I Don't Care

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Old 04-11-12, 06:51 PM
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I Don't Care

My 60-year-old, gas-fired boiler is running fine. Annual fuel cost is reasonably inexpesive. What's not to like?
 
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Old 04-12-12, 06:11 PM
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Let's see if it is 60 yrs old was it coal fired at one time? If so it has large flue passes, did someone put bricks in them to slow flue gasses?
You know the old saying "if it's not broke don't fix it".
 
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Old 04-16-12, 10:02 AM
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It was designed for either gas or "hand" firing. (I'm not sure why they called coal firing "hand firing.") But, it was never used for coal. Initially, it was fired with propane, and then when natural gas became available, it was changed over.

It is a two-pass, fire-tube boiler. The nameplate lists the heating surface area as 41 sq ft, which seems incredible, doesn't it? The net rating is 168,000 Btu/hr. Turbulators are installed in the tubes for gas or oil firing. I have a brush to clean the fireside of the tubes, but with gas firing, it really isn't necessary.
 
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Old 04-16-12, 06:52 PM
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Ten square feet of heating surface used to be considered one boiler horsepower so that would make your boiler a 4.1 horsepower unit.

I recommend brushing the tubes yearly. Even with gas firing you will accumulate dust on the tubes.
 
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Old 04-16-12, 07:36 PM
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Thanks, Furd.

1 boiler hp = 33,475 Btu/hr

x 4.1 = 137,000 Btu/hr

I think I have plenty of heating surface.
 
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