Honeywell RTH8500 - Setting Functions and Options

51 69-2715EF—07
Setting functions and options
You can change options for a number of system functions. Available functions depend on
the type of system you have. The functions, designated with four-digit numbers, along with
available options are described on pages 52–58.
This thermostat is pre-set for a single-stage heating/cooling system.
Setting function 0170 for a heat pump will adjust the default settings.
DONE CANCEL
PM
6:30
SYSTEM
HEAT
MCR31562
DONE
0120
20
MCR31563
1 Press SYSTEM. You’ll see several blank buttons
on the bottom of the display.
2 Press and hold the center blank button until
the screen changes (approximately 5 seconds).
3 Cycle through the functions, press st next to
the four digit number on the left.
4 As needed, change options for any function by
pressing st next to the number on the right.
5 When you have made all changes, press DONE
to save and exit.