3KW Electric Water Heater Touch Screen Smart Thermostat Heater for Bathtub Pool AC 220‑240V Item Type: Electric Pool Heater Material: Stainless Steel Product Size: Approx. 26 x 16 x 12cm / 10.2 x 6.3 x 4.7in Type 1 Fitting Pipe Joint Size: Thickness: 4mm / 0.16in, Height: 4cm / 1.6in, Outer Diameter Without Thread: 5.7cm / 2.2in Type 2 Fitting Pipe Joint Size: Thickness: 3mm / 0.12in, Height: 4cm / 1.6in, Outer Diameter Without Thread: 5.7cm / 2.2in Model: H30 R1 Product Power: 3KW Working Voltage: AC220-240V Waterproof Grade: IPX5 Current: 13.6A Application: Constant temperature heating Heater Type: Water Heater Applicable Places: Massage bathtub, bathtub SPA Weight: Approx. 2250g / 79.4oz The water heater should be connected to the pipeline of the bathtub circulation system, or to the inlet and outlet of the bathtub pump to ensure that the water flow direction conforms to the user manual on the bathtub water heater; 1. The heater must be installed horizontally. 2. The heater can be installed with the inlet or outlet of the bathtub pump. (Note: it cannot be fixed by binding) 3. PVC Pipe: Cut a specific length of polyethylene from the pump outlet and connect to the nozzle. (Note: The pipe joint size should be the same as the bathtub) 4. Pipe Joints: Clean the PVC pipe joints, then glue the PVC pipes and joints together. (Note: Installation distance between heater and pump) 5. Heater Installation: Separate the connecting nut and connect the PVC pipe to the heater (Note: O ring). Make sure the connection is tight enough. (Note: The connecting nut is made of plastic material, excessive force will cause damage). 6. Connect the knob to the thermostatic heater at the threaded diameter of the fitting, then apply glue to the inside of one end of the fitting joint without threads, and then plug the pipe to be connected (in addition, the outer wall of the pipe is also coated with glue, which makes it easier to firm). 7. After the bathtub heater is installed, it must be checked: If there is a leakage in the pipes or connections: Pour water into the tub and run the pump for 30 minutes to make sure the circulating water system is leakproof. If the heater does not start, try to find the problem in the most common faults provided and their possible solutions.