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This document describes the VCZ series of three-way kit valves from AERMEC, designed for use with FCZ, FCX, FCS, FHX, and VEC series fan coils. The manual provides installation instructions and technical specifications in multiple languages, including English, Italian, French, German, and Spanish.
The VCZ three-way kit valve is an "all or nothing" type valve, meaning it is either fully open or fully closed, and is normally closed. It is designed to regulate water flow in fan coil units, enabling control over heating or cooling. The kit includes the valve, an actuator, and the necessary hydraulic fittings. These valves can be installed on fan coils with either right or left connections. The valve's operation is controlled by specific control panels that support valve management.
The VCZ series includes models VCZ 41, 42, 43, 4124, 4224, and 4324.
The flow direction in the valve is critical for proper operation. When the valve is powered, the flow is from A to AB. When the valve is not powered, the flow is from B to AB.
The VCZ kit valves are designed for straightforward integration into existing fan coil systems. They are compatible with a wide range of AERMEC fan coil units, including FCZ, FCX, FCS, FHX, and VEC series. The kit includes an insulating shell for the valve body, which is essential for preventing condensation, especially in cold water circuits, thus avoiding water spillage into the environment.
Installation requires careful attention to the flow direction, indicated by an embossed symbol on the valve body. The valve body must be installed without excessive torsion. The kit also includes a minimum temperature probe (SW) that needs to be detached from the coil and fastened to the upstream delivery pipe of the valve using a specific probe holder. This probe helps monitor the system's temperature.
Electrical connections are made to the unit's control board, following the wiring diagrams provided in the fan coil or control panel manuals. Hydraulic connections are made directly to the valve using 1/4" flat sealing gaskets on the plant side, and O-ring seals manage connections between the valve kit and the fan coil coil.
Maintenance primarily involves ensuring proper installation and periodic checks. The manual emphasizes that electrical wiring, fan coil installation, and accessory setup must only be performed by qualified technical professionals. Key checks include measuring the electrical system's insulation strength and testing the continuity of protection wires.
During any intervention, it is crucial to disconnect the power supply and use appropriate individual protection devices to prevent electric shock. If the valve needs to be disassembled, the gaskets must be replaced with new ones of the same characteristics to ensure proper sealing. All tubes, valves, and fittings must be completely insulated, and any exposed tubes or joints should be re-insulated to maintain efficiency and prevent condensation. Regular inspection of the insulation can help identify and address any degradation over time.
General| Brand | AERMEC |
|---|---|
| Model | VCZ41 |
| Category | Control Unit |
| Language | English |
