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1.1.1 The Power Flame Model UCM Burner is a forced draft, high swirl, partial premix/nozzle mix gas burner
which incorporates flue gas recirculation on both gas and oil to achieve ultra low NOx reduction. The
combustion air is furnished by an integrally mounted combustion air fan. The Power Flame packaged
combustion system can be operated under positive or negative furnace pressures with clean, efficient
combustion in a wide range of combustion chamber conditions.
1.1.2 Power Flame Model UCM burner’s high swirl design enables greater flame turbulence at a reduced flame
size. As a result, these burners require less combustion chamber volume for complete combustion and
can be easily fired under positive furnace pressure conditions.
1.1.3 The Power Flame Model UCM burner is a totally packaged and factory tested combustion system offering
single unit responsibility. The package incorporates accurate control of the fuel-air ratio throughout the
firing range with the resultant controlled flame patterns and clean combustion for maximum efficiency.
1.1.4 Combustion air flow is controlled by a multi-louvered damper assembly. Combustion air is supplied by an
integral motor-driven blower, which discharges into the burner blast tube assembly.
1.1.5 The air-fuel ratio is established at the time of start-up and proven with combustion test equipment to
provide the lowest practical oxygen and lowest NOx with a clean flame.
1.1.6 A Flame Safeguard Controller programs the firing cycle. The operating cycle is sequenced to ensure
normal and safe conditions before fuel can be introduced into the combustion chamber area. The
complete firing cycle is supervised to ensure that ignition of main flame is properly established and
maintained. Flame monitoring is provided by either a lead sulfide or ultraviolet type optical scanner.
1.1.7 The limit circuit includes the operating limit control to maintain set operating pressure or temperature, as
well as a high limit control to guard against excessive pressure or temperature. Low water and other
similar safety controls can be interlocked into the burner control system to satisfy specific job and/or code
requirements.
1.1.8 The control circuit is normally 120 volts. A control circuit transformer may be furnished to provide the 120
volts control circuit for polyphase motor voltage applications.
1.1.9 Power Flame Model UCM burners are capable of firing single or multi-fuel applications. A manual change-
over of the particular fuel’s gun assembly is required.
1.1.10 The pre-wired Control Panel is mounted and wired as an integral part of the burner in accordance with
recommendations of Underwriters Laboratories, Inc. and The National Electrical Code. Components are
wired to numbered terminal strips. Panel and burners are factory fire tested before shipment.
Comprehensive wiring and gas and/or oil piping diagrams are furnished with each burner in accordance
with individual job or application requirements. Wall mounted or free standing control panels are also
available.
1.1.11 Power Flame Model UCM burners are available with control systems to comply with the requirements of
Factory Mutual, Industrial Risk Insurers and any special state, municipal, local and utility company codes,
including New York City Department of Buildings (MEA), NYC Department of Environmental Protection,
Commonwealth of Massachusetts, State of Connecticut Fire Marshall, Illinois School Code and others.
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1.2.1 Power Flame Model UCM burners are usually shipped as a unit with an integrally mounted, pre-wired
control panel. A remote fuel oil pump-set is shipped separately on the oil and combination oil/gas units.
Summary of Contents for UCM-1000
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