1. Sarrera
Thank you for choosing the Keystone 23,200 BTU Window-Wall Air Conditioner with Supplemental Heat and Dehumidifier. This manual provides essential information for the safe and efficient operation of your appliance. Please read it thoroughly before installation and use, and retain it for future reference.
2. Segurtasun informazioa
Segurtasun-argibide garrantzitsuak:
- This appliance requires a special 230-volt/25-amp electrical outlet (NEMA 6-30P plug). Do not use with a standard 115V household outlet. Consult a qualified electrician if you are unsure about your electrical supply.
- Deskonektatu beti korrontea unitatea garbitu edo konpondu aurretik.
- Ez erabili unitatea korronte-kablea edo entxufea hondatuta duela.
- Ziurtatu lurra egokia deskargatzeko arriskua murrizteko.
- Mantendu ontziratzeko materialak haurren eskura.
- The supplemental heating mode is not intended as a primary heat source. Use it to support your main heating system when outdoor temperatures are between 23°F and 76°F.
3. Produktua amaitu daview
The Keystone KSTHW25B is a versatile air conditioning unit designed for both window and through-the-wall installation. It offers multiple functions to maintain indoor comfort.
Ezaugarri nagusiak:
- Hozteko gaitasuna: 23,200 BTU, suitable for rooms up to 1,500 sq. ft.
- Berogailu osagarria: 16,000 BTU, for use when outdoor temperatures are between 23°F and 76°F.
- Deshumidifikazioa: Orduko 5.7 pinta hezetasun kentzen ditu.
- Fan funtzioa: Circulates air with multiple fan speeds.
- Urruneko kontrol adimenduna: Features a 'Follow Me' function for precise temperature sensing.
- Energy-Saving Modes: Includes 'Energy Saver' and 'Sleep' modes.
- Instalazio malgutasuna: Designed for window or through-the-wall installation with a removable chassis.

3.1. irudia: Aurrealdea view of the Keystone KSTHW25B Air Conditioner.

3.2 Irudia: Gainetikview of the unit's 4-in-1 functionality.
4. Instalazioa
The KSTHW25B unit can be installed in a window or through an exterior wall. A window installation kit is included.
4.1 Baldintza elektrikoak
This unit requires a dedicated 230-volt, 25-amp circuit with a NEMA 6-30P plug. Ensure your electrical system can support these requirements before installation. Do not use extension cords or adapters.

Figure 4.1: Electrical connection details for the 230V/25A NEMA 6-30P plug.
4.2 Leiho-instalazioa
The unit comes with an adjustable window kit. The minimum window height required for installation is 19.5 inches. Compatible window widths range from 31 to 42 inches.

Figure 4.2: Window installation with compatible width range.

4.3. irudia: Adibample of window installation.
4.3 Through-the-Wall Installation
The unit features a removable chassis for through-the-wall installation. Refer to the detailed instructions provided in the separate installation guide for specific wall sleeve requirements and procedures.
5. Funtzionamendu-argibideak
Your Keystone air conditioner can be operated using the control panel on the unit or the included smart remote control.
5.1 Urruneko kontrola
The smart remote control features a 'Follow Me' function, which senses the temperature at its location and sends this data to the unit every 3 minutes for optimized comfort. This allows the unit to adjust its operation based on the temperature where you are, rather than just at the unit's location.

Figure 5.1: Smart remote control for convenient operation.
5.2 Funtzionamendu moduak
- Cool modua: Provides cooling for the room. Adjust temperature and fan speed as desired.
- Heat Mode (Supplemental): Provides supplemental heating. This mode is effective when outdoor temperatures are between 23°F and 76°F. It is not designed to be a primary heat source during colder months.
- Deshezegailu modua: Reduces humidity in the room. The fan operates at a low speed in this mode.
- Fan modua: Circulates air without cooling or heating. Select desired fan speed (Low, Medium, High).
5.3 Energy-Saving Features
- Energia aurrezteko modua: The fan will cycle on and off with the compressor to reduce energy consumption.
- Lo egiteko modua: Gradually increases the set temperature over several hours to save energy and provide comfortable sleeping conditions.
- 24 orduko tenporizadorea: Allows you to program the unit to turn on or off automatically within a 24-hour period.

