Thomas & Betts FE, BE Typical Wiring Diagrams -- Pages 12, Field Control Wiring Length and Gauge

Page 12

TYPICAL WIRING DIAGRAMS -- Pages 12 - 15

Field Control Wiring Length and Gauge

Total Wire

Distance from

MinimumRecommended

Length

Unit to Control

Wire Gauge

150' (45.7 m)

75' (22.9 m)

#18 gauge

250' (76.2 m)

125' (38.1 m)

#16 gauge

350' (106.7 m)

175' (53.3 m)

#14 gauge

Fan-Type, Power-Vented Model with Intermittent Spark Pilot, Single-Stage Heating, Natural or Propane

OPERATING SEQUENCE

1.SET THERMOSTAT AT LOWESTSETTING.

2.TURN ON MAIN AND PLOTMANUALGAS VALVES.

3.TURN ON POWER TO UNIT.

4.SET THERMOSTAT AT DESIRED SETTING.

5.THERMOSTAT CALLS FOR HEAT ENERGIZINGTHE VENTERMOTOR.

6.VENTERPRESSURE SWITCHCLOSESFIRING UNIT AT FULL RATE AFTER PILOT PROVING SEQUENCE.

7.FANCONTROL SENSES HEAT EXCHANGER TEMPERATURE, ENERGIZING THE FAN MOTOR.

8.IF THE FLAME IS EXTINGUISHED DURING MAIN BURNEROPERATION THESAFETY SWITCH CLOSES THE MAINVALVE ANDRECYCLES THE SPARK GAP. ON UNITSEQUIPPED

WITHTHE G77ONGC-4 LOCKOUT CONTROL, IF PILOTIS NOTESTABLISHED WITHIN 120 SECONDS (APPROX.) UNIT LOCKS OUT AND THE UNIT MUST BE RESETBY INTERRUPTING POWER TO CONTROL CIRCUIT (SEE LIGHTINGINSTRUCTIONS).

NOTES

1. THEFOLLOWING CONTROLSARE FIELD INSTALLED OPTIONS: THERMOSTAT

2. THEFOLLOWING CONTROLSARE FACTORY INSTALLED OPTIONS: S/WSWITCH

3. DOTTED WIRING INSTALLED BY OTHERS.

4. CAUTION: IF ANYOF THE ORIGINAL WIRING AS SUPPLIED WITH THE APPLIANCE MUSTBE

REPLACED, IT MUST BE REPLACED WITH WIRINGMATERIAL HAVING A TEMPERATURE

RATING OF ATLEAST 105 DEGREES C.,EXCEPT FOR SENSOR LEAD AND

LIMIT WIRING WHICH MUST BE 150 DEGREES C.

5. USE #18 GA WIRE FOR ALL WIRINGEXCEPT FAN MOTOR CIRCUIT.

6. LINE AND FAN MOTOR BRANCH WIRE SIZES SHOULD BE OF A SIZE TO PREVENT VOLTAGE DROPS BEYOND 5% OFSUPPLY LINE VOLTAGE.

7. ON 230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGEPRIMARY. FOR 230V.UNITS USE BLACKAND YELLOW LEADS (CAP RED).

FOR 208V.UNITS USE BLACKAND RED LEADS (CAP YELLOW).

ON 115V. UNITS THE CONTROL TRANSFORMERIS ASINGLE VOLTAGE PRIMARY.

FOR 115V.UNITSUSE BLACKAND YELLOW LEADS.

8. SEEINSTALLATION INSTRUCTIONS FOR GREATER DETAIL.

BLACK-BK

 

 

FACTORY WIRING

 

 

 

FIELD WIRING

 

WIRINGCODE

 

 

 

 

BROWN -BR

 

 

OPTIONAL FACTORYWIRING

 

RED- R

 

 

WIRE NUT

 

ORANGE -O

 

 

 

YELLOW -Y

 

 

CRIMPTERMINAL

 

GREEN- G

 

 

 

BLUE- BL

 

 

 

 

PURPLE -PR

 

 

 

 

WHITE - W

 

115/1/60,208/1/60 OR 230/1/60

 

 

L1

 

 

L2

 

(HOT)

 

 

(COM)

 

VENTERRELAY

VENTER MOTOR

W

G

 

 

CONTACTS

 

 

 

BK

BK

BK

BK

GRD

2

4

 

 

 

67

BK

OPTIONAL

 

 

FANMOTOR

W

 

S/WSWITCH

 

 

 

 

BK

BK

BK

BK

BK

BK

BK

 

 

 

 

 

 

FANCONTROL

 

 

 

W

 

 

 

 

BK

BK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

BK

LINEVOLT

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

R

 

 

 

R

 

BR

TRANSFORMER

 

 

 

 

 

 

 

 

 

8

 

 

24V

 

 

 

 

 

 

FIELDWIRING

TERMINALSTRIP

FACTORYWIRING

 

 

 

3

1

 

 

GROUNDTERMINAL

 

 

 

 

 

 

 

 

VENTER RELAYCOIL

 

 

(TERMINALSTRIP)

 

 

 

 

 

 

 

 

BL

 

BR

 

 

BR

 

BR

 

 

 

 

 

 

 

 

 

 

BR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BR

 

BR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W

GRND.

 

 

 

 

 

 

 

 

 

 

 

 

 

STRIP

 

 

 

 

 

R

 

R

 

 

 

 

 

 

 

 

ROBERTSHAWORW.R. REDUNDANTGAS VALVE

 

 

HONEYWELLALTERNATE VALVEGASREDUNDANT

THERMOSTAT339-1C30W.R W-S23-6 SUBBASE ANTICIPATORSET AT 0.8 AMPS

 

 

 

 

 

 

 

CHASSISGRND.

 

TH-TR

 

R

 

 

 

 

 

 

 

G67BG-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECYCLE

 

 

C

BR

 

 

 

 

 

 

 

 

 

 

OR

 

 

 

 

 

 

 

 

 

 

 

 

LOCKOUT

 

 

MAIN

 

 

 

 

 

 

 

 

 

 

G770NGC-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

BK

M

TROR

 

 

 

 

 

 

 

 

 

IGNITION

FLAME SENSING

 

PV-MV

 

 

 

Y

Y

Y

Y

Y

BK

CONTROLLER

 

PROBE

PILOT

TH OR

MAIN

 

 

 

 

 

IGNITOR

 

W

 

BL

 

 

 

 

 

4

 

 

 

 

 

 

W

 

 

PRESSURE

 

LIMIT

 

 

 

 

 

BK

 

 

 

 

 

SWITCH

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

GRND

 

MV

PILOT

 

 

 

 

 

 

 

 

 

 

 

BL

 

 

 

 

 

 

5

 

5

 

 

1

 

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ORPV

 

 

FE25-400 OPT.AH2/AH3 WD#97302 REV#8

CAUTION: If any of the original wire as supplied with the appliance must be replaced, it must be replaced with wiring material having a temperature rating of at least 105oC, except for limit control and sensor lead wires which must be 150oC. See Hazard Levels, page 2.

Form 436, Page 12

Page 11 Page 13
Image 12
Page 11 Page 13
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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