1. Introduction
This manual provides essential information for the safe and efficient operation of your FVSTR 12L Tankless LPG Instant Hot Water Heater. This appliance is designed to provide instant and continuous hot water using Liquid Petroleum Gas (LPG) as its energy source. It features a flue type design and is suitable for various applications, including home use, outdoor showering, camping, RV travel, and pet washing.
Please read this manual thoroughly before installation and use, and keep it for future reference. Proper installation, operation, and maintenance are crucial for your safety and the longevity of the product.
2. Safety Information
Your safety is paramount. This water heater is equipped with multiple safety features. Always adhere to the following guidelines:
- **Ventilation:** Ensure the appliance is used in a well-ventilated area to prevent the accumulation of toxic gases.
- **Gas Supply:** Use only LPG (Liquid Petroleum Gas) as the energy source. Ensure all gas connections are secure and leak-free.
- **Over-Temperature Protection:** The unit will automatically shut off if the water temperature exceeds 75 °C (167 °F).
- **Low Water Flow Protection:** The heater will not operate if water flow is insufficient, preventing dry burning.
- **Anti-Frozen Protection:** Take precautions in freezing temperatures to prevent water lines from freezing and damaging the unit.
- **Over Water Pressure Protection:** Designed to handle normal operating pressures; avoid excessive water pressure.
- **No Flame Protection:** The unit will shut off if the flame extinguishes unexpectedly.
- **20-Minute Timer:** For added safety, the heater includes a 20-minute automatic shut-off timer.
- **Professional Installation:** Installation of gas appliances should ideally be performed by a qualified professional to ensure compliance with local codes and safety standards.
3. Product Overview
Components and Controls
The FVSTR 12L water heater features a durable stainless steel case and internal copper components for longevity and efficient heat transfer. Key components and controls include:
- Stainless Steel Casing: Provides durability and corrosion resistance.
- Copper Water Tank: Ensures efficient heating and long lifespan.
- Gas Inlet: Connection point for the LPG supply.
- Cold Water Inlet: Connection point for the incoming cold water supply.
- Hot Water Outlet: Delivers heated water to your fixtures.
- LED Display Screen: Shows the real-time water temperature.
- Gas Regulator Knob: Adjusts the gas supply to control heating intensity.
- Water Regulator Knob: Controls the water flow rate.
- Summer/Winter Mode Switch: Allows selection between low-level (Summer) and high-level (Winter) fire power to optimize gas consumption based on ambient temperature.
- Battery Compartment: Houses two 'D' cell batteries for ignition.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | K12JT |
| Brand Name | FVSTR |
| Power (KW) | 24 KW |
| Hot Water Output | 12 L/min (3.2 GPM) |
| Gas Supply Type | LPG (Liquid Petroleum Gas) |
| Water Temperature Range | 50 °F - 140 °F (10 °C - 60 °C) |
| Thermal Efficiency | ≥80.8% |
| Low Water Pressure Start | 0.015 MPA |
| Normal Working Pressure | 0.02 MPA - 0.8 MPA |
| Ignition Voltage | 3V (2 x 'D' Cell Batteries) |
| Smoke Extraction Method | Flue Type |
| Dimensions (H x W x D) | 24.8" x 13.8" x 5.9" (63 cm x 35 cm x 15 cm) |
| Water Connection Size | G1/2" |
| Gas Regulator Connector Size | 5/8" |
5. Setup and Installation
The FVSTR 12L water heater is designed for wall-mounting and can be installed in various locations such as a kitchen, outdoor shed, or outside an RV. Always ensure the installation area is well-ventilated and protected from direct weather exposure if installed outdoors.
Included Accessories:
- Shower head kit with hose
- Portable gas regulator with hose (5/8" connector)
- Water filtration device
- Mounting hardware (screws, anchors)
- User manual (this document)
Installation Steps:
- Mounting: Securely mount the water heater to a sturdy wall or suitable surface using the provided mounting hardware. Ensure it is level and stable.
- Battery Installation: Open the battery compartment (located at the bottom of the unit) and insert two 'D' cell batteries. These are required for ignition.
