Typical 1H/1C System: 1/2 Transformers; Wiring Diagrams - Honeywell FocusPRO TH6220D Installation Manual

FocusPRO ™ TH6220D Programmable Thermostat

Wiring diagrams

Power supply. Provide disconnect means and overload protection as required.
Factory-installed jumper. Remove for 2-transformer systems only.
Optional 24VAC common connection.
In Installer Setup, set system type to Heat Only.
In Installer Setup, set system type to 1Heat/1Cool Heat Pump & changeover valve to 0 or B.
In Installer Setup, set system type to 2Heat/1Cool Heat Pump.
L terminal is powered continuously when thermostat is set to Em Heat.
Install field jumper between Aux and E if there is no emergency heat relay.
In Installer Setup, set system type to 2Heat/2Cool conventional.
Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers
5
Remove
jumper