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
Page 12
Image 12
Thomas & Betts FE, BE warranty Typical Wiring Diagrams -- Pages 12, Field Control Wiring Length and Gauge
Page 11 Page 13

BE, FE specifications

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