Product Description
The highly efficient Potterton Sirius three 70 wall-hung condensing boiler achieves an ErP A rating thanks in large part to its impressive 9:1 modulating ratio which is designed to reduce on/off cycling, improving boiler longevity. This 70kW output unit also offers the lowest possible NOx rating inbuilt weather compensation and easy to use advanced programming functions alongside a simple descriptive display. Compact and lightweight, the Sirius three 70 makes installation easy in almost any position.
Product Features
- Compact and lightweight
- Lowest NOx ratings on the market
- Modulation ratios up to 9:1 reduce on/off cycling
- Simple descriptive display
- Easy to use advanced programming functions
- Gross seasonal efficiency up to 97.3%
- Cascade output up to 700kW
- 5 Years warranty
Web Pack Includes
Boiler only