SiE-05C
Outline of Control
Functions PLUS Series
229
<In Case of Cooling
Only System>
Oil is moved between inverter outdoor unit and standard outdoor unit 1 units by operating then
simultaneously.
When all three systems are operating, however, oil equalization is not executed because oil separation is
not carried out.
Operation conditions
A Time
&
&
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.
OR
At least 10 continuous minutes has elapsed since standard outdoor unit 1 started.
&
INV compressor oil temperature > Te+10˚C
At least 3 minutes has elapsed since inverter outdoor unit started.
At least A Time has elapsed by total operating time of standard outdoor unit 1 since completion of previous
oil equalization operation.
Compressor
P1 control
ON + OFF
OFF
INV
outdoor unit
STD
outdoor unit 1
STD
outdoor unit 2
Outdoor unit fan
Solenoid valve
for oil discharge
H + ON
ON
Low pressure
protection control
H + ON
ON
Low pressure
protection control
H + ON
OFF
Y7-ON
Discharge temp.
of any unit > 125˚C
or low pressure < 1.5k
5 minutes elapse
Quit
Stop
Oil return
operation
Return to
normal control
Function unit's
solenoid valve
(VF111)
(k:kg/cm²)
16Hp
18Hp
20Hp
24Hp
26Hp
28Hp
30Hp
Cooling
2 hours
2 hours
2 hours
2 hours
2 hours
2 hours
2 hours
SI-05C.BOOK Page 229 Monday, November 6, 2000 4:13 PM
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