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| Mounting Type | Plug In Mount |
| Brand | Taco |
| Specification Met | Certified frustration-free |
- Four zone with priority
- External Indicator Lights
- Switchable Priority
- Simplified Wiring
- Fully Enclosed Snap-Out Relays
- Amperage: 20
From the manufacturer
Thank you for choosing Taco for your HVAC needs.
Taco is a third generation, family owned American manufacturer of the highest quality comfort solutions for residential and commercial applications.
- Established in 1920
- Family owned and operated
- 500+ employees
- American made products
Taco SR504-4 Switching Relay, 4 Zone
The best choice for all your zoning needs
The Taco Switching Relay is the best choice for all your zoning needs, with advanced timer and boiler functions, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integration is achieved. Additional features include built-in priority protection, premium sealed relays, compact design, fuse protected, isolated end switch and universal thermostat compatibility.
- Front Diagnostic Lights
- Switchable Priority
- Built-in Priority Protection
- Simplified Wiring
- Premium Sealed Relays
- Fuse Protected
- Contractor Friendly PC Board Layout
- Extended 3 Year Warranty
- Made in the USA
Features
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External DiagnosticsIt’s no longer necessary to open the box to troubleshoot the system. Externally visible lights show full functionality of the switching relay. The green light should always be on, indicating that power is connected. When the thermostat calls for heat, both the appropriate circulator and red indicating light is energized. | Simplified WiringTaco Relays are solid state switches, rather than ice cube switches for longer life. Each one is fuse protected. | 3 Year Extended WarrantyTaco, Inc. will repair or replace without charge (at the company's option) any product or part which is proven defective under normal use within three (3) years from the date of start-up or three (3) years and six (6) months from date of shipment (whichever occurs first). |
Product Description
Product Description
The Taco Switching Relay is the best choice for all your zoning needs, with advanced Power Port Cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the "00" family of circulators and thermostats, total system integration is achieved.
From the Manufacturer
Taco Switching 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 switching, 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 switching relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, switching 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 switching 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.
Specifications for this item
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