Part # GCTRM Rev 3 (12/10/09)
Page 67
Flame Velocity:
The speed at which a flame travels through a
fuel-air-mixture. Burning speeds vary with types of gases,
and the amount of air mixed with the gas. This air to gas
ratio is very important in that it is directly related to flame
stability
Flashback:
An undesirable flame characteristic in which
burner flames strike back into a burner to burn there or
to create a pop after the gas supply has been turned off.
Flashback occurs when
gas-air flow velocity is less than burning speed at some
point near a burner port. Flashback is a condition
where gas ignites within the burner. Any factor, which
increases burning speed, tends to promote flashback,
and any factor decreasing flow velocity from the ports
will contribute to flashback. Flashback is more prevalent
with faster burning gases. Natural gas is a relatively slow
burning gas hence flashback is less likely. Reducing
primary air is the usual cure for flashback.
Flashback Arrestor:
A gauze, grid or any other portion of a
burner assembly used to avert flashback.
Flashtube:
An ignition device, commonly used for igniting
gas on range top burners. An air-gas mixture from the
burner body is injected into the end of a short tube. The
mixture moves along the tube, is ignited by a standing
pilot flame at the other open end of the tube and the
flame travels back through the mixture in the flashtube to
ignite the gas at the burner ports.
Floating Flames:
An undesirable burner operating condition,
usually indicating incomplete combustion in which
flames leave the burner ports to “reach” for combustion
air.
Flue Gases, Flue Products:
The combination of combustion
products and excess air leaving the combustion area.
Since water is produced as a vapor in the burning of
the gas, it is also present in the flue products. If the flue
products and vent system remain hot enough, this
vapor is harmlessly discharged. If not, the vapor can
reach the dew point and condense into water, which can
accumulate in the system.
Flue Loss:
The heat lost in flue products exiting from the flue
outlet of an appliance.
Flue Outlet:
The opening provided in am appliance for the
escape of flue gases.
I
gnition Temperature:
Temperature at which an air-gas
mixture will initiate and support combustion
Inches of Mercury Column:
A unit used in measuring
pressures. One inch of mercury column equals a pressure
of 0.491 pounds per square inch.
Inches of Water Column:
A unit used in measuring pressures.
One inch of water column equals a pressure of 0.578
ounces per square inch. One inch mercury column equals
about 13.6 inches water column.
Incomplete Combustion:
Combustion in which the fuel is
only partially burned. A poorly vented appliance restricts
flow of air into an appliance. Lack of ventilation around an
appliance may lower oxygen content in the surrounding
air. This can be a result of spillage of combustion products
into the room as well. These conditions can cause
incomplete combustion and poor performance of an
appliance. Adequate, but not excessive ventilation is a
must and cannot be over emphasized.
Inerts:
Non-combustible substances in a fuel, or in flue
gasses, such as nitrogen or carbon dioxide.
Infrared Burner (Radiant Burner):
A burner, which is
designed to operate with a hot, glowing surface. A
substantial amount of its energy output is in the form of
infrared radiant energy.
Injection:
Drawing primary air into a gas burner by means of
a flow of fuel gas.
Input Rate:
The quantity of heat or fuel supplied to an
appliance, expressed in volume or heat units per unit
time, such as cubic feet per hour or BTU per hour.
Input Rating:
The gas burning capacity of an appliance in
BTU per hour as specified by the manufacturer. Appliance
input ratings are based on sea level operation and need
not be changed for operation up to 2 000 feet elevation.
For operation at elevations above 2 000 feet, input ratings
should be reduced at the rate of 4 percent for each 1 000
feet above sea level.
Lean Mixture:
An air-gas mixture, which contains more air
that the amount needed for complete combustion of the
gas.
Lifting Flames:
An unstable burner flame condition in
which flames lift or blow off the burner port(s). Excessive
primary air can cause flames to lift and blow off the
burner ports, which can be noisy as well as inefficient.
More importantly, however, is the production of
dangerous carbon monoxide under this condition. Any
factor, which reduces burning speed, promotes lifting
flames. Also, any factor, which increases flow velocity
from ports, contributes to lifting flames. Over-firing of
burners is also a cause. The normal cure for lifting flames
is the reduction of primary air input to the burner.
