Water Heater, Dhp-A; Regulation Information - Danfoss DHP-H User Manual

2 .6

Water heater, DHP-A

Danfoss DHP-A is supplied with an integrated 180 litre water heater with a defroster tank
outside the water heater that contains the anti-freeze. The difference between DHP-A's water
heater and other models is the defrost function of the outdoor unit, otherwise they are the
same and have the same functions.
Position name
1 Hot water line
2 Temperature sensor
 Defroster tank
 Water heater
 TWS coil
2 .7

regulation information

Heat production - calculating
The indoor temperature is adjusted by changing the heat pump's heat curve, which is the
control computer's tool for calculating what the supply temperature should be for water that
is sent out in the heating system. The supply temperature is calculated from the outdoor tem-
perature and two adjustable values: CURVE and ROOM. The lower the outdoor temperature,
the higher the supply temperature. In other words, the supply temperature of the water fed
to the heating system will increase exponentially as the outdoor temperature falls.
The heat curve will be adjusted in connection with installation. It must be adjusted later on,
however, to obtain a pleasant indoor temperature in any weather conditions. A correctly set
heat curve reduces maintenance and saves energy.
1
2
3
4
5
Figure 2: Water heater in DHP-a .
VUBMA102 Danfoss – 9