Wolf BWL-1S-07 - 14 Routing the Refrigerant Lines

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Routingtherefrigerantlines
14 Routingtherefrigerantlines
Theoutdoormoduleispre-chargedwithrefrigerantR410A.
No additional charge is required for lines up to 12 m in length.
Minimumlinelength3m,maximumlinelength25m.
Max.heightdifferentialbetweenindoorandoutdoorunit15m.
For12–25mlinelength,topupwith60g/mofrefrigerantR410A.
Use only copper pipes suitable for refrigerants to EN-12735-1, and thermal insulation with a temperature resistance
ofupto120°C.(Forinternaldiameter,see"Specication"chapter.)
Suction gas lines and liquid lines must have separate thermal insulation. Closed cell, diffusion-proof thermal
insulation, min. thickness 6 mm.
Extended refrigerant lines are not permitted for outdoor use. Junctions must remain accessible for leak testing,
as they are potential leak sources.
Riskofinjuryfromincorrectlyroutedpipework
Route pipework in such a way as to avoid any danger to persons.
Before routing pipework, please note:
− Wherepipeworkisroutedviaductswithothersupplylines,forexample,hotuepipes,areciprocal
effect can result. Insulate supply lines where necessary.
− Do not route pipework through lift shafts.
− In public stairways and passageways, route pipework at a minimum height of 2.20 m.
− Pipeworkroutedthroughre-resistantwallsandceilingsmusthavereproofseals.
− Protect pipework from excessive stress.
− Protectpipeworkfromenvironmentalinuences,suchasdirt,waste,andwater.
Damagefromimpuritiesintherefrigerantcircuit
Moisture or dirt, for example metal swarf, can get into the refrigerant circuit.
− Never reuse refrigerant lines.
− Use only closed refrigerant lines.
− Pipes in wall ducts must be plugged.
Pipeworkdamagedbykinking
Copper pipes kink easily and can then no longer be used.
− Never step on copper pipes.
− Always choose an adequately large bending radius; use a pipe bender.
− Install pipe supports every 2 m.
− Use protective piping for ground routing.
Structuraldamagefromcondensate
Where pipework is not insulated or its thermal insulation is damaged, condensate forms.
− Thermally insulate all pipework.
− Check that the pipework is fully insulated and that all junctions are lagged with insulating tape.
− Lag damaged thermal insulation using insulating tape (accessory).
− Seal wall ducts on site.
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