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International Code Council M2 Exam Syllabus Topics:

SectionObjectives
General Administration- Code Scope and Administration
  • 1. Definitions
  • 2. Referenced Standards
  • 3. Permits and Inspections
Duct Systems- Duct Construction
  • 1. Dampers and Protection
  • 2. Materials and Installation
- Air Distribution
  • 1. Duct Insulation
  • 2. Plenums
Ventilation and Exhaust Systems- Ventilation
  • 1. Exhaust Air Systems
  • 2. Mechanical Ventilation
- Commercial Kitchens
  • 1. Kitchen Exhaust Hoods
  • 2. Grease Ducts
Chimneys and Vents- Vent Systems
  • 1. Chimney Clearances
  • 2. Vent Sizing
- Connectors and Terminations
  • 1. Termination Requirements
  • 2. Vent Connectors
Heating and Cooling Systems- Cooling Systems
  • 1. Refrigeration Equipment
  • 2. Cooling Appliances
- Heating Appliances
  • 1. Water Heaters
  • 2. Furnaces
  • 3. Boilers
Combustion Air and Fuel Supply- Fuel Supply Systems
  • 1. Fuel Oil Systems
  • 2. Fuel Gas Piping
- Combustion Air
  • 1. Combustion Air Openings
  • 2. Indoor and Outdoor Air Requirements
Materials and Specifications- Approved Materials
  • 1. Installation Standards
  • 2. Equipment Labeling
Hydronic Piping and Refrigeration- Hydronic Systems
  • 1. Piping Installation
  • 2. Pressure Testing
- Refrigeration
  • 1. Safety Controls
  • 2. Refrigerant Piping

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International Code Council Commercial Mechanical Inspector Sample Questions (Q45-Q50):

NEW QUESTION # 45
Given: The listed clearance is 12 inches.

What would be the reduced clearance to combustibles, in inches, if the millboard is replaced with 24-gauge sheet metal?

Answer: B

Explanation:
For a clearance-reduction system using 24-gauge sheet metal with a ventilated 1-inch air space , the recognized reduction method brings a 12-inch listed clearance down to 4 inches . That matches Option B .
This is also consistent with the protection method shown in the exhibit.


NEW QUESTION # 46
Pipe and duct insulation can be used within plenums except:

Answer: A

Explanation:
For materials such as pipe and duct insulation within plenums, the IMC references ASTM E84 or UL 723 for surface-burning characteristics, along with the flame-spread and smoke-developed limits applicable to plenums. ASTM B84 is not the referenced plenum test standard here, so it is the incorrect condition and therefore the correct exam answer to the "except" question. This makes Option C correct.


NEW QUESTION # 47
Unless listed for a greater or smaller dimension, mechanical draft venting systems shall terminate a minimum of _____ feet below an openable window.

Answer: C

Explanation:
For mechanical draft venting systems, unless the appliance is listed for a different clearance, the vent terminal must be located not less than 4 feet below , 4 feet horizontally from , or 1 foot above any door, operable window, or gravity air inlet into a building. Therefore, the required minimum distance below an openable window is 4 feet , so Option B is correct.


NEW QUESTION # 48
Indoor combustion air shall be provided within:

Answer: A

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 # 49
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 # 50
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