Shandong Grid Group Co

Our company's vertical concealed fan coil unit is a set of fan coil units. This model has an ultra-thin body and does not occupy effective space. The thickness can only be placed in the wall under the window or in the recess of the decorative board. The two forms of air outlet and front air outlet are suitable for places such as conference rooms, halls or gymnasiums. Key points for selection
The main control parameters for unit selection include 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 building envelope and the heat generated inside 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 subtract 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 unit 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, you should consider the deviation between the actual performance and the rated value and pay attention to the following characteristics
) 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
) Only with 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. The main products of Texas Grid Air Conditioning Division include fan series (smoke exhaust fan, fire exhaust fan, diagonal flow fan, mixed flow fan, duct fan, roof fan, induction fan, fresh air ventilator, fiberglass low-noise roof fan series, low-noise roof fan, axial flow fan ventilator Centrifugal fan) fan coil series (fan coil air conditioner horizontal exposed fan coil concealed fan coil fresh air unit air conditioning unit air handling unit) air valve series (fire damper smoke exhaust fire damper regulating valve multi-leaf split adjustment Valve check valve, fire damper, remote control fire damper, fire damping regulating valve) cooling tower series (square counterflow cooling tower, square crossflow cooling tower, round cooling tower) water tank series (water tank, stainless steel water tank, molded water tank, glass fiber reinforced plastic water tank, galvanized plate water tank, hot dip galvanized Water tank) silencer series (muffler static pressure box micro-perforated silencer short arm silencer elbow) air duct (galvanized plate air duct iron sheet air duct common plate flange air duct white iron air duct glass fiber reinforced plastic air duct) air outlet series (double-layer louver Air outlet Aluminum alloy air outlet Single-layer louver air outlet Self-vertical louver air outlet Swirl air outlet Ground source heat pump