Full Product Manual

Important Safety Instructions

Please save these instructions.

This manual contains important safety, installation, and operating instructions for the charge

controller. The following symbols are used throughout the manual to indicate potentially

dangerous conditions or important safety information.

WARNING: Indicates a potentially dangerous condition. Use extreme caution when

performing this task.

CAUTION: Indicates a critical procedure for safe and proper operation of the controller

NOTE: Indicates a procedure or function that is important to the safe and proper operation

of the controller.

General Safety Information

 Read all of the instructions and cautions in the manual before beginning the installation.

 There are no serviceable parts for this controller. Do NOT disassemble or attempt to repair

the controller.

 Disconnect the solar module and fuse/breakers near to battery before installing or

adjusting the PWM1020CC-DB.

 Install external fuses/breakers as required.

 Do NOT allow water to enter the controller.

 Confirm that the power connections are tightened to avoid excessive heating from a

loose connection.

Charge Controller Safety

 NEVER connect the solar panel array to the controller without a battery. Battery must be

connected first.

 Ensure input voltage does not exceed 30 VDC (for 12V system) or 55VDC (for 24V

system) to prevent permanent damage. Use the Open Circuit (V

) to make sure the

voltage does not exceed this value when connecting panels together.

 Do not exceed 10A (PWM10DB) or 20A (PWM20DB). The Short Circuit (I

) of the solar

array should be less than 10A (PWM10DB) or 20A (PWM20DB).