100% Correct
ASHRAE 62.2 defines the pressurre boundary of a home as which one of the following?
- ANSWER-Primary air enclosure separating indoor and outdoor air
The principal function of a vapor retarder is to reduce moisture flow by which one of the
following? - ANSWER-Diffusion
In which one of the following circumstances should the analyst recommend relocating
the thermal boundary of a home? - ANSWER-Insulation is not in alignment with the
pressure plane
Which one of the following measures would bring an unconditioned hip roof attic inside
the thermal boundary? - ANSWER-Air seal and insulate the attic roof line
Which one of the following is indicated by soot build-up on the burner access opening of
a fuel-fired domestic water heater? - ANSWER-Flame roll-out has occurred
Which one of the following installed measures is not a method for reducing standby loss
in domestic water heating? - ANSWER-Expansion tank on the hot water piping
The scope of work calls for the installation of a 3.0 ton condenser. Which of the
following is true about the equipment shown in the image? - ANSWER-Undersized
How many tons of cooling does the condensing unit shown in the image have? -
ANSWER-2
Which one of the following is MOST LIKELY to be nominal cooling capacity of a central
air conditoning condensing unit with model number CTF-36-11T1? - ANSWER-3.0 tons
The calculated latent load of a building is used to determine the appropriate air
conditioner capacity needed to effectively do which one of the following? - ANSWER-
Remove moisture from the air
Which of the following should the analyst verify prior to air conditoning system
installation when replacement of the system is part of a work scope? - ANSWER-
Replacement air conditioner's capacity is based on the projected cooling load
According to ANSI/BPI-1200, which one of the following is the correct response when a
furnace fails a spillage
, test regardless of CAZ door position and air handler operation? - ANSWER-
Recommend further evaluation or service by a qualified professional
This is a Combustion Air Calculation Worksheet which is used to determine if additional
air is required in the
Combustion Appliance Zone (CAZ). Based on the data provided, is additional air
needed? - ANSWER-Yes, additional air is needed
Which one of the following can be considered a user-operated heating control? -
ANSWER-Set-back thermostat
An analyst must recommend removal of an ANSI-Z21.11-listed unvented heater under
which one of the
following circumstances? - ANSWER-15,000 BTUh heater in a bedroom.
The analyst tests the natural draft furnace under the greatest Combustion Appliance
Zone (CAZ)
depressurization. The furnace fails the spillage test regardless of CAZ door position and
air handler
operation. According to ANSI/BPI-1200, which of the following is the appropriate
response? - ANSWER-Recommend further evaluation by a qualified professional.
Which one of the following actions will resolve spillage at the draft hood of a furnace? -
ANSWER-Replace the existing furnace with a direct vent model
After completing combustion safety testing, the analyst concludes that the natural gas-
fired water heater
fails spillage testing with a CO measurement of 225 ppm air free, and the natural gas-
fired furnace passes
spillage testing with a CO measurement of 40 ppm air free. According to ANSI/BPI-
1200, which one of the
following is the appropriate next step? - ANSWER-Recommend that the water heater be
shut down until it can be serviced by a qualified
According to ANSI/BPI-1200, which of the following is the CO air free limit in the flue
gases of a central forced-
air furnace before action must be taken? - ANSWER-400 ppm
Which one of the following actions is required when air sealing of a house makes it
significantly tighter than
the required whole-building ventilation rate? - ANSWER-Controlled mechanical
ventilation should be present in the home
The analyst observes that the exhaust fan from the gas stove in the kitchen is vented
into the attic. Which