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Gree GMV-Pdm450W/NaB-M

Gree GMV-Pdm450W/NaB-M
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DC Inverter Multi
VRF Service Manual
17
PRODUCT
5�2 Piping diagram of GMV-Pdm335W/NaB-M,GMV-Pdm400W/NaB-M,GMV-Pdm450W/NaB-M
(1)
(3)
(5)
(7)
(8)
(9)
(18)
(20)
(19)
(13)
(21)
(14)
(15)
(16)
(17)
(27)
(28)
(26)
(29)
(24)
(23)
(22)
(25)
(12)
(11)
(10)
(6)(6)
(4)(4)
(2)(2)
NO. Name Major Function
1 Inverter compressor(INV)
According to the actual need, the inverter compressor
can adjust its revolution among 30rps~90rps.
2 Standard compressor(STD1/STD2)
When the inverter compressor fails to meet the needs of the
system, the xed-frequency compressor will start together.
3 High pressure switch(for INV)
When the discharge pressure of the inverter compressor
exceeds the upper limit of the high pressure switch,
a feedback signal will be sent out to stop the unit
immediately so as to protect the compressor.
4 High pressure switch(for STD1/ STD2)
When the discharge pressure of the xed-frequency
compressor exceeds the upper limit of the high pressure
switch, a feedback signal will be sent out to stop the
unit immediately so as to protect the compressor.
5 Check valve(for INV)
It is used to prevent the high-pressure reverse gas going into the
inverter compressor at the moment that the compressor stops
so as to avoid abnormal startup next time and other problems.

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