6\" Baro on 5\" Flue

Steamhead (in transit)

generally fit the next size smaller pipe rather well. We find we need to do this a lot in older buildings with chimneys designed for coal boilers. Try dry-fitting it first before getting a custom piece made up.

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Chas_9

Mounting Draft Regulator

I see that for tall chimneys, Field controls recomends a larger flue damper. Say 6" instead of 5". How do you put a 6" barometric on a 5" flue pipe? Do they fit right or will I end up with a bunch of crumpled sheet metal.

Also, Am I better off with an RC or type M?

Or, should I just put two 5" RC's on? They don;t make the M in 5".

lee_7

Use an "M", better in my opinion. YOU will either need to find a 5x6x5 tee or use a5" piece of pipe and use adapter in draft regulator box to cut into pipe.

Chas_9

Ok.

I have to get some custom duct work done and perhaps they can make me a T. I was looking at the (probably 50 year old) install manual for the M control and I don't think that the collar will bend to size very well.

Dick Charland

Use the collar supplied, go with M, the latest cheapo regulators I've seen are incredibly cheap. Field's performance is based on the size/design of the collar, a tee in place of their collar is not recommended. Box usually states sizing 6" regulator will fit 5-6-7 pipe.

Chas_9

Thanks

Finaly had the steely eyed boiler man out today. Draft measured -.04 WC and +03 over fire.. Hmmm. Its running ok. I have a FIC I need to install but that flapper is bugging me. My 6" M came and it was a bit out of round so it sticks. I bent it into shape but why does everything Field make seem a bit hacked? I put the restrictor in the FIC tonight and I needed to use a hammer and block??? It still won;t sit all the way down. Grrrrr...