Regency P40-LP1 User Manual

Page of 56
Regency
®
 P40-1 Direct Vent Gas Fireplace
23
INST
ALLA
TION
INSTALLATION
6)  Continue to assemble pipe lengths.
Note:  If an offset is necessary in the attic 
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 roofl ine 
due to its higher corrosion resistance. Continue 
to add pipe sections through the fl ashing until 
the height of the vent cap meets the minimum 
height requirements specifi ed in Diagram 5 or 
local codes.  Note that for steep roof pitches, 
the vertical height must be increased.  
Diagram 3
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.
UNIT INSTALLATION 
WITH VERTICAL 
TERMINATION
(Rigid Vent Systems)
1)  Maintain the 1-1/4" 
(32mm) 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. Do 
not pack air spaces with 
insulation. Check "Venting 
Arrangemnt - Vertical 
Termination" section for 
the maximum vertical 
rise of the venting system 
and the maximum 
horizontal offset 
limitations.
2)  Set the gas appliance 
in its desired location. 
Drop a plumb bob 
down from the ceiling to the position of the 
appliance fl ue 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 
fl oor or ceiling of every level. 
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.
Diagram 4: The upper half of the fl ashing is 
installed under the roofi ng material and not 
nailed down until the chimney is installed. 
This allows for small adjustments.
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 suffi cient size to meet 
the minimum requirements for clearance 
to combustibles of 1-1/4"(32mm). Slip the 
fl ashing under the shingles (shingles should 
overlap half the fl ashing) as per Diagram 4.
Offset Chart
 
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 fl ashing to the roof with roofi ng 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. 
Diagram 5
Roof Pitch
Minimum Vent 
Height
Feet
Meters
fl at to 7/12
2
0.61
over 7/12 to 8/12
2
0.61
over 8/12 to 9/12
2
0.61
over 9/12 to 10/12
2.5
0.76
over 10/12 to 11/12
3.25
0.99
over 11/12 to 12/12
4
1.22
over 12/12 to 14/12
5
1.52
over 14/12 to 16/12
6
1.83
over 16/12 to 18/12
7
2.13
over 18/12 to 20/12
7.5
2.29
Diagram 2