NCCER HVAC LEVEL 1 MODULE 4 INTRODUCTION TO HEATING QUESTIONS AND CORRECT {VERIFIED} ANSWERS NEWEST UPDATE|ALREADY GRADED A+

NCCER HVAC LEVEL 1 MODULE 4 INTRODUCTION TO HEATING
QUESTIONS AND CORRECT {VERIFIED} ANSWERS NEWEST
UPDATE|ALREADY GRADED A+.




Conduction - SOLUTION-A gas fired warm air furnace heats by _______


Conduction - SOLUTION-If you burn your finger by touching a hot surface, it is an
example of _______


Add moisture to the air - SOLUTION-Humidifiers are used to _______


26.5C - SOLUTION-A temperature of 80F is equal to _______


Combustion is incomplete - SOLUTION-Carbon monoxide is produced when ______


Blue with an orange tip - SOLUTION-A gas burner flame should be _______ Butane -
SOLUTION-Of the following gases, the one with the highest heating value per cubic
foot is _______

, Flows over the outside of the heat exchangers - SOLUTION-In a forced air furnace, air
_______


Is used to reheat the flue gases before they are vented - SOLUTION-In a condensing
furnace, the secondary heat exchanger _______


False - SOLUTION-The furnace blower should be operating while the air filter is being
replaced.


Only for the high efficiency condensing furnaces - SOLUTION-Direct venting of flue
gases with PVC pipe may be used ______


The gas pressure in the manifold - SOLUTION-A manometer may be used to measure
______


Cast iron - SOLUTION-Sectional boiler heat exchangers are usually constructed of
_______


Open if the temperature exceeds 160F - SOLUTION-The safety limit switch in an
electric furnace is usually set to _______