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14.15 Demand Control
When the air-conditioner connected to Demand Response Enabling Devices (DRED), the power consumption
especially during peak hours could be controlled.
Relay 1
Relay 2
Relay 3
DRED
AIR-CONDITIONER
DRM1
DRM2
DRM3
COM
Three Demand response modes (DRM) are available
o
DRM1 = Compressor cut off
o
DRM2 = Operate at 50% of rated input power
o
DRM3 = Operate at 75% of rated input power
During DRM, the Power Indicator blinks (3 seconds ON and 0.5 seconds OFF) to indicate the compressor cut off
status.
14.16 Pump down Operation by CN-S
A convenience method to activate pump down operation.
Control start condition:
o
During power standby condition, short CN-S continuously between 1 second and 10 seconds.
Control
stop
condition:
o
480 seconds after pump down operation starts.
o
CN-S is shorted again during pump down operation.
