Wiring Diagrams - Honeywell PRO TH3110D Installation Manual

PRO TH3110D Non-programmable Digital Thermostat

Wiring diagrams

1 Power supply. Provide disconnect means and overload protection as required.
2 Factory-installed jumper. Remove for 2-transformer systems only.
3 Use either O or B terminals for changeover valve.
4 Use a small piece of wire (not supplied) to connect W and Y terminals.
5 Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8).
6 Optional 24 VAC common connection.
Typical 1H/1C system: 1 transformer
Typical 1H/1C heat pump system
Typical heat-only system with fan
Typical 1H/1C system: 2 transformers
Typical heat-only system
Typical cool-only system
5
Remove jumper