Gree GMV-WQ120WM/A-F, Owner'S Manual

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Water-cooled Heat Recovery DC Inverter VRF
47
Step 19: deliver the product to user and inform user about usage precautions.
5.2.3 Appendix: judgment reference of normal operational parameters
Reference of Debug Parameters of Water-cooled Multi VRF System
No. Debug item Parameter name Unit Reference
1
System
parameters
ODU
Discharge tube
temp. of
compressor 1
℃
(
℉
)

When system compressor starts up, temp. of
discharge tube or casing top in cooling mode is
within 70~95
℃
(158~203
℉
), and at least 5
℃
(9
℉
) higher than system high pressure saturation
temp.; Temp. in heating mode is within 65~80
℃
(149~176
℉
), and at least 5
℃
(9
℉
) higher than
system high pressure saturation temp.

When inverter compressor starts but inverter
compressor 2 stops, the discharge tube
temperature of inverter compressor 2 is almost
the same with ambient temp.
2
Casing top temp.
of compressor 1
℃
(
℉
)
3
Discharge tube
temp. of
compressor 2
℃
(
℉
)
4
Casing top temp.
of compressor 2
℃
(
℉
)
5
Condensing
temp.
℃
(
℉
)

System’s normal condensing temp value is
within 20~25
℃
(68~77
℉
) According to the
change in water temp. and system operational
capacity, condensing temp value is 5~20
℃
(9~36
℉
) higher than water temp. The higher
water temp is, the smaller temp. difference is.

When water temp. is 25~35
℃
(77~95
℉
),
condensing temp value in cooling mode is
30~45
℃
(86~113
℉
).

When water temp is 15~25
℃
(59~7
7 ℉
),
condensing temp value in heating mode is
40~52
℃
(104~125.6
℉
).
6
Evaporating
temp.
℃
(
℉
)

When water temp. is 25~35
℃
(77~95
℉
),
evaporating temp value in cooling mode is
0~8
℃
(32~46.4
℉
).

When water temp is 15~25
℃
(59~77
℉
),
evaporating temp value in heating mode is
5~10
℃
(41~50
℉
).
7
Opening angle of
heating EXV
PLS

In cooling mode, heating electronic expansion
valve remains 3000PLS.

In heating mode, the opening angle of
adjustable electronic expansion valve varies
within 200~2500PLS.
8
Operating freq. of
compressor 1
Hz Varies from 15Hz to 100Hz.
9
Current.
A
According to different operating freq. and different
load, current will vary from 7A to 40A.
of compressor 1
10
IPM temp of
compressor 1
℃
(
℉
)
When water temp is lower than 45
℃
(113
℉
), IPM
temp is below 85
℃
(185
℉
). Highest temp won’t be
above 95
℃
(203
℉
).
11
Compressor 1
driven bus
voltage
V
Normal bus voltage is 1.414 times of power
voltage. For example, if 3-phase power voltage is
220V, then the bus voltage after rectification is:
220V×1.414=311V. It’s normal if actual voltage
varies 15v from the calculated voltage.
12
Operating freq. of
compressor 2(if
exist)
Hz Varies from 15Hz to 100Hz.
13
Current of
compressor 2(if
exist)
A
According to different operating freq. and different
load, current will vary from 7A to 25A.