IBC SL Series Installation & Operating Manual page 81

Boiler
Component
needed.
Check the water pressure. Pressure should be stable
when the boiler is firing and the water temperature is
rising.
If pressure rises sharply, consider replacement of
expansion tank.
Check also for noise at high fire, which may signal water
quality problems.
Water chemistry shall be of a quality generally accepted
as suitable for hydronic applications.
Ensure any direct "city fill" water connections are left in
the closed position to minimize exposure to leaks and
flooding.
Relief valve -
maintenance
and testing
The relief valve manufacturer requires that under
normal operating conditions a "try lever test" must be
performed every two months.
Under severe service conditions, or 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.
Test at or near the maximum operating pressure by
holding the test lever fully open for at least 5 seconds to
flush the valve seat free of sediment and debris. Then
release the lever and allow the valve to snap shut.
If the lever does not activate, or if there is no sign of
discharge, discontinue use of equipment immediately
and contact a licensed contractor or qualified service
personnel.
If the relief valve does not completely seal, and fluid
continues to leak from the discharge pipe - perform the
Maintenance Required
Caution
Before testing the relief valve, ensure the
discharge pipe is properly connected to the
valve outlet and arranged to contain and
safely dispose of equipment discharge.
77
7.2.2 General boiler maintenance
Frequency Check
□
Annually
□
Annually
□
Annually
□
Annually
□
Annually