Wiring Guide
Table Of Contents
- Thermostat Input (24 vac):
- Power Input (120 vac):
- Circulator Output; Zones 1-6 (120 vac):
- Circulator Output; ZR / AUX 1 (120 vac):
- Circulator Output; Primary / AUX 2 (120 vac):
- H Connect the Hot output to Hot power input on circulator.
- Low Limit Aquastat / Tankless Coil Application (120 vac):
- SmartPlus Recirc Logic Sensor
- -Connect the strap-on sensor to the two terminals labeled Recirc Sensor on switching relay.
- SAFETY NOTICE
- TWO SEPARATE sources of power may be connected to an oil boiler’s aquastat control.
- Zone naming
- Programmable output naming
- Alerts & messages
- Post purge time delay adjustment
- Pump exercise time delay adjustment
- Priority protection time delay adjustment
- Indoor boiler reset
- Outdoor boiler reset
- SmartPlus® DHW recirculation logic
- AUX 1 output behavior
- AUX 2 output behavior
- AUX 3 output behavior
- Cooling function
- Zone association
- For your convenience, the Taco Tech Support team is available anytime 24/7. Just call 401-942-8000 for help.
2. Location & Installation:
Planning:
Included in Package:
SR506-5 switching relay; six zone
2 Spare fuses attached to inner cover
Instruction sheet
Strap-on temperature sensor
Tools & Material Needed:
Small straight blade screwdriver
Phillips screwdriver
Torpedo level
Wire strippers
Screws or hardware for mounting
Electrical connectors for field wiring
Low and live voltage wiring (per code)
Location: Do not mount to a surface that exceeds 104°F (40°C). The unit must be only located in dry
interior locations. Use only copper conductor supply wire suitable for at least 105° C. All circuits
must have a common disconnect and be connected to the same pole of the disconnect. Product is
not suitable for installation in hazardous locations.
Installation:
1. Hang the panel on a wall with one mounting screw.
2. Level the panel.
3. Install other 3 mounting screws










