Honeywell TH4000 Series Operating Manual page 2

CAUTION: EQUIPMENT DAMAGE HAZARD.
To prevent possible compressor damage, do not operate cooling system when outdoor
temperature is below 10°C (50°F).
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Copyright © 2013 Honeywell International Inc. All rights reserved.
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This manual covers the following models:
TH4110D: For 1 Heat/1 Cool systems
TH4210D: For 2 Heat/1 Cool heat pump systems only
(Pull thermostat from wallplate and turn over to find model number.)
Patents pending.