HVAC Gas Heat Certification Exam (Latest 2024 / 2025 Update) 100% Correct Questions and Verified Answers | Grade A

HVAC Gas Heat Certification Exam
(Latest Update) 100%
Correct Questions and Verified
Answers | Grade A


Question:
A technician wraps a thermostat wire ten times around his clamp-on
ammeter and measures 5.5 amps between R and W terminals on the
thermostat sub-base. He should set the heat anticipator to
Answer:
5.5




Question:
A gas valve with 100% shut-off means
Answer:
Gas to a pilot and manifold is shut-off

,Question:
A gas furnace has an electronic control board. How is the fan cycled during
heating
Answer:
Time




Question:
A primary cause of burner "flashback" is
Answer:
Low manifold pressure




Question:
The reason for a crossover on a gas burner is to
Answer:
Provide smooth lighting of all burners




Question:
A technician needs to run thermostat wire 75 feet. To avoid a voltage drop, the
technician should use
Answer:
#16 AWG

, Question:
A gas furnace has an induced draft fan. Which switch must operated properly
before ignition sequence starts
Answer:
Differential air pressure




Question:
A technician reads 0 Ohms between the common and low speed wires on a
120 VAC furnace motor. From this the technician determines that the winding
is
Answer:
Open




Question:
On his ohmmeter a technician reads infinity between the high and low speed
wires on a 120 VAC furnace motor. What does this indicate
Answer:
Open




Question:
The "bonnet capacity" of a furnace is
Answer:
Furnace output BTU's