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Cards In This Set
| Front | Back |
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Large commercial buildings have what type of electrical service?
|
3 phase
|
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Natural gas ignites at what temperature?
|
1300'F
|
|
What are 2 basic functions of a pilot?
|
Excite thermocouple
ignite burners
|
|
What are 2 types of pilots?
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Aerated and non-aerated
|
|
The heating value of CH4 is?
|
1000 btu
|
|
The heating value of C3H8 is?
|
2520 btu
|
|
The operating pressure on a low pressure propane line is?
|
11" wc
|
|
The boiling point of propane liquid at atmospheric pressure is?
|
-44'F
|
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Heat transfer occurs in 3 ways.....
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Conduction, convection, radiation.
|
|
What is the unit of measure when testing flame rectification?
|
DC micro Amps
|
|
A drafthood provides what type of air?
|
Dilution air
|
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To ensure correct appliance firing rate or input what should you do?
|
Clock meter
|
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Name the 5 components of a combination gas valve.
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Manual shut-off
body
safety coil
regulator
operating coil
|
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What is the flame speed of Nautral Gas?
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12 inches/sec
|
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Name the components (6) of a venting system.
|
Vent cap, storm collar, roof flashing, round pipe tube, base support, fire-stop-spacer.
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