INSTRUKCJA OBSŁUGI

1 Purpose and Functions

The high-quality ACTii AC8462 electric heating element is designed for the efficient heating of domestic hot water (DHW) in tanks, boilers, and heat exchangers with capacities ranging from 50 to 200 liters. The device is optimized for direct operation with renewable energy sources such as photovoltaic (solar) panels and wind turbines.

A key feature of the device is that it is equipped with three independent heating coils of 300W each, housed in a single brass flange. This design allows for flexible power management by bridging the coils or connecting them independently, which is particularly important in systems with variable power output. The heater features universal power supply capabilities – it can operate on both direct current (DC) and alternating current (AC).

Main Features:

• ✔ Flange made of high-quality brass (5/4")
• ✔ Solid construction guaranteeing long service life
• ✔ Three independent heating coils allowing power configuration
• ✔ Heating element made of SUS304 stainless steel
• ✔ Compatibility with 24V photovoltaic and wind systems
• ✔ Gasket included to ensure immediate readiness for installation

2 Technical Specifications

3 Installation and Connection Instructions

Installation Steps:

1. Tank Preparation: Before proceeding with installation, ensure that the DHW tank is emptied of water below the level of the mounting hole.
2. Mechanical Installation: Place the included gasket on the brass flange of the heater. Screw the heater into the 5/4" (1 1/4 inch) tank opening. Tighten with appropriate force using an adjustable wrench, being careful not to damage the brass thread.
3. Electrical Connection:
   • Identify the leads of the three heating coils.
   • For power from a single 24V source with high current capacity, bridge the appropriate contacts to connect the coils in parallel.
   • Ensure that the power cable cross-section is suitable for a current of up to 37.5A (at full 900W/24V power).
4. Leak Check: Fill the tank with water and check for leaks at the flange mounting point.

4 Safety and Operation

• • The device must be grounded in accordance with current electrical safety standards.
• • Installation should be performed by a person with appropriate electrical qualifications.
• • Appropriate overcurrent protection must be used in the DC/AC power circuit.
• • Regularly check the condition of electrical connections – high current at low voltage (24V) promotes heating of contacts if they are loose.
• • In regions with hard water, it is recommended to regularly descale the heating element to maintain high efficiency and prevent overheating of the SUS304 steel.