hvacr gas heating esco Exam (2025) UPDATE
Verified Questions And Answers | With 100%
Correct Answers graded A+ Guaranteed Success!!
Save
Practice questions for this set
Learn 1 /7 Study with Learn
the highest concentration of fuel that ignites is the
Choose an answer
1 LFL 2 LEL
3 LLL 4 UEL
Don't know?
Terms in this set (76)
, using an ohmmeter, there open
is 120 VAC between high
speed and ground wires,
this indicates
if temperature rise is too increase fan speed
high...
how many of the 3 OSHA all 3
conditions defining
confined spaces must be
met
what causes the fan motor failure
temperature limit safety
switch to shut off the
burner
the gas is flowing slower than the speed at which burn
flashback indicates
is occurring
what type of connector is vibration eliminators
used to control noise in
ductwork
if the main burner lights there is faulty blower housing
and after a minute the
blower fan comes on but
the burner flames waver in
one corner...
a burner orifice... meters gas to the burner
when lockout/tagout is there should be 1 key kept by the electrician
used
the gas pressure is usually 3.5
a spark igniter operates at 7,500 vac
a good thermocouple 30 millivolts
produces
Verified Questions And Answers | With 100%
Correct Answers graded A+ Guaranteed Success!!
Save
Practice questions for this set
Learn 1 /7 Study with Learn
the highest concentration of fuel that ignites is the
Choose an answer
1 LFL 2 LEL
3 LLL 4 UEL
Don't know?
Terms in this set (76)
, using an ohmmeter, there open
is 120 VAC between high
speed and ground wires,
this indicates
if temperature rise is too increase fan speed
high...
how many of the 3 OSHA all 3
conditions defining
confined spaces must be
met
what causes the fan motor failure
temperature limit safety
switch to shut off the
burner
the gas is flowing slower than the speed at which burn
flashback indicates
is occurring
what type of connector is vibration eliminators
used to control noise in
ductwork
if the main burner lights there is faulty blower housing
and after a minute the
blower fan comes on but
the burner flames waver in
one corner...
a burner orifice... meters gas to the burner
when lockout/tagout is there should be 1 key kept by the electrician
used
the gas pressure is usually 3.5
a spark igniter operates at 7,500 vac
a good thermocouple 30 millivolts
produces
