First, how to install the ceiling air conditioning unit?
1, in terms of installation, it is the air handling unit hoisted by the terminal system of the central air conditioner. It is necessary to know that air can be filtered, cooled and dehumidified, heated, etc. And fresh air can be introduced, which is suitable for sending the treated air to a certain distance through the air duct, especially for small commercial and industrial air conditioning projects. There are 39 specifications of this series of units *** 13, with the air flow range of 1500 ~ 15000 m3/h and the cooling capacity range of 7.8kw ~ 277.3kw. The unit is ivory in appearance and equipped with nylon filter screen. The heat exchange effect is remarkable.
2. During construction, the ceiling air conditioning unit should be installed horizontally in the ceiling interlayer. Also know that the side of the condensate pipe is allowed to be five thousandths lower, but not higher, so as to ensure the smooth discharge of condensate. Sufficient installation and maintenance space should be left around the unit. The condensate drain connected to the unit must be equipped with a water seal with sufficient height. The water pipe of the surface cooler is downward inlet and upward outlet, and the filter.
3. Understand that the air pipe connected to the fish unit needs flexible connection, and also know that the water pipe connected to the unit needs winding connection, and the torque when taking over should not be too large to avoid the loss of the heat exchanger. Moreover, the pipeline must be supported separately, and the heavy one should be borne by the motor group. The power supply of the device is 380 volts and 50 hertz. Only when the power supply meets the requirements can the motor be connected. After turning on the power supply, check whether the fan rotates correctly. If not, stop the machine and change the phase sequence of the power supply. In addition, there must be other reliable protection such as overload, overheating and missing parts.
Second, how to maintain the ceiling air conditioner
1. In terms of maintenance, the cold and hot medium of the unit should be pure softened water. It is also necessary to know that its working pressure does not exceed 1.6Mpa, and the temperature rise of the fan bearing does not exceed 40℃ during normal operation of the unit. 3. The outlet pipeline of the unit is equipped with an exhaust valve, which must be opened before the first operation and cold-hot conversion to exhaust the air in the heat exchanger and pipeline, so as not to affect the heat exchange effect. The heating temperature in winter should not be higher than 80℃.
2. In addition, when a brand-new air unit in severe cold area starts heating in winter, we need to know that before starting the fan, the heater should be turned on for 5- 10 minutes to prevent a large amount of cold air from forming ice jam in the heat exchanger; When stopping, the fresh air valve should be closed first, then the heater, preferably the blower. When the unit is not used for a long time in winter, the water in the coil should be discharged and antifreeze should be added in the tube. Ensure hot water circulation in the pipeline to prevent rust and frost.
3. Finally, when stopping the heat exchanger in other seasons except winter, it should be understood that the heat exchanger should also be filled with water to reduce corrosion. The filter should be cleaned regularly to ensure the use effect of the unit. If it is found that the air volume decreases, it is generally caused by excessive dust accumulation in the filter. After the unit runs for one month, check whether the hoisting fastening bolts are loose. After two to three years of operation, the unit should be fully maintained, and lubricating parts such as motors should be regularly filled with lubricating oil.
How to install the ceiling air conditioning unit is introduced by Bian Xiao, and it will be of great help when we install it.