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Fan coil installation and maintenance instructions
**Installation and Maintenance Instructions for Fan Coil Units**
Fan coil units are essential components in HVAC systems, providing efficient heating and cooling. To ensure optimal performance and longevity, proper installation and maintenance are crucial. Below are detailed guidelines to help you install and maintain your fan coil unit correctly.
**1. Unit Installation**
1.1 Handle the unit with care during transportation. Avoid using the impeller or volute as a lifting point, as this can cause damage.
1.2 Ensure all internal components remain intact and prevent foreign objects from entering the volute or cooler section.
1.3 The main body of the unit must be installed horizontally. Failure to do so may result in improper condensate drainage, leading to leaks.
1.4 The unit should only support its own weight. Do not attach pipes or other heavy components directly to it. Make sure there is sufficient space around the unit for easy access during maintenance.
**2. Pipeline Configuration**
2.1 Connect the inlet and outlet pipes flexibly in the direction of water flow. Avoid applying excessive force during installation.
2.2 All piping, including condensate lines and valves, must be sealed properly. Insulation materials should be treated carefully to prevent moisture from penetrating and causing damage.
**3. Electrical Wiring**
3.1 The unit requires a power supply of 220V ±10% at 50Hz.
3.2 Follow the electrical schematic diagram precisely when wiring. Incorrect wiring can damage the motor.
3.3 Never share a single switch among multiple units, nor connect any two speed settings (high, medium, low) on the same circuit. This can lead to motor failure.
3.4 A grounding bolt is provided in the junction box for connection to the protective grounding system.
**4. Water Supply Requirements**
4.1 During summer operation, the supply water temperature should be no lower than 5°C. In winter, hot water should not exceed 80°C. Water quality must be clean and softened. Avoid using steam or water above 85°C, as this can cause overheating and damage.
4.2 If the unit will be out of service for an extended period, fill the coil with water to reduce corrosion.
4.3 In winter, if the unit is not in use or being commissioned, drain the coil completely or take anti-freeze measures to prevent pipe freezing and cracking.
**5. Additional Notes**
5.1 Before the first operation or when switching between heating and cooling modes, open the bleed valve to release air from the system. This ensures better heat transfer efficiency.
5.2 The outer casing of the coil is made of sprayed plastic. Avoid cleaning it with solvents like thinner or gasoline, as this can damage the surface.
5.3 When starting the unit, begin with the high-speed setting and then adjust to other speeds as needed.
5.4 If operating conditions exceed those specified in the table, condensation may occur. In such cases, increase the water temperature or reduce the water flow rate.
**6. Maintenance**
6.1 Regularly clean the surface cooler and filters to ensure smooth airflow and efficient heat transfer.
6.2 If the unit malfunctions, always have it repaired by a qualified technician to avoid further damage.
Proper installation and consistent maintenance will significantly extend the life of your fan coil unit and improve its overall performance. Always refer to the manufacturer’s manual for specific details and follow all safety precautions.