1. Introdución
The Drayton LP522 (Mk4) is a sophisticated 2-channel programmer designed to provide precise control over your domestic heating and hot water systems. This unit features an easy-to-read backlit LCD screen and intuitive controls, allowing you to manage your energy consumption efficiently. It offers flexible programming options, including automatic summer/winter time changes, boost functions, and advance settings for both heating and hot water.

Figura 1: Fronte view of the Drayton LP522 (Mk4) Programmer, highlighting the LCD display and control buttons.
2. Instalación e configuración inicial
2.1 Precaucións de seguridade
Before commencing any installation work, ensure the mains electricity supply to the heating system is completely isolated at the consumer unit or fuse box. Installation should only be carried out by a competent person and in accordance with the latest IEE Wiring Regulations.
- Desconecte sempre a fonte de alimentación antes da instalación ou mantemento.
- Non expoña a unidade á humidade nin a temperaturas extremas.
- Asegúrese de que todas as conexións de cableado sexan seguras e correctas.
2.2 Montaxe
The LP522 (Mk4) is designed for direct replacement of many existing programmers, often utilizing the same industry-standard backplate. If replacing an older unit, carefully remove the old programmer by loosening the retaining screws at the bottom and lifting it off the backplate. The new LP522 (Mk4) can then be positioned onto the existing backplate and secured by tightening the screws.
If a new backplate installation is required, mount the supplied backplate securely to a flat wall surface, ensuring it is level. Refer to the wiring diagram provided with the physical product for terminal connections.
2.3 Cableado
Wiring should be performed by a qualified electrician. The LP522 (Mk4) operates on 230 Volts AC. Ensure correct connections for Live, Neutral, Heating On, and Hot Water On terminals as per the product's wiring diagram. Incorrect wiring can cause damage to the unit or the heating system.
2.4 Encendido inicial
Once installation is complete and verified, restore the mains electricity supply. The programmer's LCD screen will illuminate, and the internal clock will automatically set the correct time and date, including adjustments for summer/winter time changes. No manual time setting is typically required upon initial power-on.
3. Instrucións de funcionamento
3.1 Comprensión da pantalla
The backlit LCD screen displays the current time, day of the week, and the operational status of both heating and hot water channels. Indicators will show if a channel is currently ON, OFF, or in a timed/boost mode.
3.2 Axuste da hora e da data
The LP522 (Mk4) features an automatic time and date setting function, including automatic adjustment for daylight saving (summer/winter time). Manual adjustment is rarely needed but can be performed by following the specific instructions in the full product manual for advanced settings.
3.3 Programming Heating and Hot Water
The programmer offers "On/Once/Timed/Off" switching options for both heating and hot water channels. You can set up to three ON/OFF periods per day for each channel, allowing for flexible scheduling.
- Prema o botón "PROG" para entrar no modo de programación.
- Use the 'ADVANCE' or 'BOOST' buttons (often doubling as navigation arrows) to select the desired channel (Heating or Hot Water).
- Adjust the ON/OFF times for each period using the '+' and '-' buttons.
- Repeat for all desired days of the week.
- Press 'PROG' again or 'RUN' to exit programming mode and save settings.
3.4 Using Boost Function
The Boost function provides a temporary override to turn on heating or hot water for a set duration (1, 2, or 3 hours) outside of the programmed schedule. This is useful for short-term demands.
- Press the 'BOOST' button for the respective channel (Hot Water or Heating).
- Each press typically cycles through 1, 2, 3 hours, then OFF.
- The LCD will indicate the remaining boost time.
3.5 Función avanzada
The Advance function allows you to bring forward the next programmed ON or OFF period. For example, if heating is currently OFF but programmed to come ON later, pressing 'ADVANCE' will turn it ON immediately until the next programmed OFF time.
- Press the 'ADVANCE' button for the respective channel (Hot Water or Heating).
- The status of the channel will change to the next programmed state.
- The LCD will indicate the change.
4. Mantemento
The Drayton LP522 (Mk4) programmer requires minimal maintenance. Keep the unit clean by wiping it with a soft, dry cloth. Do not use abrasive cleaners or solvents. There are no user-serviceable parts inside the unit. Any internal issues should be addressed by a qualified technician.
5 Solución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| Sen visualización na pantalla. | Non hai subministración de enerxía á unidade. | Check mains power supply to the heating system. Ensure circuit breaker is ON. Verify wiring connections. |
| Heating/Hot water not coming on as programmed. | Incorrect program settings; System override (e.g., thermostat set too low); Boiler fault. | Review program settings for correct ON/OFF times. Check thermostat setting. Consult boiler manual or a heating engineer if boiler is not firing. |
| Hora/data incorrectas. | Power interruption; Internal battery issue (rare). | The unit should auto-correct after power restoration. If persistent, consult a qualified technician. |
If the problem persists after attempting these solutions, please contact a qualified heating engineer or Drayton customer support.
6. Especificacións técnicas
- Fabricante: Drayton
- Número de modelo: 123070 (LP522 Mk4)
- Número de peza: 25475
- Dimensións do produto: 15 x 9 x 3 cm
- Peso do artigo: 281 g
- Cor: Branco
- Fonte de enerxía: Eléctrico con cable
- Voltage: 230 voltios
- Estilo de visualización: LCD (retroiluminado)
- Características especiais: Automatic Summer/Winter Time Change, Boost Function, Advance Function
- Uso: Heating and Hot Water Control
- Pilas necesarias: No (internal battery for time backup)
7. Garantía e atención ao cliente
Drayton products are manufactured to high standards and are typically covered by a manufacturer's warranty against defects in materials or workmanship. Please refer to the warranty card included with your product or visit the official Drayton websitio web para coñecer os termos e condicións específicos da garantía.
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Drayton customer support directly. Contact details can usually be found on the manufacturer's websitio ou embalaxe do produto.





