Dunkirk Q90-200 Series II - Manual (Page 18)

18
Table 7 - Combustion air and vent pipe fittings must conform with the
following:
Item Material USA Standard Canadian Standard
Exhaust
and/or
Intake
Air Pipe
and Fittings
PVC
UL1738
ULC S636
ASTM D1785
ASTM D2241
(Fittings) D2466
(Pipe & Fittings)
ULC S636
CPVC
UL1738
ULC S636
F441
(Fittings) F439
(Pipe & Fittings)
ULC S636
Polypropylene (PP)
UL1738
ULC S636
(Pipe & Fittings)
ULC S636
Intake Air
ONLY
Pipe and Fittings
PVC ASTM D2665
(DWV) CSA B181.2
(SCH 40) CSA B137.3
ABS
ASTM D3965
ASTM D2661
CSA B181.1
Pipe
Cement
And
Primer
PVC
ULC S636
ASTM D2564
ULC S636 (Exhaust & Air Intake)
CSA B137.3 (Air Intake ONLY)
CSA B181.2 (Air Intake ONLY)
CPVC
ULC S636
ASTM F493
ULC S636 (Exhaust & Air Intake)
CSA B137.6 (Air Intake ONLY)
CSA B181.2 (Air Intake ONLY)
ABS ASTM D2235
ULC S636 (Exhaust & Air Intake)
CSA B181.1 (Air Intake ONLY)
7 - COMBUSTION AIR AND VENT PIPE
Figure 14 - Combustion Air & Vent Piping
NOT REQUIRED WHEN USING PP NOT REQUIRED WHEN USING PP