17
Subject to change without notice | 83031300dUK | ait-deutschland GmbH
18
Set the overflow valve
NOTE
●
The activities in this section are only
necessary for the integration of storage
tanks in series
●
Complete the work steps quickly, otherwise
the maximum return temperature may 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 temperature
drop), turn it to the left to reduce it
System is running in heating mode (ideally in cold
condition).
1. In case of low heating curve: Set the system to
“Forced heating”.
Operating manual of the heating and heat pump
controller.
2.
Shut off valves to the heating circuit.
3.
Ensure that the total flow is routed via the over
-
flow valve.
4.
Read out the flow and return temperature at the
heating and heat pump controller.
Operating manual of the heating and heat pump
controller.
5. Turn the adjusting knob
(①)
of the overflow valve
(②)
until the temperature drop between the flow
and return temperature is set as follows:
Outdoor temperature
Recommended
settings
-10 °C
4 K
0 °C
5 K
10 °C
8 K
20 °C
9 K
30 °C
10 K
6. Open valves to heating circuit.
7.
Turn off “Forced heating” in the heating and heat
pump controller.
19 Commissioning
CAUTION
The unit may only be started up if the air
ducts, weather and/or rain louvres have
been installed and the facing panels are
closed.
Relevant planning & design data of the system is
documented in full.
The relevant energy supply company has been
notified of operation of the heat pump system.
The system is air-free.
Installation check using the general checklist has
been completed successfully.
1.
Ensure that the following points are fulfilled com
-
pletely:
● Right-hand (clockwise) rotating load supply field is
available at the compressor
●
The system is installed and mounted according to
this operating manual
●
The electrical installation has been carried out
properly according to this operating manual and
the local regulations
●
The power supply for the heat pump is equipped
with an all-pole circuit-breaker with at least 3 mm
contact spacing (IEC 60947-2)
●
The tripping current is complied with
● The heating circuit has been flushed and vented
● All shut-off devices of the heating circuit are open
●
The pipe systems and components of the system
are tight
2.
Carefully fill in and sign the notice of completion
for the heat pump systems.
3. In Germany: Send notice of completion for heat
pump systems and general checklist to the man-
ufacturer’s factory customer service depart-
ment.
In other countries: Send notice of completion for
heat pump systems and general checklist to the
manufacturer’s local partner.
4. Arrange for the heat pump system to be com-
missioned by the manufacturer’s authorised after
sales service for a fee.
