1. All models of propane (LP) gas or natural gas heaters
have a throttle valve for varying heat output located
between the gas control valve and gas manifold
assemblies. THIS IS NOT A MANUAL GAS SHUT OFF
VALVE.
2. The throttle valve can be adjusted to deliver either
minimum heat or maximum heat. When the throttle
valve handle is parallel to the gas flow, the valve is
completely open to deliver maximum heat output.
(Refer to Fig. 7)
FIG. 7
The throttle valve may be adjusted to minimum heat
output by turning the handle 90° to gas flow or any
position between maximum and minimum settings.
(Refer to Fig. 8)
FIG. 8
Variable Heat Output
12
THROTTLE
VALVE
GAS MANIFOLD
MAXIMUM HEAT
MINIMUM HEA
T
75% OF MAXIMUM
90% OF MAXIMUM
