Installing Accessories/Additional Functions; Room Temperature Sensor; Evu Function; Tariff Control - Danfoss DHP-H Installation And Service Instructions Manual

8 Installing accessories/additional
functions
8 .1 Room temperature sensor
NOTE! The room temperature sensor is connected to a safety
⚠
extra-low voltage. Follow the specific installation instructions
for the room temperature sensor with regard to positioning.
Figure 43: Connecting the room temperature sensor .
• Connect the room temperature sensor to terminal blocks 303 and
304
8 .2 EVU function
The EVU function (electricity supply utility signal) prevents the
operation of HEATPUMP, 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 44: Connection diagram for the EVU function .
• The EVU function is activated by making a connection between
terminal blocks 307 and 308 using an external 1-pin timer.
8 .3 Tariff control
The room temperature lowering function provides a regular, tempo-
rary lowering of the indoor temperature.
10 kohm
Figure 45: Connection diagram for the tariff control function .
• The tariff control is activated by making a connection between
terminal blocks 307 and 308 using an external 1-pin timer and a
10 kohm resistor.
• The extent to which the temperature is lowered is set in the
menu INFORMATION -> Heatcurve -> REDUCTION.
8 .4 Flow switch/level switch
In certain countries there is a requirement that the heat pump must
be equipped with a level switch for the brine system. Always check
local rules and regulations before commissioning the heat pump.
Figure 46: Level switch in the expansion tank/bleed tank .
1
2
3
VMBMA102
Figure 47: Connection diagram for the flow switch or level switch .
• Connect the flow switch or level switch to terminal blocks 217
and 219.
8 .5 Higher hot water temperature
NOTE! Never connect the heat pump to provide a higher tem-
⚠
perature unless the heating or hot water systems require it.
Higher temperatures increase the load on the heat pump.
If necessary, the heat pump can be connected to produce hotter water
for the heating system and hot water system when it is installed.
A
Figure 48: The pressure switches are installed on the compressor's pressure pipe .
1. Move the grey cables, which are normally connected to pres-
sure switch A, to pressure switch B.
B
2