Answer the following statement(s) true (T) or false (F)
1. The products of combustion leaving high-efficiency devices contain enough heat to warm the vent system quickly.
2. The gas companies add an odorant called mercaptan as a safety feature and warning property.
3. The proper sizing of vented gas appliances is accomplished by using the National Fuel Gas Code, plumbing codes, and mechanical codes.
4. For fuel gas piping installations, many licensing jurisdictions have moved toward stablishing mechanical licenses separate from plumbing licenses.
5. The odor provided by mercaptan never dissipates.
1. False
2. True
3. True
4. True
5. False
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