In operation, the evaporator absorbs heat from the ambient thermal energy of the air, which is compressed by the compressor into a high-temperature and high-pressure gas, and when it condenses into a liquid through the condenser, the heat released is transferred to the water in the tank, causing the water temperature to rise. The condensed liquid is throttled back to the evaporator through the expansion valve and then absorbs heat from the air, and so on.

①. The evaporator plays a role in absorbing heat during the operation of the host. In the process of running refrigerant than the air temperature is low, driven by the fan air flow from the evaporator, the refrigerant in the evaporator to absorb the heat in the air. For example, when the air temperature is 0 ℃, the refrigerant is -8 ℃ or so, the high temperature of the air heat transfer to the low temperature of the refrigerant, so as to achieve the purpose of absorbing heat energy from the air.

②. Compressor in the air water heater in the ‘heart’ part. By the compressor work to absorb heat after the refrigerant for compression, compressed into high temperature and high pressure gas, the highest temperature up to 120 ℃.

③. Condenser in the work of the role of heat transfer, by the compressor work after the high temperature refrigerant and water heat exchange. High-temperature refrigerant by the compressor work pressure into the condenser, low-temperature water encountered high-temperature refrigerant heat exchange between the two, so as to achieve the purpose of raising the temperature of the water.

The number is only called on the engineering, not a legal unit of measurement, the industry is used to ordinary air conditioning cooling capacity per 2200-2600W is counted as 1 pi, the number of pi of air can just follow the air conditioning industry called, but the air can be born for the heating, the cooling capacity divided into pi is not standardised, the choice of air can be more concerned about the heating capacity rather than the number of pi, the number of pi of the heat pump products is just a vague concept of units, the state has no relevant policy. At present, the state has not issued a relevant policy.

Fog or host ‘smoke’ hot air; host sound louder than usual seems to have a strange noise; fan does not turn the motor buzzing; host under the water flow; are the normal phenomenon of frost. Host under the drainage is condensate, will not have an impact on the system pressure, if the system is leaking, will fall pressure. Switch off the machine for a period of time or drainage, is the condensation on the fins, is also a normal phenomenon.

When the machine is just switched on, the host will not rotate for 1-2 minutes, the machine has a self-test function, a normal phenomenon.

1, energy storage, heating temperature continues to be balanced, there will be no indoor temperature cold and hot phenomenon, to avoid frequent start and stop of the host;

2, high efficiency defrost, reduce defrost time.

3, the top of the water tank exhaust, exhaust effect is better, to protect the normal operation of the system.

Water from the tank's fill port or drain on the water pressure to see the pressure gauge, do not have to wait until 0 and then add, the pressure is less than 0.05 can be added to the water (general recommendations: floor heating 0.15-0.2, radiator 0.1-0.15). Some areas do not have pressure gauges installed, when to water, up to how much is considered full? The machine can run normally do not need to add water, if the lack of water, the panel will report the water flow switch failure, or the water tank gurgling is also a lack of water; on the water when you open the top of the water tank exhaust valve, up to the exhaust valve out of the water can be.

1, the host under the water inlet live connection removed;

2, the water tank under the sewage outlet open;

3, the lowest point of the pipeline drain valve open;

4, the pump at both ends of the live connection to remove the drainage, if it is a built-in pump, in the host near the bottom of the location of a drain, open the drain can be plate for the pump and the pump in the water drain, built-in pump is straight, and external pumps are different, will not store water.

Panel setting is the return water temperature, heating: water temperature is higher than the return water temperature within 10 degrees is normal; refrigeration: return water is higher than the water within 5 degrees is normal; stop running when the water temperature and the return water temperature is the same is normal.

This is a normal phenomenon, is the machine senses the low temperature to start the anti-freeze protection. The ambient temperature of 20 or 30 degrees also start, because the machine is on the cooling mode, the temperature of the machine is lower than about 10 degrees will also start the anti-freeze protection. Panel display: unit antifreeze, the water temperature is lower than 4 degrees, the external machine buzzing does not stop, this is a normal antifreeze protection, the water temperature reaches 12 degrees, stop antifreeze. The unit anti-freezing can be switched on.

Regardless of whether it is fixed-frequency or inverter, on state: the pump has been rotating without stopping; off state: the water temperature is lower than 5 degrees, it will start the antifreeze, the pump starts to work, the water temperature reaches 12 degrees, the pump stops working. Heating season is recommended not to pull the power cut, keep the power state machine has anti-freeze function.