This user manual covers the operation, safety instructions, maintenance, and troubleshooting for Viessmann ecoTEC plus wall-hung gas condensing boilers.
The document serves as a comprehensive guide for users of the Viessmann ecoTEC plus series, specifically models JNG35-VU CN, JNG46-VU CN, and JNG65-VU CN. It details device characteristics such as high thermal efficiency (up to 109%) and low harmful emissions. The manual includes instructions on recommended accessories like controllers and thermostats to optimize energy saving. This manual is written in Chinese.
The boiler is designed to serve as a heat source for closed individual heating systems and to prepare domestic hot water.
Installation and maintenance must be performed by Viessmann company personnel or their designated agents according to specific safety regulations.
Open windows and doors to ventilate, evacuate immediately, and close the gas valve located below the boiler.