Reznor RPB Unit Installation Manual - Manual (Page 25)

Form I-RPB, P/N 131782 R12, Page 25
7.3 Typical Wiring Diagrams (Refer to the diagram supplied with the furnace for alternate
controls or optional equipment details.)
RELAY CONTACTS
TIME DELAY & CAPACITOR
VENTER MOTOR
COMBUSTION
PRESSURE
SWITCH
L1 L2 L1 F L2
8
8 8 10 10
12
1
2 2
RELAY CONTACTS
TIME DELAY
6 6
4
11
6
Y Y
Y W
BK
Y Y Y Y Y
W 12
BL BL R R R
BL
BK BK BK BK BK W
7
7
7 BK BR 21
H TD H
BR
BR
W 20
H TD H
BR 7
BK
BL
W
7
TIME DELAY
RELAY COIL
13 - 25
17
FAN TD
HEATER
BR
CR
17 BR 7 CONTACTOR COIL
BLOWER MOTOR
7 - 8 - 9
7 BR
TERMINAL BLOCK --
HEATER COMPARTMENT
TERMINAL BLOCK --
BLOWER COMPARTMENT
11, 12, L1, L2 & F
1, 2, 4, 6, 7, 8, 10,
12, L1 & L2
2, 6, 7, 8, 10,
RPB SERIES AH2 OR AH3-AG1-CL1 DWG. #B-274964 REV. #2 IJB
OPTIONAL FIELD WIRING
OPTIONAL FACTORY WIRING
FACTORY WIRING
FIELD WIRING
WHITE - W
PURPLE - PR
BLUE - BL
GREEN - G
YELLOW - Y
ORANGE - O
RED - R
BROWN - BR
BLACK - BK
WIRING CODE
TOTAL WIRE MINIMUM RECOMMENDED
LENGTH WIRE SIZE
150 FEET #18 GA.
250 FEET #16 GA.
350 FEET #14 GA.
FIELD WIRING
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
W BK BK
T1
T2
T3
OPERATING SEQUENCE
- SET THERMOSTAT AT LOWEST SETTING.
- TURN ON POWER AND MANUAL GAS VALVE TO UNIT.
- SET THERMOSTAT AT DESIRED SETTING.
- FIRING RATE IS CONTROLLED BY THE THERMOSTAT.
- BLOWER MOTOR OPERATES FROM FAN TIME DELAY.
40 VA. CONTROL
BK
BL
24V
LINE VOLT
BR
R
TRANSFORMER
Y
MAIN
PILOT
SET ANT. AT 1.0 AMPS
OPT. SINGLE STAGE
THERMOSTAT
R W
UNIT AUTOMATIC
LIMIT CONTROL
LIMIT
AUTO RESET
REVERSE FLOW
- SET THERMOSTAT AT LOWEST TEMPERATURE FOR SHUTDOWN.
- BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.
(SEE NOTES) DISCONNECT SWITCH
REDUND
ANT
GAS V
AL
VE
AL
TERNA
TE
W
.R. OR R
OBER
TSHA
W
BL
P
BK
BR
M
AIN
PIL
O
T
M
C
PV
PIL
O
T
MV
PV-MV
M
AIN
REDUND
ANT
GAS V
AL
VE
HONE
YWELL
COM
NC
NO
CONTACTS
FAN TD
1 3
BK
ON 115/460V. UNITS THE CONTROL TRANSFORMER IS A SINGLE VOLTAGE PRIMARY.
- ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY.
- USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.
- USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON THREE PHASE UNIT.
TO PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.
- LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SIZE SHOULD BE OF A SIZE
A TEMPERATURE RATING OF AT LEAST 105 DEGREES C., EXCEPT FOR SENSOR
MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING
- CAUTION: IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE
- DOTTED WIRING AND THE FOLLOWING CONTROLS ARE SUPPLIED AND INSTALLED
- THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:
- 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
LEAD WIRE WHICH MUST BE 150 DEGREES C.
- USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.
BY OTHERS: NONE
NONE
USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25
TIMES THE MAXIMUM TOTAL INPUT AMPS.
- WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH
- DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
FIRING SEQUENCE:
- ON A CALL FOR HEAT BY THE THERMOSTAT.
- THE VENTER MOTOR IS ENERGIZED AFTER A 15 SECOND (APPROX.)
TIME DELAY.
- VENTER FLOW SWITCH SWITCHES FROM N.C. TO N.O. CONTACTS ENERGIZING
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. THE MAIN GAS IGNITES
AND UNIT FIRES AT FULL RATE.
THE PILOT GAS VALVE AND SPARK GAP TO PRODUCE A PILOT
- 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 LOCKOUT CONTROL, IF PILOT IS NOT
ESTABLISHED WITHIN 120 SEC. THE UNIT LOCKS OUT FOR ONE
HOUR, UNLESS IT IS RESET BY INTERRUPTING POWER TO
THE CONTROL CIRCUIT. (SEE LIGHTING INSTRUCTIONS)
M1(4) M2(5)
M3(1) M4(3)
BL
BK
IGNITION
CONTROLLER PROBE
GND
SPARK
FLAME SENSING
MV/PV
MV
SENSE
TH
PV
Y
24V GND
BR
GND BURNER
G
BURNER
GROUND
NOTES:
FIGURE 27 - Typical Wiring Diagram Model RPB, Outdoor, Power-Vented Furnace with Standard
Single-Stage Gas Valve