The following major changes have been made to the FSEC solar thermal standards. The list below briefly defines the changes and lists the section within the applicable standard that addresses the listed change.

FSEC Standard 101 Operation of the Solar Thermal Collector Certification Program

1. ISO qualification tests may be used instead of standard FSEC tests (5.1.1)
2. Test data for FSEC certification cannot be greater than 20 years old (5.1.4)
3. Collectors manufactured by a Private Labeler must be tested (5.1.5)
4. Testing laboratories must be ISO accredited (5.1.6)
5. Second order glazed collector performance equation now is ISO form (7.4.1.1)
6. Unglazed collector performance equation now includes the effect of long wave radiation and wind (7.4.2.1)
7. FSEC will conduct a field or manufacturer’s facility inspection every two to four years (6.1.2)
8. An annual fee to maintain FSEC collector certification listing will be $100 per supplier plus $25 per certified collector. (Fee Schedule)
9. Testing with the ISO qualification option will be:
   -$4,000 for glazed collector
   -$4,500 for unglazed collector

FSEC Standard 102 Test Methods and Minimum Standards for Certifying Solar Thermal Collectors

1. Ambient temperature restrictions added to pressure test (5.3.3.1)
2. Pressure test period reduced to 10 minutes (5.3.3.1)
3. Exposure test wet stagnation criteria expanded (5.4.1)
4. Thermal shock/water spray test will be conducted using ISO test method (5.5)
5. Thermal shock/cold fill test will be conducted using ISO test method (5.6)
6. Collector time constant test will be conducted using ISO test method (5.7)
7. Thermal performance test method for glazed collectors will be conducted using ISO test method (5.9.1)
8. Thermal performance test method for unglazed collectors will be conducted using ISO test method (5.9.1)
9. Incident Angle Modifier test will be conducted using ISO test method (5.10)