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Water Supply Connections Continued
NOTICE: The pipes MUST be completely drainable. If the hot water faucets are located at a point higher
than the water heater, place a drain valve at the lowest point (see illustration to the bottom left).
Gas Supply
WARNING: Do not attempt to convert this water heater for use with a different type of gas
other than the type shown on the rating plate. Such conversion could result in hazardous operating
conditions. Please have a professional connect the gas pipe.
10
If a water heater is installed in a closed water supply system, such as one
having a backflow preventer in the cold water supply line, means shall be
provided to control thermal expansion. Contact the water supplier or local
plumbing inspector on how to control this situation. Install a shutoff valve
near the inlet of the water heater for service and draining purposes.
Before connecting the water supply pipe to the water heater, open
the shutoff valve ·and clean out sand, debris, air, caulking material,
etc. inside the pipe. Connect to the water inlet, then check water flow.
Close the shutoff valve and clean the water filter.
Be sure to connect the water inlet and the hot water outlet as shown
on the water heater. If reversed, the water heater will not function.
Installation of unions or flexible copper connections are
recommended on the HOT and COLD water lines, so that the water
heater may disconnect easily for servicing if necessary.
Install a Check Valve between the water heater and the water
shutoff
valve. (See illustration to the top left).
In regards to the HOT WATER OUTLET:
Connections between the water heater and point(s) of use should be
as short and direct as possible.
DO NOT use lead or non-approved plastic pipe.
NOTICE: The flow rate of hot water may vary when more than two
faucets (appliances, fixtures, etc.) are being used simultaneously.
A Manual Gas Appliance Shutoff
Valve must be installed at the gas
connection of the water heater at the
time of installation (see diagram to
the left). The branch gas supply line to
the water heater should be clean black
steel pipe or other approved gas piping
material.
A ground joint union or ANSI design
certified semi-rigid or flexible gas
appliance connector should be
installed in the gas line close to the
water heater. The National Fuel Gas
Code (NFGC) mandates a manual gas
shut-off valve: See (NFGC) for complete
instructions.
If flexible connectors are used, the
maximum length shall not exceed 36".
If lever type gas shut offs are used,
they shall be T-Handle type.
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Compound used on the threaded
joints of the gas piping must be of
the type resistant to the action of LP
gas. Use compound sparingly on male
threads only.
A sediment trap should be installed
at the bottom of the gas line.
Do not use excessive force (over
31.5 ft lbs.) in tightening the pipe,
particularly if pipe-tape compound
is used, as the unit may be damaged.
The inlet gas pressure to the water
heater must not exceed 10.5 " w.c.
for natural or 14" w.c. for LP gas. For
purposes of input adjustment, the
minimum inlet gas pressure (with
main burner on) is shown on the
water heater rating plate. If high or
low gas pressures are present, contact
your gas supplier for correction.
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