14
Subject to change without notice | 83053500oUK | ait-deutschland GmbH
10 Overflow valve
NOTE
● The activities in this section are only neces-
sary for integration of the storage tank in series
● Complete the work steps quickly, otherwise
the maximum return temperature could be
exceeded and the heat pump will switch to
high-pressure fault
● Turn the rotary-push button on the overflow
valve to the right to increase the temperature
difference (the spread), turn it to the left to re-
duce it
The system is running in heating mode (ideally in
cold condition).
11 Commissioning
CAUTION
Prior to commissioning the unit, the facing
panels must be closed and the fan protec-
tion grille must be mounted.
The relevant planning and design data of the system
is documented in full
The relevant energy supply company has been
notified of the operation of the heat pump system
The system is air-free
Installation check using the rough checklist has
been completed successfully
Clockwise rotating load infeed field is present at
the compressor (only applies to units with 400V
connection)
The system is installed and mounted according to
this operation manual
The electrical installation has been carried out
properly according to this operation 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
1. Carefully fill in and sign the notice of completion
for the heat pump systems.
2. In Germany: Send the notice of completion
for heat pump systems and rough checklist to
the manufacturer’s factory customer service
department.
In other countries: Send the notice of completion
for heat pump systems and rough checklist to the
manufacturer’s local partner.
3. Arrange for the heat pump system to be com-
missioned by the manufacturer’s authorised after
sales service for a fee.
“12.2 Maintenance after commissioning“,
page 15
12 Maintenance
NOTE
We recommend that you conclude a mainte-
nance agreement with your specialist heat-
ing company.
NOTE
Water accumulations resulting from extreme
weather conditions, or from condensation
in, on and under the unit which do not flow
away via the condensate discharge are nor-
mal and do not constitute a heat-pump mal-
function or defect.
12.1 Basic principles
The cooling circuit of the heat pump does not require
any regular maintenance.
Local regulations require, among other things, leak
checks beforehand and/or for a logbook to be kept for
certain heat pumps.
► Ensure compliance with local regulations with
regard to the specific heat pump system.
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