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59CU5A: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
41
Table 16 – Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (U.S.A. Installations)
Table 17 – Maximum Allowable Exposed Vent Length in Unconditioned Space - Ft.
MATERIALS
USA
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 or ULC S636 where required by code.
2. See Table below for approved materials for use in the U.S.A.
3. ULC S636 vent systems must be composed of pipe, fittings, cements, and primers from the same supplier.
4. Factory accessory concentric vent kits are ULC S636 listed.
Material
Description
Type
ASTM or ULC Specification
Pipe
Solvents/Primers**
Cements
PVC
Pressure Pipe
Schedule 40
D1785
D2466
or
D2665
F656
D2564
DWV
Schedule 40
D1785/D2665
Cellular Core
Schedule 40
F891
SDR 26
N/A
D2241
SDR 21
N/A
D2241
IPEX
Schedule 40
ULC S636
ULC S636
ULC S636
ULC S636
Royal Pipe
Schedule 40
ULC S636
ULC S636
ULC S636
ULC S636
ABS
ABS
Schedule 40
D1527
D2468
Clear Cleaner For
ABS†
D2235
DWV-IPS Sizes
Schedule 40
D2661
D2661
Cellular Core
DWV-IPS Sizes
Schedule 40
F628
CPVC
Pressure Pipe
Schedule 40
F441
F438
F656
F493
SDR
N/A
F442
N/A
IPEX
Schedule 40
ULC S636
ULC S636
ULC S636
ULC S636
Royal Pipe
Schedule 40
ULC S636
ULC S636
ULC S636
ULC S636
* 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
Approved Manufacturer
Solvents Primers
Cements
Poly
Pro®
M & G Dura Vent
Not Permitted
Not Permitted
NOTE: Polypropylene vent systems are UL
−
1738 and ULC S636 listed and assembled using mechanical fastening systems
supplied by the vent manufacturer.
Unit Size
60,000 BTUH
Winter
Design
Temp °F
Pipe Dia.
in.
Uninsulated
3/8-in. Insulation
1/2-in. Insulation
1 ½
2
2 ½
3
1 ½
2
2 ½
3
1 ½
2
2 ½
3
20
20
30
30
25
20
75
65
60
20
85
75
65
0
15
15
10
10
20
40
30
25
20
45
40
30
-20
10
5
20
25
20
15
20
30
25
20
-40
5
20
15
15
10
20
20
15
10
Unit Size
80,000 BTUH
Winter
Design
Temp
°F
Pipe Dia.
in.
Uninsulated
3/8-in. Insulation
1/2-in. Insulation
1 ½
2
2 ½
3
4
1 ½
2
2 ½
3
4
1 ½
2
2 ½
3
4
20
15
40
40
35
30
15
50
90
75
65
15
50
70
70
70
0
15
20
15
10
5
15
50
45
35
30
15
50
50
40
35
-20
15
10
5
15
35
30
20
15
15
40
30
25
15
-40
10
5
15
25
20
15
5
15
30
25
20
10
Unit Size
100,000 BTUH
Winter
Design
Temp °F
Pipe Dia.
in.
Uninsulated
3/8-in. Insulation
1/2-in. Insulation
2
2 ½
3
4
2
2 ½
3
4
2
2 ½
3
4
20
20
50
40
35
20
80
95
80
20
80
105
90
0
20
20
15
10
20
55
45
35
20
65
55
45
-20
15
10
5
20
35
30
20
20
45
35
25
-40
10
5
20
25
20
10
20
30
25
15