Taco TSR502-4 Two Zone Sw Relay

Product Description

Taco Sw Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority sw, or add-on power 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 sw relays are UL listed, and are compatible with conventional and programmable thermostats. For those larger jobs, the -EXP Sw Relays can be expanded up to 120 zones (20 zoning panels) with priority. Taco Sw Relays are available in one, two, three, four, and six zones.

From the Manufacturer

Taco Sw Relays combine clearly-labeled PC board layouts with advanced features that allow you to completely customize your system. And whether you're using basic priority sw, Taco Plug-In PowerPort Cards or add-on power controls, tailoring the system has never been easier. External indicator lights give you instant diagnostic feedback, making service calls or new installation start-ups a snap. All sw relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, sw relays can be expanded up to 20 zones with priority. With the exclusive Taco PowerPort Plug-In Cards, you can easily add such features as post purge, priority protection and pump exercise. Any expandable sw relay can also interface with the Boiler Reset Control and Injection Mixing Add-On Power Controls. Mix-and-match as needed to customize the system.

• Number of Zones: 2.
• Expandable to 120 Zones (20 Zone Panels); Includes the Priority Zoning Circulator.
• External Diagnostic Lights.
• Fully Enclosed Snap-Out Relays.
• Universal Design: Cold Start or Tankless Boiler.