Omega II
®
Installation, Operation & Maintenance
Page 20
Combustion Research Corporation
OUTSIDE AIR SUPPLY
When two
OMEGA II
®
systems are controlled by one
thermostat a common combustion air supply can be used.
This duct must be a minimum of six-inch (6") diameter
and should not exceed fifty feet (50') in length.
A Maximum of two (2) 90° elbows may be used.
Maintain a minimum of six feet (6') between the exhaust
port and the fresh air intake.
Maintain a minimum of six inches (6") between the inlet
hood and the exterior wall.
Install 4" diameter flex nearest inlet trunk.
Do not install inlet flex as an elbow into the blower on
burners with inputs of 155,000 Btu/hr and higher - system
pulsation can occur.
Air intake may be made through the roof using "mushroom"
type vent cap.
Refer to the drawing below for a typical installation layout.
6” Diameter Combustion Air
Inlet Maximum Of 50’, With
Maximum of Two 90° Elbows
PN 0314.A 4” Inlet Flex - Typical
6” Min.
Summary of Contents for Omega II
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