Connection Of The Indoor Unit Power Supply And Communication Cable; Connection Of The Thermostat Cable - Rotex RKHBH008AA Manuel D'installation

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Connection of the indoor unit power supply and
communication cable
Power circuit and cable requirements
Power supply for the indoor unit is to be provided through the outdoor
unit. Data communication with the outdoor unit is provided through
the same cable.
For all guidelines and specifications regarding field wiring between
the indoor unit and the outdoor unit, please refer to the outdoor unit
installation manual.
Procedure
1
Using the appropriate cable, connect the power circuit to the
appropriate terminals as shown on the wiring diagram and the
illustration below.
2
Connect the earth conductor (yellow/green) to the earthing
screw on the switch box mounting plate.
3
Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
4
When routing out cables, make sure that these do not obstruct
mounting of the indoor unit cover, see figure 3.
Note: only relevant field wiring is shown.
Connection of the backup heater power supply
Power circuit and cable requirements
Be sure to use a dedicated power circuit for the
backup heater. Never use a power circuit shared by
another appliance.
Use one and same dedicated power supply for the
outdoor unit, indoor unit, backup heater and booster
heater (domestic hot water tank).
This power circuit must be protected with the required safety devices
according to local and national regulations.
Select the power cable in accordance with relevant local and national
regulations. For the maximum running current of the backup heater,
refer to the table below.
(1) (2)
Backup
heater
Indoor unit model
capacity
RKHB*008AA3V3
3 kW
(a) (b)
RKHB*008AA6V3
6 kW
RKHB*008AA6WN
6 kW
RKHB*008AA9WN
9 kW
(a) Equipment complying with EN/IEC 61000-3-12
(b) This equipment complies with EN/IEC 61000-3-11
impedance Z
is less than or equal to Z
sys
user's supply and the public system. It is the responsibility of the installer or user
of the equipment to ensure, by consultation with the distribution network operator
if necessary, that the equipment is connected only to a supply with a system
impedance Z
less than or equal to Z
sys
(1) European/International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage systems with
input current >16 A and ≤75 A per phase.
(2) European/International Technical Standard setting the limits for voltage changes,
voltage fluctuations and flicker in public low-voltage supply systems for
equipment with rated current ≤75 A.
RKHBH/X008AA
Indoor unit for air to water heat pump system
4PW50203-1A
1
2
3
1 2 3
Backup heater
Maximum
nominal
running
Z
voltage
current
max
1x 230 V
13 A
1x 230 V
26 A
0.29
3x 400 V
8.6 A
3x 400 V
13 A
(1)
(2)
provided that the system
at the interface point between the
max
.
max
Procedure
1
Using the appropriate cable, connect the power circuit to the
main circuit breaker as shown on the wiring diagram and the
illustration below.
2
Connect the earth conductor (yellow/green) to the earthing
screw on the X1M terminal.
3
Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
Note: only relevant field wiring is shown.
3x 400 V

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.
See also "Typical application examples" on page 3 and "Room
thermostat installation configuration" on page 15 for more information
and configuration options on pump operation in combination with a
room thermostat.
Thermostat requirements
Power supply: 230 V AC or battery operated
Contact voltage: 230 V.
Procedure
1
Connect the thermostat cable to the appropriate terminals as
shown on the wiring diagram.
Heating only thermostat
X2M
H C
L N
1 2 3 4
th
2
Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
3
Set DIP switch SS2-3 on the PCB to ON. See "Room thermostat
installation configuration" on page 15 for more information.
(Ω)
1x 230 V
L1 L2 L3
L1
N
Heating/cooling thermostat
X2M
H C
L N
1 2 3 4
H
C
th
Installation manual
N
13

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