or components
may lead to burns or injury.
n The units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
n Spaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
n All housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
n The units must be inspected by a service tech-
nician at least once annually. Visual inspections and cleaning may be performed by the
operator when the units are disconnected from
the mains.
Safety notes for installation,
1.7
maintenance and inspection
n Appropriate hazard prevention measures must
be taken to prevent risks to people when performing installation, repair, maintenance or
cleaning work on the units.
n The setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
n Local regulations and laws such as Water
Ecology Act must be observed.
n The power supply should be adapted to the
requirements of the units.
n Units may only be mounted at the points pro-
vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.
n Mobile units must be set up securely on suit-
able surfaces and in an upright position. Stationary units must be permanently installed for
operation.
n The units and components should not be oper-
ated in areas where there is a heightened risk
of damage. Observe the minimum clearances.
n The units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
n Safety devices must not be altered or
bypassed.
Unauthorised modification
1.8
and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
1.9
Intended use
Depending on the model, the equipment and the
additional fittings with which it is equipped is only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed room.
Any different or additional use shall be classed as
non-intended use. The manufacturer/supplier
assumes no liability for damages arising from such
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.
Under no circumstances should the threshold
values specified in the technical data be exceeded.
1.10
For warranty claims to be considered, it is essential
that the ordering party or its representative complete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "General business and delivery conditions". Furthermore, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
Warranty
5
REMKO WKF Duo
1.11
The devices are supplied in a sturdy shipping container. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
1.12
Disposal of packaging
All products are packed for transport in environmentally friendly materials. Make a valuable contribution to reducing waste and sustaining raw materials. Only dispose of packaging at approved
collection points.
Transport and packaging
WARNING!
Environmental protection
and recycling
Disposal of equipment and components
Only recyclable materials are used in the manufacture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not disposed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recycling specialists or at collection points.
6
IB
AB
NAM
KA1
STL
KML
AM1
VEN
STL
KML
IM
NIM
NZH
KA2
VHZ
AM2
VEN
KA1
NAM
GRL
2
2.1
Electrical wiring
System layout
Fig. 1: WKF 120 Duo system layout
AB:Outdoor area
IB:Indoor area
AM1,2:WKF 120 Duo outdoor unit
IM:WKF 120 Duo indoor unit
GRL:Common return pipe (DN 25)
KA1:Condensate drain, OU (must be designed
KA2:Condensate drain, IU
to be frost proof!)
KML:
NAM:Power supply, OU = 230V / 1~ / 50Hz
NIM:Power supply, IU = 230V / 1~ / 50Hz
NZH:Power supply for auxiliary heater (optional),
STL:
VEN:Fan
VHZ:Inlet for heating (DN 25)
Refrigerant piping 3/8" and 5/8"
20A (z.B. 3x2.5 mm2)
16A (z.B. 3x1.5 mm2)
(e.g. 5x2.5 mm2)
Control line (e.g. 2x1 mm2)
7
IB
AB
STL
KML
NAM
KA1
AM1
VEN
AM2
VEN
KA1
NAM
VENVEN
STL
KML
IM
NIM
NZH
KA2
VHZGRL
REMKO WKF Duo
Fig. 2: WKF 180 Duo system layout
AB:Outdoor area
IB:Indoor area
AM1,2:WKF 180 Duo outdoor unit
IM:WKF 180 Duo indoor unit
GRL:Common return pipe (DN 25)
KA1:Condensate drain, OU (must be designed
to be frost proof!)
