Specification Sheet

REVISED – March 25, 2006 submitom.doc (9/23/03)
EXHAUST METHODS
COMMON VENTING
1. The total stack length from the OMEGA II exhaust
to the point where it terminates should be a
minimum of three feet (3') and a maximum of
twenty feet (20'). It is recommended that any
portion of flue pipe that passes through the roof or
wall be a double wall vent, 'B' vent is
recommended (check local codes) .
2. Horizontal runs to vertical vent should never
exceed 75% of the vertical height of the vent stack.
Refer to ANSI Z223.1 (current standard) (same as
bulletin NFPA-54) for proper vent sizes and
installation. When exhausting more than one
OMEGA II heater into a common stack the open
area of vent must equal or exceed the sum of the
open area of each flue vent connected to it.
3. When exhausting more than one OMEGA II heater
into a common stack the same thermostat should
control both heaters.
4. Connections to a common stack must be
staggered so as to avoid direct opposition between
streams of combustion gasses.
5. A 1" minimum clearance must be maintained
around vent when passing through the roof.
6. An approved Vent Cap should be used on all
through the roof applications. The National Fire
Protection Standards, NFPA Numbers 54 and 211,
require that unless an approved Vent Cap is used
the vent must extend at least two feet above the
highest portion of a building within ten feet.
7. All Joints in the flue should be sealed. Use General
Electric RTV 106 Red, high temperature adhesive
sealant or equivalent should be sealed. Use
General Electric RTV 106 Red, high temperature
adhesive.