Liquefied Petroleum Gases:
The terms “Liquefied Petroleum
Gases”, “LPG” and “LP Gas” mean and include any fuel gas
which is composed predominantly of any of the following
hydrocarbons, or mixtures of them: propane, propylene,
normal butane or isobutane and butylenes.
Содержание G Series
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Страница 21: ...Part GCTRM Rev 3 12 10 09 Page 21 Section 3 Certification Markings...
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Страница 25: ...Part GCTRM Rev 3 12 10 09 Page 25 Section 4 Properties And Characteristics of Fuel Gases...
Страница 27: ...Part GCTRM Rev 3 12 10 09 Page 27 Section 5 Operation Of Controls...
Страница 31: ...Part GCTRM Rev 3 12 10 09 Page 31 Section 6 Gas Valves And Adjustments...
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Страница 37: ...Part GCTRM Rev 3 12 10 09 Page 37 Section 7 Adjustments Removal Replacement And Calibration Of Controls...
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Страница 49: ...Part GCTRM Rev 3 12 10 09 Page 49 Section 8 Gas Pressure Regulators...
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Страница 53: ...Part GCTRM Rev 3 12 10 09 Page 53 Section 9 Thermocouples And How They Work...
Страница 55: ...Part GCTRM Rev 3 12 10 09 Page 55 Section 10 Trouble Shooting The Oven Pilot Safety System...
Страница 59: ...Part GCTRM Rev 3 12 10 09 Page 59 Section 11 Gas Equipment Field Service Trouble Shooting Guide...
Страница 61: ...Part GCTRM Rev 3 12 10 09 Page 61 Section 12 Maintenance Care Instructions For Ranges And Oven Surfaces...
Страница 65: ...Part GCTRM Rev 3 12 10 09 Page 65 Section 13 Gas Technician s Glossary...
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Страница 71: ...Part GCTRM Rev 3 12 10 09 Page 71 Section 14 Range Wiring Diagrams...
Страница 75: ...Part GCTRM Rev 3 12 10 09 Page 75 3056100 US Range C836C Cuisine Series...
Страница 76: ...Part GCTRM Rev 3 12 10 09 Page 76 229064 US Range 836C Cuisine Series...
Страница 77: ...Part GCTRM Rev 3 12 10 09 Page 77 2706601 US Range Px S Series Left Single RC Oven...
Страница 78: ...Part GCTRM Rev 3 12 10 09 Page 78 2706602 US Range Px S Series Right Single RC Oven...
Страница 79: ...Part GCTRM Rev 3 12 10 09 Page 79 2706603 US Range Px S Series 2 RC Ovens...
Страница 80: ...Part GCTRM Rev 3 12 10 09 Page 80 4514771 US Range Px SX Series Left Single RC Oven...
Страница 81: ...Part GCTRM Rev 3 12 10 09 Page 81 4514772 US Range Px SX Series Right Single RC Oven...
Страница 82: ...Part GCTRM Rev 3 12 10 09 Page 82 4514774 US Range Px SX SeriesTwo RC Ovens...
Страница 83: ...Part GCTRM Rev 3 12 10 09 Page 83 2529700 ME MSTE 40RC Electric Spark...
Страница 84: ...Part GCTRM Rev 3 12 10 09 Page 84 2529701 M MS 40RC...
Страница 85: ...Part GCTRM Rev 3 12 10 09 Page 85 2529600 M MS 40 Electric Spark...
Страница 86: ...Part GCTRM Rev 3 12 10 09 Page 86 2444200 Sentry Electric Spark...
Страница 87: ...Part GCTRM Rev 3 12 10 09 Page 87 2444300 STE286RC STE284RC Left ST283RCE...
Страница 94: ...Part GCTRM Rev 3 12 10 09 Page 94 30129 Sheet 2 of 3 Master Series Broiler Range interconnection kit...
Страница 95: ...Part GCTRM Rev 3 12 10 09 Page 95 30129 Sheet 3 of 3 Restaurant Series Broiler Range interconnection kit...
Страница 97: ...Part GCTRM Rev 3 12 10 09 Page 97 Section 15 Service Bulletins...
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