Gorenje TC80Z Mode D'emploi page 17

Zone of operation of the sanitary heat pump
On diagram 1 there are two zones of operation of the sanitary heat pump among the
curves:
•
The dark green zone represents the area of use with higher efficiency. The
volumetric air flow is higher in this zone, which requires a lower pressure drop
(channel system version with minimum pressure drop).
•
The light green zone represents the area of use with lower air flow in relation to
the pressure drop and fan setting.
Noise
Like the aerodynamic characteristics rise from the lowest to the highest, the noise
increases as well. Between the aerodynamic characteristics 80% and 100 % there is a
zone with increased noise.
Checking the calculation of pressure drop
Determining the aerodynamic characteristics based on the calculation of pressure drop
while taking into account individual elements of the pipeline and air flow is an iteration.
Once the aerodynamic characteristic has been determined and set, we must measure the
air flow in the pipeline. If the air flow does not correspond to the ventilation system, we
select the next higher or lower aerodynamic characteristic that corresponds to the
ventilation system.
Selecting the operating point of the fan for the ventilation system
When determining the speed of the fan, we must know the maximum air flow for ventilation
and pressure drop caused by the pipeline. In Diagram 1, find the desired air flow and draw
a vertical line, then draw a horizontal line at the pressure drop that you have calculated
(based on the existing pipeline). Select the fan characteristic curve that lies the closest to
the point where the lines cross.
Example of selecting the aerodynamic characteristic
In diagram 3 at air flow of 150 m³/h draw a vertical line. The pipeline represents 70 Pa of
pressure drop, which is added to the below (red) line**. Total pressure drop is thus 90 Pa.
Draw a horizontal line at the pressure drop of 90 Pa. The point where the lines meet lies on
the curve that corresponds to 60% speed of the fan. This is the standard setting of the fan
that has also been preset by the manufacturer.
Note:
**Line, represents the internal static pressure drop created by the evaporator.
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