System delays

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The System Delays protect the Modules in the System from excessive wear and damage and keep the modes (cooling, reheat, and dehumidify) from working against each other.

Comp Min ON. The delay begins when the compressor engages and then prevents the compressor from disengaging until the delay has expired. It protects the compressors from rapidly cycling between on and off and pushing all of their lubricating oil out into the refrigerant line.

Caution: Reducing the Comp Min ON delay can shorten the compressor life by causing excessive wear and damage.

Comp Min OFF. The delay begins when the compressor disengages and then prevents the compressor from engaging until the delay has expired. It protects the compressors from rapidly cycling between on and off and pushing all of their lubricating oil out into the refrigerant line.

Caution: Reducing the Comp Min OFFdelay can shorten the compressor life by causing excessive wear and damage.

Cndsr Vlv Dly. The condenser fluid valve close delay begins when the compressors disengage, and then keeps coolant flowing through the heat exchanger until the delay expires. Once the delay expires, the condenser fluid valve closes.

Intrstg Dly. The interstage delay begins when the first compressor (stage 1) in a Module engages. It prevents a second compressor (stage 2) in a System from engaging until the delay has expired.

Start-up Dly. The start-up delay begins when the System is started and initialized. The System cannot begin operation until this delay has expired. Use the start-up delay to restart equipment sequentially in your room after a power loss.

Mode Dly. The start-up delay begins when the blowers start. It allows the sensors to obtain an accurate reading of the room conditions and it allows the System to check for major alarms before engaging environmental control functions.

Communication Loss Shutdown Delay. Set the communication loss shutdown delay. The delay begins when an Expansion Module loses communication with the Main Module of a System. If communication is not restored before the delay expires, the Expansion Module will shut down. Set the delay for up to twenty-four hours, or set the Expansion Modules to continue operating if communication with the Main Module is lost by selecting Disabled.

NetworkAIR FM DX 60 Hz Operation, Maintenance, and Troubleshooting

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American Power Conversion FM, DX manual System delays
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DX, FM specifications

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