INVENTOR V7CI-24WiFiR/U7RS-24, Installation Manual

Page: 23 / 176

ƒ
Page 23
„
 Page 18 
3. Using a 65mm (2.56”) or 90mm(3.54”) core
drill, drill a hole in the wall. Make sure that the
hole is drilled at a
slight downward angle, so that the outdoor
end of the hole is lower than the indoor end
by about 12mm (0.5”). This will ensure proper
water drainage (See Fig. 5.5). Place the
protective wall cuff in the hole. This protects
the edges of the hole and will help seal it
when you finish the installation process.
Wall
Indoor Outdoor
≈ 12mm / 0.5 inch
Fig. 5.5
Fig. 5.4
NOTE:
When drilling the wall hole, make
sure to avoid wires, plumbing, and
other sensitive components.
4. Pass the drain hose through the wall hole.
Make sure the water drains to a safe location
where it will not cause water damage or a
slipping hazard.
NOTE:
The drainpipe outlet should be at
least 5cm (1.9”) above the ground. If it
touches the ground, the unit may become
blocked and malfunction. If you discharge
the water directly into a sewer, make sure
that the drain has a U or S pipe to catch
odors that might otherwise come back into
the house.
NOTE ON DRAINPIPE INSTALLATION
•
When using an extended drainpipe, tighten
the indoor connection with an additional
protection tube to prevent it from pulling
loose.
•
The drainpipe should slope downward at a
gradient of at least 1/100 to prevent water
from flowing back into the air conditioner.
•
To prevent the pipe from sagging, space
hanging wires every 1-1.5m (40-59”).
• If the outlet of the drainpipe is higher than
the body’s pump joint, provide a lift pipe for
the exhaust outlet of the indoor unit. The
lift pipe must be installed no higher than
75cm (29.5”) from the ceiling board and
the distance between the unit and the lift
pipe must be less than 30cm (11.8”).
Incorrect installation could cause water to
flow back into the unit and flood.
•
To prevent air bubbles, keep the drain hose
level or slightly tiled up (<75mm / 3”).
NOTE:
When connecting multiple drainpipes,
install the pipes as shown in Fig 5.4.
(A)
0-53cm
(20.8”)
≥10cm
(4”)
(B)
Vent
≤75cm
(29.5”)
 Page 19 
Refrigerant Piping Connection
Safety Precautions
WARNING
•
All field piping must be completed by a
licensed technician and must comply with
the local and national regulations.
•
When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration in
the room from exceeding the safety limit
in the event of refrigerant leakage. If the
refrigerant leaks and its concentration
exceeds its proper limit, hazards due to
lack of oxygen may result.
•
When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high
pressure in the refrigeration cycle,
explosion or injury.
•
Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
flammable. Ensure there is no refrigerant
leakage after completing the installation
work.
Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the
number of bends, and the drop height between
the indoor and outdoor units meets the
requirements shown in Table 6.1:
Table 6.1: The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
Type of model Capacity
(Btu/h) Length of
piping
Maximum drop
height
North America,
Australia
and the
eu frequency
conversion Split
Type
<15K 25/82 10/32.8
≥
15K - <24K 30/98.4 20/65.6
≥
24K - <36K 50/164 25/82
≥
36K -
≤
60K 75/246 30/98.4
Other Split Type
12K 15/49 8/26
18K-24K 25/82 15/49
30K-36K 30/98.4 20/65.6
42K-60K 50/164 30/98.4
6
Fig. 6.1
Oil traps
CAUTION
•
If the indoor unit is installed higher than
the outdoor unit:
An oil trap should be installed every 6m
(20ft) or 10m (32.8ft) of vertical suction
line riser. (See Fig. 6.1)
-If oil flows back into the outdoor unit’s
compressor, this might cause liquid
compression or deterioration of oil return. Oil
traps in the rising gas piping can prevent this.
The indoor unit is installed higher than the
outdoor unit
6m/20ft
(
＜
36000Btu/h unit)
10m/32.8ft
(=>36000Btu/h unit)
6m/20ft
(
＜
36000Btu/h unit)
10m/32.8ft
(=>36000Btu/h unit)