Kit Installation Tutorials Below is a sequence of YouTube Videos which will demonstrate the installation process for various kits, with product numbers included: Lower Heating Element K0308000 Solenoid Valve K01060000 Variable Speed Pump K01100000 Water Heater Module Rear Block K01120004 Flowmeter K01170000 Heating Element Upper K03080000 Temperature Sensor K03090000 55G Water Level Float Switch K03090002 Heating Element Temperature Sensor Lower K06010008 User Interface S00100004 Electronic Control Board S03030000 14VDC 50W Power Supply S03040000 12 V 2Ah Li-Ion Battery S03040001 Heating Element Temperature Sensor Upper K06010008