Bypass Line Plumbing Question

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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papcun52
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Posts: 5
Joined: Sun. Oct. 19, 2008 11:59 am
Stove/Furnace Make: efm
Stove/Furnace Model: 520 boiler

Post Tue. Oct. 21, 2008 9:51 pm

I'm only a novice plumber here. My father-in-law, call him Joe (not Joe the plumber, of course) and I were arguing about the way the water is going to flow through this bypass line. Does it matter if the bypass line comes off the return before or after the first return portal? In any case Joe thinks that the water will flow from the supply line to the return line and then back into the boiler, instead of from the return line to the supply line and back to the radiators. Are we just over analyzing the situation? What makes the water flow in the proper direction?

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cArNaGe
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Location: Montrose, PA
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Post Tue. Oct. 21, 2008 11:05 pm

Where are your circulators or circulator at? Or Zone Valves?

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stoker-man
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Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Wed. Oct. 22, 2008 5:55 am

Hand valves are installed to balance the flow of water. This can be an experimental process, as I found out with my own zone valves, in a slightly different situation.

Since I "dump" my wood boiler heat into my first and second floor without the use of a thermostat, the second floor was getting all the heat because it was the last zone on the supply line. I had to practically close that hand valve to get water to go into the first floor, which is the zone before the second floor on the supply line.

In the end, the one hand valve is fully open and the other is almost fully closed, and now I have a balance of heat between the two floors.
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papcun52
New Member
Posts: 5
Joined: Sun. Oct. 19, 2008 11:59 am
Stove/Furnace Make: efm
Stove/Furnace Model: 520 boiler

Post Wed. Oct. 22, 2008 7:38 pm

My pump is on the return line close to the boiler. In fact there is no room on the return line for anything between the pump and the boiler. I'm probably going to put my bypass in between the two return entry points. I have three branches in my supply line and each of these have a control valve.

Mark (PA)
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Posts: 383
Joined: Thu. Feb. 28, 2008 9:40 am
Stove/Furnace Make: 1953 EFM SF-520 High Boy
Stove/Furnace Model: Fitzgibbon Boiler
Location: South Central, PA

Post Wed. Oct. 22, 2008 8:36 pm

my bypass returns there (between the return ports) and works well. I don't think you'll have any trouble with it there on the returns.

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