Page 21
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner’s printed circuit board(PCB)
is designed with a fuse that provides overcurrent
protection. The specifications of the fuse are
printed on the circuit board, such as:
T5A/250VAC and 10A/250VAC.
Wiring
Safety Precautions
WARNING
• Disconnect the power supply before
working on the unit.
• All wiring must be performed according to
local and national regulations.
• Wiring must be done by a qualified
technician. Improper connections may
cause electrical malfunction, injury, or fire.
• An i ndependent circuit and single outlet
must be used for this unit.
DO NOT
plug
another appliance or charger into the
same outlet. If the cannot handle the load
or there is a defect in the wiring, it can
lead to shock, fire, and unit and property
damage.
• Connect the power cable to the terminals
and fasten it with a clamp. An insecure
connection may cause fire.
• Make sure that all wiring is done correctly
and the control board cover is properly
installed. Failure to do so can cause
overheating at the connection points, fire,
and electrical shock.
• Ensure that main power supply connection
is made through a switch that disconnects
all poles, with contact gap of at least 3mm
(0.118”).
•
DO NOT
modify the length of the power
cord or use an extension cord.
CAUTION
• Connect the outdoor wires before
connecting the indoor wires.
• Make sure you ground the unit. The
grounding wire should be located away
from gas pipes, water pipes, lightning rods,
telephone wires or other grounding wires.
Improper grounding may cause electrical
shock.
•
DO NOT
connect the unit to the power
source until all wiring and piping is
completed.
• Make sure that you do not cross your
electrical wiring with your signal wiring.
This may cause distortion and interference.
To prevent distortion when the compressor starts
(you can find the unit’s power information on
the rating sticker):
• The unit must be connected to the main
outlet. Normally, the power supply must
have a impedance of 32 ohms.
• No other equipment should be connected
to the same power circuit.
Outdoor Unit Wiring
WARNING
Before performing any electrical or wiring work,
turn off the main power to the system.
1. Prepare the cable for connection
a. You must first choose the right cable size.
Be sure to use H07RN-F cables.
Table 8.1: Minimum Cross-Sectional Area of
Power and Signal Cables in North America
Rated Current of
Appliance (A)
AWG
≤
7
18
7 - 13
16
13 - 18
14
18 - 25
12
25 - 30
10
8
b.
Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
approximately 15cm (5.9”) of wire.
c.
Strip the insulation from the ends.
d.
Using a wire crimper, crimp u-lugs on the
ends.
NOTE:
When connecting the wires, strictly
follow the wiring diagram found inside the
electrical box cover.
2.
Remove the electric cover of the outdoor unit.
If there is no cover on the outdoor unit, take
off the bolts from the maintenance board
and remove the protection board.
(See Fig. 8.1 and 8.2).
Cover
Screw
Fig. 8.1
Protection Board
Fig. 8.2
3.
Connect the u-lugs to the terminals
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the u-lug
of each wire to its corresponding terminal.
4. Clamp down the cable with the cable clamp.
5.
Insulate unused wires with electrical tape.Keep
them away from any electrical or metal parts.
6.
Reinstall the cover of the electric control box.
Indoor Unit Wiring
1.
Prepare the cable for connection.
a. Using wire strippers, strip the rubber jacket
from both ends of the signal cable to reveal
about 15cm (5.9”) of the wire.
b.
Strip the insulation from the ends of the
wires.
c.
Using a wire crimper, crimp the u-lugs to
the ends of the wires.
2.
Remove the cover of the electric control box
on your indoor unit.
3.
Connect the u-lugs to the terminals.
Match the wire colors/labels with the labels
on the terminal block. Firmly screw the
u-lug of each wire to its corresponding
terminal. Refer to the Serial Number and
Wiring Diagram located on the cover of the
electric control box.
Connective wiring diagram
Wiring diagram
Control box
Fig. 8.3
Table 8.2: Other World Regions
Rated Current of
Appliance (A)
Area (mm²)
Nominal Cross-Sectional
≤
6
0.75
6 - 10
1
10 - 16
1.5
16 - 25
2.5
25- 32
4
32 - 45
6
Fig. 8.4
Magnetic ring
(if supplied and packed with the accessories)
1 2 3
Pass the belt through
the hole of the Magnetic
ring to fix it on the cable
Summary of Contents for U4MRS-12B
Page 31: ...Page 31...
Page 32: ...2 Indoor Unit Installation 07 1 04 08 09 13 14 14 2 05 3 07 6 15 4 07 5 12...
Page 33: ...3 07 MC MC L N 18 20 27 28 22 23 o 25 7 18 9 27 10 29 8 20...
Page 35: ...5 2 1 2 3 4 12 5...
Page 36: ...6 L N 1 2 3 4 5 MC MC 6 7 3 9 27 29 22 19 15 17...
Page 37: ...7 4 4 1 1 9 000btu h 18 000btu h 1m 3 2 1m 3 2...
Page 41: ...11 125mm 4 92 160mm 6 3 18 60 4 1 5 6 1 2 3 1 2 3 2 3 4 11 4 12 4 15 4 16 4 13...
Page 42: ...12 5 1 2 M10 5 1 5 2 1 1 60cm 23 6 5 1 5 2 5 3...
Page 48: ...18 7 2 7 3 10 32 8 7 2 7 62m s 1500 fpm 6m 20ft 7 3...
Page 53: ...23 7 10 7 11 90 3 10cm 3 9 6 7 8 9...
Page 54: ...24 CONFIRM 3 6 ON on 4 5 1 2 FAN ONLY 2 o 3 FAN ONLY H L 4 COPY AF booster HRV 3...
Page 59: ...29 1 2 3 COOL 4 d 5 6 2 000ml COOL 10...
Page 60: ...30...
Page 61: ...31...
Page 91: ...Pagina 31...
