Tjernlund Auto-Draft FSAD & VSAD Series Inducers 8504090 Rev 11/00 - Manual (Page 10)

9
IMPORTANT: CONFIRM PROPER IMPELLER ROTATION (VSAD-SERIES ONLY)
All Auto-Draft® VSAD-Series Venters must use a Variable Frequency Drive (VFD) supplied by Tjernlund which is factory programmed specifi-
cally for the VSAD model being installed. IMPORTANT: Impeller must rotate counter-clockwise as viewed through Auto-Draft® discharge grille.
Auto-Draft® may appear to be operating properly but if it is only able to produce marginal draft the impeller may be rotating backwards.
Excessive amp draw from the motor may be a sign that the impeller is rotating backwards. Inspect impeller for proper rotation and follow amp
draw procedure below.
1. Depress DSPL key on the VFD until “IOUT” is lit.
2. Adjust speed adjustment knob on VFD clockwise to maximum Venter speed. VFD may trip out on overload ( oLI) shown in drive
display. Amp draw at maximum speed should not exceed amp ratings in “Specifications” on page 1.
3. While running at full speed, if amp draw is excessive or VFD trips out on overload ( oLI), disrupt power to the VFD and switch any
two leads to the M1, M2 or M3 terminal. Reestablish power to the VFD and repeat steps 1 and 2 and confirm proper rotation of
impeller and proper amp draw at maximum Venter speed.
ORANGE
BLUE
GREEN
RED
RED
FSAD-12 WIRING
COOLING FAN
MOTOR
GND
VERTICAL
TILT SWITCH
MOTOR
LIMIT
HIGH
LIMIT
L2
L1
GRAY
BLK
BLK
BLK
BLK BLUE
BLUE
WHT/BRN
HORIZONTAL
TILT SWITCH
*
*
For vertical termination of the Auto-Draft , connect to orange wire and cap off gray wire as shown.
For horizontal termination of the Auto-Draft , connect to gray wire and cap off orange wire.
*
*
R
R
B
C
D
A = COOLING FAN POWER, 208-240VAC/60HZ/0.13 AMPS
B = SAFETY/PROTECTION CIRCUIT THROUGH TILT SWITCHES, 10VA MAX LOAD
C = GROUND CIRCUIT
D = MOTOR POWER - SWITCHED LOAD WITH APPLIANCE CALL, 208-240VAC/60HZ
BLACK
BLACK
THERMOSTAT
FAN
P/N 1303943 10/20/00
BLK
A
INTERNAL FACTORY WIRING OF FSAD-12
BLACK
BLACK
ORANGE
BLUE
GREEN
L2 = WHITE
L1 = RED
FSAD-8/10 WIRING
COOLING FAN
MOTOR
THERMOSTAT
FAN
GND
VERTICAL
TILT SWITCH
P/N 1303942 10/20/00
MOTOR
LIMIT
HIGH
LIMIT
L2
L1
GRAY
BLK
BLK BLUE
BLUE
WHT/BRN
HORIZONTAL
TILT SWITCH
*
*
For vertical termination of the Auto-Draft , connect to orange wire and cap off gray wire as shown.
For horizontal termination of the Auto-Draft , connect to gray wire and cap off orange wire. *
*
R
R
BLK
A
B
C
D
A = COOLING FAN POWER, 110-120VAC/60HZ/0.25 AMPS
B = SAFETY/PROTECTION CIRCUIT THROUGH TILT SWITCHES, 10VA MAX LOAD
C = GROUND CIRCUIT
D = MOTOR POWER - SWITCHED LOAD WITH APPLIANCE CALL, 110-120VAC/60HZ
INTERNAL FACTORY WIRING OF FSAD-8/10