Bleeding And Post Filling The Brine Circuit; Installing Accessories/Additional Functions; Room Temperature Sensor; Evu Function - Danfoss DHP-AL Installation And Service Instructions Manual

7.4 Bleeding and post filling the brine
circuit
⚠
NOTE! When topping up, the brine pump must be running.
1. Start the brine pump in the control computer menu SERVICE ->
MANUAL TEST -> BRINEPUMP, set the value to 1.
2. Check that the level in the bleed tank (9) has stabilised. If the
level is not stable there is air in the system.
3. Dismantle the safety valve (8) on the bleed tank.
4. Top up with brine to 2/3 of the tank through the connection on
which the safety valve (8) was installed.
5. Leave the brine pump running so that that the air in the system
collects in the bleed tank.
6. As air separates in the bleed tank the fluid level drops, top up
as in step 4.
7. Reinstall the valve (8) when all air has been removed from the
system..
8. Open valve (8) and release any overpressure. The fluid level
should not fall below 2/3 of the height of the tank.
9. Check that valve (3) is closed.
10. Stop the brine pump in the control computer menu SERVICE ->
MANUAL TEST -> BRINEPUMP, set the value to 0.
11. Switch to the desired operating mode if the heating system has
been filled and bled.
Collect any excess brine in a plastic container for topping up the
system if necessary (leave it with the customer).
18
8 Installing accessories/additional
functions
8.1

Room temperature sensor

⚠
NOTE! The room temperature sensor is connected to a safety
extra-low voltage.
1. Install the room temperature sensor somewhere in the house
where the room temperature is relatively constant, not in a hall-
way, kitchen or a room with alternative heating.
2. Hang a thermometer next to the room temperature sensor in
order to calibrate it after connecting it.
Figure 37: Connecting the room temperature sensor.
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 all buttons for 15 seconds and then setting the
actual room temperature that the thermometer shows.
If the display shows "--" no outdoor temperature has been read.
8.2

EVU function

The EVU function 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 38: Connection diagram for the EVU function.
• Function EVU is activated by making a connection between ter-
minal blocks 307 and 308 using an external 1-pin timer.
8.3

Tariff control

The room temperature lowering function provides a regular, tem-
porary lowering of the indoor temperature.
10 kohm
Figure 39: 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.
VMBME102