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HR M
ANUAL
422
(0.3)
Manual setting of the strength
REGISTER ADDRESS
DESCRIPTION
275
(1)
Select modes
425
(0.6)
Automatic or manual control
Manual version 3.0 (10-10-2017)
O
PERATION OF THE BUILDING MANAGEMENT SYSTEM
In the manual mode, the strength can be set manually.
VALUE
0
1 - 49
50 - 79
80 - 100
Note:
n
For minimum energy consumption, Biddle
recommends selecting the lowest strength at which
the desired air quality is achieved.
4.1.3 Automatic operation
The unit can only be controlled automatically if the functions
below have been set as follows:
VALUE
2 = allowed: automatic
3 = allowed: manual, automatic
1 = automatic
4.1.4 Automatic CO
control
2
The unit automatically adjusts the fan speed (and any recircula-
tion damper) to the CO
level.
2
The CO
level is supplied by the building management system
2
(BMS) or, if this information is not available, by a CO
(accessory) on X377 (via connection X3).
Fan speeds with stepped controls
CO
2 LEVEL
< 1
without recirculation module
with recirculation module
< 2
< 3
> 3
(BMS)
FAN SPEED
0%
35%
65%
95%
sensor
2
FAN SPEED
0 (off)
1
1
2
3
en-49
en
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