introduction to heating
. The heat transfer process in which warm air rises and cool air falls is _____. - answer
convection
In order for combustion to occur, there must be _____. - answer. fuel, heat, and oxygen
If an induced-draft gas burner produces a flame that is completely blue, or blue with tiny
yellow tips, it is an indicator of _____. - answer normal operation
Incomplete combustion is the result of _____. - answer a lack of oxygen
One of the byproducts of incomplete combustion is _____. - answer carbon monoxide
Which furnace configuration does the multipoise furnace most closely match as
delivered from the factory? – answer up flow
Flame rectification is used on a(n) _____. - answer. spark igniter
The function of a thermocouple in a gas valve is to _____. - answer convert heat from
the pilot into an electric current
The burner gas input rate can be varied in 1 percent increments by using _____. -
answer a modulating gas valve
The high-temperature limit switch mounted above or beside the heat exchanger of a gas
furnace should cycle open if _____. - answerthe blower fails to operate
It is acceptable to vent a gas appliance through a masonry chimney as long as _____. -
answera tile or metal liner of the correct size is used
In which of these situations is it necessary to use outdoor air for combustion on an
induced-draft furnace? - answerWhen there are chemicals near the furnace.
The boiler system component that monitors water temperature and possibly controls
water circulation is the _____ - answer. aquastat
. When the outdoor temperature falls below the balance point, an air-to-air heat pump
_____. - answer. requires supplemental heat
Which of these components is unique to the heat pump? - answerDefrost timer
. The heat transfer process in which warm air rises and cool air falls is _____. - answer
convection
In order for combustion to occur, there must be _____. - answer. fuel, heat, and oxygen
If an induced-draft gas burner produces a flame that is completely blue, or blue with tiny
yellow tips, it is an indicator of _____. - answer normal operation
Incomplete combustion is the result of _____. - answer a lack of oxygen
One of the byproducts of incomplete combustion is _____. - answer carbon monoxide
Which furnace configuration does the multipoise furnace most closely match as
delivered from the factory? – answer up flow
Flame rectification is used on a(n) _____. - answer. spark igniter
The function of a thermocouple in a gas valve is to _____. - answer convert heat from
the pilot into an electric current
The burner gas input rate can be varied in 1 percent increments by using _____. -
answer a modulating gas valve
The high-temperature limit switch mounted above or beside the heat exchanger of a gas
furnace should cycle open if _____. - answerthe blower fails to operate
It is acceptable to vent a gas appliance through a masonry chimney as long as _____. -
answera tile or metal liner of the correct size is used
In which of these situations is it necessary to use outdoor air for combustion on an
induced-draft furnace? - answerWhen there are chemicals near the furnace.
The boiler system component that monitors water temperature and possibly controls
water circulation is the _____ - answer. aquastat
. When the outdoor temperature falls below the balance point, an air-to-air heat pump
_____. - answer. requires supplemental heat
Which of these components is unique to the heat pump? - answerDefrost timer
