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InRow SC short cycles compressor | Server Room & Data Center Design Best Practices

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InRow SC short cycles compressor

Discussion in Server Room & Data Center Design Best Practices started by ken , 5/31/2012 2:48 PM
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InRow SC short cycles compressor

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  • kcameron_at_staffleasing-peo.com

    During the late spring and early fall of the year we find a period where the InRow SC will spend part of the day cycling. It will run for 5-10 minutes, then shutdown, followed immediatly by a restart. One thing we notice while it is running is that it seldom runs with a cfm below 900 or a load of 5kw. It would seem that it thinks it acheives a setpoint and shutsdown instead of slowing itself down further. But during the restart cycle it spends a bit of time in the 600cfm range but not for long.

    So what range of output/cfm should the unit be able to track??

    I suspect I need to fiddle with the different setpoints more but finding decient directions on how they interact is not easy. My current settings are:

    Cool Setpoint: 73
    Cool Deadband: 5
    Supply Air: 69
    Capacity Control: Proportional
    Fan Pref: Low
    Fan Speed: Automatic
    Config: InRow

    -ken c

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