Mitsubishi Electric PUHZ-SHW-HA Serie Manual De Instalación página 10

7. Electrical work
7.2. Field electrical wiring
Outdoor unit model
Outdoor unit power supply
Outdoor unit input capacity Main switch (Breaker)
Outdoor unit power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N (single)
Outdoor unit L1-N, L2-N, L3-N (3 phase)
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV).
Make sure that the current leakage breaker is one compatible with higher harmonics.
Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter.
The use of an inadequate breaker can cause the incorrect operation of inverter.
*2. (SHW80 - 140)
Max. 45 m
If 2.5 mm used, Max. 50 m

If 2.5 mm  used and S3 separated, Max. 80 m
(SHW230)
Max. 80 m Total Max. including all indoor/indoor connection is 80 m.
• Use one cable for S1 and S2 and another for S3 as shown in the picture.
*3. The 10 m wire is attached in the remote controller accessory.
*4. The figures are NOT always against the ground.
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.
Notes: 1. Wiring size must comply with the applicable local and national code.
2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
3. Use an earth wire which is longer than the other cords so that it will not become disconnected when tension is applied.
Warning:
· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between
power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when
the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.
· In below - 20°C condition, it needs at least 4hr stand by to operate in order to warm the electrical parts.
Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a fire or communication failure.
INDOOR-OUTDOOR CONNECTING CABLE (SHW230)
Cross section of cable Wire size (mm
Round
Flat
Flat
Round
*1 :Power supply cords of appliances shall not be lighter than design 60245 IEC or
227 IEC.
*2 :In case that cable with stripe of yellow and green is available.
*3 :In case of regular polarity connection (S1-S2-S3), wire size is 1.5 mm
*4 :In case of regular polarity connection (S1-S2-S3).
*5 :In the flat cables are connected as this picture, they can be used up to 30 m.
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication error if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the inter-
mediate connection point.
10
SHW80V
~/N (single), 50 Hz, 230 V
*1 32 A
3 × Min. 4
* 3 × 1.5 (Polar)
* 1 × Min. 1.5
*3 2 × 0.3 (Non-polar)
* AC 230 V
* AC 230 V
* DC 24 V
* DC 12 V
Power supply
Isolator
S1
A-Control
S2
Outdoor Unit
S3
) Number of wires
2
2.5 3
2.5 3
1.5 4
2.5 4
2 .
SHW112V
~/N (single), 50 Hz, 230 V
40 A
3 × Min. 6
3 × 1.5 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar)
AC 230 V
AC 230 V
DC 24 V
DC 12 V
3 poles isolator
Polarity
Clockwise : S1-S2-S3
*Pay attention to stripe of yellow and green
Not applicable
(Because center wire has no cover finish)
From left to right : S1-Open-S2-S3
Clockwise : S1-S2-S3-Open
*Connect S1 and S3 to the opposite angle
S1 S2 S3
*6 :Mentioned cable length is just a reference value.
It may be different depending on the condition of installation, humidity or
materials, etc.
SHW112, 140Y
3N~ (3 ph 4-wires), 3N~ (3 ph 4-wires),
50 Hz, 400 V
16 A
5 × Min. 1.5
Cable length 50m:3×4 (Polar)/
3 × 1.5 (Polar)
Cable length 80m:3×6 (Polar)
1 × Min. 1.5
2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)
AC 230 V
AC 230 V
DC 24 V
DC 12 V
S1
A-Control
S2
Indoor Unit
S3
(3C Flat cable × 2)
SHW230Y
50 Hz, 400 V
32 A
5 × Min. 4
1 × Min. 2.5
AC 230 V
AC 230 V
DC 24 V
DC 12 V
L (m)*6
(30)
*2
Not applicable
*5
(18)
*3
(30)
*4