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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Fuel Supply Systems | 10% | - Fuel gas piping materials and installation - Pressure regulation and overpressure protection - Piping testing and inspection - Gas appliances and connections |
| Topic 2: Heating, Cooling & Water Heaters | 18% | - HVAC equipment installation and clearance - Water heaters and storage tanks - Solar thermal systems - Boilers and hydronic systems - Heat pumps and cooling equipment |
| Topic 3: General Administration | 18% | - Plan review and documentation - Manufacturer's instructions and listings - Code authority and enforcement - Permits and inspections |
| Topic 4: Chimneys & Vents | 14% | - Clearances and termination requirements - Chimney construction and materials - Factory-built chimneys and vents - Vent systems and connections |
| Topic 5: Combustion Air | 8% | - Combustion air requirements - Air supply and venting - Confined spaces and equipment rooms |
| Topic 6: Exhaust & Ventilation Systems | 20% | - Makeup air systems - Ventilation rates and outdoor air requirements - Hazardous and special exhaust systems - Commercial kitchen exhaust systems |
| Topic 7: Duct Systems | 12% | - Dampers and access doors - Insulation and sealing - Duct construction and materials - Duct installation and supports |
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NEW QUESTION # 34
Horizontal terminations for mechanical draft systems that are adjacent to public walkways shall be located a minimum of _____ feet above grade.
Answer: A
Explanation:
The fuel gas venting provisions state that the exit terminals of mechanical draft systems shall be not less than
7 feet above grade where located adjacent to public walkways. Therefore, A is the correct answer.
NEW QUESTION # 35
Where located on a roof with a 5:12 slope, a level platform shall be provided along the access panel of the furnace at least _____ inches wide.
Answer: C
Explanation:
For appliances on roofs, ICC access provisions require a level platform at the appliance. The platform must be not less than 30 inches in any dimension . For the choices provided, that makes 30 inches the correct answer, which is Option C .
NEW QUESTION # 36
A cooling system with a condensate disposal system:
Answer: A
Explanation:
The ICC mechanical code requires condensate disposal components to be of approved corrosion-resistant material , and the drain line shall not decrease in size from the drain pan connection to the place of disposal.
The code minimum size is 3/4 inch , so the 1/2-inch statement is incorrect, and the code is not limited to PVC only. Also, the slope requirement for horizontal drain piping is not less than 1/8 inch per foot , not 1/4 inch per foot. That makes Option A the only fully correct statement.
NEW QUESTION # 37
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 # 38
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: A
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 รท 1,000 = 200
200 ร 4 = 800 cfm
So the correct answer is C
NEW QUESTION # 39
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M2 practice exam enables applicants to practice time management, answer strategies, and all other elements of the final Commercial Mechanical Inspector (M2) certification exam and can check their scores. The exhaustive report enrollment database allows students to evaluate their performance and prepare for the Commercial Mechanical Inspector (M2) certification exam without further difficulty.
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