1. Impurtante Information Safety
Read all instructions thoroughly before installing and operating this appliance. Keep this manual for future reference. Your safety and the safety of others are very important. Follow all safety messages outlined in this manual.
- Requisiti elettrici: Questa unità richiede un alimentatore speciale di 230 volt/20-amp electrical outlet. Ensure proper grounding and use a dedicated circuit.
- Installazione: Installation must be performed in accordance with national electrical codes by qualified personnel only. Do not attempt to install the unit yourself if you are not qualified.
- Operating Temperature for Heat Mode: The supplemental heating mode is designed to operate when outside temperatures are between 23°F and 76°F (-5°C and 24°C). It is not intended as a primary heat source during colder months.
- I zitelli è l'animali: Mantene i zitelli è l'animali domestici luntanu da l'unità durante u funziunamentu.
- Mantenimentu: Scollegate sempre l'unità prima di pulisce o di fà qualsiasi manutenzione.
2. Produttu Finituview
The Keystone KSTAT12-2HD is a versatile 12,000 BTU wall-mounted air conditioner designed to provide comfort in rooms up to 550 square feet. This unit offers 4-in-1 functionality, including powerful cooling, supplemental heating, dehumidification, and fan-only operation.

Image: Front view of the Keystone 12,000 BTU Wall Mounted Air Conditioner, showing the control panel and air vents.
Its through-the-wall design saves window space and allows for more natural light. The unit features a smart remote control with a built-in thermostat for precise temperature management and energy-saving modes like 'Energy Saver' and 'Sleep' mode, along with a programmable 24-hour timer.

Image: A graphic highlighting the unit's 4-in-1 technology: Powerful Cooling (12,000 BTU - 550 Sq. Ft.), Supplemental Heating (10,600 BTU), Air Flow (3 Fan Speeds), and Dehumidification (2.5 Pints Per Hour).

Image: The Keystone air conditioner installed in a contemporary office environment, demonstrating its integration into a living or working space.
3. Cuntenutu di u pacchettu
Verificate chì tutti l'articuli elencati quì sottu sò inclusi in u vostru pacchettu:
- Unità di climatizazione murale Keystone
- Control remoto
- 2 batterie AAA (per u telecomandu)
- Filtru à maglia (preinstallatu)
- Kit di Trim
- Manuale d'istruzzioni (stu documentu)
- Infurmazioni di Garanzia
4. Installazione
This unit is designed for through-the-wall installation. A universal wall sleeve (24.5"-27") is required and sold separately. A trim kit is included for a finished appearance.
- Cunnessione elettrica: The unit requires a NEMA 6-20P plug and a special 230V/20AMP electrical outlet. Ensure the outlet is properly installed and grounded. The cable length is 6.5 ft. LCDI.
- Manica murale: Install the wall sleeve securely according to its manufacturer's instructions.
- Unità di piazzamentu: Carefully slide the air conditioner unit into the installed wall sleeve.
- Kit di trim: Attach the included trim kit around the unit for a neat and finished look.

Image: A graphic illustrating the easy installation process into a universal wall sleeve and the benefit of freeing up window space for natural light.

Image: A graphic showing the required NEMA 6-20P plug type for a 230V/20AMP outlet and the 6.5 ft LCDI cable length.
5. Operating Instructions
Familiarize yourself with the control panel on the unit and the remote control for optimal use.
5.1. Control Remote
The remote control features a built-in thermostat that senses the room temperature at its location. It displays this temperature on its LCD screen and sends a signal to the AC unit every 3 minutes, ensuring accurate and precise cooling or heating based on your preferred temperature.

Image: A person comfortably operating the wall-mounted air conditioner using the remote control from a sofa.

Image: A graphic emphasizing the convenience of the built-in remote thermostat, allowing control from anywhere in the room.
5.2. Modi upirativu
- Modu di raffreddamentu: Provides 12,000 BTU of cooling capacity, suitable for rooms up to 550 square feet. Adjust the temperature setting to your desired comfort level.
- Supplemental Heating Mode: Offers 10,600 BTU of supplemental heating capacity. This mode is intended to assist your primary heating system and should be used when outside temperatures are between 23°F and 76°F.
- Modu di deumidificatore: Removes up to 2.5 pints of moisture per hour from the air, helping to reduce humidity and improve comfort.
- Modu Fan: Circulates air without cooling or heating. Choose from 3 fan speeds to suit your preference.
5.3. Funzioni di risparmiu energeticu
Utilize these features to optimize energy consumption and reduce operating costs:
- Modu Risparmiu Energeticu: The fan will cycle on and off with the compressor to conserve energy once the set temperature is reached.
- Modu Sleep: Gradually increases the room temperature over several hours to save energy while you sleep, maintaining comfort.
- Timer di 24 ore: Prugrammate l'unità per accende si o spegne automaticamente à momenti specifici in un periodu di 24 ore.

