Description Of Components - SystemAir SAVE VTC 700 Betriebs- Und Wartungsanleitung

38 | Service GB
9.2.1

Description of Components

9.2.1.1 Fans
Fans have an external EC type rotor which can be steplessly controlled individually 16–100%. The motor bearings are
life time lubricated and maintenance free. It is possible to remove the fans for cleaning, see "User Manual" for more
information.
9.2.1.2 Filters
The factory installed filters are of filter quality M5/ePM10 50% for the supply air and M5/ePM10 50% for the extract
air filter. The filters need to be replaced when polluted. New sets of filters can be acquired from your installer or
wholesaler.
Filter quality F7/ePM1 60% can be installed for supply air filtering.
The filter type is labelled on the top of the filter
9.2.1.3 Defrost damper
The built in bypass damper (pos. 5 figure 9) is involved in defrosting, cool recovery, and supply air temperature control
of the unit. The damper motor is controlled by an analogue 0–10 V signal.
A test sequence which opens and closes the damper will occur if there is heating demand and after every power up of
the unit. An actuator drive detects if the bypass is able to close completely. If a signal is not detected within two mi-
nutes after the function test has been initiated, then the warning Bypass Damper appears in the HMI.
9.2.1.4 Heat exchanger
SAVE VTC 700 is equipped with a highly efficient, counter flow plate heat exchanger. Required supply air temperature
is therefore normally maintained without adding additional heat.
The heat exchanger is removable for cleaning and maintenance, see "User Manual" for more information.
9.2.1.5 Condensation tray and drainage
Depending on the relative humidity in the extract air, condensation may occur on the cold surfaces of the heat exchang-
er. The condensate water is gathered in the condensation tray (pos. 9 figure 9) in the bottom of the unit and is led out
through the drainage (pos. 10 figure 9) which are situated on each side of the heat exchanger. The drainage outlets are
size ½" with outer threaded tube connections (chapter 5.3.1).
9.2.1.6 Main circuit board
The main circuit board controls all functions and the unit.
It is possible to connect external accessories to a free terminals on the main circuit board.
9.2.1.7 Connection box
Connection box is placed outside of the unit. It contains connection board. All external accessories can be connected to
the unit via connection board with freely configurable terminals.
9.2.1.8 Temperature sensors
Three temperature sensors (NTC, 10 kΩ) are included in the unit from factory:
• Supply air sensor (pos. 11 figure 9)
• Outdoor air sensor (pos. 12 figure 9)
• Extract air sensor (pos. 13 figure 9).
The sensors are wired to the main print card. See wiring diagram for more information.
9.2.1.9 Humidity sensor
Relative humidity sensor (RHS/EAT) is included in the unit at factory and positioned in the extract air chamber.
The sensor also measures the temperature of extracted air.
The sensor is connected to the main circuit board. See wiring diagram for more information.
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