Toshiba RAS-05E2KVG-TR - Draining the Water; Refrigerant Piping Connection

11
Draining the Water
• Holes are provided on the base plate of the outdoor unit to ensure that the
 defrostwaterproducedduringheatingoperationsisdrainedo󰀨e󰀩ciently.
 Ifacentralizeddrainisrequiredwheninstallingtheunitonabalconyor 
 wall,followthestepsbelowtodraino󰀨thewater.
1. Proceedwithwater-proongbyinstallingthewater-proofrubbercapsin
the 2 elongated holes on the base plate of the outdoor unit.
[How to install the water-proof rubber caps]
  1) Placefourngersintoeachcap,andinsertthecapsintothewater 
drain holes by pushing them into place from the underside of the base
plate.
2) Press down on the outer circumferences of the caps to ensure that
they have been inserted tightly. (Water leaks may result if the caps
   havenotbeeninsertedproperly,iftheiroutercircumferencesliftupor
the caps catch on or wedge against something.)
Base plate
Water-proof rubber caps
(supplied with the outdoor unit)
Drain nipple
2. Install the drain nipple and a commercially available drain hose (with
 16mminsidediameter),anddraino󰀨thewater.(Forthepositionwhere
 thedrainnippleisinstalled,refertotheinstallationdiagramoftheindoor
and outdoor units.)
 • Checkthattheoutdoorunitishorizontal,androutethedrainhoseata
downward sloped angle while ensuring that it is connected tautly.
Drain nipple
Base plate
Commercially available
drain hose
 Donotuseordinarygardenhose,butonecanattenandpreventwater
from draining.
EN
Refrigerant Piping Connection
1. Cut the pipe with a pipe cutter.
Alignthecentersoftheconnectingpipesandtightenthearenutasfaras
possiblewithyourngers.Thentightenthenutwithaspannerandtorque
wrenchasshowninthegure.
• Tightening torque of are pipe connections
The operating pressure of R32 is higher
than that of R22 (approx. 1.6 times). It
 isthereforenecessarytormlytighten
 thearepipeconnectingsections(which
connect the indoor and outdoor units)
 uptothespeciedtighteningtorque.
Incorrect connections may cause not
 onlyagasleakage,butalsodamageto
the refrigeration cycle.
90°
Obliquity WarpRoughness
2. Insertaarenutintothepipeandarethepipe.
• Projection margin in aring : A (Unit : mm)
RIDGID (clutch type)
Flaring
Tightening connection
Outer dia.
of copper pipe
R32 tool used
Conventional tool
used
Ø6.35 0 to 0.5 1.0 to 1.5
Ø9.52 0 to 0.5 1.0 to 1.5
Ø12.70 0 to 0.5 1.0 to 1.5
Pipes thickness 0.8 mm or more
Outer dia. of copper pipe R32
Ø6.35 1.5 to 2.0
Ø9.52 1.5 to 2.0
Ø12.70 2.0 to 2.5
Pipes thickness 0.8 mm or more
IMPERIAL (wing nut type)
Die
Pipe
CAUTION
CAUTION
 • Donotscratchtheinnersurfaceofthearedpartwhenremoving
burrs.
• Flare processing under the condition of scratches on the inner surface
  ofareprocessingpartwillcauserefrigerantgasleak.
 Donotapplyexcesstorque.Otherwise,thenutmaycrackdependingon
the conditions.
Flare nut
Half union
Use a wrench to secure.
Use a torque wrench to tighten.
Flare at
indoor unit side
Flare at
outdoor unit side
Internally
threaded side
Externally
threaded side
Outer dia. of copper pipe Tightening torque
Ø6.35 mm 16to18(1.6to1.8kgf·m)
Ø9.52 mm 30to42(3.0to4.2kgf·m)
Ø12.70 mm 50to62(5.0to6.2kgf·m)
(Unit:N·m)
1144180111-00_S04_182x257_40p_S_p70_220321.indd 11 22/03/21 8:19:37 AM