Recently, most parts of the north have ushered in snowfall, and the temperature has dropped significantly. For users of large-scale commercial air heating heat pump central heating in the north, although the unit can operate stably in a low temperature environment of -35, it is also necessary to take certain anti-freezing measures for heating heat pump units in order to prevent problems before they occur and ensure the comfort of heating for users.
So how to avoid "frostbite" of commercial air source heating heat pumps?Compiled a few antifreeze operation guides.
1) Increase pipe insulation: For outdoor pipes and equipment, insulation materials should be used for wrapping to reduce heat loss. At the same time, the valves and bends of the pipeline should also be insulated.
2) Avoid arbitrary power cut-off: During the use of air source heat pumps, arbitrary power cut-offs should be avoided, especially during low temperatures. If the power must be cut off, make sure that all the water in the unit is emptied to prevent the unit from freezing and breaking.
3) Add antifreeze: Adding antifreeze to the system is an effective means of antifreeze, but you need to pay attention to choosing the best antifreeze and adding it according to the proportion provided by the manufacturer.
4) Reasonable design of condensate pipeline: For the reasonable design of condensate pipeline, the installation position of the main engine can be increased, and the heat tracing heat preservation can be added to the chassis of the main engine to prevent frosting and ice melting.
5) Increase ethanol alcohol: Adding ethanol alcohol to the aqueous solution of the system can increase frost resistance. The amount added is subject to local minimum temperatures.
6) Other precautions: In extreme cold weather, all the water in the unit, water pump and outdoor pipeline should be emptiedAt the same time, pay attention to the insulation treatment of pipeline valves and bends;Dispose of condensate properly to prevent freezing.
For commercial air source heat pump heating units with a long operating life, in addition to anti-freezing, it is also necessary to clean the unit to avoid thick dust and debris in the unit affecting the normal operation of the unit.
1) Clean the filter: The filter screen of the air energy heat pump can not only prevent dust from entering the equipment, but also filter bacteria and odors in the air. Every once in a while, remove the filter for cleaning, or replace it with a new one.
2) Clean the condensate pipe: The air energy heat pump will produce a large amount of condensate during the working process, if it is not cleaned in time, it is easy to cause the internal temperature of the heat pump to drop, affecting the normal use of the heat pump.
3) Regular descaling: Due to water quality problems, the heat exchanger of the air energy heat pump is prone to mildew and rot, and the scale layer accumulates, so it is necessary to carry out regular descaling frequently.
Knowing the anti-freezing measures, how to clean the unit, what kind of phenomenon is the commercial air source heat pump is "frostbitten"?The main points are the following.
1) The heat pump unit cannot be started, or the evaporator outlet temperature is low after starting, the high pressure alarm or low pressure alarm, etc., and the refrigeration system compressor is protected by subcooling due to low evaporation temperature, resulting in the refrigeration system not working.
2) After the evaporator is frozen, the condensate discharged will increase significantly, and even drip out.
3) Abnormal phenomena such as abnormal sound vibration and fluid trickle inside the equipment.
4) The displayed values of the measuring equipment are all outliers.
If the above-mentioned frostbite occurs, it is recommended to contact the professional after-sales technicians of Keli Air Energy Heat Pump for treatment. At the same time, the commercial air source heat pump heating unit can call 400-166-3609 at any time if you have any questions during operation
Through efficient, stable, safe and reliable products and professional services, Keli heat pump will escort you to a warm and comfortable winter.