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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Fuel Supply Systems | 10% | - Gas appliances and connections - Piping testing and inspection - Pressure regulation and overpressure protection - Fuel gas piping materials and installation |
| Topic 2: Exhaust & Ventilation Systems | 20% | - Ventilation rates and outdoor air requirements - Commercial kitchen exhaust systems - Makeup air systems - Hazardous and special exhaust systems |
| Topic 3: Combustion Air | 8% | - Confined spaces and equipment rooms - Air supply and venting - Combustion air requirements |
| Topic 4: Chimneys & Vents | 14% | - Clearances and termination requirements - Chimney construction and materials - Vent systems and connections - Factory-built chimneys and vents |
| Topic 5: Duct Systems | 12% | - Duct construction and materials - Dampers and access doors - Insulation and sealing - Duct installation and supports |
| Topic 6: Heating, Cooling & Water Heaters | 18% | - HVAC equipment installation and clearance - Boilers and hydronic systems - Water heaters and storage tanks - Heat pumps and cooling equipment - Solar thermal systems |
| Topic 7: General Administration | 18% | - Code authority and enforcement - Manufacturer's instructions and listings - Plan review and documentation - Permits and inspections |
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NEW QUESTION # 18
Supports for hazardous exhaust duct shall be constructed of:
Answer: C
NEW QUESTION # 19
What is the minimum distance required between a combustion air opening at the exterior of a building and a lot line?
Answer: A
Explanation:
The ICC opening-location rule requires intake openings to be located not less than 10 feet from lot lines or buildings on the same lot . A combustion-air opening taken from the exterior follows that minimum separation rule, so 10 feet is the correct answer. Therefore, Option D is correct.
NEW QUESTION # 20
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 # 21
When a furnace is installed in a 66-inch-high attic, the maximum distance from the passageway access to the furnace shall be _____ ft., measured along the centerline of the passageway.
Answer: C
Explanation:
ICC mechanical access provisions for appliances in attics require the passageway to be not more than 20 feet in length , measured along the centerline of the passageway from the opening to the appliance, where the attic passageway is the standard reduced-height access condition. Since the attic height given is 66 inches, the standard maximum length applies, so Option C is correct. The 50-foot allowance applies only under a different exception where the passageway is unobstructed and at least 6 feet high for its entire length.
NEW QUESTION # 22
Pipe and duct insulation can be used within plenums except:
Answer: D
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 # 23
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