Specifications:
Terminals 1 & 2:
Thermostat – 24VAC SPDT 2 wire heating thermostat, or Di-
gital Electronic 2 wire 24VAC thermostat with a maximum
current draw of 30 milliamps.
Anticipator Setting – 0.20.
Cycles –Too frequent, adjust upward. Too long, adjust down-
ward.
Terminals 3 & 4:
Relay – Dry Contact Switch Ratings
• 240VAC 1 Phase 5 Amps
• 115VAC 1 Phase 5 Amps
• 24VAC 1 Phase 5 Amps
Testing Sequence:
1. Restore Electrical Power.
2. Turn room thermostat ‘ON’.
3. Circulator will start:
• Green LED light turns ‘ON’
• Relay-contact will close between terminals 3 & 4
Testing Priority Switch:
1. Turn Priority Circulator room thermostat ‘ON’.
2. Priority Circulator Starts:
• Green LED light turns ‘ON’
• Relay-contact will close between terminals 3 & 4
• All Non-Priority circulators will turn ‘OFF’.
3. Priority Circulator room thermostat turns ‘OFF’.
• Priority Circulator stops.
• Any Non-Priority Circulators will now begin to operate.
BASIC PRIORITY ZONING CIRCULATOR WIRING DIAGRAM
