Bryant 987MB Installation, Start-Up, Operating And Service And Maintenance Instructions page 49

987MB: Installation, Start-up, Operating and Service and Maintenance Instructions
Cut the required number of holes in the roof or sidewall for vent and
(when used) combustion air pipes. Sidewall holes for two-pipe vent
terminations should be side-by-side, allowing space between the pipes
for the elbows to fit on the pipes.
Holes in the roof for direct-vent (two pipe) terminations should be
spaced no more than 18 in. (457 mm) apart to help avoid vent gas
recirculation into combustion air intake.
Termination elbows will be installed after the vent and (if used)
combustion air pipe is installed.
Sidewall Terminations
Concentric Vent Termination
NOTE: Follow the instructions of the vent terminal manufacturer. These
instructions are provided as a reference only.
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut one 4-in. diameter hole for 2-in. kit, or one 5-in. diameter hole
for 3-in. kit.
2. Loosely assemble concentric vent/combustion air termination
components together using instructions in kit.
3. Slide assembled kit with rain shield REMOVED through hole.
NOTE: Do not allow insulation or other materials to accumulate inside
of pipe assembly when installing it through hole.
4. Locate assembly through sidewall with rain shield positioned no
more than 1-in. (25 mm) from wall as shown in
5. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
2-Pipe (Direct Vent) and 1-Pipe (Ventilated Combustion
Air) Vent Termination
NOTE: Follow the instructions of the vent terminal manufacturer. These
instructions are provided as a reference, only.
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
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®
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.
Fig. 40.
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
!
RECOMMENDED SUPPORT FOR VENT TERMINATIONS
It is recommended that sidewall vent terminations in excess of 24
inches (0.6 M) in vertical length be supported by EITHER the Direct
Vent Termination Kit shown in
or supports fastened to the structure.
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut two holes, one for each pipe, of appropriate size for pipe size
being used.
2. Loosely install elbow in bracket (if used) and place assembly on
combustion-air pipe.
3. Install bracket as shown in
NOTE: For applications using vent pipe option indicated by dashed
lines in Fig. 40 and 41, rotate vent elbow 90_ from position.
4. Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping. DO NOT CEMENT
POLYPROPYLENE FITTINGS.
For Ventilated Combustion Air Terminations, terminate as shown in
Fig. 41.
(Direct Vent / 2-Pipe System ONLY)
When two or more furnaces are vented near each other, two vent
terminations may be installed as shown in
termination, or pair of vent terminations, must be at least 36 in. (914
mm) away from the first two terminations. It is important that vent
terminations be made as shown in
gases.
Inducer Outlet Restrictor
The loose parts bag may contain an inducer outlet restrictor. The outlet
restrictor is NOT used on these furnaces. Discard restrictor.
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
49
NOTICE
Table 10 or by field-supplied brackets
Fig. 40 and 50.
Fig. 40, but next vent
Fig. 40 to avoid recirculation of vent
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