Daikin ERQ Series, Руководство по обслуживанию

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ESiEN09-06 A Special Control
Function 31
3.2.2 Oil Return Operation in Heating Operation
Outdoor Unit Actuator
Oil return preparation
operation
Oil return operation Post-oil-return operation
Compressor Upper limit control 176 Hz + ON + ON
124 Hz + OFF + OFF
2-steps increase/20sec.
till Pc - Pe>0.4 MPa
Outdoor unit fan
STEP7
or
STEP8
OFF STEP8
Four way valve ON OFF ON
Main motorized valve (EV1) SH control 480 pls 480 pls 55 pls
Subcooling motorized valve (EV2) SH control 0 pls 0 pls
Hot gas bypass valve (SVP) OFF OFF OFF
Accumulator oil return valve (SVO) ON ON ON
Injection (SVT) (RXYQ5P model only) OFF OFF OFF
Ending conditions 170 sec.
4 min.
Ts - Te<5 C
10 sec.
Pc - Pe>0.4MPa
or or
AHU actuator Heating oil return operation
Fan
Thermostat ON unit Field setting
Stopping unit OFF