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We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
Calling up preset program
Part 1 of the controller maunual, program area “Service“, sec-
tion “Calling up preset program“.
Determining temperatures
The menu is not shown in full here.
NOTE
If 2 heat pumps are connected, note the number displayed in
the top menu row. It provides information about which heat
pump is currently addressed.
In order to change the addressed heat pump: page 11,
“Changing the addressed heat pump in submenus“
Limit Return
Return limit
Setting the maximum return setpoint temperatures in
heating mode.
X
External temperature
Y
Return temperature
A
Heating curve-end point
B
Return limit (in the example shown: 40 °C)
MAKING SETTINGS
Determine data access
Enter numbersn
entry fields of the four digits numerical code (9445 =
Access: Installer):
Activate the first entry field of the numerical code by
pressing the “turn-push button“.
Set the first digit by turning the “turn-push button“ and
confirm the entry by pressing the button.
Move to the respective next entry field and repeat the
steps described above.
Finally, move to and save the entries by pressing the
“turn-push button“.
The entry fields are automatically set to 0000. The cursor
goes automatically to the navigation arrow. The program
provides information in the menu line “Access” on the se-
lected status of the data access.
Datea access
Information on the current status of the data access
(here: user)
IMPORTANT
Incorrect program settings that are not aligned to the sys-
tem components can cause malfunctions or even serious
damage to the system. Therefore, access to basic settings
of the system via the installer password 9445 may only be
carried out by qualified technicians and must be blocked
for unauthorised persons.
After service work, it is essential to reset the data access to
“User” (enter and save number code 0000).
NOTE
The manufacturer is not liable for damage resulting from
wrong program settings not oriented towards the system
components.
If the “rotary pushbutton” has not been used for 3 hours, data ac-
cess is automatically reset to “User”.
