Caz & Work Scope

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Caz & Work Scope

  1. 1. Combustion Appliance Zone Testing & Work Scope Rob Moody, OrganicThink Brett Dillon, IBS Advisors RESNET Conference 2011, Orlando FL Quality Passion KnowledgeFriday, March 4, 2011
  2. 2. Friday, March 4, 2011
  3. 3. training! client!interview! gas!leaks! worst!case!depressurization! carbon!monoxide! work!scope! Worst! Carbon! Case! Monoxide! Depressurization!Friday, March 4, 2011
  4. 4. Training • BPA or CHER • RESNET-accredited Training Provider • Trainer has to pass the test • 3 choices: RESNET, BPI or equivalent home performance program (TXHERO)Friday, March 4, 2011
  5. 5. Interview • Occupant has environmental sensitivities • If present, get written disclosure • States “during the period of testing, some amount of dust, particles or soil gases already present in the home may become airborne.” • Ask about petsFriday, March 4, 2011
  6. 6. Gas Leak Testing • Check all fittings & joints in supply lines & appliances • Confirm suspected leaks with leak detection fluid • If found, STOP!Friday, March 4, 2011
  7. 7. Gas Leak TestingFriday, March 4, 2011
  8. 8. Gas Leak TestingFriday, March 4, 2011
  9. 9. Gas Leak Testing Flame Roll-out Gas Leak Located HereFriday, March 4, 2011
  10. 10. Worst Case Depressurization • Only IF combustion appliances are within building envelope • Check for spillage, not backdrafting • Start with smallest Btu appliance firstFriday, March 4, 2011
  11. 11. CAZFriday, March 4, 2011
  12. 12. CAZFriday, March 4, 2011
  13. 13. CAZFriday, March 4, 2011
  14. 14. CAZFriday, March 4, 2011
  15. 15. CAZFriday, March 4, 2011
  16. 16. Process 1. Close exterior doors & 8. Turn on AHU windows 9. Record ∆P wrt outside 2. Close fireplace dampers 10. If +, turn it off 3. Close interior doors 11. If -, close interior doors to 4. Baseline ∆ P rooms that have no returns 5. Baseline CO 12. If fireplace, use BD to exhaust 300 cfm 6. Turn on exhaust fans 13. Record net change in ∆P 7. Record ∆P wrt outside between baseline & worst case depressurizationFriday, March 4, 2011
  17. 17. CAZFriday, March 4, 2011
  18. 18. CAZ Smoke moving up flueFriday, March 4, 2011
  19. 19. Pellet Stoves w- exhaust fans & sealed - 15 Pa vents Atmospheric vented oil - 5 Pa or gas CO < 35 ppmFriday, March 4, 2011
  20. 20. CO Equipment • 0-2,000 ppm • resolution 1 ppm • accuracy + 5 ppm • calibrated annuallyFriday, March 4, 2011
  21. 21. CO TestingFriday, March 4, 2011
  22. 22. COFriday, March 4, 2011
  23. 23. Work Scope • Meet code • Airsealing: CAZ testing end of each workday • Based on: findings, needs & budget, priorities identified, health & safetyFriday, March 4, 2011
  24. 24. Work Scope • ID remedial actions that require prompt attention, affect safety or requires a licensed trade • Clear enough for comparable bids • “The estimated energy use and savings information contained in the audit report does not constitute a guarantee or warranty of actual energy cost or usage.”Friday, March 4, 2011
  25. 25. Emphasis on: • ducts inside enclosure • improve airflow & total system efficiency • upgrades to enclosure • improvements to lighting & appliancesFriday, March 4, 2011
  26. 26. Work Scope: CAZ • Remediate through: • targeted air- & duct-sealing • room pressure balancing • exhaust fan makeup air • appliance replacement • sealed combustion closet • retest • Replace atmospherically vented appliances • Unvented appliances replacedFriday, March 4, 2011
  27. 27. Work Scope: CO • Repair/replace prior to doing any work • CO detector in main area each floor • Oven CO levels > 200 ppm, replacement or repair • CO > 100 ppm, replacement or repairFriday, March 4, 2011
  28. 28. www.willitblend.comFriday, March 4, 2011
  29. 29. Rob Moody www.organicthink.com @organicthink 828-337-0623 rob@organicthink.com Brett Dillon www.ibsadvisorsllc.com @thebrettdillon @ibsadvisorsllc info@ibsadvisorsllc.com 210-448-1106Friday, March 4, 2011

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