Coal boiler bypass

Re: Coal boiler bypass

PostBy: Lightning On: Sat Aug 31, 2013 8:15 am

If he could draw up a schematic of the boilers and their piping and post a picture of the drawing then maybe everyone would get a better understanding of what he needs to do. :idea:
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut Size / White Ash

Re: Coal boiler bypass

PostBy: Scottscoaled On: Sat Aug 31, 2013 8:39 am

He's trying to get rid of the coal boiler.
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 700. Van Wert 1200.
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Coal boiler bypass

PostBy: imaddicted2u On: Sat Aug 31, 2013 10:23 am

Scottscoaled wrote:Sorry, my bad. After looking at the picture again, and not seeing the little note about the bushings and tee's, I see what you are doing. I still don't understand though. The only way those pipes are getting cut, is if the coal boiler is going to be removed. If that is so, why do you need to cut the pipes back to the other side of the copper?

Only reason is to have something to thread in to quickly. If it were faster/easier to install pipe caps, I would. The pipe with the coupling won't have to be cut, it will be removed so the bushings can be installed. The other I will cut because I can't turn it out without taking a lot of piping apart to get back from the coupling in that pipe.
I'm pretty sure the seepage will either stop once the boiler is warmed up and the cast iron expands or boiler seal will do the trick, like I said before, I'm preparing just in case the worst happens.
imaddicted2u
 
Hand Fed Coal Boiler: American Standard Severn (1957) on bituminous
Coal Size/Type: Unscreened-Fist sized lump to powder-Bituminous


Re: Coal boiler bypass

PostBy: imaddicted2u On: Sat Aug 31, 2013 10:53 am

Lightning wrote:If he could draw up a schematic of the boilers and their piping and post a picture of the drawing then maybe everyone would get a better understanding of what he needs to do. :idea:

Excuse my drawing skills...lol
Image
imaddicted2u
 
Hand Fed Coal Boiler: American Standard Severn (1957) on bituminous
Coal Size/Type: Unscreened-Fist sized lump to powder-Bituminous

Re: Coal boiler bypass

PostBy: McGiever On: Sat Aug 31, 2013 11:32 am

Put valves in to isolate coal boiler...to pay now or pay later are your only choices. ;)
And as was previously said, you still need make-up water after isolation.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Coal boiler bypass

PostBy: mdhorvath On: Mon Sep 30, 2013 9:42 pm

I used a national 300 boiler all my life and it always had water in the flue like that. We always just blamed it on condensation. I would still put the valves in though better safe than sorry. You should insulate the coal boiler when running the oil anyway. does the coal boiler get warm when firing the oil if it does your wasting heat. Sectional coal boiler should be taken apart periodically and cleaned, corrosion builds up in there and cracks the boiler at the rods holding it together. I also install lead washers behind the nuts. The lead protects the boiler from cracking and also when it squeezes out you know its time to tear it apart again.
mdhorvath
 
Stoker Coal Boiler: AHS S500 Coal Gun
Coal Size/Type: Pea Anthracite

Re: Coal boiler bypass

PostBy: imaddicted2u On: Tue Oct 01, 2013 3:17 am

Yep, the coal boiler gets hot when firing the oil boiler. It warms up the otherwise cold basement so I don't feel the heat is wasted since it is being released inside the building envelope.
I'm positive the wetness in the heat exchanger is not condensation but is seepage. For all I know, It may well have always had that seepage when the boiler is cold. I have boiler seal just in case the seepage gets worse and fittings ready in case the worst happens and the seepage turns to a leak. If I need to cut the coal boiler out, I'll install the proper isolation valves on its replacement.
imaddicted2u
 
Hand Fed Coal Boiler: American Standard Severn (1957) on bituminous
Coal Size/Type: Unscreened-Fist sized lump to powder-Bituminous

Re: Coal boiler bypass

PostBy: dave brode On: Thu Oct 10, 2013 9:25 pm

Fwiw,

I have tended a big boiler where I work. [3x the size of 2u's]. Probably due to being over-fired often by a prior employee, the rear section is cracked. The crack is at least 12" long. Last year, water was spraying out onto the fire in a stream as big as a pencil. Boiler seal stopped it within a day. It sat all this summer, and had a fire put in last week, still no leaks.

That said, the tapered nipples often leak when those old boilers are cold. Should they? Probably not, but they often do. Opinions vary on what to put on them when assembling. Some say nothing. I used some permatex automotive sealant on the slightly pitted nipples on my old Red Square when I assembled it [NOT rtv]. No leaks there in the 16 years that I used it.

Dave
dave brode
 
Stoker Coal Boiler: Keystoker KAA-2
Hand Fed Coal Boiler: used to have a 5 section Red Square
Coal Size/Type: rice anthracite