Gas Fitter Practice · Question
What is the primary characteristic of an appliance categorized as a 'direct vent' appliance?
Direct vent appliances are sealed combustion units that draw all air for combustion directly from outdoors and exhaust all combustion products back outdoors, co
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Question: What is the primary characteristic of an appliance categorized as a 'direct vent' appliance?
Answer options: ✅ It draws all combustion air from outdoors and vents combustion products outdoors.
- It draws combustion air from the conditioned space and vents outdoors.
- It uses a power venter to assist combustion air intake.
- It has an open combustion chamber.
Correct answer: It draws all combustion air from outdoors and vents combustion products outdoors.
Explanation: Direct vent appliances are sealed combustion units that draw all air for combustion directly from outdoors and exhaust all combustion products back outdoors, completely isolated from the indoor air.
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- What is the maximum allowed pressure for a propane system supplying a residential appliance?
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