The Ontario Building Code | Ventilation Systems Coupled with Forced Air Heating Systems

9.32.3.6. ventilation Systems Coupled with Forced Air Heating Systems

(1) This Article applies to a mechanical ventilation system in a dwelling unit that contains a forced air heating system which is used for delivery of ventilation air.

Note: On July 1, 2017, Sentences 9.32.3.6.(1) of Division B of the Regulation is revoked and the following substituted: (See: O. Reg. 139/17, s. 128)

(1) This Article applies to a mechanical ventilation system serving a houseor an individual dwelling unit that contains a forced air heating system which is used for delivery of ventilation air.

(2) In a Type I dwelling unit, a ventilation supply inlet is not required.

Note: On July 1, 2017, Sentences 9.32.3.6.(2) of Division B of the Regulation is revoked and the following substituted: (See: O. Reg. 139/17, s. 128)

(2) Where a mechanical ventilation system serves a Type I dwelling unit, a ventilation supply inlet is not required.

(3) In a Type II dwelling unit, the mechanical ventilation system shall include a heat recovery ventilator, coupled to the forced air heating system, installed in accordance with Article 9.32.3.11.

Note: On July 1, 2017, Sentences 9.32.3.6.(3) of Division B of the Regulation is revoked and the following substituted: (See: O. Reg. 139/17, s. 128)

(3) Where a mechanical ventilation system serves a Type II dwelling unit, the system shall include a heat recovery ventilator, coupled to the forced air heating system, installed in accordance with Article 9.32.3.11.

(4) The forced air heating system circulation fan shall be controlled by a manual switch located adjacent to the ventilation fan switch required in Sentence 9.32.3.4.(4).

(5) The switch required in Sentence (4) shall be identified by the words CIRCULATION FAN.