S E R V I C E M E N U : “ A L A R M ”
In this menu alarm limits is set for
Filter timer, Low temperature
and setting for
Fire sensor, Automatic reset
and
Alarm indication
to the alarm port.
”
Filter timer
” can be set from
”Off”
to
”6-12 months”
and generates alarm for filter change.
Filter timer can not be used in combination with another filter measurement, see page 16.
We recommend filter change at least once a year.
To restart the filter timer press “
Reset
” with the -key.
Alarm limits for ”
Low temperature
”.
Alarm limit A
: (+2 to +10ºC/+36° to +50°F) but must be lower than ”Alarm limit B”).
Alarm for low rotor temperature is displayed when the temperature is lower than set value. Normally nothing
needs to be done. If “Rotor Alarm” appear at the same time as “Rotor temp. Low” the unit is stopped.
Alarm limit B
: Supply air flow is reduced with one step when the temperature in supply air duct (GT7) is
lower than set value, the temperature efficiency will increase (the temperature can be change from
+5 to +12ºC/+41° to +54°F but have to be higher than ”Alarm limit A”).
If the unit operating at Min. speed the extract air increases one step.
In menu ”
Fire sensor
” type of installed fire sensor is set.
Choose ”Normally open” NO or ”Normally closed” NC depending on
the type of smoke detector.
"Automatic reset"
allows a automatic restart of the unit after
the fire alarm is restored to normal (NO, NC).
In the menu
”Alarm indication”
, the alarm can be associated to the alarm
port on the control board (NO,NC).
If all is choosed this is indicated by
"All"
. If only one or more is selected
this is indicated by
"Selected"
.
A
Auto.reset: Off
Aut. reset: Off
N
Not installed
Auto.reset: On
A
Alarm indication
None
Alarm indication
Fire alarm
Sensor open
Sensor shorted
A
Alarm indication
Fire alarm
Sensor open
Sensor shorted
A
Alarm indication
Overheating
Freese alarm
Supply temp. low
A
Alarm indication
Rotor temp. low
Fan failure
Rotor failure
A
Alarm indication
Rotor failure
Filter
Filter timer
A
Alarm indication
All
A
Alarm indication
Selected
R
Reset
Overpressure
Max temperature
36°F
54°F
36°F
54°F
36°F
54°F
18
