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Viessmann Parts 7820297 Combustion Chamber Stainless Steel VR1-33
Item#:
7820297
Manufacturer Item:
7820297
Manufacturer:
VIESSMANN MANUFACTURING INC.
Armstrong Air Heating Parts 35K71 Wet Pack Combustion Chamber 14",
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Item#:
35K71
Manufacturer Item:
35K71
Manufacturer:
ALLIED AIR ENTERPRISES
Armstrong Air Heating Parts 35K70 Wet Pack Combustion Chamber 15-1/2",
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Item#:
35K70
Manufacturer Item:
35K70
Manufacturer:
ALLIED AIR ENTERPRISES
Weil-McLain 383500085 Burner Replacement Kit Ultra 155
Item#:
383500085
Manufacturer Item:
383-500-085
Manufacturer:
WEIL-MCLAIN
Thermo Products Parts 380798 Combustion Chamber
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Item#:
380798
Manufacturer Item:
380798
Manufacturer:
THERMO PRODUCTS, LLC
Weil-McLain Heating Parts 383500407 Burner Replacement Kit
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Item#:
383500407
Manufacturer Item:
383-500-407
Manufacturer:
WEIL-MCLAIN
Williamsom-Thermoflo 386-700-836WT Combustion Chamber Kit OWB & OWT Williamson Thermo-Flo,
Item#:
386-700-836WT
Manufacturer Item:
386700836
Manufacturer:
WILLIAMSON -THERMOFLO
Carlin Parts 51805 Air Tube Assembly 5",
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Boyertown Parts 711301K Ceramic Combustion Chamber Kit for Hallmark HBD85, HBD115 Oil Fired Furnace, 85000 - 115000 BTU
Item#:
711301
Manufacturer Item:
711301K
Manufacturer:
HALLMARK
Boyertown Parts 711311K Combustion Chamber Kit for Hallmark HBD160, LBD160 Oil Fired Furnace
Item#:
711311
Manufacturer Item:
711311K
Manufacturer:
HALLMARK
Flow Rate
Atomizing nozzles are available in a wide range of flow rates, all
but eliminating the need for specially calibrated nozzles. Between
1.00 GPH and 2.00 GPH, for example, seven different flow rates
are available. Generally, with hot water and warm air heat, the
smallest firing rate that will adequately heat the house on the
coldest day is the proper size to use and the most economical.
Short on-cycles result in low efficiency. Another guideline is to
select the flow rate that provides a reasonable stack temperature
regardless of the connected load. (According to the New England
Fuel Institute, aim for a stack temperature of 400°F or lower on
matched packaged units or 500°F or lower on conversion burners.)
If the boiler or furnace is undersized for the load, it may be
necessary to fire for the load and ignore the efficiency
Spray Angle
Spray angles are available from 30° through 90° in most nozzle
sizes to meet the requirements of a wide variety of burner air
patterns and combustion chambers.
Usually it is desirable to fit the spray angle to the air pattern of the
burner. In todays flame retention burner, it is possible to fire more
than one spray angle with good results. Generally, round or square
combustion chambers should be fired with 70° to 90° nozzles.
Long, narrow chambers usually require 30° to 60° spray angles.
Burner Air Patterns
Burner air patterns are much like nozzle spray patterns in that
they fall into the same general classifications, either hollow or
solid. As you would expect, a burner with a hollow air pattern
generally requires a hollow cone fuel nozzle. A burner with a solid
air pattern will give highest efficiency with a solid cone nozzle,
but the flame will probably be longer.
Spray Angle
Item#:
7747028944
Manufacturer Item:
7-747-028-944
Manufacturer:
BOSCH THERMOTECHNOLOGY CORP
Carlin Parts 78089 Air Tube Assembly EZ1 7",
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