The SunCache is an integral collector storage (ICS) system. ICS systems combine the collector and storage tank in a single roof-mounted unit. ICS systems, in general, serve as pre-heaters for conventional electric or gas water heaters, as shown in Figure 1. A SunCache ICS may also be used in conjunction with a tankless, wall-mounted instantaneous gas water heater. In some parts of the world the SunCache may serve as the sole water heater with or without a glazing.
The SunCache ICS also is referred to as a "passive" system because it does not require pumps, thermostats, controllers, sensors, wiring or electricity to make hot water. Your SunCache ICS will neither freeze nor overheat during prolonged periods of disuse if installed and maintained in accordance with the instructions contained in this manual.
