Installing Batteries - Honeywell T8602C Chronotherm IV Manual

A.
ENGAGE TABS AT TOP OF
THERMOSTAT AND MOUNTING PLATE.
Fig. 11. Swinging cover open to check operation.

Installing Batteries

IMPORTANT
Batteries must be installed for programming and
operation of the thermostat and heating/cooling
system.
1. Use two AA alkaline batteries; nonalkaline batter­
ies will not last as long, and can leak, causing dam­
age to the thermostat or wall surface. Energizer
batteries are recommended.
2. Make sure the thermostat is set to the Off position.
3. Use a coin to remove the battery door. See Fig. 12.
4. I nstall the new batteries; be sure positive and neg­
ative terminals are oriented correctly. See
Fig. 13.
5. Replace battery door.
B.
PRESS LOWER EDGE
OF CASE TO LATCH.
As the batteries are running low, a "bAt Lo" indicator flash
for one to two months before batteries run out
completely. Replace the batteries as soon as possible
after the indicator starts flashing.
After the batteries are completely dead, bAt Lo indicator
disappears, leaving the display completely blank and the
heating and/or cooling system not operating.
To remove batteries, press down on the left ends. If the
new batteries are installed within 20 to 30 seconds of
removing the old ones, the thermostat does not require
reprogramming. If the display is blank, the batteries are
dead or incorrectly installed and the thermostat has to be
reprogrammed. See Owner's Guide for programming
instructions.
5
ELECTRONIC PROGRAMMABLE THERMOSTATS
Fig. 13. Installing batteries.
SWITCH
M5782
6 9 - 1 6 3 3 -2