Danfoss DHP-AQ, Руководство по установке

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8.4 Operational information
The following operating information may also appear:
Message Meaning
ROOM Shows the set ROOM value. Standard value: 20°C.
If the accessory room sensor is installed it shows the actual temperature and the desired
indoor temperature is shown within brackets.
START Indicates that there is a need for heat production or hot water and that the heat pump will
start.
EVU STOP Indicates that the additional function EVU is active. EVU is used to switch off the heat
pump during high energy tariffs.
NO HEAT DEMAND Indicates that there is no heating or hot water production demand.
NO COOLING DEMAND Indicates that there is no cooling demand.
COMPRESSOR START --XX Indicates that there is a need for heat, hot water or cooling and that the heat pump will
start in XX minutes.
COMIMM.HEAT Indicates that heat production is active with both compressor and auxiliary heater.
START_MIN Indicates that there is a demand for heating or hot water production but that a start delay
is active.
AUX. HEATER Indicates that there is an auxiliary heater demand.
ACT COOLING Displayed if cooling is active.
DEFROST X(Y) Displayed when defrosting is active. X shows the actual reached temperature. Y shows at
what temperature defrost is complete.
8.5 Important parameters
8.5.1 Heat production - calculating
The indoor temperature is adjusted by changing the heat pump’s heat curve, which is the control system’s tool for
calculating what the supply temperature should be for water that is sent out in the heating system. The heat curve
calculates the supply temperature depending on the outdoor temperature. The lower the outdoor temperature,
the higher the supply temperature. The difference between the desired and actual supply temperature is the basis
for calculation of the heating requirement.
The heat curve will be adjusted in connection with installation. It must be adapted later on, however, to obtain a
pleasant indoor temperature in any weather conditions. A correctly set heat curve reduces maintenance and gives
energy efficient operation.
8.5.2 CURVE
The control computer shows the value for CURVE by means of a graph in the display. The heat curve can be
changed by adjusting the CURVE value. The value for the CURVE indicates which value on the supply temperature
is required in relation to the outdoor temperature.
Installation instructions VMGFD102 – 39