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WALL MOUNT GAS-FIRED WATER BOILER — Boiler Manual
33 Maintenance (continued)
&IGURE)NSPECTIONANDREMOVALOFBURNERANDGASKET
Figure 138)NSPECTINGINTERIORANDCLEANINGTHEBURNER
4. 2EMOVETHEBURNERANDBURNERGASKETFROMTHEHEAT
EXCHANGERCOVERPLATEIFSTILLINPLACE$ONOTLETFRAGMENTS
DROPINTOTHEHEATEXCHANGERIFTHEGASKETPULLSAPARTDUR-
ing removal. Replace the gasket with a new one during
reassembly.
5. Inspect the burner gasket. Discard and use a new gasket
DURINGREASSEMBLYIFTHEGASKETISDAMAGEDINANYWAY
6. )NSPECTTHEINTERIOROFTHEBURNER"RUSHANDVACUUMTHE
INTERIORIFNEEDEDTOREMOVELINTORSEDIMENT!LTERNATIVE
CLEANINGMETHODSsBLOWAIRORNITROGENFROMTHEINSIDE
OUTsCLEANWITHAWATERSPRAYFROMINSIDETHEBURNERs
SWIRLTHEBURNERTHOROUGHLYINABUCKETOFMILDLIQUID
laundry detergent water, then rinse thoroughly.
7. Inspect the burner exterior. It must be in good condition,
with no visible damage.
8. #LEANTHEUNDERSIDEOFTHEBURNERmANGEWITHASOFTBRUSH
TOREMOVEANYGASKETFRAGMENTSREMAINING
9. 2EINSTALLSPRINGIFREMOVED
10. Reinstall the burner and burner gasket to heat exchanger
cover plate.
11. Reinstall exchanger cover plate and gasket to heat
exchanger.
12. 4IGHTENTHEHEATEXCHANGERCOVERPLATESlVEMM
nuts using a torque wrench. The nuts must be secure, but
the torque must not exceed 20 inch-pounds
0ERFORMACOMPLETESTARTUPPROCEDUREWHENPUT-
ting the boiler back into service. See page 67 and all
INSTRUCTIONSFORSTARTUPANDVERIlCATION)NCLUDEA
soap suds leak test on all interior and exterior gas
PIPINGAFTERSTARTINGTHEBOILER
Figure 139)NSPECTINGEXTERIORANDCLEANINGTHEBURNER