Installation and Operation Manual

Form #43219020
Sept 2012
5. This appliance is equipped with a snap-opening,
combination gas valve. The maximum supply pressure to
the appliance is 14” W.C. or 1/2 P.S.I. If the line pressure
is more than the maximum supply pressure, then use a
line regulator as indicated in the following illustration, or a
line regulator which corresponds to the supply pressure.
6. If a second stage regulator is used and gas seeps through
it, the redundant combination gas valve is designed to lock
out. Pressure build-up in the supply lines prior to the
heater must be released before proper heater operation.
7. After all gas connections have been made, make sure the
heater and all gas outlets are turned off before the main gas supply is turned on. Turn the gas pressure
on and check for leaks. To check for leaks, apply a soapsuds solution to all connections and joints or
check by one of the methods listed in Appendix D of the National Fuel Gas Code, ANSI Z223.1-(latest
edition).
9) INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION
SUPPLY PRESSURE
1. The installer will provide a 1/8” N.P.T. plugged tapping, accessible for test gauge connection immediately
upstream of the gas supply connection to the heater.
OUTLET GAS PRESSURE CHECK AND ADJUSTMENTS (HONEYWELL 1-STAGE GAS VALVES)
1. Turn the gas valve to the “OFF” position. Remove the 1/8” plug from the combination gas valve at the
outlet pressure tap and connect a 1/8” N.P.T. nipple to the tapped hole. Connect gauge to nipple. Turn
on the gas supply.
Model Suffix 5C
9
Certified connections are recommended
to be installed as shown, in one plane,
and without sharp bends, kinks or twists.
The gas take off from the supply line
must be parallel to the burner gas inlet
connection.
If the maximum supply pressure is less
than ½ psig, a second stage regulator is
not required.