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The best tool for adjusting and setting the pressure on an appliance regulator: a. Manometer b. Velometer c. Psychrometer d. An analyzer correct answers Manometer 3/8 NPS black iron pipe shall? a. Not be used for propane b. Not be used in a concealed location c. Not be used f...
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Add to cartThe best tool for adjusting and setting the pressure on an appliance regulator: a. Manometer b. Velometer c. Psychrometer d. An analyzer correct answers Manometer 3/8 NPS black iron pipe shall? a. Not be used for propane b. Not be used in a concealed location c. Not be used f...
The working pressure differential between the gas meter outlet and the appliance regulator inlet at furthest appliance from meter correct answers Define pressure drop 0.5" w.c. correct answers What is the Max pressure drop >7" w.c. NG 1" w.c. correct answers What is the Max pressure drop...
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Add to cartThe working pressure differential between the gas meter outlet and the appliance regulator inlet at furthest appliance from meter correct answers Define pressure drop 0.5" w.c. correct answers What is the Max pressure drop >7" w.c. NG 1" w.c. correct answers What is the Max pressure drop...
What does an Aquastat do? correct answers Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? correct answers Automatic safety control (normally closed). Senses water level in the boiler. If le...
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Add to cartWhat does an Aquastat do? correct answers Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? correct answers Automatic safety control (normally closed). Senses water level in the boiler. If le...
What does an Aquastat do? correct answers Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? correct answers Automatic safety control (normally closed). Senses water level in the boiler. If le...
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Add to cartWhat does an Aquastat do? correct answers Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? correct answers Automatic safety control (normally closed). Senses water level in the boiler. If le...
If inadequate combustion air is in a tightly sealed house what happens? correct answers Potenially leads to severe indoor air quality problems When changing a part of the heating system what 4 factors must the gas technician take into account? correct answers The building envelope, external envir...
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Add to cartIf inadequate combustion air is in a tightly sealed house what happens? correct answers Potenially leads to severe indoor air quality problems When changing a part of the heating system what 4 factors must the gas technician take into account? correct answers The building envelope, external envir...
What is a typical electrical connection for a gas range? correct answers 120 V 60 HZ, two-wire with a ground. What must a flex connector be connected to? What else must be there? correct answers Must be connected to rigid pipe with a shut off valve immediately upstream of the connector. What t...
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Add to cartWhat is a typical electrical connection for a gas range? correct answers 120 V 60 HZ, two-wire with a ground. What must a flex connector be connected to? What else must be there? correct answers Must be connected to rigid pipe with a shut off valve immediately upstream of the connector. What t...
What are the two main purposes of gas pressure regulators? correct answers To reduce and maintain the downstream pressure and to provide pressure to appliances or burners What are the four categories of a gas pressure regulators? correct answers First stage/Service Regulator, Line Pressure Regula...
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Add to cartWhat are the two main purposes of gas pressure regulators? correct answers To reduce and maintain the downstream pressure and to provide pressure to appliances or burners What are the four categories of a gas pressure regulators? correct answers First stage/Service Regulator, Line Pressure Regula...
What are the three functions of a regulator? correct answers 1. To reduce and maintain constant downstream pressure 2. To allow pressure adjustments to the appliance 3. To provide a smoother even flow What are the three operating forces of a gas regulator? correct answers 1. Measuring element (...
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Add to cartWhat are the three functions of a regulator? correct answers 1. To reduce and maintain constant downstream pressure 2. To allow pressure adjustments to the appliance 3. To provide a smoother even flow What are the three operating forces of a gas regulator? correct answers 1. Measuring element (...
What are the factors governing a conversion? correct answers Availability of gas, efficiency if converted, access to combustible air, satisfactory ductwork, can a chimney liner be installed, clearances from combustibles, manufactures recommendations, if a water heater is also being installed (common...
