1/17/2012 August 2010 1 MOBILE HOME TRAINING Mobile Home Heating Systems 1 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 Learning Objectives By attending this session, participants will become aware of: MOBILE HOME HEATING SYSTEMS aware of: • Mobile home heating system characteristics • Mobile home heating system components • Furnace testing protocols • Furnace testing equipment 2 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov • Improvements through cleaning and tuning • Furnace replacement criteria
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MOBILE HOME TRAINING Mobile Home Heating Systems · Flue MOBILE HOME HEATING SYSTEMS • Specifically designed for use in mobile homes
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1/17/2012
August 2010 1
MOBILE HOME TRAINING
Mobile Home Heating Systems
1 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.govWEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010
Learning Objectives
By attending this session, participants will become aware of:
MOBILE HOME HEATING SYSTEMS
aware of:
• Mobile home heating system characteristics
• Mobile home heating system components
• Furnace testing protocols
• Furnace testing equipment
2 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
g q p
• Improvements through cleaning and tuning
• Furnace replacement criteria
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August 2010 2
Heating System Characteristics #1
FlueFlue
MOBILE HOME HEATING SYSTEMS
• Specifically designed for use in mobile homes
• Usually located in a closet
• Sealed combustion with dedicated combustion air inlets
• Short metal chimney design
• Compact interchangeable burners
• “Down-Flow” air distribution t
Heat ExchangerHeat Exchanger
BlowerBlower
Combustion AirCombustion Air
3 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
system
• Ducts located in the belly cavity
• May mix outside air with conditioned air
Combustion AirCombustion Air
BurnerBurner
Photo courtesy of WV GOEO
Heating System Characteristics #2MOBILE HOME HEATING SYSTEMS
Furnace Main DuctRegisters
Return Air
4 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
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August 2010 3
Combustion Air Intake
Exhaust
Heating System Characteristics #3MOBILE HOME HEATING SYSTEMS
Supply Air Fan
Return Air Intake
G Oil B
5 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
Gas or Oil Burner
Supply Air Duct
Heating System Characteristics #4
Flue Vent Pipe for Exhaust Air and Gases (Hot)
Entry Pipe for Combustion Air (Cool)
MOBILE HOME HEATING SYSTEMS
Return Air Intake
Blower
Heat Exchanger
Combustion Chamber
6 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
Chamber
Air Conditioner Coil CabinetTo Heating Ducts
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August 2010 4
Chimney TerminationsMOBILE HOME HEATING SYSTEMS
7 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
Photos courtesy of the US Department of Energy
Gas or Propane Oil
Oil HeatMOBILE HOME HEATING SYSTEMS
8 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
Photos courtesy of PA WTC
Oil Burner and Combustion Air Inlet
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August 2010 5
Make-Up AirMOBILE HOME HEATING SYSTEMS
Fresh Air InletFresh Air InletFresh Air InletFresh Air Inlet
9 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
Photos courtesy of PA WTC
Furnace Testing Protocol
Furnaces must be tested to assess:• Safety (fuel leaks clearances etc )
MOBILE HOME HEATING SYSTEMS
• Safety (fuel leaks, clearances, etc.)
• Flue gas temperatures
• Oxygen (O2) or Carbon Dioxide (CO2)
• Carbon Monoxide (CO) levels
• Draft
Test HoleTest Hole
• Condition of the heat exchange
10 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov
r
• Temperature rise
• Operating fan temperaturesSingle wall flue for oil heat
Photo courtesy of PA WTC
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August 2010 6
Testing Equipment - CriteriaMOBILE HOME HEATING SYSTEMS
Combustion analyzers should be able to read and calculate for:
• Flue gas oxygen content
• Flue gas temperature
• Ambient temperature
• Flue gas carbon monoxide
• Combustion efficiency
11 | WEATHERIZATION ASSISTANCE PROGRAM STANDARDIZED CURRICULUM – August 2010 eere.energy.gov