I'm looking to do a quick down and dirty install at this house for this winter on the cheap. I'm not skimping, but I'm not doing a full build out this year either. I have the money to plant my boiler on a slab, bury the Logstor I just got from Slimjim, and everything else I need to be done tinkering with the outside portion of the boiler for all future buildouts of the system. All I'm doing in the house for this year is a water to air heat exchanger in my duct work. I'm not even going to try heating my domestic water for now.
My old system, I used a manifold system with a big pump pushing water through the whole thing and zone valves on the circuits I wanted shut down when they weren't calling for heat -- like the heat exchanger in the duct work. It worked well, but since I have several renovations to do to this house, I don't want to put all of my eggs in one basket by doing a full install right away. I want a single loop into my heat exchanger in the duct work and that's it. I do not want hot water circulating through it when the thermostat in the house is not calling for heat.
I have a Taco 007 stainless from my last install (it was used to circulate domestic water) that fits the bill for my heat load, flow rate, and head. Can I setup the 007 to turn on and off with the thermostat? If the 007 is off, would water still thermocirculate through the loop? If I can't shut down the 007 as necessary, my next thought would be to use a zone valve on the heat exchanger and put a bypass just before the zone valve so the circuit would still flow.
The overall goal here is CHEAP. What do you think?