PRODUCTS
PP BURNER
THERMAL CAPACITIES
PP BURNER
DIMENSIONS
ALL DIMENSIONS SHOULD BE CONFIRMED BY COMTHERM OFFICE.
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THE PP BURNER
The 'PP' series of gas burners are pre-packaged fan assisted units designed to suit virtually all types of low temperature gas fired
application; typical applications include the firing of box ovens, industrial dryers and air heaters.
The PP burners utilise the well proven Comtherm PH burner head and combustion system.
The burner system produces a wide flame spread and therefore relatively short flame; this feature makes the
burner ideal for applications were chamber length is restricted.
The 'PP' burners have been designed with ease of maintenance and installation a top priority, all parts of the burner
including the gas manifold and combustion head can be removed without unbolting the burner off the mounting flange.
For ease of maintenance and service the spark plug and flame sensor are externally mounted.
A heat resistant peepsight is fitted in the casing of all burners allowing visual inspection of the flame during operation.
The nozzle mix design of the burner and the progressive air mixing feature of the combustion head ensure that burners
can operate with high turn down capability; turndown ratios up to 40:1 are possible depending on burner applications and selection.
COMPLETE PREPACKAGED BURNERS
Each burner unit is supplied with a packaged and prepiped valve assembly, including the safety valves and
controls necessary to form a fully pre-packaged combustion module.
All burners have an integral combustion air fan, air pressure switch, ignition spark plug and flame sensor;
all the electrical components on the burner are prewired to a terminal enclosure mounted on the burner assembly.
The electrical terminal enclosure would normally be fitted with burner run and flame failure indication lights.
Burners are normally supplied complete with a gas valve assembly consisting of pilot/start valve assembly,
safety shut off valves, pressure switches and governors; the exact type of valve assembly will depend on the
application and the country of installation.
Burners are normally fitted with complete prewired automatic ignition and flame safety equipment.
Most types of flame failure and automatic ignition control units can be supplied; utilising either flame
rectification or ultra-violet flame sensing equipment.
Burners can be supplied with extra large control consoles containing special control gear and switchgear
to suit the requirements of any specific application; burners can be supplied with special valve arrangements;
standard burners are supplied with right handed assemblies unless otherwise specified.
Fully prebuilt burner packages are fully tested and the operation of all components checked before despatch from the factory.
As well as the standard range of PP burners, the burners can be supplied with special side firing combustion tubes
and for continuous running burner fan applications.
Special versions of PP burners can be supplied with a split manifold system - effectively producing two flame zones on the
burner head and making possible turn down performances of up to 80:1.
THREE HEAT INPUT RATES
The PP burner is manufactured in three basic gas manifold and air plate designs making possible a burner
range with heat input concentrations of 60kW, 290kW and 580kW per 300mm length of burner gas manifold.
The flame length produced by the PP burner is obviously shorter than that produced by conventional burners
and does depend on burner setting, combustion chamber conditions and application.
Nominal flame lengths that can be achieved for heat inputs of 60kW, 290kW and 580kW per 300mm length of
burner gas manifold are 300mm, 700mm and 1000mm respectively.
TYPES OF CONTROL AVAILABLE
Size PP01 to PP21 burners are available as on-off, high-low, or modulation(gas only) models.
Sizes PP22 to PP46 are available as high-low or full modulation (gas only) models.
Sizes PP22 to PP46 are also available as full modulation (gas and air)(E type economy models).
For further information regarding our range of products and services please contact us.
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GAS SUPPLY
Series PP burners can be supplied for operation on natural or LP gases and are available in eighteen basic sizes,
ranging from nominal thermal capacities of 30KW to 1760KW.
All valve assemblies on the burners are sized to suit an inlet gas pressure of 17.5 mbar (natural gas) or 30mbar (LP gases).
Burners can be supplied to suit other gas types and supply pressures.
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ELECTRICAL SUPPLY
PP01 & PP02 burners are supplied for single phase electrical supply only.
PP11 to PP22 burners are available fitted with single phase or three phase fan motors.
PP24 to PP46 burners are only supplied fitted with three phase T.E.F.C. motors.
Burners can be supplied to suit almost all types of electrical power supply; including 220/380/440v three phase (50 or 60Hz)
power supply and with 110/120v or 220/240v control circuits.
Burners to suit other electrical supply voltages can be supplied specially to suit a specific application requirement.
WHEN ORDERING PP GAS
BURNERS PLEASE SPECIFY THE FOLLOWING INFORMATION:-
- Type of gas
- Gas supply pressure
(to inlet of valve assembly)
- Combustion chamber/ duct pressure.
- Electric supply data :
- Burner motor voltage
( 1 or 3 phase)
- Control circuit voltage ( 1 phase)
- Type of temperature control required. i.e. 0n-off high/low, modulation etc.
- Type of control signal to be used.
- Valve and burner specification required.
- Country of installation
- Details of application.
- Delivery date required.
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