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SET Energietechnik Ltd. * August-Blessing-Str. 5 * D-71282 Hemmingen * Tel.: +49 (0)7150 9454-0 Fax: +49 (0)7150 2337
3.
Technical data
3.5
Hot gas defrosting
If the heat pump is operated at outside temperatures below 8°C, the evaporator will rime by
the air cooling to below freezing point. The rime on the evaporator increases and hinders the
air flow. As a result, efficiency would be reduced permanently.
To eliminate icing, hot gas is injected into the evaporator for a short period of time. This
heats the evaporator on the surface, and the ice melts. The air can flow through the
evaporator again without major hindrance. In order to shorten the defrosting process, the fan
will then switch off. The hot gas defrosting is controlled by temperature and time and will, if
required, be carried out at intervals of 35 minutes.
The settings of the defrosting control can only be changed after consultation with
SET.
3.6
Range of application / operating limits
The use of a Silent open-air swimming pool heat pump is limited to outside temperatures in
the range between approx. -8°C and +35°C. When operating a heat pump with hot gas
defrosting below the frost line, it must be ensured that water is prevented with certainty from
freezing in the pipeline system.
Frost damage is excluded from any warranty.
Operation outside these limits can lead to malfunctions, and the device will not reach its
performance data. Please observe these operating limits. We would be happy to advise you
about any special equipment which may be required.
The corrosion protection of the built-in device components is guaranteed if the chemical
threshold values of the pool water are not exceeded, in accordance with DIN 19643
“Treatment of swimming and bathing pool water”.
This only applies to fresh water with a salinity of max. 0.8%. In the event of higher salinity,
special corrosion protection is required.