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C
A
U
Do not allow wires to touch each other or parts on thermostat. Wires must be
trapped between black spacer and brass terminal. Also, be sure to tighten securely
all terminal screws.
TERMINAL DESIGNATIONS
NEW THERMOSTAT
OLD TERMINAL
TERMINAL
DESIGNATIONS
DESIGNATIONS
B
C, X, X1, X2, Z
TAPE OFF
E, K
G, F
L, A, A1
TAPE OFF
0
R, V
W2, H2, R4, W3, Y
Y, C1, M, Y1
NOTE: A typical hookup will require either a "B" or "O" wire, but not both.
If you have both a "B" and "O" wire, please call technical service.
TYPICAL HOOKUP
Y
W2
G
COMPRESSOR
FAN
RELAY
RELAY
AUX HEAT
RELAY
2
POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
IF YOUR OLD INSTALLATION HAS A "C" WIRE (COMMON WIRE FROM
2
THE TRANSFORMER), TAPE IT OFF. IT IS NOT USED ON THIS THERMOSTAT.
SETTING THE FAN AND SYSTEM SWITCHES
FAN ON
The fan runs continuously for increased air circulation.
FAN AUTO
Normal Setting. Fan is energized with the system.
EMER
Auxiliary heat is used for heating. The compressor is deenergized.
HEAT
The thermostat controls your heating.
OFF
Both heating and cooling are off.
COOL
The thermostat controls your cooling.
T
I
O
TYPICAL
CONNECTION
B
Heating Changeover Valve
Common
E
Emergency Heat Relay
G
Fan Relay
Check Heat Pump Indicator
0
Cooling Changeover Valve
24V System or Heating
R
Transformer
Stage 2 Heating Relay or
W2
Auxiliary Heat Relay
Stage 1 Compressor
Y
Contractor
R
B
O
E
HEAT
CHANGEOVER
EMERGENCY
VALVE
HEAT RELAY
COOL
CHANGEOVER
VALVE
INSTALLING BATTERIES
N
The Unit requires batteries to operate your furnace and
retain its programming in memory. Replace the batteries
when the REPLACE indicator appears in the display or at
least once a year.
When replacing batteries, you have
approximately 1 minute before programs are lost.
1. Remove fresh batteries from their carton.
2. Remove body of thermostat as described at bottom of
first column.
3. Remove the battery clip and batteries.
4. Install two new "AA" size alkaline
batteries in the battery clip. Observe the polarity
marking shown in the clip.
5. Place body back on the wall. Hook the
bottom of the body onto the base, swing the body up,
and snap the body onto the base.
Installation is now complete. Be sure to turn the power back
on to your heating and /or air conditioning system. If this is the first time you are installing batteries, the
thermostat will display "SUN 12:00 AM". Within 90 seconds the thermostat will begin to display the room
temperature alternately with the time. To correct the display, see "Setting the TIME and DAY," after you set
the programs.
OPERATION
The Unit alternately displays the current time
and the room temperature. It also
displays the day of the week and the
currently active program period that is controlling the temperature: MORN, DAY, EVE, or NIght.
The set point temperature will appear in the right side of the display. In the winter, set the system switch
to HEAT to control your heating system. In the summer, set the switch to COOL to control your air condi-
tioner. In spring and fall or when windows are open, you can set the system switch OFF.
Setting the FAN switch to AUTO automatically
runs your system's fan during heating and cooling.
Setting the FAN switch to ON runs your system's
fan continuously even without heating or cooling.
THE BUILT IN PROGRAMS
Push in the RESET key. This sets the
built-in heating and cooling programs.
To review the built-in programs,press
NEXT or PREVIOUS repeatedly; when
1
you are done, press RETURN.
You can use the built-in programs as
L1
shown, or change them as you wish.
(HOT)
Each day is divided into four periods.
L2
Each period has its own starting time
(COMMON)
and temperature.
PROGRAM REVIEW
While the dial is in the RUN position, you may press the PROGRAM REVIEW button. The Thermostat
will show the entire week's programming one period at a time in the display.
This is very helpful to review the thermostat's current programming before making adjustments.
P R O G R A M M I N G
DAY
PERIOD
MONDAY
THROUGH
FRIDAY
SATURDAY
SUNDAY
N O T E
This thermostat is "armchair programmable"
You can make any program or setting
changes with the thermostat body off or on
the wall thermostat base.
N
The FAN switch works only if your system
provides a wire for the Unit's "G" terminal.
WEEKDAYS
preprograms
SAT & SUN
preprograms
HEAT
TEMP .
TIME
MORN
DAY
EVE
NIGHT
MORN
DAY
EVE
NIGHT
MORN
DAY
EVE
NIGHT
B
W2
O
R
Y
G
E
Open
Close
J1
24 Hr
12 Hr
J2
C
F
AA BATTERY
AA BATTERY
REPLACE BATTERIES WHEN
INDICATOR APPEARS
C A U T I O N
The Unit is protected against normal
static electric discharges. However, in
extremely dry weather you should touch
another metal object before the Unit to
avoid potential loss of programs.
O
T
E
PERIOD
HEAT
COOL
MORN
6:00 AM 70° 6:00 AM 75°
DAY
8:30 AM 60° 8:30 AM 85°
EVE
3:00 PM 70° 3:00 PM 75°
NIGHT
11:00 PM 65° 11:00 PM 80°
MORN
6:00 AM 70° 6:00 AM 75°
DAY
6:15 AM 70° 6:15 AM 75°
EVE
3:00 PM 70° 3:00 PM 75°
NIGHT
11:00 PM 65° 11:00 PM 80°
C H A R T
COOL
TEMP .
TIME
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