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If after manually operating the valve, it fails to completely reset and
continues to release water, immediately close the cold water inlet to the
water heater, follow the draining instructions, and replace the
temperature-pressure relief valve with a new one.
FIGURE 106.
FILLING THE WATER HEATER
Never use this water heater unless it is completely full of water. To
prevent damage to the tank, the tank must be filled with water. Water
must flow from the hot water faucet before turning “ON” gas to the
water heater.
To fill the water heater with water:
1. Close the water heater drain valve by turning the handle to the
right (clockwise). The drain valve is on the lower front of the
water heater.
2. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open when
the water heater is in use.
3. To insure complete filling of the tank, allow air to exit by opening the
nearest hot water faucet. Allow water to run until a constant flow
is obtained. This will let air out of the water heater and the piping.
4. Check all water piping and connections for leaks. Repair as needed.
GAS PIPING
Make sure the gas supplied is the same type listed on the model rating
plate. The inlet gas pressure must not exceed 14 inch water column (2.6 kPa)
for natural and propane gas (L.P.). The minimum inlet gas pressure
shown on the rating plate is that which will permit firing at rated input.
If the gas control valve is subjected to pressures exceeding 1/2 pound
per square inch (3.5 kPa), the damage to the gas control valve could
result in a fire or explosion from leaking gas.
If the main gas line Shut-off serving all gas appliances is used, also turn
“off” the gas at each appliance. Leave all gas appliances shut “off” until
the water heater installation is complete.
A gas line of sufficient size must be run to the water heater. Consult the
current edition of National Fuel Gas Code ANSI Z223.1/NFPA 54 and your
gas supplier concerning pipe size.
There must be:
• A readily accessible manual shut off valve in the gas supply line serving
the water heater, and
• A drip leg (sediment trap) ahead of the gas control valve to help prevent
dirt and foreign materials from entering the gas control valve.
• A flexible gas connector or a ground joint union between the shut off
valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the water
heater. Use a soapy water solution, not a match or open flame. Rinse
off soapy solution and wipe dry.