Drill Wall Hole For Connective Piping; Connect Drain Hose - Carrier 18K-24K Installation Manual

Step 3: Drill wall hole for connective piping
1. Determine the location of the wall hole based on the
location of the outdoor unit.
2. Using a 65mm (2.5in) or 90mm(3.54in) (depending
on models )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 (0.5in). This will
ensure proper water drainage.
3. 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.
CAUTION
When drilling the wall
hole, make sure to
avoid wires, plumbing,
and other sensitive
components.
Step 4: Connect drain hose
The drainpipe is used to drain water away from the unit.
Improper installation may cause unit and property
damage.
CAUTION
• Insulate all piping to prevent condensation, which
could lead to water damage.
• If the drainpipe is bent or installed incorrectly,
water may leak and cause a water-level switch
malfunction.
• In HEAT mode, the outdoor unit will discharge
water. Ensure that the drain hos|e is placed in
an appropriate area to avoid water damage and
slippage.
• DO NOT pull the drainpipe forcefully. This could
disconnect it.
NOTE ON DRAINPIPE INSTALLATION
Installation requires a polyethylene tube (exterior
diameter = 3.7-3.9cm, interior diameter = 3.2cm),
which can be obtained at your local hardware store or
dealer.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in the following
Figure.
1. Cover the drainpipe with heat insulation to prevent
2. Attach the mouth of the drain hose to the unit's
Wall
Outdoor
Indoor
≈ 12mm /
0.5 inch
3. Pass the drain hose through the wall hole. Make
condensation and leakage.
outlet pipe. Sheath the mouth of the hose and clip it
firmly with a pipe clasp.
Drain hose
Pipe clasp
Drainpipe
connecting port
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 (39-59").
• Incorrect installation could cause water to flow
back into the unit and flood.
NOTE: When connecting multiple drainpipes,install the
pipes as illustrated in the following Figure.
≥10cm
(4")
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.
1-1.5m
(39-59")
Downward slope
1/100
Insulation
Page 09-GB