Lux PSPH521 - Manual

1

© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED

•

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.

LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054, USA

43343-04

I M P O R T A N T !

Thank you for your confidence in our product. To obtain the best results from
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.

READ

INSTALLATION

INSTRUCTIONS

FIRST

C

A

U

T

I

O

N

• 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.

PSPH521 SERIES

PROGRAMMABLE HEAT PUMP THERMOSTAT

Complete, Easy To Read Programming And Installation Instructions Inside

MORN

DAY

EVE

NIGHT

DOWN

UP

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

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.

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.

• Press UP/DOWN to set time.

TO SET TIME & DAY

• Rotate Dial to SET WEEKDAY

or WEEKEND PROGRAM

• Press UP to change

current day.

• Press NEXT.

Rotate the dial to the RUN position to close the door.

The Active Program Period

Liquid Crystal
Display

Fan
Switch

System
Switch

Easy to
follow
instructions

LUX Speed Dial

®

Thermostat
Body

The Set
Temperature

Thermostat
Cover

HEAT

OFF

COOL

AUTO

ON

FAN

RESET

HOLD

NEXT

RUN

FILTER

SET

SUNDAY
PROGRAM

SET

SATURDAY
PROGRAM

SET

WEEKDAY
PROGRAM

SET

DAY/TIME

DOWN

UP

1500

P a t e n t s P e n d i n g

MO

DAY

HEAT

PM

SIMPLIFIED INSTRUCTIONS

• Press UP/DOWN to set time.

TO SET PROGRAMS

• Rotate Dial to SET

WEEKDAY

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

TO SET TIME & DAY

• Rotate Dial to SET

DAY/TIME.

• Press UP to change

rr

t d

HEAT

OFF

COOL

AUTO

ON

FAN

RESET

HOLD

NEXT

RUN

FILTER

SET

SUNDAY
PROGRAM

SET

SATURDAY
PROGRAM

SET

WEEKDAY
PROGRAM

SET

DAY/TIME

DOWN

UP

1500

P a t e n t s P e n d i n g

MO

DAY

HEAT

PM

SIMPLIFIED INSTRUCTIONS

• Press UP/DOWN to set time.

TO SET PROGRAMS

• Rotate Dial to SET

TEMPORARY TEMPERATURE OVERRIDE

•Press UP/DOWN to adjust set temperature.
•To clear OVERRIDE press UP/DOWN until

original set temperature appears or wait for

TO SET TIME & DAY

• Rotate Dial to SET

DAY/TIME.

• Press UP to change

DOWN

UP

MO

DAY

HEAT

PM

Choose Heat or Cool

Set Day & Time

Installs Easily

Easy as

1–2–3

INSTALLATION AND OPERATING INSTRUCTIONS

FEATURES

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.

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.

6. Do not install the unit until all construction work and painting has been completed.
7. This thermostat does not require leveling.

C A U T I O N

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.

OFF

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.

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.

C A U T I O N

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.

N O T E

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.

C

A

U

T

I

O

N

Be careful not to drop the body or disturb electronic parts.

Leave the cover closed while the body is being removed from the base.

E

G

Y

R

O W2 B

C

TERMINALS

SCREW ANCHORS

BASE

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.