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INTRODUCTION OF THE AIR EXCHANGE
BEFORE
OPERATING
SYSTEM, MAKE SURE THAT:
- There are no loose objects within the unit or the air
impeller. Screws or any other objects inside the fans
can cause damage when the unit is switched on;
- flexible mounting of fans is used to ensure their free
swinging ;
- The coverings of construction-time are removed from
the outlet- and exhaust air holes.
- All isolations and steam barriers are in order;
- heat exchanger is in place and the summer bypass
plate is in the winter position: air is flowing through the
heat exchanger and the bypass tunnel behind the heat
exchanger is closed;
-filter bags are in place and tightly secured with springs
to the silicon sealing to avoid a bypass flow;
-noise deductors are in place in the pressure chambers
located above the fans;
- The condensing water outlet is installed and the water
is drained out; test it by pouring small amount of water
in the condensate basin;
- The air impellers and their adjusters are in working
order
- Post-heating is regulated and working Ensure that the
overheat protector is reset if it has been activated;
-necessary settings have been configured through the
maintenance and settings menu on the unit's control
panel.
USAGE DURING INSTALLING
The air exchange unit should be started as soon as
installation permits.
Efficient air exchange promotes
drying of the constructions and prevents damage. In
case channeling has not been completed, fans and
adjustments are missing, filter paper must be used in
place of fans to keep the channels clean and provide
sufficient counter pressure preventing overload. The unit
must be used with full power and check the drainage of
the condensing water. The appliance, filters and heat
exchangers must be cleaned and the system adjusted
after the construction works are completed. The inner
painted walls of the unit are easy to clean
YOUR
AIR
EXCHANGE
BASIC ADJUSTMENT OF AIRFLOW
The unit alone can not produce good interior ear in case
the channels and fans are installed carelessly and main
adjustments are not made. Regulate the inlet and outlet
fans to the planned positions and start the unit at design
power speed. Measure the airflow in outside- and
exhaust air channels. The outlet must be 10-15% higher
than inlet. Check the pressure level of the channels by
checking from the fans and adjust it accordingly to obtain
the pressure level of 10-30 Pa for fans adjust and lock
the pattern. Draw measuring- and adjustment records!
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 figure 5.
Adjustable position 1 is for basic air exchange for an
empty house.
Adjustable position 2 and 3 are normal working
positions.
Adjustable position 4 and 5 are 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 outside, observing moisture on the windows or
drying of the sauna.
POST-HEATING AND SUMMER BYPASS OF INLET
AIR
DIVK-700 DE is equipped with 2000W electrical battery
operated by the means of TRIAC-adjuster or a water
battery (VKL) operated by the operating device for post-
heating the heat recovered inlet air.
The temperature of inlet air is usually regulated to +16C.
The temperature may be adjusted to higher during
winter so there would be no draught like feeling. 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 overheat protection has been activated in case the
barrier temperature has risen +90 C (for instance, in
case of power failure). Reset the overheat temperature
by pressing the switch under the threaded contact
protection.
During summertime, the Ito-exchanger element on the
bypass plate will be closed so the exhaust air will not
warm up the inlet air.
For summer time it is recommended to install EU.7 bag
filter, which efficiently filters pollen and other fine
particles among others.
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