I am still struggling to understand what controls, relays, aquastat etc. I will need to obtain to operate the zones in my yet to be installed system. I have only two zones. One zone is for the W/A hx, the other is for the DHW flat plate hx. They will be parallel plumbed according to BioHeat plumbing diagram PT3, http://www.woodboilers.com/uploads/public/PressureTank(PT3).pdf (Please copy and paste the whole link into the address bar as the last three letters didn't highlight).
This is what I am designing for and what I need to do:
I have a two position 24 volt motorized ball valve, substituting fot zone valve ZV1 in the PT3 diagram, that needs to be operated by a single pole double throw switch. When open it allows the heated water from my Solo Innova to go to the W/A hx above the existing forced hot air furnace, and/or the DHW flat plate hx. When closed all heated water goes to 1000 gallons of storage.
1. When the temperature in the house falls or rises, a thermostat needs to turn on or off the circ pump for the w/a hx, and at the same time open or close the motorized ball valve.
2. When the 40 gallon DHW tank calls for heat, the the aquastat located near the bottom of that tank needs to turn on two 120 volt circ pumps servicing either side of the DHW flat plate, as well as open that same 24 volt motorized ball valve. When the DHW is up to temp the aquastat control will need to shut off both circs and close the motorized ball valve.
I am not sure how to set all this up. Will I need additional relays? I do have a 24 transformer that came with the boiler. What would be the easiest way to set up the controls and what control devices/relays would be appropriate to use for these two zones?
For DHW use, what do you normally set the differential settings at on adjustable controllers?
Mike
This is what I am designing for and what I need to do:
I have a two position 24 volt motorized ball valve, substituting fot zone valve ZV1 in the PT3 diagram, that needs to be operated by a single pole double throw switch. When open it allows the heated water from my Solo Innova to go to the W/A hx above the existing forced hot air furnace, and/or the DHW flat plate hx. When closed all heated water goes to 1000 gallons of storage.
1. When the temperature in the house falls or rises, a thermostat needs to turn on or off the circ pump for the w/a hx, and at the same time open or close the motorized ball valve.
2. When the 40 gallon DHW tank calls for heat, the the aquastat located near the bottom of that tank needs to turn on two 120 volt circ pumps servicing either side of the DHW flat plate, as well as open that same 24 volt motorized ball valve. When the DHW is up to temp the aquastat control will need to shut off both circs and close the motorized ball valve.
I am not sure how to set all this up. Will I need additional relays? I do have a 24 transformer that came with the boiler. What would be the easiest way to set up the controls and what control devices/relays would be appropriate to use for these two zones?
For DHW use, what do you normally set the differential settings at on adjustable controllers?
Mike