3 points quick selection zero cold water DC pump

The main principle of the zero cold water gas water heater is to use the built-in increased DC frequency conversion pump to circulate the cold water section in the hot water pipe in advance, so that the faucet does not need to put residual cold water, but it can achieve instant heating. How to choose a zero cooling water DC variable frequency pump to achieve the best matching effect? Give you the following suggestions:

1. Try to choose a DC variable frequency pump with large flow and strong power to easily realize cycle boosting.

If the type of user is large, the water pipe is too long, resulting in a long distance of the circulation pipe, or the water pressure of high-rise users is unstable and the water pressure is low, which will cause the zero cooling water circulation speed to be too slow, and the user needs to wait for a long time.

2. Choose a circulating booster pump that can be intelligently matched, which is more worry-free and energy-saving.

1) The DC variable frequency pump can customize the temperature sensing output function, control the start and stop of the pump through the sensing temperature range, avoid 24 hours of super long standby, and save energy;

2) According to the water pressure, customize the PWM adjustment function to achieve the best efficiency. Customized pump and sensor matching control, intelligent boosting of the pump, the pump automatically replenishes the water output of the system, the maximum boosting speed, no pump running at a low speed, and keeps the system pressure constant; the water output is stable and the water temperature is constant.

3. Try to choose manufacturers who have been focusing on DC variable frequency pumps for a long time.

With the popularity of zero-cooled water heaters, some companies that produce AC pumps have also launched zero-cooled DC inverter pumps. However, zero-cooled DC variable frequency pumps, as DC pumps, have high requirements for electronic R&D technology and production environment, and traditional AC pump manufacturers are still stuck in the R&D of traditional manufacturing industries. In terms of production and control, whether it is electrostatic control or electronic control, there may be many risks.

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