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Access 4.x |
Support control |
Support control function maintains room temperature during scheduled "Stop" period.
If during "Stop" hours the room temperature deviates off preset limits - the AHU is started for heating or cooling.
Support control function requires room temperature signal to operate.
It is possible to heat / cool recirculated room air instead of fresh air if the AHU is recirculation capable.
Use of extract air fan can also be enabled if position of the fan placement makes it reasonable.
Settings and configuration Support control |
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Variable |
Available options & Selection |
Note |
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Activate support control function |
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Configuration > Functions > Function activation |
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Support control |
| Yes | No | |
- |
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Activate room sensor |
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Configuration > Functions > Temperature control |
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Room temperature sensor |
| No | 1 | 2 | 3 | 4 | |
- |
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Configure inputs |
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Configuration > I/O allocation settings > Analog inputs > |
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Room temperature 1 |
Any available I/O |
- |
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Activate recirculation & extract air fan (optional) |
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Configuration > Functions > Support control |
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Recirculation during support control |
| Yes | No | |
Enable only if available and reasonable to run |
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Extract air fan running during support control |
| Yes | No | |
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Operational settings |
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Data & Settings > Demand control > Support control |
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Support control mode |
Off | Active heating | Active cooling |
Indication of function status |
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Min time for support control |
[20] min |
Minimal run time for heating or cooling |
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Room temperature |
__ oC |
Actual room temperature |
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Start heating room temperature |
[15] oC |
Heating will start if room temperature drops bellow 15 oC. Heating will stop then 21 oC temperature is reached and minimal time for running has passed. |
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Stop heating room temperature |
[21] oC |
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Setpoint heating |
30 oC |
Max limit supply air is used as heating setpoint |
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Start cooling room temperature |
[30] oC |
Cooling will start if room temperature rises above 30 oC. Cooling will stop then 28 oC temperature is reached and minimal time for running has passed. |
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Stop cooling room temperature |
[28] oC |
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Setpoint cooling |
12 oC |
Min limit supply air is used as cooling setpoint |
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