82
JOHNSON CONTROLS
5276178-JIM-C-0118
Installation
FIGURE 26 – FIELD CONTROL WIRING - INPUTS
Wiring Notes
1. Wiring shown indicates typical wiring.
Refer to Section 2 of this IOM for more detailed wiring methods and options.
2. All wiring is Class 2, low voltage.
3. Maximum power available from the 24VAC terminal is 40VA.
4. Use shielded wire where shown.
5. Potentiometer application shown. As an alternative, signal inputs can be driven from an analog output of a third party controller. Note:
Input resistance is 15 K ohms.
6. The FlexSys Underfloor Relative Humidity Sensor is field supplied. In addition to two wires which transmit the 0 to 5VDC signal from the
sensor to the Unit Controller, the Underfloor Relative Humidity Sensor will also need to be powered. The type of voltage required to power
the sensor will depend on the sensor selected. If the sensor uses 24VAC additional wires will need to be run to terminal 1 (24VAC) and
terminal 2 (24VAC COM) of the CTB3 terminal block. If the sensor required a different power source than 24VAC it will need to be field
supplied.
LD14186A
3. Maximum power available from the 24 VAC
1. Wiring shown indicates typical wiring.
4. Use shielded wire where shown.
5. External power supply required.
terminal is 40 VA.
2. All wiring is Class 2, low voltage.
Wiring Notes:
* Use Shielded Wire
* Use Shielded Wire
Closed = Smoke Purge
Closed = Shutdown
Open = Unoccupied
Closed = Occupied
cause equipment damage.
power source external of the unit may
sourced from the unit. Use of another
Note, 24VAC switch voltage must be
Relay Output
VAV Heat
Smoke Purge Input
Shutdown Input
Unoccupied Input
Occupied /
to open full.
command the VAV boxes
output shall be used to
Note: VAV Heat Relay
Common
24 VAC Signal
Open = Normal
0-5V Output
Sensor (Optional)
Common
Signal
CO
Open = Normal
Common
Signal
Space Sensor
7 Wire Thermostat
G (Fan)
Y2 (Cool Stage 2)
Y1 (Cool Stage 1)
W2 (Heat Stage 2)
W1 (Heat Stage 1)
R (24VAC)
COMMON
Sensor
10K Thermistor
M
O
C
-
S
S
+
S
S
)
C
A
V
42(
R
3
1 2
4 5
8
6 7
9 10
13
11 12
14 15
1
Y
2
Y
1
W
2
W G
R
H
K
M
S
)
C
A
V
42(
R
D
S
C
C
O
18
16 17
19 20 21
2
DL
EI
H
S
DL
EI
H
S
CTB3
24
22 23
25 26 27
+T
L
S
-T
L
S
+F
H
U
-F
H
U
Common
Signal
0-5V Output
Underfloor RH Sensor
* Use Shielded Wire
Slab Temp Sensor
* Use Shielded Wire
10K Thermistor
Signal
Common
Flexsys Underfloor Slab
Temperature (Field Supplied)
Flexsys Underfloor
Humidity Sensor (Field Supplied)
24 VDC
24 VDC
5
IAQID-
IAQID+
IAQOD+
HRC
IAQOD-
* Use Shielded Wire
0-5V Output
Common
Signal
Sensor (Optional)
Outdoor CO
2
24VDC
29
28
30
HENT
+
HENT
-
CTB3 FIELD CONTROL WIRING (INPUTS)
Содержание 40 25 TON
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Страница 244: ...244 JOHNSON CONTROLS 5276178 JIM C 0118 Service NOTES ...