These models are appropriate for open system applications, where water from a solar collector is pumped into the tank, directly heating the potable water (no internal heat exchange coil).
These Solar models feature an internal single-wall heat exchanger that allows heated water from a solar collector to flow through the coil, transferring heat to the surrounding water.
These models are similar to the EcoStor™ SC except the EcoStor2™ SC features an internal double-wall heat exchanger.
This advanced dual heat exchanger design provides superior installation flexibility by allowing combination heat source systems the ability to operate independently or at the same time with each other. The top heat exchange coil is single-wall and the lower heat exchange coil is double-wall.
The EcoStor Open Loop Solar Gas Backup Models utilize a gas burner as backup when solar energy does not meet the required domestic hot water demand. The main difference between the open and closed loop system (indirect) is that the open loop design does not have an internal heat exchanger.
The Eco-Defender gas backup models also utilize some of the same design features as the atmospheric vent models but incorporate the latest advances in technology and components to meet the most stringent air quality requirements for allowable NOx emissions in the country.
This intelligent design utilizes a low NOx gas burner as a backup when periods of supplied solar energy do not meet the required domestic hot water demand.
The EcoStor Open Loop Solar Power Vent Gas Backup Models utilize a gas burner as backup when solar energy does not meet the required domestic hot water demand.