... : 3year for system,5year for vacuum tube. Detailed Product Description:split pressurized solar water heater:heat collectorwater tankworking station kit Working ... not reach the Tm ax, then start the auxiliary heating device.Features:1. collector separates with the storage tank, the tank ... Bathing, Washing, domestic heating, etc..7. work at anytime, enjoyable device.8. Model No.: 100L, 150L, 200L, 300L