Filling The Water Heater; Gas Connections - Giant UG50 series Owner's Manual

INSTALLATION INSTRUCTIONS

Filling the Water Heater

WARNING
NEVER operate the water heater unless it is completely
filled with water. Failure to follow this instruction
can result in premature failure of the water
heater that is not covered by the warranty.
Check that all of the water piping connections have been
made. To fill the water heater:
1) Make sure that the water heater drain valve is closed by
inserting a flat head screwdriver into the slot on the head
of the drain valve and turning the knob clockwise
2) Open the cold water supply manual shut-off valve. This
valve must remain open, as long as the water heater is
in use. NEVER operate the water heater with the cold
water supply manual shut-off valve closed.
3) To make sure the water heater is completely full of water,
open all of the hot water faucets in the house to let the air
out of the water heater and plumbing system. Leave the
faucets open until a constant flow of water is obtained.
4) Check all of the plumbing connections to make sure
there are no leaks.

Gas Connections

WARNING
DO NOT attempt to use this water heater with any gas
other than the type of gas shown on the water heater rat-
ing plate. Failure to follow this instruction can result in
property damage, personal injury, or death.
The gas piping must be installed as indicated in Figure 8.
For the correct size of piping for this water heater, consult
the latest edition of CAN/CSA B149.1, National Gas and
Propane Installation Codes, in Canada, and/or the latest
edition of the National Fuel Gas Code, ANSI Z223.1/NFPA
54, in the United States. Only new piping with cleanly
cut threads may be used, together with a suitable sealing
compound that is approved for natural and propane gases.
It is mandatory that a readily accessible manual shut-off
valve be installed in the gas supply line. The gas supply
manual shut-off valve must be close to the water heater.
A drip leg (sediment trap) must be installed in the gas line
ahead of the gas control valve to prevent dirt from enter-
ing it. A union must be installed between the gas control
valve and the gas supply manual shut-off valve for easy
maintenance of the water heater.
NEVER use an open flame to test for gas leaks. A fire
or explosion could occur resulting in property damage,
personal injury, or death.
The water heater and its gas connection must
be leak tested before placing the appliance into operation.
To leak test the system:
1) Turn on the manual gas shut-off valve near the water
heater.
2) Use a soapy water solution to test all connections and
fittings for leaks. Bubbles indicate a gas leak.
. 3) Correct all leaks.
Make sure that the inlet pressure to the water heater does not
exceed 0.5 PSI (3.5 kPa) for both natural and propane gases.
Pressures in excess of 0.5 PSI (3.5 kPa) can damage the gas
control valve, resulting in a fire or explosion from leaking gas.
For purposes of adjustment, the minimum inlet pressure is
indicated on the water heater rating plate.
If any pressure testing of the gas line is undertak-
en at test pressures in excess of 0.5 PSI (3.5 kPa),
the water heater and its gas supply manual shut-
off valve must be disconnected from the gas supply
piping system, and the end of the pipe sealed with a female
cap. If the testing is to be undertaken at a test pressure less
than 0.5 PSI (3.5 kPa), the gas supply manual shut-off valve
must be closed.
U.L. and CSA recognized fuel gas and Carbon Monoxide
(Co) detectors are recommended in all applications and
should be installed using the manufacturer's instructions
and local codes, rules, or regulations.
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WARNING
WARNING