Test Run - Mitsubishi Electric PAC-AK51BC Manual De Instalación

9. Electrical work
WIRING SPECIFICATIONS
(OUTDOOR-BRANCH BOX CONNECTING CABLE)
Cross section of cable Wire size (mm²) Number of wires
Round
Flat
Flat
Round
*1 :Power supply cords of appliances shall not be lighter than design 6045 IEC or
607 IEC.
* : In case that cable with stripe of yellow and green is available.
*3 : In case of regular polarity connection (S1-S-S3), wire size is 1.5 mm².
*4 : In case of regular polarity connection (S1-S-S3).
*5 : In the flat cables are connected as this picture, they can be used up to 55 m.
Be sure to connect the outdoor-branch box/indoor-branch box connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the in-
termediate connection point.

10. Test run

• Refer to the "Test run" section of the installation manual of the indoor units and outdoor unit.
• When installation of the indoor unit, branch box, and outdoor unit is complete, begin test run to check for water leaks in the branch box.
• After power is supplied or after an operation stop for a while, a small clicking noise may be heard from the inside of the branch box. The electronic expan-
sion valve is opening and closing. The unit is not faulty.
• Be sure to perform the test run for each indoor unit. Make sure each indoor unit operates properly following the installation manual attached to the unit.
• If you perform the test run for all indoor units at once, you cannot detect any erroneous connection, if any, of the refrigerant pipes and the indoor/outdoor unit connecting
wires.
Clockwise : S1-S-S3
* Pay attention to stripe of yellow and green
.5 3
Not applicable
(Because center wire has no cover finish)
.5 3
From left to right : S1-Open-S-S3
1.5 4
Clockwise : S1-S-S3-Open
*Connect S1 and S3 to the opposite angle
.5 4
Polarity
(3C Flat cable
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.
L (m)*6
(50)
*
Not applicable
*5
(45)
*3
(55)
*4
2)
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