Installation manual
21
EKHBH/X008BB
Indoor unit for air to water heat pump system
4PW62570-1A – 01.2011
Connection of the thermostat cable
Connection of the thermostat cable depends on the application.
See also
Typical application examples" on page
"8.2. Room thermostat installation configuration" on page 24
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
thermostat installation configuration" on page
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
"3.4. Typical application examples" on page 5
.
Contact requirements
The contact shall be a voltage free contact that ensure 230 V
(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
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
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.
2
Fix the cable(s) with cable ties to the cable tie mountings to
ensure strain relief.
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.
Connection of 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
,
X2M
SP1
SP2
1
2
3
4
SP1
First set point contact
SP2
Second set point contact
NOTICE
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
Normal open (NO) 2-way valve
NOTICE
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
NC
5
X2M
6
7
M
NO
5
6
X2M
7
M
9
X2M
8
10
M
9
X2M 8
10
M
1
X1Y
X2M
2
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