Supplied By www.heating spares.co Tel. 0161 620 6677
32
FUNCTIONAL DIAGRAM
NOTE. L-N-E CONNECTION MUST NOT BE INTERCHANGED
Key
R.T.
Room thermostat
F
Fan
P
Pump
S1
Flow thermistor (NTC)
S2
Return thermistor (NTC)
S3
D.H.W. thermistor (NTC)
L1
Led OK (green)
Fig. 36
L2
Led alarm (blink red)
F1
Fusibile 2 AF
F.se/I.E.
Spark/sense electrode
OPE
Gas valve solenoids
3W
3 way valve
RL3V
3 way relay
P.S.
Pressure switch (NC)