©2013 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-ASTCU14000 11
Big Dipper
®
AST System
Electrical Installation
Big Dipper
®
AST System Electrical Installation
PROPERLY
DISPOSE OF
CONTENTS
DAILY
Electrical Panel
(NOT SUPPLIED)
115VAC Circuit,
From Ground Fault
Circuit Breaker
(NOT SUPPLIED)
*For 230 VAC Units use
230 VAC Circuit
Duplex Outlet
(NOT SUPPLIED)
Big Dipper Automatic Solids Transfer (AST) Models
The Big Dipper W-750-AST model is equipped with one (1) 24 Hour/96 Event
time controller while the W-1250-AST model is equipped with two (2) time
controllers. The timer is located under the hinged lid of the motor enclosure
on top of the lid of Big Dipper (See Timer Operation Instructions). The Big
Dipper should only be plugged into a properly grounded 3 prong 115
VAC or 230 VAC outlet. If possible, the power supply outlet for the Big
Dipper should be connected to an electrical circuit controlled by a ground
fault circuit breaker.
There is a Power Indicator Light that will glow Red if power is being fed to
the unit. If this light is off, power is not reaching the unit.
This Big Dipper unit is shipped from the Factory wired for Simultaneous
Operation. This means the Heater and Motor operate at the same time
under timer control. Continuous Heater Operation is where the Heater is
active at all times. To switch to Continuous Heater Operation, switch the
RED WIRE on the THERMOSTAT with the BLACK WIRE. (Instructions are
on the wiring Diagram in the electrical enclosure.
Note: The Big Dipper unit will not operate when the lid is removed.
Timer
(Under Hinged Lid)
Water Supply
Connection
Electrical Junction
Box (Hidden)
Note:
Time Clock Supplied with
system.
Drawing for reference only.
Equipment must be installed
in compliance with all appli-
cable laws, regulations and
codes, including electrical
codes. Installation should
be performed by a qualified
electrician.
Power Indicator Light
(Hidden)
Big Dipper Electrical Requirements
W-750-AST: 4.6 Amps @ 115VAC 60Hz (535 Watts)
W-1250-AST: 9.1 Amps @ 115VAC 60Hz (1055 Watts)
*For 230 VAC Units:
W-750-AST-E: 2.3 Amps @ 230VAC 50Hz (535 Watts)
W-1250-AST-E: 4.6 Amps @ 230 VAC 50Hz (1055 Watts)
