Summer Bypass
The Duplexvent BV400 unit is fitted with a bypass facility as standard. This can be used for
keeping indoor air temperature at a comfortable level.
If the house indoor air temperature is hotter than the unit temperature sensor setting (factory set
at 22°C), with the incoming air temperature lower than the indoor air temperature, the bypass
damper will open. This will tend to lower the indoor air temperature until it reaches the set
temperature level (22°C).
Volt-free
connection
for boost
Switched live
connection
for boost
2
1
UNIT-OK UNIT-FAULT UNIT-RUN
Page 20 of 32
The factory set can be changed on pro panel screen.
Outdoor air temperature
Indoor air temperature
Set temperature
1. Press for coming to marked area
the site.
3. Press for activate of changing the
set value.
2. Press and for selecting the “S”.
4. Press and for changing the set
temperature.
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