The Taco® Switching Relay continues to be the best choice for all your zoning needs, with advanced timer, boiler, and relay functions, external diagnostic lights, switchable functions and contractor friendly PC board layouts.
The added Bluetooth® connected app customizes the Switching Relay to your customer’s needs, maximizing the comfort and efficiency they expect.
SR503-5 - 3 Zones Switching Relay
is backordered and will ship as soon as it is back in stock.
Pickup available at Nordik Radiant
Usually ready in 2-4 days
Warranty
This product is covered by a 3 years limited warranty
Delivery and Shipping
Orders are shipped within 2 business days. If a problem prevents us from shipping your order within this time, we will notify you.
Depending on your delivery location, transit time will vary from 1 day to 5 days
Note for US and Internationnal buyers: the customer is responsible for paying any import costs to the shipping carrier, such as duties, import taxes, or brokerage/disbursement fees which may apply upon delivery.
The Taco® Switching Relay continues to be the best choice for all your zoning needs, with advanced timer, boiler, and relay functions, external diagnostic lights, switchable functions and contractor friendly PC board layouts.
The added Bluetooth® connected app customizes the Switching Relay to your customer’s needs, maximizing the comfort and efficiency they expect.
Next Generation Switching Relays
Taco Switching Relays combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic functionality, DIP switch features or the advanced features of the Taco Control mobile app the job is made easy.
External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups. All switching relays are UL listed and compatible with conventional, programmable, and WIFI based thermostats.
Features
• Front Diagnostic Lights
• Switchable Priority
• Built-in Priority Protection
• Simplified Wiring
• Premium Sealed Relays
• Compact Design
• Fuse Protected
• 100% Factory Tested
• Isolated End Switch
• Contractor Friendly PC Board Layout
• Universal Thermostat Compatibility
• 24 Volt Power Output
• For hard wired thermostats
• Field Replaceable Transformer
• Extended 3 Year Warranty
Next Generation New Features
• Built-in; Post Purge and Pump Exercise Functions
• Switchable Primary Circulator Output
• Two Boiler Contacts, Utilizes Full Functionality of Mod-Con Boilers
• Expandable to 20 Zoning Panels (120 zones if all are six zone panels)
• Taco Control Mobile App (not Required for all functions)
• Wireless Update Capabilities
• Four Programmable Outputs
• DHW Recirculation SmartPlus® Logic
• Diagnostic Lights for All Outputs
• Additional Space for Wiring
• More Space To Write Zone Information
• Easy to Remove Hinged Cover
• Rear Knockouts
• Standard Control Upgradeable to Reset Model
• Modbus Communication
Additional Reset Model Features
• Indoor Reset Control (Load Reset)
• Outdoor Reset Control (Weather Compensation)
Taco Control Mobile App
Whether you want to maximize the capabilities of the controller or use it as you always have, the Taco Control Bluetooth® mobile app allows for customization, maximizing comfort and efficiency to any system
The Taco® Switching Relay continues to be the best choice for all your zoning needs, with advanced timer, boiler, and relay functions, external diagnostic lights, switchable functions and contractor friendly PC board layouts.
The added Bluetooth® connected app customizes the Switching Relay to your customer’s needs, maximizing the comfort and efficiency they expect.
Easy to install and seams really solid. Looks easy to change the element if it ever fails in the future or change it to a different size if I missed on my calculations. Has been running my workshop heat for a week now and seems to be really efficient.
I had very prompt service. This pump is beautifully made, and runs silently with minimal vibration. It has snap electrical connections and avoids use of those troublesome twist connectors. This pump is strongly recommended and is at the front of the pack. There is no doubt about that.
