Product Overview

The Heatmiser Slimline V4 Programmable Thermostat combines a room thermostat and heating programmer into one easy-to-use control, providing accurate temperature management with flexible scheduling options.

Designed for use with a wide range of heating systems including wet underfloor heating applications, the Slimline V4 allows users to set up to 4 separate comfort temperatures throughout the day, helping improve comfort and energy efficiency.

The Slimline V4 is one of Heatmiser's most popular wired thermostats, offering reliable control without the complexity of app-based systems. It is ideal for installers and homeowners looking for a professional, programmable heating control solution.

With a clear large display, illuminated touch-style controls and a slimline flush-mounted design, the thermostat provides a modern appearance suitable for both new build and refurbishment projects.

The thermostat also includes both remote air sensor and floor sensor compatibility, making it particularly suitable for underfloor heating installations where accurate temperature monitoring is required.

Ideal Applications

• Wet underfloor heating systems
• UFH wiring centre controlled zones
• New build heating installations
• Home renovation projects
• Replacement for older Heatmiser programmable thermostats
• Individual room heating control
• Systems requiring programmable temperature schedules

Key Features

• Thermostat and programmer combined - no separate time clock required.
• 4 comfort levels per day allowing flexible heating schedules.
• Self-learning Optimum Start helps achieve the desired temperature at the required time.
• Large clear display for easy viewing and operation.
• Thermostat or timer mode for flexible system configuration.
• Remote air sensor facility available with optional sensor probe.
• Floor sensor compatible for underfloor heating applications.
• Temperature hold facility for temporary adjustments.
• Holiday facility for improved energy management when away.
• Automatic white backlit display switches off after 30 seconds.
• Flush mounting design provides a clean professional finish.
• Multi-buy pricing available for multi-zone UFH installations.

Technical Specifications

Heating Control Features

The Slimline V4 includes several advanced functions designed to improve comfort and heating efficiency:

• Self-learning Optimum Start - automatically adjusts heating start times to reach the required temperature when needed.
• Temperature Hold Facility - allows temporary changes without altering the main programme.
• Holiday Facility - maintains efficient heating control while away.
• Frost Protection - helps protect heating systems during colder periods.
• Selectable °C / °F operation for user preference.
• Key locking facility prevents unwanted adjustments.

Installation Guidance

• Designed for wired connection to compatible heating control systems.
• Suitable for use with UFH wiring centres and zone controls.
• Remote sensors are available separately where required.
• Floor sensor installation is recommended where floor temperature limitation is required.
• Always ensure compatibility with the existing heating system before installation.

Important Information

This is a wired Heatmiser thermostat and does not include wireless connectivity or app control.

For smart app-based control, a compatible Heatmiser Neo system would be required.

Remote air sensors and floor sensor probes are optional accessories and are not included unless stated.

Please check wiring compatibility before purchase. Professional installation is recommended.

Box Contents

• 1 x Heatmiser Slimline V4 Programmable Thermostat (White)
• Installation instructions
• Fixing accessories

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