Viii- Maintenance - Bradford White DW280L Installation & Operating Manual

Double-wall indirect-fired water heater
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Operating Instructions continued-
Adjusting to a lower temperature setting will not immediately
affect water temperature. Draw sufficient water or allow the water
heater to remain idle until a heat-up cycle is initiated. After the
heater's heat-up cycle is complete, check the water temperature at
a faucet to determine if further adjustment is necessary.
Adjusting to a higher temperature may not immediately affect
water temperature. If a heat-up cycle begins, allow the heat-up
cycle to complete before checking the water temperature. If a
heat-up cycle does not begin, draw sufficient water or allow the
water heater to remain idle until a heat-up cycle is initiated. After
the heater's heat-up cycle is complete, check the water temperature
at a faucet to determine if further adjustment is necessary.
This indirect-fired water heater is intended to provide a service life
of many years. Components that require service, however, may be
subject to failure. Failure to use the correct procedures or parts in
these circumstances may make the water heater unsafe.
The owner should arrange to have the following inspections and
simple maintenance procedure performed by qualified service
personnel at the frequencies suggested.
1. Boiler and Domestic Water Piping (Annual) – Check all
piping for signs of leakage at joints, unions, and shut-off
valves. Repair as needed.
2. Temperature-Pressure Relief Valve (Annual)- The
temperature-pressure relief valve should be checked to ensure
that it is in operating condition. To check the relief valve, lift
the lever at the end of the valve several times. The valve
should seat properly and operate freely. If water does not flow,
remove and inspect for obstructions or corrosion. Replace
with a new valve of the recommended capacity as necessary.
Do not attempt to repair the valve, as this could result in
improper operation and a tank explosion. In areas with poor
water conditions, it may be necessary to inspect the
temperature-pressure relief valve more often than once a year.
Maintenance continued-
SECTION VIII
MAINTENANCE
29

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