Honeywell RTH7400 Installation Manual page 2

This thermostat provides control of 24 VAC heating and cooling systems, or
750mV heating systems.
This manual covers RTH7400 and RTH7500 models.
(Pull thermostat from wallplate and turn over to find model number)
This thermostat contains a Lithium battery which may contain Perchlorate material.
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate
MERCURY NOTICE: Do not place your old thermostat in the trash if it contains
mercury in a sealed tube. Contact your local waste management authority for
instructions regarding recycling and proper disposal.
For assistance with this product please visit
or call Honeywell Customer Care toll-free at
Read and save these instructions.
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