HVAC JOURNEYMAN EXAM 2023-2024 AND PRACTICE
EXAM 300 QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (100% CORRECT AND VERIFIED
ANSWERS) |AGRADE
HVAC JOURNEYMAN 2023 EXAM
Which of the following is connected to the top port of a reversing valve?
The discharge line of the compressor.
The inlet line of the compressor.
The top of the indoor coil.
The top of the outdoor coil.
Ducts shall be supported with approved hangers at intervals not
exceeding _ feet or by other approved duct support systems designed in accordance with the IBC. 10 Feet chimneys for residential-type or low-heat appliances shall extend at least __ feet above the highest point where they pass through a roof of a
building.
3 Feet
An appliance that operates with a non positive static pressure with a vent
temperature that is capable of causing excessive condensate production
in the vent.
Category 4
Standard method. the minimum required volume shall be _ cubic FT per 1000 btu/h of the appliance input rating. 75 Attics containing appliances the passageway shall not be less that
inches wide.
22
Shutoff valves shall be located in places so to provide _ for operation and shall be installed so as to be protected from damage. Access Type 1 hoods shall be constructed of steel not less that __ inch in
thickness.
.0466
Duct Linings shall be interrupted at the area of operation of a fire
damper and at a minimum of square inches upstream of and 6
inches downstream of electric resistance and fuel-burning heaters in a
duct system.
6
Public garages where Motor Vehicles exceed six feet in height and are
capable of passing under an Appliance, appliances shall be installed a
minimum of feet higher above the floor than the height of the tallest vehicle 8 feet Gas vents shall extend through roof flashing, roof hack or roof thimble and with a listed cap or listed room assembly.
Terminate
In concealed locations where piping other than black or galvanized steel
is installed through holes or notches in wood stoves joist Rafters or
similar members less than 1.5 inches from the nearest edge of the
member, the pipe shall be protected by ___ plates.
shield
Guards shall be provided where appliances equipment fans or other
components that require service in roof hatch openings are located
within _ feet or a roof edge. 10 Feet The guard shall extend not less than inches and just be on each
end of such appliances, equipment fans components, and roof hatch
openings and the top of the Guard shall be located not less than 42
inches above the elevated surface adjacent to the guard
30 inches
the use of gypsum boards to form plenum shall be limited to systems
where they are temperatures do not exceed __ F and the building and
mechanical system design conditions are such that the gypsum board
surface temperature will be maintained above the airstream dew-point
temperature.
125 F
Using table 402.2.1
Using SCH 40 pipe, 50′ in length, .60 specific gravity, and a btuh of
215,000. what is the gas pipe size?