Honeywell Chronotherm III T8602A, Installation Instructions Manual, Page: 8 / 12

69-0309—9 8
T8602A,B,C,D AND TS8602A,C Chronotherm
®
III FUEL SAVER THERMOSTATS
M2919
RETURN
MON
HEAT ON
RETURN
MON
HEAT ON
RUN
PROGRAM
TIME
TEMPERATURE
PRESENT
SETTING
SKIP
NEXT
PERIOD
CHANGE
TO LAST
PERIOD
SET
PRESENT
DAY/TIME
HOLD
TEMP
DAY
SET
HEAT/COOL
SLEEP
LEAVE
AHEAD WARMER
RETURN
BACK COOLER
WAKE
A.
B.
C.
PM
PM
Fig. 18. Mounting thermostat on wallplate.
CHECKOUT
NOTE: On models without system or fan switch,
disregard instructions about moving the switch.
Heating
Move the system switch to HEAT and the fan switch to
AUTO. Press WARMER key until the setting is about 10
°
F
(6
°
C) above room temperature. Heating should start and
the fan should run (may be a short delay on forced air
systems). Press COOLER key until the setting is about
10
°
F (6
°
C) below room temperature. The heating equip-
ment should shut off.
Cooling
CAUTION
Do not operate cooling if outdoor temperature is
below 50
°
F (10
°
C). Refer to manufacturer recom-
mendations.
NOTE: When cooling setting is changed, thermostat will
wait up to five minutes before turning on the air
conditioner. This delay protects the compressor.
Move the system switch to COOL and the fan switch to
AUTO. Press COOLER key until the setting is about 10
°
F
(6
°
C) below room temperature. The cooling equipment
and fan should start. Press the WARMER key until the
setting is about 10
°
F (6
°
C) above room temperature. The
cooling equipment and fan should stop.
NOTE: On an AUTO changeover thermostat (T8602D),
the heating temperature must be set at least 3
°
F
(2
°
C) below the cooling temperature, or the
display will flash.
Fan
Move the system switch to OFF, and the fan switch to ON.
The fan should run continuously. When the fan switch is in
the AUTO position, the fan cycles with the heating or
cooling system.
Installer Self-Test (Optional)
Perform the following test as a check of all thermostat
functions. If thermostat does not respond as indicated,
replace the thermostat.
1
Press AHEAD and BACK keys at the same time.
While holding down the keys, all segments of the
display should be on. See Fig. 19.
2
Set system switch to OFF, where applicable. Press
AHEAD and BACK and PRESENT SETTING keys
at the same time to enter self-test.
3
Press each key as listed below, and look for
responses listed as key is held down and released.
Fig. 19. All segments on display.
SUN MON TUE WED THU FRI SAT COOL ON HEAT ON
WAKE LEAVE RETURN SLEEP TEMPORARY
REPL
BAT
AM
PM
SET
PT
M410C M410C