4.10.6.
Connecting a direct heating circuit and a
domestic hot water tank
C002305-j
3
4
5
6
7
8
On/off
OT
BL
RL
Tout
Tdhw
1
2
TS +
B
A
B
0-10V
S AMB C
4 3 2 1 2 1
+ -
S AMB B
2 1
S AMB A
2 1
S SYST + TA -
S ECS
S EXT
S DEP C
2 1
2 1
2 1
2 1
2 1
S DEP B
2 1
SCU
PCU
A
Do not connect anything to the terminal block.
Z
CAUTION
Do not connect anything to the
Mr
outlet on the
terminal block. The reversal valve is connected
to the PCU PCB in the boiler.
E
Connect the outside temperature sensor.
R
Connect a safety thermostat if the heating circuit is for
underfloor heating.
4
Remove the bridge.
4
Connect the wires from the safety thermostat to the
connector.
MCA 15 - MCA 25 MCA 25/28 MI
4. Installation
29/04/2010 - 300022146-001-B
35
