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Installation and Connection
Condensation may occur when the incoming water temperature is too lower than the ambient temperature. The
water temperature to avoid condensation varies according to the air relative humidity and ambient temperature.
The temperature at which the water vapor contained in the air turns into liquid as small water drops is known as
"dew point".
Table 3.7 on page 3-12
for an atmospheric pressure of 1 atm. If the water temperature is lower than the presented value, condensation
may occur.
3
10 °C (50 °F)
20 °C (68 °F)
25 °C (77 °F)
30 °C (86 °F)
35 °C (95 °F)
40 °C (104 °F)
45 °C (113 °F)
ATTENTION!
The water temperature must always be higher or equal to the dew point.
3.2 ELECTRICAL INSTALLATION
DANGER!
The following information is intended to be a guide for proper installation. Comply with applicable
local regulations for electrical installations.
DANGER!
Make sure the power supply is disconnected before starting the connections.
ATTENTION!
The CFW11W G2 can be connected to circuits with short-circuit capacity of up to 100000 symmetric
Arms.
ATTENTION!
The short-circuit protection of the inverter does not provide short-circuit protection for the feeder
circuit. The short-circuit protection of the feeder circuit must be provided in accordance with the
applicable local regulations.
3-12 | CFW-11W G2
shows the dew point in relation to the air relative humidity and to ambient temperature
Table 3.7: Dew point in relation to the air relative humidity and ambient temperature
5 %
10 %
20 %
<0
<0
<0
<0
<0
<0
<0
<0
0.5
<0
<0
4.6
<0
<0
8.7
<0
2.6
12.7
<0
6.3
16.8
Air Relative Humidity
30 %
40 %
50 %
60 %
<0
<0
0.1
2.6
1.9
6
9.3
12
6.2
10.5
13.8
16.7
10.5
14.9
18.4
21.4
14.8
19.4
23
26.1
19.1
23.8
27.6
30.7
23.4
28.2
32.1
35.4
70 %
80 %
90 %
4.8
6.7
8.4
14.4
16.4
18.3
19.1
21.3
23.2
23.9
26.2
28.2
28.7
31
33.1
33.5
35.9
38
38.2
40.7
43
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Troubleshooting
