Do you have a question about the Vaillant VCW DE 194/4-5 A-H and is the answer not in the manual?
Classification of warnings by danger severity using symbols and signal words.
Specifies work requiring competent persons due to potential risks.
Actions to take if gas is detected in the building to prevent fatal risks.
Procedures for connecting the gas supply to the product.
Steps for connecting domestic hot and cold water to the product.
Procedures for connecting the heating flow and return pipes.
Guidelines for correctly connecting the flue pipe for safe exhaust removal.
Procedures and safety precautions for electrical connections by qualified personnel.
Procedures for ensuring water quality and treating it before filling.
Steps for filling the heating system with water and checking pressure.
How to remove air from the heating system after filling.
Procedures for verifying and adjusting gas type and connection pressure.
Crucial information for the user regarding legionella prevention measures.
Adhering to manufacturer's recommended intervals for checks.
Procedure to test the functionality of flue gas sensors.
How to check and adjust the expansion vessel's pressure.
Methods for resolving fault codes and messages displayed by the product.
Comprehensive list of fault codes, their meanings, and possible causes.