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| Section | Objectives |
|---|---|
| Topic 1: Ventilation and Indoor Air Quality | - Ventilation requirements
|
| Topic 2: Mechanical Appliances and Equipment | - Boilers, furnaces, and water heaters
|
| Topic 3: Fuel Gas Systems | - Gas piping and appliance installation
|
| Topic 4: HVAC Systems and Equipment | - Heating and cooling systems
|
| Topic 5: Mechanical Code (IMC) Fundamentals | - International Mechanical Code application
|
| Topic 6: General Administration and Mechanical Inspection Practice | - Code enforcement procedures and inspector responsibilities
|
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NEW QUESTION # 39
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: A
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 # 40
All exposed gas piping shall be kept above grade a minimum of _____ inches.
Answer: B
Explanation:
The IFGC rule for above-ground outdoor piping requires piping installed outdoors to be elevated not less than 3 1/2 inches above ground , and where installed across roof surfaces, not less than 3 1/2 inches above the roof surface . Therefore, the correct answer is A .
NEW QUESTION # 41
A low-pressure steam heating boiler is a boiler furnishing a maximum steam pressure of _____ psi.
Answer: A
Explanation:
A low-pressure steam heating boiler is defined as a boiler furnishing steam at pressures not exceeding 15 psi . That matches Option B .
NEW QUESTION # 42
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: C
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 # 43
Unless listed for a greater or smaller dimension, mechanical draft venting systems shall terminate a minimum of _____ feet below an openable window.
Answer: D
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 # 44
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