Always use a certified electrician to install your Sun Flux (or any solar) system. 
Electricity can cause serious injury or death.  

Installation Resources

For Certified Installers Use Only

Sizing the element  and solar array for a Sun Flux install.

Sun Flux maximum open circuit voltage input/ 180VOC, being sure not to exceed 150VMP

Sun Flux maximum power voltage input/ 150VMP, being sure not to exceed 180VOC

Sun Flux minimum & maximum input current: 7 to 16amp.

1. Panel configuration 4 or 5 high powered solar panels in series, 250w to 320w 8 to 10amp and 30 to 37VMP each or no greater than 150VMP or 180VOC in a series configuration. With this configuration a 10amp 2 pole non-polarised DC circuit breaker will be required between the solar array and the Sun Flux unit, (do not use an isolator).

2. Panel configuration 4 or 5 low power solar panels in series then another 4 or 5 panels in parallel, 150w to 240w 5 to 8amp 24 to 37VMP each or no greater than 150VMP or 180VOC in series and parallel configuration. With this configuration when exceeding 10amp a 16amp 2 pole non-polarised DC circuit breaker will be required between the solar array and Sun Flux unit, (do not use an isolator).

Input voltage of 100 to 130VMP use a 3.6kw 16ohm element.

Input voltage of 130 to 150VMP use a 3.0kw 19ohm element.

Note; To size the solar array correctly you must divide the voltage of the solar array by the resistance of the element to determine the maximum current required from the solar array, then you can multiply the current by the voltage of the solar array to determine the maximum wattage you will receive.

EG. 150volts  divided by 19ohm= 7.89amp multiplied by 150volts= 1183.5watts