Connection Of The Thermostat Cable - Rotex RKHBH008BA Manuel D'installation

Note: only relevant field wiring is shown.
X1M
1 2 3
1 2 3
1 2 3
Connection of the backup heater power supply
Power circuit and cable requirements
Use a dedicated power circuit for the backup heater and
booster heater. Never use a power circuit shared by
another appliance.
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*008BA3V3 3 kW
(a) (b)
RKHB*008BA6V3 6 kW
RKHB*008BA6WN 6 kW
RKHB*008BA9WN 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
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
X1M
L1 L2 L3 N
L1 L2 L3
(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/X008BA
Indoor unit for air to water heat pump system
4PW54224-1A
X3M
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
1x 230 V
X1M
X3M
L1 N
L1 N

Connection of the thermostat cable

Connection of the thermostat cable depends on the application.
See also "Typical application examples" on page 4 and "Room
thermostat installation configuration" on page 21 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 and installation manual of the room
thermostat kit.
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 21 for more information.
Connection of the first set point and second set point contacts
The connection of the set point contact is only relevant in case dual
set point contact is enabled.
See also "Typical application examples" on page 4 and "Dual set
point control" on page 27.
Contact requirements
The contact shall be a voltage free contact that ensure 230 V
(Ω)
(100 mA).
Procedure
1 Connect the contact of first set point and second set point to the
appropriate terminals as shown in the figure below
X2M
1 2 3 4
SP2 SP1
2 Fix the cables with cable ties to the cable tie mountings to
ensure strain relief.
3 Depending on the required pump operation set DIP switch
SS2-3 and field setting [F-00]. See "Pump operation
configuration" on page 22 and field setting [F-00] in "[F] Option
setup" on page 30.
Connection of the valve control cables
Valve requirements
■
Power supply: 230 V AC
■
Maximum running current: 100 mA
Wiring the 2-way valve
1 Using the appropriate cable, connect the valve control cable to
the X2M terminal as shown on the wiring diagram.
NOTE Wiring is different for a NC (normal closed) valve
and a NO (normal open) valve. Make sure to
connect to the correct terminal numbers as detailed
on the wiring diagram and illustrations below.
Normal closed (NC) 2-way valve
X2M 5 6 7
M
2 Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
SP1 First set point contact
SP2 Second set point contact
Normal open (NO) 2-way valve
X2M 5 6 7
M
NC
Installation manual
NO
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