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Part number 550-110-260/0107
41
GOLD CGs Gas-Fired Water Boiler — Boiler Manual
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 detect-
able 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.
Following installation, the valve lever must be operated AT LEAST
ONCE A YEAR to ensure that waterways are clear. Certain naturally
occurring mineral deposits may adhere to the valve, rendering it in-
operative. When manually operating the lever, water will discharge
and precautions must be taken to avoid contact with hot water and
to avoid water damage. Before operating lever, check to see that a
discharge line is connected to this valve directing the flow of hot water
from the valve to a proper place of disposal otherwise severe personal
injury may result. If no water flows, valve is inoperative. Shut down
boiler until a new relief valve has been installed.
Boiler relief valve
1. Inspect the relief valve and lift the lever to verify flow as in the following warnings,
excerpted from a relief valve manufacturer’s warning label. Before operating any re-
lief valve, ensure that it is piped with its discharge in a safe area to avoid severe scald
potential. Read manual Section 3 before proceeding further.
2. After following the above warning directions, if the relief valve weeps or will not seat
properly, replace the relief valve. Ensure that the reason for relief valve weeping is the
valve and not over-pressurization of the system due to expansion tank waterlogging
or undersizing.
Figure 23 Relief valve, typical