Dismounting Control Panel:
Detach the connecting
terminal of the room thermostat, and ignition and
ionization cables Mounted to the notches on the control
panel. Open the cover by unlatching the notches of the
control panel.
Main Board connections:
Each of the sockets
required to be Mounted on the main board are shown in
the photo below.
X4
X3
X5
X9
X7
X1
X10
X11 X12
CN1
X6
X2
TR1
CONNECTOR
NAME
FUNCTION
X1
Condensate Trap
X2
Earth
Outdoor Temperature Sensor
X3
OpenTherm (3.0) / Room Thermostat
Program Timer
DC Gas valve
X4
Fan Driver Interface
Flue Sensor Input
DHW Instantaneous Sensor
DHW Storage Tank Sensor
X5
DHW Solar Storage Tank TOP Sensor
DHW Thermostat (Storage Tank)
Supply sensor
Return sensor
MicroCom and uP Flash
X6
Programming Connector
WP Sensor/Switch
X7
PWM Supply Pump
DHW Flow Sensor/Switch
X9
Not Used
X10
3Way Valve
X11
Fan Power Supply
Supply Pump Power Supply
X12
Main Power Supply
CN1
Op�
onal Solar Panel PCB
Table
1
1
.
Main Board Connections
44