1
3
N L1
1
3
N L1
N
L1
L2
5. OUTDOOR UNIT INSTALLATION
5-1 INSTALLING THE OUTDOOR UNIT
CAUTION
•
It is best to transport the unit in its original packaging to the installation site.
•
Since the centre of gravity of the unit is off-centre, caution is necessary when
lifting the unit using a rope, etc.
•
The outdoor unit should not be tilted by more then 45˚ when transporting. (Do not
stock them sideways.)
Prepare the concrete foundation
Always anchor outdoor unit legs by means of bolts. (Procure anchor bolts locally.)
Secure firmly to prevent overturning by earthquakes or gusts of wind.
Keep the length of foundation bolts up to 1 inch from the bottom side of installation base.
5-2 INSTALLING THE REFRIGERANT TUBING
1
Pipe take-in direction
The pipe can be passed in any of the four
directions: front, rear, right and lower side.
2
Remove the service panel (two screws) and
the piping cover (two screws).
•
Be careful not to break the bent portion when
connecting the pipes. Be sure to use two
spanners to tighten the flare nuts.
3
When racking the pipes, keep the racking
below the top of the piping cover to allow easy
service panel removal.
Note:
When connecting the pipe, see the tightening torque in 6-2 PIPE CONNECTION before
service. use 2 spanners (wrenches) in servicing as shown in the figure below;
5-3 INDOOR/OUTDOOR WIRE CONNECTION
•
Connect the indoor/outdoor unit connecting wire
A
from the indoor unit correctly on
the terminal block.
•
For future servicing, give extra length to connecting wire.
•
Leave some slack in wires to allow easier servicing.
Make the em-
bedding deep.
M10 bolt
Fasten with bolt.
Make wide.
Installation base
Length of foundation bolts
Max. 1 inch
Back piping
Piping cover
Front piping (knockout)
Lower piping
Stop valve
Bending radius
R4”-R6”
Piping cover
Extraction direction for
service panel
Service panel
Racking
Piping cover
CAUTION
•
Be careful not to make mis-wiring.
•
Firmly tighten the terminal screws to prevent them from loosening.
•
After tightening, pull the wires lightly to confirm that they do not move.
•
If the connecting wire is incorrectly connected to the terminal block, the unit does
not operate normally.
•
If a ground is incorrect, it may cause an electric shock.
Right piping (knockout)
Fasten with
wiring clamp.
Indoor/Outdoor unit
connecting terminals
Power supply terminals.
Pipe cover
Service
panel
Service
panel
Pipe cover
Rear wiring
Loosen terminal screw.
Terminal block
Lead wire
<Connection details>
Hold the stop valve.
Tighten the nut.
CONNECTING WIRES
•
For 115 V AC, wired to be AWG14 double insulated, 300 V insulation, or as required
by national or applicable local code.
For 12 V DC, control wire must be from AWG22 to AWG14 stranded and double
insulated, 300 V insulation.
Equal to Belden 9407.
•
Use copper conductors only.
Pipe cover
Urethane foam
Wiring conduit holder
Not needed in other cases.
1
Remove the service panel (2 screws).
2
Wiring outlet contains rear pipe hole
and wiring hole of pipe cover
(knockout).
3
Use the accompanying “conduit
holder”, when wiring by using wiring
conduit on the rear side.
4
At the end of piping and wiring, fill up
the clearance between the pipe cover
and main unit with the blocks of
urethane foam provided on the inside
of service panel.
WARNING
•
Be sure to attach the service panel of the outdoor unit securely. If it is not attached
correctly, it could result in a fire or an electric shock due to dust, water, etc.
•
Tighten terminal screws securely.
CAUTION
•
Wiring should be done so that the power lines are not subject to tension.
Otherwise, heat may be generated or fire may occur.
Connect wires to the matching numbers
of terminals.
Remark:
∗
Indoor unit can also be
powered from an
independent power supply
[Max. Fuse size (time
delay) : 15 A].
In this case these indoor/
outdoor connecting wires
for indoor power supply
are not necessary.
∗∗
A disconnect switch may
be required.
Check the local code.
∗∗∗
Use a ring tongue terminal
in order to connect a
ground wire to terminal.
Grounding
terminal
∗∗∗
INDOOR UNIT
Terminal block
Terminal block 2
OUTDOOR UNIT
Terminal
block 1
Ground
Grounding
terminal
∗∗∗
Disconnect switch
∗∗
115V AC
∗
1phase, 60Hz
DC12 V
(Polar)
Power supply
208/230V AC, 1phase 3wires, 60Hz
