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Variable Heat Output
Operation
Instructions
3.2-1
1
1. Some 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.
3. 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.
August 1999
Handle
Parallel
Handle
Turned 9
90º
MAXIMUM HEAT
MINIMUM HEA
T
75% OF MAXIMUM
90% OF MAXIMUM