Submittal Sheet

FIELD CONTROLS, LLC - CONTRACTOR PRODUCTS DRAFT CONTROLS
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How Draft Controls Work
Static pressure of the cool air (1) exerts pressure on the outside of the
furnace or boiler, the breaching, and stack.
The pressure difference between the room air and heated gas (air)
causes products of combustion (2) to flow (draft) through the unit and
rise through the breaching and chimney.
Room temperature air (3) enters through the barometric draft control (4)
in the precise amount needed to overcome the excess drafts caused by
temperature variations, wind fluctuations and barometric pressure
changes.
Combustion of fuel is complete and the process is stabilized. The
velocity of combustion gases through the heat exchanger is slowed so
more heat is extracted. The unit operates more efficiently, reliably and
requires less maintenance.
Type RC
Oil or Coal – Residential and Commercial
The Field RC is furnished as standard equipment on many leading brands of oil or coal-fired heating equipment. It is calibrated
to allow for easy adjustment to the furnace or boiler manufacturer’s specifications. Designed for settings from .02" to .08", this
control is so sensitive that instrumentation should be used when adjusting the unit during installation.
Recommended Pipe Sizes (in.)
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