Instructions / Assembly

lp-547 Rev. 1.29.16
13
The maintenance activities described below are only to be
performed by the Installer / Qualied Service Provider.
These maintenance items should be performed during
recommended annual service and any service calls.
1. Ask the owner / user if there have been any issues with the
water heater. Diagnose any heater issues and repair / replace
parts as necessary.
2. Check the water heater and related plumbing for leaks.
Repair any that are found.
3. Check the area around the water heater for ammable
liquids or combustible materials. If any are found, remove
from the area.
4. Check the heating elements while the heater is in operation.
If the elements are hissing / singing excessively, they may need
to be cleaned. Inspect the elements and clean if necessary.
5. Inspect the Temperature and Pressure (T&P) Relief Valve.
See instructions below.
6. Turn power supply o to the water heater. Open the drain
valve and drain a few gallons of water from the tank to clear
any hard water deposits. Once complete, close the drain valve
and restore power to the water heater.
T&P Relief Valve Maintenance Instructions:
• Annually: Certain naturally occuring mineral deposits
may adhere to the valve, blocking waterways and
rendering the valve inoperative. The T&P Relief Valve
lever must be operated to ensure the waterways are
clear. If waterways are clear, hot water will discharge
from the valve. Take precautions to avoid personal
injury and property damage from contact with hot
water. Before operating lever, check to see that a
discharge line is connected to the valve, directing the
ow of hot water from the valve to a proper place of
disposal.
• Replacement of the valve is required if no water ows
when the lever is operated. Turn the water heater o
until the valve is replaced.
• If water ows from the valve, drain a few gallons from
the tank to ensure the water ows freely.
• At least once every three years: To ensure that the
T&P valve has not been aected by corrosive water
conditions and that the valve and discharge line have
not been altered or tampered with illegally, relief
valves should be inspected, and replaced, if necessary,
by a licensed plumbing contractor or qualied service
technician.
Failure to comply with these guidelines could result in
failure of relief valve operation, and possibly result in
substantial property damage, severe personal injury, or
death.
Figure 7 - Replacement Parts - Staged Operation