19
Subject to change without notice | 83059000dUK – Translation of the original operating manual | ait-deutschland GmbH
4. Flush the domestic hot water charging circuit for
approx. 1 minute.
5. Turn the spindle so that the rounded side of the
spindle points in the direction of marking B of the
connections of the 3-way switching valve.
6. Flush heating circuit thoroughly, until no more air
is discharged.
7. Vent system at the respective highest point.
8. Vent heat pump.
9. Position the valve motor (1) on the 3-way
switching valve (3).
10.
Insert the U-clip (2) into the floor of the valve
motor.
1
3
1.
2.
2
11. Ensure that the U-clip has latched into position
correctly:
●
Valve motor sits securely on the 3-way
switching valve.
●
Both prongs of the U-clip sit on the lug.
●
The tips of the U-clip are visible by approx.
2 mm (not significantly more!).
13 Insulate hydraulic
connections
Insulate hydraulic lines in accordance with local
regulations.
1.
Open shut-off devices.
2. Perform a pressure test and check for leaks.
3. Insulate external piping on site.
4.
Insulate all connections, fittings and pipes.
14
Set the overflow valve
NOTE
●
The activities in this section are only
necessary for integration of storage tank in
series.
●
Complete the worksteps quickly, otherwise
the maximum return temperature can be
exceeded and the heat pump switches to
high-pressure fault.
● Turn the adjusting knob at the overflow
valve to the right to increase the
temperature difference (the spreading),
turn it to the left to reduce it.
System is running in heating mode (ideally in cold
condition).
There is a facility directly in the IBN - assistant to
adjust the overflow valve to suit the hydraulic system if
the storage tank is integrated in series.
Confirm IBN - assistant or carry out the adjustment via:
Service >> Settings >> Efficiency pump:
The menu point “Adjust overflow valve” is preset
to “No”. The overflow valve adjustment function is
deactivated.
