7
Subject to technical modifications of Optima 100
6 months
Hold the button B4 down for more than 10 seconds, until
LED D1 begins to flash.
Then press button B5 five times until LED D2/D5 begin to
flash. Then press button B4 to confirm the setting and to
return to the main display.
NB: If there is a filter alarm, the filter timer
cannot be set. The filter timer must be reset
first, before, it can be set again.
3.4. Bypass
Systems that are supplied with a bypass can operate in a
so-called summertime mode. The outlet air is let outside
the heat recovery circuit in the unit via a valve, so that
there is no heat recovery. The temperature of the air that
is let into the house is, thus, not heated, but corresponds
with the temperature of the air outside.
The bypass function must be manually activated via the
display. This is done as per the following:
Bypass ON:
Do a short press on button B5, so LED D5 stays on.
Bypass OFF:
If LED D5 is constantly on, do a short press on button
B5 until D5 turns off. Bypass is OFF, if LED D5 is not
constantly on.
3.5 Electrical Heating
Electrical heating can either be accomplished by a pre-
heating or post-heating element.
A pre-heating element ensures that the heat recovery
circuit does not freeze with very low outdoor air
temperatures.
A post-heating element further heats the inlet air after
it has been heated via the heat recovery process in the
system.
The heating element must be activated manually via the
display. This is done as per the following:
To activate the menu, hold the button B5 down for more
than 10 seconds, until LED D1 begins to flash or the LEDs
D1/D2 flash at the same time.
Electrical heating ON:
LEDs D1/D2 flash at the same time
Electrical heating OFF:
LED D1 flashes
Press button B5 for a short period to change between ON
and OFF.
Press button B4 to return to the main menu.
3.6 Restoring the factory settings
If the set points that are installed result in the system not
operating as expected, and the cause cannot be found,
the factory settings can be restored as follows:
During start-up of the system hold B4 down so that all
five LEDs are flashing. As soon as all five LEDs stay
constantly on, the button B4 can be released, and the
system’s factory settings are restored.
3.7 Set points´ table
Text:
Factory
settings:
Installed
settings
1
Inlet airflow rate 1 (0-100%)
25
2
Inlet airflow rate 2 (0-100%)
50
3
Inlet airflow rate 3 (0-100%)
75
4
Outlet airflow rate 1 (0-100%)
25
5
Outlet airflow rate 2 (0-100%)
50
6
Outlet airflow rate 3 (0-100%)
75
7
System Stop
OFF
8
Timer level 4
OFF
9
Timer level 4
3
10 Filter change
3
11 Filter stop
OFF
12 Frost protection
ON
14 Frost protection
1
15 Extra heating
OFF
16 Extra heating
0
17 Menu On
ON
Hard-coded:
Level 4 inlet, 100%
Level 4 outlet, 100%
Hygrostat, as per Optima 250.
