Testo HVAC Distributor Training:
The Importance of
Combustion Testing
Agenda
• Why Test?
• What to Test?
• Why Testo?
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Why Test?
• Safety / Liability
• Efficiency
• Appliance Operation / Longevity
• Revenue / Cost Savings / Professionalism
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Why Combustion Test: Safety
• Carbon Monoxide (CO) can be lethal
• Over 500 deaths / year; 15,000 ER visits/ year
• CO originates from incomplete combustion
• Reasons for the formation:
• Fuel rich mixture
• Improper venting
• Cooling of the flame temperture
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Carbon Monoxide Facts
• Odorless
• Colorless
• Tasteless
• Mixes well in air
• Poisonous
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Why Test: Efficiency
• Combustion Efficiency = Fuel Savings
1% increase in efficiency nets 1% fuel savings
• Ensures the equipment is operating at optimal efficiency
Saves on both fuel and electricity usage
• Customer expects the system to operate at stated
efficiency
There is a difference between combustion efficiency and AFUE
• Customer receives what they expect
Performance Verification
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Why Test: Operation and Longevity
• Heat Exchangers
Cracked HX investigation via O2
- Monitor for changes in O2 when blower starts and stops
- Monitor O2 during ventilation air test as outlined in the Intl. Fuel Gas Code,
Appendix D
Nether should affect furnace operation or the O2 reading!
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Why Test: Revenue, Cost Reduction, & Professionalism
• CO and Efficiency Tests can be billable services
• Reduce Call Backs from improper installs or troubleshooting
• Prevent unnecessary warranty disputes
• Professionalism of having the right tools for the job
• Professionalism of being a solutions provider
You are providing safety, comfort, and savings
Without measurements you’re just guessing!
• Differentiate the company and yourself
Offer something your competition doesn’t offer or
Offer it in a superior format
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What to test…
• Oxygen (%O2): primarily determines complete combustion
• Carbon Dioxide (%CO2): the maximized value relative to efficiency and
“ideal combustion”, but does not necessarily indicate complete
combustion.
• Carbon Monoxide (CO): lethal gas formed from incomplete combustion
• Excess Air: Needed to show complete combustion, but high values
indicate high heat stack loss – poor efficiency.
• Efficiency: represents the total amount of heat available from the fuel
minus the losses from the gasses going up the stack
• Temperature (ambient and stack): Needed to determine efficiency
• Draft pressure: Confirms the proper venting of combustibles out of the
flue, an appliance has 5 minutes to prove draft under ANSI standards
• Pressure: Confirmation or setting of gas pressures
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Combustion Diagram – Stoichiometric Chart
Incomplete
Complete
Ideal operating range of
burners
CO
Stoichiometric line
Eff.
Flue gas components
The ideal
operating
range is a
setting with
excess air.
CO2
O2
smoke
Excess Fuel
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Excess Air
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Why Testo…
• Largest manufacturer of Combustion Analyzers
• 50+ years of portable instrumentation development &
manufacturing experience
• 100+ R&D Engineers
• German/USA product development
• Innovative new products
• ISO 17025 Quality Standards
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Why Choose a Testo Combustion Analyzer?
• Get the job done right
Testo Analyzers deliver accuracy from the first measurement to the last
Self- check and on-board diagnostics
Built-in NOX filters standard on our CO sensors
Eliminates cross sensitivity errors that yield false high CO readings
• More features for more jobs
Full featured analyzers provide all the measurements you need for commissioning and
trouble-shooting
30 second start-up
Fast response from high velocity hoses
Pre-calibrated, field replaceable sensors
• Built to last
• Expertise second to none
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The Testo Family of Combustion Analyzers
testo 310:
Fully featured
Residential Analyzer
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testo 320:
Heavy Duty,
Hi Definition Analyzer
testo 330 LL:
Extra long life sensors
NOX upgradeable
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testo 310: Fully Featured Residential Analyzer
• O2, CO, Temp (amb & stack), Draft & Pressure
• Efficiency, CO2, Ex Air, CO (amb & air free)
• No Leak, Kink-free hose
• 10 hour lithium battery
• Backlit display
• Wireless printing
• $695: $920 w/printer
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Testo 320 Heavy-duty, Hi-definition Combustion Analyzer
• 8 line, color graphic display
• Ultra-rugged housing
• 500 reading memory with customer site info
• Sensor diagnostics & monitoring
• Self-service sensor kits
• Wireless printing
• Cam-lock, single line probe connection
• Starting at $1,195
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Testo 330 Long Life Combustion Analyzer
• NOX upgradeable
• Sensor over-range protection
• 4-year sensor warranty
• 500k readings memory
• Industrial version to 8,000ppm CO
• Intuitive graphic display
• Additional probes choices
• Starting at $2,495 w/printer
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Testo’s 2014 Fall Promotion
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Testo does a lot more than combustion!
• Airflow
Vane, Hot-wire, & Pitot tube Anemometers
• Humidity/ Moisture / IAQ
Meter, Loggers, Multi-function, and Transmitters
• Pressure
Digital manometers and transmitters
• Refrigeration
Digital Manifolds, Vacuum Gauges, and Leak Detectors
• RPM, Light, & Sound
• Temperature
Thermal Cameras, IR, Type K, NTC, and RTD
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Thank You,
for your time and efforts to
promote Testo products