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water boiler
Annual service and start-up
Check 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 relief valve, ensure that it is piped
with its discharge in a safe area to avoid severe scald
potential. Read page 1 regarding relief valves before
proceeding further.
Part number 550-141-986/1005
— Boiler Manual
Safety relief valves should be reinspected
at least once every three years
licensed plumbing contractor or autho-
rized 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 inopera-
tive. 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 per-
sonal injury, death or substantial property
damage.
Following installation, the valve lever must
at least once each year
be operated
ensure that waterways are clear. Certain
naturally occurring mineral deposits may
adhere to the valve, rendering it inopera-
tive. 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 oper-
ating 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.
(continued)
. After following the 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.
Check all boiler wiring
Inspect all boiler wiring, making sure wires are in good
, by a
condition and securely attached.
Check control settings
1. Check boiler limit control setting, Adjust if neces-
sary.
. Check settings of external limit controls (if any) and
adjust if necessary.
to
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