Parameters / Function Description - Wolf BML Operating Instructions Manual

Parameter description
Hysteresis OFF
LM013
Factory setting: 1 K
Range: 0 - 3 K
Minimum fan speed
LM015
Factory setting: 30 %
Range: 5 - 60 %
Maximum fan speed
LM016
Factory setting: 70 %
Range: 25 - 100 %
P component
for speed control
LM017
Factory setting: 10
Range: 1 - 20
Ratio of extract air/
supply air fan speed
LM018
Factory setting: 93
Range: 50 - 150
Weather-compensated
summer shutdown
LM020
Factory setting: OFF
Range: ON/OFF
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Parameters / Function description

The specialist parameters listed in the table in the last section
are described in detail below.
The column on the left shows the designation of each
parameter and its number.
Not all parameters listed in the table will be present in every
system configuration.
The heating control by temperature stops if the currently
actual room temperature or extract air temperature exceeds
the set temperature by the Hysteresis OFF value.
Min. speed "n-min" (minimum output voltage)
Setting (if required) of a minimum output voltage, i.e. a base
speed (minimum air change) for the connected fans which
must be maintained during temperature control and CO
control.
Never set below 30 %!
Max. speed "n-max" (maximum output voltage)
Setting (if required) of a maximum output voltage, i.e. a speed
limit (to prevent excessive air noise) for the connected fans
which must not be exceeded during temperature control and
CO control.
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The P component for speed control determines how sharply
the output signal of the Analogue output is modified in
proportion to a control deviation. (0-100 %)
If the P component is set low, the control unit responds more
quickly.
If the P component is set high, the control unit responds more
slowly.
In order to run air handling systems so that positive or
negative pressure is created in the room, the speeds of the
supply air and extract air fans must be set differently.
Setting LM018 at 100
LM018 at > 100
LM018 at < 100
By enabling this parameter, the system can be switched on
and off according to the outside temperature.
The system must be connected to an outside temperature
sensor for this function to be available (see "Additional
functions"). In the control panel, disconnect the internal wires
across terminals X2 21/22 and connect the external outside
temperature sensor.
Enable this parameter only if you are replacing an
internal temperature sensor with an outside temperature
sensor one.
→
parallel operation
→
negative pressure
→
positive pressure
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