8 terms

Combustion Air

air
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one cubic foot of natural gas requires ______ cubic foot of air for efficient combustion of barometric draft furnaces
45
one cubic foot of natural gas requires ______ cubic foot of air for efficient combustion of mid and high efficient furnaces
30
primary air is air mixed with gas
before ignition
secondary air is air mixed with gas
after ignition
the air for combustion that can be adjusted on a barometric draft furnace is
primary air
the barometric draft furnace requires _______ air to support combustion
primary, secondary, dilution
the mid and high efficient furnaces require ________ air to support combustion
primary, secondary
dilution air is air mixed with gas
after ignition
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