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Taco Circulator Pump Relay
Pump Zone Control in Hydronic and Radiant Heat Applications

Taco Pump Relay Features:
  • Taco SR501-2
  • Double Pole - Single Throw (DPST)
  • Connects directly to thermostat
  • Switches 110 volts or 24 volts
  • LED Status Lights
  • Can be used to switch on circulator and boiler at the same time
  • Taco SR502-2 through SR506-2
  • Single Pole - Single Throw (SPST)
  • Connects directly to thermostats
  • Switches 110 volts for circulators
  • Switches 24 volt for boiler connection
  • Taco SR502-2 through SR506-2 have priority capability for domestic hot water
  • LED Status Lights
  • Can be used to switch on circulator and boiler at the same time
  • Taco SR501-EXP-1 through SR506-EXP-1
  • Connects directly to thermostats
  • Switches 110 volts for circulators
  • Switches 24 volt for boiler connection
  • Taco SR503-EXP-1 through SR506-EXP-1 have priority capability for domestic hot water
  • Can be used to switch on circulator and boiler at the same time
  • LED Status Lights
  • Exapandable to 20 Zones
  • Plug-in PowerPort Card Slots
  • Add-on Power Control Plug
  • Optional Cards Available:
    • Post Purge Timer - PC600-2
    • Priority Protection - PC605-2
    • Universial Timer - PC610-1


Return to Hydronic Heating Supplies Main Page

See Prices and Info for Taco Relay Controls for Taco Pumps and Grundfos Pumps

Taco Relay SR-501 to SR506 Manual

Taco Relay SR-501-EXP to SR506-EXP Manual

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  Just Some of our Winter Products - Click Images for more information:
High Efficiency Gas Boilers. Embassy ONEX Gas Boiler, Triangle Tube Gas Fired Boiler, Heat Flo Indirect Storage Tanks! Hydronic Heating - Pumps, Controls, Valves and more. Taco Pumps, Taco Zone Valves, Honeywell Controls, Watts, Azel, Taco Mixing Valves, Cash Acme, Caleffi and more. Gas Space Heaters. Rinnai Space Heaters, Monitor Gas Heater, Eskabe Heaters, Robur Heaters, Empire Gas Heaters PEX Tubing - PEX Radiant Heat! PEX Underfloor heating. Efficient and Warm. PEX tube in 3/8 to 1 inch sizes. Bosch Gas Tankless Water Heaters! Bosch Instant Hot Water Heater for single and multi use. Bosch Water Heaters! Electric Boilers for Hydronic Heating Systems, Radiant PEX Tubing Systems or any hydronic appication where electric rates are inexpensive Solar Heating - Solar Pumps, Solar Controls and more! Solar Panels for use on domestic hot water or pex radiant heating systems. Fantech Heat Recovery Ventilators. HEPA Whole House Filters. HEPA Fitlers. Energy Recovery Fans.
Gas Boilers Heating Supplies Gas Space Heaters PEX Tubing Tankless Water Heaters Electric Boilers Solar Heating Heat Recovery Ventilators

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