Taco SR503-EXP-4
Taco SR503-EXP-4
Taco SR503-EXP-4
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Taco SR503-EXP-4
Taco SR503-EXP-4

Taco Zone Switching Relay - Three Zones - Expandable

Model:

SR503-EXP-4

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Taco Zone Switching Relay - Three Zones - Expandable
Taco Zone Switching Relay - Three Zones - Expandable
Model: SR503-EXP-4
Product Discontinued
Features
Specifications
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Features

    Taco's SR503-EXP-4 is a three zone 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. Post purge and pump exercise operation modes will run your pumps briefly after calls for heat or long periods of inactivity. These improve the efficiency and dependability of your system, respectively. The SR503-EXP-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.

    Product 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 SR503-EXP-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.

    Expandable
    Taco's -EXP switching relays may be combined with other relays or expandable Taco zone valve controls for large scale zoning applications. Up to 20 zoning panels may be connected together, providing you with complete zone control regardless of the scope of your system.

    Add-On Power Controls
    The SR503-EXP-4 is compatible with Taco's PC700 line of supplemental controls. It's easy to add outdoor temperature reset via variable speed pump mixing or boiler reset control.

    Product Compatible with
    • Taco -EXP Expandable Zone Controls
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

SR503-EXP-4
specs product image PID-33780
General Information
Number of Zones Learn More
Number of Zones
A zone is a room or area within a building that has its own temperature control.
3
UPC
687752857597
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Maximum Load
15 Amps
Dimensions
Product Height
7 Inches
Product Width
10 3/4 Inches
Product Depth
2 3/4 Inches
Shipping Weight
4 Pounds
Certifications
UL Listed
Yes
Warranty Information
Warranty Learn More
Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
3 Years

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Manuals

 
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Taco Zone Switching Relay - Three Zones - Expandable
Taco SR503-EXP-4
Taco SR503-EXP-4
Taco SR503-EXP-4
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