INSTALLATION AND OPERATING INSTRUCTIONS
EGYROW2BC
TERMINALS
SCREW ANCHORS
BASE
PSPH521 SERIES
PROGRAMMABLE
UP
O
M
Y
A
D
T
A
E
H
M
P
DOWN
Installs Easily
Complete, Easy To Read Programming And Installation Instructions Inside
LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054, USA 43343-04
WARNING: Use Energizer®or DURACELL®Alkaline Batteries Only.
Energizer®is a registered trademark of Eveready Battery Company, Inc.
DURACELL®is a registered trademark of The Gillette Company, Inc.
IMPORTANT!
Thank you for your confidence in our product. To obtain the best results from
READ
INSTALLATION
INSTRUCTIONS
FIRST
FEATURES
•
The Unit can be
used with most
two stage heat
and one stage
cool heat pump
systems. It cannot be
used with 120 volt
heating systems. Ask your
dealer for other LUX
thermostats to control those
systems.
• The Unit is programmable.
There are four programming
periods per day. Each period
can be programmed
separately.
• You can use the built-in
time/temperature
programs, or alter them to
suit your schedule. The Unit
provides separate programs
for weekdays and weekends
- for both heating and
cooling. You can override the
programmed temperatures
for as little as one programming period or for an entire vacation.
• In cool weather, when the system switch is set to HEAT, the Unit will maintain cooler “set back”
room temperatures to save energy. It will then change to warmer “comfort” settings — all
automatically, at specified times during the day.
• In warm weather, when the system switch is set to COOL, the Unit will maintain warmer “set
back” room temperatures to save energy. It will then change to cooler “comfort” settings - all
automatically, at specified times during the day.
• A large liquid crystal display shows time, day of the week, and room and set temperatures.
It will remind you when the filter should be changed in your blower and track your system’s
energy usage.
• Temperature swing adjustment lets you fine-tune your system for maximum comfort and
economy.
• A 4-minute minimum on/off time in COOL prevents your air conditioning system from being
damaged.
• The thermostat can be powered either by a common wire from the 24Vac transformer with
two Energizer®or DURACELL®"AA" size alkaline batteries as backup or exclusively by two
Energizer®or DURACELL®"AA" size alkaline batteries.
CAUTION
• Your thermostat is a precision instrument. Please handle it with care.
• Turn off electricity to the appliance before installing or servicing thermostat or any part
of the system. Do not turn electricity back on until work is completed.
• Do not short (jumper) across electric terminals at control on furnace or air conditioner
to test the system. This will damage the thermostat and void your warranty.
• All wiring must conform to local codes and ordinances.
• This thermostat is designed for use with 24 volt and millivolt systems. The thermostat
should be limited to a maximum of 1.0 amps; higher amperage may cause damage
to the thermostat. If you are in doubt, call your utility company.
your investment, please read these instructions and acquaint yourself with
your purchase before installing your new thermostat. Then follow the
installation procedures, one step at a time. This will save you time and
minimize the chance of damaging the thermostat and the systems it controls.
These instructions may contain information beyond that required for your
particular installation. Please save for future reference.
LUX Speed Dial
HEAT PUMP THERMOSTAT
UP
O
HEAT
OFF
COOL
1500
Patents Pending
original set temperature appears or wait for
TO SET TIME & DAY
•Rotate Dial to SET WEEKDAY
or WEEKEND PROGRAM
•Press UP to change
current day.
•Press NEXT.
•Press UP/DOWN to set time.
Rotate the dial to the RUN position to close the door.
M
Y
A
D
T
A
E
H
M
P
DOWN
SET
SET
SUNDAY
SATURDAY
RESET
FAN
PROGRAM
PROGRAM
HEAT
AUTO
SET
OFF
FILTER
WEEKDAY
HOLD
ON
COOL
PROGRAM
SET
RUN
NEXT
DAY/TIME
Patents Pending
SIMPLIFIED INSTRUCTIONS
•Press UP/DOWN to set time.
TEMPORARY TEMPERATURE OVERRIDE
TO SET TIME & DAY
•Press UP/DOWN to adjust set temperature.
•Rotate Dial to SET
TO SET PROGRAMS
•To clear OVERRIDE press UP/DOWN until
DAY/TIME.
•Rotate Dial to SET
original set temperature appears or wait for
•Press UP to change
Choose Heat or CoolSet Day & Time
Liquid Crystal
Display
UP
DOWN
RESET
SET
WEEKEND
PROGRAM
HOLD
RUN
NEXT
SIMPLIFIED INSTRUCTIONS
TO SET PROGRAMS
•Rotate Dial to SET
WEEKDAY,
SATURDAY or
SUNDAY PROGRAM.
•Press UP/DOWN to adjust
start time.
•Press NEXT.
•Press UP/DOWN to adjust
temperature.
•Press NEXT.
•Repeat as needed or rotate
dial to RUN to stop
Programming.
Easy as
1500
TEMPORARY TEMPERATURE OVERRIDE
•Press UP/DOWN to adjust set temperature.
•To clear OVERRIDE press UP/DOWN until
original set temperature appears or wait for
the start tf the next period.
TEMPERATURE HOLD
•Press HOLD. Adjust temperature as
desired with UP/DOWN.
•To clear, press HOLD again.
1–2–3
FAN
EMER
AUTO
HEAT
OFF
ON
COOL
UP
O
M
Y
A
D
T
A
E
H
M
P
DOWN
SET
SET
SUNDAY
SATURDAY
RESET
FAN
PROGRAM
PROGRAM
AUTO
SET
FILTER
WEEKDAY
HOLD
ON
PROGRAM
SET
RUN
NEXT
DAY/TIME
SIMPLIFIED INSTRUCTIONS
•Press UP/DOWN to set time.
