The Ontario Building Code | Installation – General installation – General

(1) Equipment requiring periodic maintenance and forming part of a heating, ventilating or air-conditioning system shall be installed with provision for access for inspection, maintenance, repair and cleaning.

(2) Mechanical equipment shall be provided with guards to prevent injury.

(3) Heating, ventilating or air-conditioning systems shall be protected from freezing if they may be adversely affected by freezing temperatures.