Gas Fitter Practice · Question
For a Category I appliance, what is the minimum required clearance from combustible materials for a single-wall vent connector?
Single-wall vent connectors for Category I appliances require a minimum of 6 inches (150 mm) clearance to combustibles to prevent fire hazards.
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Question: For a Category I appliance, what is the minimum required clearance from combustible materials for a single-wall vent connector?
Answer options: ✅ 6 inches (150 mm)
- 1 inch (25 mm)
- 3 inches (75 mm)
- 0 inches (no clearance)
Correct answer: 6 inches (150 mm)
Explanation: Single-wall vent connectors for Category I appliances require a minimum of 6 inches (150 mm) clearance to combustibles to prevent fire hazards.
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