Author Topic: Garage unit heater venting.  (Read 387 times)

Offline nash668

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Garage unit heater venting.
« on: September 09, 2016, 02:14:34 PM »
Was at a supplier the other day pricing a job for a unit heater (residential) and was told that horizontal venting now has to be stainless steel. Is this part of the new code book? Because this changes everything.

Offline Admin

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Re: Garage unit heater venting.
« Reply #1 on: September 09, 2016, 02:37:06 PM »
The legal code right now, in Ontario, is the B149.1-10 with FS-212-14 amendments.  I don't see anything in it or the future B149.1-15, about stainless steel venting.

I suspect this might be an installation manual requirement.  They probably want you to use a Z-flex kit which I believe is stainless steel.

Unless you have high ceilings, it can be a real challenge to install a unit heater in a residential garage and satisfy Clause 7.27.3.

Clause 7.27.3 - When installed in a garage, a minimum clearance of 8 ft (2.4 m) shall be maintained between the base of the heater and the garage floor. The minimum clearance may be reduced when a substantial guard is provided to prevent vehicles from striking the heater. See also Clause 4.16.