[Equest-users] Supply CFM based on heating / cooling mode

[ToddGibson at Eaton.com]

Hi,

 

I'm trying to specify separate, constant CFMs for heating and cooling
mode operation (Ex:  5,000 Heating & 7,500 Cooling).   

 

The system I created is Variable Air Volume which serves multiple
thermal zones.

The Fan Flow Parameter MIN-FLOW-RATIO is set to 1.00.  I read this as
the minimum supply CFM during cooling mode.

The Fan Flow Parameter HMAX-FLOW-RATIO = 5000/7000.  I read this to be
the maximum supply CFM during heating mode.

The Fan Flow Parameter HMIN-FLOW-RATIO = 5000/7000 -0.01.  I read this
to be the minimum supply CFM during heating mode.

 

But from the hourly report the CFM supplied, defined by SUPPLY-FLOW =
7,500, is the cooling quantity during heating mode when I would have
expected it to be 5,000.  As far as I can tell no flows are specified at
the zone level that would override it.  Any thoughts on things to look
at would be greatly appreciated.

Thanks, Todd

 

 

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