The Summum 140 3S is a three-sided gas fireplace that offers an expansive view of flames while maintaining a sleek, contemporary profile. Its Real Flame Burner L LED produces a highly realistic fire image, enhanced by an LED-lit fire bed and true-to-life logs, creating the warmth and atmosphere of a traditional wood fire with modern convenience.
Delivering up to 18.5 kW of heat at 90% efficiency, the Summum 140 3S provides both powerful warmth and striking visual appeal. The flames remain vibrant even at low settings, and its shallow installation depth combined with a 130/200 mm balanced flue system allows for versatile placement in a variety of living spaces. Optional Powerfan technology further expands installation flexibility.
User-focused design ensures intuitive control and customization. A standard remote is included, with optional app-based control, Wi-Fi operation, and home automation integration. Additional features such as anti-reflective glass, reflective panels, access doors, convection grills, and the Invisimesh safety screen allow the fireplace to be fully tailored to both design preferences and functional requirements.
Features & Benefits
- Three-sided design for panoramic flame views
- Real Flame Burner L LED with lifelike fire effect
- 90% efficiency for economical heating
- Wide heat output range for comfort control
- Shallow installation depth saves space
- Balanced flue system for flexible placement
- Standard remote control with optional smart operation
- Powerfan option for versatile installation
- Anti-reflective glass and reflective panels available
- Access door and safety accessories for convenience
Options Explained

- Black reflective panels – Intensify the flame effect by reflecting light back into the firebox for added depth and brightness.
- Anti-reflective glass – Minimises reflections so the flames remain clear from every angle in bright or open spaces.
- Operation via app (Wi-Fi kit) – Enables smartphone or tablet control, scheduling, and remote operation.
- Connect to home automation – Integrates the fireplace with smart home systems for centralised control.
- Puck controller – Compact wireless controller for fast, intuitive adjustments.
- Powerfan – Boosts flue performance, allowing installation even when the flue must travel long distances or take bends.
- Convection grills (built-in or surface-mounted) – Allow heat distribution through your chosen interior design approach.
- Wall switch – Simple, fixed position on/off and control interface.
- LED bottom lighting – Decorative base lighting that enhances the flame effect when the fire is on or off.
- Safety screen Invisimesh – Nearly invisible mesh screen providing safety while preserving the clean aesthetic.
- Access door – Allows easier servicing and maintenance without disturbing the installation.
Specification:
| Net natural gas capacity (min-max) G25: | 3,5 – 17,6 kW |
|---|---|
| Net natural gas capacity (min-max) G20: | 2,7 – 18,2 kW |
| Net propane capacity (min-max) G31: | 3,7 – 18,5 kW |
| Efficiency: | 90% |
| Venting ø (mm): | 130/200 |

















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