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Power World Machinery Equipment Co.,Ltd. 

 

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July 5, 2021

Do heat pump heat pump water heaters need to be vented?

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Yes! Many times, due to various reasons, the heat pump water heater is used well. Suddenly there was no water. The maintenance master came to check, but found that there was no problem. It just means that there is a lot of air in the heat pump water heater. Because there is no way to exhaust the air. So sometimes the water is hot and cold or sometimes there is no water at all or there is not much water, so it runs out very quickly.

 

 

So where does the air in the air source heat pump water heater come from?

It comes from the water or the outside air. When a new air source heat pump water heater is installed, the air in it is not completely exhausted and there are cases where it remains. If it is a domestic air energy heat pump water heater. During installation, a pressure relief valve is usually installed at the front end of the water inlet. It is also called the exhaust method or the safety valve. This valve has two functions. The first is to control the pressure of the water to a certain range by tap water. The second is that the water is heated in a pressurized water tank with air energy. Thermal expansion. At this time, the pressure on the water tank is very high, but the pressure relief valve also removes part of this part of the pressure. But installing the safety law does not mean that it will automatically exhaust. For example, if the water is cut off, there will always be some air in the middle of the water that is newly entered. When there is air in the heat pump water heater, or the water will not enter. Sometimes the water gets in, maybe half a bucket of water, so it will be over soon.

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The emptying method of domestic air source heat pump water heater

 

 

It's actually really easy. When the new heat pump water heater is filled for the first time, the cold water and hot water valves can be opened at the same time. As the water level rises, the air is gradually drained from the water outlet in the upper part of the tank through the hot water faucet. At this time, the hot water outlet is the exhaust air. When the water outlet starts to flow, the heat pump water heater is filled with water and the air is exhausted. Just turn on the hot water faucet and let the hot water drain out all the time. Until all the water comes out, it is enough. Some users may cherish that little water source and refuse to drain, which causes the air in the heat pump water heater to be incompletely drained. The air in the air energy tank cannot be emptied, which causes the phenomenon of no hot water occur.

 

Emptying method of commercial air source heat pump water heater

Commercial air source heat pump water heaters are being tested. It is necessary to exhaust the air in the water pump, or else the water pump will keep idling and cannot circulate the water. On the surface, it looks like the pump is rotating, but in fact, no water passes through the pump. At this time, the air needs to be exhausted. The method of exhausting is generally to open the drain screw on the water pump to let it flow out slightly, and then start the machine. During the start-up process, do not turn off the screw, let it naturally small Stream for a while. The entire emptying is solved. Then encounter. If the water in the water tank is drained, or the water is suddenly stopped, it may cause the presence of air in the air energy pump, which will affect the water use, so at this time. The emptying is still the same as the original method. Open the screw on the pump and let it slowly seep out and then turn it on again. After a few minutes, you can tighten the screw.

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There is also a water pump that does not drain the screw, so it is necessary to start it a few times more frequently to allow water to pass through the pump.

 

The emptying method of the air energy heat pump water heater is not complicated, and it is basically no problem to operate according to the above method. Does it feel simple?

 

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