Sun Pumps SJT10-120BL User Manual
Page 8
Figure 3 Pressure Tank Installation
3.6 Wiring
Prior to connecting any wires to the controller, be sure you have a system wiring diagram to use as a reference (see figure 3). Guessing at
polarity and connection points is not worth the risk of potential product damage and/or personal injury.
Ensure the wire sizes are of adequate diameter (gauge) to minimize voltage drop. Please refer to a DC voltage loss table or call your
SunPumps dealer for assistance. Wire gauge being too small will cause excessive voltage losses to the motor and will reduce the flow rate of
the pump.
All other system equipment should be installed before proceeding with wiring the controller. Double check polarity and wire termination
tightness before powering up the system.
CAUTION: Photovoltaic panels produce DC electricity when exposed to sunlight. Cover the panels with a blanket or with a non-
opaque material before wiring. Install a disconnect switch between the solar modules and the controller.
Follow the proper color code between the controller and the motor terminals. If the motor turns in the reverse direction the impeller
and diffuser will be damaged and this is not covered under warranty.