User Manual

Installation
2
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● Observe local codes regarding wire type, overcurrent protection and ground.
● For HVAC systems with a single transformer, the RH-RC jumper must remain in
place. If separate transformers are used for heating and cooling systems, remove
the RH-RC jumper.
● AC 24 V supply line must have a circuit breaker with a rated current of no more
than 4 A. The total current rating should not exceed 3.3 A. For AC 24 V US
installations, use Class 2 transformers.
● Disconnect from power supply before removing the front module and the mounting
plate.