37
Ubiflux W300(+) / W400(+) / W450(+)
Ubiflux W300(+) / W400(+) / W450+
38
Electric connections accessories
Chapter 11
11.5 Connection example geo heat exchanger (only possible for the U)
A geo heat exchanger can be connected to the
U.
A geo heat exchanger can be connected to connec
-
tion no. 5 (GND) and no. 9 (+) of 9-pole connector
X15; this 9-pole connector is directly accessible at
the rear of the top without having to dismount the
display cover.
When the geo heat exchanger is connected, it is
not possible any more to connect a postheater to
the Ubiflux!
When using a geo heat exchanger, parameter 27
must be changed from “OFF” to “ON”. When the
air is routed through the geo heat exchanger, the
U display shows the text “EWT”.
Step
no. Description
Factory
setting
Range
27 Switching on geo
heat exchanger
OFF
ON =
Switched on
OFF =
Switched off
28
Minimum tempe
-
rature geo heat
exchanger
5°C
0 - 10°C
29
Maximum tempe
-
rature geo heat
exchanger
25°C
15 - 40°C
I = To dwelling
II = To atmosphere
III = From dwelling
IV = From atmosphere
15°C
10°C
3°C
0°C
Ⅰ
Ⅲ
Ⅱ
Ⅳ
Ⅳ
Ⅰ
Ⅲ
Ⅱ
Ⅳ
Ⅳ
Bypass
Bypass
A
30°C
25°C
Ⅰ
Ⅲ
Ⅱ
Ⅳ
Ⅳ
Ⅰ
Ⅲ
Ⅱ
Ⅳ
Ⅳ
Bypass
Bypass
B
A = Min. temperature
B = Max. temperature