21
Subject to change without notice | 83056700fUK – Translation of the original operating manual | ait-deutschland GmbH
9
Set the overflow valve
NOTE
●
The activities in this section are only nec-
essary for in-line tank integration.
● 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 tempera-
ture 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 (2) of the overflow valve
(1) until the temperature drop between the flow
and return temperature is set as follows:
●
at heat source temperature 0 °C: 8 K
●
at heat source temperature 10 °C: 10 K
6. Open valves to heating circuit.
7. Reset the heating and heat pump controller.
10 Commissioning
Relevant planning & design data of the system is
documented in full.
The competent energy supplier has been notified
of operation of the heat pump system.
System is air-free.
Installation check using the rough checklist has
been completed successfully.
1.
Ensure that the following points are fulfilled
completely:
● Clockwise rotating load infeed field is present at
the compressor
●
The system is installed and mounted in accord-
ance with this operating manual
●
The electrical installation has been carried out
properly in accordance with this operating manual
and 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 level of the tripping current is compliant
● Heating circuit is flushed and vented
●
Frost protection of the heat source meets the re-
quirements
“Technical data / Scope of supply“, from
page 24
● All shut-off devices of the heating circuit are open
● All shut-off devices of the heat source are open
●
The pipe systems and components of the system
are leak-tight
2. Fill out carefully and sign the notice of completion
for heat pump systems.
3. In Germany: Send notice of completion for
heat pump systems and rough checklist to
the manufacturer’s factory customer service
department.
In other countries: Send notice of completion for
heat pump systems and rough checklist to the
manufacturer’s local partner.
4. Arrange for the heat pump system to be
commissioned by after-sales service authorised
by the manufacturer; this is a chargeable service.
