Gree GMV-VQ680WM/C-X Service Manual page 22

Gree
Category No.
31
Electrical
system
32
33
34
35
36
37
38
Communication
system
39
40
41
42
43
44
45
Indoor unit
installation
46
47
48
Checklist Before GMV6 HR Commissioning
Item
Do the power voltage, phase
sequence, and frequency meet the
unit requirements?
Is the power cable more than 1 m
away from a TV?
Is there any strong electromagnetic
interference, dust, acid and alkaline
gas in the environment where the
unit is located?
Does the communication cable
material meet the unit design
requirements?
Is the communication connection
between outdoor unit modules
correct?
Is the DIP switch of the master unit
of the outdoor unit module correct?
Is the communication between the
outdoor master unit and the indoor
unit correct?
Is the communication connection
between indoor units correct?
Is the communication connection
between the indoor unit and the
wired controller correct?
Is the last communication indoor
unit installed with a communication
build-out resistor?
The communication cable cannot
be laid in the same trough as the
power cable. It is laid separately in
a flame-retardant hard PVC pipe.
The parallel spacing between a
communication cable and a
strong-current cable is greater than
20 cm.
Does the indoor unit drain pipe
have a slope of 1/100?
Does the height of the indoor unit
riser drain pipe meet the
requirements?
Does the indoor unit drain
smoothly?
Is there a U-shaped trap for indoor
unit drainage?
Is there a soft joint at the air outlet
and air return vent of the indoor
unit? Does the return air have a
static pressure box?
Does the indoor unit water pipe
have an emptying port?
Is a "main" label attached to the
wired controller or panel of the main
indoor unit?
GMV6 HR DC Inverter VRF Units Service Manual
Reference Value
The power voltage, phase
sequence, and frequency
are consistent with those on
the unit nameplate, and the
voltage fluctuates within
±10%.
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Serial connection
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20
Qualified Inspector