22
CARING FOR YOUR WATER HEATER
Draining the Water Heater (cont.)
Standard Drain Method
Service isolator valve kits may be purchased from the
manufacturer, distributor, or place of purchase. The
kits include two full-port isolation valves to be used
in the inlet and outlet water lines. These kits provide
a means for full diagnostic testing and ease of system
flushing.
Freeze Protection
WARNING: Failure to drain the water
heater can cause serious personal injury from scalding
and/or product damage.
Whenever the water heater may be exposed to freezing
conditions, make sure to completely drain the water
from the unit. See page 20.
Freezing conditions come from the ventilation system
on direct-vent models and from exposure to cold air on
outdoor models.
All of these water heaters are equipped with a freeze
protection electric heater. This heater prevents
freezing inside the water heater down to an ambient
temperature of approximately -30°F (-34°C). These
temperatures are all based on temperatures without
wind.
The heater only protects the internal components of
the water heater.
NOTICE: Unplugging or disconnecting the power
supply to the water heater will also disconnect the
power to the heater.
External piping and valves require additional
freeze protection. One method is to wrap insulation
around the piping and valves.
Another method is to turn on a hot water faucet and
leave a small amount of water running at a faucet.
This will protect the water heater, piping, and valves
from freezing.
Running Water Freeze Protection
Turn off the water heater by pressing the POWER
ON/OFF button on the control panel.
Close the gas shut-off valve(s).
Open a hot water faucet slightly until the water
stream is approximately 1/8 in. (0.3 cm). Be sure to
check the flow periodically.
Cold Water
Service Valve
Hot Water
Service Valve
Pressure
Relief Valve
Pressure
Relief Valve
Water
Outlet
Water
Outlet
Water
Inlet
Water
Inlet
Drain
Drain
1
2
3
Care Instructions
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