Outdoor Unit Wiring - INVENTOR V7KI-18WiFiR/U7RS-18 Installationshandbuch

Wiring
Safety Precautions
WARNING
• Be sure to disconnect the power supply before
working on the unit.
• All electrical wiring must be done according to
local and national regulations.
• Electrical wiring must be done by a qualified
technician. Improper connections may cause
electrical malfunction, injury and fire.
• An independent circuit and single outlet must
be used for this unit. DO NOT plug another
appliance or charger into the same outlet.lf the
electrical circuit capacity is not enough or there
is a defect in the electrical work, it can lead to
shock, fire, 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 supply connection is made
through a switch that disconnects all poles, with
contact gap of a 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 ground-
ing wire should be away from gas pipes, wa-
ter pipes, lightning rods, telephone or other
grounding wires. Improper grounding may
cause electrical shock.
• DO NOT connect the unit with the power source
until all wiring and piping is completed.
• Make sure that you do not cross your electrical
wiring with your signal wiring, as this can cause
distortion and interference.
Follow these instructions to prevent distortion
when the compressor starts:
• The unit must be connected to the main
outlet. Normally, the power supply must
have a low output impedance of 32 ohms.
• No other equipment should be connected
to the same power circuit.
• The unit's power information can be found
on the rating sticker on the product.
TAKE NOTE OF FUSE SPECIFICATIONS
The air conditioner's circuit board(PCB) is
designed with a fuse to provide overcurrent
protection. The specifications of the fuse are
printed on the circuit board, such as:
Indoor unit: T5A/250VAC,T10A/250VAC. (ap-
plicable for unit adopts R32 refrigerant)
Outdoor unit: T20A/250VAC(for <24000Btu/h
unit),T30A/250VAC(for >24000Btu/h unit)
NOTE: The fuse is made of ceramic.

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
before preparing it for connection. Be sure
to use H07RN-F cables.
Table 8.1: Minimum Cross-Sectional Area of
Power and Signal Cables North America
Rated Current of Appliance (A)
<7
7-13
13-18
18-25
25-30
8
AWG
18
16
14
12
10
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