Operation Manual

19
20
CHECKING THE CURRENT
TEMPERATURE SETTING
Press a single key to compare
current room temperature to the
setting at any time.
PRESENT
SETTING
Press and release. The display will
show the current temperature setting
for several seconds, then revert to
the room temperature.
ON HEAT
SET
PT
ACCSING EXTERNAL SYSTE
OPERATING YOUR THERMOSTAT
EXTERNAL ACCESS AND
CONTROL OF THERMOSTAT
The T8631 Communicating
Chronotherm III Thermostat can
be connected to a Honeywell
TotalHome system for external
access and control.
A TotalHome system allows you
to change thermostat settings
from the system's user interface
panels. depending on the system
chosen, you can also use a
touchtone phone to adjust your
setting. Whenever the thermostat
is controlling to TotalHOme
system setting, a ▲▲ appears
under the room temperature
display.
You can easily make temporary
temperature setting changes by
pushing the
WARMER or
COOLER key on the T8631. The
temporary override setting lasts
until the next period starts. To
permanently change the tempera-
ture set point, push the desired
period key, then the
WARMER or
COOLER key. Use the RUN
PROGRAM
key to change from
external system control to thermo-
stat control of program times and
temperatures until a new command
is received from the TotalHome
system.
The T8631 Thermostat can
communicate on an HBus network
over four-wire conductor cables.
This cable connects to the H1, H2,
H3 and H4 terminals on the
thermostat.
HBus is a Honeywell proprietary
communications protocol.
For assistance, call Consumer
Services, 1-800-468-1502, Monday-
Friday, 7:30 a.m. to 5:00 p.m.,
Central time.
MON
WAKE
AM
SET
PT