INTERNACHI ADVANCED HVAC EXAM
What does upflow, downflow, horizontal refer to - Correct Answers -Direction of air
travel in a furnace
What about 80-85% efficiency furnaces? What was added - Correct Answers -Fan
assisted combustion and intermittent pilot, pressure switches and control boards and
sealed burner chamber.
90-95% efficient furnace contains what - Correct Answers -Condensing system, and
draft inducing fan
Type B vent for - Correct Answers -Gas systems
L Vent - Correct Answers -Oil burners
MERV Rating - Correct Answers -Min Efficiency Rating Value- ASHRAE test for air
filters
Pressure reducing valve for water boilers set to what - Correct Answers -12-15 PSI
Indirect Water Heater - Correct Answers -Uses a loop from a boiler that goes into hot
water tank and heats water
Tankless coil hot water heater - Correct Answers -coil runs inside boiler
Relief pressure for most water boilers in TPR - Correct Answers -30 PSI
Can flexible gas piping go through walls? - Correct Answers -No generally limited 3-6
feet
What is a universal furnace? - Correct Answers -Can be upflow, downflow, due to fan
assist
where are burners located on an upflow furnce? Downflow? - Correct Answers -Upflow-
Middle, Downflow, Bottom
BTU - Correct Answers -British Thermal Unit, Energy takes to raise temp of 1 pound
water 1 degree F
What does upflow, downflow, horizontal refer to - Correct Answers -Direction of air
travel in a furnace
What about 80-85% efficiency furnaces? What was added - Correct Answers -Fan
assisted combustion and intermittent pilot, pressure switches and control boards and
sealed burner chamber.
90-95% efficient furnace contains what - Correct Answers -Condensing system, and
draft inducing fan
Type B vent for - Correct Answers -Gas systems
L Vent - Correct Answers -Oil burners
MERV Rating - Correct Answers -Min Efficiency Rating Value- ASHRAE test for air
filters
Pressure reducing valve for water boilers set to what - Correct Answers -12-15 PSI
Indirect Water Heater - Correct Answers -Uses a loop from a boiler that goes into hot
water tank and heats water
Tankless coil hot water heater - Correct Answers -coil runs inside boiler
Relief pressure for most water boilers in TPR - Correct Answers -30 PSI
Can flexible gas piping go through walls? - Correct Answers -No generally limited 3-6
feet
What is a universal furnace? - Correct Answers -Can be upflow, downflow, due to fan
assist
where are burners located on an upflow furnce? Downflow? - Correct Answers -Upflow-
Middle, Downflow, Bottom
BTU - Correct Answers -British Thermal Unit, Energy takes to raise temp of 1 pound
water 1 degree F
