So, I have finished the installation. Still doing final touchups on the coal bin before loading it up and firing it up, along with some wiring 'issues'. I'm hoping someone here can guide me.
"pumping away'" describes and talks about having the circulator in the primary loop run anytime one of the zones calls for heat, but my dilemna is figuring out how this has to be wired up to achieve this.
Here are the parts I have in this configurations at this point:
Honeywell triple aquastat (one on both oil and coal boilers)
1 circulator in primary loop
2 heating zones w/ circulator and single honeywell relay for each( main zone uses the aquastat as the relay)
1 Indirect DHW feed w/ Circ. with honeywell relay and thermostat on Hot water tank
Off the top of my head, the relays are R845's.
Ive been thinking of how to wire these, but the only option I can think of would result in all the circulators running anytime one called for heat....i think(havent tested the planned layout)..but it would invole the primary loop circulator going to a junction box where it would split and have lines running to each of the 3 relays. WIthout testing it, im wondering if that will just link all the circulators together, or if the relay boxes would prevent those circulators from running unless they call for heat. If this doesn't make sense, I can make a drawing.
Anyone have any suggestions? for now, I just have the primary loop circ and the main zone circualator wired together since that is the main zone that is used(the others are the basement..hardly used...and the DHW...which, once i switch it over to the coal boiler, with probably call for heat semi-often.
I asked a few local electricians and supply stores, and they just look at be dumbfonded.
Im sure you guys will be more help. You always have been.
I'll post some pics of the final setup in a day or so, I wanted to just do some touch ups so I can fill the bin and try to fire it up before I go bragging