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- Improper heat insulation/anti-dew dressing can result in a water leak or dripping causing damage to household effects, etc.
- All gas pipes must be securely heat insulated in order to prevent damage from dripping water that comes from the condensation formed on them during a cooling operation or personal injury from burns
- Give heat insulation to both gas and liquid side pipes. Bundle a heat insulating material and a pipe tightly together so that no gaps may be left between them and wrap them together with a connecting
cable by a dressing tape.
- Both gas and liquid pipes need to be dressed with 20 mm or thicker heat insulation materials above the ceiling where relative humidity exceeds 70%.
3. DRAIN PIPING WORK
Execute drain piping by using a drain elbow and drain grommets supplied
●
separately as option parts, where water drained from the outdoor unit is a
problem.
Water may drip where there is a larger amount of drain water. Seal around the drain
●
elbow and drain grommets with putty or adequate caulking material.
Condensed water may flow out from vicinity of service valve or connected pipes.
●
Where you are likely to have several days of sub-zero temperatures in a row, do not
●
use a drain elbow and drain grommets. (There is a risk of drain water freezing
inside and blocking the drain.)
Do not use drain elbow and grommet made of plastic for drain piping when base
●
heater for outdoor unit is used. Plastic grommet and elbow will be damaged and
burnt in worst case.
Prepare another drain tray made of metallic material for collecting drain when base
●
heater is used.
4. ELECTRICAL WIRING WORK
Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical
installations in the country.
●
- braided cord (code designation 60245 IEC 51),
- ordinary tough rubber sheathed cord (code designation 60245 IEC 53)
of appliances for outdoor use.
Ground the unit. Do not connect the grounding wire to a gas pipe, water pipe, lightning rod or telephone grounding wire.
●
If impropery grounded, an electric shock or malfunction may result.
A grounding wire must be connected before connecting the power cable. Provide a grounding wire longer than the power cable.
●
The installation of an impulse withstanding type earth leakage breaker is necessary. A failure to install an earth leakage breaker
●
Power source, signal line and ground terminal block
Grounding terminal
○
Do not connect to the grounding wire from another
unit, but install a dedicated wire up to the grounding
wire from the distribution board.
Wiring guide
Wiring diagram
○
It is attached on the back side of the service panel.
Outgoing cable direction
○
As like the refrigerant pipe, it can be let out in any of
the following directions: side right, front, rear and
downward.
Model
200V
Power cable thickness
Model
Power source
(mm
2
3 phase 4 wire
200V
380-415V 50Hz
5.5
250V, A160V, A200V
380V 60Hz
●
instructions of the indoor unit.
●
Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country.
●
voltage drop is 2%. For an installation falling outside of these conditions, follow the internal cabling regulations. Adapt it to the regulation in effect in each
country.
5. TEST RUN
●
Before conduct a test run, make sure that the service valves are opened.
WARNING
●
Turn on power 6 hours prior to a test run to energize the crank case heater.
●
●
Always give a 3-minute or longer interval before you start the unit again whenever it is stopped.
●
Removing the service panel will expose high-voltage live parts and high-temperature parts, which are quite dangerous.
Take utmost care not to incur an electric shock or burns. Do not leave the unit with the service panel open.
●
Grommet
Drain elbow
For details of electrical cabling, refer to the indoor unit installation manual.
Model 250V
A160V, A200V
MAX. over current (A)
Cable length (m)
Grounding wire thickness
)
20
54
φ1.6mm
21
51
Grommet
Drain hose
(To be procured on the installer's part)
Do not turn on the power until the electrical work is completeted .
●
Do not use a condensive capacitor for power factor improvement under any circumstances. (It dose not improve power factor,
●
while it can cause an abnormal overheat accident)
For power source cables, use conduits.
●
Do not lay electronic control cables (remote control and signaling wires) and other cables together outside the unit. Laying them
●
together can result in the malfunctioning or a failure of the unit due to electric noises.
Fasten cables so that may not touch the piping, etc.
●
When cables are connected, make sure that all electrical components within the electrical component box are free of loose
●
connector coupling or terminal connection and then attach the cover securely. (Improper cover attachment can result in
malfunctioning or a failure of the unit, if water penetrates into the box.)
Always use a three-core cable for an indoor-outdoor connecting cable. Never use a shield cable. Separate grounding wire from indoor -
●
outdoor connecting wire.
●
Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
●
In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
●
Grounding terminals are provided in the control box.
Power cable, indoor-outdoor connecting wires
●
Always perform grounding system installation work
with the power cord unplugged.
Always use an earth leakage circuit
CAUTION
breaker designed for inverter circuits
to prevent a faulty operation.
※
At the connection with FDU indoor unit.
Indoor-outdoor wire thickness
×
Model
Power source
number
3 phase 4 wire
200V
φ1.6mm x 3
380-415V 50Hz
250V, A160V, A200V
380V 60Hz
※
At the connection with FDUM indoor unit.
Model
Power source
3 phase 4 wire
200V
380-415V 50Hz
250V, A160V, A200V
380V 60Hz
A failure to observe these instructions can result in a compressor breakdown.
Items to check before a test run
Wires for connecting indoor
and outdoor units
Liquid piping
When condensed water needs to be led to a drain, etc., install the
●
unit on a flat base (supplied separately as an optional part) or
concrete blocks.
Then, please secure space for the drain elbow and the drain hose.
Earth leakage breaker
(Harmonic resistant type)
Switchgear or Circuit breaker
L1 L2 L3
N
Outdoor unit
1
2/N 3
1 2/N
3
Indoor unit
X
Y
X
Y
Remote control
Model 200V, 250V
A160V, A200V
Power cable thickness
MAX. over current (A)
Cable length (m)
Grounding wire thickness
(mm
2
)
25
43
5.5
φ1.6mm
27
40
Power cable thickness
MAX. over current (A)
Cable length (m)
Grounding wire thickness
(mm
2
)
22
49
5.5
φ1.6mm
24
45
●
When you leave the outdoor unit with power supplied to it,
be sure to close the panel.
Exterior tape
Gas piping
Insulation
Clearance
PSB012D955M
Indoor-outdoor wire thickness
×
number
φ1.6mm x 3
Indoor-outdoor wire thickness
×
number
φ1.6mm x 3
W
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