0 rps
A rps or less
More than A rps, but B rps or less
More than B rps
Decision speed
0 rps
A rps
A rps to B rps
B rps
Indoor compressor command total speed value
Model
A
B
20 rps
120 rps
SCM80ZM-S1
20 rps
120 rps
SCM71ZM-S1
Values of A, B
(a) Capacity control
(i) Indoor unit SRK
**
ZSX models only
Model
Capacity
SCM80ZM-S1
1.8
̾
9.2 kW
SCM71ZM-S1
1.8
̾
8.8 kW
Capacity control is within the range shown above. If demand capacity of the indoor units exceeds the maximum capacity
of the outdoor unit, the demand capacity will be proportionally distributed.
(b) Outdoor compressor speed control
Model
Capacity
SCM80ZM-S1
1.8
̾
8.7 kW
SCM71ZM-S1
1.8
̾
8.3 kW
(ii) Indoor unit except SRK
**
ZSX models
Functional
components
Operation
Command speed
Indoor
unit fan
Compressor
Outdoor unit fan
Electronic
expansion valve
ON
According to command speed
According to outdoor unit speed
According to decision
speed
0
(All indoor units)
OFF
According to stop mode
According to mode switching
OFF
0
(Thermostat off units)
ON
All closed
(Thermostat off units)
According to outdoor unit speed
According to mode switching
All closed
(Fan, stop, abnormal stop units)
0
(Fan, stop, abnormal stop units)
0
(All units)
ON
According to command speed
OFF
OFF
According to stop mode
Cooling
Thermostat OFF
(All indoor units)
Thermostat OFF
(Some of indoor units)
Fan, stop, abnormal stop
(Some of indoor units)
Failure
(Outdoor unit)
Fixed
Automatic
Multi-operation rpm calculated based
on the rpm required for each indoor unit
(2) Operation of major functional components in cooling mode
7.3.2 Outline of cooling operation
(1) Summary
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194
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'17 • SCM-T-225