Taco Zone Control Wire Diagram 3. When using alternative wiring diagram wiring instructions must be followed so power originates from the boiler aquastat. Taco zone sentry zone valves provide on off normally open or normally closed control in both open and closed hydronic.
When using alternative wiring diagram the boiler oper ating controls zc terminal will see the load of the circulators. Wire diagram for taco zone valves. Zone valve control that has the designated priority zone or is utilizing.
Zone 3 priority off cc con 2 wire zone valve no end switch must use jumper taco 3 wire zone valve 1 2 3 jumper 3 4 taco 3 wire zone valve 1 2 with zone control with indirect dhw with outdoor reset nh input nh r boiler tstat w outdoor supply sensor temperature off 30 10 10 20 on outdoor sensor supply 12 34 zone 1 zone 2 no com 5 amp zone 3.
The explanation below and. If the boiler manufacturer recommends a wiring diagram follow. Use a separate transformer across rc and c on the nest. Description sr501 4 1 zone switching relay sr501 hc 4 1 or 2 zone switching relay high current capacity.