Honeywell CHRONOTHERM T8621A User Manual

Page 26

Advertising
background image

26

T8621A,C,D

OPERATING THE THERMOSTAT

Press and hold the Time or Temperature
keys until the display shows the desired
new program.

Press and release. The next day will
flash on the display. Press COPY TO
to copy into, or DAY to bypass, the
day. Continue until the program has
been copied into all desired days.

Press and release to return to normal
operation.

Press and release.

Press and hold to change the temperature
setting. After a few seconds, the display
will show the current temperature.

Press and release to check the tempera-
ture setting.

Press and release to cancel manual
control.

Press and hold until the desired time
period shows on the display.

Press and hold until the desired day
shows on the display.

Press and release to cancel the time and
temperature settings for that time pe-
riod. Both the heating and cooling tem-
peratures will be canceled.

Press and release to return to normal
operation.

Copy the new program into other days,
if desired. When copying a program, all
the times and temperatures for that day
are copied.

HOLDING A TEMPERATURE
FOR EXTENDED ABSENCE

This feature is particularly useful when
going on vacation or other extended
absence. It does not cancel the program.

CANCELING PROGRAM
SETTINGS

The thermostat requires time and tem-
perature settings in the MORNING time
period for each day, but any of the
others can be canceled. Each time pe-
riod for each day must be canceled
separately.

Use the copy function to cancel the
program from other days, but remem-
ber that all the programs will be copied,
not just the cancellation.

ON HEAT

SET
PT

ON HEAT

SET
PT

ON HEAT

SET
PT

TUE

LEAVE

PM

MIDDAY

PM

SET
PT

MON TUE WED THU FRI

HEAT

NIGHT

PM

SET
PT

MON TUE WED THU FRI

HEAT

NIGHT

SET
PT

MON TUE WED THU FRI

HEAT

EVENING

PM

SET
PT

MON TUE WED THU FRI

HEAT

EVENING

WARMER

COOLER

COPY

TO

DAY

AHEAD

BACK

COPY

FROM

WARMER

COOLER

PERIOD

DAY

RUN

PROGRAM

RUN

PROGRAM

RUN

PROGRAM

HOLD
TEMP

CANCEL

PERIOD

NIGHT

PRESENT

SETTING

Advertising