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R410A DC Inverter VRF V4 Plus Individual Series 50Hz
MCAC-VTSM-2014-04
Key components:
Oil separator: It is used to separate oil from high pressure and high temperature gas refrigerant, which is
pumped out from compressor. The separation efficiency is up to 99%, it makes the oil return back to each
compressor very soon.
Gas-liquid separator: It is used to store the liquid refrigerant and oil; it can protect the compressor from liquid
hammer.
Four-way valve (ST1): It is used to change the refrigerant flow direction; it is closed in cooling mode and
opened in heating mode.
EXV (Electromagnetic Expansion Valve): It is used to adjust refrigerant volume.
o
SV2: It is used to protect compressor. When any compressor discharge temperature is higher than 100
C, SV2
will be open to spray a little liquid refrigerant to cooling compressor, and it will be closed when the discharge
o
temperature is lower than 90
C.
SV3: It is used to return the refrigerant and the oil. SV3 opens regularly.
SV4: It is used to help the oil in oil separator return back to compressor, guarantee the oil balance among
compressors. When the unit is initial power on, SV4 will open 120 seconds, then it will reopen after DC inverter
compressor running 5 minutes and then it will close after DC inverter compressor running 15 minutes. Later,
SV4 will open 3 minutes after DC inverter running 20 minutes regularly.
SV5: It is used to enlarge refrigerant volume to accelerate defrosting speed. In defrosting mode, SV5 will be
open to cut the refrigerant flowing circle, so the defrosting process will take less time, in cooling mode, SV5 will
always be closed.
SV6: It is used to by-pass refrigerant. It will be closed in heating and standby mode. It will be open in forced
cooling and oil return mode. In cooling mode, it will be open or closed according to discharge pressure.
T3: Pipe temperature sensor; T4: Ambient temperature sensor
18
Specifications & Performances
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Troubleshooting
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Do you have a question about the VRF V4 Plus I Series and is the answer not in the manual?
Questions and answers
What the function of alphabet given in enc3 like abcdefg
In the Midea Series, ENC3 is used for setting the number of indoor units. The alphabet values in ENC3 correspond to numeric values as follows:
- 0–3: for indoor units 0–15
- 9–C: for indoor units 16–31
- 9–C: also mentioned again, possibly for another range
These alphabet values represent specific ranges of indoor unit numbers.
This answer is automatically generated