Mounting Thermostat To Wallplate; Installing Batteries - Honeywell T8002 Installation Instructions Manual

T8002 PROGRAMMABLE THERMOSTAT
FAN
RELAY
COMPRESSOR
CONTACTOR
1
L1
(HOT)
L2
TRANSFORMER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2 JUMPER Y TO W.
3
JUMPER R TO Rc.
4
USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.
Fig. 7. Typical single-stage heat pump system
Setting Fan Operation (Fuel) Switch
The fan operation (fuel) switch is preset at the factory in
the F position. See Fig. 8. This is the correct setting for
most systems. If this system is an electric heat system or
single-stage heat pump, set the switch to the E position,
which allows the fan to turn on immediately with the
heating or cooling equip-ment in a system where the G
terminal is connected.
FAN OPERATION (FUEL) SWITCH
Fig. 8. Fan operation (fuel) switch.

Mounting Thermostat to Wallplate

1. Slide System switch to Off position.
2. Engage the tabs at the top of the thermostat and
wallplate.
3. Swing down the thermostat and press the lower
edge of the thermostat onto the wallplate to latch.
See Fig. 9.
69-1549
T8002 THERMOSTAT
G
Rc
3
R
W
4
B
Y
2
O
COOL
CHANGEOVER
VALVE
HEAT
CHANGEOVER
VALVE
hookup.
E
F
A
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Fig. 9. Mounting thermostat to wallplate.

Installing Batteries

The thermostat requires three AA alkaline batteries to
operate:
1. Remove the battery door, located on the right side
of the thermostat, by pulling outward from the bot-
tom. See Fig. 10.
2. Insert the three AA alkaline batteries (included) as
shown in Fig. 10.
M20530
NOTE: The thermostat shows a "bAtLo" message on
the digital display to alert the homeowner one to
two months before the batteries run out com-
pletely.
IMPORTANT
Homeowner should replace the batteries once a
year to prevent leakage and/or the heating/cool-
ing system from shutting down due to lack of
battery power in the thermostat.
4
DASHED LINES INDICATE TABS
ON BACK OF THERMOSTAT
ENGAGE TABS AT TOP OF THERMOSTAT
WITH SLOTS ON WALLPLATE.
H o l d
T U E
S e l e
B
PRESS LOWER EDGE OF
CASE TO LATCH.
c t
M20513