5
for 5 seconds. Once unlocked, it will relock 2 minutes after the last
keypad press. If any key is pressed and the thermostat is locked,
“Loc” will be displayed in the clock digits.
Option 26 - Minimum Cooling Setpoint
Default: 52
°
F or 11
°
C
Options: Between 52
°
F and 90
°
F or 11
°
C and 32
°
C
Description: Sets the lowest cooling setpoint available.
Option 27 - Maximum Heating Setpoint
Default: 88
°
F or 31
°
C
Options: Between 50
°
F and 88
°
F or 10
°
C and 31
°
C
Description: Sets the highest heating setpoint available.
Step 8 — Set Time and Day Configuration
Setting The Current Time:
1. Press the TEMP/TIME button. SET TIME flashes on the
display.
2. Press the UP or DOWN button until the correct time is dis-
played.
3. To quickly advance to the proper time, press and hold the
UP or DOWN button.
4. When the correct time appears on the display, press the
HOLD/END button.
NOTE
: If you choose not to press the HOLD/END button, the
thermostat will automatically exit the time setting mode after 10
seconds.
Setting The Current Day:
1. Press the DAY button to advance to the correct day.
2. When the correct day appears on the display, press the
HOLD/END button.
Step 9 — Check Thermostat Operation
To finalize your installation, confirm your equipment is operating
properly
Fan Operation
1. Press FAN button. This will start continuous fan operation.
FAN ON icon will turn on.
2. Press FAN button again. This will stop continuous fan oper-
ation. FAN ON icon will turn off.
Heating Operation
1. Press MODE button until HEAT is displayed.
2. Press UP button until LCD readout reads 3
_
F/2
_
C above
room temperature. Press UP and FAN buttons simultane-
ously to defeat timers. Heating system should begin to oper-
ate immediately.
3. For Heat Pump (HP) applications only, press MODE button
until EMHT (emergency heat) appears. Press UP and FAN
buttons simultaneously to defeat timers. Emergency heating
(W is ON, Y is OFF) should begin immediately.
Cooling Operation
1. Press MODE button until COOL is displayed.
2. Press DOWN button until LCD readout reads 3
_
F/2
_
C be-
low room temperature. Press UP and FAN buttons simulta-
neously to defeat timers. Cooling system should begin to
operate immediately.
NOTE
: the thermostat uses timers to protect your system from
running heating or cooling cycles which are too short. Allow five
minutes between heating and cooling changes.
!
Warning!
To avoid possible compressor
damage, do not run cooling if the outside tem-
perature drops below 50
_
F (10
_
C).
Table 1 shows the thermostat outputs for each available stage of
heating or cooling. It may be useful in checkout or
troubleshooting.
Table 1 – Outputs
EQUIPMENT
CONFIGURATION
OPTION #1
COOL
STAGE 1
HEAT
STAGE 1
HEAT
STAGE 2
EM HEAT
AC, PC
Y, G
W
- -
- -
HP, PH
RVS = C
Y, G, O/B
Y, G
Y, G, W
W
HP, PH
RVS = H
Y,G
Y, G, O/B
Y, G, W, O/B
W
WIRING DIAGRAMS
A06566
Fig. 1 - Conventional A/C Typical Installation
Equipment configuration: AC
A150243
Fig. 2 - A/C Installation, No Common Wire
Equipment configuration: AC
