Is the main water pipe between the fan coil and the main air conditioner as short as possible?
Disassembly and cleaning of fan filter screen
If the site installation space allows, comprehensively select a position where the pipeline length is shorter and the elbows are less to place the air conditioner host.
Benefits of reducing the length of main water pipe design and installation:
1. Reduce the loss of cold and heat, and ensure the cooling and heating effect of fan coil units.
If the main water pipe is too long, it may lead to an increase in heat loss during the transportation of refrigerant water, and then affect the terminal cooling capacity.
2. Reduce heat preservation costs and problems caused by heat preservation.
If the main water pipe is long, it will definitely increase the construction of pipe insulation. The more insulation layers, the higher the probability of problems in the whole insulation system.
3. Reduce the energy consumption of the water pump and save the later operation cost.
Because the main water pipe is short, the selection of water pump can also be small, which reduces the purchase cost of the water pump and the energy consumption of the water pump operation. Reduce the number of elbow diameter changes and enhance the stability of the air conditioning system. When the length/path difference of each branch of the water pipe is too large, the loop with a long pipe/large elbow diameter change has a larger impedance than other loops, and at this time, hydraulic imbalance may occur, resulting in insufficient refrigerant water flow in some loops, which will affect the cooling capacity of these loops.
HAVC system diagram
When the cold winter comes, does the air volume of your fan coil decrease? If the air volume decreases, then we can remove the filter screen of the fan coil and clean it.
Because there are many dust particles in the atmosphere, the aluminum fins of the fan coil in daily use are covered with dust and dirt under the long-term air supply and return effects.
Fan coil outlet blocked by dust:
1. It affects the heat exchange between chilled water and hot air, and affects the air temperature drop;
2. It affects the delivery of cold air that has cooled down after heat exchange, resulting in the air conditioning being turned on and the room still not cold or warm.
The central air conditioner has been in operation for 1-2 years.
It is recommended to clean the fan coil outlet. If there are professional cleaners nearby, it is recommended to clean the fan coil aluminum foil fins.
The cleaning fan coil unit of a central air conditioner can reduce bacteria and dust in indoor air, reduce the wind resistance of VAV air conditioner, improve heat exchange efficiency, increase air supply and save energy. Reduce the operating cost of air conditioning.
Regular maintenance of the fan coil unit system can also prolong the service life of the unit.
2 pipe vs 4 pipe system