HVAC JOURNEYMAN EXAM 2023-2024 AND PRACTICE EXAM 300 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (100% CORRECT AND VERIFIED ANSWERS) |AGRADE

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?