... water heater: 1.SRCC,Keymark,CSA,UL,SABS,CE,ISO approved 2.High pressurized 3.OEM retail available ... tank may be installed at any place in a villa flexible. Collector harmonizes with villa’s outlook ... The expansion vessel allows the fluid to safely expand by compressing the air in the chamber. Working temperature ... Seperated pressurized solar water heater which approved by CSA,Solar keymark,SRCC,En12975