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Taco Zone Switching Relay - Two Zones

Taco Zone Switching Relay - Two Zones
Model: SR502-4
$120.95
In-Stock
Ships Monday, Aug 20th
 
No Sales Tax* (Except IL)$120.95Buy Now
No Sales Tax* (Except IL)$120.95Visit Site

(as of 09:07 CST - Details) Sales Tax Extra $128.98Visit Site
In-Stock
Ships Monday, Aug 20th
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Shipping Info
*We currently CANNOT ship this product to Canada or any destination outside of the United States
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Product Description
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Features
Features
    Taco's SR502-4 is a two zone pump switching relay. With universal thermostat compatibility, it is designed to integrate quickly and effortlessly into any hydronic system, bringing Taco reliability to your zoned operations. The SR502-4's enclosure is unobtrusive and easy to mount in tight spaces, and the PC board was designed for quick maintenance and clean, simple wiring.
  • Simple Servicing
  • Easy-to-interpret external diagnostic lights and "ice cube" style replaceable relays mean that servicing a Taco switching relay is always easy.
  • Protected Priority Switching
  • With the SR502-4, a single zone may be designated as a priority zone whose heating demands are given precedence over other zones. Other demands will be met when the priority zone is satisfied or after sixty minutes of priority operation.
Specifications
General Information
UPC
687752857559
Features
Features
    Taco's SR502-4 is a two zone pump switching relay. With universal thermostat compatibility, it is designed to integrate quickly and effortlessly into any hydronic system, bringing Taco reliability to your zoned operations. The SR502-4's enclosure is unobtrusive and easy to mount in tight spaces, and the PC board was designed for quick maintenance and clean, simple wiring.
  • Simple Servicing
  • Easy-to-interpret external diagnostic lights and "ice cube" style replaceable relays mean that servicing a Taco switching relay is always easy.
  • Protected Priority Switching
  • With the SR502-4, a single zone may be designated as a priority zone whose heating demands are given precedence over other zones. Other demands will be met when the priority zone is satisfied or after sixty minutes of priority operation.
Specifications
General Information
UPC
687752857559
Product Specs
+
Specifications
General Information
UPC
687752857559
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Product Q&A
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Search Product Q&A's Answered by Chris, the eComfort Product Expert
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Have a Lochinvar boiler with a DHS tank and one circulator pump feeding an air handler. Need to add another line with a 2nd circ pump. Will this SR504 work? That will give me 4 pumps then, the hot water, boiler, and the two circs. If this one won't work what would you suggest.
Robert 
from Alaska 
October 07, 2015
Answer
The Taco SR series relays can support from 2 to 6 zones, depending on the specific model. The SR504-4 can absolutely be used to control your 3-zone circulators, but you will need to use the circulator relay on your boiler, or a separate circulator relay for your boiler pump depending on when you need it to operate.
How-To Articles
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