B-1.1, r. 2 - Construction Code

Full text
2.04. Any appliance or equipment used in an installation intended to use, store or distribute gas must be approved for the use for which it is intended.
It is prohibited to sell or lease an appliance or equipment that has not been approved. It is also prohibited, except for approval purposes, to use in an installation intended to use gas an appliance or equipment that has not been approved.
However, an appliance or equipment may, during an exhibition, a presentation or a demonstration, be used without prior approval provided that it is accompanied by a notice with the following warning in characters measuring at least 15 mm: “WARNING: this material has not been approved for sale or rental as required by Chapter II of the Construction Code.”.
This section does not apply to the following appliance or equipment:
(1)  a manual appliance whose input power does not exceed 20,000 Btu/h (6 kW) intended for industrial applications;
(2)  a Bunsen burner; and
(3)  a stationary internal combustion engine.
O.C. 875-2003, s. 1.