7
2.0 INSTALLATION
(Continued)
The serial plate on the lower right side of the unit indicates the type of gas your unit is equipped
to burn. Do
NOT
connect to any other gas type.
A ¾" NPT line is provided at the rear for the connection. Each unit is equipped with an internal
pressure regulator which is set for 4" W.C. manifold pressure for natural gas and 10" W.C.
for
propane gas. Use 1/8" pipe tap on the burner manifold for checking pressure.
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the volume
of gas required for satisfactory performance. A steady pressure, minimum 6" W.C. for natural
gas and minimum 11" W.C. for propane gas, is recommended. With all units operating
simultaneously, the manifold pressure on all units should not show any appreciable drop.
Fluctuations of more than 25% on natural gas, and 10% on propane gas, will create pilot
problems and affect burner operating characteristics. Contact your gas company for correct
supply line sizes.
Purge the supply line to clean out any dust, dirt, or other foreign matter before connecting the
line to the unit. It is recommended that an individual manual shut off valve be installed in the
gas supply line to the unit. Use pipe joint compound which is suitable for use with LP gas on all
threaded connections. Test pipe connections thoroughly for gas leaks.
WARNING: Never use an open flame to check for gas leaks. Check
all connections for leaks using soapy water before use.
NOTICE: If applicable, the vent line from the gas appliance pressure regulator
shall be installed to the outdoors in accordance with local codes or, in the
absence of local codes, with the
National Fuel Gas Code, ANSI Z223.1/NFPA 54
,
or the
Natural Gas and Propane Installation Code CSA B149.1
, as applicable.
NOTICE: If this equipment is being installed at over 2,000 feet altitude and was
not so specified on order, contact service department. Failure to install with
proper orifice sizing may void the warranty.
