Welcome to HVAC TECH GROUP Monday, October 23 2017 @ 07:27 AM EDT

Director's Advisory FS-101-07 & Clarification Notice

  • Views: 1,465
TSSA Advisories Director's Advisory FS-101-07 & Clarification Notice - Variance Conditions for Continued Use of Existing Uncertified Plastic Vent.



Advisory FS10107


*Click image to enlarge.

Clause (8.9.5) - Venting systems, or total vent run if less than 3 ft (900mm), that employ plastic vents shall be installed such that the first 3 ft (900mm), from the appliance flue outlet is readily accessible for visual inspection except for direct vent appliances such as fireplaces that are intended to have short vent lengths to be concealed for decorative purposes.

Clause (8.9.6) -
(a) Until July 1, 2008, vents constructed using plastic piping shall be certified to ULC S636 except for special fittings (non standard vent sizes and components) which may include:
  a. entire vent systems supplied with the appliance that are not comprised of standard vent sizes and components;
  b. transitions with or without condensing lines; and
  c. termination kits.
(b) After July 1, 2008, vents constructed using plastic piping shall be certified to ULC S636.

Download and print the Application for a Variance/Deviation FS09533, to apply.

There have been interesting amendments to Clauses 8.9.5 and 8.9.6, regarding plastic venting.
Download Questions and Answers regarding ULC S636 and plastic venting.

Download the Clarification Notice For FS-101-07