Determine cooling capacity

Determine cooling capacity by using the following formula:  Btuh = (h2 - h1) x 4.5 x CFM   h1 =  heat content of air from Enthalpy Table corresponding to supply air  wet bulb temperature.*  h2 =  heat content of air from Enthalpy Table  corresponding to return air wet bulb temperature.*  4.5 =  air properties constant  CFM =  cubic feet per minute air calculated, from funnel, temperature rise, or return air method  *   At supply air outlet and inlet indoors record wet bulb and dry bulb temperatures.   (From Enthalpy Table record heat content values that correspond to supply and return air wet bulb temperatures, h1 and h2, respectively) − Verify that system capacity is ± 10% of the equipment manufacturer's rating at the test conditions.
Procedures for Notifying Customer and QCN member of Failed Inspections
When a program required inspection of an installation is made and the installation is not in compliance with program standards, the Inspector will indicate on the Heat Pump Installation Inspection Checklist (TVA 6254T) and on the Work Completion/ Form (TVA 6254T-1) (where applicable) the reason(s) for the failure to pass the inspection. The QCN member may be allowed to correct minor deficiencies while the inspector is on-site. Customer and QCN members must receive a copy of Heat Pump Installation Inspection Checklist. All deficiencies must be corrected and be in compliance within 10 business days. Following corrections by the QCN member, the inspector shall be notified, after which a reinspection shall be scheduled and performed. If, during thi