Honeywell chronotherm t8621a Manual De Usuario

20

T8621A,C,D

PROGRAMMING THE THERMOSTAT

Choose a day to program first. Monday
is used in the examples. Start by pro-
gramming the MORNING time and
temperatures. The thermostat requires
a MORNING program every day. Set
additional programs as desired.

Program the MIDDAY time and heat-
ing temperature if desired.

NOTE: It is possible to cancel any pe-

riod showing on the display except
MORNING by pushing the CAN-
CEL PERIOD key. To move to the
next period while programming,
simply press the PERIOD key again.

Press and release. Note that the display
shows MORNING and the preprogram-
med time and temperature.

If the display reads COOL, press and
release to switch to HEAT.

Press and hold until MONDAY (or the
desired day) appears in the display.

Press and hold until the display shows
the time that the temperature should be
at the comfort setting.

Press and hold until the display shows
the desired heating temperature.

If the display flashes while holding
down TEMPERATURE WARMER or
COOLER,  the setting limit has been
reached. If thermostat is an auto-
changeover model, the heating tempera-
ture must be at least 3 degrees below the
air conditioning temperature. For ex-
ample, if the cooling setting is 75

°

 F, the

maximum heating setting is 72

°

 F. To

set a higher heating temperature, first
raise the cooling setting.

Press and release. The display shows
MIDDAY, but no time or temperature.

Press and hold until the display shows
the time to start the energy saving pe-
riod.

Press and hold until the display shows
the desired temperature.

SET
PT

MON TUE WED THU FRI

HEAT 

MORNING

AM

SET
PT

MON TUE WED THU FRI

HEAT 

MORNING

AM

SET
PT

MON TUE WED THU FRI

HEAT 

MORNING

AM

SET
PT

MON TUE WED THU FRI

HEAT 

MORNING

AM

SET
PT

MON TUE WED THU FRI

HEAT 

MORNING

AM

SET
PT

MON TUE WED THU FRI

HEAT 

DAYTIME

SET
PT

MON TUE WED THU FRI

HEAT 

DAYTIME

AM

SET
PT

MON TUE WED THU FRI

HEAT 

DAYTIME

AM

MIDDAY

MIDDAY

MIDDAY