HVAC Journeyman Questions and Correct Answers/ Latest Update / Already Graded

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HVAC Journeyman Questions and
Correct Answers/ Latest Update /
Already Graded
Duct furnaces that convey air out of the Room in which they are

installed Still have return air supplied?


Ans: Return air duct (IMC 601.5)




The use of a corridor for retum is permitted in all of the following

locations except?


Ans: within tenant spaces of 1,000 square feet (93 m2) or less in area

(IMC 1020.6)




Given: A Gas fired furnace with todal input rating of 100,000 Bu/h is

to be in stalled in a room, The minimum combined indoor

combustion air opening sizing that is required into the room Shall

be____ sq in?

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Ans: 50 sq in




Given: A Gas fired furnace with a input of 148,000 Btu is to be

provided with Combustion Air through Horizonal Quets The minimum

size free air opening that must be provided is____sq in?


Ans: 148




The minimum distance from Conbustible materials that is permitted

for a Type L Connecter Pipe sering a residental Gas Water heater

Shall be___in?


Ans: 3in (IMC 503.10.5)




When a wall furnace is installed in wood construction what type gas

vent is permitted?


Ans: Type BW