Fan-Powered Control Boxes - Trane VariTrane VAV Series Installation & Operator's Manual

Figure 23 – Fan-Powered Control Boxes
Fan-powered Control Box
with Electronic or DDC Controls
}
Y
BL
TO VAV
BR
CONTROLLER
R
CAPACITOR
WARNING WARNING
HAZARDOUS VOLTAGE!
DISCONNECT, LOCK OUT AND TAG
ALL ELECTRIC POWER INCLUDING
REMOTE DISCONNECTS BEFORE
SERVICING.
DISCHARGE MOTOR START/RUN
CAPACITORS BEFORE SERVICING.
FAILURE TO DISCONNECT POWER
BEFORE SERVICING CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
CAUTION CAUTION
USE COPPER CONDUCTORS ONLY!
UNIT TERMINALS ARE NOT DESIGNED
TO ACCEPT OTHER TYPES OF
CONDUCTORS.
FAILURE TO DO SO MAY CAUSE
DAMAGE TO THE EQUIPMENT.
NOTES:
1.
2.
DISCONNECT SWITCH, FUSE, & SCR ARE LOCATED
EXTERNAL TO CONTROL BOX.
3.
CAPACITOR IS INSTALLED ON FAN HOUSING.
4. FUSE IS OPTIONAL.
5.
DETERMINED BY MOTOR VOLTAGE ON ORDER.
VOLTAGE FOUND ON UNIT NAMEPLATE.
6. FOR SERIES FAN POWERED TERMINAL UNITS ONLY.
VAV-SVN01E-EN
Wiring
Diagrams
LINE VOLTAGE
OR FROM HEATER TERMINAL
GREEN
GROUND
SCREW
TRANSFORMER
DISCONNECT
BK
SWITCH
BK
BK
BK
2
4
MOTOR
RELAY
BR
1
3
24V
R
TERMINAL
BLOCK
FAN CONTROL BOX
W BK
BR
BR
MOTOR
FAN
3.
DUCT PRESSURE MAIN CONTROL
6.
BK NO
P.E. SWITCH-1
FACTORY INSTALLED
BY OTHERS
OPTIONAL OR ALTERNATE CIRCUITRY
Fan-powered Control Box
with Pneumatic Controls
Duct Pressure Switch Option
N
L1
5.
W
NO
C
2.
NC
W
DUCT PRESSURE
BK
SWITCH
BK
FUSE
4.
W
W
MOTOR
SPEED
CONTROL
Fan-powered Control Box
with Pneumatic Controls
NO
C C
BK
NC NC
P.E. SWITCH-2
BK
OR FROM HEATER TERMINAL
GREEN
GROUND
SCREW
TRANSFORMER
6.
DISCONNECT
SWITCH
BK
BK
2
4
MOTOR
RELAY
BR
1
3
24V
R
TERMINAL
BLOCK
W
BK
BR
BR
CAPACITOR MOTOR
FAN
3.
OR FROM HEATER TERMINAL
GREEN
GROUND
SCREW
DISCONNECT
SWITCH
NO
6.
BK
C
NC
P.E. SWITCH
TERMINAL
BLOCK
W BK
BR
BR
MOTOR
CAPACITOR
FAN
3.
LINE VOLTAGE
N
L1 5.
BK W
2.
BK W
BK
BK
FUSE
4.
W
W
MOTOR
SPEED
CONTROL
FAN CONTROL BOX
LINE VOLTAGE
N
L1
5.
BK W
2.
BK W
BK
BK
FUSE
4.
W
W
MOTOR
SPEED
CONTROL
FAN CONTROL BOX
51