SystemAir Danvent DV, Приложение к руководству пользователя

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Annex 10—5
10.20 Cooling capacity and absorbed power consumption in kW for compressor ‐ EER
factor
Cooling capacity and absorbed power consumption data is listed in the table below for calculation of the
energy performance of the building. Cooling capacity and absorbed power consumption are listed for 3
levels – minimum – medium – and maximum revolutions for the cooling compressor when the evaporation
temperature is 10 °C and condensation temperature is 50 °C. Maximum cooling capacity at nominal air flow
when supply air flow is equal to exhaust air flow, outdoor 28 °C/50% r.H., indoor 25 °C/50% r.H. and supply
air 18 °C/90% r.H..
Cooling capacity in kW/absorbed power consumption in kW and EER ‐ value – all at nominal air volume
DVU ‐ 10 DVU ‐ 15 DVU ‐ 20 DVU ‐ 25 DVU ‐ 30 DVU ‐ 40
Minimum – 35 Hz 5.6/1.2 ‐
4.5
7.7/1.9 ‐
4.1
11.5/2.2 ‐
5.2
15.7/3.3 ‐
4.7
18.5/3.8 ‐
4.9
23.2/4.5 ‐
5.1
Medium – 60 Hz 8.9/2.3 ‐
3.8
12.4/3.4 ‐
3.7
18.5/4.3 ‐
4.4
27.5/7.1 ‐
3.9
29.6/7.1 ‐
4.2
39.7/9.4 ‐
4.2
Maximum – 90 Hz 11.1/3.7 ‐
3.0
15.7/5.4 ‐
2.9
23.3/6.9 ‐
3.4
33.8/11.1 ‐
3.0*
36.7/11.3 ‐
3.2*
47.3/13.2 ‐
3.6
*85 Hz
The minimum capacity is selected at the frequency converter output at 35 Hz (the compressor in the DVU
20, 25/30 and 40 can reduce the capacity further to even lower revolutions at 30 Hz). At the lowest
revolutions the hotgas valve opens to reduce the capacity further – the lowest cooling capacity equals 10 %
of the capacity at 90 Hz. If the temperature and humidity conditions on the site deviate from the above ‐
mentioned conditions, accurate values can be calculated in the design programme SystemairCAD.
Systemair is ready to provide you with a print ‐ out, if a copy of calculation of the specific unit in the
SystemairCAD is not available.
10.21 Power consumption for the fans
The unit section ‐ DVU ‐ is one of several sections in the air handling unit, and the supply air fan for the
evaporator as well as the exhaust air fan for the condenser, heat recovery and heating coil are installed in
other sections. The energy performance for the complete unit including the consumption of the fans is
always calculated in the design programme SystemairCAD. Systemair is ready to provide you with a print ‐
out, if a copy of the calculation of the specific unit in the SystemairCAD is not available.
10.22 Data plate
The data plate for the cooling unit is mounted inside the unit section – DVU – behind one of the doors. An
example of the data plate is shown below.
DVU ‐ 40
Manufaturing year
Serial Number:
Refrigerant 407C
Quantity of refrigerant 9.8 kg
Compressor Danfoss VTZ171
Supply voltage 3*400 V + N + PE
Running load ampere 31.5 A
Main circuit breaker 35 A
Short circuit level min 1,0 kA
Short circuit level max 7,3 kA
Max working temperature 55°C
Min working temperature ‐ 40°C
Max working pressure 26 bar
Testing pressure 28.6 bar