INVENTOR V7CRI-18WiFiR/U7RS-18 Installationshandbuch Seite 22

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
ƒPage 22  Page 18 
„
Fig. 5.4
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 nish the installation process.
≈ 12mm / 0.5 inch
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
≤75cm
odors that might otherwise come back into
(29.5")
the house.
Wall
Outdoor Indoor
Fig. 5.5