1. Inspect the water inlet and outlet hoses at the bottom of the unit. The inlet and outlet symbols are clearly marked. If facing the heater, the shower hose should be on the left (outlet), and the inlet should be on the right.
2. Attach the shower hose correctly: The short, wide thread should connect to the heater, and the long, narrow thread should connect to the showerhead.
3. Check water pressure: Hold the inlet hose upwards, turn on the water, and see how high the water rises. It should exceed 2 feet. If the pressure is too low, consider installing a water pump, as low pressure will prevent the heater from functioning.
4. Test the electrical safety system: Press the ELB button—if the switch moves down, the electrical leakage protection is working properly. If it doesn’t move, there may be an issue with the electrical safety system, and the heater should not be used.
Installation Tip: Always connect the heater directly to the main breaker instead of using extension cords, and follow the manufacturer’s recommended wire size for safety.
