Maico GRD 22, Mounting And Operating Instructions, Page: 21 / 28

17
Start-up
 Ensure that the fan is correctly connected
and that the air can flow unhindered.

Switch on ventilation system with separate
on/off switch. The following information
appears on the control unit display
- the current volumetric flow in m³/h,
– the atmospheric air pressure in Pa
– the alarm display (if activated)
 Press and the hold the SETUP button [20]
until the text SETUP appears in the display.
 Check that the fan impeller is running
quietly.
10. SETUP (
only for trained
specialists
)
 Ensure that the fan is correctly connected
and that the air can flow unhindered.

Remove the housing cover, in order to start
the SEUP menu.
 Press and the hold the SETUP button [20]
until the text SETUP appears in the display.
Here, you can activate and modify the setting
values (see CAs menu and CPs menu
tables).
Selection values (Y/N) and input values
(0...9) can be modified using the arrow keys

and

. A value is confirmed with ENTER and
the next menu item appears.
Input values made up of more than one digit
have to be confirmed after each digit with
ENTER.
Notes
● The CAs menu or the CPs menu appears,
depending on the setting.
● Always carry out SETUP completely. If
necessary, press ENTER as many times as
is necessary, until the operating display
appears again.
● Pressing SETUP quits the Setup menu
directly. The operating display appears.
● In the case of an alarm display indicated by
the LED [15] showing red, press and hold
the RESET button until the LED goes out.
● The alarm display flashes red during the
initialisation phase that follows switching
the mains fuse on.
CPs menu
Display or
selection
value Description
LANGUAGE?
x Selected language
(D, GB or F)
FAN TYPE
GRD xx Selected fan (GRD 22,
GRD 25 or GRD 31)
WORKING
MODE xxx Select CPs working mode.
(CAs or CPs)
Pa K1?
xxxx Define setpoint for constant
pressure, e.g. for daytime
operation (only if switching
contact K1 has +12 V applied).
Pa K3?
xxxx Define setpoint for constant
pressure, e.g. for nighttime
operation (only if switching
contact K3 has +12 V applied).
END
CONFIG SETUP menu ends. The
operating display appears.
Tab. 2: CPs menu items
CAs menu
Display or
selection
value Description
LANGUAGE?
x Selected language
(D, GB or F)
FAN TYPE
GRD xx Selected fan (GRD 22,
GRD 25 or GRD 31)
WORKING
MODE xxx Select CAs working mode.
(CAs or CPs)
m³h K1?
xxxx Define setpoint for constant
volumetric flow, e.g. for
daytime operation (only if
switching contact K1 has
+12 V applied).
i
GB