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| Section | Objectives |
|---|---|
| Topic 1: Heating and Cooling Systems | - Cooling Systems
|
| Topic 2: Chimneys and Vents | - Vent Systems
|
| Topic 3: General Administration | - Code Scope and Administration
|
| Topic 4: Ventilation and Exhaust Systems | - Ventilation
|
| Topic 5: Hydronic Piping and Refrigeration | - Hydronic Systems
|
| Topic 6: Combustion Air and Fuel Supply | - Combustion Air
|
| Topic 7: Duct Systems | - Duct Construction
|
| Topic 8: Materials and Specifications | - Approved Materials
|
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NEW QUESTION # 48
Supports for hazardous exhaust duct shall be constructed of:
Answer: A
Explanation:
Hazardous exhaust systems are regulated under the IMC provisions for special exhaust because they handle potentially dangerous fumes, vapors, dusts, or other contaminants. The code requires the duct system and its support components to be suitable for that hazard level, and supports for hazardous exhaust duct must be constructed of noncombustible material . That is why Option C is correct. Plastic and fibrous supports would not satisfy the required fire and safety performance, and UL 181 applies to certain factory-made air ducts and connectors, not as the governing support-material rule for hazardous exhaust duct supports.
NEW QUESTION # 49
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: C
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 ÷ 1,000 = 200
200 × 4 = 800 cfm
So the correct answer is C
NEW QUESTION # 50
An equipment shutoff valve shall be in the same room and not more than how many feet away from the appliance?
Answer: A
Explanation:
The IFGC requires the appliance shutoff valve to be located in the same room as the appliance and within
6 feet of the appliance . Therefore, the correct answer is A .
NEW QUESTION # 51
What is the minimum distance required between a combustion air opening at the exterior of a building and a lot line?
Answer: C
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 # 52
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: D
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 # 53
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