2.0201.1 Combustion Appliance Zone (CAZ) Testing

Emergency problems (e.g., ambient gas levels greater than 10% Lower Explosion Limit (LEL), ambient CO CO Carbon monoxide levels that exceed 70 ppm) will be communicated clearly and immediately to the customer, the home shall be evacuated, and appropriate personnel (e.g.: HVAC HVAC Heating, ventilation, and air conditioning technician, utility, emergency services) shall be contacted. ;            

Significant problems (e.g., gas leak less than 10% LEL, ambient CO CO Carbon monoxide levels that exceed 35 ppm but less than 70 ppm) will be communicated clearly and immediately to the customer and appropriate solutions will be suggested 

Examine appliance for signs of damage, misuse, improper repairs, and lack of maintenance 
 

For oil systems that require a draft regulator Draft regulator A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value. Source: National Fire Protection Association 54, 2012 , the presence and operability of it (that draft regulator Draft regulator A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value. Source: National Fire Protection Association 54, 2012 ) will be verified and tested

Combustion venting systems will be inspected for damage, leaks, disconnections, inadequate slope, and other safety hazards

CAZ CAZ Combustion appliance zone depressurization testing will be administered for all atmospherically vented appliances located inside the pressure boundary.  

Depressurization test will include exhaust fans, interior door closure, or duct leakage, or a combination thereof; the test will be done to determine the largest negative pressure per BPI BPI Building Performance Institute, www.bpi.org Standard 1200.

Emergency problems (e.g., ambient gas levels greater than 10% Lower Explosion Limit (LEL), ambient CO CO Carbon monoxide levels that exceed 70 ppm) will be communicated clearly and immediately to the customer, the home shall be evacuated, and appropriate personnel (e.g.: HVAC HVAC Heating, ventilation, and air conditioning technician, utility, emergency services) shall be contacted. ;            

Significant problems (e.g., gas leak less than 10% LEL, ambient CO CO Carbon monoxide levels that exceed 35 ppm but less than 70 ppm) will be communicated clearly and immediately to the customer and appropriate solutions will be suggested 

Examine appliance for signs of damage, misuse, improper repairs, and lack of maintenance 
 

For oil systems that require a draft regulator Draft regulator A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value. Source: National Fire Protection Association 54, 2012 , the presence and operability of it (that draft regulator Draft regulator A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value. Source: National Fire Protection Association 54, 2012 ) will be verified and tested

Combustion venting systems will be inspected for damage, leaks, disconnections, inadequate slope, and other safety hazards

CAZ CAZ Combustion appliance zone depressurization testing will be administered for all atmospherically vented appliances located inside the pressure boundary.  

Depressurization test will include exhaust fans, interior door closure, or duct leakage, or a combination thereof; the test will be done to determine the largest negative pressure per BPI BPI Building Performance Institute, www.bpi.org Standard 1200.