DC Inverter Multi VRF System
19
(1) Selection of circuit breaker and power cord in the above table is based upon unit’s maximum power (maximum
current).
(2) Specification of power cord is based on the working condition where ambient temperature is 40°C (104°F) and
multi-core copper cable (working temperature is 90°C (194°F), e.g. power cable with YJV cross-linked copper,
insulated PE and PVC sheath) is lying on the surface of slot. If working condition changes, please adjust the
specification according to national standard.
(3) Specification of circuit breaker is based on the working condition where ambient temperature of circuit breaker is
40°C (104°F). If working condition changes, please adjust the specification according to national standard.
4.7.3 Engineering Wiring of Power Supply and Communication Cable
(1) Please refer Fig. 31 for engineering wiring. If there is the hole for cable tie in wiring route,
please fix the wire with cable tie. Connect the power cord and communication cable to the
corresponding terminal board and grounding screw according to the wiring diagram.
(2) Please be noted that engineering wiring cannot touch the pipe and appliance.
(3) This figure is only applicable for engineering wiring reference of power supply and
communication cable. If there are differences between the figure structure and actual unit,
please refer to the actual unit.
(4) For engineering wiring, please refer to the wiring diagram provided with the unit.
Fig. 31
5 Check Items after Installation and Test Operation
5.1 Check Items after Installation
Check items
Possible conditions due to improper installation
Check
Each part of the unit is installed securely?
Unit may drop, shake or emit noise.
Gas leakage test is taken or not?
Insufficient cooling (heating) capacity.
Unit gets proper thermal insulation or not?
There may be condensation and dripping.
Drainage is smooth or not?
There may be condensation and dripping.
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Unit may have malfunction or components may get
damaged.
Is the electric wiring and pipe connection installed
correctly?
Unit may have malfunction or components may get
damaged.
Unit is securely grounded or not?
Electrical leakage.
Power cord meets the required specification?
Unit may have malfunction or components may get
damaged.
Is the air inlet/outlet blocked?
Insufficient cooling (heating) capacity.
Length of refrigerant pipe and the charging amount
of refrigerant are recorded or not?
The refrigerant charging amount is not accurate.
Binding pieces on compressor feet are removed or
not?
Compressor may get damaged.
Содержание GMV-12WP/A-T
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