PAGE 18
Continue to hold the gas control knob or reset button in for about 1 minute after the pilot is
lit. Release knob or button, and it will pop back up. Pilot should remain lit. If it goes out, repeat
steps 5 through 9.
* If knob or button does not pop up when released, stop and immediately call a
qualified service technician or your gas supplier.
* If the pilot will not stay lit after several tries, turn the gas control knob clockwise
to "OFF". (See note #1), and call a qualified service technician or your gas supplier.
10. Replace burner door.
11. Turn gas control knob counterclockwise
to "ON".
12. Replace access panel (if present).
13. Turn on all electric power to the appliance.
14. Set thermostat to desired setting.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be performed.
3. Remove control access panel (if present).
4. Push in gas control knob slightly and turn clockwise
to "OFF",
DO NOT
FORCE.
5. Replace control access panel (if present).
6. Call a qualified service technician.
NORMAL SEQUENCE OF OPERATION
For a single module the thermostat will actuate, completing the circuit to the aquastat.
The completed circuit to the aquastat will first activate the circulator and damper. When the
damper is fully open it will complete the circuit to the ignition system and ignition will take
place.
In the event the boiler water temperature exceeds the high limit setting on the boiler
mounted aquastat, power will be interrupted between the aquastat and the ignition system.
The power will remain off until the boiler water temperature drops below the high limit
setting. The circulator will continue to operate under this condition until the thermostat is
satisfied.
In the event the flow of combustion products through the boiler venting system becomes
blocked, the blocked vent safety switch will shut the main burner gas off. See figure 11, page
19. Similarly, if the boiler flueway becomes blocked, a flame rollout safety switch will shut
the main burner gas off. See figure 11, page 19. If either of these conditions occur,
do not
attempt to place the boiler back into operation. Contact a qualified service agency.
Содержание MAGB
Страница 6: ...PAGE 5 TYPICAL LAY OUTS FOR GAS FIRED SYSTEMS ...
Страница 7: ...PAGE 6 SUPPLY AND RETURN PIPING ...
Страница 24: ...PAGE 23 FIGURE 16 PHASE 2 CONTROL LOCATIONS AND WIRING ...
