DESIGN ALERT ON CONVERSION OF CHILLERS
TO THE NEW CFC-FREE ALTERNATIVE REFRIGERANTS
RECOMMENDATIONS (cont.):
3. Conversion by original manufacturer is preferred due to reliability of replacement parts,
inspections, and warranties offered, but can be expensive due to sole source (lack of competition).
For a limited competition the work can also be performed by qualified independent contractors
using components made and tested and certified by the original manufacturer. This can save some
money and would be acceptable.
4. For a full open competition a qualified independent contractor can offer his own engineered
conversion at reduced cost, but this should be reviewed very carefully for its appropriateness.
Reliability of parts is very important to avoid problems later on. Watch out for components not made
by the original manufacturer.
5. The components proposed in any option should be made, tested, and certified by the original
manufacturer, and performance of chillers after conversion must be within specified tolerance of the
predicted performance by the original manufacturer.
FOR ADDITIONAL INFOR MATION:
Contact Satish Sehgal at 202.565.5032 in the Standards Service (187C).
18 November 1994
FM-187C-DA19
Previous Page
