Benefits, tips and answers

General

Does the heat exchanger of a Truma liquid gas heater have to be replaced after a certain number of years?
No. Neither European directive 2006/119/EG nor international directive UN ECE R122 stipulate that the heat exchanger has to be replaced.
Is it possible to operate a Truma heater even whilst driving?

Yes. With Combi and Trumatic E heaters, the heating function can be used without a problem whilst driving.

In the case of Truma S / Trumatic S heaters, however, the heating function can only be used together with a cowl top, which must be installed freely in the air flow. Truma recommends cowl top T3 or cowl top T2. Otherwise, the flame may burn back and cause damage to the heater.
Additionally, the cowl top must protrude at least 10 cm beyond any additional roof accessories (roof boxes, ski racks, luggage racks, etc.) so that the heater can function without problems.
You can find out more about safe heating whilst on the move here.

Do Truma liquid gas heaters require servicing?
No. Truma gas heaters are maintenance-free. However, before colder seasons we recommend removing any dust from the heat exchanger and fan wheel blades (using a brush, vacuum cleaner, etc.), if the heater has a fan.
If your heater features an auto ignitor, we recommend replacing the batteries every two years or when the ignition frequency becomes slower. Make sure to use only leak-proof battery types.

Truma S

Have the dimensions of the S 3004 and S 5004 changed?

Yes, the dimensions have changed. The depth of the base is now lower.

Can the S 3004 / S 5004 be installed in the place of the S 3002 / S 5002. What needs to be taken into account in this case?

The new S-heater can be installed in the same position as the old one if the old unit is a S 3002 built after construction year 05/96 or a S 5002 built after construction year 05/98. The cut-out in the floor will need to be modified if the models are older.

Please note that the new cover of the control panel bracket is higher and in some cases the cupboard door may need to be modified. The contours and the depth of the base have changed slightly, this may mean that an imprint of the old base may still be visible on the floor.

Due to the lower installation cut-out, it is necessary to fit a strip to ensure that the S 5004 heater functions correctly when installed.

Always contact your nearest dealer when replacing units.

Can I reuse parts of the S 3002 / 5002 for the S 3004 / S 5004?

Due to the new operator-friendly design, almost all parts have been modified which means that the old parts cannot be used for the S 3004 and S 5004. Also, it is not possible to use the TEB-2 / TEN-2 / TN-2 fans for the S 3004 / S 5004.

Can I put the covers from the S 3004 / S 5004 onto the S 3002 / S 5002?

No, this is not possible or permitted because the dimensions and connections have been modified.

Can the warm air parts and cowls still be used?

Yes, the warm air parts and cowls (apart from the cowl top T1) can still be used.

Trumatic S

What is the correct way to install the exhaust duct, and what do you need to bear in mind when it comes to exhaust ducting?
Exhaust ducts must always be installed so that they are rising up to the cowl. If the exhaust emissions from your Trumatic S are still being conveyed via an aluminium duct, it is essential that you replace this with a stainless steel duct.
If you remove the cover from your heater, you will see a short piece of exhaust duct. If the exhaust duct has a winding, it is made from stainless steel. If it does not have a winding - only small grooves - this means it is an aluminium duct and needs to be replaced. Please note that the duct may only be replaced by a specialist (such as a Truma service technician).
What is the cause of a temperature increase in the wardrobe?
High temperatures may be caused by a warm air distribution system that has not been installed to maximum effect, insufficient ventilation in the wardrobe, or closed warm air lines, among other things. They could also be the result of a heater that does not feature a fan.
Whatever the case, however, increased temperatures in the wardrobe and at the exhaust duct do not pose a risk of fire.
What do I need to check if there is a drop in the air output of the Trumatic S fan?
We recommend cleaning the fan wheel from time to time. Use either a brush with stiff bristles or compressed air to clean the blades. To prevent the warm air ducts and vehicle getting dirty, you should remove the fan in order to clean it. Spraying the fan wheel with cockpit spray following this will increase the cleaning intervals required.

Combi-Modelle

Combi models: Is it possible to completely close a warm air outlet or warm air line in the case of the Combi (E)?
Warm air outlets or warm air lines must not be closed under any circumstances with the Combi 6 (E), to prevent heat accumulation.
With the Combi 4 (E), no more than one warm air outlet or warm air line may be closed completely. However, in all cases it is better to use all four warm air outlets.
Individual outlets in the same duct may only be closed if T or Y-pieces are being used and the heat is being conveyed to another warm air outlet that is open.
How long does it take for water to heat up in the Combi?
If only water is being heated up (during summer operation), a temperature of 60 degrees is reached after around 20 minutes.
If the living area is being heated and the boiler is being operated (during winter operation), a water temperature of 60 degrees is reached after around 80 minutes.
It is possible to heat up the water in electrical operation alone (i.e. entirely without gas). The heating time in electrical operation is around 45 minutes.
In summer, is it possible to just heat up water without heating up the living area too?
Yes - simply set the switch to summer operation and select a water temperature of 40 or 60 degrees. When the yellow LED on the control panel goes out, this means the desired water temperature has been reached.
The heater only heats the boiler (in summer operation, at a 2 kW level only); the circulation fan does not run.
Is it possible to use the Combi heating function without water?
Of course. The Combi water tank can be heated up even without water.
Why does the D.C. motor continue to run after the heater has been switched off?
This function protects the device against the possibility of overheating, which may occur as a result of heat accumulation. While it is running after the heater has been switched off, the D.C. motor emits any heat that may have been accumulated into the interior of the vehicle. Remember that it will continue to run each time the heater is switched off - even if the heater has only been used for a very short time. It’s also important to remember that you cannot deactivate this function.
Does my Combi water tank need to be descaled or sterilised?

