Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 141

2) If multiple indoor units are going to be added.
Decision frequency
Outdoor unit frequency
Solenoid valve
(SVA, B, C, D)
[Operating units]
Solenoid valve
(SVA, B, C, D)
[Stopped → Operating units 1]
Solenoid valve
(SVA, B, C, D)
[Stopped → Operating units 2]
Solenoid valve
(SVA, B, C, D)
[Stopped → Operating units 3]
Solenoid valve
(SVA, B, C, D)
[Stopped units]
Electronic expansion valve
(EVA, B, C, D)
According to decision frequency
[Operating units]
Electronic expansion valve
(EVA, B, C, D)
[Stopped → Operating units 1]
Electronic expansion valve
(EVA, B, C, D)
[Stopped → Operating units 2]
Electronic expansion valve
(EVA, B, C, D)
[Stopped → Operating units 3]
Electronic expansion valve
(EVA, B,C, D)
[Stopped units]
Outdoor fan According to decision frequency
Solenoid valve
(SVDf)
Stopped unit ON 1 Stopped unit ON 2
(Within 2 minutes of 1 ON)
16 Hz
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
2 minutes
Stopped unit ON 3
Between 2 minutes and 2 minutes
30 seconds after 1 ON
All opened
According to 16 Hz
75 pulses
According to 16 Hz
75 pulses
75 pulses
75 pulses
30 seconds
SCM-HG (4 room)
According to
decision
frequency Hz
According to
decision
frequency Hz
According to
According to decision
16 Hz frequency Hz
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