Function: 1. Widely used in hot spring and hot tub circulation system with pressure to maintain and heat water temperature. 2. You can also heat cold water, mainly for heating and thermostatic functions, install the heater in the lower level position. 3. This ma features of excellent performance, complete functions, practicality and easy operation. 4. The water heater will start working after filling the tub with water. It is specially designed do hot and cold bathtubs and is suitable do bath SPA. 5. Our do water massage heater requires no special maintenance or programming and is easy to use. Specification: Item Type: do Bathtub Heater Material: Stal Kolor: as shown in the picture! Product Size: Approx. 30x13,5x5,5 cm / 11,8x5,3x2,2 inch Pipe Connector Size: Thickness: approx. 4 mm / 0.16 inch Height: about 4,4 cm / 1,7 inch Without thread outer diameter: about 5,7 cm/2,2 inch Weight: about 1550g/54.7 oz Model: H30-R1 Product power: 3KW Working voltage: AC220-240V Water resistance rating: IPX5 Current: 13,6 A Applicable bath capacity: 1280L Purpose: constant temperature heating Heater Type: Water Heater Applicable places: do massage bath, SPA bath Installation method: 1. The bath heater must be connected do of the hose circulation system, and it can also be connected do of the inlet and outlet of the bath pump so that the direction of water flow is in accordance with the instructions on the bath water heater. 1. The heater must be installed horizontally. 2. The heater can be installed with the inlet or outlet of the bath pump. 3. PVC pipe: cut off the specified length of polyethylene from the pump outlet and connect do of the nozzle. 4. Pipe Connections: Clean PVC pipe connections, then use glue to connect PVC pipe and connectors together. 5. Make sure the connection is tight enough. 6. Connect the do of the thermostat heater on the threaded diameter of the fitting, then apply the do the inside of the fitting without thread, and then insert the connected pipe (additionally, the outer wall of the pipe is also covered with glue, making it firmer). 7. After installing the bath heater, check: If the pipe or connection is leaking: Pour water do of the tub and run the pump for 30 minutes to make sure that the water circulation system does not leak. If the heater does not start, try to find the problem in the most common faults and possible solutions. List of packages: 1 x do bath heater 1 x English Manual 2 x Pipe Connector 2 x Seal Note: 1. To avoid damage caused by inadvertently resetting the thermal switch, on cannot be powered by external switching devices (such as clocks) or connected do a circuit that regularly turns on and off by media.2. Two seals are commonly used do 4 connectors. Using the thermostat, connect the two connectors according to your pipe size requirements and install the gaskets, then turn the knob to both ends of the thermostat. 3.