FF_Q22_WaterHeatingSystem Version 7.1.1

PHOTO REQUIRED of Water Heating System nameplate/model number and controls per MINHERS Chapter 9. Raters/RFIs are responsible for documenting reasons for missing photos. Rater/RFI verifies and documents the correct water heating system(s) types, fuel types, energy factors, recovery efficiencies, tank size, tank insulation, locations, and number of units.

• Energy Factor or UEF are generally found from manufacturer specs, AHRI, or ENERGY STAR databases.
• DHW tank size (gallons) can generally be captured from nameplate information.
• Location of the DHW equipment can affect the efficiency of the distribution system.

SCORING:

• Satisfactory: No errors in water heating system verification
• 1: one to two minor errors in water heating verification (listed below) (this is per system)
• 2: NO PHOTO OR three to four minor errors in water heating verification (listed below) OR one to two major errors in water heating verification (listed below) (this is per system)
• 3: Incorrect number of units OR five or more minor errors in water heating verification (listed below) OR three or more major errors in water heating verification (listed below) (this is per system)

Minor Water Heating Verification Errors:

• Modeled EF/UEF value off by 0.01 to 0.03 from AHRI Certificate or supporting docs (If UEF is listed on backup, ensure Rater or RFI converted to EF correctly):
• Modeled water tank capacity off by 3 gal to 5 gal from AHRI Certificate or supporting docs:
• Modeled input capacity off by 3 kBtu/h to 5 kBtu/h from AHRI Certificate or supporting docs:
• Modeled Recovery Efficiency is off by 3% to 5% from AHRI Certificate or supporting docs:
• % Water Heating Load Served off by 3% to 5%:
• Incorrect location identified for Water Heating System:

Major Water Heating Verification Errors:

• Incorrect equipment type identified:
• Incorrect fuel type identified:
• Modeled EF/UEF value off by greater than 0.03 from AHRI Certificate or supporting docs (If UEF is listed on backup, ensure Rater or RFI converted to EF correctly):
• Modeled water tank capacity off by greater than 5 gal from AHRI Certificate or supporting docs:
• Modeled input capacity off by greater than 5 kBtu/h from AHRI Certificate or supporting docs:
• Modeled Recovery Efficiency is off by greater than 5% from AHRI Certificate or supporting docs:
• % Water Heating Load Served off by greater than 5%: