Wiring Diagrams - Honeywell PRO TH3210D Installation Manual

PRO TH3210D Non-programmable Digital Thermostat
Wiring diagram
1 Power supply. Provide disconnect means and overload protection as required.
2 Optional 24 VAC common connection.
3 Use either O or B terminals for changeover valve.
4 L terminal is powered continuously when thermostat is set to Em Heat.
5 Install field jumper between E and Aux if there is no emergency heat relay.
5