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9. INSTALLING ACCESSORIES/
ADDITIONAL FUNCTIONS
9.1. ROOM TEMPERATURE SENSOR
The room temperature sensor has a temperature sensor that
provides a further value that the control computer can use when
calculating the supply temperature. The influence 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 FACTOR.
In the event of a heating deficit:
ROOM
Increased room
Actual room
FACTOR
temperature, °C
temperature, °C
0
22
1
22
2
22
3
22
4
22
In the event of a surplus of heat the conditions are the opposite:
ROOM
Increased room
Actual room
FACTOR
temperature, °C
temperature, °C
0
20
1
20
2
20
3
20
4
20
NOTE! The room temperature sensor is connected to a
!
safety extra-low voltage.
1.
Install the room temperature sensor in a location in the house
where the room temperature is relatively constant:
• Centrally located in the house
• At eye level
• Not in direct sunlight
• Not in a draft
2.
Hang a thermometer next to the room temperature sensor in
order to calibrate it after connecting it.
Figure 59: Connecting the room temperature sensor.
Set point for
supply line, °C
20
40
20
42
20
44
20
46
20
48
Set point for
supply line, °C
22
40
22
38
22
36
22
34
22
32
3.
Connect the room temperature sensor to terminal blocks 303 and
304.
4.
After connecting the room temperature sensor, it is calibrated by
holding in both buttons for 15 seconds until the display starts to
flash.
5.
Set the actual room temperature that the thermometer shows.
6.
Wait 10 seconds until the display stops flashing.
If the display shows "--" for outdoor temperature no outdoor
temperature has been read.
9.2. EvU FUNCTION
The EVU function (electricity supply utility signal) prevents the
operation of HEAT PUMP, ADD.HEAT and CIRC.PUMP as long
as the contact is closed. The text EVU STOP is shown in the
display when this function is active.
Figure 60: Connection diagram for the EVU function.
The EVU function is activated by making a connection between terminal
l
blocks 307 and 308 using an external 1 channel timer.
9.3. TARIFF CONTROL
The room temperature lowering function provides a regular,
temporary lowering of the indoor temperature.
10 kohm
Figure 61: Connection diagram for the tariff control function.
The tariff control is activated by making a connection between
l
terminal blocks 307 and 308 using an external 1 channel timer
and a 10 kohm resistor.
The extent to which the temperature is lowered is set in the menu
l
INFORMATION -> Heatcurve -> REDUCTION.
EN
25
ENGLISH
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