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69Part number 550-141-850/0699
• Installation • Start-Up • Parts • Maintenance
Troubleshooting — servicing tipsXId
Igniter
Wait several minutes until igniter
cools down before attempting
replacement. Failure to do so will
cause severe personal injury.
1. Disconnect igniter from igniter wiring harness and
remove igniter before removing blower assembly.
2. Replace igniter gasket if original gasket is frayed or
damaged.
3. Igniter is fragile - handle with care. Do not touch
igniter surface with bare hands. Body oils can cause
failure of the carbide.
Blower Housing
Do not disassemble blower housing.
A fire or explosion causing severe
personal injury, death or substantial
property damage can result. If you
suspect a problem, replace blower
housing. Follow instructions in
manual Section IX, Cleaning boiler
heating surfaces
for blower
housing removal and replacement.
85060
85061
Robertshaw
Model 7200DERN-680
White-Rodgers
Model 36E66-302
Gas Valve
Gas valve operates with a negative
pressure at the outlet —
approximately -0.2" w.c. — do not
set gas pressure higher than this.
Follow instructions in this manual
carefully if testing gas valve outlet
pressure. Failure to comply can result
in severe personal injury or death.
The gas valve outlet tapping is a left-
hand thread. Rotate counter-
clockwise to tighten, clockwise to
loosen. When replacing valve, replace
only with valve listed in this manual
for use with the GV boiler. Failure to
comply could result in severe
personal injury, death or substantial
property damage.
85062