Installing Accessories/Additional Functions; Room Sensor - Danfoss DHP-A Service Instructions Manual

Service instructions
1

Installing accessories/additional functions

Danger
1.1

Room sensor

The room temperature sensor has a temperature sensor that provides a further value that the control system can use when calculating
the supply temperature. The impact of the room sensor in the calculation can be set in the menu HEAT CURVE -> ROOM FACTOR. Default
setting for ROOM FACTOR is 2 but can be adjusted from 0 (no impact) to 4 (large impact).
The difference between the desired and actual indoor temperature is multiplied by the set value for ROOM FACTOR. The set point on the
heating system's supply line increases or decreases with the result depending on whether there is a deficit or surplus of heat.
The table below shows examples of how the set point for the supply line is affected at CURVE 40 with different settings for ROOM FAC-
TOR.
In the event of a heating deficit:
ROOM FACTOR Desired room temperature, °C
0 20
1 20
2 20
3 20
4 20
In the event of a surplus of heat the conditions are the opposite:
ROOM FACTOR Desired room temperature, °C
0 20
1 20
2 20
3 20
4 20
Install the room sensor
N
4
Domestic heat pumps
Hazardous electrical voltage! The terminal blocks are live and can be highly dangerous due to the risk of elec-
tric shock. All power supplies must be isolated before electrical installation is started.
The room sensor is connected to a safety extra-low voltage.
VIGFI102
Actual room temperature, °C
18
18
18
18
18
Actual room temperature, °C
22
22
22
22
22
Set point for supply line, °C
40
42
44
46
48
Set point for supply line, °C
40
38
36
34
32
Danfoss Heating Solutions