Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 19
Model XE/HXE, Indoor, Gravity-Vented Furnace with Two-Stage Gas Valve
225632
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
8
10
12
4
11
11
Y
Y
BL
BK
BL
R
7
7
7
BK
BR
19
H
TD
H
BR
GRND.
BR
RECYCLE
G67BG-5
OR
LOCKOUT
IGNITION
CHASSIS GRND.
CONTROLLER
G770NGC-4
1
3
2
4
W
G
PROBE
GRND
IGNITOR
STRIP
FLAME SENSING
BR
BK
BL
16
FAN TD
HEATER
7
8
13
R
R
LOW STAGE
PILOT
HIGH STAGE
BK
Y
BR
7
BL
40 VA. CONTROL
TRANSFORMER
BK
Y
BL
BR
R
R
LIMIT
CONTROL
LINE VOLT
24V
B
W
VENT SWITCH
BLOCKED
MANUAL RESET
Y
R
CONTACTOR COIL
BLOWER MOTOR
7 - 8 - 9
CR
16
BR
10
8
OPTIONAL S/W
SWITCH
W1
W2
Q674G SUBBASE
SET
ANT
. A
T
0.8 AMPS
R
OPT
. T874F THERMOST
AT
1/60 OR 3/60
LINE
GRD
G
R OR W
R OR BK
R
PROTECTED
BLOWER
MOTOR
INTERNALLY
CONTACTOR
BLOWER MOTOR
CONTACTS
L2
L3
L1
Y
BK
BK
T1
T2
T3
R
HIGH STG
HI
PV
PILOT
STG
LOW
C
MV
REDUNDANT
GAS V
A
LV
E
HONEYWELL
TWO
ST
AGE
BK
BK
(SEE NOTES)
DISCONNECT SWITCH
CONTACTS
FAN TD
1
3
WHITE - W
PURPLE - PR
BLUE - BL
GREEN - G
YELLOW - Y
ORANGE - O
RED - R
BROWN - BR
BLACK - BK
WIRING CODE
PILOT
AL
TERNA
TE W
.R.
TWO ST
AGE
REDUNDANT
GAS V
A
LV
E
R
BL
3
HIGH STG
4
BK
STG
2
LOW
1
BR
TOTAL WIRE MINIMUM RECOMMENDED
LENGTH WIRE SIZE
150 FEET #18 GA.
250 FEET #16 GA.
350 FEET #14 GA.
FIELD CONTROL WIRING
OPTIONAL FIELD WIRING
OPTIONAL FACTORY WIRING
FACTORY WIRING
FIELD WIRING
TERMINAL BLOCK -- HEATER COMPARTMENT
4, 7, 8, 10, 11, 12, 13, B & W
ON 115/460V. UNITS THE CONTROL TRANSFORMER IS A SINGLE VOLTAGE PRIMARY.
9. ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY.
PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.
5. LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SHOULD BE SIZED TO
2. DOTTED WIRING INSTALLED BY OTHERS.
1. THE FOLLOWING CONTROLS ARE SUPPLIED BY REZNOR FOR FIELD INSTALLATION:
FOR 115/460V. UNITS USE BLACK AND YELLOW LEADS.
FOR 208V. UNITS USE BLACK AND RED LEADS (CAP YELLOW).
FOR 230V. UNITS USE BLACK AND YELLOW LEADS (CAP RED).
8. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.
NONE
NOTES
4. 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 105° C., EXCEPT FOR BLOCKED
VENT SWITCH AND SENSOR LEAD WIRE WHICH MUST BE 150° C.
6. USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON 3 PHASE UNIT.
THERMOSTAT AND SUMMER/WINTER SWITCH
3. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:
7. USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.
USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25
TIMES THE MAXIMUM TOTAL INPUT AMPS.
10. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH
11. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.
7. IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION THE
SAFETY SWITCH CLOSES THE MAIN VALVE AND RECYCLES THE SPARK GAP.
ON UNIT EQUIPPED WITH G770NGC-4 LOCKOUT CONTROL, IF PILOT IS
NOT ESTABLISHED WITHIN 120 SECONDS (APPROX.) UNIT LOCKS OUT
AND MUST BE RESET BY INTERRUPTING POWER TO CONTROL CIRCUIT
(SEE LIGHTING INSTRUCTIONS).
OPERATING SEQUENCE
1. SET THERMOSTAT SWITCH AT "OFF" POSITION.
2. TURN ON POWER, MAIN AND PILOT MANUAL GAS VALVES.
3. SET THERMOSTAT SWITCH AT "AUTO" POSITION.
(B) BLOWER MOTOR OPERATES FROM FAN TIME DELAY.
(A) FIRING RATE IS CONTROLLED BY THE TWO STAGE THERMOSTAT.
4. ON A CALL FOR HEAT BY THE LOW STAGE OF THE THERMOSTAT.
(A) THE PILOT GAS VALVE AND SPARK GAP ARE ENERGIZED TO PRODUCE
A PILOT FLAME ON EACH OPERATING CYCLE. THE SENSING PROBE
PROVES THE PRESENCE OF THE PILOT FLAME AND ENERGIZES THE
SAFETY SWITCH PORTION OF THE CONTROL. THE SWITCH ACTION
DE-ENERGIZES THE SPARK GAP AND ENERGIZES THE MAIN VALVE.
5. ON A CALL FOR HEAT BY THE HIGH STAGE OF THERMOSTAT, THE UNIT FIRES
6. SET THERMOSTAT SWITCH AT "OFF" POSITION FOR SHUTDOWN.
THE MAIN GAS IGNITES AND UNIT FIRES AT LOW RATE.
AT FULL RATE.
8. SET SUMMER/WINTER SWITCH AT "ON" POSITION (CLOSED) FOR CONTINUOUS
BLOWER OPERATION.
(A) BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.
XE: AH2/AH3-AG2-CH1-CL7 DWG. #225632 RSM
