Pump-Down Residual Operation - Daikin VRV II RXYQ5MY1B Service Manual

SiE39-404
3.4

Pump-down Residual Operation

3.4.1 Pump-down Residual Operation in Cooling Operation
Actuator
Compressor
Outdoor unit fan
Four way valve
Main motorized valve (EV1)
Subcooling motorized valve (EV2)
Hot gas bypass valve (SVP)
Oil equalization valve (SVO)
Receiver gas discharging valve (SVG)
Non-operating unit liquid pipe stop
valve (SVSL)
Ending conditions
* Actuators are based on RXYQ16M.
3.4.2 Pump-down Residual Operation in Heating Operation
Actuator
Compressor
Outdoor unit fan
Four way valve
Main motorized valve (EV1)
Subcooling motorized valve (EV2)
Hot gas bypass valve (SVP)
Oil equalization valve (SVO)
Receiver gas discharging valve (SVG)
Non-operating unit liquid pipe stop
valve (SVSL)
Ending conditions
* Actuators are based on RXYQ16M.
Function
Master unit operation
210 Hz + OFF + OFF
Fan control
OFF
1400 pls
0 pls
ON
ON
ON
ON
• 5 min.
• Pe<0.5 MPa
or
• Td>110°C
Master unit operation
124 Hz + OFF + OFF
STEP8
ON
0 pls
0 pls
ON
ON
ON
ON
• 30 sec.
• Pe<0.25 MPa
or
• Td>110°C
Special Control
Slave unit operation
OFF
OFF
OFF
0 pls
0 pls
OFF
OFF
ON
ON
Slave unit operation
OFF
STEP5
ON
0 pls
0 pls
OFF
OFF
ON
ON
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