CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning installation.
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection is bypassed during testing. To prevent equipment damage, avoid cycling the
compressor quickly.
CAUTION: 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.
REQUIRED: 24 VAC POWER (“C” WIRE)
Compatibility
• Compatible with most heating, cooling, and heat pump systems
• Required: 24 VAC power (“C” wire)
• Does not work with electric baseboard heat (120-240V)
• Does not work with millivolt systems
• Does not support Universal Input (S terminals) for indoor and outdoor sensors
• Does not support Universal Relay (U terminals) for ventilation
• Android or iOS smartphone, tablet, or device
For help, contact:
WEB yourhome.honeywell.com/support
PHONE 1-800-633-3991
SOCIAL Twitter: @Honeywell_Home, Facebook: Honeywell Home
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