AFTERHEATING AND SUMMER BYPASS OF INLET AIR
Machine has a Triac controller operated with 500 Watt
heated inlet air of electric post-heating.
The temperature of inlet air is usually regulated to + 16
o
C
The temperature may be adjusted to higher duging winter
so there woud be no feeling of draft. In case of severe frost and
efficiency mode the heating power might turn out insufficient
in such circumstances, the air exchange should be reduced.
The overheating protection launched during malfunctioning
must be annulled manually.
SUMMER BYPASS
For the summertime exhaust air is directed past the HR cell
with manual summer bypass, so the exhaust air will not
warm up the outdoor air.The summer bypass is controlled
according to the temperature of the outdoor air
incoming to the machine.The basic regulation is about +15
o
C
CONDENSING WATER AND FREEZING PREVENTION
When outlet air freezes, the humidity in heat exchanger
turns into water, flows down to the condensing basin and from
there, through the hose and water-lock, into the open drain.
During very cold weather the water would freeze in to the
exchanger unless the anti-freezing thermostat stops the intlet air
impeller for the fusion period.
There is double protection against freezing in DIVK-C91C.
If necessary pre-heating warm up the outside air and/or
anti-icing termostat will use supply fan as in cycles during
thaw cycle.
The frost protection temperature measured in the exhaust
air temperature.
The basic regulation for frost protection is about +5
o
C
Preheater turns on when the exhaust air temperature
fall to the setpoint. The supply fan shuts down if the
exhaust air temperature falls to 5 degrees lower than
the set valut. The preaheater can be coupled off by setting
the set value +10
o
C when the supply fan is switched off +5
During very cold weather and when there is higher humidity
there can be ice formation in the heat exchanger. If such a case occurs,
setting the value (clockwise) obtained by raising the defrost cycle
to start earlien.
The setpoint can reduces In the dry conditions (e.g. office) if necessary.
7
REMOVING THE FAN
The fans can be removed for cleaning or replacement.
Before removing the fan, remove the HR cell and filters.
There is a cover plate in the front of the fan, remove it by removing
the screws, 2 pcs.
Unplug the fan plug connector.
The fan is removed from the housing with end plate.
The fan cover plate
screws
OVERHEAT PROTECTIONS
.
The overheat protection has been activated in case
the temperature of the heating element has risen to +90
o
C (for instance
in case of power failure).
Remove the threaded cap from the overheat protector button
and press the button.
Afterheat overheat protection
Preheat overheat protection
0
5
15
30
20
25
10
AFTER HEATING
-10
-5
5
10
0
10
12
20
15
THE BALANCE ADJUSTMENT
basic setting 5c
the basic
regulation 10 c
FREEZING PROTECTION
18
0
-1v
-2v
Supply
Exhaust
-2v
-1v
SUMMER BYPASS
.
o
C
USAGE AND CORRECT LEVEL OF AIR EXCHANGE
The air exchange level is regulated by changing the
working speed of the air impeller from the operating panel.
Airflow of different adjustable positions can be seen
from table 2.
Adjustable position 1 is for basic air exchange for an empty house.
Adjustable position 2 and 3 are normal working positions.
Adjustable position 4 is efficiency positions (i.e. for saunas).
The correct usage positions will be found by experience;
observing the purity of the air or sultriness when coming in
from ou tside, observing moisture on the windows or drying
of the sau na.
