“No more problems with boards burning up. Has a place for therm c-wire hook up. Fuses on every zone and all solid state. Post purge now built in. Circ exercising built in. Close to perfect.”
“Works perfectly. Built a combo domestic hot water system with radiant heating loop with primary pump and (3) secondary zone pumps. Utilized the 4th zone to input my domestic water switch to activate the primary pump. Works flawlessly.”
“This is a great single pump switching relay. Very simple two-wire setup. I always have one of these on the truck in case I need to power a circulator pump. Just run the thermostat wire to it and it can also send a signal/TT to the boiler.”
“I replaced my 3 zone controller with this 4 zone controller... There is a selectable zone priority switch, and a 24vac output for thermostats. Little pricey, but you get what you pay for.”
“Added another zone for heat. Rather than buying the single zone controller and adding it to the existing controller for a few dollars more, I just replaced the entire unit—works well, just as expected.”
