1 fan control, 4 typical wiring diagrams (cont'd) – Reznor HRPD (Outdoor Duct Furnaces) Unit Installation Manual User Manual
Page 16
Form I-RP/HRPD, P/N 132210 R14, Page 16
FIGURE 11B - Power-Vented Furnace with Optional Two-Stage Gas Valve, W. D. 274996
RELAY CONTACTS
1
3
TIME DELAY
& CAPACITOR
VENTER MOTOR
L1
F
L2
8
10
12
1
2
RELAY CONTACTS
4
5
TIME DELAY
4
11
2
Y
Y
W
BK
Y
Y
W
BL
R
BK
BK
BK
7
7
7
BK
BR
20
H
TD
H
BR
BR
W
19
H
TD
H
BR
7
BK
BL
W
TIME DELAY
RELAY COIL
12 - 24
17
FAN TD
HEATER
CR
17
7
BLOWER RELAY COIL
CUSTOMER'S 24 VOLT
8 VA. MAXIMUM
TOTAL WIRE MINIMUM RECOMMENDED
LENGTH WIRE SIZE
150 FEET #18 GA.
250 FEET #16 GA.
350 FEET #14 GA.
FIELD CONTROL WIRING
BK
8
13
R
R
LOW STAGE
PILOT
HIGH STAGE
BK
Y
BR
7
BL
R
W2
TWO
ST
A
GE THERMOST
AT
SET ANT
. A
T 1.0 AMPS
W1
DISCONNECT SWITCH
LINE/1/60
GRD
G
40 VA. CONTROL
TRANSFORMER
BK
Y
BL
BR
R
OPERATING SEQUENCE
- SET THERMOSTAT SWITCH AT "OFF" POSITION.
- TURN ON POWER, MAIN AND PILOT MANUAL GAS VALVES.
- SET THERMOSTAT SWITCH AT "AUTO" POSITION.
- FIRING RATE IS CONTROLLED BY THE TWO STAGE THERMOSTAT.
- SET CONTROL SWITCH AT "OFF" POSITION FOR SHUTDOWN.
UNIT AUTOMATIC
LIMIT CONTROL
SWITCH
PRESSURE
COMBUSTION
NC
NO
COM
LINE VOLT
24V
TERMINAL BLOCK --
HEATER COMPARTMENT
1, 2, 4, 7, 8, 10, 11,
12, 13, F, L1 & L2
OPTIONAL
- BLOWER MOTOR OPERATES FROM FAN TIME DELAY.
RP SERIES
AH2 OR AH3-
AG2-CL7
WD # 274996
HIGH
STG
HI
PV
PIL
O
T
STG
LO
W
C
MV
REDUNDANT
GAS V
AL
VE
HONE
Y
WELL T
WO
ST
A
GE
PIL
O
T
AL
TERNA
TE
W
.R.
T
WO
ST
A
GE
REDUNDANT
GAS V
AL
VE
R
BL
3
HIGH
STG
4
BK
STG
2
LO
W
1
BR
- BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.
CONTACTS
FAN TD
1
3
(SEE NOTES)
BK
GREEN - G
WHITE - W
PURPLE - PR
BLUE - BL
YELLOW - Y
ORANGE - O
BROWN - BR
BLACK - BK
WIRING CODE
RED - R
FIELD WIRING
FACTORY WIRING
OPTIONAL FACTORY WIRING
OPTIONAL FIELD WIRING
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 #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 ENERGY
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
CUTOFF OR SENSOR LEAD WIRE WHICH MUST BE 150 DEGREES C.
- USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.
BY OTHERS: BLOWER RELAY
NONE
NOTES
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.
FIRING SEQUENCE:
- ON A CALL FOR HEAT BY THE LOW STAGE OF 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 LOW RATE.
- ON A CALL FOR HEAT BY THE HIGH STAGE OF THE THERMOSTAT, THE
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. IF THE 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)
C
7
BL
IGNITION
CONTROLLER
PROBE
GND
SPARK
FLAME SENSING
MV/PV
MV
SENSE
TH
PV
24V GND
BR
GND BURNER
G
UNIT CHASSIS
GROUND
BK
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
13
30
8.1 Fan Control
Service NOTES: To
replace the fan control on
units manufactured prior to
11/04, a replacement kit is
required. Order
P/N 209184.
Prior to 10/03, the fan
control was optional. Check
the wiring diagram on the
furnace.
8.0 Controls
7.0 Electrical Supply and Connections (cont'd)
7.4 Typical Wiring Diagrams (cont'd)
1. A fan control provides for the following control of the field-supplied blower.
(a) After the gas valve opens, there is a time delay of blower operation to prevent
the discharge of cold air.
(b) Blower operation continues after the thermostat is satisfied as determined by
the fan time delay.
2. To be sure that the blower can continue to operate, the power supply to the
furnace
MUST NOT be interrupted except when servicing the unit.
3. If the customer wants the furnace off at night, the gas valve circuit SHOULD
BE OPENED by a single pole switch wired in series with the thermostat. Some
thermostats are provided with this feature. Multiple units controlled from a single
thermostat are shut off in the same manner. For proper operation, be sure the fan
control wiring is observed.