Specifications

Product Application
This Comfort Control provides electronic control of 24 VAC single-stage heating
and cooling systems.
System Types
• Gas, oil or electric heat with
air conditioning
• Warm air, hot water, high-efficien-
cy furnaces, heat pumps
• Heat only with fan
• Cool only
Power
• Common wire only
• Common wire with battery backup
Changeover Options
• Selectable manual or
auto-changeover modes
System Settings
• Heat, Off, Cool, Auto
Fan Settings
• Auto, On
Must be installed by a trained, experienced technician
• Read these instructions carefully. Failure to follow these instructions can
damage the product or cause a hazardous condition.
• Check the ratings in this booklet to verify that this product is suitable for your
application (see page 12).
• Always test for proper operation after installation (see page 8).
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before
beginning installation.
MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not
place the old control in the trash. Contact your local waste management authority
for instructions regarding recycling and proper disposal.
This thermostat contains a Lithium battery which may contain Perchlorate material.
Due to State Law in CA, the following statement is required:
Perchlorate Material—special handling may apply,
See www.dtsc.ca.gov/hazardouswaste/perchlorate