taco wiring zone valves and circ

shawn laverty

I have a existing oil fire boiler with 1 circulator running 2 zone valves. The existing boiler has a tankless that is gone and the Homeowner wants to install a 40 gallon superstor indirect heater. I know how to wire the system with all zone valves including the indirect tank using a taco 3 zone control with priority but i would rather run a circ on the storage tank loop. I am not sure if i just use a 2 zone switching relay for pumps and wire the indirect on priority and move the existing circ. (which is currently running to the c1 and c2 terminals on the aquastat) to the new relay box but im not sure what goes into the thermostat connection on that side seeing we are using zone valves. I mean does it just make sense to run a zone valve for the storage tank just not sure of the cons to this besides being slow opening any help i would appreciate.

Thanks shawn

Brad White_203

Taco Has

a concise, all-products wiring guide. Much sought after, meaning that many heating contractors want to get copies for their electricians. I am not sure if it is on the Taco-HVAC.com web site, but they can direct you.

I have mine and you can't have it

shawn laverty

Thank you brad I appreciate it.

John Barba_6

Available online

You can download the whole enchilada...

http://www.taco-hvac.com/en/products/Switching Relays/products.html?current_category=139#

JMB