Commissioning; Checks Before Commissioning; Appliance Handover - STIEBEL ELTRON CUR 25 I BASIC Installationsanleitung

InstallatIon

commIssIonIng

connecting refrigerant lines to the external unit
5.3.6 checking the system for leaks
f Evacuate the refrigerant lines and check whether the vacuum
holds.
f Break the vacuum and flood the pipework with nitrogen.
f check the tightness of all threaded fittings, using leak
detection spray for example.
f Insulate the refrigerant line connections at the internal
appliance against vapour diffusion using suitable insulation
material.
f Evacuate the pipework again.
evacuating and checking for leaks
4
1 Refrigerant valve
2 Vacuum pump
3 Service valve for liquid line, shaft
4 Service valve, Schrader valve
5 Service valve for suction gas line, shaft
5.3.7 making electrical connections
Danger to life through electrocution!
Prior to electrical installation work, always:
f isolate
f secure against reconnection
f verify the parts are isolated
f cover any adjacent parts which are still ‚live'.
Single-split appliances
- Power is supplied via the internal appliance.
- The external unit must be connected to the internal appliance
via a weather-resistant 230 V lead.
- The connection between the internal appliance and external
unit must be made with a direct connecting cable without
intermediate wiring.
- Observe the system power consumption and select a suitable
and permissible lead cross-section.
22 | cur basIc
5
1
2
Lo Hi
3
multi-split appliances
- Power is supplied via the external unit.
- Observe the system power consumption and select a suitable
and permissible lead cross-section.
- The connection with the internal appliances is made via the
connecting leads of the internal appliances.
f Open the flap above the valves to gain access to the electrical
connection space.
f Route all leads through the strain reliefs.
f Make the electrical connections. Observe the connection
diagrams.
f close the flap again.
6. commissioning
6.1

checks before commissioning

Prior to commissioning the air conditioning system, installation
work on the air conditioning appliances and on the external
unit must be completed. Also observe the internal appliance
installation instructions.
Ensure that all the following work has been completed:
- The external unit has been correctly fitted and secured, to
prevent vibrations during operation. The floor has sufficient
load-bearing capacity.
- All refrigerant lines have been checked for tightness.
- Both the connection points in the refrigerant lines and the
valves have thermal insulation to prevent vapour diffusion, to
avoid condensate formation and freezing up.
- The wall outlets are filled with liquid-resistant insulation
material, and are professionally sealed.
- The earth conductor has been professionally checked.
- The condensate drain has been installed correctly.
- The area around the internal appliance or appliances, and
around the external unit, is free so that the air inlet and
outlet are not obstructed.
- All appliances have been installed fully and securely, includ-
ing all covers.
6.2 commissioning
6.2.1 carrying out a trial run
f conduct a trial run and test all functions.
If the function tests do not yield the results described, despite
correct installation, you must inform our customer service centre
for troubleshooting.
7.

appliance handover

Explain the handling and functions of the appliance to the user.
Draw special attention to the safety information and necessary
maintenance intervals. Hand these instructions and any other
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