HBDF mk2 instruction manual 15 EN
June - 2021 WWW.HBPRODUCTS.DK
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Direct expansion evaporator
On DX evaporators, the first evaporator tubes are often placed in the air-inlet to ensure superheating, which means that
there is not enough cooling power to form ice build-up. If possible, observe where ice is formed and place both wires
and temperature sensor there.
Sensor wire is passed in/out through the evaporator from the inlet side to the outlet side as shown.
The second picture show ice on the air outlet side of a DX evaporator where there is limited ice formation on the inlet
side.
Air inlet side with limited ice due to superheat.
Air outlet side on the same evaporator covered
blocked with ice
Here is the correct wiring
shown on a direct expansion
evaporator. The wire is going
through the evaporator.
