Bradford White UCG100H399, Руководство по обслуживанию

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1 2 0 vo l t potent i a l e x posu r e . I so l ate the
app l i ance and r econf ir m powe r i s d i sconnected
us i ng a mu l t i - mete r .
WAR NIN G
S er vi c e P ro c e du re III :
B u r n er Tub e Insp e c ti o n and Re pla c e m e nt
B u r n er Tub e Re m o val P ro c e du re
S tep 1 . P os i t i on ma i n powe r sw i tch to “O FF ” .
S tep 2. D i sconnect ( unp l ug ) wate r heate r f r om 1 2 0 vo l t
powe r sou r ce .
S tep 3 . T u r n off gas supp l y to wate r heate r .
S tep 4. U n -l atch & r emove su rr ound cove r f r om top of
heate r .
S tep 5 . F r om the gas va l ve , d i sconnect the gas
connect i on , PVC i nta k e vent i ng , w ir e ha r ness
and s i l i cone tu b i ng .
S tep 6 . D i sconnect w ir e ha r ness f r om b l owe r assem b l y .
S tep 7 . Remove the two sc r ews ho l d i ng each the spa rk
r od and f l ame senso r i n p l ace ( l ong r each
magnet i c P h i ll i ps sc r ew d ri ve r ) . C a r efu ll y r emove
spa rk r od and f l ame senso r f r om com b ust i on
assem b l y .
S tep 8 . Remove the 4 nuts ( 7/16" w r ench ) ho l d i ng the
b u r ne r t r ans i t i on i n p l ace . Li ft the b l owe r/ gas
va l ve t r ans i t i on assem b l y f r om b u r ne r mount i ng
i nse r t , r emove gas k et and set as i de .
S tep 9 . Remove b u r ne r tu b e f r om b u r ne r mount i ng i nse r t .
S ee ne x t page fo r b u r ne r tu b e i nspect i on p r ocedu r e .
H eate r components may b e H O T when pe r fo r m i ng the fo ll ow i ng steps i n th i s p r ocedu r e . T a k e necessa r y p r ecaut i on
to p r event pe r sona l i n j u r y .
WAR NIN G
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