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8.5.
System examples
(See figure 17)
1
Field power supply
2
Main switch
3
Earth leakage breaker
4
Earth
5
BP unit
Power supply wiring (sheathed cable) (230 V)
Power supply wiring (sheathed cable) (400 V)
Transmission wiring (sheathed cable) (16 V)
Power supply + transmission wiring for indoor units
8.6.
Leading power line and transmission line
Be sure to let the power line and the transmission line pass
through a conduit hole.
Lead the power line from the upper hole on the left side plate,
from the front position of the main unit (through the conduit hole
of the wiring mounting plate) or from a knock out hole to be
made in the unit's bottom plate.
1
Electric wiring diagram. Printed on the back of the electric box lid.
2
Transmission wiring
3
Pipe opening
4
Conduit
5
Power wiring and ground wiring
6
Cut off the shaded zones before use.
7
Through cover
Precautions when knocking out knockout holes
To punch a knockout hole, hit on it with a hammer.
After knocking out the holes, we recommend you paint the
edges and areas around the edges using the repair paint to
prevent rusting.
When passing electrical wiring through the knockout holes,
remove any burrs from the knockout hole edges. Wrap the wiring
with protective tape in order to prevent damage to the wires, put
the wires through field supplied protective wire conduits at that
location, or install suitable field supplied wire nipples or rubber
bushings into the knockout holes.
1
2
1
Knockout hole
2
Burr
3
If there are any possibilities that small animals enter the system
through the knockout holes, plug the holes with packing materials
(to be prepared on-site).
RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D
(See figure 19)
3
Use a power wire pipe for the power wiring.
Outside the unit, make sure the weak low voltage
electric wiring (i.e. for the remote control, between
units, etc.) and the high voltage electric wiring do not
pass near each other, keeping them at least 50 mm
apart. Proximity may cause electrical interference,
malfunctions, and breakage.
Be sure to connect the power wiring to the power
wiring terminal block and secure it as described under
"8.8. Field line connection: power wiring" on page
Inter-unit wiring should be secured as described in
"8.7. Field line connection: transmission wiring and
cool/heat selection" on page
•
Secure the wiring with the accessory clamps so
that it does not touch the piping and no external
force can be applied to the terminal.
•
Make sure the wiring and the electric box lid do not
stick up above the structure, and close the cover
firmly.
8.7.
Field line connection: transmission wiring and
cool/heat selection
Connection diagram
(See figure 18)
1
Cool/heat selector
2
Outdoor unit PC board (A1P)
3
Take care of the polarity
4
Use the conductor of sheathed wire (2 wire) (no polarity)
5
Terminal board (field supply)
6
BP unit
7
Outdoor unit
8
Indoor unit
Fixing transmission wiring
Inside switchbox
1
Heating/cooling switching remote control cord (when a heating/
cooling switch remote control (optional) is connected) (ABC)
2
Fix to the indicated plastic brackets using field supplied clamping
material.
3
Wiring between the units (Outdoor - outdoor) (F1+F2 right)
4
Wiring between the units (BP - outdoor) (F1+F2 left)
5
Plastic bracket
12.
(See figure 22)
Installation manual
13.
12
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