A/C performance data for lower air flow

[cpjeffc]

I am working on a heat load calculation for an HVAC system. The system is installed and operational, so I am revising the calculation to include new heat loads in the area so that I may determine that the existing HVAC system is capable of adequately cooling the area.

The problem is, that the previous revision of the calculation I am working with seems to have been wrong. So I am starting it fresh.

Vendor information for the A/C unit provides cooling performance data for cooling at 2,700 cfm, 3,000 cfm, and 3,300 cfm; however due to a supply side fire damper, flow is restricted to 1,700 cfm. Is there a way to calculate the Total Cooling and Sensible Cooling for a lower flowrate, given the same outside air and return air conditions?

I have linked the PDF for our A/C unit.

Thanks in advance for any help.

 

[317069]

cfm is load calculation output not input.
you calculate your load first then you define the cfm required.
after that you check unit data or talk with unit munufucturer.
but I didn't understand that you are not able to go over 1700 cfm because of fire damper?