M2 試験問題を無料オンラインアクセス

What is the minimum distance required between a combustion air opening at the exterior of a building and a lot line?

• A.2 feet
• B.10 feet
• C.3 feet
• D.8 feet

Shutoff valves in plastic pipe ground-source heat pump loop systems shall be installed on both sides of which one of the following?

• A.Expansion tanks
• B.Pressure-reducing valves
• C.Change-in-material joints
• D.Heat-fusion joints

All exposed gas piping shall be kept above grade a minimum of _____ inches.

• A.6
• B.3.5
• C.8.5
• D.12

Exhaust is required for which of the following areas?

• A.Prison guard stations
• B.Office break rooms
• C.High school locker rooms
• D.Gambling casinos

Given: single-wall vent, which serves only one appliance, and has a height of 10 feet.
The maximum horizontal length permitted for a 5-inch diameter vent connector serving this vent is _____ feet.

• A.10
• B.7.5
• C.9
• D.5