10 Liter PV Caravan Boiler

479,00 

incl. 19% VAT

10 liters – Photovoltaic caravan boiler

Description

A hot shower in the caravan. At any time in any place. Enjoy more independence, more freedom and more comfort!

The photovoltaic caravan boiler offers the ideal solution for a reliable and sustainable way to heat hot water in the caravan. Once installed, the boiler produces free hot water for years. Just by the power of the sun. 

The 10 liter Caravan Boiler is ideal for motorhomes, caravans or self-built campers. Just everywhere where hot water is needed in mobile applications.  

Product highlights

More freedom

A hot shower after an eventful day of hiking or sightseeing in the city makes traveling much more pleasant. The photovoltaic boiler warms up during the day so that a hot shower can be enjoyed immediately after returning to the caravan. 

More independence

The photovoltaic boiler is powered exclusively by electricity. This electricity comes either directly from the photovoltaic module or from a battery. The annual gas inspection, the regular purchase of new gas bottles or the refueling of diesel for hot water production are now a thing of the past. The photovoltaic boiler produces hot water free of charge, climate neutral and independent of fossil fuels.

Renewable hot water production

Use photovoltaic power

Direct connection of up to 1500Wp photovoltaic power.

Intelligent battery operation

Use of excess energy from a 12V or 24V battery to heat the water. 

Energy supply - photovoltaic module or battery?

Both is possible!
Both a 12V or 24V battery and one or more photovoltaic modules can be connected to the photovoltaic boiler. To put the boiler into operation, only the power cable of the boiler must be connected to the energy source.

Overview of possible energy sources:

Energy sources

Voltage

Type

PV module

battery

0 V – 42.4 V

12 V, 24 V

Lead battery, LiFePo4

Heating times depending on the energy source:

Energy sources

Power

Temperature rise per hour

PV module

100 W

300 W

550 W

9 °C/h

27 °C/h

47 °C/h

battery

12 V (ca. 90 W)

24 V (ca. 350 W)

8 °C/h

32 °C/h

Connect photovoltaic module directly to the boiler:
Up to 1500 Wp of photovoltaic power can be connected to the boiler. The MPP tracker already integrated in the boiler ensures that as much energy as possible from the sun is converted into heat in the boiler. To put the boiler into operation, only the photovoltaic modules have to be connected to the boiler. No further devices such as charge controllers, MPP trackers, inverters or anything else are required. 

Dimensioning of the photovoltaic module power:
A photovoltaic power of at least 200 W is recommended for reasonable operation of the caravan boiler. Under ideal weather conditions, the boiler would be heated from 15°C to 65°C within about 3 hours. 
For a heating process from 15°C to 65°C water temperature about 580Wh energy is needed. 

Note:
All photovoltaic modules with an open circuit voltage Uoc of less than 42.4 V can be connected to the photovoltaic boiler. These are usually all 60 or 120 cell photovoltaic modules. 

In the caravan sector, photovoltaic modules with a voltage of 18V – 22V are usually used.These are usually photovoltaic modules with power between 100W and 200W and 36 cells. These modules are ideal for connection to the caravan boiler. 

Use energy surpluses of the battery:
If the boiler is connected to a battery, you can choose between two modes:

Use surplus energy:
The boiler will automatically turn on only when connected battery is fully charged.

Surplus energy + reheating:
In the second mode, the boiler can also be reheated via the battery if the water should ever become too cold. The battery is discharged in the process. From about 50% residual capacity of the battery, the heating process is automatically terminated so that there is still enough energy available for light, refrigerator or cell phone charging.

Use surplus energy:
The boiler will automatically turn on only when connected battery is fully charged.

Surplus energy + reheating:
In the second mode, the boiler can also be reheated via the battery if the water should ever become too cold. The battery is discharged in the process. From about 50% residual capacity of the battery, the heating process is automatically terminated so that there is still enough energy available for light, refrigerator or cell phone charging.

Heating the boiler with a 12V or 24V battery

The photovoltaic caravan boiler can be connected directly to a 12V or 24V battery. Depending on the voltage of the battery, the appropriate mode must be selected on the boiler. A list of all modes can be found below.

Energy source

Description

Mode 1

Photovoltaic module or external energy management system

Energy source: photovoltaic module or external energy management system

Standard photovoltaic operation:

The water in the photovoltaic boiler is heated by directly connected photovoltaic modules.

In addition, a power supply unit (see online store) can be connected to the boiler to automatically reheat the water on days with low solar radiation.

External energy management:
Mode 1 can also be selected if the battery connected to the boiler has energy management. In this mode, the boiler is always activated and uses all the energy provided to it by the energy management.

Example:
The energy management of the battery activates an electrical output when the charge level reaches 80%. As soon as the electrical output is activated, the boiler uses all the energy until the electrical output is switched off again via the energy management system.

Notes for external energy management:
The nominal voltage of the battery should be 12V or 24V.
Maximum heating power for 12V batteries: 90W.
Maximum heating power with 24V batteries: 350W.