The water tank should be descaled from time to time.
Citric acid must be used for this purpose. This can be fed into the device via the water inlet. Leave it time to take effect and then rinse out the Combi thoroughly with fresh water.

Please do not use the water from the Combi as drinking water.

Is it possible to retrofit both heating elements in a standard version of the Combi 4/6?
No. The heating elements are permanently integrated into the Combi heat exchanger. Heat exchangers are not designed for heating element retrofitting.

Trumatic C

Is it possible to completely close a warm air outlet or warm air line in the case of the Trumatic C?
Warm air outlets or warm air lines must not be closed completely under any circumstances with the Trumatic C 6002.
With the Trumatic C 3402, no more than one warm air outlet or warm air line may be closed completely. However, in all cases it is better to use all four warm air outlets.
Individual outlets in the same duct may only be closed if T or Y-pieces are being used and the heat is being conveyed to another warm air outlet that is open
How long does it take for water to heat up in the Trumatic C?
If only water is being heated up (during summer operation), a temperature of 70 degrees is reached after around 35 minutes.
If the living area is being heated and the boiler is being operated (during winter operation), a water temperature of 70 degrees is reached after around 80 minutes.
To enable the water to heat up faster, we recommend using our electric heating collar too. This requires a 230 V power supply and has a heat output of 450 W. It also enables the water to be heated up entirely electrically (i.e. without using gas at all).
In summer, can the Trumatic C be used to just heat up water without heating up the living area too?
Yes - set the switch to summer operation and select a water temperature of 40 or 60 degrees. When the orange lamp on the control panel goes out, this means the desired water temperature has been reached.
The heater only heats the boiler (in summer operation, at a 2 kW level only); the circulation fan does not run.
Is it possible to use the Trumatic C heating function without water?
Of course. The C heating water tank can be heated up even without water.
Why does my water heat up even though I only have the heating setting activated on the control panel?
If the boiler has been filled, the “heating without controlled water temperature” setting on the control panel automatically heats up the water too when it is activated. In this case, the water temperature is dependent on the heat output and length of time it takes for the heating function to reach the desired room temperature.
Can I connect the new control panel (05/02 or later) to my “old” Trumatic C?
Yes, although this is only possible with Trumatic C series 2 (06/97 or later).
The new control panel has a modern design and features an additional function. It has a switch setting that is designed for operating the heating function without the boiler having been filled.
This means that the water is automatically heated up too when the boiler is filled. In this case, the water temperature is dependent on the heat output and length of time it takes for the device to heat up the room. This function allows you to have heated water but only consume a small amount of gas.
If you upgrade to the new control panel, you will also need a remote sensor (available from your dealer).
Why does the D.C. motor continue to run after the heater has been switched off?
This function protects the device against the possibility of overheating, which may occur as a result of heat accumulation. While it is running after the heater has been switched off, the D.C. motor emits any heat that may have been accumulated into the interior of the vehicle. Remember that it will continue to run each time the heater is switched off - even if the heater has only been used for a very short time. It is also important to remember that you cannot deactivate this function.
Does my Trumatic C water tank need to be descaled or sterilised?

The water tank should be descaled from time to time.
Citric acid must be used for this purpose. This can be fed into the device via the water inlet. Allow it to take effect for the appropriate amount of time and then rinse the tank out thoroughly with fresh water.

Please do not use the water from the Trumatic C as drinking water.

Trumatic C 6002 EH

Is it possible to retrofit the heating collar in the case of the Trumatic C 6002 EH?
No. Approval has not been obtained for this, since the heating elements (1800 W) provide sufficient electrical heat output for warming up the water.
Is it possible to retrofit both Trumatic C 6002 EH heating elements in a standard version of the Trumatic C 6002?
No. The heating elements are permanently integrated into the Trumatic C 6002 EH heat exchanger. The Trumatic C 6002 heat exchanger is not designed for heating element retrofitting.
Can the Trumatic C 6002 EH be operated without water?
Yes. Operation without water is possible without restrictions in this case, just as with all versions of Trumatic C heaters.

Trumatic C 4002

Is it possible to retrofit both Trumatic C 6002 EH heating elements in a standard version of the Trumatic C 4002?
No. The heating elements are permanently integrated into the Trumatic C 6002 EH heat exchanger. The Trumatic C 4002 heat exchanger is not designed for heating element retrofitting.
What is the difference between the Trumatic C 3402 and Trumatic C 4002?
The Trumatic C 4002 provides over 600 watts more heat output and is equipped with a more powerful D.C. motor for distributing the warm air.
How many warm air outlets need to be used out of the four that are provided?
At least three of the outlets need to be connected to the warm air distribution system in order to protect the device against overheating. To achieve optimum and efficient distribution of the warm air, however, all 4 outlets should be connected.
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