14 Technical data
Installer reference guide
83
EWAQ+0 EK(2)CB
EKMB9W1
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P492901-1 – 2017.06
14.4
Valve kit necessity
For reversible systems (cooling) in which a backup heater is installed, the installation of valve kit EKMBHBP1 is required if
condensation is expected inside the backup heater.
7
10
13
16
19
22
25
28
31
7
10
13
16
19
22
25
28
31
20
23
26
29
32
A (°C)
A (°C)
B (°C DB)
A
Leaving water evaporator temperature
B
Dry-bulb temperature
Relative humidity 40%
Relative humidity 60%
Relative humidity 80%
Example:
Given are an ambient temperature of 25°C and a relative
humidity of 40%. If the leaving water evaporator temperature is
<12°C, condensation will occur.
Note:
See the psychrometric chart for more information.
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