ESCO
Study
/
set-
/
gas
/
furnaces exam questions with correct answers
/ / / / / /
Burning
/one
/cubic
/foot
/of
/natural /gas /will /produce /approximately /_____ /BTU's /- /correct /answer(s) /✔✔ /900- /1,100 /BTU
The
/National
/Fuel
/Gas
/Code
/classifies /a /vent /system /for /a /condensing /furnace /as; /- /correct /answer(s) /✔✔ /Category /IV
what
/type
/of
/draft
/is
/used
/to /move /flue /gas /through /the /heat /exchanger /and /into /the /venting /system /in /modern /gas-
fired /furnaces? /- /correct /answer(s) /✔✔ /Mechanical
,A
/customer
/complains
/that /
a/
2
/year-
/old,
/direct,
/hot
/surface
/ignition
/furnace
/will
/not /light. /The /inducer /motor /runs, /the /pressure /switch /closes, /and /the /igniter /begins /to /glow,
/but
/there
/is
/no
/ignition.
/The
/furnace
/locks
/out
/while
/attempting
/to
/light.
/After
/resetting
/the
/furnace,
/17
/VAC
/is
/measured
/at
/the
,/gas
/valve
/and /the /technician /correctly /concludes; /- /correct /answer(s) /✔✔ /The /gas /valve /is /shorted
The /efficiency /rating /of /a /gas-
burning
/appliance
/is /determined /using; /- /correct /answer(s) /✔✔ /(AFUE) /Annual /Fuel /Utilization /Efficiency
When
/the
/burners
/of /
a
/furnace /are /ignited, /the /blower /motor /operation /is /delayed /to; /- /correct /answer(s) /✔✔ /Allow
/the /heat /exchanger /to /warm /up
Typical
/CONDENSING /FURNACES /have /an /efficiency /rating /of /at /least /- /correct /answer(s) /✔✔ /90%
A /gas /furnace /has /an /integrated /furnace /control /(IFC). /How /is /the /fan /cycled /during /heating? /-
/correct /answer(s) /✔✔ /Heat /relay
What
/reading
/should /a /good /thermocouple /produce /on /a /DC /meter /- /correct /answer(s) /✔✔ /30 /millivolts
A
/furnace
/nameplate
/specifies /
a
, /temperature
/rise
/of
/40
/to
/70
/degrees.
/Temperature
/measurements
/indicates /
a
/rise
/of /80 /degrees. /The /most /appropriate /action /is /to; /- /correct /answer(s) /✔✔ /Increase /fan /speed
The /most /common /burner /used /in /an /induced /draft /furnace /is; /- /correct /answer(s) /✔✔ /inshot
You
/are
/installing
/1/2"
/and
/3/4"
/black
/iron
/pipe
/to /
a
/natural
/gas
/furnace.
/When
/threading, /what /is /the /approximate /number /of /threads /to /cut? /- /correct /answer(s) /✔✔ /7-10
When
/exposed
Study
/
set-
/
gas
/
furnaces exam questions with correct answers
/ / / / / /
Burning
/one
/cubic
/foot
/of
/natural /gas /will /produce /approximately /_____ /BTU's /- /correct /answer(s) /✔✔ /900- /1,100 /BTU
The
/National
/Fuel
/Gas
/Code
/classifies /a /vent /system /for /a /condensing /furnace /as; /- /correct /answer(s) /✔✔ /Category /IV
what
/type
/of
/draft
/is
/used
/to /move /flue /gas /through /the /heat /exchanger /and /into /the /venting /system /in /modern /gas-
fired /furnaces? /- /correct /answer(s) /✔✔ /Mechanical
,A
/customer
/complains
/that /
a/
2
/year-
/old,
/direct,
/hot
/surface
/ignition
/furnace
/will
/not /light. /The /inducer /motor /runs, /the /pressure /switch /closes, /and /the /igniter /begins /to /glow,
/but
/there
/is
/no
/ignition.
/The
/furnace
/locks
/out
/while
/attempting
/to
/light.
/After
/resetting
/the
/furnace,
/17
/VAC
/is
/measured
/at
/the
,/gas
/valve
/and /the /technician /correctly /concludes; /- /correct /answer(s) /✔✔ /The /gas /valve /is /shorted
The /efficiency /rating /of /a /gas-
burning
/appliance
/is /determined /using; /- /correct /answer(s) /✔✔ /(AFUE) /Annual /Fuel /Utilization /Efficiency
When
/the
/burners
/of /
a
/furnace /are /ignited, /the /blower /motor /operation /is /delayed /to; /- /correct /answer(s) /✔✔ /Allow
/the /heat /exchanger /to /warm /up
Typical
/CONDENSING /FURNACES /have /an /efficiency /rating /of /at /least /- /correct /answer(s) /✔✔ /90%
A /gas /furnace /has /an /integrated /furnace /control /(IFC). /How /is /the /fan /cycled /during /heating? /-
/correct /answer(s) /✔✔ /Heat /relay
What
/reading
/should /a /good /thermocouple /produce /on /a /DC /meter /- /correct /answer(s) /✔✔ /30 /millivolts
A
/furnace
/nameplate
/specifies /
a
, /temperature
/rise
/of
/40
/to
/70
/degrees.
/Temperature
/measurements
/indicates /
a
/rise
/of /80 /degrees. /The /most /appropriate /action /is /to; /- /correct /answer(s) /✔✔ /Increase /fan /speed
The /most /common /burner /used /in /an /induced /draft /furnace /is; /- /correct /answer(s) /✔✔ /inshot
You
/are
/installing
/1/2"
/and
/3/4"
/black
/iron
/pipe
/to /
a
/natural
/gas
/furnace.
/When
/threading, /what /is /the /approximate /number /of /threads /to /cut? /- /correct /answer(s) /✔✔ /7-10
When
/exposed
