1
2
3
■
■
4
1
1
NOTE
1
2
2
2
1
1
■
■
2
Procedure
Connection of the thermostat cable
Using the appropriate cable, connect the power circuit to the
Connection of the thermostat cable depends on the application.
main circuit breaker as shown on the wiring diagram and in
figure 2.
See also "Typical application examples" on page 7 and "Room
thermostat installation configuration" on page 23 for more information
Connect the ground conductor (yellow/green) to the grounding
and con
figuration options on pump operation in combination with a
screw on the X1M terminal.
room thermostat.
Fix the cable with cable ties to the cable tie mountings to ensure
Thermostat requirements
strain relief. (Positions are marked with
in figure 2.)
Power supply: battery operated
Note: only relevant field wiring is shown.
Contact voltage: 24 V.
If the backup heater capacity is to be set lower than the default
Procedure
value (6 kW), this can be done by reconnecting wires according
to following figure. The backup heater capacity is now 3 kW.
Connect the thermostat cable to the appropriate terminals as
shown on the wiring diagram and installation manual of the room
thermostat kit.
X5M
1
2
3
4
1 E12H
ON
2
3 E12H
4 OFF
X5M
BLK
BRN
2
3
Fix the cable with cable ties to the cable tie mountings to ensure
strain relief.
Set DIP switch SS2-3 on the PCB to ON. See "Room thermostat
installation configuration" on page 23 for more information.
Connection of the valve control cables
X5M
Valve requirements
1
2
3
4
1 E12H
ON
2
3 E12H
4 OFF
X5M
BLK
BRN
■
Power supply: 24 V AC
■
Maximum running current: 100 mA
Wiring the 2-way valve
Using the appropriate cable, connect the valve control cable to
Power input selection to transformer TR2
the X2M terminal as shown on the wiring diagram.
This selection is needed to ensure a stable 24 V AC output.
Wiring is different for a NC (normal closed) valve
Procedure
and a NO (normal open) valve. Make sure to
Measure main input power.
connect to the correct terminal numbers as
detailed on the wiring diagram and illustrations
Reconnect wire according to the result of measurement.
below.
Normal closed (NC) 2-way valve
Normal open (NO) 2-way valve
X8M
X2M 5
6
7
X2M
5
6 7
3
229~253 V AC
M
M
NC
NO
209~228 V AC
Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
187~208 V AC
Wiring the 3-way valve
Using the appropriate cable, connect the valve control cable to
the appropriate terminals as shown on the wiring diagram.
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
X2M
8
9 10
M
"SPST 3-wire" valve
X2M 8
9
10
M
Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
Installation manual
EDLQ036~054B EBLQ036~054BA6VJU1
20
Unit for air to water heat pump system
4PW56182-1
