Process Steam

Canuck_3

Hey Fellow Wallies

I can't seem to find the bottom line on this issue and am wondering if you guys might help?

30 lb/hr steam boiler, electric, low pressure, used for process, (i.e. - no condensate return). They take cold domestic water, run it through a conventional electric water heater to preheat it to 85-90 deg F before it gets to the boiler. No pumps used here, it all works its way through on system pressure. I'm guessing that there's a PRV between the water heater and the boiler so that the boiler only gets 3-5 psi

Not a typical set-up, I understand, but it works for them. Question is - from a code standpoint, do they still require a blow-down tank, (which they don't have)? I'm interested in any jurisdictional areas but, specifically, this thing is located in Ontario, Canada.

Thanks fellas!

Brad White

Blow-down tank

I am not sure of your local rationale, but a blow-down tank serves a primary purpose to allow a place for the boiler blow-off to cool (or be cooled) before going to sanitary discharge. Usually it has to be cooled to 130F or less.