Hvac Journeyman Exam
Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and
retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much less than
the air test. - B. Fitting shall be replaced or repaired and retested. UMC Section 1...
Return air ducts that serve a dwelling unit shall be permitted to be of _____ construction? A.non-
combustible B. combustible C. rated D. none of the above. - ✔✔B. Shall be permitted to be of
combustible type UMC Section 602.2 Ex (1)
Solid fuel-burning appliances _____ be connected to a venting system that serves a gas- or oil-
burningappliance.(A) shall (B) may (C) shall not(D) with special approval may - ✔✔C.
appliances shall not UMC Section 802.5.5.1
Any joint obtained by joining of metal parts with alloys that melt at temperatures higher than
840°F, but lowerthan the melting temperature of the parts to be joined, is a _____ joint.(A)
brazed(B) fused (D) soldered (C) welded - ✔✔A. Is a brazed joint UMC section 2 1 2.0
A vessel or arrangement of piping or tubing in which vaporized refrigerant is liquefied by
removal of heat is a _____.(A) compressor (C) evaporator(B) generator (D) condenser - ✔✔D. A
condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC
Section 2 0 5.0
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