GSA
Gas-Fired Steam Boilers –
Boiler Manual
23
Part Number 550-110-738/0703
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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.
The boiler contains ceramic fiber and fiberglass
materials. Use care when handling these materials
per instructions on page 32 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
“Lighting Instructions”.
2. Disconnect breeching and remove damper and draft diverter.
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 21, 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 paper and soot. Vacuum or brush base and
surrounding area.
8. Replace collector hood. Seal with boiler cement.
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Cleaning boiler heating surfaces
11 Service and maintenance
continued