wrong action- water valve

[Mogena]

The water valve in my water heater is supposed to work with gas cock to control the gas and water flow proportionally. Normally, more water should mean more gas, higher flame. In fact it does the contrary. When I manually increase the water flow the flame reduces.
See picture below for better understanding of my question.

 

[hj]

You should send that question to the installer or the manufacturer, since we cannot help you repair it.

 

[Sponsor]

 

[Mogena]

Thanks. I will try to find a solution or , meanwhile, a compromise between water flow a acceptable temperature.