Taco SR506-5, Instruction Sheet

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SUPERSEDES: New Plant ID # 9300-4099 EFFECTIVE: February 17,2021
For information on Taco’s Switching Relays (SR) including catalog sheet, instruction sheets, Visio stencils
and our highly praised Zone Controls Wiring Guide, scan the QR code to the left or go to our website:
www.TacoComfort.com.
Overview:
The SR506-5 is a six zone switching relay that can have up to 6 thermostats
connected and will operate up to 6 zone circulators, plus 2 auxiliary outputs (AUX) to
control circulators; like boiler and primary loops.
The SR506-5 has a priority zone option, allowing zone 1 to operate and deactivate
zones 2 through 6 during a priority call; this is ideal for when using an indirect water
heater.
The SR506-5 includes timing options for Post Purge, Pump Exercise and Priority
Protection. The SR506-5 includes an energy saving program that can adjust the
temperature of a modulating-condensing boiler or conventual On/Off boiler to
increase the comfort level and use less fuel, without the need to install an outdoor
sensor.
Table of Contents
1. Warnings & Safety Information
2. Location & Installation
3. Operation & Dip Switch Settings
4. Wiring Procedure
5. Product & Applications Diagrams
6. Reset Control Setup & Wiring
7. The Taco eLink mobile app
8. Troubleshooting & FAQ’s
9. Inner Cover Removal & Fuses
10. Specifications
11. Accessories & Replacement Parts
12. Warranty