FORM 100.50-NOM7 (808)
11
JOHNSON CONTROLS
1
CTB3 FIELD CONTROL WIRING
FIG. 1 – FIELD CONTROL WIRING
LD 13849
CTB3 FIELD CONTROL WIRING
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
* Use Shielded Wire
Closed = Smoke Purge
Closed = Shutdown
Open = Unoccupied
Closed = Occupied
1.5K Adjust
Signal
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
Potentiometer
Common
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
RTD Sensor
1K Nickel
-QAI
+QAI
MOC
-ASS
+ASS
-SS
+SS
)CAV 42( R
31 2 4 5 86 7 9 10
13
11 12 14 15
1Y
2Y
1W
2W
G
MOC
RH
KMS
)CAV 42( R
DS
CCO
1816 17 19 20 21
2
DLEIHS
DLEIHS
CTB3
2422 23 25 26 27
R
+TLS
-TLS
+FHU
-FHU
RVE
Common
Signal
0-5V Output
Underfloor RH Sensor
* Use Shielded Wire
Closed = Lower Evap. Temperature
Open = Normal Evap. Temperature
Slab Temp Sensor
* Use Shielded Wire
1K Nickel
Signal
Common
Flexsys Evap. Temperature
Reset Input
Flexsys Bypass Filter
Dirty Filter Switch
(Field Installed)
Closed = Dirty Filters
Open = Clean Filters
Flexsys Underfloor Slab
Temperature (Field Supplied)
Flexsys Underfloor
Humidity Sensor (Field Supplied)
To Terminal W38 on
Secondary Controller
24 VDC
24 VDC
5
To Next Page
Loading...
Need help?
General
