ZoningBOX 6 / ZoningBOX 4
Technical Support:
21
Percentage
Object Value
DPT_Scaling
Value
Fan Speed
0
0
Ignore Order
1
– 33%
1 - 85
1
34
– 67%
86 - 170
2
68
– 100%
171 - 255
3
Table 5.
Percentage fan control
– three speeds
For all the aforementioned objects (with the exception of the step-control object)
an
analogous status object
is available, making it possible to request the current fan
speed at any time, even during the automatic control.
On the other hand, the air flow generated by each HVAC unit can
be limited
according to the number of open grilles
. Therefore, it is possible to parameterise:
Whether the minimum fan speed (speed 1) should be forced if the number of
open grilles is found to be lower than a certain value and a speed fan level
above speed fan level 1 (speed 2 or higher) has been settled through object.
Only under a three-speed configuration: whether the medium fan speed
(speed 2) should be forced if the number of open grilles is found to be lower
than a certain value (different from the above one) and also, a fan speed level
higher than speed fan level 2 (speed 3) has been settled through object. In
case a fan speed level lower than fan speed 2 (speed 1) is settled by object,
the final speed will be speed 1.
In both cases, if a speed level is settled over the set level, when grilles
number open will be higher than threshold to force a certain speed, the
request speed will be stablished.
