HVAC MASTER EXAM QUESTIONS AND
ANSWERS
Graph: an appliance with horizontal drafting vent, built within 2 walls. What is the
minimum distance from a corner formed by 2 walls perpendicular to each other -
Answer-3'
Insulation pipe inside plenum room, what is the maximum smoke index - Answer-450
Underground duct has the following except - Answer-Has cleaning opening
Adhesive used for a duct liner shall have a maximum flame spread of - Answer-25
Duct can be joint by the following except - Answer-Botled Flange
Chimney used for venting liquid or solid fuel burning appliance now used for gas fired
appliance, what need to be done? - Answer-Clean
Minimum vent connector size - Answer-Equal fuel collar of appliance
Minimum distance vent connect to chimney from lowest portion - Answer-12"
Materials used for fuel liner are all of the following except: - Answer-PVC
Minimum heigh above the highest point of the roof for type L vent - Answer-2'
Venting for appliances is prohibited from passing through which of the following -
Answer-Air-duct
Minimum thickness of 16" connector in medium heat appliance - Answer-12 Gage
Which of the following methods can be used in connectors joints - Answer-Fasten with a
screw
Minimum distance for plume discharge of colling tower above a ventilation inlet to a
building - Answer-5'
Potable water line that delivers makeup water to a hydronic boiler is required to have -
Answer-A hand valve and pressure vacuum breaker
Air filter shall be installed at - Answer-Return air duct
Best way to prevent dirty sock syndrome - Answer-Germicidal light
ANSWERS
Graph: an appliance with horizontal drafting vent, built within 2 walls. What is the
minimum distance from a corner formed by 2 walls perpendicular to each other -
Answer-3'
Insulation pipe inside plenum room, what is the maximum smoke index - Answer-450
Underground duct has the following except - Answer-Has cleaning opening
Adhesive used for a duct liner shall have a maximum flame spread of - Answer-25
Duct can be joint by the following except - Answer-Botled Flange
Chimney used for venting liquid or solid fuel burning appliance now used for gas fired
appliance, what need to be done? - Answer-Clean
Minimum vent connector size - Answer-Equal fuel collar of appliance
Minimum distance vent connect to chimney from lowest portion - Answer-12"
Materials used for fuel liner are all of the following except: - Answer-PVC
Minimum heigh above the highest point of the roof for type L vent - Answer-2'
Venting for appliances is prohibited from passing through which of the following -
Answer-Air-duct
Minimum thickness of 16" connector in medium heat appliance - Answer-12 Gage
Which of the following methods can be used in connectors joints - Answer-Fasten with a
screw
Minimum distance for plume discharge of colling tower above a ventilation inlet to a
building - Answer-5'
Potable water line that delivers makeup water to a hydronic boiler is required to have -
Answer-A hand valve and pressure vacuum breaker
Air filter shall be installed at - Answer-Return air duct
Best way to prevent dirty sock syndrome - Answer-Germicidal light
