Gree U-Match Series Owner's Manual page 40

U-Match Series Duct Type Unit
⑤. Specifications of circuit breaker are based on a working condition where
the working temperature is 40°C. If working condition changes, please
adjust the specifications according to national standards.
⑥. Adopt 2pc of 0.75mm² power cords to be the communication cords
between indoor and outdoor units. The maximum length is 100m. Please
select a proper length according to local conditions. Communication
cords must not be twisted together. To be in compliance IOS5151, it is
necessary to use 8 meters long wire.
⑦. Adopt 2pc of 0.75 mm² power cords to be the communication cords
between wired control and indoor unit. The maximum length is 30m.
Please
Communication cords must not be twisted together. To be in compliance
IOS5151,it is necessary to use 8 meters long wire.
⑧. The wire gauge of communication cord should not be less than 0.75 mm².
It's recommended to use 0.75 mm² power cords as the communication
cords.
⑨. Calculation of the maximum permissible system impedance：
a) The following evaluation procedure shall be applied if the equipment
emissions cannot meet the technical requirements of IEC 61000-3-3 and
therefore the equipment cannot be declared compliant by the
manufacturer in accordance with 6.2.1. In such a case the equipment
shall only be connected to a supply having a system impedance lower
than Z
ref
b) To be in compliance with EN 61000-3-11, impedance value of
power-supply system connected to product must be less than or equal to
the allowable maximum value of |Z
Models
GU50W/A1-K
GU71W/A1-K
GU85W/A1-K
GU100W/A1-M
GU125W/A1-M
GU140W/A1-M
GU160W/A1-M
select a proper
.
length according
| in the following sheet:
sys
Max |Z
36
to local conditions.
| Unit:ohms
sys
0.170
0.090
0.071
0.416
0.142
0.173
0.193