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| Section | Weight | Objectives |
|---|---|---|
| Exhaust & Ventilation Systems | 20% | - Hazardous and special exhaust systems - Ventilation rates and outdoor air requirements - Makeup air systems - Commercial kitchen exhaust systems |
| Heating, Cooling & Water Heaters | 18% | - Heat pumps and cooling equipment - Boilers and hydronic systems - HVAC equipment installation and clearance - Water heaters and storage tanks - Solar thermal systems |
| Chimneys & Vents | 14% | - Factory-built chimneys and vents - Clearances and termination requirements - Vent systems and connections - Chimney construction and materials |
| Duct Systems | 12% | - Dampers and access doors - Duct construction and materials - Duct installation and supports - Insulation and sealing |
| General Administration | 18% | - Permits and inspections - Plan review and documentation - Manufacturer's instructions and listings - Code authority and enforcement |
| Combustion Air | 8% | - Confined spaces and equipment rooms - Air supply and venting - Combustion air requirements |
| Fuel Supply Systems | 10% | - Piping testing and inspection - Fuel gas piping materials and installation - Pressure regulation and overpressure protection - Gas appliances and connections |
>> International Code Council M2 Exam <<
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NEW QUESTION # 26
Shutoff valves in plastic pipe ground-source heat pump loop systems shall be installed on both sides of which one of the following?
Answer: C
Explanation:
In the IMC hydronic piping provisions for ground-source heat pump loop systems, shutoff valves are required on both sides of a pressure-reducing valve . That matches D . Heat-fusion joints and change-in-material joints do not trigger this two-sided shutoff-valve requirement.
NEW QUESTION # 27
Supports for hazardous exhaust duct shall be constructed of:
Answer: D
NEW QUESTION # 28
The minimum dimension for rectangular air ducts used to supply combustion air for natural draft systems is
_____ inches.
Answer: C
Explanation:
The IMC combustion-air provisions require openings used for combustion air to have a minimum cross- sectional dimension of 3 inches . Where ducts are used, they must be of the same cross-sectional area as the openings to which they connect. That makes 3 inches the correct answer, so Option B is correct.
NEW QUESTION # 29
The exhibit shows a _____ in. diameter gas line between unit heaters 5 and 8.
Answer: B
Explanation:
Based on the mechanical plan shown in the exhibit, the gas line between unit heaters 5 and 8 is labeled as 1 inch in diameter. Therefore, the correct answer is B.
NEW QUESTION # 30
Infrared radiant heaters shall be installed:
Answer: D
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 # 31
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