Rinnai 31 Multi Split Type AC
INDOOR INSTALLATION
Rinnai 27 Multi Split Type Air Conditioner
NOTE : DRAINPIPE INSTALLATION
The drainpipe is used to drain water 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
malfunction of the water- level switch.
• In HEAT mode, the outdoor unit will
discharge water. Ensure that the drain hose
is placed in an appropriate area to avoid
water damage & slippage due to frozen
drain water.
• DO NOT pull the drainpipe forcefully as this
could cause it to disconnect.
NOTE ON PURCHASING PIPES
This installation requires a polyethylene tube
(outside diameter = 3.7-3.9cm, inside diameter
= 3.2cm), which can be obtained at your local
hardware store or from your dealer.
• When using an extended drainpipe, tighten
the indoor connection with an additional
protection tube to pr event 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 f rom sagging, space
hanging wires every 1-1.5m.
• If the outlet of the drainpipe is higher than
the body’s pump joint, p rovide a lift pipe for
the exhaust outlet of the indoor unit. The lift
pipe must be installed no higher than 75cm
from the ceiling board and the distance
between the unit and the lift pipe must
be less than 30cm. Incorrect installation
could cause water to flow back into the
unit and flood.
• To p revent air bubbles, keep the drain hose
level or slightly tilted up.
See Figure below.
Ceiling
Indoor Drainpipe Installation
Install the drainpipe as shown in Figure below.
Downward slope
1 - 1.5m
1/100
1-1.5m
22cm
Downward slope
1/100
0 - 75mm
NOTE: When connecting multiple drainpipes,
install the pipes as shown in Figure below .
with a pipe clasp.
(See Figure below)
Drain hose
0-53cm
(with pump)
≥10cm
Drainpipe
Metal clamp
Insulation
connecting port
(no pump)
≤30cm
≤53cm
≤75cm
1.
Cover the drainpipe with heat insulation to
prevent condensation and leakage .
2.
Attach the mouth of the drain hose to the
unit’s outlet pipe. Sheath the mouth of the
DRAIN PIPE INSTALLATION
Rinnai 28 Multi Split Type Air Conditioner
DRAIN PIPE INSTALLATION
3.
Using a core drill, drill a hole in the wall.
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.
1
2
3
4
5
6
7
Control box lid
Wiring diagram label
Power supply terminal block
Clamp for wiring
Wiring between units
Plastic cover
Clamp (eld supply)
Make sure that the hole is drilled at a
slight downwar d angle, so that the outdoor
end of the hole is lower than the indoor end
by about 12mm. This will ensure proper
water drainage (See Figure below ). 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.
NOTE: The drainpipe outlet should be at
least 5cm 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 odours that might otherwise
come back into the house.
Wall
Outdoor Indoor
≈ 12mm
Wiring Layout
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