Description
Function:
- Automates Circulator Pump Operation: Manages the activation and deactivation of a circulator pump in a hydronic heating or cooling system, ensuring efficient water circulation only when needed.
- Single Zone Control: Designed to manage a single zone, meaning it can control one circulator pump and its associated heating or cooling loop.
Key Features:
- Dry Contact Relay: Activates the pump using dry contacts, compatible with various control signals (e.g., thermostats, zone valves).
- External Priority Protection: Prevents simultaneous operation of multiple circulators, protecting against excessive electrical load.
- Compact Design: Occupies minimal space, making it suitable for tight installations.
- Easy Installation: Straightforward to install and wire, typically using screw terminals.
- LED Indicator: Provides visual confirmation of relay operation and pump status.
Common Applications:
- Hot Water Recirculation: Activates circulators to ensure immediate hot water availability at fixtures.
- Hydronic Heating Systems: Controls pumps for zoned heating systems, circulating hot water to specific areas as needed.
- Chilled Water Systems: Manages pumps for cooling loops, providing efficient cooling distribution.
Additional Information:
- Voltage: 120 volts AC
- Maximum Load: 4 amps
- Enclosure Rating: NEMA 1 (indoor use only)
- Available Upgrades: SR502-4 model for multi-zone control (up to 4 zones)
Installation and Use:
- Consult Manuals and Diagrams: Always refer to Taco’s installation instructions and wiring diagrams for proper setup and wiring.
- Professional Assistance: If you’re not comfortable with electrical work, consult a qualified electrician for safe and correct installation.
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