- Gas Connection: Connect the portable gas regulator and hose to your LPG tank and then to the gas inlet on the water heater (G1/2" connection). Ensure all connections are tight and check for gas leaks using a soapy water solution.
- Water Connections:
- Connect the cold water supply line to the 'Cold Water In' port (G1/2").
- Connect the shower hose or other hot water outlet to the 'Hot Water Out' port (G1/2").
- Install the water filtration device on the cold water inlet line if desired, to ensure clean water supply.
- Ventilation: Verify that the flue type exhaust is properly installed and vented to the outside, away from any openings or combustible materials.
- Initial Check: Before first use, double-check all connections for leaks (gas and water) and ensure proper ventilation.
6. Operating Instructions
Follow these steps to operate your FVSTR 12L Tankless LPG Instant Hot Water Heater:
- Open Gas Supply: Ensure your LPG tank valve is open and the gas regulator is properly connected.
- Open Water Supply: Turn on the cold water supply to the unit. The water heater requires a minimum water pressure of 0.015 MPA to activate.
- Set Water Flow: Adjust the 'Water Regulator Knob' to your desired water flow rate.
- Set Gas Flow/Temperature: Adjust the 'Gas Regulator Knob' to control the heating intensity. The LED display will show the current water temperature. Rotate clockwise for higher temperature.
- Select Season Mode: Use the 'Summer/Winter Mode Switch' to optimize gas usage:
- Summer Mode: Activates low-level fire power, suitable for warmer ambient temperatures, saving gas.
- Winter Mode: Activates high-level fire power, suitable for colder ambient temperatures, ensuring sufficient hot water.
- Ignition: Once water flow is detected and gas is supplied, the unit will automatically ignite. You should hear a clicking sound followed by the burner igniting.
- Enjoy Hot Water: Hot water will flow from the outlet. You can fine-tune the temperature using the gas and water regulator knobs.
- Shut Down: To turn off the unit, simply close the hot water faucet. The unit will automatically extinguish. For extended periods of non-use, close the LPG tank valve and turn off the water supply.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your water heater.
- Clean Exterior: Wipe the stainless steel casing with a soft, damp cloth. Do not use abrasive cleaners.
- Check Gas Connections: Periodically inspect gas connections for any signs of wear or leaks. Re-tighten if necessary.
- Inspect Water Filter: If you installed the water filtration device, check and clean or replace the filter cartridge as needed to maintain good water flow.
- Flue Inspection: Ensure the flue is clear of obstructions and properly vented.
- Battery Replacement: Replace the 'D' cell batteries when the ignition becomes weak or fails.
- Winterization (if applicable): If using in an area prone to freezing, drain the water heater and all water lines to prevent damage from freezing.
8. Troubleshooting
If you encounter issues with your water heater, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Unit not igniting | No gas supply, low water pressure, dead batteries, gas regulator issue. | Check LPG tank, ensure sufficient water flow, replace 'D' cell batteries, check gas regulator connection. |
| Water not hot enough | Gas flow too low, water flow too high, incorrect season mode. | Increase gas flow with knob, decrease water flow with knob, switch to Winter Mode if ambient temperature is cold. |
| Unit shuts off unexpectedly | Over-temperature, low water flow, flame out, 20-minute timer. | Check water flow, ensure proper ventilation, restart unit. If persistent, contact support. |
| Gas smell | Gas leak. | Immediately turn off gas supply. Ventilate the area. Do NOT ignite any flames. Check all gas connections with soapy water. If leak persists, evacuate and contact emergency services/qualified technician. |
| Water leakage | Loose water connections, damaged hose/unit. | Turn off water supply. Check and tighten all water connections. Inspect hoses for damage. If unit is leaking, contact support. |
9. User Tips
- For optimal performance and gas savings, always select the appropriate Summer or Winter mode based on the ambient temperature.
- Ensure a consistent water supply and adequate water pressure for continuous hot water.
- When using outdoors, position the unit in a sheltered area to protect it from wind, which can affect burner efficiency.
- Always have spare 'D' cell batteries on hand for uninterrupted use.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original seller or the manufacturer directly. Keep your purchase receipt as proof of purchase.