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User Manual
About your new thermostat
The THR870CUK is an easy-to-use thermostat designed to maintain a comfortable environment when you are
at home and reduce energy costs when you are away.
Features
•
Energy-saving design: Automatically adjusts indoor temperature up to six times per day to maintain
optimum comfort when you're at home, and reduce costs during working hours when you are away. Each
day of the week can be programmed separately (see pages 12-13).
•
One-touch comfort control: Allows you to override programmed settings at any time by setting the
indoor temperature manually (see page 15).
•
Day Off button: Sets the system to your preferred Sunday program on any day of the week to maintain a
comfortable environment when you stay home from work (see page 16).
•
Party button: Temporarily overrides the normal program schedule for 1 to 23 hours to maintain a
comfortable temperature while you are entertaining guests (see page 17).
•
Holiday button: Maintains a cost-saving temperature level for up to 99 days while you are away, then
resumes normal operation when you return (see page 18).
•
Summer/Winter time change: Automatically adjusts the clock for standard time or daylight savings time.
•
Optimum Start: Automatically turns on heating system as early as needed so indoor temperature reaches
the level you want at the time you set.
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QUICK START GUIDE
Your new thermostat is pre-programmed and ready to go. Just check the steps below and change
settings if needed:
1 Install and set up thermostat
(if this has not been done by a professional installer) .......................................................... See pages 20-31
2 Select heating (default) or cooling mode ................................................................................... See page 10
3 Customise heating and cooling program settings if necessary .................................................. See page 13
Display screen options: To change the date, time or display screen language, see pages 9 and 28.
homexpert
by Honeywell THR870CUK Programmable Thermostat
tm
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