Short answer
Most commercial gas equipment is made in natural gas and propane versions, and many models can be converted from one to the other with the manufacturer's conversion kit. The conversion changes orifices and regulator settings and should be done by a licensed gas fitter. Order the gas type your building actually has, and confirm it on the data plate.
Propane burns differently from natural gas and is supplied at a different pressure, which is why the orifices differ. Running an appliance on the wrong gas can cause poor flames, soot, carbon monoxide and damage, so never connect one without the correct setup.
Gas type matters when ordering because special-order and freight equipment is not returnable once it has been delivered in good condition. Confirm with your gas fitter or utility which gas the kitchen has before you buy.
Your provincial gas safety authority sets the rules for installing and converting gas appliances, including who may do the work.
Updated · By Norpex