2015 INTERNATIONAL FUEL GAS CODE EXAM NEWEST 2025 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

2015 INTERNATIONAL FUEL GAS CODE EXAM NEWEST 2025 ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+ A valve designed to activate when fuel gas passing through it exceeds a prescribed flow rate is a . A. Excess flow valve B. Lubricated plug-type valve C. Automatic valve D. Flashback arrestor check valve - CORRECT -A. Excess flow valve definitions page 13 An appliance that operates with a non-positive vent static pressure and with a vent gas temperature that is capable of causing excessive condensate production in the vent is a appliance. A. Category I B. Category II C. Category III D. Category IV - CORRECT -B. Category II definitions page 18 Holes bored in a floor joist shall not exceed their depth. A. 1/8 B. 1/4 C. 1/3 D. 1/2 - CORRECT -C. 1/3 302.3.2 Bored holes shall no be greater than of the stud depth in non-load bearing walls where each bored stud is doubled. A. 65% B. 60% C. 40% D. 25% - CORRECT -B. 60% 302.3.4 Gas appliances shall not be located in a unless it meets one of the approved exceptions. A. Garage B. Attic C. Bathroom D. Laundry room - CORRECT -C. Bathroom 303.3 A single wall mounted unvented natural gas room heater equipped with an oxygen depletion safety system may be installed in a . A. bathroom if it is 6,000 btu's or less B. bathroom if it is 8,000 btu's or less C. bedroom if it is 6,000 btu's or less D. bedroom if it is 8,000 btu's or less - CORRECT -A. bathroom if it is 6,000 btu's or less 303.3 exception 3 Indoor combustion air for gas appliances using the standard method is sized based on cubic feet per 1,000 btu/h of the appliance input rating. A. 50 B. 55 C. 60 D. 70 - CORRECT -A. 50 304.5.1 How many cubic feet of space would be required to use the standard method of combustion air for gas appliances if you had a space with a 60,000 btu fan assisted furnace, 34,000 btu natural draft water heater, and 28,000 btu gas dryer? A. 3,400 cu ft B. 4,800 cu ft C. 6,100 cu ft D. 7,400 cu ft - CORRECT -C. 6,100 cu ft 304.5.1 What would the maximum gas appliance btu input be for an open basement measuring 26'x52' with an 8' ceiling to be able to use the standard combustion air method? A. 216,320 B. 208,120 C. 190,210 D. 180,910 - CORRECT -A. 216,320 304.5.1 When combing spaces on the same story to obtain the required combustion air for gas appliances, each opening shall be sized a minimum 1 sq. in for the total input rating of all gas appliances but not less than sq. in. A. 360 B. 240 C. 120 D. 100 - CORRECT -D. 100 304.5.3.1 The minimum dimension of air openings for combustion air for gas appliances is . A. 3" B. 4" C. 5" D. 6" - CORRECT -A. 3" 304.6 When using two permanent openings to provide combustion air for gas appliances and communicating directly with the outdoors, each opening shall have a minimum free area of 1 sq. in for every total input rating of all equipment in the enclosure. A. 3,000 btu B. 4,000 btu C. 2,000 btu D. 5,000 btu - CORRECT -B. 4,000 btu 304.5.3.1 or 304.6 When installing all gas appliances, combustion air is allowed to utilize one permanent opening commencing within 12" from the top of the enclosure. The opening must be a minimum 1 sq. in for every total appliance input. A. 2,000 btu B. 3,000 btu C. 4,000 btu D. 5,000 btu - CORRECT -B. 3,000 btu 304.6.2 When mechanical combustion air is provided for gas appliances, the combustion air shall be supplied from the outdoors at a rate not less than cfm per 1,000 btu/h of total input rating of all appliances located within the space. A. .25 B. .30 C. .35 D. .40 - CORRECT -C. .35 304.9 Where exhaust fans are installed, air shall be provided to replace the exhausted air. A. combustion B. relief C. transfer D. make up - CORRECT -D. make up 304.9.1 Where the design free area of louvers and grilles are not know, it shall be assumed that wood louvers will have % free area and metal louvers will have % free area. A. 75; 25 B. 25; 50 C. 50; 25 D. 25; 75 - CORRECT -D. 25; 75 304.10 Combustion air ducts for gas appliances shall not be where terminating in an attic. A. screened B. terminated with an elbow C. permitted