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| EN
EIOM v2018.04
5. HEAT RECOVERY SYSTEMS
5.1 PLATE HEAT EXCHANGER
In the plate heat exchanger, the warm extract air and the cool fresh air, separated by thin plates, pass each other in counter-flow. No mixing of the
two air streams takes place. Therefore, the transmission of dirt, odours, moisture, bacteria, etc. is impossible. Heat transmitted from extract air to
fresh air purely by conduction because of the temperature difference between the two air streams: the warm extract air cooled down and the cool
fresh air heated up.
Heat exchanger section divided in separate parts from size 12-KR due transportation reasons. Refer to separate assembly manual for assembly
of such section.
Figure 5.1.1 - Cross-flow heat exchanger section.
5 – Heat exchanger, 6 – by-pass damper, 7 – by-pass chamber, 8 – condensate tray, 9 – fixing bolts.
Plate heat exchanger is equipped with by-pass damper.
By-pass damper is controlled with modulating actuator (0-10V).
The actuator is controlled by means of a standard control signal DC 0 ... 10 V. It opens to the position dictated by this signal. The measuring voltage
U allows the damper position (0 ...100%) to be electrically indicated and serves as a follow-up control signal for other actuators.
Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from
rotating.
Manual operation is possible with the pushbutton (the gear is disengaged for as long as the button is pressed or remains locked).
Adjustable angle of rotation with mechanical end stops.
The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.
Safety notes:
Assembly must be carried out by trained personnel. Any legal regulations or regulations
issued by authorities must be observed during assembly.
By-pass actuator electrical wiring diagram:
Figure 5.1.2 – Modulating actuator (0-10V) wiring diagram
The actuator rotation direction can be changed.
Figure 5.1.3 – Changing the rotation direction of the actuator
