Contractor:
P.O.:
Engineer:
Project Name:
Unit Tag:
The manufacturer works continually to improve its products. As a result, the design and speci
fi
cations of each product at the time of order may be changed without notice. Purchaser’s approval of this data set signi
fi
es that the equipment is acceptable under the provisions
of the job speci
fi
cation. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely the manufacturer’s opinion or commendation of its products. York and Af
fi
nity are registered
trademarks of Johnson Controls, Inc., and are used with permission.
Wiring Schematics cont.
Aurora Base with PSC
Transformer
24V
To P2 on
Electric Heat
Board
RV
CC
HP
Condensate
Black
Black
Blue
Blue
LP
T
Yellow
Yellow
FP1
Orange
Orange
RV
Black(15)
Violet
(14)
Green(11)
Brown(23)
NOTE 1
Black/White
Yellow
Red
208V
1
C
2
4
3
2
Black(21)
Black(22)
Black(20)
PB2
1
3
2
Blue
240V
Black
CC
T2
T1
Compressor
C
R
S
Blue
G
L1
L2
Black
208-230/60/1
Unit Power Supply
Violet(7)
Red
Tan(6)
Black(3)
Black(2)
Cap
Ext Pump
1/2 hp Total
208-230/60/1
Pump
G
1
2
PB1
1
2
Pump
Violet(8)
NOTE 2
Gray/White(4)
Black/White(5)
Thermostat
R
C
Y1
O
DH
Y2
G
W
LO
Circuit Breaker
Circuit Breaker
Optional Internal
Hot Water Generation Pump
1
5A
5A
DHW
Pump
Blue
Hot Water
Limit Switch
130°F
Blue
1
2
3
Purple
Traditional
Thermostat
Communicating
Thermostat
AID Tool
Cabinet
HW Switch
NOTE 7
H
M
L
P3
PSC
Blower
Motor
Grn
Wht
Brn
Cap
3 Airflow
Settings
P11
2
3
4
5
1
Brown
Orange
Green
5
2
4
RB
Black
Black(1)
White
RB
White(12)
Black
(13)
NOTE 4
NOTE 6
Water Solenoid
(see Open Loop
Groundwater Systems
section)
T
Black
FP2
Black
CFM
P13
P4
SW1
P5
JW2
P9
LO
O/B
Y2
W
DH
P8
P7
RS485 NET
RS485 NET
P6
RS485 EXP
P3
SW2
On
Future Use
L Output Type
CC – Dual/Single
Acc – Dip 5
Acc – Dip 4
RV – B/O
FP2 – 15
°F/30°F
FP1 – 15
°F/30°F
Com1
LED5
Com2
LED5
Test Mode
F1-3A
P1
C
PWM
1
2
3
4
5
6
7
8
ALM
ALG
ACC COM
ACC NO
ACC NC
R
C
G
Y1
EH2
C
EH1
C
CO
C
R
-
+
C
R
-
+
Off
Fault
LED1
R
Status
LED3
Config
LED2
CC2
CC
F
C
R
F FG CC CCG
CC2
HI
CC2
LO
CC2
G
REVREV FP1 FP1 FP2 FP2 LPS LPS HPSHPS
Aurora Base Control
(ABC)
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-Alarm
Relay
K6-Acc
Relay
F
R
C
CC
G
Y1
C
R
ES
LS
P2
EH1
Y
G
G
G
Traditional Thermostat
Dual Fuel Wiring Diagram
Using Field Installed Relay
Y1
Y2
O
R
C
L
C
R
Fossil Fuel
Furnace
Thermostat
24 VAC
Common
Common
24 VAC
Fault Signal
Reversing Valve
2nd Stage Compressor
1st Stage Compressor
Y1
Y2
O
R
C
LO
ABC Board
G
G
Fan
W
W
Auxiliary Heat Relay
Note 8: Field installed SPST dual fuel relay
(Required for dual fuel installation)
Auxiliary Heat Relay
P2
P1
Auxiliary
Heat Relay
ES
= chassis
Green/Yellow
NOTE 9
SD2500AG 05/21
58
Page _____ of _____
Aston Series
1 - 6 Tons 60Hz
