STIEBEL ELTRON ACW 25 i basic Bedienung Und Installation Seite 46

installation
assemBly
10.3.9 line connection to the installed internal appliance
f Pivot the wall mounted air conditioning appliance away from
the wall at the bottom, and insert a suitable spacer between
the mounting plate and wall mounted air conditioning unit.
Risk of injury
When handling the refrigerant, wear suitable safety gog-
gles and gloves.
f Trim the refrigerant lines to the right length.
f Push the union nuts onto the refrigerant lines.
f Make the necessary pipe flange.
f Make the refrigerant line straight and tighten the conical nut
by turning it three to four times by hand.
f use two spanners to tighten and counterhold the pipework
connections. Observe the necessary torque values:
pipe diameter torque
1/4" / 6 mm 14 - 18 Nm
3/8" / 10 mm 34 - 42 Nm
1/2" / 12 mm 49 - 61 Nm
5/8" / 16 mm 74 - 78 Nm
connecting refrigerant lines
1 Suction gas line
2 Liquid line
connecting refrigerant lines to the external unit
10.3.10 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 detec-
tion spray for example.
46 | acW Basic
f Insulate the refrigerant line connections at the internal ap-
pliance against vapour diffusion using suitable insulation
material.
f Evacuate the pipework again.
The pipework is not filled with refrigerant until the external unit
has been installed.
evacuating and checking for leaks
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
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10.3.11 making electrical connections
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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.
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 Make the electrical connections. Observe the connection
diagrams.
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Lo Hi
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