Sun Pumps SIJ 2.2-1300P-135 BL - Manual (Page 7)

3.4 Wiring
Prior to connecting any wires to the controller, be sure you have a system wiring diagram to use as a reference (see
figure 1). 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.
1. After mounting the controller, turn the on/off switch to the OFF position.
2. If you are using a remote switch, like a float switch, set dip switch 1 to the correct position for the type of switch
being used. (“Normally Open” or “Normally Closed”.) If you are not using a remote switch leave switch 1 off.
3. Verify all remaining dip switches are off at this time.
4. Connect ground rod conductor to the controller chassis ground block.
5. Connect solar module frame ground conductor to controller chassis ground block.
6. Connect the green pump ground conductor to controller chassis ground block.
7. Connect pump motor leads to the corresponding “Pump Motor” terminals on the controller. Red to “Red”, Yellow
to “Yellow” and black to “Black”.
8. Verify the disconnect switch is in the off position. Connect the DC source supply negative (-), the black conductor,
to one of the controller terminals labeled “Negative” on the “Solar Array Input”. (NOTE: The power should be
connected to a disconnect switch and it should be in the OFF position before connecting power to the controller).
9. Connect the DC source supply positive (+), the red conductor, to one of the controller terminals labeled “Positive”
on the “Solar Array Input”. (NOTE: The power should be connected to a disconnect switch and it should be in the
OFF position before connecting power to the controller).
10. Refer to the next section for “Remote Switch” connections and “Adjustment Procedures” for configuration, if
applicable. Sensor type low water cutoff is supported by the controller but not for booster pumps at this time. If
you would like to use one contact SunPumps for assistance.
11. At this point, all system components are installed and wired, double check conductor polarities, wire termination
tightness and controller configuration. With a DC volt meter check the array open circuit voltage (Voc) on the
array side of the disconnect switch and the module polarity. Record the Voc for future reference. You may do this
on the Before Calling Sun Pumps Worksheet near the end of this manual. Check this voltage reading against the
“Voc” range for your specific system in the chart below. (Figure 3)
12. After you have verified the voltage and polarity, switch the disconnect switch on - if the polarity is correct the first
LED light will be on.
13. Turn the “On/Off ” switch to the ON position. The system should be operational. If the system does not start
and turns on any error lights or gives you an error message, proceed to the troubleshooting guide.