KA2:Condensate drain, IU
KML:
NAM:Power supply, OU = 400V / 3~ / 50Hz
NIM:Power supply, IU = 230V / 1~ / 50Hz
NZH:Power supply for auxiliary heater
STL:
VEN:Fan
VHZ:Inlet for heating (DN 25)
Refrigerant piping 3/8" and 5/8"
3x16A (e.g. 5x1.5 mm2)
16A (z.B. 3x1.5 mm2)
(e.g. 5x2.5 mm2)
Control line (e.g. 2x1 mm2)
8
2
1
4
3
5
6
7
8
9
A
B
10
11
14
12
13
2.2
Overview of components in the indoor units
Fig. 3: Overview of components in the indoor units
A:Indoor unit A
B:Indoor unit B
1:Common inlet
2:Electric heating element, 9kW / 400V - 50Hz
3:Electric medium flow rate meter, indoor unit A
4:Manual air bleeder
5:Electric medium flow rate meter, indoor unit B
6:Ball valve for filling/drainage
7:Safety assembly
8:Common return pipe
9:Refrigerant piping, indoor unit B
10:Refrigerant piping, indoor unit A
11:Plate heat exchanger, indoor unit A
12:0-12V-regulated Wilo Stratos Para 1-11,
indoor unit A
13:0-12V-regulated Wilo Stratos Para 1-11,
indoor unit B
14:Plate heat exchanger, indoor unit B
9
230V~/N/Pe
230V~/N/Pe
230V~/N/Pe
L1
N
Pe
L1
N
Pe
L1
N
Pe
400V/3~/N/Pe
L1
L2 L3NPe
1
ABCDE
G
F
REMKO WKF Duo
2.3
Overview of the electrical cables
WKF 120 Duo
Fig. 4: Overview of the electrical cables on the WKF 120 Duo
1:Main distributor
A:Power supply, outdoor unit 1
B:Power supply, outdoor unit 2
C:Power supply, indoor unit
D:Power company disable signal, potential-free /
open = disabled
E:Power supply, 9 kW heating element,
indoor unit
F:Communication F1/F2,
Outdoor unit 1 / indoor unit3x1.5 mm2 shielded
G:Communication F1/F2,
Outdoor unit 2 / indoor unit3x1.5 mm2 shielded
10
WKF 180 Duo
1
ABCDE
G
F
230V~/N/Pe
400V/3~/N/Pe
L1
L2 L3NPe
L1
L2 L3NPe
400V/3~/N/Pe
L1
N
Pe
400V/3~/N/Pe
L1
L2 L3NPe
Fig. 5: Overview of the electrical cables on the WKF 180 Duo
1:Main distributor
A:Power supply, outdoor unit 1
B:Power supply, outdoor unit 2
C:Power supply, indoor unit
D:Power company disable signal, potential-free /
open = AM disabled
E:Power supply, 9 kW heating element,
indoor unit
F:Communication F1/F2,
Outdoor unit 1 / indoor unit 3x1.5 mm2 shielded
G:Communication F1/F2,
Outdoor unit 2 / indoor unit 3x1.5 mm2 shielded
11
REMKO WKF Duo
2.4
General notes
n It is necessary to lay a power supply cable both
to the outdoor unit and, separately, to the
indoor unit.
n Power to the indoor unit may not be discon-
nected by the power company if there is a disable period circuit (anti-freeze protection).
n The indoor unit requires a single-phase power
supply of 230 V / 50 Hz.
The outdoor units if the WKF 180 Duo require
a three-phase power supply of 400 V / 50 Hz.
The WKF 120 Duo outdoor units required a
230 V / 50 Hz power supply
n The electrical connection between outdoor and
indoor units is made using a shielded threecore control line.
n Where applicable, a separate power supply
shall be provided to the indoor unit for an auxiliary heater.
n The heat pump manager needs to know
whether a power-company enable or disable
period is in effect. A potential-free switch must
be provided by the customer for this purpose.
(A closed switch signifies an enable, an open
switch a disable period.)
n A connection schematic along with corre-
sponding circuit diagrams can be found in the
"Connection diagram" chapter of this manual.
n Special rates for heat pumps may be offered
by the power company.
n Ask your local power company about the
details of any rates that might be available.
WARNING!
All cable sizes are to be selected according to
VDE 0100. Special attention should be given to
cable lengths, cable type and the kind of installation. The information in the connection diagram and in the system overview are to be
seen as an acceptable installation possibility
only in a standard case!
NOTICE!
Make sure to connect the outdoor unit neutral
connector properly, otherwise the varistors on
the line-filter circuit board will be destroyed.
NOTICE!
The electrical connection for the units must be
made at a separate feedpoint with a residual
current device in accordance with local regulations and should be laid out by an electrician.
DANGER!
All electrical installation work must be done by
an electrician.
WARNING!
Always note the currently applicable VDE
guidelines and the notes in TAB 2007. The size
and type of the fuse are to be taken from the
technical data.
Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.
12
1
1
1
Electrical connection -
2.5
indoor unit
The following instructions describe the electrical
connection of the indoor unit.
1.Remove the housing of the upper section by
pushing it upwards and pulling it forwards out
of the slot at the back.
2.Feed the supply line for the indoor unit
through the cable feedthroughs, as well as
the control line between the indoor and outdoor unit, and the cables for the external
devices and probes into the indoor unit.
3.Connect the power supply of the indoor unit
to the terminal strips.
4.Connect all secondary consumers (HGM,
HGU, changeover valves, etc.) to the I/O
module.
NOTICE!
Attach cables in accordance with the connection schematic and/or the circuit diagram in the
control box.
