To ensure that the M2 dumps PDF format remains up to date, the International Code Council M2 questions in it are regularly revised to reflect any modifications to the M2 exam content. This commitment to staying current and aligned with the M2 Exam Topics ensures that candidates receive the Commercial Mechanical Inspector (M2) updated questions.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Exhaust & Ventilation Systems | 20% | - Ventilation rates and outdoor air requirements - Hazardous and special exhaust systems - Makeup air systems - Commercial kitchen exhaust systems |
| Topic 2: Heating, Cooling & Water Heaters | 18% | - Solar thermal systems - Boilers and hydronic systems - Heat pumps and cooling equipment - Water heaters and storage tanks - HVAC equipment installation and clearance |
| Topic 3: Combustion Air | 8% | - Air supply and venting - Confined spaces and equipment rooms - Combustion air requirements |
| Topic 4: General Administration | 18% | - Plan review and documentation - Permits and inspections - Manufacturer's instructions and listings - Code authority and enforcement |
| Topic 5: Duct Systems | 12% | - Dampers and access doors - Insulation and sealing - Duct construction and materials - Duct installation and supports |
| Topic 6: Chimneys & Vents | 14% | - Clearances and termination requirements - Vent systems and connections - Factory-built chimneys and vents - Chimney construction and materials |
| Topic 7: Fuel Supply Systems | 10% | - Pressure regulation and overpressure protection - Gas appliances and connections - Fuel gas piping materials and installation - Piping testing and inspection |
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NEW QUESTION # 32
The minimum size for access openings for fire dampers shall be:
Answer: D
Explanation:
The IMC requires access openings for fire dampers to be of a size that allows maintenance and resetting of the damper . The code does not set the answer as same-as-duct, half-diagonal, or a universal 12-inch by 12- inch opening. So Option C is correct.
NEW QUESTION # 33
Air mechanically exhausted from a room must be:
Answer: B
Explanation:
The IMC requires air removed by a mechanical exhaust system to be discharged outdoors to an approved location and not be readily drawn back into the building. That makes D correct. The code does not permit general exhaust air to terminate in an attic, and it does not make filtering or recirculation the default rule for mechanically exhausted air.
NEW QUESTION # 34
When a permit is issued, the code requires that one set of approved plans and specifications be returned to the applicant.
This set of plans and specifications shall be:
Answer: C
Explanation:
Under the ICC administrative provisions used with the mechanical code, one approved set is retained by the code official, and one approved set is returned to the applicant. The returned set must be kept on the site of the building or job while the authorized work is in progress. That directly matches Option A . It does not require return to the architect, filing with the county clerk, or retention for one year after completion.
NEW QUESTION # 35
To test for tightness, a consumer's gas piping should never be filled with:
Answer: B
Explanation:
The IFGC section on test medium states that the test medium shall be air, nitrogen, carbon dioxide or an inert gas , and specifically states that oxygen shall not be used as a test medium . That makes C the correct answer.
NEW QUESTION # 36
Infrared radiant heaters shall be installed:
Answer: B
Explanation:
The ICC mechanical code provision for infrared radiant heaters states that the heaters must be installed with clearances from combustible material in accordance with the manufacturer's installation instructions .
That makes Option D the correct answer. The code does not establish a blanket 6-foot clearance on all sides in this section, and the exam expects the candidate to rely on the listed installation requirements for the appliance.
NEW QUESTION # 37
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