Honeywell PRO TH4110D User Manual download pdf (Page 7)

PRO TH4110D Programmable Thermostat

Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers

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.

Wiring diagrams

Typical 1H/1C heat pump system Typical heat-only system

Typical heat-only system with fan Typical cool-only system

Remove jumper

1 2 3 4 5 6 7 8 9 10 11 12 ... 15 16

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Honeywell PRO TH4110D User Manual Page 7