Evu Function; Tariff Control - Danfoss DHP-A Service Instructions Manual

Service instructions
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
▪ Not in a room with alternative heating
2. Break all power supply to the heat pump.
3. Remove the front cover from the heat pump.
4. Route the room sensor's connecting cable through the opening in the top panel up to the connecting block.
5. Connect the cable as follows.
6. Install the front cover on the heat pump. Switch on the power supply.
7. Hang a thermometer next to the room sensor.
8. Calibrate the sensor by holding in both buttons for 15 seconds until the display starts to flash.
9. Set the actual room temperature that the thermometer shows.
10. Wait 10 seconds until the display stops flashing.
If the display shows "--" for indoor temperature no indoor temperature has been read.
1.2

EVU function

When connecting between terminal blocks 307 and 308 the EVU (Elektrizitäts Versorgungs Unternehmen) function is achieved. This pre-
vents operation of the heat pump, auxiliary heater and circulation pump for the brine circuit. The exception is the circulation pump
heating circuit which is permitted to run. The text EVU STOP is shown in the display when this function is active.
1. Break all power supply to the heat pump.
2. Remove the front cover from the heat pump.
3. Route the EVU function's connecting cable through the opening in the top panel up to the connecting block.
4. Connect the cable as illustrated below.
5. Install the front cover on the heat pump. Switch on the power supply.
1.3

Tariff control

When connecting between terminal blocks number 307 and 308 over a 10 kΩ resistor the tariff control function is active which gives the
opportunity of a recurring temporary reduction of the indoor temperature.
The extent of the tariff control is set in the menu INFORMATION -> HEAT CURVE -> REDUCTION.
1. Break all power supply to the heat pump.
2. Remove the front cover from the heat pump.
3. Route the tariff control function's connecting cable through the opening in the top panel forward to the connecting block.
4. Connect the cable as illustrated below.
5. Install the front cover on the heat pump. Switch on the power supply.
Danfoss Heating Solutions
Domestic heat pumps
10 kΩ
VIGFI102
303
304
307
308
307
308
5