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Y2S........................ Solenoid valve (receiver gas purge)
Y3S........................ Solenoid valve (4 way valve)
Z1C~Z3C ............... Noise filter (ferrite core)
Z1F ........................ Noise filter (with surge absorber)
Cool/heat selector
S1S........................ Selector switch (fan/cool – heat)
S2S........................ Selector switch (cool – heat)
10.2. Precautions on electrical wiring work
Before obtaining access to terminal devices, all supply circuits
must be interrupted.
Use only copper wires.
The wiring between the indoor and outdoor unit must be for
230 V.
Do not turn on the main switch until all the wiring is completed.
Make sure that the main switch has a contact separation of at
least 3 mm in all poles.
Never squeeze bundled cables into a unit.
Fix cables so that cables do not make contact with the pipes
(especially on high pressure side).
Secure the electrical wiring with clamping material as shown in
figure 10
so that it does not come in contact with the piping,
particulary on the high-pressure side.
Make sure no external pressure is applied to the terminal
connectors.
When installing the earth leakage breaker make sure that it is
compatible with the inverter (resistant to high frequency
electrical noise) to avoid unnecessary opening of the earth
leakage breaker.
As this unit is equipped with an inverter, installing a phase
advancing capacitor not only will deteriorate power factor
improvement effect, but also may cause capacitor abnormal
heating accident due to high-frequency waves. Therefore, never
install a phase advancing capacitor.
Follow the "electrical wiring diagram" when carrying out any
electrical wiring.
Always ground wires. (In accordance with national regulations of
the pertinent country.)
Do not connect the ground wire to gas pipes, sewage pipes,
lightning rods, or telephone ground wires.
•
Combustion gas pipes: can explode or catch fire if there is a gas
leak.
•
Sewage pipes: no grounding effect is possible if hard plastic
piping is used.
•
Telephone ground wires and lightning rods: dangerous when
struck by lightning due to abnormal rise in electrical potential in
the grounding.
This unit uses an inverter, and therefore generates noise, which
will have to be reduced to avoid interfering with other devices.
The outer casing of the product may take on an electrical charge
due to leaked electrical current, which will have to be discharged
with the grounding.
10.3. Connection example of total system wiring
(See figure 9)
1
Power
2
Earth leakage breaker
3
Branch switch overcurrent breaker (fuse)
4
Ground
5
BP unit
RMXS112~160D7V3B
Super Multi Plus System air conditioner
4PW19516-1B
10.4. Connecting power wire and transmission wires
Let the power wire (including ground wire) go through the power
outlet port on either the front, side or back of the outdoor unit.
Let the transmission wires go through the cable outlet port, pipe
outlet port or knock out hole on either the front, side or back of
the outdoor unit.
(See figure
A
Rear direction
B
Lateral direction
C
Front direction
1
Power terminal block (X1M)
2
Control wiring between units
3
Power cable with ground wire. (Keep proper distance between
power cable and control wiring).
4
Clamp (field supply)
5
stop valve mounting plate
6
Ground
7
Electric parts box
8
Power cable
9
Ground cable (yellow/green). Make sure that the ground cable
length is longer than the power cable length. This is to make sure
that the ground cable is loosing last in case of pulling.
10
Fix the control wiring with the clamps
11
Control PC board
12
Control terminal block (X1M)
13
Cable clamp with copper foil
14
Shield
Fix the shield area of the control wiring to the copper foil of the
clamp.
15
Screw
Precautions when knocking out knockout holes
To punch a knock 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 knock holes, remove
any burrs from the knock holes and wrap the wiring with
protective tape to prevent damage.
If there is any possibility that small animals enter the system
through the knock holes, plug the holes with packing materials
(to be prepared on-site).
1
2
1
Knockout hole
2
Burr
3
Packing materials
10).
3
Installation manual
12
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