Drainpipe Installation - Pioneer RAB Series Installation Manual

Drainpipe Installation

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 hose
is placed in an appropriate area, to avoid
water damage and slippage.
DO NOT pull on the drainpipe forcefully. This
•
could disconnect it and cause damage.
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 local
hardware store or dealer.
Indoor Drainpipe Installation
Install the drainpipe as illustrated in Figure 6.2.
Cover the drainpipe with heat insulation, to
1.
prevent condensation and leakage.
2. 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.
(See Fig 6.1)
Drain Hose
Drainpipe
Pipe Clasp
Connecting Port
Ceiling
 
Page 16
Insulation
Fig. 6.1
1-1.5m
(39-59")
Lean over 1/50
Fig. 6.2
NOTE ON DRAINPIPE INSTALLATION
•
When using an extended drainpipe, tighten
the indoor connection with an additional
protection 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, provide a lift pipe for
the exhaust outlet of the indoor unit. 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").
Drainpipe installation, for units with a pump
Ceiling
Fig. 6.3
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in Fig 6.4.
0-53cm
(20.8")
≥10cm
(4")
Fig. 6.4
6
1-1.5m
<20cm
(39-59")
Lean over 1/50
(8")
0 - 75mm
(3")