6
6. Drainage piping work
6.1. Drainage piping work (Fig. 6-1)
• Use VP25 (O. D. ø32 PVC TUBE) for drain piping and provide 1/100 or more down-
ward slope.
• Be sure to connect the piping joints using a polyvinyl type adhesive.
• Observe the figure for piping work.
• Use the included drain hose to change the extraction direction.
1
Correct piping
2
Wrong piping
A
Insulation (9 mm or more)
B
Downward slope (1/100 or more)
C
Support metal
K
Air bleeder
L
Raised
M
Odor trap
Grouped piping
D
O. D. ø32 PVC TUBE
E
Make it as large as possible
F
Indoor unit
G
Make the piping size large for grouped piping.
H
Downward slope (1/100 or more)
I
O. D. ø38 PVC TUBE for grouped piping.
(9 mm or more insulation)
J
Up to 85 cm
1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 6-2)
(Affix the tube using PVC adhesive then secure it with a band.)
2. Install a locally purchased drain pipe (PVC pipe, O.D. ø32).
(Affix the pipe using PVC adhesive then secure it with a band.)
3. Insulate the tube and pipe. (PVC pipe, O.D. ø32 and socket)
4. Check that drain flows smoothly.
5. Insulate the drain port with insulating material, then secure the material with a
band. (Both insulating material and band are supplied with the unit.)
A
Unit
B
Insulating material
C
Band (large)
D
Drain port (transparent)
E
Insertion margin
F
Matching
G
Drain pipe (O.D. ø32 PVC TUBE)
H
Insulating material (purchased locally)
I
Transparent PVC pipe
J
O.D. ø32 PVC TUBE (Slope 1/100 or more)
K
Band (small)
L
Drain socket
Max. 20m
1.5–2m
A
B
C
B
M
L
K
D
E
D
H
I
G
D
F
F
F
Max. 15cm
J
F
G
11
25
25
25
B
A
C
K
F
L
H
D
E
E
I
J
C
,
K
Fig. 6-1
Fig. 6-2
(mm)
7. Electrical work
7.1. Indoor unit (Fig. 7-1)
1. Remove the two electrical wiring service panels.
2. Wire the power cable and control cable separately through the respective wiring
entries given in the diagram.
• Do not allow slackening of the terminal screws
• Always install an earth, longer than other cables.
(Earth cable dia: Thicker than 1.6 mm)
• Leave excess cable so that the electrical box can be suspended below the unit
during servicing. (Approx. 50 to 100 mm)
A
Entry for control cable
B
Entry for power
C
Clamp
D
Service panel for indoor controller switch setting
E
Service panel for electrical wiring
F
Electric heater power supply terminals (PLH models)
G
Indoor / Outdoor unit connecting terminals
H
Remote controller connector
I
Secure with the clamp
J
Intake sensor
K
Holder
s
Selecting non-fuse breaker (NF) or earth leakage breaker (NV).
A
E
D
J
,
K
B
C
G
F
I
H
Fig. 7-1
