The system makes use of photovoltaic technology and a unique PTC AC/DC element to heat the water
in the geyser. This differs from the traditional thermal hot water systems where water is cycled from a
collector through pipes to the hot water cylinder by either making use of a 220V pump, 12V pump or
thermo siphoning.
Advantages over thermal hot water systems are as follows:
Any existing geyser can be converted
No Additional plumbing is required
No pumps necessary to circulate water
No risk of damaged panels in frost prone areas
The water temperature can be controlled on very hot summer days – reduced risk of overheating
problems
Suitable in all water conditions
Suitable in areas where the geyser is not situated near the panels
Modular system – can be expanded to build off-grid power system for the home

DC combiner boxes are for connecting parallel PV strings into your MPPT. The box includes several features that reduces the amount of separate components you need to install.

The box offers isolation between the DC voltages that are generated by the PV modules and the solar installation allowing for safety while working or maintaining the system.
With fusing and short circuit protection the PV modules and components can operate optimally with lightning protection included. Combining multiple series strings from the PV modules the unit allows for a single parallel connection to the MPPT charge controller.
Positive and negative poles of each PV string are equipped with special fuse wire, which protects the PV string from fault. It also uses matchable fuse holder and fuse wire to reduce later maintenance cost and guarantee safety
The unit uses photovoltaic HV lightning protector to carry out protection to the positive pole-to-ground and negative pole-to-ground of bus after combination