Horizontal dark outfit fan coil units; fan coil units;fan
A new generation of horizontal dark outfit fan coil units
1. Choose the main control parameters of air volume, export static
pressure rating, the input power, rated cooling capacity, rated
heating capacity, noise, water resistance, etc.
2.Fan coil unit air volume about 250~2500m/h,export static pressure
is less than 100 pa (export static pressure greater than 30 pa for
high static pressure type).
3.Choose the unit air should be cooling cap and heating cap as well
as the hot wet than factors such as air:
1).When the fresh air and room air parameters, fan coil units only
burden produced inside palisade structure and room of cooling cap
and heating cap ;
2).When fresh air is greater than or less than the room air , fan
coil units must be added or deducted part of the air cooling cap
and heating cap .
3).when the absolute moisture content of air is lower than the room
air moisture content, can be all burden it moisture load, fan coil
units can only afford room sensible heat load, should according to
the working condition of dry configuration;
4).When the room according to heat load a large proportion, should
be through the heat balance calculation, checking air volume of fan
4.Air under the high-grade speed of basic specifications should
comply with the provisions of the table 1 and table 2.
|Rated Cooling Capacity(kW)||Rated Heating Capacity(kW)|
5.Should be considered when choosing the air, the deviation of the
actual performance and the rating and pay attention to the
1).Air rated cooling capacitr general is in air value is equal to
15.9 kJ/kg value under the condition of test
2).Single coil units rated heating loads are generally rated 1.5
times the amount of cooling
3).rating of the various parameters for the value of the fan under
high speed design general appropriate according to the product
sample of middle-grade wind speed value is chosen.If the product
fails to provide the rating data under the different wind speed,
the conversion can be refer to table 3.
Air volume scaling factor
|rating catagory||High-grade wind speed||Mid-range wind speed||Low Wind Speed|
6. For a dual-control system (applies only for the season or only
for the air conditioning for heating or cooling air conditioning
system to convert) fan coil units, only configure a set of coils,
heating/cooling in summer and winter and mills. Four-pipe water
system (suitable for frequent conversion of heating/cooling air
conditioning system) fan coil units, you should configure two
groups of heating and cooling coils combined models.
7. low temperature, thermal storage air conditioning system, should
select the temperature unit.
8.the fan-coil units have the following control types:
1). With a three-speed selector switch, winter and summer
transition, even at room temperature controller, water electric
valve, implementing automatic control;
2). with three-speed selector switch, winter and summer transition,
even at room temperature controller fan on/off and implement
3). with only three speed selector switch, the implementation of a
4). fan speed control.
fan speed control.
According to the requirements of the relevant standards, electric
temperature control valves and three wind speeds should be used
with the control.
9.Should be paid attention to when choosing products, noise,
condensation and motor quality three questions.This is the current
sampling, quality problems more projects.
10.The method for computing the fan coil units at home and abroad,
design selection and should pay attention to the difference.
Matters needing attention
Construction and installation key points
1.Unit at the entrance of water, shall be installed filters.When
flush the refrigerant water system main, sewage through the coil is
not allowed.Coil over the highest should set exhaust, low should
set drainage device.
2.The fan coil units of condensed water discharge pipe must have a
certain slope, should guarantee the drip tray is not water.
3.The installation of fan coil units can see national building
standard design atlas 01 k403 "fan coil installation"