Daikin VRV Inverter K Series Manual page 244

SI-05C.BOOK Page 230 Monday, November 6, 2000 4:13 PM
Outline of Control
4.5.2 When Heating
Oil level between both units is equalized in 2 steps: oil transfer from INV outdoor unit to STD outdoor unit 1,
and STD outdoor unit 1 to INV outdoor unit.
When all three systems are operating, however, oil equalization is not executed because oil separation is
not carried out.
Operation conditions
&
230
2-system operation
At least 20 minutes has elapsed since completing start processing, and at least 20 minutes has elapsed
since oil return.
At least 28 minutes has elapsed since defrost completion.
At least 10 continuous minutes has elapsed since the INV outdoor unit started.
OR INV compressor oil temperature > Te+10˚C
&
At least 3 continuous minutes has elapsed since INV outdoor unit started.
At least A Time has elapsed by total operating time of STD outdoor unit since completion of previous
oil equalization operation.
OR
The standard type 1 compressor has start/stopped and defrost has been executed B Times since
completion of previous oil equalization operation.
Step 1 : Oil collected in inverter type is returned to STD outdoor unit 1.
Compressor Outdoor unit fan Outdoor unit EEV
INV
38 + OFF H + ON
outdoor unit
STD
ON + OFF
H + ON
outdoor unit 1
STD
OFF H + ON
outdoor unit 2
Step 1 complete
Solenoid valve
for oil discharge Hot gas bypass
Low pressure
1000PLS ON
protection control
Low pressure
0 PLS OFF
protection control
0 PLS OFF ON
5 minutes elapse
: http://splitoff.ru/tehn-doc.html
SiE-05C
(k:kg/cm²)
Tc > 55˚C
Stop
Oil return
operation
Return to
normal control
(VF112)
Functions PLUS Series