Why are the 90 percent condensing furnaces unique?
A) The flue gas affects the venting material at a greater-than-normal rate.
B) The venting of this type of furnace is made of PVC and is easy to seal airtight.
C) The flue gas is excessively hot and can cause fires if improperly used.
D) The venting material is rare, as it is no longer manufactured due to defects.
B
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The triac is a PNPN junction connected parallel to a(n) ____________________ junction.
Fill in the blank(s) with the appropriate word(s).
While starting the motor, 276 amperes are flowing. With a 12-volt battery, what is the resistance of the starting motor? Round to the nearest hundredth ohm.
A. 0.03 B. 0.04 C. 0.05 D. 0.06
When maintaining hard and soft surface flooring in a sustainable way ___________
A. carpets should be shampooed frequently and floors should be cleaned and waxed often B. use information provided by the Carpet and Rug Institute, US EPA, and Green Seal C. Both A and B D. none of the above
What is the standard AHRI design condition used for rating unitary air conditioning equipment?
What will be an ideal response?