Page 39 of 80
I/O FLEX EX8160 EXPANDER
LLS1: Liquid Line Solenoid #1
BOS1: Bleed Off Solenoid #1
Supply Fan 24V Control Kit
C
TB1
C
TB1
BOS
TB1
TB1
W1
TB1
G
TB1
LS1
+A6
TB1
-A6
TB1
SF1C
BOL
X2
NC
W1
C
-
+
AIR HANDLER UNIT
CONDENSER UNIT
24VAC
24VAC
24VAC
24VAC
24VAC
ANALOG
OUTPUT
24VAC
PK
BL
BL
BL
BL
W
BK
Y
Shielded Twisted Wire # 18
Electric Heater
8
7
7
BI-4
8
UI-8
SF-APS
1
3
DxLAT1
tem
p
co
m
ou
t
pw
r
TB-A
24VDC
SA-T/RH
6
UI-3
7
5
BINARY
INPUT
ANALOG
INPUT
Shielded Twisted Wire # 18
Shielded Twisted Wire # 18
ANALOG
INPUT
I/O PRO 812U CONTROLLER
UI-8
UI-3
UI-4
BI-4
ABBREVIATION
COLOR
BK
BLACK
BL
BLUE
BR
BROWN
G
GREEN
O
ORANGE
PK
PINK
PR
PURPLE
R
RED
W
WHITE
Y
YELLOW
WIRE COLOR LEGEND
NOTE: NUMBER PLACED AFTER DASH
FOLLOWING COLOR CODE INDICATES WIRE
GAGE. EX. - BK-12 IS A BLACK, 12 AWG WIRE.
NO NUMBER AFTER COLOR CODE INDICATES 18
AWG WIRE. EX. - BK IS A BLACK 18 AWG WIRE.
FACTORY WIRING
FIELD WIRING
TERMINAL BOARD
SYMBOL LEGEND
USE 18 AWG WIRE MINIMUM. TO MINIMIZE INTERFERENCE PROBLEMS:
USE SHIELDED WIRE ON ALL ANALOG INPUTS AND OUPUTS. DO NOT RUN 0-10 VOLT
DC SIGNAL WIRING IN THE SAME CONDUIT AS LINE VOLTAGE WIRING OR WITH
WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS SUCH AS CONTACTOR AND
RELAY COILS. GROUND ONE END OF THE DRAIN (SHIELD) WIRE.
WHEN 0-10 VOLT DC SIGNAL WIRING MUST CROSS CLOSE TO CABLE OR
NONMETALLIC CONDUIT CONTAINING LINE VOLTAGE WIRING OR WIRING THAT
SWITCHES HIGHLY INDUCTIVE LOADS, IT MUST CROSS PERPENDICULAR (90
DEGREES) TO IT.
KEEP THE 0-10 VOLT DC SIGNAL WIRING AS SHORT AS POSSIBLE.
Wire Size
Max. Run from Condensing
Unit to AHU or Longest Run
18 AWG
50 Feet
16 AWG
75 Feet
14 AWG
100/125 Feet
12 AWG
150/200 Feet
Low Voltage Wiring: For commercial equip.;
minimum size of 24 volt class 2 wire.
For the BACview Keypad or RS/ZS Sensor (when used),
Shielded Wire # 18 can go 500 ft run. All other Shielded Wire
# 18 can go 1000 ft run.
Set dial on Air Proving Switches
(APS) so that the points to 0.2.
Do not set the dial to as this
will cause “HAND” alarms that
will need to be manually reset.
Figure 12: Example Electrical Wiring Diagram - Condensing Section, Cont.
RC/FC Series Installation, Operation, and Maintenance Manual