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Add to cartWhat are the factors governing a conversion? correct answers Availability of gas, efficiency if converted, access to combustible air, satisfactory ductwork, can a chimney liner be installed, clearances from combustibles, manufactures recommendations, if a water heater is also being installed (common...
If the venting on a high efficiency furnace runs through unheated spaces, what must be done? correct answers Insulate piping to prevent Condensation and freezing What is condensate drain piping used for? correct answers Dispose Liquid waste Once the furnace is installed, what are the gas techn...
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Add to cartIf the venting on a high efficiency furnace runs through unheated spaces, what must be done? correct answers Insulate piping to prevent Condensation and freezing What is condensate drain piping used for? correct answers Dispose Liquid waste Once the furnace is installed, what are the gas techn...
What prevents the water in a hydronic heating system from boiling into steam when the system is operating above the atmospheric temperature? correct answers Pressurization of the system List the four subsystems of a hydronic space heating system? correct answers Heat Source, Circulation system, H...
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Add to cartWhat prevents the water in a hydronic heating system from boiling into steam when the system is operating above the atmospheric temperature? correct answers Pressurization of the system List the four subsystems of a hydronic space heating system? correct answers Heat Source, Circulation system, H...
What pressure does atmospheric pressure exert on the earth at sea level? correct answers 14.74 psia What two things mean you must bring in combustion air. correct answers 1. Total BTU of appliance if greater than 400000 you must bring in combustion air. 2. If house is tight construction you also...
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Add to cartWhat pressure does atmospheric pressure exert on the earth at sea level? correct answers 14.74 psia What two things mean you must bring in combustion air. correct answers 1. Total BTU of appliance if greater than 400000 you must bring in combustion air. 2. If house is tight construction you also...
Why are air cleaners installed ahead of heating or cooling coils and air conditioners? correct answers To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? correct answers Dirty Air Filter and Incorrect Air Filter Na...
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Add to cartWhy are air cleaners installed ahead of heating or cooling coils and air conditioners? correct answers To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? correct answers Dirty Air Filter and Incorrect Air Filter Na...
A room heater installed in either a sleeping area or public area shall be: A. direct vent only B. equipped with a regulator C. equipped with a fan D. equipped with an on / off switch on the wall correct answers B What type of vent must be used when the vent of a wall furnace will be concealed...
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Add to cartA room heater installed in either a sleeping area or public area shall be: A. direct vent only B. equipped with a regulator C. equipped with a fan D. equipped with an on / off switch on the wall correct answers B What type of vent must be used when the vent of a wall furnace will be concealed...
1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? correct answers 3" 2) Amp meter can read what? correct answers Conductor magnetic field. 3) What would be the primary voltage of a furnace? correct answers 120/1/60. 4) What is the function of an...
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Add to cart1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? correct answers 3" 2) Amp meter can read what? correct answers Conductor magnetic field. 3) What would be the primary voltage of a furnace? correct answers 120/1/60. 4) What is the function of an...
Fuses serving motor circuits should be: a) Quick blow type b) Time delay type c) Oversized by 2.5% d) Oversized by 3.5% correct answers b) Time delay type. As the length of on elecincal run increases, it may be necessary to; a) increase the wire size, b) Use a dilerent moe o, conducior ...
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Add to cartFuses serving motor circuits should be: a) Quick blow type b) Time delay type c) Oversized by 2.5% d) Oversized by 3.5% correct answers b) Time delay type. As the length of on elecincal run increases, it may be necessary to; a) increase the wire size, b) Use a dilerent moe o, conducior ...
An inline Ammeter is connected correct answers In series with the device being checked As the length of an Electrical run increases, it may be necessary to correct answers Increase the Wire Size Fuses serving motor circuits should be of correct answers Time Delay Type Millivolt wiring shoul...
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Add to cartAn inline Ammeter is connected correct answers In series with the device being checked As the length of an Electrical run increases, it may be necessary to correct answers Increase the Wire Size Fuses serving motor circuits should be of correct answers Time Delay Type Millivolt wiring shoul...
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