Wiring Guide
Table Of Contents
- Thermostat Input (24 vac):
- Power Input (120 vac):
- Circulator Output; Secondary / AUX 1 (120 vac):
- Circulator Output; Primary / AUX 2 (120 vac):
- H Connect the Hot output to Hot power input on circulator.
- Circulator Output; Priority Zone / AUX 3 (120 vac):
- 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
- 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-V – 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. OFF – Time D elay 2-Wire
Conceptual Sketches Only, refer to individual manufacture’s
installation instructions for additional details. Local codes shall prevail.