CorroVenta A15ES, User Manual

Page: 18 / 67

A15ES
© Corroventa Avfuktning AB 2022.05 18 (67)
Adjusting air flow balance
Note: This feature is optional and not present on all machines.
For optimum performance and dehumidification, at every new installation, the actual operation
point of the machine shall be checked and if necessary, the respective fan speeds adjusted to
compensate for the pressure drops of the ducting. To this purpose, available through the Capacity
Mode menu, there is an adjustment guide graphically presenting the current operation point and
supporting the user in the adjustment.
The capacity modes implemented with the machine are defined with fan speeds suitable for
installations with limited ducting, situations where none of the air flows are subjected to significant
pressure drops which reduces the fan capacities. A lowered regeneration air flow will also lower heat
generated by the PTC heaters which in turn reduces the capacity and the intent of the adjustment
menu is to allow for the user to, if required, adjust the fan speeds to compensate for the ducting and
if necessary, increase the regeneration air flow and thus the capacity. Doing so also comes with
benefit that process air flow can be increased while still maintaining proper and correct pressure
balance between the air flows.
Before adjustment is undertaken, ensure that the machine has been allowed to operate with
intended capacity mode for at least 10 minutes, preferably more, so that it has warmed up and the
power consumption of the machine has stabilized. The regeneration heaters of the machine are of
PTC type which means that the initial power consumption is higher than what is during normal
operation when the machine interior is warmed up. Adjusting the operation too early can thus cause
the user to do incorrect adjustments resulting in a strongly deviating operation point.
How to go about it?
To commence the adjustment, step right in the menu tree using the upper right button until the
Capacity mode screen with the below depicted appearance is reached. In this menu, where selected
capacity mode also is presented, there are two horizontal indicators, one for the regeneration air
flow and one for the process air flow. Each of them is provided a setpoint with dash dotted line and
tolerances indicated with dashed lines. Current actuals are indicated with diamonds shaped symbols.
In the example above, the machine is operating in Max mode and both indicators are currently
outside their allowed intervals. To adjust the operation, push Change and then confirm the selection
of Max mode.