Electrical connection -
2.6
outdoor unit
n In order to establish the electrical connections,
the right-hand cover panel must be removed
(after undoing the screws).
Fig. 6: Series WKF 120 Duo - Removing the
plastic cover by undoing the screw
1: Screw
NOTICE!
Ensure correct polarity when connecting the
electrical leads, especially the control cable.
The number of lines and the sensors is
dependent on the configuration of the heating
system and the components.
Make sure to use enough cable when installing
the indoor unit so that the control box can be
fully lowered for future maintenance.
At the site, avoid adding cable inlets.
Fig. 7: Series WKF 180 Duo - Removing the cover
panel by undoing the screws
1: Screw
n Electrical protection for the system is imple-
mented in accordance with the information in
the technical data. Observe the required conductor cross-sections!
n All cables must be connected with the correct
polarity and strain relief.
n Follow the connection schematic and the circuit
diagram.
n The two-wire control line is to be connected to
terminals F1, F2 and the earth terminal.
n When connecting the control line, make sure
that polarity is correct.
13
1
REMKO WKF Duo
n If the outdoor unit is installed on a roof, it and
the supporting structure must be earthed separately (by connecting them to a lighting conductor or foundation earth electrode).
n With the series WKF 180 Duo, make sure that
on terminals L1(R), L2(S), L3(T) and N are
connected (see Fig. 9).
Fig. 8: Connection terminals - Outdoor unit
WKF 120 Duo
1: Power supply 230V/1~ /50Hz
Temperature probes
n The number of probes required can vary with
the type of system.
n Observe the pertinent notes for the probe posi-
tion found in the hydraulic schematic.
n The standard model includes an external probe
(S10) and an immersion probe (intended for
use as a custom hot-water probe (S08)).
n If a solar plant is connected, a PT-1000 probe
(S01) must be used as a collector probe and a
PT-1000 probe (S02) as a bottom storage tank
probe.
n All probes are to be connected to the indoor
unit switching cabinet in accordance with the
connection diagram.
Contact probe
Contact probes can be mounted on the pipes, to
measure the heating-circuit temperatures, for
example.
n The contact probe is fastened to a pipe with
the trapezoidal brackets and retaining strap
provided.
n Clean the mounting point on the pipe. Subse-
quently a thermal compound (A) is applied and
the probe is fixed in position.
Fig. 9: Connection terminals - Outdoor unit
WKF 180 Duo
NOTICE!
Make sure to connect the outdoor unit neutral
connector properly, otherwise the varistors on
the line-filter circuit board will be destroyed.
Fig. 10: Fastening the contact probe in place
If the sensor cables are too short, they can be
extended up to a maximum of 100m with wire
having a cross-section of 1.5 mm².
14
External probe
The connection of an outdoor probe is always
required for the Smart Control.
n Mount the external probe pointing skyward, in
a north-easterly direction, about 2.5 metres
above the ground. It may not be subjected to
direct sunlight and is to be protected against
excessive wind. Installation above windows or
air ducts is to be avoided.
n In order to carry out the installation, remove the
cover and secure the probe with the screws
provided.
n The customer is recommended to provide a
cable with wire cross-section of 0.5 mm² for
connecting the probe.
Fig. 11: External probe
15
2nd mixed heating cycle
Mixing valve 230 V
Closed Open
Closed
OpenClosed Open
Bypass valve
Indoor unit 230 V
1st mixed heating cycle
Mixing valve 230 V
Circulation pump
Hot water 230 V
Unmixed heating cycle
Pump 230 V (optional)
1st mixed heating cycle
Pump 230 V
Pump solar 230 V
unregulated
Changeover valve
Pump, cooling
Pump 230 V
2nd mixed heating cycle
Not assigned
Changeover valve
2. Heat generator (BVT)
Changeover valve
Hot water preparation
Power supply
230 V
Power supply
Internal pump - indoor unit
Power supply I/0 module
Communication
Outdoor unit
2 x 1.5 mm2
Power supply
Indoor unit
3 x 1.5 mm2
Terminal block X1.1
Assigned
Assigned
Assigned
Assigned
Assigned
Assigned
Assigned
Assigned
Assigned
Mains voltage connection provided by
the customer (bauseitig) from sub-distribution!
Mains voltage connection provided by the customer (bauseitig) from sub-distribution!
