Electrical Wiring - Mitsubishi Electric PEH-P8MYA Manuel D'installation

(2) Wireless remote controller type
[Fig. 9.4.4] (P.7)
Changing the power voltage setting
Be sure to change the power voltage setting depending on the voltage used.
1 Go to the function select mode
CHECK
button F twice continuously.
Press the
(Start this operation from the status of remote controller display turned off.)
is lighted and "00" blinks.
CHECK
button C once to set "50". Direct the wireless remote controller
Press the temp
toward the receiver of the indoor unit and press the
2 Setting the unit number
button C and D to set the unit number "00". Direct the
Press the temp
wireless remote controller toward the receiver of the indoor unit and press the
min
button B.
3 Selecting a mode
Enter 04 to change the power voltage setting using the
Direct the wireless remote controller toward the receiver of the indoor unit and
h
button A.
press the
Current setting number: 1 = 1 beep (one second)
2 = 2 beeps (one second each)
3 = 3 beeps (one second each)

10. Electrical wiring

Precautions on electrical wiring
Warning:
Electrical work should be done by qualified electrical engineers in accord-
ance with "Engineering Standards For Electrical Installation" and supplied
installation manuals. Special circuits should also be used. If the power cir-
cuit lacks capacity or has an installation failure, it may cause a risk of elec-
tric shock or fire.
1. Be sure to take power from the special branch circuit.
2. Be sure to install an earth leakage breaker to the power.
3. Install the unit to prevent that any of the control circuit cables (remote control-
ler, transmission cables) is brought in direct contact with the power cable out-
side the unit.
4. Ensure that there is no slack on all wire connections.
5. Some cables (power, remote controller, transmission cables) above the ceiling
may be bitten by mouses. Use as many metal pipes as possible to insert the
cables into them for protection.
6. Never connect the power cable to leads for the transmission cables. Otherwise
the cables would be broken.
7. Be sure to connect control cables to the indoor unit, remote controller, and the
outdoor unit.
8. Put the unit to the ground on the outdoor unit side.
9. Be sure to connect between the control cable terminal block of the outdoor unit
and that of the indoor unit. (Cables have polarity, so make sure that they are
connected according to the terminal numbers.)
10. Fix power source wiring to control box by using buffer bushing for tensible force
(PG connection or the like). Connect control wiring to control terminal bed
throngh the knockout hole of control box using ordinary bushing.
Caution:
Be sure to put the unit to the ground on the outdoor unit side. Do not con-
nect the earth cable to any gas pipe, water pipe, lightening rod, or telephone
earth cable. Incomplete grounding may cause a risk of electric shock.
[Fig. 10.0.1] (P.8)
A Power supply
C Power supply wiring for outdoor unit
D Power supply wiring for indoor unit
E Outdoor unit
G Connection wiring for indoor/outdoor units (polarity)
H Remote controller
I Connection wiring for indoor/remote controller (no polarity)
J Grounding
K Signal wiring for alternate defrost
[Fig. 10.0.2] (P.8)
A Indoor unit
C Control cable wiring
E Breaker
G Power cable terminal bed
I Defrost signal cable terminal bed
18
h
button A.
C and D buttons.
B Main switch/fuse (purchased locally)
F Indoor unit
B Power cable wiring
D Outdoor unit
F Fuse
H Control cable terminal bed
J Defrost signal cable wiring
4 Selecting the setting number
C and D buttons to change the power voltage setting to 01 (240
Use the
V). Direct the wireless remote controller toward the sensor of the indoor unit and
h
button A.
press the
5 To select multiple functions continuously
Repeat steps 3 and 4 to change multiple function settings continuously.
6 Complete function selection
Direct the wireless remote controller toward the sensor of the indoor unit and press
button E.
the
Note:
Whenever changes are made to the function settings after construction or
maintenance, be sure to record the added functions with an "
"Check" column provided on the chart.
Caution:
Make sure that refrigerant pipe and wiring unit must be connect from Out-
door unit No.1 to Indoor unit No.1 and Outdoor unit No.2 to Indoor unit No.2
respectively.
Wiring from Outdoor unit No.1 must be connect to terminal bed TB4-1 in
control box of Indoor unit No.1 while wiring from Outdoor unit No.2 must be
connect to terminal bed TB4-2 in control box of Indoor unit No.2.
Any mistakes on those connections may cause an abnormal refrigerant pipe
temperature and etc.
[Wiring example] (For metal piping)
Breaker
Power Cable
Capacity
2
PEH-P8MYA 1.5 mm or thicker
2
PEH-P16MYA 1.5 mm or thicker
2
PUH-P8MYA 4 mm or thicker
PEH-P10MYA 1.5 mm 2 or thicker
2
PEH-P20MYA 1.5 mm or thicker
PUH-P10MYA 6 mm 2 or thicker
* The grounding wire must be of the same diameter as the power cable wires.
[Selecting earth leakage breaker (NV)]
To select NF or NV instead of a combination of Class B fuse with switch, use the
following:
• In the case of Class B fuse rated 15 A
Fuse (class B) 15 A
Earth leakage NV-30CA
breaker ELB 15 A
(with over-load protection) 30 mA 0.1s or less
NV is a product name of MITSUBISHI.
• Power supply cords of appliances shall not be lighter than design 245 IEC53 or
227 IEC53.
• A switch with at least 3 mm contact separation in each pole shall be provided
by the Air conditioner installation.
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using
fuse, wire or copper wire with too large capacity may cause a risk of mal-
function or fire.
Location of cable holes
[Fig. 10.0.3] (P.8)
A For remote controller cables
B For outdoor unit connection cables
• Switching the external static pressure (PEH-P8, 10MYA ONLY)
The unit has been set at the factory so that the standard amount of air is
provided when the static pressure outside the unit is 50 Pa. However, it is
possible to change the motor torque so that the standard amount of air is
provided when the static pressure outside the unit is 150 Pa. This can be done
by removing the white connector and connecting the red one (both connectors
are provided inside the control box) as shown below.
[Fig. 10.0.4] (P.8)
A White connector (50 Pa) C01
C Remove
", in the
Control Defrost signal
Fuse
Cable Cable
15 A 15 A
Cable or
–
15 A 15 A
wire of
0.8 mm 2 2
50 A 32 A 0.5 mm or thicker
or
15 A 15 A
–
Thicker
15 A 15 A
(12 VDC)
50 A 40 A 0.5 mm 2 or thicker
40 A 50 A
NV-100CF NV-100CF
40 A 50 A
100 mA 0.1s or less 100 mA 0.1s or less
C For power supply cables
B Red connector (150 Pa) C02