Figure 5.2: Sleep mode for energy efficiency and comfort.
6. Mantentzea
Mantentze-lan erregularrak zure aire girotuaren errendimendu optimoa eta iraupen luzea bermatzen ditu.
6.1 Aire-iragazkiaren garbiketa
The unit is equipped with a mesh air filter. A 'Filter Light Reminder' will illuminate to indicate when the filter needs cleaning. To clean:
- Deskonektatu energia unitateari.
- Remove the front panel and slide out the air filter.
- Garbitu iragazkia ur epel eta xaboitsuarekin. Ondo garbitu.
- Utzi iragazkia guztiz lehortzen berriro instalatu aurretik.
- Reinstall the filter and front panel, then restore power.
6.2 Garbiketa orokorra
Garbitu unitatearen kanpoaldea leun batekin, damp oihalik. Ez erabili produktu kimiko gogorrik edo garbitzaile urratzailerik. Ziurtatu drainatze-eremua oztoporik gabe dagoela.
7. Arazoak
Bezeroarentzako arreta-zerbitzuarekin harremanetan jarri aurretik, berriroview arazo eta irtenbide ohikoenak hauek dira:
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Unitatea ez da pizten | Argirik ez, etengailu magnetotermikoa jauzi egin du, entxufea askatuta. | Check power supply, reset breaker, ensure plug is fully inserted. |
| Hozte/berotze nahikoa ez | Dirty air filter, blocked air intake/outlet, room too large, doors/windows open. | Clean filter, clear obstructions, ensure proper room size, close doors/windows. |
| Kanpoan tantaka ura | Funtzionamendu normala (kondentsazioa). | This is normal during cooling/dehumidifying. Ensure proper drainage. |
| Unitatea zaratatsua da | Pieza solteak, unitatea maila ezan, haizagailua oztopatzea. | Check for loose components, ensure unit is level, clear fan area. |
8. Zehaztapenak
Technical details for the Keystone KSTHW25B Air Conditioner:

Figure 8.1: Physical dimensions and weight of the unit.

Figure 8.2: Room size guide based on BTU capacity.
| Zehaztapena | Balioa |
|---|---|
| Modelo zenbakia | KSTHW25B |
| Hozte Potentzia | 23,200 BTU |
| Supplemental Heating Power | 16,000 BTU |
| Solairuaren Estaldura | Gehienez 1,500 mXNUMX. Ft. |
| liburukiatage | 230 Volt |
| Deshezegailuaren Ahalmena | 5.7 pinta/ordu |
| Zarata Maila | 56.3 dB |
| Produktuaren neurriak (L x W x H) | 25.39 x 23.62 x 17.91 hazbete |
| Elementuaren pisua | 121 kilo |
| Forma-faktorea | Window/Wall |
| BEE Izarren Balorazioa | 4 izar |
| Energia-eraginkortasun sasoikoaren ratioa (SEER) | 9.4 |
| Dakarten osagaiak | AC unit, remote, batteries, mesh air filter, window installation kit |
9. Bermea eta Laguntza
9.1 Bermearen informazioa
This Keystone air conditioner comes with a 1 urteko bermea covering parts and labor. Additionally, there is an extended 4 urteko bermea specifically for the sealed system components.
Mesedez, gorde zure erosketa-froga berme-erreklamazioetarako.
9.2 Bezeroarentzako laguntza
For technical assistance, troubleshooting beyond this manual, or warranty service, please contact Keystone customer support. Refer to the contact information provided with your product packaging or visit the official Keystone webgunea uneko laguntza-xehetasunak ikusteko.





