Weil-McLain LGB-4 Control Supplement Download Page 6

Part Number 550-141-918/0304

LGB

LGB

LGB

LGB

LGB-4 

-4 

-4 

-4 

-4 

&

 5 

 5 

 5 

 5 

 5 

 Control Supplement 

 UCS 

 Nat. Gas

6

A.

This boiler is equipped with an ignition device which
automatically lights the pilot.  Do not try to light the pilot by
hand.

B.

BEFORE OPERATING

, smell all around the boiler 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 

Front Panel

.

5.

This appliance is also equipped with an
ignition device which automatically lights the
second pilot. Do not try to light this pilot by
hand.

6.

Close the firing valve and turn the 

Gas Control

knob clockwise to "OFF."

7.

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.

8.

Turn 

Gas Control

 knob counterclockwise to "ON,”then open the firing valve.

9.

Turn on all electric power to the appliance.

10. Set thermostat to desired setting.

11. If the appliance will not operate, close the firing valve and turn off gas to the boiler by

rotating the 

Gas Control

 knob clockwise to “OFF.” Turn off all electrical power. Call

your service technician or gas supplier.

12. Replace 

Front Panel

.

Starting

boiler

IV

Operating instructions

Summary of Contents for LGB-4

Page 1: ...6 Verification testing 7 Parts 8 These terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the...

Page 2: ...ilot burner See Figures 1a and 1b Follow Figure 1b for pilot burner location placing the burner with pilot bracket in the fourth position from the left for the LGB 4 and the fifth position from the le...

Page 3: ...eg at inlet of gas connection to boiler Where local code utility requires extend drip leg to floor 7 Install ground joint union when required for servicing 8 Support piping by hangers not by boiler or...

Page 4: ...Part Number 550 141 918 0304 LGB LGB LGB LGB LGB 4 4 4 4 4 5 5 5 5 5 Control Supplement UCS Nat Gas 4 III Wiring...

Page 5: ...1 The boiler must be electrically grounded according to the National Electrical Code ANSI NFPA No 70 latest edition Use 105o C thermoplastic wire or equivalent if any original wire must be replaced G...

Page 6: ...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 informatio...

Page 7: ...If the valve seals properly there should be no gas pressure present Remove manometer and hose barb and replace pipe plug in pressure tap 4 Remove the manometer and plug any open pressure taps 5 Follow...

Page 8: ...41 918 0304 LGB LGB LGB LGB LGB 4 4 4 4 4 5 5 5 5 5 Control Supplement UCS Nat Gas 8 Weil McLain 500 Blaine Street Michigan City IN 46360 2388 http www weil mclain com Figure 3 Control and gas compone...

Reviews: