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ED34-862 Installation
FXDQ-PB / FXDQ-NB 193
5
3PN09042-1A
English 9
〈
PRECAUTIONS
〉
Drain piping connections
• Do not connect the drain piping directly to sewage pipes that
smell of ammonia. The ammonia in the sewage might enter
the indoor unit through the drain piping and corrode the heat
exchanger.
• Do not twist or bend the drain hose (2), so that excessive
force is not applied to it.
(This type of treatment may cause leaking.)
• If you are using central drain piping, follow the procedure
outlined in the figure 14.
• Select central drain piping of proper size according to the
capacity of the connected unit.
(2) After piping work is finished, check drainage flows
smoothly, with manner described below.
• Gradually pour approximately 1L of water from the outlet hole
into the drain pan to check drainage.
• Check the drainage.
8. INSTALLING THE DUCT
Connect the duct supplied in the field.
Air inlet side
• Attach the duct and intake-side flange (field supply).
• Connect the flange to the main unit with accessory screws
(7).
• Wrap the intake-side flange and duct connection area with
aluminum tape or something similar to prevent air escaping.
CAUTION
When attaching a duct to the intake side, be sure to attach an air
filter inside the air passage on the intake side. (Use an air filter
whose dust collecting efficiency is at least 50% in a gravimetric
technique.)
The included filter is not used when the intake duct is attached.
Air outlet side
• Connect the duct according to the air inside of the outlet-side
flange.
• Wrap the outlet-side flange and the duct connection area
with aluminum tape or something similar to prevent air
escaping.
CAUTION
• Be sure to insulate the duct to prevent condensation from
forming. (Material: glass wool or polyethylene foam, 25 mm
thick)
• Use electric insulation between the duct and the wall when
using metal ducts to pass metal laths of the net or fence
shape or metal plating into wooden buildings.
• Be sure to explain about the way of maintaining and cleaning
local procurements (air filter, grille (both air outlet and suction
grille), etc.) to your customer.
9. ELECTRIC WIRING WORK
9-1 GENERAL INSTRUCTIONS
• Shut off the power before doing any work.
• All field supplied parts and materials, electric works must
conform to local codes.
• Use copper wire only.
• See also the “Wiring Diagram plate” attached to the control
box lid when laying electrical wiring.
• For details on hooking up the remote controller, refer to the
“REMOTE CONTROLLER INSTALLATION MANUAL”.
• All wiring must be performed by an authorized electrician.
• This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B . . . , and be sure the terminal board
wiring to the outdoor unit and BS unit are properly matched. If
wiring and piping between the outdoor unit and an indoor unit
are mismatched, the system may cause a malfunction.
• A circuit breaker capable of shutting down power supply to
the entire system must be installed.
• Refer to the installation manual attached to the outdoor unit
for the size of power supply wiring connected to the outdoor
unit, the capacity of the circuit breaker and switch, and wiring
instructions.
• Be sure to ground the air conditioner.
• Do not the earth wire should come in contact with gas pipes,
water pipes, lightning rods, or telephone earth wires.
• Gas pipes: gas leaks can cause explosions and fire.
• Water pipes: they cannot be grounded if hard vinyl pipes
are used.
• Telephone earth wire and lightning rods: the ground
potential when struck by lightning gets extremely high.
• To avoid short circuiting the power supply wire, be sure to use
insulated terminals.
• Do not turn on the power supply (circuit breaker or earth leak-
age breaker) until all other work is done.
9-2 SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE
Power-related
Class 20 · 25 · 32 40 · 50 63
Number of
positions
16 22 26
Portable pump
Refrigerant
pipes
Bucket
Air outlet
Drain outlet
Connection screw (7)
(accessory)
(Field supply)
(Field supply)
(Field supply)
(Field supply)
Flange
Flange
Aluminum tape
Aluminum tape
Main unit
Insulation
material
Air inlet side Air outlet side
Model
Power supply wiring (including earth wire)
Number
of units
Field
fuses
Wire Size
20 · 25 · 32 type
1 15A
H05VV-U3G
(NOTE 1)
Size must
comply with
local codes.
40 · 50 type
63 type
Model
Transmission wiring
Remote controller wiring
Wire Size (mm
2
)
20 · 25 · 32 type
Sheathed vinyl cord
or cable (2 wires) (NOTE 2)
0.75 - 1.25 40 · 50 type
63 type
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