LF Bros 5 kW Split Diesel Heater User Manual

Introduction

The LF Bros 5 kW Split Diesel Heater is designed to provide efficient and consistent heating for various applications, including cars, SUVs, RVs, and outdoor tents. This 12V diesel air heater comes with a 10L fuel tank, a T3 LCD controller, and a remote control, offering versatile and user-friendly operation.

It delivers heating power ranging from 4700 to 17000 BTU, with a fuel consumption of 0.18-0.53 L/h, and operates effectively in temperatures from -40°C to 40°C. Constructed with a weighted aluminum body and a ceramic glow plug, it ensures rapid heat conduction and efficient combustion.

Image: The LF Bros 5 kW Split Diesel Heater, showcasing the main unit, the T3 LCD controller, and the wireless remote control. The heater features a compact design suitable for various installations.

Safety Information

Always read and understand all safety warnings and instructions before installing or operating the heater. Failure to follow these instructions may result in fire, explosion, electric shock, or other injuries.

• The heater is equipped with multiple safety features, including protection against overheating, short circuits, overcurrent, overvoltage, and reverse connections.
• Ensure proper ventilation during operation to prevent carbon monoxide buildup.
• Do not operate the heater in enclosed spaces without adequate airflow.
• Keep flammable materials at a safe distance from the heater and its exhaust.
• Ensure all electrical connections are secure and correctly wired to prevent short circuits or fire hazards.
• Only use diesel fuel as specified for this heater. Do not use gasoline or other volatile fuels.
• Regularly inspect the heater for any signs of damage, leaks, or wear.
• Installation should be performed by a qualified individual if you are unsure about any steps.

Product Components

The LF Bros Split Diesel Heater package includes the following main components and accessories:

Image: A comprehensive layout of all components included in the LF Bros Split Diesel Heater package, such as the main heater unit, LCD switch, remote controller, oil pump, silencer, fuel tank, wire harness, exhaust pipe, tubing, wind head, air filter, oil filter, rubber pad, fixed plate, oil pump clamp, tee connector, screw accessory kit, and user manual.

• Diesel Heater Main Unit
• T3 LCD Controller
• Remote Control
• 10L Fuel Tank
• Fuel Pump
• Silencer
• Wire Harness
• Exhaust Pipe
• Tubing (for fuel and air)
• 75mm Wind Head
• Air Filter
• Oil Filter
• Rubber Pad
• Fixed Plate
• Oil Pump Clamp
• Tee Connector
• Screw Accessory Kit
• User Manual

Setup and Installation

Proper installation is crucial for the safe and efficient operation of your diesel heater. This section provides general guidelines. Refer to the included detailed manual for specific diagrams and step-by-step instructions.

1. Choose a Mounting Location: Select a dry, stable, and well-ventilated location for the main heater unit and fuel tank. Ensure there is sufficient space for air intake and exhaust, and that the exhaust can be safely routed outside.
2. Mount the Heater Unit: Securely attach the main heater unit using the provided fixed plate and screws. Ensure it is level and stable.
3. Install Fuel System:
   • Mount the 10L fuel tank in a secure location.
   • Connect the fuel pump to the fuel tank and the heater unit using the provided fuel tubing and clamps. Ensure all connections are tight to prevent leaks.
   • Install the oil filter in the fuel line as directed.
4. Connect Electrical Wiring:
   • Connect the main power wire harness to a 12V DC power source, ensuring correct polarity. The heater requires a stable power supply.
   • Connect the T3 LCD controller and the fuel pump to the main wire harness.
   • Ensure all electrical connections are insulated and protected from moisture.
5. Install Exhaust System:
   • Attach the exhaust pipe to the heater unit and route it safely to the exterior of the vehicle or structure.
   • Install the silencer in the exhaust line to reduce noise.
   • Ensure the exhaust pipe is clear of any flammable materials and is not obstructed.
6. Install Air Intake: Connect the air intake tubing and air filter to the heater unit. Ensure the air intake is clear and not drawing in exhaust fumes.
7. Final Checks: Before first use, double-check all connections (fuel, electrical, exhaust, air) for security and proper routing. Fill the fuel tank with clean diesel fuel.

