Specification Of Connection Pipe; Electric Wiring Work; Wiring Principle - Gree U-MATCH GUHD09NK3CO Service Manual

A/A DC INVERTER U-MATCH AIR CONDITIONERS

3.3 Specification of Connection Pipe

Item
Model
GUHD09NK3CO
GUHD12NK3CO
GUHD18NK3CO
GUHD24NK3CO
GUHD30NK3CO
GUHD36NK3CO
GUHD36NM3CO
GUHD42NK3CO
GUHD42NM3CO
GUHD48NK3CO
GUHD48NM3CO
GUHD60NM3CO

4 ELECTRIC WIRING WORK

4.1 Wiring Principle

4.1.1General
Perform wiring of the power supply in conformance with the regulations of the local electric company.
For the control wires connecting indoor units, and between indoor and outdoor units, use of double-core shield
wires is recommended to prevent noise trouble.
Be sure to set the earth leakage breaker and the switches to the power supply section of the indoor unit.
Supply power to each outdoor unit and provide an earth leakage breaker or hand switch for each outdoor unit.
Store wiring system for control and refrigerant piping system in the same line.
Arrange the cables so that the electric wires do not come to contact with high-temperature part of the
refrigerant pipe; otherwise coating melts and an accident may be caused.
Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe will finish.
Installation should be conducted by National Wiring Regulation.
The rated voltage and exclusive power supply must be adopted for the air conditioners.
The power cable should be reliable and fixed, in order to avoid the wiring terminal be suffered from force. And
do not drag the power cable forcibly.
The wire diameter of power cable should be large enough, if power cable and connection wire be damaged, it
should be replaced by the exclusive cable.
All electric installation must be done by professional personnel according to local law, regulation and this
manual.
It should be reliably earthed, and it should be connected to the special earth device, the installation work
should be operated by the professional.
The creepage protect switch and air switch must be installed.
Air switch should have the thermal dropout and magnetic dropout function, in order to avoid the short circuit
and overload.
Size of Fitting Pipe ( Inch )
Liquid Gas
1/4" 3/8"
1/4" 3/8"
1/4" 1/2"
3/8" 5/8"
3/8" 5/8"
3/8" 5/8"
3/8" 5/8"
3/8" 3/4"
Max . Height
Max .
Difference
Pipe
between
Length Indoor Unit
( m ) and Outdoor
Unit m
20 15
30 15
50 30
50 30
INSTALLATION
Amount of
Additional
Refrigerant to
be Filled ( For
Extra Length
of Pipe )
30 g / m
60 g / m
60 g / m
60 g / m
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