Outdoor unit
WKF 120 / WKF 120 Duo
230V/1~/N/Pe
E.g. 3 x 2.5 mm2
Outdoor unit
WKF 180 / WKF 180 Duo
400V/3~/N/Pe
E.g. 5 x 1.5 mm2
Electric heating coil 9kW
Mains voltage
400V/3~/N/Pe
E.g. 5 x 2.5 mm2
Plug on the heating coil
Potential-free
A34.1 General
alarm signal
A33.1 no
function
A32.1 enable
2. WE Smart BVT/Serv
A31.1 no
function
A30.1 no
function
Refrigerant
A24/25.1
S07.1
Solar
return flow
S04.1
Solar storage tank, bottom
S02.1
Solar collector
S01.1
Medium flow rate HP
S24.1
Medium flow rate solar
S23.1
Not connected
A22/23.1
A20/21.1
A04.1
A03.1
A02.1
A01.1
A14.1
A13.1
A12.1
A11.1
A10.1
NOTE: without blocking contactor,
jumper must be inserted
Closed = enable
Energy supply provider contact
S16.1
Heat pump RF
S15.1
2nd mixed heating cycle RF
S14.1
Coding resistor
RC.1
Heat pump inlet
S13.1
Communication Com-Kit 1
B2/A2
1st mixed heating cycle RF
S11.1
1st mixed Heating cycle inlet
S12.1
Operating module SMT 1
B1/A1
Outside temperature
S10.1
Storage tank, centre
S09.1
Hot water probe
S08.1
2nd mixed Heating cycle inlet
S06.1
Pump 0-10V
A46.1
2nd mixed Heating cycle
Circulation
S05.1
Temperature or impulse
Solar probe inlet
S03.1
Pump 0-10V (indoor unit)
A43.1
Pump 0-10V (HGU)
A42.1
Unmixed Heating cycle
Pump 0-10V (HGM)
A41.1
1st mixed Heating cycle
Speed setting PWM
A40.1
Solar pump
S29.1/GND
S28.1/GND
S27.1/GND
S26.1/GND
S25.1/GND
S0 PV feed-in
(min. 500 lmp./kWh)
S0 PV yield
(min. 500 lmp./kWh)
S0 household meter
(min. 500 lmp./kWh)
S0 HP electricity meter
(min. 500 lmp./kWh)
Not connected
SMT I/0 01
REMKO WKF Duo
2.7
Electrical configuration - I/0 module 01
Use wire gauge corresponding with the connection cable supplied!
Lay load lines separately to measuring lines!
16
2.8
Terminal assignment / legend - I/0 module
Terminal assignment I/0 module 01
DesignationInputOutputSignalDescription
PowerXPower supply I/O 230V
PEXPower supply primary pump IM
S01.1XSolar probe collector
S02.1XSolar probe storage tank, bottom
S03.1XSolar probe inlet HM solar
S04.1XSolar probe RF HM solar
S05.1XCirculation RF temp./impulse
S06.1X2nd mixed heating cycle inlet probe
S07.1XProbe refrigerant line
S08.1XDomestic hot-water tank
S09.1XProbe storage tank with solar heating (ext. energy)
S10.1XExternal probe
S11.1X1st mixed heating cycle RF probe
S12.1X1st mixed heating cycle inlet probe
S13.1XHeat pump inlet
S14.1X2nd mixed heating cycle RF probe
S15.1XHeat pump RF
S16.1XEnergy supplier contact (NC) / dew point monitoring
S20.1XNot connected
S21.1XNot connected
S22.1XNot connected
S23.1XUltrasonic flow rate meter solar, impulse rate
Thanks to intensive training,
our consultants are always
completely up-to-date in terms
of technical knowledge. This has
given us the reputation of being
more than just an excellent,
reliable supplier:
REMKO, a partner
helping you find solutions to
your problems.
Distribution
REMKO offers not just a well
established sales network both
nationally and internationally, but
also has exceptionally highlyqualified sales specialists.
REMKO field staff are more than
just sales representatives: above
all, they must act as advisers to
our customers in air conditioning
and heating technology.
SFlbCustomer Service
Our equipment operates
precisely and reliably. However,
in the event of a fault, REMKO
customer service is quickly at
the scene. Our comprehensive
network of experienced dealers
always guarantees quick and
reliable service.
REMKO INTERNATIONAL
… and also right in your neighbourhood!
Make use of our experience and advice
We reserve the right to make technical changes, and provide no guarantee as to the accuracy of this data!
REMKO GmbH & Co. KG
Air conditioning and heating technology
Im Seelenkamp 12 D-32791 Lage
Postfach 1827 D-32777 Lage
Telephone +49 5232 606-0
Telefax +49 52 32 606-2 60
E-mail info@remko.de
Website www.remko.de
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