1. Okwu mmalite
This manual provides comprehensive instructions for the installation, operation, and maintenance of your LUX Pro PSD111B Non-Programmable Thermostat. This device is designed for residential use to control 1 Heat, 1 Cool HVAC systems, offering reliable and straightforward temperature management.

Figure 1: LUX Pro PSD111B Thermostat Front View
2. Atụmatụ igodo
- Nwụnye ọtụtụ: Can be installed in either horizontal or vertical orientation.
- Kpochapụ ihe ngosi: Nwere ihe dị mfe ime -view backlit display for enhanced readability.
- Arụ ọrụ batrị: Operates on 2 included AA alkaline batteries, ensuring reliable power.
- Nkeji okpomọkụ: Choose between Fahrenheit or Celsius temperature display options.
- Njikwa ziri ezi: Adjustable temperature swing settings with 9-step control for accurate temperature management.
- Safety Limits: Offers adjustable high and low temperature limits for customized comfort control.

Figure 2: Product Features Overview
3. Usoro ndakọrịta
The LUX Pro PSD111B thermostat is designed for use with most 24-volt gas, oil, or electric heating and air conditioning systems, gas millivolt heating systems, and single-stage heat pumps. It is not compatible with 120-volt heating systems or two-stage okpomọkụ nfuli.
Compatible Systems (24V)
- Gas/Oil/Electric Furnace - Heating only
- Gas/Oil/Electric Furnace - Single Stage
- Mgbapụta ọkụ na-enweghị ọkụ inyeaka
- 2-wire Hydronic (Hot Water)
- 750 Millivolt
- Gas Fireplaces (24V)
- Naanị oyi
- Naanị otutage jụrụ ajụ
Ekwekọrịtaghị na
- Heat Pump Multistage
- Okpomọkụ Elu Ụlọ Na-egbuke egbuke
- Electric Baseboards
- Mgbapụta ọkụ na ọkụ inyeaka
- Portable space heaters
- 3-wire Hydronic (Hot Water)
- Gas/Oil/Electric Furnace - Multistage
- Cool Multistage
- Plug-in air conditioners

Figure 3: System Compatibility Chart
4. Kedu ihe dị na Igbe ahụ
Your LUX Pro PSD111B Non-Programmable Thermostat package includes the following items:
- PSD111B Thermostat Unit
- 2 ST screws
- 2 arịlịka mgbidi
- akara waya
- Akwụkwọ ntuziaka
- 2 AA alkaline batrị

Onyonyo 4: Akụrụngwa gụnyere
5. Ntọala na nwụnye
Before beginning installation, ensure the power to your HVAC system is turned off at the circuit breaker to prevent electrical shock or damage to the system.
5.1 Ịkwanye Thermostat
- Carefully remove your old thermostat. Take a photo of the existing wiring connections for reference.
- Mount the new thermostat base plate to the wall using the provided screws and anchors. The thermostat can be installed in either horizontal or vertical orientation.
- Feed wires through the back of the thermostat base and securely mount to the wall with supplied screws and anchors.

Onyonyo 5: Nhọrọ Nkwanye
5.2 Ntuziaka waya
Refer to the wiring diagrams below for typical hookups. Use the provided wire labels to correctly identify and connect wires from your HVAC system to the corresponding terminals on the thermostat base.

Figure 6: Typical Wiring Diagrams

Figure 7: Detailed Wiring Hookups
5.3 Gas/Electric System Selection
Locate the small switch inside the thermostat unit. Slide the switch to the 'GAS' position for gas heating systems or 'ELEC' for electric heating systems (including heat pumps).
5.4 Ntinye batrị
Insert the two AA alkaline batteries into the battery compartment located at the bottom of the thermostat. Ensure correct polarity. Remove any protective tabs if present.
5.5 Mgbakọ ikpeazụ
Once wiring and settings are complete, carefully snap the thermostat front cover onto the mounted base plate. Restore power to your HVAC system at the circuit breaker.
Video 1: Installation and Wiring Overview for LuxPro Thermostat
6. Ntuziaka ọrụ
The PSD111B is a non-programmable thermostat, offering simple manual control over your home's temperature.
6.1 Ịgbanwe Okpomọkụ
Use the UP (▲) and DOWN (▼) arrow buttons on the front of the thermostat to set your desired temperature. The display will show the current room temperature and your set temperature.

