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4. Installation
C
TS +
B
1
2
38
n Domestic hot water tank after the low-loss header
SCU
C
AUX
5
TS +
B
A
3
6
4
A
Z
E
R
T
Y
0-10V
S AMB C
S AMB B
S AMB A
+ -
4 3 2 1 2 1
2 1
2 1
S SYST + TA -
S ECS
S EXT S DEP C
S DEP B
2 1
2 1
2 1
2 1
2 1
2 1
7
8
9
Do not connect anything to the terminal block.
Connect the outside temperature sensor.
Connect a safety thermostat if the heating circuit is for
underfloor heating.
Remove the bridge.
4
Connect the wires from the safety thermostat to the
4
connector.
Low loss header
Connecting an additional circuit to the AD249 option.
Connect the heating pump (circuit A).
If underfloor heating is being used, put a safety
thermostat in place after the heating pump. The
safety thermostat will shut down the heating
pump in the event of overheating.
On/off
OT
BL
C002293-j
11
10
15/06/12 - 300022160-001-01
MCA 35
PCU
RL
Tout Tdhw
12
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