Installation manual
19
RKHBH/X008BA
Indoor unit for air to water heat pump system
4PW54224-1A
Wiring the 3-way valve
1 Using the appropriate cable, connect the valve control cable to
the appropriate terminals as shown on the wiring diagram.
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
Wiring the bottom plate heater
1 Using the appropriate cable, connect the power supply cable to
the appropriate terminals as shown on the wiring diagram below.
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
3 When routing out cables, make sure that these do not obstruct
mounting of the indoor unit cover.
4 Select the appropriate field setting values for the bottom plate
heater. See "[F-02]", "[F-03]", and "[F-04]" on page 31.
Connection to a benefit kWh rate power supply
Electricity companies throughout the world work hard to provide
reliable electric service at competitive prices and are often authorized
to bill clients at benefit rates. E.g. time-of-use rates, seasonal rates,
Wärmepumpentarif in Germany and Austria, ...
This equipment allows for connection to such benefit rate power
supply delivery systems.
Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the benefit kWh rate
power supply delivery systems available, if any.
When the equipment is connected to such benefit kWh rate power
supply, the electricity company is allowed to:
■ interrupt power supply to the equipment for certain periods of
time;
■ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the outdoor unit
compressor will not operate.
Possible types of benefit kWh rate power supply
Possible connections and requirements to connect the equipment to
such power supply are illustrated in the figure below:
NOTE
Two types of 3-way valves can be connected.
Wiring is different for each type:
■ "Spring return 2-wire" type 3-way valve
The 3-way valve should be fitted as such that
when the 3-way valve is idle (not activated),
the space heating circuit is selected.
■ "SPST 3-wire" type 3-way valve
The 3-way valve should be fitted as such that
when terminal ports 9 and 10 are electrified,
the domestic hot water circuit is selected.
"Spring return 2-wire" valve "SPST 3-wire" valve
bottom plate heater
9X2M 8
10
M
9X2M 8
10
M
1
X1Y
X2M
2
15a
15
CAUTION
For a benefit kWh rate power supply like illustrated
below as type 1
■ If the benefit kWh rate power supply is of the type that
power supply is not interrupted, then control of the
heaters is still possible.
For the different possibilities of controlling heaters at
moments that benefit kWh rate is active, refer to
"[D] Benefit kWh rate power supply/Local shift value
weather dependent" on page 30.
If heaters must be controlled at moments that the
benefit kWh rate power supply is off, then these
heaters shall be connected to a separate power
supply.
■ During the period that the benefit kWh rate is active
and power supply is continuous, then stand-by power
consumption is possible (PCB, controller, pump, ...).
For a benefit kWh rate power supply like illustrated
below as types 2 or 3
If during benefit kWh rate power supply the power supply is
shut, then heaters can not be controlled.
■ This power supply interruption should not be longer
than 2 hours, otherwise the real time clock of the
controller will be reset.
■ During power supply interruption, the controller
display will be blank.
1 Benefit kWh rate power supply box
2 Receiver controlling the signal of the electricity company
3 Power supply to outdoor unit
(refer to the installation manual delivered with the outdoor unit)
4 Voltage free contact to indoor unit
1
2
3
X2M17 18
X40A
A1P
LN
2
4
1
3
3
LN
2
1
43
43
LN
2
1
S2S
S2S
S2S
[D-01]=1
1
2
3
LN
2
1
3
LN
2
1
43
44
43
LN
2
1
S2S
S2S
S2S
[D-01]=2
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