Figure 8: Simple and Intuitive Control Panel
6.2 Nhọrọ Ụdị Sistemụ
Use the SYSTEM switch located on the side of the thermostat to select the operating mode:
- Ọkụ: Activates the heating system when the room temperature falls below your set temperature.
- Gbanyụọ: Na-agbanyụ ma kpo oku na oyi usoro.
- Oyi: Activates the cooling system when the room temperature rises above your set temperature.
6.3 Fan Mode Selection
Use the FAN switch located on the side of the thermostat to select the fan operation mode:
- UTgbọala: Fan ahụ na-agba naanị mgbe sistemụ kpo oku ma ọ bụ oyi na-arụ ọrụ nke ọma.
- NA: Onye ofufe na-agba ọsọ na-aga n'ihu, n'agbanyeghị ma usoro kpo oku ma ọ bụ oyi na-arụ ọrụ.
7. Nlekọta
7.1 nnọchi batrị
When the battery indicator appears on the display, replace the two AA alkaline batteries promptly. Open the battery compartment at the bottom of the thermostat, remove old batteries, and insert new ones, ensuring correct polarity. The thermostat retains settings during battery changes.
7.2 Nhicha
Jiri ihe dị nro hichaa mpụta thermostat ahụ.amp akwa . Ejila ihe nchacha abrasive ma ọ bụ ihe mgbaze.
8. Nchọpụta nsogbu
If your thermostat is not functioning as expected, consider the following:
- Enweghị Ngosipụta: Lelee ma arụnyere batrị nke ọma ma nwee ụgwọ zuru oke. Dochie ma ọ dị mkpa.
- Sistemụ Anaghị azaghachi: Ensure the SYSTEM switch is set to HEAT or COOL, not OFF. Verify the fan switch is in the desired position (AUTO or ON). Check your circuit breaker for the HVAC system.
- Ọgụgụ Okpomọkụ Na-ezighi Ezi: Allow the thermostat to acclimate to the room temperature for at least 15 minutes after installation or significant temperature changes.
- Heating/Cooling Cycles Too Frequently/Infrequently: Adjust the temperature swing settings (9-step control) to fine-tune the cycle frequency.
9. Nkọwapụta
| Nkọwapụta | Nkọwa |
|---|---|
| Ụdị | LUX |
| Aha Nlereanya | PSD111B-010 |
| Akụkụ ngwaahịa | 1"D x 3.5"W x 4.7"H |
| Ụdị njikwa | Pịa bọtịnụ |
| Njirimara Pụrụ Iche | Vol dị alatage |
| Agba | Ọcha |
| Ihe eji eme ihe maka ngwaahịa | Air Conditioner, Heat Pump |
| Ụdị njikwa okpomọkụ | Akwụkwọ ntuziaka |
| Ngwa gụnyere | PSD111B-010 Mechanical Non-Programmable Thermostat |
| Isi Iyi Ike | AC/DC (2 AA batteries required) |
| Ibu Ibu | 6.4 ounces |
| Voltage | 24 volts |
| Ihe onwunwe | Plastic |
| Ụdị ngosi | LCD |
| Ụdị nkwụnye | Ugwu mgbidi |
10. Akwụkwọ ikike na nkwado
The LUX Pro PSD111B Non-Programmable Thermostat comes with a 5-year limited warranty. For support or warranty claims, please refer to the contact information provided in your owner's manual or visit the official LUX websaịtị.