TEMPORARY TEMPERATURE OVERRIDE
TO SET TIME & DAY
•Press UP/DOWN to adjust set temperature.
•Rotate Dial to SET
•To clear OVERRIDE press UP/DOWN until
TO SET PROGRAMS
DAY/TIME.
•Rotate Dial to SET
•Press UP to change
The Active Program Period
®
MORN
DAY
EVE
NIGHT
SET
WEEKDAY
PROGRAM
SET
DAYTIME
The Set
Temperature
Thermostat
Body
System
Switch
Fan
Switch
Easy to
follow
instructions
Thermostat
Cover
INSTALLATION
Please read all instructions carefully
before beginning installation.
TOOLS REQUIRED
#1 Phillips screwdriver (small)
Drill with 3/16-in. (4.8mm) bit
THERMOSTAT LOCATION
On replacement installations, mount the
new thermostat in place of the old one unless the conditions listed below suggest otherwise. On new
installations, follow the guidelines listed below.
1. Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor, and in a room that is
used often.
2. Do not install it where there are unusual heating conditions, such as: in direct
sunlight; near a lamp, radio, television, radiator, register, or fireplace; near hot water pipes in a wall;
near a stove on the other side of a wall.
3. Do not locate in unusual cooling conditions, such as: on a wall separating an unheated room; or in
a draft from a stairwell, door, or window.
4. Do not locate in a damp area. This can lead to corrosion that will shorten
thermostat life.
5. Do not locate where air circulation is poor, such as: in a corner or an alcove; or behind an open
door.
CAUTION
To avoid electrical shock and
to prevent damage to the
furnace, air conditioner, and
thermostat, disconnect the power
supply before beginning work. This
can be done at the fuse box, at the
circuit breaker, or at the appliance.
6. Do not install the unit until all construction work and painting has been completed.
7. This thermostat does not require leveling.
REMOVING THE OLD THERMOSTAT
Switch electricity to the furnace and air conditioner OFF; then
proceed with the following steps.
1. Remove cover from old thermostat. Most are snap-on types
and simply pull off. Some have locking screws on the side.
These must be loosened.
2. Note the letters printed near the terminals. Attach labels
(enclosed) to each wire for identification. Remove and label
wires one at a time. Make sure the wires do not fall back inside
the wall.
3. Loosen all screws on the old thermostat and remove it from the
wall.
CAUTION
Read instructions carefully
before removing any
wiring from existing
thermostat. Wires must be
labeled before they are
removed. When removing
wires from their terminals,
ignore the color of the
wires since these may not
comply with the standard.
MOUNTING THE UNIT ON THE WALL
1. Strip insulation 3/8 in. (9.5mm) from wire ends and clean off any corrosion.
2. Fill wall opening with non-combustible insulation to prevent
drafts from affecting the thermostat.
3. Press up on the button on bottom of thermostat and swing the
body away from the base and up to remove the body from the
base.
CAUTION
Be careful not to drop the body or disturb electronic parts.
Leave the cover closed while the body is being removed from the base.
NOTE
If you are mounting the base to
a soft material like plasterboard
or if you are using the old
mounting holes, the screws
may not hold. Drill a 3/16-in.
(4.8mm) hole at each screw
location, and insert the plastic
anchors provided. Then mount
the base as described below.
Attaching Wires
4. Hold the base against the wall, with the wires coming through wherever
it is convenient for wiring. Route the wires to below the terminal block.
Position the base for best appearance (to hide any marks from an old
thermostat). Attach the base to the wall with the two screws provided.
1© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED
CAUTION
SET
WEEKDAY
PROGRAM
HOLD
RESET
NEXT
SET
DAYTIME
SET
WEEKEND
PROGRAM
RUN
EMER
HEAT
OFF
COOL
FAN
AUTO
ON
SIMPLIFIED INSTRUCTIONS
TO SET PROGRAMS
TEMPORARY TEMPERATURE OVERRIDE
TO SET TIME & DAY
GE YRO W2 B C
COMPRESSOR
RELAY
FAN
RELAY
EMERGENCY
HEAT RELAY
HEAT
CHANGEOVER
VALV E
COOL
CHANGEOVER
VALV E
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
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.
DAY
MONDAY
THROUGH
FRIDAY
PERIOD HEAT
TEMP.
MORN
DAY
EVE
NIGHT
SATURDAY
AND
SUNDAY
MORN
DAY
EVE
NIGHT
TEMP.TIME TIME
COOL
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
NOTE
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 Energizer®or DURACELL®"AA" size
alkaline batteries in the battery clip. Observe the
polarity marking shown in the clip.
WARNING: Use Energizer®or DURACELL
®
Alkaline Batteries Only.
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.
REPLACE BATTERIES WHEN
INDICATOR APPEARS
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: 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
SETTING THE FAN AND SYSTEM SWITCHES
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
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.
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
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.
This thermostat is “armchair programmable”
You can make any program or setting
changes with the thermostat body off or on
the wall thermostat base.
PERIOD HEAT COOL
WEEKDAYS
preprograms DAY 8:00 AM 62° 8:00 AM 85°
SAT & SUN DAY 8:00 AM 62° 8:00 AM 85°
preprograms EVE 6:00 PM 70° 6:00 PM 78°
MORN 6:00 AM 70° 6:00 AM 78°
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°
NIGHT 10:00 PM 62° 10:00 PM 82°
PROGRAMMING CHART
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.
2© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED