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installation
UNIT INSTAllATION
WITH vERTIcAl
TERMINATION
(Rigid Vent Systems)
Note: A clearance of 2"(51mm) must be
maintained; except when passing
through a wall, ceiling, or at the
termination where the use of a firestop
or wall thimble reduces the required
clearance to 1-1/2" (38mm). We
recommend framing a 11"(279mm) x
11"(279mm) (inside dimensions) hole
to give structural rigidity for mounting
the termination.
1) Maintain the 1-1/2" (38mm)
clearances (air spaces)
t o c o m b u s t i b l e s w h e n
passing through ceilings,
walls, roofs, enclosures,
attic rafter, or other nearby
combustible surfaces,
ensuring that the use of
a firestop or wall thimble
is used as noted above.
Do not pack air spaces
with insulation. Check
" Ve n t i n g A r r a n g e m n t
- Vertical Termination"
section for the maximum
vertical rise of the venting
system and the maximum
h o r i z o n t a l o ff s e t
limitations.
2) Set the gas appliance
in its desired location.
Drop a plumb bob
down from the ceiling
to the position of the
appliance flue exit,
and mark the location
where the vent will
penetrate the ceiling.
Drill a small hole at
his point. Next, drop
a plumb bob from
the roof to the hole
previously drilled in the ceiling, and mark the
spot where the vent will penetrate the roof.
Determine if ceiling joists, roof rafters or other
framing will obstruct the venting system. You
may wish to relocate the appliance or to offset,
as shown in Diagram 2 to avoid cutting load
bearing members.
3) A Firestop spacer must be installed in the floor
or ceiling of every level.
Diagram 3
26
4) Assemble the desired lengths of pipe and
elbows. Ensure that all pipes and elbow
connections are in the fully twist-locked
position and sealed.
Note:
For best results and optimum performance
with each approved venting system, it is
highly recommended to apply "Mill-Pac"
sealant (supplied) to every inner pipe connec-
tion. Failure to do so may result in drafting
or performance issues not covered under
warranty. Silicone (red RTV) is optional.
5) Cut a hole in the roof centered on the small
drilled hole placed in the roof in Step 2. The
hole should be of sufficient size to meet
the minimum requirements for clearance to
combustibles of 1-1/2"(38mm). Slip the flashing
under the shingles (shingles should overlap
half the flashing) as per Diagram 4.
Diagram 1
Diagram 4: The upper half of the flashing is
installed under the roofing material and not
nailed down until the chimney is installed.
This allows for small adjustments.
6) Continue to assemble pipe lengths.
Note: If an offset is necessary in the attic
Diagram 2
to avoid obstructions, it is important
to support the vent pipe every 3
feet (0.9 meter), to avoid excessive
stress on the elbows, and possible
separation. Wall straps are available
for this purpose
(Diagram 2).
Galvanized pipe is desirable above the roofline
due to its higher corrosion resistance. Continue
to add pipe sections through the flashing until
the height of the vent cap meets the minimum
height requirements specified in Diagram 5 or
local codes. Note that for steep roof pitches,
the vertical height must be increased.
"This uniT musT always
TeRminaTe / venT
diRecTly To The ouTdooRs."
Diagram 5
Minimum vent
Roof pitch
Feet
flat to 7/12
2
over 7/12 to 8/12
2
over 8/12 to 9/12
2
over 9/12 to 10/12
2.5
over 10/12 to 11/12
3.25
over 11/12 to 12/12
4
over 12/12 to 14/12
5
over 14/12 to 16/12
6
over 16/12 to 18/12
7
over 18/12 to 20/12
7.5
over 20/12 to 21/12
8
A poor draft, or down drafting can result from
high wind conditions near big trees or adjoining
roof lines, in these cases, increasing the vent
height may solve the problem.
7) Ensure vent is vertical and secure the base
of the flashing to the roof with roofing rails,
slide storm collar over the pipe section and
seal with a mastic.
8) Install the vertical termination cap by twist-
locking it.
Note: Any closets or storage spaces, which
the vent passes through must be
enclosed.
Offset chart
Regency Gemfire™ Gas Fireplace
Height
Meters
0.61
0.61
0.61
0.76
0.99
1.22
1.52
1.83
2.13
2.29
2.44
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