Form RZ-NA-I-FE/BE, Mfg P/N 98807, Rev 10, Page 14
Blower-Type, Power-Vented Model Sizes 25-100 with Intermittent Spark Pilot, Single-Stage Heating,
Natural or Propane, Direct Drive
OPERATING SEQUENCE
1. SET THERMOSTAT AT LOWEST SETTING.
2. TURN ON MAIN AND PILOT MANUAL GAS VALVES.
3. TURN ON POWER TO UNIT.
5. THERMOSTAT CALLS FOR HEAT ENERGIZING THE VENTER MOTOR.
6. VENTER PRESSURE SWITCH CLOSES FIRING UNIT AT FULL RATE AFTER PILOT
8. IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION THE SAFETY SWITCH
CLOSES THE MAIN VALVE AND RECYCLES THE SPARK GAP. ON UNITS EQUIPPED
WITH THE G77ONGC-4 LOCKOUT CONTROL, IF PILOT IS NOT ESTABLISHED WITHIN 120
SECONDS (APPROX.) UNIT LOCKS OUT AND THE UNIT MUST BE RESET BY
INTERRUPTING POWER TO CONTROL CIRCUIT (SEE LIGHTING INSTRUCTIONS).
4. SET THERMOSTAT AT DESIRED SETTING.
PROVING SEQUENCE.
7. FAN CONTROL SENSES HEAT EXCHANGER TEMPERATURE, ENERGIZING THE
BLOWER MOTOR.
NOTES
1. THE FOLLOWING CONTROLS ARE FIELD INSTALLED OPTIONS:
THERMOSTAT
2. THE FOLLOWING CONTROLS ARE FACTORY INSTALLED OPTIONS:
S/W SWITCH AND S/W RELAY
3. DOTTED WIRING INSTALLED BY OTHERS.
4. CAUTION: IF ANY OF THE ORIGINAL WIRING AS SUPPLIED WITH THE APPLIANCE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105 DEGREES C., EXCEPT FOR SENSOR LEAD AND
LIMIT WIRING WHICH MUST BE 150 DEGREES C.
5. USE #14 GA WIRE FOR BLOWER MOTOR CIRCUIT WIRING ON UNIT.
6. USE #18 GA WIRE FOR ALL WIRING EXCEPT BLOWER MOTOR CIRCUIT.
7. LINE AND BLOWER MOTOR BRANCH WIRE SIZES SHOULD BE OF A SIZE TO PREVENT VOLTAGE
DROPS BEYOND 5% OF SUPPLY LINE VOLTAGE.
9. SEE INSTALLATION INSTRUCTIONS FOR GREATER DETAIL.
B 50 USE BLACK MOTOR LEAD, CAP BLUE AND RED, OR USE BLUE MOTOR LEAD, CAP
8. THREE SPEED MOTOR CONNECTIONS ARE AS FOLLOWS:
BLACK AND RED
CAP BLACK AND RED, OR USE RED MOTOR LEAD, CAP BLACK AND BLUE
B 100-75 USE BLACK MOTOR LEAD, CAP BLUE AND RED, OR USE BLUE MOTOR LEAD,
B 25 USE BLUE MOTOR LEAD, CAP BLACK AND RED, OR USE BLUE MOTOR LEAD, CAP
BLACK AND RED
WIRE NUT
FIELD WIRING
OPTIONAL FACTORY WIRING
FACTORY WIRING
CRIMP
TERMINAL
2 4
VENTER CONTACTS
S/W RELAY
4
CONTACTS
2
FAN CONTROL
BK
BK BK
BL/BK
BK BK
BK
L1
(HOT)
BK
VENTER MOTOR
BK
W
S/W
RELAY COIL
BR
PR BR
GROUND TERMINAL
(TERMINAL STRIP)
L2
(COM)
115/1/60
13
31
VENTER RELAY COIL
BL BR
BR BR
R
SET ANTICIPATOR AT 0.8 AMPS
W.R 1C30-339 THERMOSTAT W-S23-6 SUBBASE
W
R
W
PRESSURE
SWITCH
YYYY
LIMIT
CONTROL
Y
GRND.
RECYCLE
G67BG-5
OR
LOCKOUT
IGNITION
CHASSIS GRND.
CONTROLLER
G770NGC-4
1
3
2
4
W
PROBE
GRND
IGNITOR
STRIP
FLAME SENSING
BK
ALTERNATE HONEYWELL
REDUNDANT GAS VALVE
BL
PILOT
OR PV
TH-TR
TH OR
MV
PV-MV
TR OR
MAIN
PILOT
W.R. OR ROBERTSHAW
REDUNDANT GAS VALVE
P
MAIN
M
C
BR
BR
BL
BK
BL
R
PR
BK
FIELD WIRING
TERMINAL STRIP
FACTORY WIRING
WWW
BK BK
BR
BR
BK
G
GRD
CAPACITOR
BL (MEDIUM)
BK (HIGH)
R (LOW)
W
GR
GRD
BLOWER MOTOR
THREE SPEED
BR
BR
BE 25-100 (DIRECT DRIVE) WD# 100565 REV#4
WHITE - W
PURPLE - PR
BLUE - BL
GREEN - G
YELLOW - Y
ORANGE - O
RED - R
BROWN - BR
BLACK - BK
WIRING CODE
CONTROL
BK
R
24V
115 VOLT
BR
TRANSFORMER
Y
BKBK
S/W SWITCH
OPTIONAL
R
Model
Size
Speed
*Medium Low *High Medium High *Medium Low *High Medium Low
Use these
Two Motor
Wire s
*Blue and
White
Red
and
White
*Black
and
White
Blue and
White
Black
and
White
*Blue and
White
Red
and
White
*Black
and
White
Blue and
White
Red
and
White
*Factory-wired speed
25 50 75 100
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