Overhead Slide Master

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NATURAL GAS COMBUSTION
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CAST-IRON BOILER HEAT FLOW
Up chimney
Up chimney
Into mechanical room
Useful heat
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CONDENSING BOILER HEAT FLOW
Fuel input 100
Latent Heat 10.2
Latent Heat Heat Loss lt 2
Sensible heat 89.8
Flue gas loss lt 1
Reduced to
Reduced to
Boiler stand-by and jacket loss lt 1
Seasonal efficiency of conventional
Boilers 80
Reduced to
Seasonal efficiency condensing boilers 96
Useful Heat gt 96
Increased to
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MORE USABLE HEAT THROUGH CONDENSATION
What influences the rate of condensation?
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SIMPLIFIED CONDENSING BOILER OPERATION
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TYPICAL HYDRONIC WATER TEMPERATURE REQUIREMENTS

• High temperature
• Finned tube baseboard 140 - 190 oF
• Air heat fancoils 140 - 180 oF
• Pool/spa heat exchangers 160 - 180 oF
• DHW production 150 - 190 oF

• Medium temperature
• Cast iron radiators 100 - 140 oF
• Low mass radiant floor
• ie wood joist floors 100 -150 oF

• Low temperature
• High mass radiant floor
• ie concrete floors 80 - 120 oF
• Snowmelting systems 80 - 120 oF

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HYDRONIC WATER TEMPERATURES
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Company profile
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COMPANY PROFILE

• 3rd generation, family owned company, founded in
  1917
• 12 production facilities in Germany, Poland,
  France, Canada and China
• Over 8500 employees

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CUSTOMER CONTACT119 Sales Centers in 38 countries
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VIESSMANN - NORTH AMERICA

• 1980 Canadian operations started in Waterloo,
  ON
• 1990 - USA operations started in Warwick, RI
• 2001 - West coast sales office in Langley, BC

North American Headquarters Waterloo, ON
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VIESSMANN - NORTH AMERICA

• USA head office in Warwick, RI
• New building opened in May 2003
• Provides warehousing, logistics, training
  seminars and technical support for USA

North American Headquarters Waterloo, ON
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VIESSMANN ACADEMY TRAINING

• Training seminar facilities in
• Waterloo, ON
• Warwick, RI
• Langley, BC

Attended annually by over 2000 people
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