Lync AEGIS
2: INTRODUCTION
L-OMM-012_A
•
4/20/2022
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2.5. Domestic Hot Pump Management
The software also manages the domestic hot water pump. The start, minimum and maximum
speed can be adjusted separately for both pumps. The domestic hot water pump can be active
when the unit is in standby, but this setting is strongly not recommended, to avoid the
destratification of the temperature in the tanks.
Please note that the main unit pump and the domestic hot water
pump operate with coordinated set points in the sense that an
offset (that can be set by the user) is subtracted from the unit set
point ST1 and it is used to regulate the domestic hot water pump
referred to the BT3 probe. It is needed to apply a regulation offset
(it must be negative) to adjust the secondary pump set point to take
in consideration the temperature losses in the plate exchanger.
NOTE:
Speed regulation of the secondary side pump is independent from regulation of the internal
pump. Please see Aegis Electronic Controller Manual (L-OMM-013) for details.
2.6. Superheat Set Limit
For inlet water temperature > 30 °C (>86°F) the superheating is managed by 3-way bypass valve in
combination to specific software improvements. The High Inlet Temperature (HIT) Function
limits the superheat value with the use of the bypass valve, keeping in consideration both
the compressor oil temperature and the compressor discharge temperature.
In order to optimize the cycle efficiency and at the same time avoid too high temperatures to the
compressor, the target superheat value is not constant, but will be adjusted according to the
compressor discharge temperature and compressor oil temperature.
This superheat limit should not be changed by a user except under direction from the
manufacturer or an authorized manufacturer’s representative.
