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2027 International Mechanical Code
Chapter 7
‹ IMC 2027
IMC
2027
2027 International Mechanical Code
Chapter 7
·
Combustion Air
Free preview · 5 of 5 questions
Question 1
1.
Which of the following appliances is specifically exempt from complying with the combustion air requirements of Chapter 7?
Solid fuel-burning room heaters
Commercial oil-fired boilers
Oil-fired hydronic warm-air furnaces
Direct-vent appliances
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Question 2
2.
A contractor is installing a listed solid fuel-burning appliance in a new single-story commercial building. The combustion air for this appliance must be provided in accordance with which of the following?
The appliance manufacturer's installation instructions
The International Fuel Gas Code
The provisions of NFPA 31
The standard requirements of NFPA 211
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Question 3
3.
An oil-fired boiler installed in a commercial mechanical room must be supplied with combustion air in accordance with which standard?
NFPA 31
NFPA 85
NFPA 211
NFPA 54
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Question 4
4.
Where volume, smoke, or fire dampers are installed in combustion air openings serving fuel-burning equipment, how must the dampers be arranged to operate?
They must remain fully open at all times during scheduled building occupancy hours
They must be provided with a manual override switch located adjacent to the equipment
They must be fitted with thermal fusible links rated between 135°F and 165°F
They must be interlocked with the firing cycle to prevent appliance operation when closed
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Question 5
5.
A combustion air duct that is not provided with dampers penetrates fire-resistance-rated construction. What is the required protection method for this duct?
It must be enclosed in a shaft in accordance with the International Building Code
It must terminate within an unconditioned space having a 1-hour fire separation
It must be protected with a listed manual balancing damper at each penetration
It must be wrapped with a listed two-layer fire-resistive duct enclosure system
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