7. Remove the 2 retaining screws.
8. Disassemble the protective cover from the flat bars.
5.8.4.
Position of the PCBs
C
0
0
3
7
6
6
-B
PCU
SCU-S191
SU
PSU
5.8.5.
Heating circuit with boiler alone
A
Connect a ON/OFF thermostat or OpenTherm controller
to the terminals of the connector (Option).
4
Remove the bridge.
4
Connect the wires from the ON/OFF thermostat to
the connector
Z
Connect the outside temperature sensor (Option)
E
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.
R
Do not connect anything to the terminal block
Settings to be made for this type of installation
Parameters Description
Settings to be made See chapter
P36
Shutdown input function
1
"Parameter descriptions", page 68
M002533-C
7
7
8
3
On/off
OT
BL
RL
S EXT S ECS
2
4
1
PCU
M002726-A
5. Installation
CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX
CALORA TOWER GAS 35S EX
38
22/04/2016 - 300026141-001-07
