
©2007 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specifications subject to change without notice
Thermaco, Inc. • 646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone (336) 629-4651
MNL-IS14000 11
®
Big Dipper
®
IS System
Wiring Diagram
NOTE:
220-240V Units (International Units) have the
following wire color changes:
On the POWER SUPPLY CORD:
The Black Wire becomes Brown
The White Wire becomes Blue
The Green Wire becomes Yellow/Green
Wiring Diagram For Big Dipper Models
W-150-IS Through W-500-IS
MOTOR
HEATER
THERMOSTAT
GREEN
BLACK
WHITE
BLACK
WHITE
WHITE
BLACK
BLACK
PIGGY-BACK
CONNECTOR
FULLY INSULATED
FEMALE CONNECTOR
BLACK
RED
INTERCHANGE FULLY
INSULATED QUICK
CONNECTORS TO
CHANGE HEATER
OPERATING MODE.
RED WIRE TO
THERMOSTAT GIVES
SIMULTANEOUS
HEATER/MOTOR
OPERATION. BLACK
WIRE TO
THERMOSTAT GIVES
CONTINUOUS
HEATER OPERATION.
NEON
LAMP
GREEN
GREEN
GROUND WIRE ATTACHED
TO HEATER
POWER SUPPLY CORD
FULLY INSULATED
QUICK CONNECT
FULLY INSULATED
QUICK CONNECT
RING TERMINALS TO GROUND STUD
ON MOTOR MOUNT BRACKET
INTERLOCK
SWITCH
WHITE
WHITE
WHITE
TIMER
BLACK
BLACK
RED
1
2
3
4
5