Bryant PG96VTA Installation, Start-Up, Operating And Service And Maintenance Instructions page 36

PG96VTA: Installation, Start-up, Operating and Service and Maintenance Instructions
The combustion air pipe cannot terminate in attics or crawl spaces that
use ventilation fans designed to operate in the heating season. If
ventilation fans are present in these areas, the combustion air pipe must
terminate outdoors as a Direct Vent System.
Non-Direct Vent / 1-Pipe System
The vent pipe for a Non Direct Vent (1-pipe) system must terminate
outdoors. See Fig. 43 for references to vent clearances required by
National Code authorities. Allowable vent terminations are shown in
Fig. 41.
Table 13 – 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
SDR 26
PVC
SDR 21
IPEX
Royal Pipe
ABS
ABS
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®
ECCO
Polypropylene
Vent®
NOTE: Polypropylene vent systems are UL−1738 and ULC S636 listed and assembled using mechanical fastening systems supplied by the vent
manufacturer.
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
N/A D2241
N/A D2241
Schedule 40 ULC S636
Schedule 40 ULC S636
Schedule 40 D2661
Schedule 40 D2661
Schedule 40 F441
N/A F442
Schedule 40 ULC S636
Schedule 40 ULC S636
Approved Manufacturer
M & G Dura Vent
Centrotherm
ECCO Manufacturing
A combustion air inlet pipe to the outdoors is not required for a
Non-Direct (single-pipe) Vent System. A 12-in. long section of pipe with
a tight radius 2-in. (51 mm) 90 degree elbow is required to be attached to
the furnace. See Fig. 50. This short inlet air pipe helps to ensure stable
combustion, as well as allow for sound attenuation. To aid sound
attenuation, point the inlet air pipe away from occupants. An extra elbow
and/or five feet of pipe may be used to accomplish the sound attenuation
function.
ASTM / ULC / UL Specification
Fittings* Solvents/Primers**
D2466 or D2665
ULC S636
ULC S636
D2468 Clear Cleaner For
D2661
F438
N/A
ULC S636
ULC S636
Solvents Primers
36
Cements
F656 D2564
ULC S636 ULC S636
ULC S636 ULC S636
D2235
ABS†
F656 F493
ULC S636 ULC S636
ULC S636 ULC S636
Cements
Not Permitted
Not Permitted
Not Permitted