2. Connect the vacuum pump to the three-way stop valve of the air energy water heater host, vacuumize to 5pa, wait for 15min, and then tighten the exhaust nut on the three-way stop valve of the water heater host. In order to ensure that the vacuum degree is qualified, the evacuation time should be no less than 20 minutes.
If it is really difficult to evacuate the air on site by vacuumizing, external evacuation and leak detection can be carried out with refrigerant. After evacuation, the residual pressure of refrigerant gas should not exceed 0.05MPa, and the evacuation procedure is as follows:
① Remove the valve covers of the two-way cut-off valve and the three-way cut-off valve of the air energy water heater host.
② Loosen the valve stem of the two-way stop valve 1/4 turns, and immediately press the exhaust thimble of the three-way stop valve to exhaust for 8~ 10 seconds.
③ Turn the spool of the stop valve counterclockwise with an Allen wrench until it is fully opened! Replace all covers and tighten them.
④ Leak detection: use soapy water to check whether there is any leakage at each pipe connection point and each cap. If there is, tighten it with a wrench until there is no leakage. Never leak.
The ranking of air source water heaters is paid for, hehe, the elders are not in it!
Is the air source water heater good? The gas source is ok, it can save electricity, and it can be used in cloudy and rainy days, but it is not easy to use in places where winter is too cold in the north. Solar energy is also energy-saving, that is, when there is no sun, it needs electric assistance and can only be installed on the roof. Price: Air energy is more expensive than solar energy.
The air source water heater is suitable for areas where the outdoor temperature is above 5 degrees all the year round, and the efficiency below 0 degrees is very low, because its heating principle is the same as that of heat pump air conditioning, and the heat energy is taken from outdoor air. The lower the outdoor air temperature, the lower the heating efficiency. If the outdoor temperature is below 0 degrees, heating is mainly provided by auxiliary electric heating. For ordinary families, there will be a very prominent contradiction when using it: the consumption of domestic hot water is small in summer, but the efficiency of air source water heater is higher at this time, but it is the opposite in winter. It has the same shortcomings as solar water heater, and the initial investment is not low, even higher than solar water heater.
So choose according to the actual situation in your area.
If you are in the north, you'd better buy an electric water heater. Mature technology, low power consumption. Electricity consumption per day 1-2 kwh, the cost is only a few dollars.
Conte air source water heater is good.
1. Better energy saving effect: Compared with other heating methods, it can save up to 75% energy consumption.
2. Unique heat pump technology, wide working range: it can work normally at minus 10 to over 40 degrees above zero without auxiliary heating. At the same time, due to the strict separation of water and electricity, there is no potential safety hazard.
Preparation of 3.60-degree hot water: the temperature of hot water meets the international hygiene requirements.
4. No water pollution: The patented heat exchange technology completely eliminates the possibility of any refrigerant polluting drinking water.
5. International brand, quality assurance: the implementation is reliable and trouble-free, ensuring that you have no worries. Incredibly, even some machines can run after forest fires.
6. Durable, longer service life: internationally renowned brand parts are used, with complete protection, and the most durable enamel steel plate confined water tank is equipped. At present, there are still many Conte heat pump water heaters operating normally for more than 20 years.
7. Large amount of hot water and stable outlet temperature are deeply loved by users.
8. Faster heating: the heat pump has strong power, faster heating, comfort and convenience.
9. Simple installation: integrated design, no need to connect refrigeration pipeline on site, saving land occupation. There are water inlets and water outlets on both sides of the water tank, which is flexible to install.
10. More environmental protection: environmental protection refrigerant, no fear of ozone layer consumption, energy saving and environmental protection, creating a harmonious living environment.
Not easy to use, especially in the north ... heating is slow, time-consuming and power-consuming; It is difficult to clean the dirt after long-term use. Will you buy it if the dealer doesn't say it's better
The price of air source water heaters is different, and the price varies a lot. If you buy it, you must find a local dealer for after-sales convenience, and you must also look at the measurement and installation site. Because the air energy of each manufacturer is different, energy saving and safety are the first choice. We have installed a Bilai direct-heating air-energy integrated machine, and the installation is very simple. Just connect the water and electrify it. Remember to call the dealer to see the scene and arrange the data cable of the monitor before buying.
What kind of air source water heater do you need, domestic or commercial? How many p's do you want?