Weil-McLain SERIES 7 PFG - Manual (Page 7)

7
PFG S
erieS
7 G
aS
-
Fired
W
ater
B
oiler
– U
niverSal
C
ontrol
S
yStemS
Part Number 550-110-643/0605
1. See Figure 5 for operating instructions page numbers. Raise
room thermostat to call for heat. Damper actuator will slowly
open damper (if provided).
2. When damper (if provided) is fully open, ignition control
powers spark generator and opens pilot valve.
Damper must be in open position when
appliance main burners are operating.
If damper is not in open position, flue
products will escape into house, causing
severe personal injury or death.
3. a. If pilot does not light within 15 seconds, pilot valve is closed
and spark generator is turned off. The ignition control initi -
ates a five minute wait period. If call for heat exists after
five minutes, ignition sequence starts at Step 2.
b. If pilot lights and ignition control senses flame current,
main valve opens and spark generator is turned off.
4. During main burner operation:
a. Ignition control monitors pilot flame current. If signal is
lost, main valve is closed, spark generator activated, and
sequence returns to Step 3.
b. If power is interrupted, the control system shuts off pilot
and main gas valves and restarts at Step 1 when power is
restored.
5. Thermostat is satisfied: pilot and main gas valves are closed.
Damper (if provided) will close.
6. Boiler is now in the off cycle.
7. Repeat steps 1-6 several times to verify operation.
8. Return thermostat to normal setting.
9. Set thermostat heat anticipator setting indicated in notes on
wiring diagram.
Figure 5
Section C: Check-Out