8 . 80 gallon solar heat exchanger tank S  . Solar collector (4’ X 10’) St  . Standard roof mounting equipment Bi  . Bio-degradable, non-toxic heat transfer fluid Al . All closed loop connections and fittings Cl  . Closed loop thermal expansion tank Ci . Circulating pump Di . Differential temperature control with (2) sensors [...]
 Heat collecting devices: Tri-super high efficient vacuum collector Water tank inner: 0.5mm 2B stainless steel sheet  Water tank casing: Imported creamy white color steel  Heat insulating material: 55mm imported polyurethane  Gasket: High polymer Si rubber  Water tank metal cover: 1.0mm thickening aluminum alloy  Bracket material selection: Select the bracket type according to actual using status [...]