Boliler 1.CE,PED for solar boiler 2.OEM for solar boiler 3.High ... Boiler1.CE,PED, CCC,ISO9001,ROHS approved!2.OEM service,and customers design accepted 3.High ... inside coil, it is stainless steel pipe for water flow; and for outside coil it is copper ... heater(kw)1.5Domestic hot water thermostat(degree centigrade)60Mg Anode(mm)22*300Heat exchanger surface for water(square meter)1Heat losses/day(kw) 1.2 ...