Set 0
Fully open
Factory Set
The gas power vent system is designed to allow the installation of a gas appliance when typical vent configurations (shown in this manual) are not
possible.
Venting Arrangements for Horizontal Terminations
Inline Horizontal Vent Chart
RIGID PIPE: MUST USE RIGID PIPE ADAPTOR 770-994 AND 946-606 PIPE REDUCER TO 4" X 6 5/8" (102 mm x 168 mm).
FLEX VENT: MUST USE REDUCER 946-758 TO 4" X 6 5/8" (102 mm x 168 mm).
NOTES
• • Rigid pipe is approved for up to 72 feet (22 m).Rigid pipe is approved for up to 72 feet (22 m).
• • Flex pipe is approvedFlex pipe is approved for up to 40 feet (12.2 m) using two 20 foot (6.1 m) flex kits (part # 946-756). for up to 40 feet (12.2 m) using two 20 foot (6.1 m) flex kits (part # 946-756).
• • This model coThis model comes with a 5" (127 mm) inner and an 8" (203 mm) outer collar which must be reduced to 4" x 6-5/8" (102 mm x 168 mm) in all applications. mes with a 5" (127 mm) inner and an 8" (203 mm) outer collar which must be reduced to 4" x 6-5/8" (102 mm x 168 mm) in all applications.
• • Must be terminated horizontally. Vertical terMust be terminated horizontally. Vertical terminations are not permitted. minations are not permitted.
Inline power vent location restrictions:
Minimum 4 ft (1.2 m) from the unit
Minimum 1 ft (0.3 m) prior to an elbow.
Minimum 1 ft (0.3 m) following an elbow.
Minimum 1 ft (0.3 m) prior to a termination cap.
When the inline blower is installed after a negative run, for every foot of
negative run the inline blower must be an equal distance or greater from
the 90-degree elbow. See example above.
IMPORTANT
• • Maximum total vent length (based on overall length of Maximum total vent length (based on overall length of
combined chimney components) = 72' (22 m) combined chimney components) = 72' (22 m)
• • Maximum total negative vent length = 7' (2.1 m). Maximum total negative vent length = 7' (2.1 m).
• • Do not run positive venting after a negative run.Do not run positive venting after a negative run.
• • Maximum of six - 90° elbows permitted. Maximum of six - 90° elbows permitted.
• • One 90° elbow = two 45° elbows.One 90° elbow = two 45° elbows.
• • Minimum 4' (1.2 m) from the unit prior to terminating.Minimum 4' (1.2 m) from the unit prior to terminating.
Minimum 1 ft (0.3 m)
following an elbow
72' (22 m) Overall length Max.
Shown with 5 - 90
0
elbows
Minimum 1 ft (0.3 m)
prior to a termination
cap
Restrictor - Fully Open
Minimum 1 ft (0.3 m)
prior to an elbow
Maximum allowable negative run 7 ft (2.1 m)
72' (22 m) Overall length Max.
Shown with 3 - 90
0
elbows
Minimum 4 ft (1.2 m)
from the unit
72' (22 m) run (no rise)
**Inline blower when installed after a negative
run must be an equal distance or greater from
a 90 degree elbow. (Example: In a 3-foot (.91
m) negative run, the inline power vent must
be a minimum of 3 feet (0,91 m) away from
the elbow.)
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