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E46 Climate Control
Stratification (Temperature Intervention) E38 only
The mixing flaps will open less in the direction of heat for blending air as the solar influence
increases. The graph below represents the influence of the solar sensor on the stratification
flap settings
To illustrate the influence of the solar sensor on the mixing flap position, the Y factor remains
constant at 20%.
With a solar influence of 0% curve “A” is adopted for the various outside temperatures. As
the outside temperature decreases, the mixing flap is moved toward the warmer setting
blending more heat.
With a solar influence of 100% curve “B” is adopted for the various outside temperatures.
As the outside temperature decreases, the mixing flap is still moved toward the warmer set-
ting but it does not move as far. The solar influence is compensating to provide the same
comfort level.
With the mixing flap thumbwheel at 100 or 0% (full hot or cold), the flaps are in the default
position and there will be no solar influence.
The left and right mixing flaps are controlled independently based on the individual settings
and left and right solar sensor inputs.
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