TTulpeŽ Indoor B-11 P37 Eco, propane instantaneous gas water heater with battery ignition, ErP/Low NOx

11 liters per minute propane gas water heater with battery ignition. Gas pressure: 30-37 mbar


The new TTulpe® Indoor B-11 Eco is an open modulating propane water heater designed for indoor installation. This model has a capacity of 11 liters per minute, providing efficient and reliable hot water supply.

Energy Efficiency and Ease of Use:

The self-modulating valve adjusts the amount of energy needed to heat the water, resulting in significant energy savings. Additionally, there is a gas-saving mode for reduced gas consumption in warmer months. Due to its modulation, this water heater is ideal for use with mixer taps or thermostatic faucets.

Low Water Pressure Requirement:

This water heater operates at a minimum water pressure of 0.2 bar, the lowest on the market, making it suitable for various applications such as boats, caravans, tiny houses, apartments, or holiday homes.

Safety and Installation:

As an open type gas water heater, the Indoor B-11 requires a flue pipe for outdoor exhaust and adequate ventilation in the installation area. Various safety features ensure the heater shuts down if exhaust gases are not adequately vented. The heater has manual controls for gas and water flow, and the temperature can be adjusted with the knob.

Automatic Ignition:

The automatic ignition operates on a 1.5-volt battery and activates when water flows through the unit. The pilot light ignites the main burner when hot water is needed and automatically extinguishes after 60 seconds when there is no hot water demand. This feature ensures minimal maintenance after installation.

Easy Installation:

The heater has ½ inch threaded connections for water and gas, making installation straightforward. The unit comes with all necessary components for quick installation.

Technical Specifications:

  • Gas Type: Propane, butane, or LPG
  • Gas Pressure: 30-37 mbar
  • Nominal Output Power: 19.3 kW
  • Battery Ignition: 1.5 Volt
  • Frost Protection: No
  • Dimensions: 314 x 592 x 246 mm (w x h x d)
  • Minimum Water Pressure: 0.2 Bar
  • Maximum Water Pressure: 10 Bar
  • Water Flow Rate: between 2.5 and 11 liters per minute
  • Temperature Range: 35 to 65 degrees Celsius
  • Flue Gas Connection: 110 mm
  • Net Weight: 12 kg
  • Energy Class: A
  • Domestic Hot Water Quantity: M (comparable to CW3)
  • Electric Frost Protection System: No
  • Certifications: KIWA, Gastec

Included in Delivery:

  • Water Heater
  • Manual
  • 1 x 1.5 Volt battery type LR20
  • Filter screen


  • 2 years

The TTulpe® Indoor B-11 Eco offers an efficient and safe solution for your hot water needs, with a focus on ease of use and environmental friendliness.

Brand: TTulpeŽ
Energy class: Product sheet
£ 310,- incl. VAT

Sold out, you can still order this item, we will ship it asap when available.