NATE/ICE Gas Furnace, Top Questions & Answers. 100% Accurate. Verified.
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NATE/ICE
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NATE/ICE
NATE/ICE Gas Furnace, Top Questions & Answers. 100% Accurate. Verified.
What type of furnace needs a combustible floor base? - -A downflow furnace
What is the combustible floor base made out of? - -Fiberglass
Closet installation require close attention to be paid to _____ transmission - ...
NATE/ICE Gas Furnace, Top Questions &
Answers. 100% Accurate. Verified.
What type of furnace needs a combustible floor base? - ✔✔-A downflow furnace
What is the combustible floor base made out of? - ✔✔-Fiberglass
Closet installation require close attention to be paid to _____ transmission - ✔✔-noise
On a call for heat the circuit board will look for? - ✔✔-Closed thermal switches:
* High limit control
* Flame roll-out
* Secondary limits
* Open pressure switch
The inducer will be energized for the _____ perious - ✔✔-pre-purge
The pressure switch will close proving the _____ operation - ✔✔-inducer
the gas valve will open for a trial period of _____ to _____ seconds - ✔✔-5 to 7
A flame failure during a call for heat will be detected within _____ seconds - ✔✔-0.8
products of combustion include - ✔✔-* Carbon dioxide
* Nitrogen
* Water vapor
* Heat
, too much primary air can cause the flame to _____ _____ the burner - ✔✔-lift off
Inshot burners should produce a hard, loud flame that is light _____ in color and has a little or no _____
tips - ✔✔-* Blue
* Yellow
Earlier burners were made of cast iron; today they are made of _____ - ✔✔-Sheet metal
Individual burners must be mounted in correct alignment to ensure adequate _____. - ✔✔-carry-over
yellow tips mean - ✔✔-incomplete combustion
_____ _____ ignition systems are on the entire time the burner is firing - ✔✔-intermittent duty
interrupted duty ignition systems are energized _____ the main burner is stable and then de-energized -
✔✔-until
how far should the thermocouple go into the flame? - ✔✔-5/8 to 1/2
if a system is undersized, it will result in? - ✔✔-long run time during the heating season and the lack of
temperature control
if a system is oversized, it will result in? - ✔✔-short cycling curing the heating season
the _____ is the most widely used measure of a furnace's heating efficiency. - ✔✔-AFUE
the AFUE refers only to the unit's _____ efficiency, not its electricity usage nor its system efficiency. -
✔✔-fuel
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