Weil-McLain LGB-5 - Manual (Page 6)

LGB LGB LGB LGB LGB-4 -4 -4 -4 -4 & 5 5 5 5 5 • Control Supplement • UCS • Propane
6 Part Number 550-141-919/0304
A. This boiler is equipped with a pilot which must be lighted by hand. When lighting the
pilot, follow these instructions exactly. The gas supply to this pilot is controlled by the
Pilot Switch Box. This boiler is also equipped with an ignition device which automatically
lights a second pilot. The gas supply to this pilot is controlled by the Gas Control. Do not
try to light this pilot by hand.
B. BEFORE LIGHTING THE MANUAL PILOT, smell all around the appliance area for
gas. Be sure to smell next to the floor because some gas is heavier than air and will settle
on the floor.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electric switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
If you cannot reach your gas supplier, call the fire department.
C. Use only your hand to turn the gas control knob. Never use tools. If the knob will not
turn by hand, don't try to repair it, call a qualified service technician. Force or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has been under water. Immediately call a qualified
service technician to inspect the appliance and to replace any part of the control system
and any gas control, which has been under water.
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electrical power to the appliance.
4. Remove the Base Access Shield.
5. Close Pilot Shutoff Valve connected to Gas Hand Valve. Close Gas Hand
Valve.
6. Wait five (5) minutes to clear out any gas. Then smell for gas, including
near the floor. If you smell gas, STOP! Follow "B" in the safety
information above. If you don't smell gas, go to the next step.
7. Open Pilot Shutoff Valve.
8. Press and hold the reset lever on the Pilot Switch Box. Manually light
the pilot while holding the lever down. Air in the gas supply line will
have to purge through the line before sufficient gas will reach the pilot.
9. After purging all air, hold the Pilot Switch Box lever for about 1 minute
to heat the thermocouple.
10. Release the Pilot Switch Box lever. The pilot should remain lit.
11. Open the Gas Hand Valve and follow the sequence below.
12. This appliance is also equipped with an ignition device which
automatically lights the second pilot. Do not try to light this pilot by
hand.
13. Turn Gas Control knob clockwise to "OFF".
14. Wait five (5) minutes to clear out any gas. Then smell for gas, including
near the floor. If you smell gas, STOP! Follow "B" in the safety
information above on this label. If you don't smell gas, go to the next
step.
15. Turn Gas Control knob counterclockwise to "ON".
16. Turn on all electric power to the appliance.
17. Set thermostat to desired setting.
18. If the appliance will not operate, turn off gas to the boiler by closing the Gas Hand Valve and Pilot Shutoff
Valve. Rotate the Gas Control knob clockwise to “OFF”. Call your service technician or gas supplier.
19. Replace Base Access Shield and Front Panel.
Starting
boiler
IV
Operating instructions