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HVACR Gas Heating ESCO Exam With A+ Guaranteed Solutions.
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HVACR Gas Heating ESCO Exam With A+ Guaranteed Solutions.
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HVACR GAS HEATING ESCOHVACR Gas Heating ESCO Exam With
A+ Guaranteed Solutions.
Using an ohmmeter, there is 120 VAC between high speed and ground wires, this indicates -
✔✔✔ - open
If temperature rise is too high... - ✔✔✔ - increase fan speed
How many of the 3 OSHA conditions defining confined spaces must be met - ✔✔✔ - all 3
What causes the temperature limit safety switch to shut off the burner - ✔✔✔ - fan motor
failure
Flashback indicates - ✔✔✔ - the gas is flowing slower than the speed at which burn is
occurring
What type of connector is used to control noise in ductwork - ✔✔✔ - vibration eliminators
If the main burner lights and after a minute the blower fan comes on but the burner flames
waver in one corner... - ✔✔✔ - there is faulty blower housing
A burner orifice... - ✔✔✔ - meters gas to the burner
When lockout/tagout is used - ✔✔✔ - there should be 1 key kept by the electrician
The gas pressure is usually - ✔✔✔ - 3.5
HVACR GAS HEATING ESCO Page 1
, HVACR GAS HEATING ESCO
A spark igniter operates at - ✔✔✔ - 7,500 vac
A good thermocouple produces - ✔✔✔ - 30 millivolts
What must be present for combustion - ✔✔✔ - air, fuel and ignition source
The innerds of a type b vent is made of - ✔✔✔ - aluminium
The outsides of a type b vent is made of - ✔✔✔ - galvanized steel
One cubic foot of liquified petroleum produces,,, - ✔✔✔ - 2000- 2500 btu
The highest concentration of fuel that ignites is the - ✔✔✔ - UEL
The first section of duct installed that connects to the furnace is the - ✔✔✔ - plenum
The top of a ladder should extend - ✔✔✔ - 3 feet
How much current goes thru the flame sensor? - ✔✔✔ - 1-10 microamps
To change cubic feet per minute delivered to a single speed belt driven blower, you should
adjust - ✔✔✔ - the motor pulley size
HVACR GAS HEATING ESCO Page 2
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