Mercedes Mullins
When installing a diesel heater, there are several factors to consider when deciding where to mount the fuel tank. Some people choose to mount the tank inside the vehicle, often in the rear or under a seat, to keep the fuel warm and easily accessible for refuelling. However, this may raise concerns about flammables inside the car and potential damage to the tank by moving cargo. Others opt for mounting the tank outside, usually next to the vehicle's fuel tank, to avoid the risk of spills and diesel fumes inside the vehicle. This option offers convenience when refuelling at gas stations but may expose the tank to possible theft or vandalism. Additionally, considerations such as the length of the fuel pump power cord, the need for priming the fuel line, and the height of the tank in relation to the pump should be taken into account when deciding on the fuel tank's location.
Diesel Heater Fuel Tank Mounting Options
| Characteristics | Values |
|---|---|
| Inside the vehicle | Accessible through back doors, sliding doors, or behind passenger seats. |
| Outside the vehicle | Mounted next to the vehicle's fuel tank or on the exterior wall of the vehicle. |
| Under the vehicle | Mounted underneath the van or bus. |
| In a separate structure | Mounted in a wooden shed or an exterior storage bin. |
| Using the vehicle's fuel tank | Connected directly to the vehicle's fuel tank. |
| Using a jerry can | Mounted under a seat or bench inside the vehicle, with a separate jerry can for refuelling. |
| Using a bucket or spill-proof container | Mounted inside a bucket or other spill-proof container to minimise the risk of spills. |
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What You'll Learn
Mounting the fuel tank inside
When installing a diesel heater, it is important to consider the placement of the fuel tank. While some prefer to use their existing fuel tanks, others opt for separate fuel tanks specifically for their heaters. If you are considering mounting your fuel tank inside, there are several options and factors to consider.
Firstly, you need to choose a suitable location for the tank. Some popular choices include under the hood, inside, or underneath with a metal cage. If you opt for an inside location, you can consider placing it behind the passenger seat or under a bench seat. This keeps the tank out of the way while still being accessible for refuelling. Ensure that the tank is securely mounted and doesn't interfere with other components.
When installing the fuel pump, it should be mounted near the diesel heater, but no more than 2 metres away from the fuel tank. The pump should be installed at an incline, with the discharge end rising up at an angle of 15° to 35° above the inlet, pointing towards the heater. Additionally, the fuel lines and components must be kept away from heat sources, such as the engine compartment and vehicle exhaust piping.
It is also important to consider the refuelling process when mounting the tank inside. You may need to drill holes or create an access panel for refuelling, ensuring that you take precautions to avoid spills and fumes. Always refer to the manufacturer's instructions and seek professional advice if needed to ensure a safe and proper installation.
Overall, mounting the fuel tank inside can be a viable option, but careful planning and execution are necessary to ensure a safe and functional diesel heater system.
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Mounting the fuel tank outside
When mounting the tank outside, it is important to consider the following:
- Protection from the elements: Direct sunlight can damage the fuel tank and its contents. Consider installing the tank in a shaded area or providing a cover to minimise UV exposure. Additionally, if you live in a cold climate, be aware of the risk of fuel gelling in winter.
- Theft and vandalism: An external fuel tank is more susceptible to theft or vandalism. Consider installing a lock on the tank to deter thieves and prevent unauthorised access.
- Collision damage: Mount the tank in a location that minimises the risk of damage in the event of a collision. Ensure the tank is securely fastened to reduce the chances of it detaching from the vehicle.
- Spills and leaks: Use a spill-proof container or bucket to minimise the environmental impact and safety hazards associated with diesel spills.
- Refuelling process: Ensure the tank is easily accessible for refuelling. Consider the length of the fuel pump power cord and the proximity of the pump to the tank. You may need to extend the cord or reposition the pump for convenient refuelling.
When choosing a location for your external fuel tank, consider the overall design and functionality of your vehicle. Some popular options for mounting the tank outside include:
- Next to the vehicle's fuel tank: This allows for convenient refuelling at gas stations, as both tanks can be filled simultaneously.
- Under the vehicle: This option provides a discreet and relatively protected location for the tank. However, ensure that the tank is easily accessible for refuelling and that the mounting does not interfere with the vehicle's mobility or ground clearance.
- On an exterior wall: Mounting the tank on an exterior wall, such as behind the driver's seat, offers convenient access for refuelling and monitoring fuel levels. However, this location may increase the risk of collision damage and exposure to the elements.
Remember to refer to the manufacturer's instructions and seek professional advice when installing your diesel heater and fuel tank to ensure compliance with safety regulations.
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Using a jerry can
The jerry can fuel tank can be installed in campers, caravans, and motorhomes using existing jerry can holders. This option is convenient as it can be refilled outside the vehicle, reducing the risk of spilling fuel inside. It also allows for a full heater diesel tank and a full jerry can, preventing the heater from running out of fuel as quickly.