Mode 2

12V Battery

Power source: 12V battery

12V excess energy use

In mode 2, the battery is charged first. As soon as it is fully charged, the photovoltaic boiler uses the surplus energy to heat the water. The boiler switches on automatically when the battery voltage reaches 13.5V and stops heating when the voltage drops below 13.5V.

Notice:
Maximum heating power of the boiler: 90W
Approved battery types: LiFePO4, lead acid

Mode 3

12V Battery

Power source: 12V battery

12V reheating from the battery

In mode 3, the boiler can be reheated via the battery. In this case, the battery is discharged.
If the temperature of the water falls below a minimum water temperature set on the boiler (e.g. 30°C), the boiler uses the energy from the battery to heat up the water.

However, the battery is only discharged to a residual capacity of 50% to ensure that other electrical consumers such as lamps or a refrigerator continue to be supplied with sufficient power. The boiler stops the reheating process when a battery voltage of 12.4V is reached.

If, on the other hand, the water temperature in the boiler is higher than the set minimum water temperature, the battery is not discharged. In this case, the boiler would act as in mode 2 and only start the heating process when the boiler is fully charged.

Notice:
Maximum heating power of the boiler: 90W
Approved battery types: LiFePO4

Mode 4

24V Battery

Power source: 24V battery

24V Use of surplus energy:

In mode 4, the battery is charged first. Once it is fully charged, the photovoltaic boiler uses the excess energy to heat the water. The boiler automatically turns on when the battery voltage reaches 27.0V and stops heating when the voltage drops below 27.0V.

Notice:
Maximum heating power of the boiler: 350W.
Approved battery types: LiFePO4, lead acid battery

Mode 5

24V Battery

Power source: 24V battery

24V reheating from the battery:

In mode 5, the boiler can be reheated via the battery. In this case, the battery is discharged.

If the temperature of the water falls below a minimum water temperature set on the boiler (e.g. 30°C), then the boiler uses the energy from the battery to heat up the water.

However, the battery is only discharged to a residual capacity of 50% to ensure that other electrical consumers, such as lamps or a refrigerator, continue to be supplied with sufficient power. The boiler stops the reheating process when a battery voltage of 24.8V is reached.

If, on the other hand, the water temperature in the boiler is higher than the set minimum water temperature, then the battery will not be discharged. In this case, the boiler would act as in mode 4 and start the heating process only when the battery is fully charged.

Notice:
Maximum heating power of the boiler: 350W.
Approved battery type: LiFePO4

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More product highlights

100% renewable

Hot shower from renewable energy anywhere in the world. 

Special caravan development

Innovative technologies and intelligent algorithms for maximum comfort. 

Flexible mounting

The boiler can be mounted both horizontally on a base plate or vertically on a wall. 

Installation of the photovoltaic caravan boiler:
Installation: The installation of the Caravan Boiler is very simple. With four screws, the boiler is either firmly screwed to the floor plate or to a stable wall. The mounting rails on the boiler help in easy and safe installation. 

Water connection: The water connection is made via 1/2″ standard thread. Suitable hoses for the connection can be purchased at any Do-It-Yourself store. The boiler is operated under pressure. A simple 12V or 24V DC pump pushes the cold water from the water storage tank into the photovoltaic boiler when needed. At the outlet of the boiler, hot water flows to the tap. There it can be mixed with cold water using a standard faucet.

The maximum water temperature of the boiler is 65°C. When the boiler is completely heated, about 25 liters of 35gr water can be taken from it. 

Power connection: The boiler can be connected directly to the power supply via a 2-meter cable. 

Note:
Electrical and hydraulic connection diagrams can be downloaded from the download area at the bottom of this page. 
The diagrams provided are intended as a planning guide. Individual changes to the wiring can be made depending on the application. 

Anti-freeze

Easy to drain the water in winter. 

Made in Germany

Development and production of all boilers in Germany.

no fossil fuels

Gas odor or exhaust fumes during water heating are now a thing of the past!

Scope of delivery

  • 1x 10 liter photovoltaic caravan boiler
  • 2x mounting rails
  • 1x digital thermometer with 5 meter cable length
  • 1x instruction manual
  • 1x Relief and check valve
  • 1x drain valve and T-piece

Download area more documents:

(data sheets, manufacturer’s instructions, declarations of conformity, assembly videos, circuit diagrams, etc.)

Additional information

Weight 7,8 kg
Dimensions 40 × 30 × 33 cm
Model

CPVB-10

Volume

9,5 L

Max. Heating power

550W

Max. current

15,5A

Energy consumption (heating process from 15°C to 65°C)

580 Wh

Maximum pressure

7 Bar

IP Class

X1

Max. water temperature

65 °C

Integrated MPP tracker

Yes

Integrated reverse polarity protection

Yes

Integrated deep discharge protection

Yes

Digital display on the boiler

Yes

Temperature display with 5 meter cable

Yes

Boiler tank

Steel

Protective coating, protective device

Enamel, magnesium anode

CE-certificate

Yes

Water connection

G1/2 (M) – (1/2 inch standard)

Recommended photovoltaic power

150 – 300 Wp

max. connected photovoltaic power

1500 Wp

Max. Open circuit voltage of the photovoltaic modules

42,4 V