Installation - Lennox CS7500 Installation And Setup Manual

WARNING
Always turn off power at the main power source by
switching the circuit breaker to the OFF position
before installing or removing this thermostat.
All wiring must conform to local and national
building and electrical codes and ordinances.
CAUTION
This is a 24VAC low-voltage thermostat. Do not
install on voltages higher than 30VAC.
Do not short (jumper) across terminals on the gas
valve or at the system control to test installation.
This will damage the thermostat and void the
warranty.

Installation

Before beginning installation, note the type of equip-
ment, number of stages, and any accessories being
installed. This thermostat is a 24VAC low-voltage
thermostat and requires a common wire to the ther-
mostat to operate.
DO
• Shut off all power to system before installing.
• Read this entire document, noting which
instructions pertain to your equipment and
system requirements.
• Make sure that all wiring conforms to local
and national building and electrical codes and
ordinances.
• Use thermostat wire between the thermostat and
any optional remote temperature sensor (may
be separate wire pair or two wires of a multi-wire
cable for outdoor temperature sensor).
• Ensure load from any thermostat connection is
less than 1 AMP.
DO NOT
• Install on voltages higher than 30VAC.
• Short (jumper) across terminals on the gas
valve or at the system control to test installation.
This will damage the thermostat and void the
warranty.
• Install on outside walls or in direct sunlight.
• Exceed thermostat wire run length greater
than 300 feet (91m).
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