Electrical Work; Test Run - Mitsubishi Electric Mr. Slim PUHZ-RP HA Serie Manual De Instalación

6. Electrical work

6.1. Outdoor unit (Fig. 6-1, Fig. 6-2)
1 Remove the service panel.
2 Wire the cables referring to the Fig. 6-1 and the Fig. 6-2.
D
L
N
For Heater
S1
S2
S3
B
L N S1 S2 S3
D
For Power
For Heater For Heater
D D
For Power
B
A
E E
C
6.2. Field electrical wiring
Indoor unit model
Outdoor unit power supply
Outdoor unit input capacity
Main switch (Breaker)
Outdoor unit power supply
Outdoor unit power supply earth
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
Remote controller-Indoor unit
Outdoor unit L-N
Indoor unit-Outdoor unit S1-S2
Indoor unit-Outdoor unit S2-S3
Remote controller-Indoor unit
*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV).
*2. Max. 50m Total Max. including all indoor/ indoor connection is 80 m.
*3. A 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 insulataed 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 unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57)
3. Install an earth longer and thicker than other cables.

7. Test run

7.1. Before test run
s After completing installation and the wiring and piping of the indoor and outdoor
units, check for refrigerant leakage, looseness in the power supply or control
wiring, wrong polarity, and no disconnection of one phase in the supply.
s Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0MΩ Ω Ω Ω Ω .
s Do not carry out this test on the control wiring (low voltage circuit) terminals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0MΩ Ω Ω Ω Ω .
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below 1 MΩ due to refrigerant accumulat-
ing in the compressor. This is not a malfunction. Perform the following procedures.
1. Remove the wires from the compressor and measure the insulation resistance of
the compressor.
2. If the insulation resistance is below 1 MΩ, the compressor is faulty or the resist-
ance dropped due the accumulation of refrigerant in the compressor.
3. After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the com-
pressor. The resistance will rise above 1 MΩ after the compressor is warmed
up for two to three hours.
(The time necessary to warm up the compressor varies according to atmos-
pheric conditions and refrigerant accumulation.)
8
*With Heater
model only
A
C
A Indoor unit
B Outdoor unit
C Remote controller
D Main switch (Breaker)
E Earth
For Heater
D D
A A
E E
Fig. 6-1
~/N (single), 50Hz,
220-230-240V
*1
2 × Min. 1.5
1 × Min. 1.5
3 × 2.5 (Polar)
*2
1 × Min. 2.5
2 × 0.69 (Non-polar)
*3
AC 220-230-240V
*4
AC 220-230-240V
*4
*4
*4
I RP1.6, 2
C
I RP2.5-6
D
E
A Earth terminal
B Terminal block
C Clamp
D Service panel
E Wire the cables so that they do not contact the center of the service panel or the gas valve.
RP1.6, 2V RP2.5, 3V
~/N (single), 50Hz,
220-230-240V
16A 25A
2 × Min. 1.5
1 × Min. 2.5
3 × 2.5 (Polar)
1 × Min. 2.5
2 × 0.69 (Non-polar)
AC 220-230-240V
AC 220-230-240V
DC24V DC24V
DC14V DC14V
• To operate the compressor with refrigerant accumulated in the compressor,
the compressor must be warmed up at least 12 hours to prevent breakdown.
4. If the insulation resistance rises above 1 MΩ, the compressor is not faulty.
Caution:
• The compressor will not operate unless the power supply phase connection
is correct.
• Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power switch can result in
severe damage to internal parts. Keep the power switch turned on during the op-
erational season.
s The followings must be checked as well.
• The outdoor unit is not faulty. LED1 and LED2 on the control board of the outdoor
unit flash when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
• A protective sheet covers the surface of the DIP switch panel on the control board of
the outdoor unit. Remove the protective sheet to operate the DIP switches easily.
• Make sure that the all of the SW5 DIP switches for function changes on the control
board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to
OFF, record the settings and then set all of the switches to OFF. Begin recovering
the refrigerant. After moving the unit to a new location and completing the test run,
set the SW5 switches to the previously recorded settings.
B
A
F
L N
B
E
A
B
L N
C
Fig. 6-2
RP4, 5V
~/N (single), 50Hz,
220-230-240V
32A
2 × Min. 4
1 × Min. 4
3 × 2.5 (Polar)
1 × Min. 2.5
2 × 0.69 (Non-polar)
AC 220-230-240V
AC 220-230-240V
DC24V
DC14V
S1 S2 S3
S1 S2 S3
RP6V
~/N (single), 50Hz,
220-230-240V
40A
2 × Min. 6
1 × Min. 6
3 × 2.5 (Polar)
1 × Min. 2.5
2 × 0.69 (Non-polar)
AC 220-230-240V
AC 220-230-240V
DC24V
DC14V