Complete, Easy To Read

INSTALLATION AND OPERATING INSTRUCTIONS

PSDH121 SERIES

DIGITAL ELECTRONIC HEAT PUMP THERMOSTAT

Easy as

1–2–3

Installs EasilyChoose Heat or Cool Set Temperature

LUX PRODUCTS CORPORATION • Mt. Laurel, New Jersey 08054, USA 43368

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.

I M P O R T A N T !

Please read all instructions carefully before

beginning installation and save for future reference.

Before removing any wiring from your existing thermostat, its wires

must be labeled with their terminal designations.

Ignore the color of the wires since they may not comply with any standard.

Thank you for your confidence in our product. To obtain the best results from your investment, please read this manual 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.

OPERATING INSTRUCTIONS

●In the winter, set the system switch to HEAT to control your system while heating.

●In the summer, set the switch to COOL to control your system while cooling.

●Press the TEMPERATURE UP or DOWN key in order to show the current SET TEMPERATURE.

●Press TEMPERATURE UP or DOWN keys again until your desired temperature is displayed. The display will show the current room temperature again after two seconds.

●Press the light bulb button to illuminate the display. Adjusting the temperature will keep the display lit until no button has been pressed for over ten seconds.

●In spring and fall or when windows are open, you can set the system switch to 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.

●Setting the Mode switch to EMER (emergency heat) runs your Emergency heating system rather than the heat pump.

N O T E

The FAN switch works only if your system provides a wire for a thermostat’s “G” terminal.

INSTALLATION

Please read all instructions carefully before beginning installation.

C A U T I O N

COMPATIBILITY

TEMP UP

LUX PSDH121 was designed for use with single stage heat pump systems with auxiliary and/or emergency heat. These systems are typical known as

2-stage heat one stage cool heat pump systems.

TEMP DOWN

MODE

FAN

MODE

BACKLIGHT

RESET

*** 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 systems. The thermostat should be limited to a maximum of 1.5 amps; higher current may cause damage to the thermostat. If you are in doubt, call your HVAC contractor.

●Your thermostat is a precision instrument. Please handle it with care.

TOOLS REQUIRED

FEATURES

●Slim design may be vertically or horizontally

mounted

● Large easy to read backlit display

● Fan switch for system or continuous fan operation

● Emergency Heat Switch

● Simple temperature Up or Down keys will display and adjust the Set Temperature.

● Temperature displays in F° or C°

●Temperature differential SWING settings of 0.25 and 0.5

●Selectable 2 or 5-Minute Minimum Run/Off time provides short cycle and compressor protection

●#1 Phillips screwdriver (small)

●Drill with 3/16-in. (4.8mm) bit

●Wire stripper/cutter

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.

●Remember that your PSDH121 may be mounted vertically or horizontally when determining the optimal location.

●Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor, and in a room that is used often.

●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.

●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.

●Do not locate in a damp area. This can lead to corrosion that will shorten thermostat life.

●Do not locate where air circulation is poor, such as: in a corner or an alcove; or behind an open door.

●Do not install the unit until all construction work and painting has been completed.

© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED

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Lux Products PSDH121 warranty Operating Instructions, Installation, Compatibility, Features
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PSDH121 specifications

Lux Products is renowned for its innovative heating and cooling solutions, and the PSDH121 model stands out as an energy-efficient programmable thermostat designed for modern households. The PSDH121 is a programmable thermostat that boasts an array of features aimed at enhancing user comfort while promoting energy savings.

One of the key characteristics of the PSDH121 is its intuitive interface. The large, easy-to-read digital display makes navigation simple, allowing users to adjust settings with minimal effort. The thermostat is designed to be user-friendly, with straightforward programming options that cater to daily schedules. Users can set different temperatures for different times of the day or week, ultimately providing customized comfort tailored to individual lifestyles.

Energy efficiency is a hallmark of the PSDH121. This model is equipped with advanced programming capabilities that help to reduce energy consumption. By automatically adjusting the temperature based on user-defined schedules, the PSDH121 minimizes energy usage during periods when heating or cooling is not needed. This feature not only lowers energy bills but also promotes a more sustainable living environment.

In terms of technology, the PSDH121 utilizes a 7-day programming capability, allowing users to create unique temperature settings for each day of the week. This flexibility accommodates varying schedules, ensuring comfort when it is needed most. Additionally, the thermostat includes a vacation mode, allowing users to override the usual settings while they are away, further enhancing energy conservation.

The PSDH121 is compatible with a wide range of heating and cooling systems, making it versatile for various home setups. Whether for gas, electric, or heat pump systems, this thermostat integrates seamlessly, providing reliable performance across different climates and conditions.

Moreover, the PSDH121 features adaptive learning technology, which allows it to learn a user’s preferences over time. This feature optimizes energy efficiency by gradually adjusting its programming based on the data collected from user habits, ensuring consistent comfort with minimal manual input.

With its blend of user-friendly design, advanced programming capabilities, and energy-saving technologies, the Lux Products PSDH121 programmable thermostat is an excellent choice for anyone looking to enhance their home comfort while reducing energy costs. Its commitment to innovation and efficiency makes it a top contender in the smart thermostat market.
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