Thomas & Betts FE, BE warranty Burner Rack Removal contd

Page 24
Figure 27 - Individual Burners

32. Burner Rack Removal (cont'd)

Figure 25

Burner Orifices

Burner Assembly Support Brackets

Figure 26 -

Burner Rack

Completely

Removed

9. To remove the individual burners:

a.Remove the flash car- ryover (one screw per

burner).

b.With the burner rack upside down, remove the sheet metal screws (located at the rear) that retain the burner holddown.

c.Lift the rear of the burner upward slightly and pull back, remov- ing the individual burners.

d.To replace individual burners, reverse the above procedure.

10.To replace the burner rack assembly and the bottom panel, re- verse the above procedure (Steps 1-8).

Individual burners may be cleaned using air pressure. Use an air nozzle to blow out scale and dust accumulation from the burner ports. Alter- nately, blow through burner ports and venturi.

CAUTION: Eye protection is recommended.

Use a fine wire to dislodge any stubborn particles. Do not use anything that might change the port size.

When any service is completed, be careful to reassemble correctly to ensure that no unsafe conditions are created. When re-lighting, always follow the lighting instructions on the heater.

33. Pilot and Ignition System

The pilot can be serviced by opening the bottom access panel of the heater. Follow the first four steps of instructions for Burner Rack Re-

moval, Paragraph 32. The pilot can be removed to check the wiring, the spark gap, or to remove the orifice for cleaning. When the pilot is re-installed, be sure to include the pilot hole cover plate.

Pilot Hole

Cover

Plate

Figure 28 - Pilot Removal

Spark gap must be maintained to .100". (See Figure 29.)

Figure 29 -

Pilot Burner

Spark Gap

In the event the pilot

Figure 30 -

flame is short and/or

Pilot

yellow, check the pi-

Assembly

lot orifice for block-

 

age caused by lint or

 

dust accumulation.

 

Remove the pilot ori-

 

fice and clean with air

 

pressure. Check and

 

clean the aeration slot

 

in the pilot burner.

 

 

 

CAUTION: Due to high voltage on pilot spark wire and pilot electrode, do not touch when energized. See Hazard Levels, page 2.

The ignition controller of the intermittent electronic ignition pilot sys- tem is visibly located on the back of the heater. (See Figure 31.) Do not attempt to disassemble the ignition controller. There are no field re- placeable components in the control enclosure. However, each heating season the lead wires should be checked for insulation deterioration and good connections.

Proper operation of the electronic spark ignition system requires a minimum flame signal of .2 microamps as measured by a microampmeter.

For further information and check out procedure on the intermittent electronic ignition pilot system, refer to the manufacturer's control op- erating instructions supplied with the heater.

Form 436, Page 24

Page 23 Page 25
Image 24
Page 23 Page 25
Contents Gas-Fired, Power-Vented Table of ContentsModel FE and be Unit HeatersInstallation Codes WarrantySpecial Installations Aircraft Hangars/ Garages Fan-type unit heater is connected to a duct systemDimensions Fan-Type, Power-Vented Unit Heater Dimensions inchesDimensions mm Dimensions contd Blower-Type, Power-Vented Unit Heater Dimensions inchesUncrating and Preparation Unit Heater LocationClearances & Combustion Air Clearances and Combustion Air contd Suspending the HeaterSuspension 25-400 6152 18457 12305Optional, Field-Installed Hanger Kits Four-Point Swivel Connectors Option CK10 See aVenting Specific Venting Requirements read all beforeVenting contd Horizontal Vent Terminal Clearances StructureLocation all directions unless specified Manifold or Orifice Pressure Settings Gas Piping and PressuresSizing a Gas Supply Line Electrical Supply and Connections Thermostat and Thermostat ConnectionsInstructions to Check Manifold Pressure Typical Wiring Diagrams -- Pages 12 Field Control Wiring Length and GaugeModel Size Speed Form 436, Mfg P/N 98807 Rev 8, Adjusting Belt Tension Thermostat Connections contdFan Motor Blower MotorBlower Speed Adjustment Blower RotationFan Control Limit ControlCombustion Air Proving Switch Burner Air AdjustmentGas Valve Pilot and Ignition SystemCheck Installation and Start-Up Check the installation prior to start-upCheck installation after start-up Start-Up -- Typical Operating SequenceOptional Vertical Louvers Option CD1 Optional Duct Flange Option CD9 Blower Models onlyOptional Vertical Louvers Sizes Range Air Deflection400 4935 550 Conversion Table Diameter to AreaModel Filter Replacement P/N Size Qty Optional Guards Options CD10 & CD12 Blower Models onlyOptional Multiple Heater Control Options CL31 & CL32 Burner Rack Removal Instructions for Burner Rack Removal See FiguresPilot Flame Tubing Sensor Lead Burner Rack Hinged DownBurner Rack Removal contd Burner Orifices Flash CarryoverHeat Exchanger Fan or BlowerFan contd Venter MotorOperating Gas Valve Fan and Limit ControlsTroubleshooting TRO Uble PRO Bable C Ause RemedyFor Service or REPAIR, Follow These Steps in Order Name Address Phone

BE, FE specifications

Thomas & Betts, a subsidiary of ABB, is renowned for its innovative electrical products and solutions, particularly in the fields of connectors, terminals, and wiring devices. Among its extensive product lineup, the FE and BE series stand out for their exceptional performance and versatility in various applications.

The FE (Flat Eye) and BE (Blank Eye) connectors are designed to provide reliable electrical connections in demanding environments. These connectors are particularly well-suited for industrial, commercial, and residential applications, ensuring that they meet the rigorous standards required in these fields.

One of the key features of the FE and BE connectors is their robust construction. Made from high-quality materials, they are resistant to corrosion, moisture, and other environmental factors that could compromise the integrity of the connection. The connectors are engineered to withstand high temperatures and mechanical stress, making them ideal for use in harsh conditions where reliability is essential.

Moreover, the design of FE and BE connectors facilitates easy installation and maintenance. The connectors come with user-friendly features such as a clear labeling system and intuitive locking mechanisms, ensuring a secure fit and minimizing the risk of connection failure. Additionally, these connectors are compatible with various wire sizes, offering flexibility for different projects.

Technologically, Thomas & Betts has integrated advanced manufacturing processes to ensure precision and consistency in the production of FE and BE connectors. This attention to detail results in products that not only meet but often exceed industry standards, providing customers with peace of mind regarding their electrical systems.

In terms of performance, the FE and BE connectors deliver exceptional conductivity, which is critical for minimizing energy loss and ensuring efficient operation in electrical systems. This characteristic is especially important in applications where energy efficiency and reliability are paramount.

In summary, Thomas & Betts FE and BE connectors embody a perfect blend of durability, ease of use, and technological advancement. Their robust design, compatibility with various wire sizes, and resistance to environmental stressors make them a preferred choice for professionals in the electrical industry. With a commitment to quality and innovation, Thomas & Betts continues to set the standard in electrical connectivity solutions, ensuring that their products remain at the forefront of the industry.
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