Online Access Free M2 Exam Questions

The minimum dimension for rectangular air ducts used to supply combustion air for natural draft systems is
_____ inches.

• A.4
• B.2
• C.6
• D.3

Air mechanically exhausted from a room must be:

• A.discharged into the attic.
• B.discharged to the outdoors.
• C.recirculated.
• D.filtered.

For the installation of listed fuel-burning appliances, the required clearances should be found:

• A.by using a calculation based on the Btu/h output rating of the appliance.
• B.on the approved plans and specifications for the building.
• C.in the mechanical code.
• D.on the nameplate of the appliance.

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.5
• B.7.5
• C.9
• D.10

Exhibit:

CEF-5 is a ceiling exhaust fan manufactured by:

• A.Markel
• B.G.E.
• C.Nutone
• D.Carnes