Image: An LF Bros 12V 5kW Diesel Air Heater shown in front of an RV covered in snow, illustrating its primary application for providing warmth in cold environments. Arrows indicate the flow of warm air into the vehicle.

Operating Instructions

The LF Bros diesel heater offers flexible control via its T3 LCD controller and remote control.

Priming the Fuel System

Before initial operation or after running out of fuel, the fuel system must be primed to ensure proper fuel delivery to the heater. This is typically done via a "POLR" or "Fuel Pump" function on the LCD controller. Consult your specific manual for the exact steps to activate the priming function.

Using the T3 LCD Controller

The T3 LCD controller provides real-time operational status and allows for detailed settings adjustments.

• Power On/Off: Use the designated button on the controller to turn the heater on or off.
• Temperature/Power Adjustment: Adjust the desired heating level using the up/down buttons. The display will show the current settings.
• 24-Hour Timer Function: Set specific start and stop times for the heater to operate automatically. This supports both single-period and multi-period timing modes for energy saving.
• Real-time Status Display: The LCD screen displays current temperature, power output, voltage, and error codes.

Image: A person sleeping comfortably, illustrating the benefit of the 24-hour timer function of the LF Bros T3 LCD controller. The controller display shows timing settings, emphasizing energy conservation and scheduled warmth.

Heating Modes

The heater supports two primary heating modes selectable via the LCD controller:

• Power Mode: The heater maintains a continuously regulated power output.
• Variable Frequency Mode: The heater adjusts its power output within a range (e.g., 1.4 kW to 5 kW). In this mode, the fan speed may decrease, leading to less heat output at lower settings.

Using the Remote Control

The remote control allows you to turn the heater on or off and adjust settings from a distance, up to 30 meters (100 feet), providing convenience, especially in cold conditions.

• Power On/Off: Use the ON/OFF buttons to activate or deactivate the heater remotely.
• Temperature/Power Adjustment: Use the +/- buttons to increase or decrease the heating level.

Image: A visual comparison showing a person shivering in a cold car before using the heater, and then comfortable after. The image highlights the convenience of the remote control, allowing users to pre-heat their vehicle from up to 30 meters away.

Maintenance

Regular maintenance ensures the longevity and optimal performance of your LF Bros diesel heater.

• Cleaning: Periodically clean the exterior of the heater. Ensure air intake and exhaust vents are free from dust, debris, or obstructions.
• Fuel Filter Check: Inspect the fuel filter regularly and replace it if it appears clogged or dirty to ensure proper fuel flow.
• Air Filter Check: Clean or replace the air filter as needed to maintain efficient combustion and prevent dust from entering the system.
• Electrical Connections: Check all electrical connections for tightness and signs of corrosion.
• Exhaust System: Inspect the exhaust pipe for any damage, leaks, or blockages. Ensure it is securely fastened.
• Glow Plug: While designed for durability, if starting issues occur, the ceramic glow plug may need inspection or replacement by a qualified technician.

Troubleshooting

This section addresses common issues you might encounter with your diesel heater. For more complex problems, contact customer support.

Specifications

Image: The LF Bros diesel heater unit displayed alongside various vehicles and settings, including cars, SUVs, pickup trucks, yachts, RVs, and outdoor tents, illustrating its wide range of applicable uses.

Warranty and Support

For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official LF Bros website. Warranty coverage typically includes defects in materials and workmanship under normal use.

If you encounter any issues not covered in the troubleshooting section or require technical assistance, please contact LF Bros customer support. Contact information can usually be found on the product packaging, the official website, or within the detailed user manual provided in the box.

Note: Keep your purchase receipt as proof of purchase for warranty claims.