Need help installing your Honeywell thermostat? Visit here to find your product and the guide you need.. INSTALLATION NOTE: This Communicating thermostat is suitable for mounting on standard 75 X 75 X 52 mm Honeywell recommended back box as per BS4662:2006 + A1:2009 standard or equivalent. The installation of the device should be performed by an authorized technician. Install the thermostat using the screws provided in the box.
Continue with advanced installation on next page to match your thermostat to your sys-tem type. *Heat Pump—an air conditioner that provides cooling in the summer, and also runs in reverse in the winter to provide heating. If you are not sure of your system type or if you have other questions, call us toll-free at 1-800-468-1502.. Need help with installing your T5+ thermostat? View our multi-step guide covering installation, programming, and more in our Honeywell Home Support Center