Install Batteries; Install Thermostat - Honeywell RTHL3550 Owner's Manual

7 Install Batteries

Install two AA alkaline batteries.

8 Install Thermostat

onto Wallplate
Install thermostat onto the wallplate
on the wall.
9 Turn Power Back On
Turn the power back on to the
heating/cooling system.
Back of thermostat
Circuit breaker box
8
M28346
or
Heating/cooling system
M31544
power switch
MCR32613