Honeywell RTH8500 Owner's Manual

3
Installation
Installation ............................................3
Advanced Installation .........................10
About your new thermostat
Controls and Home screen
quick reference ................................... 13
Preset energy-saving schedules ........14
Programming and operation
Setting the clock ................................. 14
Adjusting program schedules ............. 15
Overriding schedules temporarily ......15
Overriding schedules permanently ....16
Filter reminder .................................... 17
Special features .................................18
Replace batteries ...............................18
Appendices
Troubleshooting .................................. 19
Limited warranty ................................. 20
Table of contents
1 Turn Off Power to Heating/Cooling System
or
M31535
Circuit breaker
box
Heating/cooling system
power switch

Honeywell RTH8500 Specifications

General

Hold Feature	Yes
Compatibility	Works with most heating and cooling systems
Temperature Range	40°F to 90°F
Weight	250 g
Programmable	7-day programmable
Dimensions	4.5 x 3.5 x 0.9 inches (114 x 89 x 23 mm)