Configuration Manual

Version Document
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001
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ccess V4.X Configuration manual
7 (56) 2018-07-11
 Extract air cascade]
 Outdoor dependent supply air or room
 Outdoor dependent supply air or extract air
 Outdoor compensated room cascade
 Outdoor compensated extract air cascade
 Extract air depending supply air
The supply air temperature is kept at the setpoint value by controlling the output
signals for "Heating (Sequence-A)", "Exchanger (Sequence-B)", "Cooling
(Sequence-C)", "Heating 2 (Sequence-G)” and “Cooling 2 (Sequence-H). Up to 10
sequences (Sequence-A..J) with separate PID control settings for each sequence
can be used.
A neutral zone can be set around the setpoint value.
Example:
If the setpoint is 18 °C and the neutral zone is 2 K, the cooling setpoint will be 19
°C and the heating setpoint will be 17 °C. If the supply air temperature is in the
neutral zone, the heating and cooling will be blocked. If the supply air temperature
decreases below the setpoint –NZ/2 the heating signal will be active until setpoint
is fulfilled. If the supply air temperature increases above the setpoint +NZ/2 the
cooling signal will be active until setpoint is fulfilled.
The setpoint value is set using the NaviPad or alternatively using an external
setpoint device. Alarms which are activated when the supply air temperature is too
high or too low are active. Alarm for control offset of the supply air temperature is
active.
Supply air
The supply air temperature is kept at the setpoint value by controlling the output
signals. The controller is reverse acting, i e. the output will increase for decreasing
temperature.
Outdoor compensated supply air
The supply air temperature setpoint is outdoor temperature compensated using a
control curve with 4 node points.
Room cascade
Cascade control of room temperature and supply air temperature to achieve a
constant, settable room temperature. The room controller output signal generates
the supply air controller’s setpoint value. The room controller used an own PI
loops.
1..4 room sensors can be connected. If 2..4 sensors are connected, the average of
their values will be used.
Extract air cascade
Cascade control of extract air temperature and supply air temperature to achieve a
constant, settable room temperature. The extract air controller output signal
generates the supply air controller’s setpoint value. The extract controller used an
own PI loop.
Outdoor dependent supply air or room
Outdoor temperature dependent switching between supply air temperature control
and room temperature control.