Image: A visual representation of the energy-efficient Sleep Mode, which adjusts temperature for energy savings during sleep.
6. Mantenimentu
Una manutenzione regulare assicura prestazioni ottimali è allunga a durata di vita di u vostru climatizzatore.
6.1. Pulizia di u filtru di l'aria
The unit is equipped with a 'Check Filter' alert that indicates when it's time to clean the mesh filter. A clean filter is crucial for efficient operation and cleaner air circulation.
- Spegnimentu: Always unplug the air conditioner before removing the filter.
- Eliminà u filtru: Carefully remove the mesh filter from its designated slot.
- Pulite u filtru: Wash the filter with warm, soapy water. Rinse thoroughly. For heavily soiled filters, a vacuum cleaner can be used to remove loose dust before washing.
- Filtru seccu: Allow the filter to air dry completely before reinserting it. Do not use heat to dry.
- Reinstallà u filtru: Place the dry filter back into the unit.

Imagine: Un primu pianu view of the washable, removable mesh filter being cleaned under running water.
6.2. Pulizia generale
Asciugà l'esterno di l'unità cun un soffiu, damp tela. Ùn aduprate micca chimichi duri o detergenti abrasivi.
7. Risoluzione di prublemi
If you encounter issues with your air conditioner, refer to the following common problems and solutions. For more detailed troubleshooting, consult the comprehensive manual provided with your unit or contact customer support.
- L'unità ùn si accende micca: Check if the unit is properly plugged into a 230V/20A outlet. Verify the circuit breaker has not tripped. Ensure the remote control batteries are not depleted.
- Raffreddamentu/riscaldamentu insufficiente: Check if the air filter is clean. Ensure no obstructions are blocking the air intake or exhaust. Verify the temperature setting is appropriate for the desired mode. Ensure windows and doors are closed.
- rumori inusuali: Some operational sounds are normal (e.g., fan, compressor starting/stopping). If you hear loud or unusual noises, unplug the unit and contact customer support.
- Fuga d'acqua: Ensure the unit is installed with a slight tilt to allow proper drainage. Check for any blockages in the drain pan or hose.
8. Specificazioni
Detailed technical specifications for the Keystone KSTAT12-2HD air conditioner.

Image: A diagram illustrating the physical dimensions (24.2" W x 14.5" H x 20.3" D) and weight (78.3 lbs) of the air conditioner unit.
| Feature | Detail |
|---|---|
| Numero di mudellu | KSTAT12-2HD |
| Capacità di rinfrescamentu | 12,000 BTU |
| Capacità di Riscaldamentu Supplementare | 10,600 BTU |
| Zona di copertura | Finu à 550 sq. |
| Capacità di Deumidificazione | 2.5 Pinte / Ora |
| Voltage | 230 Volts |
| Wattage | 1220 watts |
| Fonte d'energia | Corded Electric |
| Tipu di Plug | NEMA 6-20P |
| Lunghezza di u cable | 6.5 ft. LCDI |
| Dimensioni (L x H x P) | 24.2 x 14.5 x 20.3 inch |
| Pesu di l'articulu | 78.3 liri |
| Livellu di sonu | 61.3 Decibel |
| Rapportu di Efficienza Energetica Stagionale (SEER) | 9.5 |
| Culore | Bright White |
| Materiale | Plastica |
| Metudu di stallazione | Wall (Through-the-Wall) |
| Funzioni spiciali | Deumidificatore, Raffreddamentu Rapidu, Ricordu di Luce di Filtru, Funzione di Riscaldamentu è Raffreddamentu, Telecomandu |

Image: A room size guide indicating that a 12,000 BTU unit is suitable for areas up to 550 square feet.
9. Garanzia è Support
Your Keystone KSTAT12-2HD air conditioner comes with a comprehensive warranty:
- Pezzi è manodopera di 1 anni: Copre i difetti di materiali è di fabricazione per un annu da a data di compra.
- Additional 4 Years for Sealed System: An extended warranty covers the sealed refrigeration system components for an additional four years (total of five years).
For warranty claims, technical assistance, or further support, please refer to the contact information provided in the warranty document included with your product or visit the official Keystone websitu.





