This manual provides safety, installation, operation, maintenance and troubleshooting instructions for the Vaillant ecoTEC plus wall‑mounted gas condensing…
The ecoTEC plus series are wall‑mounted gas condensing boilers designed for residential heating and domestic hot water. The manual covers product features, recommended accessories, and the required safety precautions.
Key sections include safety instructions, installation and commissioning guidelines, operation procedures, control‑panel functions, pressure checks, start‑up steps, hot‑water temperature settings, fault codes, freeze‑protection measures, and maintenance recommendations. This manual is written in Chinese.
| Model numbers | JNG35-VU, JNG46-VU, JNG65-VU |
|---|---|
| Maximum thermal efficiency | up to 109 % |
| Operating pressure range (cold state) | 1.0 – 2.0 bar |
| Minimum temperature for freeze protection | 5 °C |
| Maximum domestic hot‑water temperature setting | 70 °C |
| Recommended hot‑water temperature to prevent legionella | ≥ 60 °C |