GRUNDFOS Grundfos Circulation Pump COMFORT 15-14 BX TU DACH – 93094391

The COMFORT 15-14 BX TU COMFORT TU is an efficient circulation pump designed for hot water circulation in residential buildings with a dedicated return line. These pumps are compatible with all types of hot water storage tanks, instantaneous water heaters, solar systems, and heat pumps, regardless of whether mixing or balancing valves are installed in the system. The pump features a compact housing and a permanent magnet motor with an integrated control unit. The spherical rotor with an impeller ensures optimal function, supported by a robust single-ball bearing system. The pump housing, made of drinking water-approved brass, guarantees safety and reliability. The COMFORT TDT also has a built-in temperature sensor to accurately maintain the water temperature. The user-friendly interface features LEDs and push buttons on the control panel. This allows for intuitive display and adjustment of operating times and control modes, ensuring a comfortable and energy-efficient user experience in residential areas. The "Timer" control mode allows the pump to operate continuously based on the set operating times, with the smallest time interval being 30 minutes. In the event of a power outage, the timer is interrupted without power reserve. However, the selected operating times and the current time are saved. After power is restored, the pump resumes its last set operating state. If the power outage lasts longer than 15 minutes, the current time may need to be reset. The timer and temperature control allow the pump to operate based on the set operating times and the functions of the temperature control. The operating times take precedence. This means that temperature operation is only active during the set operating times. In this control mode, the pump is automatically activated when the internal temperature sensor detects that the water temperature drops below a certain value. The control mode automatically adjusts the on/off temperature to the maximum temperature measured in the system. The maximum system temperature is measured every 12 hours for 15 minutes to allow for dynamic adjustment of the on/off temperature. Product features: {_BL_} Q/H performance, designed for single and multi-family homes, depending on the required operating point, to account for heat losses in the respective piping system. {_BL_} Heat losses reduced by 56% compared to a pump in continuous operation. {_BL_} Low power consumption and quiet operation. {_BL_} Complies with flow rate limits of pipe manufacturers, including DN 15, DN 20 PEX, copper, and others. {_BL_} Approved for drinking water; thanks to the brass pump housing, stainless steel rotor, and composite impeller. {_BL_} A design that facilitates the removal of scale and dirt deposits by disassembling the headpiece, allowing the product to meet the requirements for unlimited water hardness. {_BL_} Dry-running protection to prevent failure if the system no longer contains water. {_BL_} Various mounting positions, even with the pump head facing downwards. {_BL_} A pump head designed to mount brass pump housings from old and new pumps of the same design, even from different pump manufacturers (such as Wilo, Vortex, Lowara, DAB, and others). {_BL_} Easy electrical installation with pre-assembled power plug with a 1.5 m cable and a double insulation protection design, eliminating the need for an earth cable. {_BL_} Thermal insulation shells to reduce heat losses. {_BL_} Shut-off and check valves included in BX versions reduce installation costs. {_BL_} An optional venting flange that provides a simple solution for venting or draining the system without the need to install an additional permanent venting valve. {_BL_} Optional fittings for pipe connections in various sizes and types. {_BL_} Optional check valves and shut-off valves are available.