1 tubular heat exchanger,  2 vent valve,  3 temperature sensor,  4 plate heat exchanger,  5 pressure sensor water,  6 heat exchanger water-to-air,  7 inlet duct,  8 fan,  9 tube bundle heat exchanger,  10 water drain valve,  11 adjustment fittings,  12 heated shell tank with stirrer, 13 drain valve, 14 switch box