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GSA
Gas-Fired Steam Boilers –
Boiler Manual
24
Part Number 550-110-738/1012
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Check/test . . . . . . . . . .
Boiler relief valve
1. After following the warning directions below, if the relief valve
weeps or will not seat properly, replace the relief valve.
Before testing, make certain discharge pipe is
properly connected to valve outlet and arranged to
contain and safely dispose of boiler discharge. Wear
gloves to protect your hands from hot surfaces. Verify
that discharge piping is installed in accordance with
this manual and the instructions on the relief valve
tag. Failure to comply will expose operator and
others to severe personal injury or death.
Safety relief valves should be reinspected AT LEAST
ONCE EVERY THREE YEARS, by a licensed
plumbing contractor or authorized inspection agency,
to ensure that the product has not been affected by
corrosive water conditions and to ensure that the
valve and discharge line have not been altered or
tampered with illegally. Certain naturally occurring
conditions may corrode the valve or its components
over time, rendering the valve inoperative. Such
conditions are not detectable unless the valve
and its components are physically removed and
inspected. This inspection must only be conducted
by a plumbing contractor or authorized inspection
agency — not by the owner. Failure to reinspect
the boiler relief valve as directed could result
in unsafe pressure buildup, which can result in
severe personal injury, death or substantial property
damage.
Check the setting of the boiler limit control. The
control should never be set with a pressure above
10 psig. Operating at a higher pressure can cause
damage to the boiler relief valve.
The boiler relief valve must be tested at least
monthly during the heating season to verify the
valve and discharge piping flow freely. If corrosion
and/or deposits are noticed within the valve body,
testing must be performed more often. A “try lever
test” must also be performed at the end of any
non-service period. Follow the instructions below
for a “try lever test”:
• With the system at operating pressure, lift and hold
the test lever fully open for at least 5 seconds to flush
the valve seat free of sediment and debris. Then
release lever and permit the valve to snap shut.
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Review with owner
1. Review the User’s Information Manual with the owner.
2. Emphasize the need to perform the maintenance schedule
specified in the User’s Information Manual (and in this manual
as well).
3. Remind the owner of the need to call in a licensed contractor
should the boiler or system exhibit any unusual behavior.
4. Remind the owner to follow the proper shutdown procedure
and to schedule an annual start‑up at the beginning of the
next heating season.
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Cleaning boiler heating surfaces
The boiler contains ceramic fiber and fiberglass
materials. Use care when handling these materials
per instructions on page 25 of this manual. Failure
to comply could result in severe personal injury.
1. Shut down boiler — Follow “To Turn Off Gas to Appliance”
instructions on boiler and Operating Instructions.
2. Disconnect breeching and remove damper and draft
hood.
3. Remove upper rear jacket panel. Turn back jacket insulation
to expose collector hood.
4. Remove collector hood. Clean excess boiler cement from
collector hood and cast iron sections.
5. Remove burners from base of boiler. Follow “Burners and
base” on page 22, to thoroughly clean burners. Place
newspaper in base of boiler to collect soot that will fall.
6. With a wire flue brush, clean between the sections.
7. Remove p
aper and soot. Vacuum or brush base and
surrounding
area.
8. Replace collector hood. Seal with boiler cement.
9 Service and maintenance
continued