1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your RANZHIX Mini Tank Water Heater, Model XY-FC. This electric instant hot water heater system is designed to provide on-demand hot water for various applications in spaces with limited room.
Please read this manual thoroughly before installation and use, and retain it for future reference. Adherence to these instructions is crucial for optimal performance and user safety.
2. Safety Information
Important Safety Instructions:
- Always ensure the unit is properly grounded.
- Do not connect power until the tank and system are completely filled with water and checked for leaks.
- Open the hot water faucet until a constant flow is observed before connecting power to prevent damage to the heating element.
- This product supports vertical installation only.
- The unit is equipped with multiple protective measures: grounding setting, anti-dry burning, leakage protection, and overheating protection.
- The waterproof grade is IPX4.
- The operating temperature range is 68-122 °F (20-50 °C).
- Use a triangular socket for connection.
Failure to follow these safety guidelines may result in electric shock, fire, property damage, or personal injury.

Figure 1: Overview of safety features including grounding, dry burning protection, and IPX4 rating.
3. Product Specifications
The RANZHIX Mini Tank Water Heater (Model XY-FC) features robust construction and efficient performance. Key specifications are detailed below:

Figure 2: Product dimensions and technical specifications.
| Feature | Specification |
|---|---|
| Model | XY-FC |
| Power | 3000W |
| Voltage | AC 110V |
| Frequency | 50-60Hz |
| Waterproof Grade | IPX4 |
| Water Pressure | 0.04-1.2MPa |
| Temperature Range | 20-50 °C / 68-122 °F |
| Product Dimensions (L x W x H) | 11 x 7 x 20 cm (4.3 x 2.8 x 7.87 inches) |
| Tank Length | 16 cm (6.3 inches) |
| Power Cord Length | 1.05 m (3.44 ft) |
| Net Weight | 0.95 kg (2.1 lbs) |
| Water Inlet Method | Bottom Inlet |
| Mounting Type | Wall-mounted (vertical only), Floor standing, Under sink |
| Interface | Universal G1/2 inch |
| Recommended Minimum Reserved Installation Space | 30 x 30 x 25 cm (11.81 x 11.81 x 9.84 inches) |
Materials:
- Lining: 304 Stainless Steel (pressure resistant and explosion-proof)
- Heating Tube: 316L Stainless Steel (good thermal conductivity for accelerated heating)
- Shell: ABS (sturdy and durable)
- Interface: Brass (corrosion-resistant and wear-resistant)

Figure 3: High-quality materials used in the water heater construction.

Figure 4: Product identification label with model and electrical specifications.
4. Installation Instructions
The RANZHIX Mini Tank Water Heater is designed for wall-mounted, floor-standing, or under-sink installation. It must be installed vertically. Ensure you have the recommended minimum reserved installation space of 30 x 30 x 25 cm (11.81 x 11.81 x 9.84 inches).
- Prepare Mounting Location: Drill holes in the desired wall location according to the unit's mounting points. Insert the provided plastic expansion tubes into the drilled holes.
- Mount the Heater: Securely tighten the water heater to the wall using screws. Ensure the water heater is installed in a vertical orientation.
- Connect Water Pipes:
- Connect the cold water inlet pipe to the inlet nipple (bottom inlet).
- Connect the hot water outlet pipe to the outlet nipple.
- The inlet and outlet use universal G1/2 inch interfaces, compatible with various water pipes and faucets.
- Fill System and Check for Leaks: Before connecting the power supply, fill the water heater tank and the entire system with water. Carefully check all connections for any leaks.
- Purge Air from System: Open the hot water faucet connected to the unit until a constant stream of water flows from it. This ensures all air is purged from the system. Failure to purge air before connecting power may cause damage to the heating element.
- Connect Power: Once the system is filled with water and free of leaks and air, connect the power cord to a suitable triangular socket.

Figure 5: Universal G1/2-inch interface for easy connection.

Figure 6: Examples of suitable installation locations.
5. Operation
The RANZHIX Mini Tank Water Heater provides hot water within 3-5 seconds of activation. It features a touch button for control and a clear digital temperature display.
- Power On/Off: Press the touch button to turn the unit on or off.
- Temperature Adjustment:
- The unit can automatically adjust and recognize the most suitable constant temperature. To activate this feature, press and hold the power button for 6 seconds.
- The water temperature can also be controlled by adjusting the water flow:
- Large water flow: Results in lower water temperature.
- Small water flow: Results in higher water temperature.
- Temperature Display: The digital display shows the current water temperature. The operating temperature range is 68-122 °F (20-50 °C).

Figure 7: Temperature indication and adjustment methods.

Figure 8: The water heater providing hot water for kitchen use.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your water heater. Always disconnect power before performing any maintenance.
- Cleaning: Periodically wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Check for Leaks: Regularly inspect all water connections for any signs of leaks. Address any leaks immediately to prevent water damage.
- Sediment Flush (if applicable): While this is a tankless/mini-tank unit, if you notice reduced water flow or heating efficiency over time, it may indicate sediment buildup. Consult a qualified plumber for descaling or flushing procedures if necessary.
- Power Cord Inspection: Check the power cord for any damage, fraying, or loose connections.
7. Troubleshooting
If you encounter issues with your RANZHIX Mini Tank Water Heater, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Water not heating |
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| Water leaks |
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| Unit not turning on |
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| Temperature fluctuates |
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If the problem persists after attempting these solutions, please contact customer support.
8. Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official RANZHIX website. Please have your model number (XY-FC) and purchase date available when contacting support.
Manufacturer: RANZHIX
Model Number: XY-FC
UPC: 760385659827





