Long Stroke Linear Actuator. Heavy Duty Linear Actuator. Fest Speed Linear Actuator. Mini Micro Linear Actuator. Reciprocating Cycle Linear Act. Extend Your Swimming Season with Efficient Pool Heating. Control Panel Operation Notes. Connect water and power supply, and perform water & electricity inspection before use. After pressing the switch button? , the display will immediately show the internal. And the equipment has been started. Set water temp: first press the button? , when the temperature flashes, press Button? Or? To adjust to the desired temperature. To set the timer: first press Button? , then press Button? Or? To adjust to the desired time. (adjustable range: 1-15 hours). If the water flow indicator does not light up, check if the circulation pump is on. If the pump is on, verify its. And head, and replace with a higher-flow pump if insufficient. When the heating & constant temperature indicator flashes, the unit is in heating mode. Itching between? And? , the heater is equipped with a digital touch screen display for precise contro. L of the heating time and temperature. And monitor water flow and heating status. When the temperature falls below the preset temperature, the heater will automatically turn on again. High temperature protection switch, The hot tub thermostat’s 316 stainless steel heater tubes provide faster heat transfer and longer lasting performance, with higher resistance to rust than 304 stainless steel, ensuring your pool stays warm and inviting year-round. Built-in fuse security protection, including: anti-dry burn, water shortage auto shut-off and temperature control start/stop. Season and significantly reduce energy costs, your comfort and enjoyment while maintaining the pool’s constant temperature. The 11/18KW high power unit that is not powered by a plug, but by hardwiring. Please have it installed by a licensed electrician to ensure proper operation. Please read the product manual carefully before installation and follow the manual requirements. Operates at 220V via split-phase power, needs two separate 110V hot wires for installation. Turn on the water pump first, then the thermostat. When shutting down, turn off the thermostat first, wait for a moment (depending on the power of the thermostat, ranging from 10 seconds to 1 minute) and then turn off the water pump. A reliable leakage protection device must be installed! It must be installed and debugged by a certified electrician! Regular inspection and maintenance. Must be carried out monthly. (Non-certified electricians are prohibited from installing this device). The entire machine is warranted for one year, excluding cases of improperuse or operation by the user and excluding wear parts. It is more effective when used as auxiliary heating. For direct heating, machine with higher power should be selected. The thermostat is prohibited from using booster pumps and can only use circulating water pumps (flow rate/head can refer to the recommended table). If any quality or safety issues arise from the use of booster pumps, the customer shall bear the responsibility themselves. During installation, the inlet and outlet pipes must not be smaller than the reserved inlet and outlet pipe connectors on the thermostat device. For example, if the reserved inlet and outlet connectors of the thermostat are external threads. 5.5KW-18KW: 1.5. If the inlet and outlet pipes are too thin, it will lead to insufficient flow, excessive pressure in the machine’s inner tank, which can damage the thermostat and pose safety hazards. For this 11kW / 18kW pool heater, a circulation pump with 1-3 HP is sufficient to meet the required flow rate.