Table of Contents
Advertisement
7.
Vent Pipe Installation
Vent Piping
• Use only listed category III vent materials.
• Follow the vent pipe manufacturer's installation
instructions.
Pipe diameter
No. of Elbows
3
2
1
• Make the vertical section of the exhaust vent
as short as possible.
• Maintain the same vent pipe diameter all the
way to the end.
Clearances
Manufacturer and
Product
Protech FasNSeal
Protech FasNSeal W2
FLEX-L
HeatFab SafTVent
Z-Flex Z-Vent
These clearances are subject to change.
Refer to the UL listing for the proper clearances.
Horizontal Vent Termination
Elbow
3'
Max.
Appliance
Adapter
4"
Max. Straight Vent Length
15'
27'
39'
Enclosed Unenclosed
Hor. Vert. Hor. Vert.
8" (sides)
4"
3"
12"(top)
4"(bottom)
6"
6"
3"
8"
4"
1"
6"
6"
2"
8"
4"
1"
Hanger
Straps
Wall
Thimble
Slope vent
Downwards
(Indoor Installation Only)
• Make sure vent pipe is gas tight and will not
leak. Use silicon sealant wherever necessary.
• Do not place any dangerous objects at the end
of the exhaust vent.
• Steam (smoke) or water drops may come out
from the end of the exhaust pipe. Select the loca-
tion for the end of the vent so that steam is not
visible, and the vent is not wet with dripping water.
• If snow is expected to accumulate, take care
the end of the pipe is not covered with snow or
hit by falling lumps of snow.
• Use a maximum of 3' of straight vertical pipe
before the first elbow.
• Use a minimum total of 3' of straight vent pipe.
• Consult the vent pipe manufacturer's install-
ation instructions for chimney connections.
• Do not common vent or connect more than
one appliance to this venting system.
Appliance Adapters
• Use the following adapters to connect the
3"
unit to the venting system.
3"
Manufacturer and
4"
Product
2"
Protech FasNSeal
FLEX-L
1"
HeatFab SafTVent
Z-Flex Z-Vent
Termination
Part No.
FSAA4
SRASPSA4
9401RYPK
2SVWA04
• Terminate at least 12" above
grade or above snow line.
• Terminate at least 7' above a
public walkway, 6' from the
combustion air intake of any
appliance, and 3' from any
other building opening, gas
utility meter, service regulator
etc.
• Terminate at least 3' above any
forced air inlet within 10', 4'
below, 4' horizontally from and
1' above any door, window, or
gravity air inlet into any building
per National Fuel Gas Code
ANSI Z223.1/NFPA 54.
• Slope the horizontal vent 1/4"
downwards for every 12".
• Use a condensation drain if
necessary.
35
Advertisement
Table of Contents
