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IN CANADA, PRODUCTS CERTIFIED FOR INSTALLA-
TION AND INTENDED TO BE VENTED WITH PLASTIC
VENT SYSTEMS (PVC, CVPC & POLYPROPYLENE)
MUST USE VENT SYSTEMS THAT ARE CERTIFIED TO
THE STANDARD FOR TYPE BH GAS VENTING SYS-
TEMS, ULC S636.
THE COMPONENTS OF THE CERTIFIED MATERIAL
MUST NOT BE INTERCHANGED WITH OTHER VENT
SYSTEMS OR UNLISTED PIPE/FITTINGS.
PLASTIC COMPONENTS AND SPECIFIED PRIMERS
AND GLUES OF THE CERTIFIED SYSTEM MUST BE
FROM A SINGLE SYSTEM MANUFACTURER AND
NOT INTERMIXED WITH OTHER SYSTEM MANUFAC-
TURER'S PARTS.
VENT TERMINATIONS ARE NOT REQUIRED TO BE
FROM THE SAME MANUFACTURER AS THE REST OF
THE VENTING BUT VENT TERMINATIONS MUST BE
ULC S636 APPROVED.
NOTE: WITH THE EXCEPTION OF THE TERMINATION
INLET AIR PIPING IS NOT CONSIDERED TO BE A
PART OF THE "VENTING SYSTEM". THE REQUIRE-
MENT THAT VENT MATERIAL BE CERTIFIED TO ULC
S636 DOES NOT APPLY TO INLET AIR PIPING.
REGARDLESS, ALL TERMINATIONS ON BOTH INLET
AND OUTLET PIPES MUST BE CONSTRUCTED FROM
COMPONENTS BUILT TO ULC-S636 REQUIREMENTS.
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