Regency Fireplace Products 686-927, Owners & Installation Manual, Page: 57 / 128

City Series CB60EPV
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57
installation
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.
Note: This model comes with a 5"inner and 8"outer collar which must be reduced to 4" x 6 5/8" in all applications. Must be terminated horizontally. Vertical
terminations are not permitted.
Important:
Maximum total vent length = 72' maximum of six - 90° elbows
permitted.
One 90° elbow = two 45° elbows.
Maximum total negative vent length = 7'.
Note: Maximum length of 72 feet is based on overall length of
combined chimney components.
Do not run positive venting after a negative run.
Venting Arrangements for Horizontal Terminations
End of Line Horizontal Vent Chart
RIGID PIPE: MUST USE RIGID PIPE ADAPTOR 770-994 AND 946-606 PIPE REDUCER TO 4" X 6 5/8"
Note: Rigid pipe is approved for up to 72 feet.
FLEX VENT: MUST USE REDUCER 946-758 TO 4" X 6 5/8"
Note: Flex pipe is approved for up to 40 feet using 2 X 946-756-- 20 foot flex kits.
No vent restrictor is required.
Vent Restrictor Position
318"
238"
138"
Set 0
Fully open
Factory Set
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.
Inline power vent bypass setting: Fully closed
This negative run is for the end of
line power vent cap only. Do not run
with the inline power vent.
72' Overall length Max.
Shown with 5 - 90 0 elbows
Restrictor - Fully Open
72' Overall length Max.
Shown with 3 - 90
0
elbows
72' Run (no rise)
Shown with 2 elbows (Negative run 72')