Weil-McLain LGB COMMERCIAL GAS BOILER LGB-20 User Manual

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Part Number 550-141-186/0914



LGB

3ERIES'AS&IRED"OILER"OILER-ANUAL

!

A

!

A

See Figure 24.

 Proper pilot ﬂame:

a. Blue ﬂame.

b. Inner cone engulﬁng sensor.

2. Improper pilot ﬂame:

a. Overﬁred — ﬂames large and lifting or blowing

past sensor.

B 5NDERlREDmAMESSMALLSENSORNOTENGULFED

by inner cone.

See Figure 25.

 #HECKMAINBURNERmAMESATLEASTONCEAMONTHDURINGHEATINGSEASON

2. Proper burner ﬂame:

a. Yellow-orange streaks may appear - caused by dust.

3. Improper ﬂame:

a. Overﬁred — Flames large.

b. Underﬁred — Flames small.

C ,ACKOFPRIMARYAIR9ELLOWTIPPINGONmAMESSOOTINGWILLOCCUR

+/

Typical pilot



+0

Typical main



10c

Maintenance — procedures

The boiler contains ceramic ﬁber and ﬁberglass materials. Use care when

handling these materials per instructions on page 28 of this manual. Failure

to comply could result in severe personal injury.





 -AKESUREBASEINSULATIONISSECUREAGAINSTALLFOURBASEPANELS

If base insulation material is damaged or displaced, call service technician

immediately. Do not operate boiler. Operating boiler with damaged or

displaced base insulation can result in severe personal injury, death or

substantial property damage.

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Weil-McLain LGB COMMERCIAL GAS BOILER LGB-20