User manual for Vaillant atmoVIT classic floor‑standing gas boilers VK 324/1-C to VK 564/1-C, covering safety, operation, troubleshooting and maintenance.
The atmoVIT classic series floor‑standing gas boilers are designed for residential and commercial heating, offering long service life, high efficiency and low NOx emissions. The manual describes the boiler’s features, application scope, CE certification and the digital information display (DIA) system.
Detailed instructions cover safe installation, operation of the control panel, heating and hot‑water modes, fault codes, regular maintenance, water‑pressure checks and anti‑freeze protection. Guidance is provided for troubleshooting fault codes such as F.28, F.20 and F.36, as well as for annual service by Vaillant‑authorized technicians. This manual is written in Chinese.
| NOx emission limit | ≤ 70 mg/kWh |
|---|---|
| Anti‑freeze activation temperature | ≤ 5 °C |
| Maximum hot‑water temperature setting | 70 °C |
| Anti‑freeze set temperature | 15 °C |
Check that the main gas valve and the boiler’s inlet valve are open, then press the reset key for about one second to reset the unit.
Press the reset key (2) and hold it for roughly one second; the boiler will attempt to restart.
Rotate the hot‑water temperature knob; the maximum setting is 70 °C, while the anti‑freeze position is set to 15 °C.