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.
PA04-C – Oil Fired Boiler with Tankless Coil; Supply & Return Headers
Mechanical Diagram
Electrical Diagram
Dip Swit ch Settings
1. OFF - Master
2. OFF - Priority
3. OFF - Primary Pump
4. OFF or ON - Post Purge
5. OFF or ON - P ump Exerci se
6. ON - ZC Low Limit
SAFETY NOTICE
TWO SEPARATE sources of power may be connected to an oil boiler’s aquastat control.
Before servicing an oil fired boiler make sure the service switch is off. Then confirm that a secondary source of power does not exist to the boiler’s
aquastat control. Failure to fix the problem could result in boiler being activated when zone calls for heat, that could result in serious injury or death.
Conceptual
Sketches Only,
refer to individual
manufacture’s
installation
instructions for
additional details.
Local codes shall
prevail.