Course: HET 130 Heating Residential Appliances

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Unit 7 Outline »

Unit 7 Outline

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Unit 7 Outline

Gas Equipment Controls

1)     Purpose of Gas Heating Controls

a)     Cycle the system safely and automatically

2)     Sequence of Operations

a)     Call from the thermostat
b)     Draft fan
c)     Sensing of air through combustion system
d)     Proving of flame
e)     Heating continuation
f)      Cycle Off

3)     Burner Ignition

a)     Pilot system
b)     Spark/Pilot system
c)     Direct Spark
d)     Hot Surface Ignintion
Review the vocabulary terms listed below and look up their definitions / descriptions before taking the Vocabulary Quiz.

- Main Power
- Control Voltage
- Gas Valve
- Pilot
- Safety  Controls
- Relays
- Circuit Board
- Transformer