TTulpe® Indoor B-11 P37 Eco, propane instantaneous gas water heater with battery ignition, ErP/Low NOx
TTulpe® Indoor B-11 P37 Eco – Propane Gas Water Heater 11 L/min with Battery Ignition, ErP A / Low NOx
The TTulpe Indoor B-11 P37 Eco is a compact propane gas water heater with open combustion, designed for instantaneous hot water production. This P37 version is intended for propane G31 at a nominal gas pressure of 37 mbar and delivers up to approximately 11 litres of hot water per minute.
Thanks to its modulating burner, the heating output is adjusted to the actual hot water demand. Electronic ignition is powered by a 1.5 V LR20 battery, so no 230 V mains connection is required.
With ErP energy efficiency class A, load profile M and low NOx emissions of only 20 mg/kWh when operating on propane G31, the Indoor B-11 P37 Eco combines strong hot water performance with simple operation and low-emission combustion.
Up to approximately 11 litres of hot water per minute
The water flow can be adjusted to suit the application. The operating range is approximately 2.5 to 10.8 litres per minute, placing this model in the 11-litre class.
This capacity makes the appliance suitable for applications such as a shower, kitchen sink or other hot water outlets where instantaneous hot water is required.
The actual available flow rate and outlet temperature depend on factors including the incoming cold water temperature, water pressure, selected water flow and gas setting.
Modulating burner
The Indoor B-11 P37 Eco features a modulating combustion system that adjusts the gas supply according to the current hot water demand.
Separate controls allow the gas supply and water flow to be adjusted independently.
Increasing the gas setting raises the heating output. Reducing the water flow generally results in a higher outlet temperature.
These controls allow the gas water heater to be adapted accurately to the required hot water performance.
Automatic battery ignition
Ignition: electronic and automatic
Power supply: 1× alkaline LR20 battery, 1.5 V
As soon as sufficient water flow is detected, the ignition system starts automatically.
No permanently burning pilot flame is required and there is no need for a 230 V mains socket near the appliance.
Propane G31 – 37 mbar
The P37 version is specifically designed for propane G31 at a nominal operating pressure of 37 mbar.
Nominal heat input: 21.7 kW
Nominal useful heat output: 19.4 kW
Minimum heat input: 10.8 kW
Minimum useful heat output: 9.6 kW
Maximum propane consumption: approximately 1.69 kg/h
The gas type and operating pressure of the installation must always correspond with the information shown on the appliance data plate.
ErP class A and Low NOx
ErP energy efficiency class: A
Load profile: M
Energy efficiency: 72%
Sound power level: 62 dB(A)
NOx emissions with propane G31: 20 mg/kWh according to EN 26:2015
The Low NOx burner is designed to reduce the formation of nitrogen oxides during combustion while maintaining reliable hot water performance.
Operation from just 0.2 bar water pressure
Minimum water pressure: 0.2 bar
Normal water pressure: 2 bar
Maximum water pressure: 10 bar
The low minimum operating pressure allows the Indoor B-11 to be used in installations where the available water pressure is relatively limited, provided that sufficient water flow is maintained.
Hot water temperature approximately 35 to 65 °C
The temperature range is approximately 35 to 65 °C.
The actual outlet temperature depends on the incoming water temperature, water flow and selected gas output.
Open combustion – B11BS appliance
The TTulpe Indoor B-11 P37 Eco is a B11BS gas water heater with open, room-air-dependent combustion.
The air required for combustion is taken from the installation room. Adequate permanent ventilation of this area is therefore essential.
Combustion gases must be discharged safely to the outside through a suitable flue system.
The appliance is not intended for installation in bedrooms, bathrooms, shower rooms or toilets.
110 mm flue connection
Flue connection diameter: 110 mm
The gas water heater is equipped with safety monitoring for the correct discharge of combustion gases. If the flue gases cannot be discharged properly, the safety system intervenes to prevent unsafe operation.
Compact dimensions
Despite a capacity of almost 11 litres per minute, the Indoor B-11 remains relatively compact.
Height: 592 mm
Width: 314 mm
Depth: 246 mm
Weight: approximately 11.8 kg
This allows the appliance to provide strong hot water performance while requiring relatively little wall space.
Technical specifications
Brand: TTulpe
Series: Indoor B-11 Eco
Model: Indoor B-11 P37 Eco
Appliance type: B11BS gas water heater
Combustion system: open / room-air dependent
Fuel: propane
Gas type: G31
Gas pressure: 37 mbar
Nominal heat input: 21.7 kW
Nominal useful heat output: 19.4 kW
Minimum heat input: 10.8 kW
Minimum useful heat output: 9.6 kW
Maximum propane consumption: approximately 1.69 kg/h
Water flow: approximately 2.5–10.8 L/min
Capacity class: 11 L/min
Minimum water pressure: 0.2 bar
Normal water pressure: 2 bar
Maximum water pressure: 10 bar
Temperature range: approximately 35–65 °C
Ignition: electronic and automatic
Ignition power supply: 1× alkaline LR20 battery, 1.5 V
230 V mains connection required: no
Gas connection: ½ inch
Water connections: ½ inch
Flue connection diameter: 110 mm
Flue gas temperature with propane: approximately 118–173 °C depending on load
NOx emissions G31: 20 mg/kWh
NOx standard: EN 26:2015
ErP energy efficiency class: A
Load profile: M
Energy efficiency: 72%
Sound power level: 62 dB(A)
Frost protection: no
Installation: vertical wall mounting
Dimensions: 592 × 314 × 246 mm (H × W × D)
Weight: approximately 11.8 kg
Product code: TTIB1137
EAN: 8719689676131
Installation
The TTulpe Indoor B-11 P37 Eco must be connected to a suitable 37 mbar propane supply, the cold and hot water pipework and a correctly sized flue system.
Because the appliance uses air from the installation room for combustion, the area must have sufficient permanent ventilation.
The gas connection, water supply, flue system and mounting must comply with the applicable installation requirements. Installation and commissioning should be carried out by a suitably qualified professional.
Included with this product
TTulpe Indoor B-11 P37 Eco propane gas water heater
Operating and installation instructions
1× alkaline LR20 battery, 1.5 V
Water inlet filter
The required flue system, gas and water hoses, fittings and other installation materials must be selected separately to suit the specific installation.
