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Features
- 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.
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.
California residents see
Warning: This product can expose you to chemicals including Lead which is known to the State of California to cause Developmental Harm.
For more information go to: www.p65Warnings.ca.gov
Specifications
SR502-4
Overview
Product Category
Thermostats and Controls
UPC
687752857559
General Information
Type
Relay
Product Category
Thermostats and Controls
Number of Zones
Number of Zones
A zone is a room or area within a building that has its own temperature control.
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Product Q&A
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Product Questions
Answered by Ken, the eComfort Product Expert
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
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Taco Zone Switching Relay - Two Zones
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