Yes I just want to make sure Im getting the GPM By using a second pump . You say series do you mean one in front of the other ?
or one on the incoming and one on the out going ? Im still thinking of adding 2 small air ex changers in my system. Im 125 feet to boiler outside . head pressure would be my issue . My baseboard system 1 inch pex al pex from boiler then splits to 2 - 3/4 inch copper
and I have domestic water side arm .
on the pump output side theirs total 6-3/4 3 way zone valves and 1 -19x20 air exchanger in garage . Im pushing it thru lot of zone valves 65 feet of baseboards.. this same taco 011 that pressure checks 10 GPM . this system is 20 years old . house is 2450 sqft counting up and down stairs . one level is 1225 spft . garage is about 600 sqft .
this my system Needs more heat to house subzero only holds 55-65f and its a head scratch er.
how to fix it or just install air ex changer and run duct work and make the baseboard system a plate ex changer secondary.
This was a great system until off peak electric started going up
we used that for subzero days now it would cost to much .
other system Im installing were still ordering parts and fittings insul seal etc .
Heat550
Putting 2 pumps in series will double the head pressure but the max gpm will be the same as one pump.
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