Form I-XE/CRGB/RPB, Page 18
Typical Wiring Diagrams
(Refer to the diagram supplied with the furnace for alternate controls or
optional equipment details.)
Model XE/HXE, Indoor, Gravity-Vented Furnace with Single-Stage Gas Valve
12. Electrical Supply and Connections (cont'd)
Wiring Requirements for Maxitrol Systems (cont'd)
Remote Console
If the unit being installed includes an optional console, it is shipped
separately for field installation. All consoles include indicator lights for
the blower and burner. Consoles may include a dirty filter indicator
light, a cooling indicator light, an on/off switch, a summer/off/winter
switch, a heat/vent/cool switch, a potentiometer, a thermostat, and/or a
Maxitrol temperature selector. Consoles are shipped separately for
remote installation and may be either mounted on a wall or recessed.
Field Control Wiring - Length and Gauge
Total Wire
Length
Distance from
Unit to Control
Minimum Recommended
Wire Gauge
150 ft (46M )
75 ft (23M )
#18 gauge
250 ft (76M )
125 ft (38M )
#16 gauge
350 ft (107M )
175 ft (53M )
#14 gauge
225631
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
B
W
4
11
11
Y
Y
BL
BK
BL
R
7
7
7
BK
BR
21
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
15
FAN TD
HEATER
CR
15
7
CONTACTOR COIL
BLOWER MOTOR
7 - 8 - 9
MAIN
PILOT
BR
7
R
LIMIT
CONTROL
8
BL
R
BR
LINE V
24V
R
Y
Y
BK
BK
BL
BR
12
MANUAL RESET
BLOCKED
VENT SWITCH
Y
40 VA CONTROL
TRANSFORMER
SET ANT. AT 0.8 AMPS
OPT. SINGLE STAGE
THERMOSTAT
R
W
8
10
10
8
R
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
OPTIONAL
SUMMER/WINTER
SWITCH
PV
PILOT
MV
PV-MV
MAIN
REDUNDANT
GAS V
A
LV
E
HONEYWELL
BK
BK
(SEE NOTES)
DISCONNECT SWITCH
CONTACTS
FAN TD
1
3
TOTAL WIRE MINIMUM RECOMMENDED
LENGTH WIRE SIZE
150 FEET #18 GA.
250 FEET #16 GA.
350 FEET #14 GA.
FIELD CONTROL WIRING
WHITE - W
PURPLE - PR
BLUE - BL
GREEN - G
YELLOW - Y
ORANGE - O
RED - R
BROWN - BR
BLACK - BK
WIRING CODE
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.
7. USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.
6. USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON 3 PHASE UNIT.
PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.
5. LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SHOULD BE SIZED TO
TEMPERATURE RATING OF AT LEAST 105° C., EXCEPT FOR
MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A
4. CAUTION: IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE
3. DOTTED WIRING AND THE FOLLOWING CONTROLS ARE SUPPLIED AND INSTALLED
2. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:
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).
THERMOSTAT AND SUMMER / WINTER SWITCH
BLOCKED VENT SWITCH AND SENSOR LEAD WIRE WHICH MUST BE 150°S C.
8. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.
BY OTHERS: NONE
NONE
NOTES
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.
2. 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 AT LOWEST SETTING.
2. TURN ON POWER, MAIN AND PILOT MANUAL GAS VALVES.
1. ON A CALL FOR HEAT BY 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 PORTION OF
THE CONTROL. THE SWITCH ACTION DE-ENERGIZES THE SPARK GAP AND
ENERGIZES THE MAIN VALVE. THE MAIN GAS IGNITES AND UNIT FIRES AT
4. SET THERMOSTAT AT LOWEST SETTING FOR SHUTDOWN.
(B) THE BLOWER MOTOR OPERATES FROM FAN TIME DELAY.
3. SET THERMOSTAT AT DESIRED SETTING.
FIRING SEQUENCE:
FULL RATE.
(A) FIRING RATE IS CONTROLLED BY THE THERMOSTAT.
5. SET SUMMER / WINTER SWITCH AT "ON" POSITION (CLOSED) FOR CONTINUOUS
BLOWER OPERATION.
(A) BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.
REDUNDANT
GAS V
A
LV
E
AL
TERNA
TE W
.R. OR ROBER
TSHA
W
BL
P
BK
BR
MAIN
PILOT
M
C
XE: AH2/AH3-AG1-CH1-CL1 DWG. #225631
RSM
OPTIONAL FIELD WIRING
OPTIONAL FACTORY WIRING
FACTORY WIRING
FIELD WIRING
TERMINAL BLOCK -- HEATER COMPARTMENT
4, 7, 8, 10, 11,
12, B & W
may cause the unit to function erratically or may destroy the amplifier.
If shielded wires are used, shield must be insulated and grounded at the
amplifier location only.