When installing a diesel heater, it is important to consider the placement of the fuel tank and fuel pump. The fuel pump should be mounted near the diesel heater, but no more than 2 meters away from the fuel tank. It should be installed at an incline, with the discharge end rising up at an angle of 15-35 degrees above the inlet. The fuel lines and components must be kept away from heat sources, such as vehicle exhaust piping and the engine compartment.
It is also recommended to install a CO detector near the diesel heater to ensure safety. Additionally, when refilling a jerry can, it is important to be careful not to spill any fuel, as diesel fuel can have a lingering smell. Overall, using a jerry can as a diesel heater fuel tank is a convenient and safe option for campers, caravans, and motorhomes.
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Drilling a hole in the side of the tank
Drilling a hole in a diesel fuel tank is possible, but it can be dangerous. It is important to take precautions to ensure safety. Some sources recommend drilling a hole in the side or bottom of the tank, while others suggest drilling through the top.
Before drilling, it is crucial to empty and remove the diesel tank. This will reduce the risk of any accidents. Additionally, it is recommended to flush the tank with water to minimise the risk of fire. One source mentions partially filling the tank with water as an extra precaution.
When drilling, it is important to use the correct tools and techniques. Some recommend using a hand drill with a drill bit that matches the size of the desired hole. It is also suggested to use a flexible wire, such as a wire coat hanger, to feed the nozzle through the tank from the cap opening to the drilled hole. Greasing the drill bit can help capture the swarf, or metal shavings, and minimise the amount that falls into the tank. This can be done by coating the drill bit and tap with grease. Alternatively, one source suggests using a pipe heated to a high temperature to melt the hole and then removing any remaining plastic with a Stanley knife.
After drilling, it is crucial to clean the tank thoroughly. This includes removing any swarf or debris from the drilling process. Compressed air can be used to blow out any remaining swarf. It is also important to ensure that the hole is properly sealed to prevent diesel vapours from escaping.
While drilling a hole in a diesel fuel tank can be done, it is important to approach this task with caution and to follow safety guidelines to minimise any potential risks.
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Using a fuel standpipe
When installing a diesel heater, one of the key considerations is the placement of the fuel tank. This involves deciding whether to mount the tank inside or outside the vehicle and choosing a location that is accessible for refuelling while also minimising the risk of damage or spills.
One option for mounting a diesel heater fuel tank is to use a fuel standpipe. The fuel standpipe is a part of the diesel heater that sucks fuel from the tank and supplies it to the heater, together with the fuel pump. It connects directly to the vehicle's fuel tank, making it a convenient choice. When using a fuel standpipe, it is important to consider the diameter of the standpipe to ensure it is compatible with the fuel pump. For example, the factory standpipe on some vehicles may have a wider diameter than what is suitable for the small pump of a diesel heater. In such cases, it is recommended to use a narrower standpipe or the fuel pickup line that came with the heater.
To install a fuel standpipe, you can follow these general steps:
- Identify a suitable location for the fuel standpipe, typically on the top of the fuel tank on an even surface.
- Drill a hole in the reinforced part of the tank, either on the side or bottom, for the fuel nozzle.
- Use a wire coat hanger or flexible wire to feed the nozzle through the tank from the cap opening to the drilled hole.
- Secure the nozzle with a washer and a nut, and then attach the fuel line.
- If using a white nylon fuel line, you may need to use a piece of rubber joint.
- Ensure that the fuel pump is mounted near the diesel heater but no more than 2 metres away from the fuel tank.
- Install the fuel pump at an incline, with the discharge end rising up at an angle of 15° to 35° above the inlet, pointing towards the heater.
- Cut the required lengths of fuel line for the different sections: from the fuel tank to the fuel filter, from the fuel filter to the fuel pump, and from the fuel pump to the diesel heater.
- Follow the instructions specific to your vehicle and heater model for any additional steps or considerations.
It is important to note that the above steps provide a general guide, and the specific installation process may vary depending on the vehicle and diesel heater model. Always refer to the manufacturer's instructions or seek professional installation services to ensure optimal performance and safety.
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Frequently asked questions
You can mount your diesel heater fuel tank inside your vehicle, outside your vehicle, or in a separate shed. If you choose to mount it inside your vehicle, you can place it behind a passenger seat, under a seat, or in the back. If you choose to mount it outside your vehicle, you can place it next to your vehicle's fuel tank. If you choose to mount it in a separate shed, you can place it next to the heater.
Mounting your diesel heater fuel tank inside your vehicle can help keep the fuel temperature up and prevent the fuel from freezing. It can also be more convenient for fueling, especially if you have a fill spout in a good location.
Mounting your diesel heater fuel tank outside your vehicle can make it easier to fill up at gas stations, as you can fill up your diesel heater fuel tank and your vehicle's fuel tank at the same time. It can also reduce the risk of fuel spills and fumes inside your vehicle.
Some considerations for mounting your diesel heater fuel tank include the accessibility for fueling, the distance from the fuel pump, and the potential for theft or vandalism if mounted outside the vehicle. You should also ensure that the fuel tank is mounted at an incline, with the discharge end rising above the inlet to allow air bubbles to escape.
