whl-035 Rev. 002 Rel. 002 Date 11.1.17
13
NOTE: Repeat Steps 3 - 6 as Necessary for Multiple Elements
Step #8
- Open the main cold water inlet. If the water heater has
been isolated from the system, open the valves. Refill the tank with
cold water. Open a hot water faucet high in the system to bleed
any air pressure from the system. Water will flow freely when air is
completely bled.
When filling the water heater, open a hot water tap to release air
in the tank and piping. The tank must be full of water before the
heater is turned on. Failure to ensure the water heater is full before
turning it on will result in damage to the water heater, and could
result in property damage, serious personal injury, or death. Such
damages ARE NOT covered by water heater warranty.
Step #9
- Pressure check the tank for leaks around element. If no
leaks are found, use a Phillips Head screwdriver to connect the wires
to the element.
Step #10
- Turn power back on to the water heater.
Failure to refill the tank before restoring power to the water
heater will result in damage to the heating elements and property
damage. Such damages ARE NOT covered by warranty.
Part 7 - Maintenance
Considerations
•
To avoid electric shock, disconnect electrical supply before
performing maintenance.
•
To avoid severe burns, allow heater to cool before
performing maintenance.
NOTE:
In addition to the routine maintenance detailed in this
manual, this water heater should be inspected annually by a
qualified service technician to assure that all the equipment is
operating safely and efficiently. The owner should make necessary
arrangements with a qualified heating contractor for periodic
maintenance of the heater. Installer must also inform the owner
that lack of proper care and maintenance may result in a hazardous
condition, premature heater failure, and void the warranty.
Routine preventative maintenance ensure the water heater
operates safely and efficiently over its service life. The
Owner / User
may perform the maintenance activities described below.
Monthly (Every two weeks in hard water locations)
It is recommended that a few quarts of water be drained from the
heater. This will flush sediment deposits from the bottom of the
heater and lengthen the heater’s service life. Turn off power to
the heater during flushing operation, so the elements will not be
damaged.
Failure to shut off the heater when draining may damage the
heating elements. Operating a partially filled / empty water
heater could lead to damage from “dry-firing”. Failures due to such
damage ARE NOT covered by warranty.
To flush the tank, attach a hose to the field installed drain valve. Close
the cold water supply line shut-off valve. Open the drain valve and hot
water faucet(s) to vent heater while draining. Direct the flow of water
to a drain or bucket where it will not cause damage.
Flush until water runs clear to complete this operation. Close drain
valve and reopen the supply line shut-off valve. Close the hot water
faucet(s) once all air has been bled from the system (when water runs
freely). Make certain that the heater is completely full of water before
restoring power.
Periodically (At least twice a year)
Check around the water heater and related plumbing for leaks. If
the combination temperature and pressure relief valve discharges
periodically, or water is leaking from around the heating elements,
there may be a problem with your water system. DO NOT ATTEMPT
TO REPAIR LEAKS YOURSELF! Contact a qualified service contractor for
assistance.
Check the area around the water heater for flammable liquids or
combustible materials. If any are found, remove from the area.
Vacation (Extended shut-off periods)
During extended mild or warm weather periods when hot water will
not be in use, shut off the electric power to the tank. When hot water is
needed again, restore power to the water heater.
During extended cold weather periods when hot water will not be in
use and prone to freezing conditions, shut off electric power to the tank,
close the supply line shut-off valve, open the drain valve and drain the
water heater to a safe drainage location (as detailed previously). Once
drained, close the drain valve. When hot water is needed again, restore
the water supply to the tank. Once the tank is full, restore power.
Water drained from the water heater may be scalding hot. Take
care to avoid scalding. Wear gloves and safety glasses, and direct
water to a safe drainage location. It is recommended to turn
power off to the water heater and run water at a hot water faucet
until it cools BEFORE draining water from the heater. Failure to
comply with this warning could result in property damage, severe
personal injury, or death.
Water drained from the water heater may be scalding hot. Take care
to avoid scalding. Wear gloves and safety glasses, and direct water
to a safe drainage location. It is recommended to turn power off to
the water heater and run water at a hot water faucet until it cools
BEFORE draining water from the heater. Failure to comply with this
warning could result in property damage, severe personal injury, or
death.
The maintenance activities described below are only to be performed
by the
Installer / Qualified 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 flammable 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 off 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.
