Wiring Connection - Honeywell TB3 Series Installation Instructions Manual

TB3 SERIES COMMUNICATING THERMOSTATS INSTALLATION INSTRUCTIONS

WIRING CONNECTION

There are two types of modulating connection diagrams. Refer to the wiring diagram that corresponds to the series
you are using.
TB3140 Modulating Connection Diagram
Connection Diagram for 2-Pipe Fan Coil
TB3240 Modulating Connection Diagram
Connection Diagram for 2-Pipe Fan Coil
NOTE:
The thermostat has no internal fuse. External protection with max C5 A circuit breaker is required in all cases.
Isolate the cables of NTC-dry contact from 230 V(TB3140), 24V AC/DC (TB3240) power supply. The product
supply does not include a 5A fuse.
31-00576-01
Connection Diagram for 4-Pipe Fan Coil
Connection Diagram for 4-Pipe Fan Coil
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