MONTAGUE Legend series, Instruction Manual

Page: 6 / 15

6
INSTALLATION
Gas Hook Up
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the flow of
gas required for satisfactory performance. A steady supply pressure between 7‖ and 8‖ WC for
natural gas and 11‖ to 12‖ WC for propane gas is required. With all units operating simultaneous-
ly, the manifold pressure on all units should not show any appreciable drop. Fluctuation of more
than 25% on natural gas and 10% on propane gas will create pilot problems and affect burner op-
erating characteristics. Contact your gas company for correct supply line sizes.
The unit should be connected only to the type of gas for which it is equipped. Check type of gas
on rating plate.
1. 1-1/4‖ FRONT MANIFOLD:
The gas manifold of this appliance or of the battery which it is a part must be connected to a
gas appliance pressure regulator adjusted for the manifold pressure marked on the rating plate.
3/4‖ REAR MANIFOLD:
The gas pressure regulator supplied with this unit must be used.
FOR NATURAL GAS— the gas pressure regulator is factory adjusted for 6.0‖ WC manifold pres-
sure. The maximum inlet pressure to the regulator should not exceed 10.5‖WC.
FOR PROPANE GAS—the gas pressure regulator is factory adjusted for 10.0‖WC manifold pres-
sure. The maximum inlet pressure to the regulator should not exceed 21‖WC.
2. Use a pipe joint compound which is suitable for use with Propane gas on all threaded connec-
tions.
3. Manifold pressure must be maintained at the pressure marked on the rating plate — 6.0‖WC
for natural and 10.0‖WC for propane gas.
4. Turn off all burner valves.
5. Turn on gas supply and check all unions for leaks. Use soapy water only for testing on all
gases. NEVER USE AN OPEN FLAME TO CHECK GAS LEAKS.
IMPORTANT
THIS UNIT IS EQUIPPED WITH FIXED ORIFICES FOR THE TYPE OF GAS MARKED ON
THE RATING PLATE. THE ORIFICES ARE SIZED FOR THE FOLLOWING GAS PRES-
SURE:
NATURAL …………. 6.0”WC PROPANE GAS ………… 10.0”WC