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2© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED
CAUTION
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.
SET
WEEKDAY
PROGRAM
HOLD
RESET
NEXT
SET
DAYTIME
SET
WEEKEND
PROGRAM
RUN
EMER
HEAT
OFF
COOL
FAN
AUTO
ON
SIMPLIFIED INSTRUCTIONS
TO SET PROGRAMS
• Rotate Dial to SET
TEMPORARY TEMPERATURE OVERRIDE
•Press UP/DOWN to adj st set temperat re
TO SET TIME & DAY
• Rotate Dial to SET WEEKDAY
INSTALLING BATTERIES
The Unit requires batteries to
retain its programming in
memory. Replace the batteries
when the REPLACE indicator
appears in the display or at
least once a year.
GE YRO W2 B C
COMPRESSOR
RELAY
FAN
RELAY
EMERGENCY
HEAT RELAY
HEAT
CHANGEOVER
VALVE
COOL
CHANGEOVER
VALVE
AUX HEAT
RELAY
COMMON
1
1
L1
(HOT)
L2
(COMMON)
POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
OLD TERMINAL
DESIGNATIONS
TYPICAL
CONNECTION
NEW THERMOSTAT
TERMINAL
DESIGNATIONS
B
C, X, X1, X2, Z
E, K
G, F
L, A, A1
0
R, V
W2, H2, R4, W3, Y
Y, C1, M, Y1
B
C
E
G
TAPE OFF
0
R
W2
Y
Heating Changeover Valve
Common
Emergency Heat Relay
Fan Relay
Check Heat Pump Indicator
Cooling Changeover Valve
24V System or Heating
Transformer
Stage 2 Heating Relay or
Auxiliary Heat Relay
Stage 1 Compressor
Contractor
TERMINAL DESIGNATIONS
TYPICAL HOOKUP
SETTING THE FAN AND SYSTEM SWITCHES
FAN ON
FAN AUTO
EMER
HEAT
OFF
COOL
The fan runs continuously for increased air circulation.
Normal Setting. Fan is energized with the system.
Auxiliary heat is used for heating. The compressor is deenergized.
The thermostat controls your heating.
Both heating and cooling are off.
The thermostat controls your cooling.
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.
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
you are done, press RETURN.
You can use the built-in programs as
shown, or change them as you wish.
Each day is divided into four periods.
Each period has its own starting time
and temperature.
THE BUILT IN PROGRAMS
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
conditioner. 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.
OPERATION
This thermostat is “armchair programmable”
You can make any program or setting
changes with the thermostat body off or on
the wall thermostat base.
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 Energizer
®
or DURACELL
®
"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.
CAUTION
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.
NOTE
When replacing batteries, you have
approximately 1 minute before programs are lost.
PROGRAMMING CHART
REPLACE BATTERIES WHEN
INDICATOR APPEARS
DAY
MONDAY
THROUGH
FRIDAY
PERIOD HEAT
TEMP.
MORN
DAY
EVE
NIGHT
SATURDAY
AND
SUNDAY
MORN
DAY
EVE
NIGHT
TEMP.TIME TIME
COOL
PERIOD HEAT COOL
WEEKDAYS
MORN 6:00 AM 70° 6:00 AM 78°
preprograms DAY 8:00 AM 62° 8:00 AM 85°
EVE 6:00 PM 70° 6:00 PM 78°
NIGHT 10:00 PM 62° 10:00 PM 82°
MORN 6:00 AM 70° 6:00 AM 78°
SAT & SUN DAY 8:00 AM 62° 8:00 AM 85°
preprograms EVE 6:00 PM 70° 6:00 PM 78°
NIGHT 10:00 PM 62° 10:00 PM 82°
WARNING: Use Energizer
®
or DURACELL
®
Alkaline Batteries Only.