AERMEC TDA 09, Selection, Installation, Use And Maintenence Manual, Page: 15 / 116

15
The following pages are related
to the tables concerning the
performance of the heat exchange
coils for the typical combinations of heat vector fluid temperature and
hygrothermometric characteristics of
the incoming air.
The values for the direct expansion coils refer to operation with R407C
refrigerant.
Key:
P Air flow rate [m³/h]
Tia Temperature of incoming air [°C]
UmRel Relative humidity (%)
Qtot Total heating capacity [kW]
Qsen Sensible heating capacity [kW]
WtrFlow Water flow rate [l/h]
WtrDP Water side pressure drops [kPa]
RefrDP Refrigerant side pressure drops [kPa]
Tables showing heat exchange coil output
Electric heat exchange coils
TDA 09 TDA 15 TDA 21 TDA 28 TDA 37
Electric coil output kW 4 6 8 10 12
Voltage - Phases V - n. 230V~ 400V / 3 ~ 400V / 3 ~ 400V / 3 ~ 400V / 3 ~
No. of stages no. 1 1 1 2 2
Table showing operating limits
Temperature of coil inlet air (summer)
min 21 °C
max 34 °C
Temperature of coil inlet air (winter)
min -5 °C (*)
max 24 °C
Relative humidity (summer-winter)
min 20%
max 90%
Temperature of coil inlet water (H
2
O Cold)
min 4 °C
max 12 °C
Heat range (H
2
O Cold)
min 5 °C
max 8 °C
Temperature of coil inlet water (H
2
O Hot)
min 40 °C
max 80 °C
Heat range (H
2
O Hot)
min 5 °C
max 25 °C
Evaporation temperature
min 2 °C
max 12 °C
(*) envisage anti-freeze protection
Air conditioning unit -
TDA range
Selection, installation, use and maintenance manual