Description
The Switching Relay 306P
connects up to six
thermostats and operates
circulators to provide
heating to a zoned hydronic
heating system. Zone 1 has
optional priority over zones
2 through 6 and can be used
to provide heat to an
indirect domestic hot water
tank. The 306P includes
optional exercising to
prevent circulator seizure
when not in use, and optional
post purge operation of the
last operating zone to
maximize energy savings. The
306P provides a
RoomResponseTM signal to
modulating-condensing boilers
to optimize comfort while
improving boiler efficiency.