ASSEMBLY DIAGRAM
LEGEND
CiR
System circulating pump
PSG
Safety gas pressure switch
Air pressure switch
PA
PH
O
Water pressure switch
2
Ignition electrode
E.A.
E.R.
Detection electrode
Transformer
TRA
IG
Main switch
Gas valve 1-2
VG
M1
pa27 terminal board
3-way valve
VD
E/I
Summer/winter switch
TA
Room thermostat
TB
Water-heater thermostat
To connect the room thermostat TA, remove the bridge 1-2 from the M1 terminal board.
All manuals and user guides at all-guides.com
External sensor
SE
SR
Return sensor
Delivery sensor
SM
VN
Fan
X2
Amp. 13-pole connector
X3
Amp. 6-pole connector
X4
Amp. 2-pole connector
X7-X8 PC connector
3AT
Fuse 3A (electric fan)
Fuse 2A (24 V circuits)
2AF
2AF(F1) Power supply fuse 230 V (2 A)
230 V 50 Hz power lead
CL
C
Connector Wieland
Anti-interference filter
FA
40