The Problem

 All solar systems have finite energy storage capacity. Over-discharging the batteries is a permanent risk, particularly from “always on” devices like water heaters and refrigerators. We offer 2 different devices to prevent that from happening.

 The GY 12v Controller – for Water Heaters

The GY Controller has 2 versions:

a) With12v/300w Replacement Heating Element, or

b) Using the existing 110/220v heating element

Originally designed for use in sailing yachts, the product is also useful in most canal and river boats. It’s most common use is to manage the water heater to turn it off when the 12v battery charge level drops below 12.2v. However there are other devices to which it could also be connected. Yachts, canal boats, and river cruisers only have hot water if they have been running the engine or are connected to shore power. Moored for any length of time they only have cold water. 

Minimum solar system requirements:

 a) 300w of solar panels and 200Ah of domestic battery capacity

b) 400w of solar panels and 300Ah of domestic battery capacity

Optional:

remote system monitor. 

RESULT: Hot showers and happiness.

 The Super Controller

12v and 48v

The Suoer Controller needs a hybrid inverter and can switch on and off up to 3 connected devices (or groups of devices).

Designed for use in solar systems with hybrid inverters connected to either12 or 48v domestic battery packs and the hybrid inverter mains outlet, it provides up to 3 mains outputs each of which is user configurable in descending battery voltage cutoff points. In summer, most users have more than enough energy from their solar panels, but in winter total production can often be as low as 10% of that in summer. Hybrid inverters shut down completely if voltage falls below a given level.

The SS controller provides the means automatically to switch off “always on” devices in descending priority order (least important first) thus helping to prevent the hybrid inverter shutting down the entire electrical system.

An example of a possible priority order:

1) wine fridge

2) water heater

3) fridge/freezer

RESULT: You awake with the system still active.