1. Reference Figure 10, an example heat pump and design load graph for a variable capacity heat pump on the NEEP database. Match the following terms with the appropriate location on the graph. 1) ____ Design temperature 2) ____ Heat pump minimum capacity line 3) ____ Heat pump maximum capacity line...
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Level 4 of the Combustion Safety module, which focuses on: Understand the remediation options available for making home combustion safe for indoor air appliances
Level 3 of the Combustion Safety module, which focuses on: What is the difference between testing for combustion safety under the worst-case scenario, and the normal operation scenario? Understand how to calculate the volume of indoor air required for safe combustion and ventilation of natural draft...
The _____ has adopted most safety requirements from the National Fuel Gas Code. The _____ has adopted many safety requirements from the National Fuel Gas Code.
What is a dangerous situation where combustion products enter a building from within the combustion or venting system of a vented combustion appliance, caused by backdrafting, blockages in the vents, or leaks within the system? What is the part of a venting system that collectively ejects flue gases...
Which of these is not a proper approach for evaluating combustion safety for gas-fired water heaters, boilers, and furnaces? Evaluate CO concentrations in both the appliance flue and in the occupied space. Assess whether the vent is installed according to code. Operate appliances at low settings to...
At what ambient level of CO can harmful side effects occur? 9 ppm CO 35 ppm CO 70 ppm CO 200 ppm CO All of the above How often should you conduct a combustion safety test? Once every 3 months. Every time there is a change to the heating and ventilation system or after air sealing. Any time a part of...
Why have residential combustion safety tests changed from testing under worst-case conditions to those at a level closer to common household appliance operation?
For a residence with three natural draft Category I vented appliances with natural drafts of 120,000 Btu/hr, 150,000 Btu/hr, and 100,000 Btu/hr, all sharing an indoor airspace with an ACH of 0.5 with a ceiling height of 8 feet, how much indoor surface area is required for these appliances to be...
When assessing a combustion appliance for spillage, how long should the main burner be in operation before making the assessment? 3 minutes 5 minutes 10 minutes 15 minutes Which of the following does not apply to the screening protocol used to assess combustion appliances that use indoor air? Any...
Which conditions for residences do not allow retrofit work to proceed without extensive combustion safety diagnostics or performance-based protocols, similar to those that qualify for appliance zone isolation? All combustion appliances are depressurization resistant. The residence is extremely leaky...
At what concentrations of indoor air ambient CO should a qualified professional be contacted to address the CO contamination due to a permanently installed appliance? Select all that apply. At CO concentrations of 9 ppm to 35 ppm. At CO concentrations of 36 ppm to 69 ppm. At CO concentrations of 70...
Answer the following questions about remediation: When can remediation be implemented in the process of evaluating combustion safety? In the event of combustion safety failure at test-in or test-out, under which circumstance can remediation measures be implemented before needing to contact a trained...
Level 1 of the Combustion Safety Module, which focuses on: What is combustion safety, and what are three good practices to ensure combustion safety for gas-fired natural draft appliances? Knowing the widely adopted fuel gas codes Defining key combustion safety terms as well as knowing the different...
Level 2 of the Combustion Safety module, which focuses on: Understanding the main approaches to evaluating combustion safety Understanding the harmful effects of CO spillage and what they can be done to prevent backdrafting of CO.
The safe operation of space and water heating combustion appliances is critical to occupant health and safety. As we review the factors contributing to appliance vulnerability, we will demonstrate the definitive test used to assess safe operation and share how to identify and possibly address the...