The Heatmiser DS1-L is a 230V electronic room thermostat designed for conventional and combi-boiler systems. Built for accuracy and efficiency, it works alongside a separate programmer to give you complete control over your heating system.

• Advanced Electronic Dial Control – Provides precise and reliable temperature regulation, ensuring consistent comfort.
• Power & Heat Indicators – LED indicators show when the power is on and when heating is active, keeping you informed.
• Sleek & Modern Design – A minimalist aesthetic blends effortlessly into any interior, offering both style and functionality.
• Easy Temperature Adjustment – Intuitive dial control allows for quick fine-tuning of your room temperature.
• Variable Switching Differential – Customize the temperature range for on/off switching, enhancing energy efficiency.
• Built-in Air Sensor – Ensures accurate ambient temperature measurement for optimal heating performance.

• The Heatmiser DS1-L requires a 3-wire system (Live, Neutral, and Switch wire).
• Before installation, check your wiring and refer to the installation manual for compatibility.

1. Remove the front panel by unscrewing the securing screws on the bottom.
2. Use the backplate as a template to mark two drill hole positions on the wall.
3. Drill the marked positions and insert wall plugs for secure fitting.
4. Wire the thermostat according to the wiring diagram.
5. Secure the backplate to the backbox using screws.
6. Reattach the front panel and tighten the securing screws.

With advanced features, precision temperature regulation, and a modern design, the Heatmiser DS1-L delivers exceptional heating control and energy efficiency—making it the perfect upgrade for your home or workspace.

• More accurate than standard thermostats
• Stylish, modern design
• Energy-efficient heating control
• Quick and easy installation

Take control of your heating today with the Heatmiser DS1-L Central Heating Dial Thermostat!