Hisense kf-2302gwe Guia Do Utilizador
11
condensation, both tubes must be well insulated
with a proper insulation material. The thickness
of the insulation should be a minimum 8 mm.
with a proper insulation material. The thickness
of the insulation should be a minimum 8 mm.
CAUTION
After a tube has been
insulated, never try to
bend it into a narrow curve,
as this may cause the tube
to break or crack.
insulated, never try to
bend it into a narrow curve,
as this may cause the tube
to break or crack.
5-6.Taping the Tubes
(1) At this time, the 2 refrigerant tubes (and
(1) At this time, the 2 refrigerant tubes (and
electrical wire if local codes permit) should be
taped together with armoring tape. The drain
hose may also be included and taped together as
1 bundle with the tubing.
taped together with armoring tape. The drain
hose may also be included and taped together as
1 bundle with the tubing.
(2)Wrap the armoring tape from the bottom of the
outdoor unit to the top of the tubing where it
enters the wall. As you wrap the tubing, overlap
half of each previous tape turn. (Fig.37)
enters the wall. As you wrap the tubing, overlap
half of each previous tape turn. (Fig.37)
(3)Clamp the tubing bundle to wall, using 1 clamp
approx. every 120 cm.
NOTE
Do not wind the armoring tape too tightly since
this will decrease the heat insulation effect. Also
be sure the condensation drain hose splits away
from the bundle and drips clear of the unit and the
tubing.
5-7. Finishing the Installation
After finishing insulating and taping over the
tubing, use sealing putty to seal off the hole in
the wall to prevent rain and draft from entering.
(Fig.38)
6.AIR PURGING
Air and moisture remaining in the refrigerant
system have undesirable effects as indicated below.
Therefore, they must be purged completely.
·pressure in the system rises
·operating current rises
·cooling efficiency drops
· moisture in the air may freeze and block
capillary
tubing
· water may lead to corrosion of parts in the
refrigerant
system
6-1.Air Purging with a Vacuum Pump (for Test Run)
(1)Check that each tube (both narrow and wide tubes
this will decrease the heat insulation effect. Also
be sure the condensation drain hose splits away
from the bundle and drips clear of the unit and the
tubing.
5-7. Finishing the Installation
After finishing insulating and taping over the
tubing, use sealing putty to seal off the hole in
the wall to prevent rain and draft from entering.
(Fig.38)
6.AIR PURGING
Air and moisture remaining in the refrigerant
system have undesirable effects as indicated below.
Therefore, they must be purged completely.
·pressure in the system rises
·operating current rises
·cooling efficiency drops
· moisture in the air may freeze and block
capillary
tubing
· water may lead to corrosion of parts in the
refrigerant
system
6-1.Air Purging with a Vacuum Pump (for Test Run)
(1)Check that each tube (both narrow and wide tubes
between the indoor and outdoor units have been
properly connected and all wiring for the test
run has been completed. Note that both narrow
and wide tube service valves on the outdoor unit
are kept closed at this stage.
properly connected and all wiring for the test
run has been completed. Note that both narrow
and wide tube service valves on the outdoor unit
are kept closed at this stage.
(2)Using an adjustable wrench or box wrench, remove
the valve caps from the service valve on both
narrow and wide tubes.
narrow and wide tubes.
(3) Connect a vacuum pump and a manifold valve
(with pressure gauges) to the service port on
the wide tube service valve.(Fig.39)
the wide tube service valve.(Fig.39)
(4)With the “ Lo” knob of the manifold valve open,
run the vacuum pump. The operation time for the
vacuum pump varies with tubing length and the
capacity of the pump. The following table shows
the amount of time for evacuation:
vacuum pump varies with tubing length and the
capacity of the pump. The following table shows
the amount of time for evacuation:
CAUTION
Be sur e t o use a m a n i f o ld
valve f o r air p u r g i n g . I
f it i s
Not av a i l a b l e , use a s t op
valve for th i s p u r p o s e.
The “ Hi” k n o b o f t h e
m a n i f o l d v a l v e m u s t
valve f o r air p u r g i n g . I
f it i s
Not av a i l a b l e , use a s t op
valve for th i s p u r p o s e.
The “ Hi” k n o b o f t h e
m a n i f o l d v a l v e m u s t
Min.
8mm
Insulation
Thickness:
min.8mm
Fig.36
Fig.35
Fig.37
Insulated tubes
Clamp
Fig.38
Tubing
Apply putty here
Fig.34
Outdoor unit
Insulation
Indoor unit
Spanner
Torque wrench