Recent content by ABM1

Why not just switch out your current pumps to Grundfos alpha pumps? Seems like these would work.

I also agree with Anthony666 on needing a large storage if using a coil in the furnace or a dump zone (possibly a storage tank) to lose excess heat if you start to get too hot so it doesn't blow a relief (also a must have).

You can use the low voltage thermostats as mentioned above with a relay box or you could just run it all off of line voltage. I personally ran mine all off of line voltage even though I have both types of equipment available. My thoughts are that it makes one less thing to fail as the low...

One other thing I'll add after reading your initial post again - those lines running underground need to be separated with insulation to keep the cold return from pulling heat from your hot feed line. Also another concern is keeping groundwater away from the lines as it will quickly pull heat...

You really need to look at the pump curve charts and size it according to that. On my system I ran my main feed line (1 inch) through a flat plate heat exchanger to make hot water and then out to my two zone system (which I'm running with two smaller circulators controlled by thermostats) that...

It doesn't matter that you are pushing water up to a different height, only the actual head loss through the runs you have and how many gallons per minute or as the heating guys refer to it as how many feet per second you need through the pipes to remove entrained air and not have water noise...