16
Wall
Indoor
Outdoor
≈ 12mm / 0.5 inch
Step 7: Connect drain hose
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit
and property damage.
Indoor Drainpipe Installation
Install the drain pipe as illustrated in the Figure.
Drainpipe
connecting port
Drain hose
Pipe clasp
Insulation
1.
2.
Cover the drainpipe with heat insulation to prevent
condensation and leakage.
Attach the mouth of the drain hose to the unit’s
outlet pipe. Sheath the mouth of the hose and clip
it firmly with a pipe clasp.
These units operate with a positive pressure at the
drain connections and a drain trap is required .
The trap needs to be installed as close to the unit as
possible. Make sure the top of the trap is below the
connection to the drain pan to allow complete
drainage of the pan.
NOTE: Horizontal runs must also have an
anti-siphon air vent(standpipe) install ahead of the
horizontal run to eliminate air trapping.
NOTE ON DRAINPIPE INSTALLATION
•
When using an extended drainpipe, tighten the
indoor connection with an additionalprotection
tube. This prevents 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”).
• If the outlet of the drainpipe is higher than the
body’s pump joint, use a lift pipe for the indoor
unit’s exhaust outlet. The lift pipe must be
installed no higher than 55cm (21.7”) from the
ceiling board. The distance between the unit
and the lift pipe must be less than 20cm (7.9”).
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”).
Vent T
Anti-syphon
air vent
Lean over
1/50
Drain Trap
>50mm(2”)
>50mm(2”)
>50mm(2”)
Ceiling
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 hose
is placed in an appropriate area to avoid
water damage and slippage.
• DO NOT pull the drainpipe forcefully. This
could disconnect it.
NOTE ON PURCHASING PIPES
Installation requires a polyethylene tube
(exterior diameter = 3.7-3.9cm, interior
diameter = 3.2cm), which can be obtained at
your localhardware store or dealer.
Step 6:
Drill wall hole for pipe connection
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 cu 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.
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