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• The first vertical run from the top of the heater
should be no longer than 0.9m (3').
• Make sure vent pipe is gas tight and will not
leak. Use silicon sealant wherever necessary.
• Do not common vent or connect more than
one appliance to this venting system.
•
The total vent length including horizontal & verti-
cal vent runs should be no less than 0.9m (3').
• Do not place any dangerous objects at the end
of the exhaust vent and check that vent pipe is
not blocked in any way.
• Steam (smoke) or water drops may come out
from the end of the exhaust pipe. Select the
location for the end of the vent so that steam is
not visible, and the vent is not wet with drip-
ping 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.
• Consult the vent pipe manufacturer's install-
ation instructions for chimney connections.
Appliance Adapters
• Use the following adapters to connect the
unit to the venting system.
Vent Piping
•Use only UL listed category III vent materials.
• Follow the vent pipe manufacturer's installation
instructions.
• Make the vertical section of the exhaust vent
as short as possible.
• Maintain the same vent pipe diameter from the
heater flue to the vent termination.
Pipe diameter 100mm (4")
No. of Elbows Max. Straight Vent Length
34.6m (15')
28.2m (27')
1 11.7m (39')
Clearances
These clearances are subject to change.
Refer to the UL listing for the proper clearances.
Manufacturer and
Product
Protech FasNSeal FSAA4
HeatFab SafTVent 9401RYPK
Z-Flex Z-Vent 2SVWA04
Flex-L Star-34 SRASPSA4
Part No.
WARNING
Be sure to do
CARBON MONOXIDE POISONING
Follow all vent system requirements in accordance with relevant local or state regulation,
or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI
Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with NSCNGPI.
[ For N-0751M]
Manufacturer and Enclosed Unenclosed
Product Hor. Vert. Hor. Vert.
Noritz N-Vent
Protech FasNSeal
Protech FasNSeal W2
HeatFab SafTVent
Z-Flex Z-Vent
Flex-L-StaR-34
100mm
(4")
100mm
(4")
100mm
(4")
100mm
(4")
100mm
(4")
75mm
(3")
75mm
(3")
75mm
(3")
75mm
(3")
75mm
(3")
75mm
(3")
50mm
(2")
50mm
(2")
25mm
(1")
25mm
(1")
25mm
(1")
25mm
(1")
150mm
(6")
150mm
(6")
150mm
(6")
200mm
(8")
200mm
(8")
250mm (10") (sides)
375mm (15") (top)
150mm (6") (bottom)
200mm (8") (sides)
300mm (12") (top)
100mm (4") (bottom)
8.
Vent Pipe Installation
(Indoor Installation Only)
07.1.5, 4:34 PMPage 13