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GENERAL
Refer to the Features and Components section of this manual
for the location of components mentioned in the instructions that
follow.
NEVER operate the heating elements without being certain the
water heater is filled with water, and a temperature and pressure
relief valve is installed in the relief valve opening on top of the
heater.
Some models will be equipped with an optional LWCO (low water
cut off). The water probe is installed in the storage tank. See the
illustrations in "Features and Components" on page 7 for the
location. The control system will declare a Fault condition and
lock out (de-energize contactor coils and heating elements) if the
water level is below this point.
The pilot switch (power on/off toggle switch) on the cabinet front
permits the heater to be turned on and off without having to operate
the electrical disconnect switch.
Optional manual override switches on the cabinet front allow
elements to be manually de-energized if full capacity is not needed.
FILLING THE WATER HEATER
To fill the water heater with water:
1.
Turn off the electrical disconnect switch.
2.
Turn off pilot toggle switch.
3.
Close the heater drain valve.
4.
Open a nearby hot water faucet to allow the air in the
system to escape.
5.
Fully open the cold water inlet valve, filling the heater and
piping.
6.
Close the hot water faucet when water starts to flow from
the faucet. Leave the cold water inlet valve fully open. The
heater is now ready for start up and temperature regulation.
7.
Close the cabinet door and perform start up checks listed
below before turning on the electricity.
OPERATION
INITIAL START UP
The following checks should be made by the installer when the
water heater is placed into operation for the first time:
1.
Check all factory and field made water and electrical
connections for tightness. Also check connections on top
of the heater. Repair water leaks and tighten electrical
connections as necessary.
2.
Turn on the electrical disconnect switch and pilot toggle
switch. The pilot toggle switch is located on cabinet.
3.
Observe the operation of the electrical components during
the first heating cycle. Use care as the electrical circuits
are energized.
Temperature control and contactor operation should be checked
by allowing heater to come up to temperature and shut off
automatically. USE CARE AS THE ELECTRICAL CIRCUITS
ARE ENERGIZED.
DRAINING THE WATER HEATER
The water heater must be drained if it is to be shut down and/
or exposed to freezing temperatures. Maintenance and service
procedures may also require draining the heater.
1.
Turn off the electrical disconnect switch.
2.
Turn off pilot toggle switch.
3.
Open a nearby hot water faucet until the water is no longer hot.
4.
Close the cold water inlet valve to heater.
5.
Open drain valve.
6.
If the heater is being drained for an extended shutdown, it is
suggested the drain valve be left open during this period.
Follow FILLING instructions when restoring hot water service.
See the list above.
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