A ten-gallon water heater is the standard feature for the motorhome. The
water heater operates by using one of two methods. The first method is 120
Volts AC, supplied either by shore power or the on board generator. The 120
Volt AC uses a heating element like the one found in a house water heater. The
120 Volt AC method is the more efficient if shore power is available.
The second method uses LP-Gas. The LP-Gas incorporates the use of an
Automatic Ignition circuit board operated by 12 Volt DC. Two thermostats
control the water temperature: One for the 120-Volt and the other for the LP-Gas.
The water heater manufacturer presets the temperature of both thermostats.
The process for heating water is simple. Water is pumped into the bottom of
the water heater tank. LP-Gas, 120 Volt AC, or a combination of both, heats the
water. The heated water is discharged out of the top of the tank upon usage.
The water heater is equipped with a by-pass valve for easy winterization
and a Temperature Pressure Relief valve for safety. The water heater has
aluminum clad tank. An anode is not necessary.
NOTE: The automatic ignition circuit board will make three
attempts to light the burner. If the burner does not light by
the third attempt, the ignition circuit board will go into
"lock-out." Cycling the on/off switch will reset the ignition
board.
NOTE: Do not operate the water heater by either function
without water in the water heater tank. This can damage the
thermostats and the electric heating element.
Prior to using the water heater, purge all
trapped air from the water system. To purge the air
and pressurize the system, fill the fresh water tank
by using the on board water pump or hooking up
to city water. Check the tank for any obvious water
leaks. Once the system is pressurized, turn the hot
and cold valves on for each water faucet, one at a
time, inside and outside of the motorhome. Run
each faucet until a steady stream of water with no
air bubbles or air pockets are present. The water
heater does not need to be operating while in this
process. Locate the water heater bypass valve on
the back of the water heater; select the "Normal
Flow" position. While at the back of the water
heater ensure the small ON/OFF switch position is
set ON.
Appliances
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DIPLOMAT 4•123
WATER HEATER
Before Using the Water Heater
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