Year1
- 型号：
- 齐全
- 规格：
- 齐全
Horizontal surface-mounted fan coil unit is mainly composed of fan heat exchanger (coil) condensation tray shell and controller. It is suitable for centralized air conditioning systems. Advanced design, complete varieties, superior performance, wide range of uses, usually used in various hotels, apartments, restaurants, hospitals, commercial buildings, etc. that require low noise and flexible temperature adjustment. Product Features
Small footprint and convenient layout. Compact size, good balance and quick installation. The structure is symmetrical, the lines are crisp, the edges are crisp and the appearance is beautiful. Preview picture
The high heat transfer efficiency turbulent aluminum fin steel tube heat exchanger produced by Italian assembly line has high efficiency.
The machine has three adjustable speeds and uses a permanent capacitor motor to save energy and save electricity.
It uses a high-precision bearing motor that does not need to replenish lubricating oil and specially selected sound-absorbing and thermal insulation materials to run smoothly, with low noise and long life. A filter should be installed at the water inlet of the unit. When flushing the main pipe of the refrigerant water system, sewage is not allowed to pass through the coil. An exhaust device should be installed at the highest point of the coil pipe connection, and a drain device should be installed at the lowest point.
The condensate discharge pipe of the fan coil unit must have a certain slope to ensure that no water accumulates in the drip tray. Key points for use: The main control parameters for the unit are rated air volume, outlet static pressure, input power, rated cooling capacity, rated heat supply, noise, water resistance, etc.
The air supply volume of the fan coil unit is approximately less than the outlet static pressure (the outlet static pressure is greater than the high static pressure type).
The selection of unit specifications should be determined by factors such as the room's cooling and heating load and the heat-humidity ratio of the air
) When the fresh air and room air parameters are of equal enthalpy, the fan coil unit only bears the burden of the heat generated inside the building envelope and the room. Cooling and heating load
) When the fresh air enthalpy value is greater or smaller than the room air enthalpy value, the fan coil unit should add or deduct part of the fresh air cooling and heating load
) When the absolute moisture content of the fresh air is lower than the room air When the moisture content can fully bear the room's wet load, the fan coil can only bear the room's sensible heat load and should be configured according to dry working conditions
) When the room's sensible heat load accounts for a large proportion, the fan coil should be checked through sensible heat balance calculations Manage the air volume of the unit.
When selecting a unit, the deviation between the actual performance and the rated value should be considered and the following characteristics should be paid attention to
) The rated cooling capacity of the unit is generally the test value under the condition that the air enthalpy drop value is equal to the value
) Single The rated heat supply of the coil unit is generally times the rated cooling capacity
) The rated values and parameters are the values of the fan at high-end speeds. When designing, it is generally advisable to select the values at mid-range wind speeds in the product sample. If the product does not provide rating data at different wind speeds, please refer to the table for conversion.
Table air volume conversion coefficient
_ Rating value category
High-grade wind speed
Mid-grade wind speed
Low-grade wind speed
Air volume
For dual-pipe water systems (applicable to air conditioning systems that switch heating or cooling only according to seasons or only according to air conditioning zones), the fan coil unit is only equipped with one set of coils for both winter and summer heating/cooling. model. For four-pipe water systems (suitable for air conditioning systems with frequent heating/cooling switching), the fan coil unit should be equipped with a combined model with two sets of heating and cooling coils.
For low-temperature cold storage air conditioning systems, large temperature difference units should be selected.
At present, the fan coil unit has the following control types
) With a three-speed selector switch, it can switch between winter and summer. The room temperature controller is linked to the waterway electric valve to implement automatic control
) With a three-speed selector switch, it can switch between winter and summer. The room temperature controller is used to start and stop the fan to implement semi-automatic control
) It only has a three-speed selector switch to implement manual control.
) Stepless fan speed control.
According to the requirements of relevant energy-saving standards, a control method combining an electric temperature control valve and three-speed wind speed should be used.
When selecting products, attention should be paid to three issues: noise condensation and the quality of the motor used. This is an item with many quality problems in current sampling inspections.
Pay attention to and differentiate between the different marking methods of fan coil units at home and abroad when designing and selecting them.
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