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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Fuel Supply Systems | 10% | - Gas appliances and connections - Fuel gas piping materials and installation - Piping testing and inspection - Pressure regulation and overpressure protection |
| Topic 2: Combustion Air | 8% | - Combustion air requirements - Air supply and venting - Confined spaces and equipment rooms |
| Topic 3: Duct Systems | 12% | - Duct construction and materials - Dampers and access doors - Duct installation and supports - Insulation and sealing |
| Topic 4: Heating, Cooling & Water Heaters | 18% | - HVAC equipment installation and clearance - Heat pumps and cooling equipment - Boilers and hydronic systems - Solar thermal systems - Water heaters and storage tanks |
| Topic 5: Chimneys & Vents | 14% | - Factory-built chimneys and vents - Vent systems and connections - Clearances and termination requirements - Chimney construction and materials |
| Topic 6: General Administration | 18% | - Manufacturer's instructions and listings - Plan review and documentation - Code authority and enforcement - Permits and inspections |
| Topic 7: Exhaust & Ventilation Systems | 20% | - Makeup air systems - Ventilation rates and outdoor air requirements - Commercial kitchen exhaust systems - Hazardous and special exhaust systems |
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NEW QUESTION # 25
Which of the following is not a required mechanical inspection?
Answer: A
Explanation:
The ICC mechanical administrative inspection sequence includes underground inspection , rough-in inspection , and final inspection as required inspections. An annual system test is not listed as one of the required permit inspections in that section, so Option D is the correct answer. This fits the M2 General Administration content area, which includes permit and inspection administration.
NEW QUESTION # 26
The exhaust outlet for a clothes dryer is required to be equipped with:
Answer: B
Explanation:
The IMC requires clothes dryer exhaust ducts to terminate outside the building and to be equipped with a backdraft damper at the terminal. The code also prohibits screens at dryer terminations because lint can accumulate and obstruct flow. That makes Option A correct and eliminates Option C . The other two choices describe controls not required by the dryer exhaust termination rule.
NEW QUESTION # 27
Indoor combustion air shall be provided within:
Answer: B
Explanation:
For indoor combustion air openings, one opening must commence within 12 inches of the top of the enclosure and one within 12 inches of the bottom . That corresponds to 1 foot of the ceiling and 1 foot of the floor , so Option A is correct.
NEW QUESTION # 28
The minimum rise required for a 10-foot run of vent connector is _____ inches.
Answer: D
Explanation:
Vent connectors must be installed with a minimum rise of 1/4 inch per foot . For a 10-foot run, the required rise is:
10 × 1/4 inch = 2.5 inches .
That equals 2-1/2 inches , so Option D is correct.
NEW QUESTION # 29
Given: A recirculating industrial direct-fired makeup air heater has a rated input of 200,000 Btu/h .
Ventilation air is supplied by separate mechanical means.
Outside ventilation air shall be provided to supply at least _____ CFM.
Answer: D
Explanation:
The applicable provision requires direct-fired industrial air heaters to supply outside ventilation air at a rate of not less than 4 cfm per 1,000 Btu/h of rated input where ventilation air is provided by separate mechanical means. For 200,000 Btu/h , the required outside air is:
200,000 ÷ 1,000 = 200
200 × 4 = 800 cfm
So the correct answer is C
NEW QUESTION # 30
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