Specification Of Connection Pipe; Electric Wiring Work; Wiring Precautions - Gree U-MATCH Series Service Manual

U-Match Series DC Inverter Service Manual

3.2 Specification of Connection Pipe

3.2.1 Duct Type
Item
Model
GFH24S3GI
GUHD24NS3GO
GFH24S3G1I
GFH36S3GI
GUHD36NS3GO
GFH36S31I
GFH42S3GI
GUHD42NS3GO
GFH42S3G1I
GFH48S3GI
GUHD48NS3GO
GFH48S3G1I
GFH60S3GI
GUHD60NS3GO
GFH60S3G1I
3.2.2 Cassette Type
Model
GKH24S3GI GUHD24NS3GO
GKH36S3GI GUHD36NS3GO
GKH42S3GI GUHD42NS3GO
GKH48S3GI GUHD48NS3GO
The connection pipe should be insulated with proper water-proof insulating material.
The pipe wall thickness shall be 0.5-1.0 mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating effect performs.

4 ELECTRIC WIRING WORK

4.1 Wiring Precautions

①. Before obtaining access to terminals, all supply circuits must be disconnected.
②. The rated voltage of the unit is as shown as Table 1-4-1 and Table 1-4-2
③. Before turning on, verify that the voltage is within the 198~264V range (for single phrase unit) .
④. Always use a special branch circuit and install a special receptacle to supply power to the air conditioner.
⑤. Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner.
⑥. The special branch circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the
poles of the wiring and has an isolation distance of at least 3 mm between the contacts of each pole.
⑦. Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.
⑧. Install a leakage special branch circuit breaker in accordance with the related laws and regulations and electric
company standards.
Size of Fitting
Pipe (inch)
Liquid Gas
3/8 5/8
3/8 5/8
3/8 5/8
3/8 5/8
3/8 3/4
Size of Fitting
Item
Pipe (inch)
Liquid Gas
3/8 5/8
Table 3-2-4
Max. Height Difference
Max. Pipe
between Indoor Unit
Length (m)
and Outdoor Unit (m)
50
50
50
50
50
Table 3-2-4
Max. Height
Max. Pipe Difference between
Length (m) Indoor Unit and
Outdoor Unit (m)
50
WARNING
74
Drainage pipe(Outer
Diameter × wall
thickness) (mm)
Ф20×1.2
15
Ф20×1.2
15
Ф20×1.2
30
Ф20×1.2
30
Ф30×1.5
30
Drainage pipe(Outer
Diameter × wall
thickness) (mm)
Ф31.5×2.3
15
Ф31.5×2.3
15
Ф31.5×2.3
30
Ф31.5×2.3
30