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Control
6. Via the signal wiring from the external BMS, select the 0–10 V demand control functionality as
7
82
follows:
Input
Demand (% of
Indoor unit
Voltage* (V)
nominal current)
start / stop
0
No cut
Stop
1
0.6 –1.0
40
Start
1.1 –1.5
45
Start
1.6 –2.0
50
Start
2.1 –2.5
55
Start
2.6 –3.0
60
Start
3.1 –3.5
65
Start
3.6 –4.0
70
Start
Note:
The control system is based on the rule that the last command within a sequence always takes
precedence over the previous commands. In order to avoid unexpected control behaviour in
a system where both 0-10 V demand control signals and digital input signals are being used,
it is essential to ensure that the DI signals are applied BEFORE applying the demand control
signals.
Input
Demand (% of
Voltage* (V)
nominal current)
4.1 –4.5
75
1
4.6 –5.0
80
5.1 –5.5
85
5.6 –6.0
90
6.1 –6.5
95
6.6 –7.0
100
7.1 –7.5
105
7.6 –8.0
110
Indoor unit
Input
Demand (% of
start / stop
Voltage* (V)
nominal current)
Start
8.1 –8.5
115
Start
8.6 –9.0
120
Start
9.1 –10.0
No limit / Full
capacity
Start
1 No cut/Stop: AHU system / indoor unit is
Start
completely switched of.
Start
2 No Limit: No restrictions applied by BMS to AHU
Start
system / indoor unit performance (equivalent
Start
to "full-load operation" of AHU system / indoor
unit).
AHU Kit – Installation Instructions – 07/2023
Indoor unit
start / stop
Start
Start
Start
2
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