Burnham V8 piping?

Unknown

Billy,
We would prefer that you install a boiler bypass on the V8 boiler to deal with cooler return water. This is the diagram that is shown in the manual. What you are describing is what we refer to as a system bypass whereby hotter supply water is bypassed to the return to keep it warm. The boiler bypass diverts cooler system return water to the supply and reduces the gpm flow of return water through the boiler, thus allowing it to remain warmer. Here are a couple of graphics showing the boiler bypass piping with our Series 2 gas boiler. Although the tappings are in different locations, the idea is still the same. Also, if this boiler is cold start, it should have the L8148A aquastat control. Hope this helps.

Glenn Stanton

Manager of Training

Burnham Corp.

johny

Burnham V8 Piping?

I am installing a v8 boiler in house which is over radiated and I want to protect boiler from low return water temps[also bring boiler up to temp faster to prevent condensing].Boiler is sized to heat loss of house but radiators output is 40k more btu's.On the installation manual the bypass line is from the main return to main supply out of boiler which is on suction side of circ.,pumping away.My question is shouldn't the bypass line come off of disharge side of circ.,pumping back to return main so that hot water is mixed with cool return water to bring boiler temp up faster.Boiler is cold start with Honeywell R8124 aquastat and tstat is satisfied with 135-140 deg. water temps and return temps are 115-120 degrees.I must be missing something.I realize boiler will come up to temp faster piped either way but do not understand why bypass is piped around boiler instead of off circ. discharge and back to return main to mix temps...Confused any comments greatly appreciated.

johny

My mistake

Aquastat is L8148A.Thanks for help.