Install and Operating Manual

Mighty Therm2
Page 21
5.1.1 Changing Single Circuit to Two
Circuits
Sizes 500 to 1500 will be shipped from the factory
for a single 120-volt power supply. To use a separate
circuit for the pump:
1. Ensure power is disabled to the unit.
2. Remove the three jumper wires that connect the
L2, N2 and GROUND wires on terminal block 1
to the main distribution terminal block. These
wires will be black/white, white and green
respectively.
5.2 Field Wiring
Main Power: The main eld wiring connection
points are located inside the line voltage connection/
WARNING
The appliance must be electrically grounded in











Single pole switches, including those of safety
controls and protective devices must not be wired in a
grounded line.
All electrical connections are made in the eld
wiring terminal strip, which is located at the right side of
the appliance.
NOTE:


5.1 Main Power
All Mighty Therm2 non-pump-mounted heaters
require a single 120-volt fused supply. See Figure 15 for
over current protection ratings.
Pump-mounted Mighty Therm2 models 500 to
1500 use a single 120-volt fused supply. The installer
can change these units to use a separate circuit for the
pump, if desired. Instructions to make this change are
found in Section 5.1.1.
Pump-mounted Mighty Therm2 models 1750
and 2000 require two 120-volt fused supplies. See Figure
15 for over current protection ratings.
Figure 16. Mighty Therm2 (500–750) Wiring Diagram.Figure 15. Field Wiring.
 
   
   
500 15 20 15 15
     
     
1250 25 30 15 15
1500 25 30 15 15
     
     