9 L CombiBOIL Autoterm Water Heater:

In collaboration with Tigerexped, AUTOTERM has designed a new solution to heat your domestic water. This water heater integrates with all AUTOTERM forced-air or water heating systems. It can be easily installed, even if your heating system is already in place. The AUTOTERM water heater is equipped with: - Integrated coolant heat exchanger; - Rotatable metal casing for versatile installations. Whether you are setting off on a road trip or sailing on the high seas, the AUTOTERM water heater guarantees a constant supply of hot water. With a 9-liter water heater, you can enjoy pleasant hot showers for 3 people consecutively. Note: This water heater can be powered by a pump up to 2.8 bar. How does it work?

Compatible with the Autoterm AIR series the water is heated by the hot air passing through the water heater


Compatible with the Autoterm FLOW series
the water is heated by the coolant circulating in the water heater



Operates independently
this water heater can operate autonomously, powered by electricity

Technical specifications of the Autoterm boiler Voltage/power 12 V 300 W, 24 V 600 W, 120 V 500 W, 230 V 500 W Maximum pressure 3 bars Time to heat water from 20°C to 60°C approximately 60 minutes Compatible control panel Comfort boiler control Air connection diameter 90 mm Materials Made of 316L stainless steel Water heater dimensions 484 x 270 x 272 mm Water heater weight 10.39 kg Package dimensions 58 x 36.50 x 36.50 cm Warranty 2 years against manufacturing defects. Link: warranty information

Water heater features with the Comfort boiler control

The main features of the AUTOTERM Comfort Boiler Control are as follows: - Real-time water temperature display; - The target water temperature is adjustable from 50 to 80 °C; - The water heating hysteresis is adjustable from 5 to 25 °C relative to the target temperature.

The safety devices include: - Turning off the heating when the water temperature reaches 85°C; - Frost protection - When the water temperature drops to 2°C, the heating automatically heats the water to +15°C and air to +7°C, protecting the water heater from freezing.

NOTE: The Comfort Control and Comfort Boiler Control panels differ in hardware and software. The standard Comfort Control cannot be upgraded to the water heater monitoring functions.

Recommendations for a smooth user experience  

Water pump
Ensures water circulation. If you already have a pressurized water pump in your vehicle, you do not need to replace it to use it with the boiler system.

Pressure valve
Eliminates the risks of an overpressurized domestic water system, which could cause leaks.

Thermostatic mixer
Mixes hot and cold water to ensure an optimal temperature and increase the volume of hot water.

This boiler is available in 7 litre, 9 litre, and 12 litre versions, ensuring the perfect capacity for different requirements.

12/24V (DC/Direct Current): Due to space constraints, no thermostat or safety shut-off function is integrated into the heating element! Shut-off at the desired target temperature or in case of overheating MUST be implemented externally. (For example: with an external thermostat module).

Certificates and manuals

FAQ: 

What should I consider if I select a boiler without the Comfort Boiler Control panel? Should I expect restrictions due to not using the control panel? 


Without the control panel, there is no display of the boiler water temperature. It is not possible to regulate the boiler temperature via the heating. No antifreeze function via the heating. No overheating protection when operating via the heating.



How long does it take for the combiBOIL to heat the water? (With air heating / electric / via engine cooling circuit / the water heater) 


Regardless of the air heater used with combiBOIL, it takes about 60 minutes to heat the water from 20°C to 60°C. This corresponds to a power of about 500W for 12l, 400W for 9l, and 300W for 7l. For the heating elements, the time depends on the power of the heating element: 12 V/300 W: about 66 minutes for 7 L, 84 minutes for 9 L, and 112 minutes for 12 L. 24 V/600 W: about 33 minutes for 7 L, 42 minutes for 9 L, and 56 minutes for 12 L. 230 V/500 W about 40 minutes for 7 L, 51 minutes for 9 L, and 67 minutes for 12 L. When operating via the engine cooling circuit coolant, the preheating time is about 34 minutes if the temperature is approx. When integrating the cooling circuit, it is essential to include a premixer or a thermal valve.



In what position can and should the combiBOIL be installed?


The cold water connection must always be at the bottom and the hot water connection always at the top. Since the combiBOIL bracket is rotatable, wall, ceiling, and floor mounting are possible.



What size boiler do I need? How much hot water can I get with the combiBOIL 7l/9l/12l? 


As a general rule, with a shower temperature of 30°C, you can expect about twice as much ready-to-use water compared to the water heater's capacity. Basically, the amount of water available for the shower, for example, depends on the boiler water temperature and the coldness of the cold water added. This results in an amount of water based on the desired shower temperature.

What is the minimum and maximum distance between the heater and the boiler? 

This is more important than maintaining certain distances: the closer the two components are, the more important it is to protect the water from overheating and to use the corresponding mode on the boiler control panel. The further apart they are, the longer the heating time will be, but the risk of overheating will also decrease. 



If there is no water in the combiBOIL, can hot heating air circulate? 

Yes. An auxiliary air heater and a second water circuit can also be used and connected when the boiler is "dry". However, combiBOIL must never be electrically heated if it does not contain water.

 



What happens if you do not use a second heating loop in the combiBoil? 


If you do not want to integrate the engine cooling circuit into the system, nor install underfloor heating or a towel dryer, the connections of the second heating loop can simply remain open. The heating coil is not connected to the domestic water, so no water leakage can escape from it.


How to create a towel dryer? 


The boiler's inlet and outlet for the second water loop must not be occupied by the connection to the engine cooling circuit. To operate the towel dryer, you connect suitable piping, as well as a thermal valve and an expansion vessel. Circulation is by gravity. Warning: The towel dryer must not have a power greater than what the radiator/heating element allows to circulate in the boiler.

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