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3-Zone Expandable Switching Relay with Priority

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Taco Comfort Solutions SR503-EXP 3-Zone Expandable Switching Relay with Priority

Item #: SR503-EXP by Taco Comfort Solutions

UPC #: 687752857597

Item Discontinued!
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The item is currently out of stock and it may or may not be restocked
OUT OF STOCK

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Warranty

For warranty information on this product, please call vendor at 1-888-402-4328

Pack Size

1

Manufacturer Warranty

For warranty information on this product, please call vendor at 1-888-402-4328

HVAC Product Type

Relay

Product Depth (in.)

11.5

Product Height (in.)

3.375

Product Width (in.)

4

Taco Switching Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority switching or the advanced features of the -EXP controls, the job is made easy. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. All switching relays are UL Listed, are compatible with conventional and programmable thermostats.

  • Front diagnostic lights
  • Switchable priority
  • Built-in priority protection
  • Simplified wiring
  • Premium sealed relays
  • Compact design
  • Fuse protected
  • 100% factory tested
  • Isolated end switch
  • Contractor friendly pc board layout
  • Universal thermostat compatibility
  • Add-on power control plug
  • Built-in, post purge and pump exercise functions
  • Switchable primary circulator output
  • 2-boiler contacts, utilizes full functionality of mod-con boilers
  • Expandable to 20-zoning panels (120-zones if all are 6-zone panels)