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Operation
GENERAL
Never turn on power to the water heater without being certain the
water heater is filled with water, and a temperature and pressure
relief valve is installed in the relief valve opening.
DO NOT TEST ELECTRICAL SYSTEM BEFORE HEATER IS
FILLED WITH WATER. FOLLOW FILLING AND START-UP
INSTRUCTIONS IN OPERATION SECTION.
FILLING
1.
Turn off the electrical disconnect switch.
2. Close the water heater drain valve by turning hand wheel to
right (clockwise).
3. Open a nearby hot water faucet to permit the air in the system
to escape.
4. Fully open the cold water inlet pipe valve allowing the heater
and piping to be filled.
5. Close the hot water faucet as water starts to flow. The heater
is now ready for STARTUP and TEMPERATURE
REGULATION.
STARTUP
The following checks should be made by the installer when the
heater is placed into operation for the first time.
1.
Turn off the electrical disconnect switch.
2. Open the front panel, check all water and electrical connections
for tightness. Also check connections on top and side of heater.
•
Repair water leaks and tighten electrical connections as
necessary.
3. Depress red button on manual reset high limit switches.
4. Turn on the electrical disconnect switch.
5. Observe the operation of the electrical components during
the first heating cycle. Use care as the electrical circuits are
energized.
Maintenance
GENERAL
Periodically the drain valve should be opened and the water
allowed to run until it flows clean. This will help to prevent sediment
buildup in the tank bottom.
Periodically check the temperature and pressure relief valve to
ensure that it is in operating condition. Lift the lever at the top of
the valve several times until the valve seats properly and operates
freely.
THE WATER PASSING OUT OF THE VALVE DURING THIS
CHECKING OPERATION MAY BE EXTREMELY HOT.
CAUTION
•
Thermostat operation may be checked by (a) manually
operating thermostat(s) and (b) allowing the heater to come
up to temperature and shut off automatically.
6. Close the front panel.
HIGH TEMPERATURE LIMITING DEVICE
The heater control circuit contains a high temperature cutoff switch.
This device automatically shuts off the heating elements if
excessive water temperatures, near the steam point, are reached.
The high temperature cutoff contacts open at 190°F and must be
manually reset (after a 30°F drop in water temperature).
The water heater must be drained if it is to be shut down and
exposed to freezing temperatures. Maintenance and service
procedures may also require draining the heater.
1. Turn off the electrical disconnect switch.
2. Close the supply water inlet valve to heater.
3. Attach hose to outlet opening of drain valve and direct end to
drain.
4. Open a nearby hot water faucet and the heater drain valve.
5. If the heater is being drained for an extended shutdown, it is
suggested the drain valve be left open during this period. The
hose may be removed.
•
Follow FILLING instructions when restoring hot water service.
CIRCULATING PUMP
Where the water heating system includes a field installed
circulating pump, it must be lubricated before being operated.
The tube of lubricant supplied with the pump includes directions
for use.
The circulating pump should be of all bronze construction.
Water heater maintenance includes periodic tank flushing and
cleaning, and removal of lime scale from the heating element.
The heater tank is equipped with an anode rod to aid in corrosion
control.
Anode inspection must be performed periodically based on
experience (or at least annually) to check the rod diameter and
determine if replacement is necessary. The anode is initially
about 13/16" to 7/8" diameter with an approximate 1/8" diameter
wire in the center of the rod. The anode should be replaced
when the 1/8" diameter wire is visible as it has been expended
in the control of corrosion. Your dealer should be contacted for
anode inspection.
22
DRAINING
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