10
GAS PIPING
Gas Connection
1) We recommend using only new black iron or steel pipe.
CHECK LOCAL CODES.
2) The gas supply line shall be sized and installed to provide a sufficient supply of gas to meet the maximum demand
of the heater without undue loss of pressure.
3) The sealant used on the threaded joints of the gas pipe must be a type resistant to the action of L.P.Gas. (This
sealant should be applied lightly to main threads to ensure excess sealant does not enter lines.)
4) The supply system must include a manual shut off valve and connection in the line, so the heater can be
disconnected for servicing. (See Figure 21).
5) Include a drip leg (trap) and a plugged 1/8” N.P.T. tapping in the line. The tapping should be accessible for test
gauge connections upstream of the gas supply connection to the heater.
Figure 21
WARNING:
For L.P.Gas, use
PRESSURE
REGULATED
gas supply. Do not directly connect LP supply tank to the
pressure regulator on the heater. The LP supply tank must have its own separate pressure regulator that can reduce
the supply tank gas pressure down to a maximum of 14 inches (355 mm) of water column pressure.
IMPORTANT:
Hold the gas inlet of the appliance with wrench when connecting it to gas piping and/or fittings.
CHECK AFTER GAS CONNECTION
WARNING: All gas piping and connections must be tested for leaks after installation or servicing. All leaks
must be corrected immediately.
1. Make sure the control of the heater is in the “OFF” position.
2. Open the manual shut off valve. Test for leaks by applying liquid detergent to all joints. Check all joints from gas
meter to thermostat gas valve. (Bubbles forming indicate a gas leak)
3. Correct any leak defect at once.
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