Tempstar F97CMN Installation, Start-Up, Operating And Service And Maintenance Instructions page 48

F97CMN and G97CMN: Installation, Start-up, Operating and Service and Maintenance Instructions
Table 15 – Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials
1. All pipe*, fittings*, primers**, and solvents** must conform to American National Standards Institute (ANSI) standards and
American Society for Testing and Materials (ASTM) standards
USA
2. See Table below for approved materials for use in the U.S.A.
3. UL 1738 vent systems must be composed of pipe*, fittings**, cements, and primers** from the same supplier.
1. Installation in Canada must conform to the requirements of CAN/CSA B149 code.
2. Vent systems must be composed of pipe*, fittings*, cements, and primers from the same supplier and listed to ULC S636.
CANADA
3. Not all materials below may be approved or listed to ULC S636.
4. Factory accessory concentric vent kits are ULC S636 listed.
Material Description
Pressure Pipe
DWV
Cellular Core
PVC SDR 26
SDR 21
IPEX
Royal Pipe
ABS
DWV-IPS Sizes
ABS
Cellular Core
DWV-IPS Sizes
Pressure Pipe
SDR
CPVC
IPEX
Royal Pipe
* PVC and ABS pipe may use either DWV or pressure rated fittings.
** Colored or tinted solvents or primers must be used where required by code in the USA
† ABS plastic does not require a primer before solvent cementing. A cleaner for ABS is recommended to remove any surface residue. ABS cleaners are
not subject to ASTM standards.
Polypropylene
Poly Pro®
Innoflue®
NOTE: Polypropylene vent systems are UL−1738 and ULC S636 listed and assembled using mechanical fastening systems supplied by the vent
manufacturer.
Venting System Length Calculations
The Total Equivalent Vent Length (TEVL) for EACH combustion air or vent pipe equals the length of the venting system, plus the equivalent length of
elbows used in the venting system from
Standard vent terminations or factory accessory concentric vent terminations count for zero deduction.
See vent system manufacturer's data for equivalent lengths of flexible vent pipe or other termination systems. DO NOT ASSUME that one foot of
flexible vent pipe equals one foot of straight PVC/ABS DWV vent pipe.
Compare the Total Equivalent Vent Length to the Maximum Equivalent Vent Lengths in
Example 1
A direct-vent 60,000 BTUH furnace installed at 2100 ft. (640M). Venting system includes FOR EACH PIPE:
70 feet (22 M) of vent pipe, 65 feet (20 M) of combustion air inlet pipe, (3) 90º long-radius elbows, (2) 45º long-radius elbows, and a factory accessory
concentric vent kit.
Can this application use 2" (50 mm ND) PVC/ABS DWV vent piping?
Measure the required linear length of air inlet and vent
pipe; insert the longest of the two here
Add equiv length of (3) 90º long-radius elbows
(use the highest number of elbows for either the vent or
inlet pipe)
Add equiv length of (2) 45º long-radius elbows
(use the highest number of elbows for either the vent or
inlet pipe)
Add equiv length of factory concentric vent term
Add correction for flexible vent pipe, if any
Total Equivalent Vent Length (TEVL)
Maximum Equivalent Vent Length (MEVL)
Is TEVL less than MEVL?
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
MATERIALS
Type
Pipe*
Schedule 40 D1785 / UL 1738
Schedule 40 D1785 / D2665
Schedule 40 F891
N/A D2241
N/A D2241
Schedule 40 ULC S636
Schedule 40 ULC S636
Schedule 40 D1527
Schedule 40 D2661
Schedule 40 F628
Schedule 40 F441
N/A F442
Schedule 40 ULC S636
Schedule 40 ULC S636
Approved Manufacturer
M & G Dura Vent
Centrotherm
Table 8.
3 x
2 x
ASTM / ULC / UL Specification
Fittings*
D2466
or
D2665
ULC S636
ULC S636
D2468
D2661
F438
N/A
ULC S636
ULC S636
Table 11.
70 ft.
(22 M)
3 ft. 9 ft.
=
(0.9 M) (2.7 M)
1.5 ft. 3 ft.
=
(0.5 M) (0.9 M)
0 ft.
0 ft.
82 ft.
(25 M)
95 ft.
(29 M)
YES
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Solvents/Primers** Cements
F656
ULC S636 ULC S636
ULC S636 ULC S636
Clear Cleaner For
ABS†
F656
ULC S636 ULC S636
ULC S636 ULC S636
Solvents Primers Cements
Not Permitted
Not Permitted
Use length of the longer of the vent
or air inlet piping system
From Table 8
From Table 8
From Table 8
From Vent Manufacturer's
instructions; zero for PVC/ABS DWV
Add all of the above lines
For 2" pipe from Table 11
Therefore, 2" pipe MAY be used
D2564
D2235
F493