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[chiselchain]

should I run my water to my hot water heater or to my furnace first? or does it not really matter? thanks

[willieG]

i run all my appliances in paralel as to not restirct the flow but many run things in series with no problems. if you hoose to run in series i would give the hottest water to the home heating end of things first

[chiselchain]

by parallel do you mean put a t in the supply line to feed both my furnace and side arm?

[willieG]

i use a header system ..wheremy lines come in the house i have a incoming (hot header) with multiple outlets to go to allmy different appliances) and a return header right below it for the cooler water to return to the OWB.   i have valves on all ports so i (if needed ) can adjust flow (so far i have run them all wide open all the time) i have one 1/2 line for a floor loop, one 1/2 line for a small water to air exchanger in my fire place (no more wood in the house) two 3/4 lines to the hot water heat and the furnace.

if i were to run all these diferent lines in series i would be restricting the flow so much i would never have temps above 150 returning to the furnace and that could lead to a lot of corrosion at the OWB

[chiselchain]

im just running my heat exchanger in my furnace and the side arm. so I should be o.k. just running it in a series?

[willieG]

i would guess yes you would be fine  with the proper pump and proper sized lines. As i said many folks here do exactly what you intend to do. As you add 'appliances' in series you can create a lot of unwanted head pressure that puts your pump further and further up its intended pump curve and create many problems..with too many things in series you also have the potential of low return temps that could cause problems if you have a thermostatic control valve in your lines also.

[Scott7m]

We'd have to know some basics of the system but with proper line and pump sizing it would be no problem....   Feel free to call if u have concerns, number in my sig

[chiselchain]

I would say I have a total of a 160ft from wood furnace to heat exchanger. fairly level. running one inch pex and a 34 gallon three speed pump.

[Scott7m]

Pump gallon can't be determined until the total system is sized out.  For example, that pump may pump that many gallons on high with a 2" hose of 1 3/4" or something but if it were longer or smaller diameter gmp drops dramatically

But I'd go to hot water tank first then to home heat source

Does the pump you have show a chart that shows how many gmp it will pump at different head pressures??

[bajonesy77]

I went to hot water first for 1 simple reason. I don't want swings in the hot water temp. Hot water gets the most consistent heat from the stove so not to change water temps while showering etc. I could care less if the furnace has to run for a extra minute. If you run a tempering valve this probably won't make a difference.