Rinnai 11i 24 kW LPG Gas Water Heater with Horizontal Flue Kit

Rinnai 11i LPG gas water heater

The Rinnai 11i LPG Gas Water Heater is an internal, wall-mounted, room-sealed instantaneous multipoint water heater designed to provide continuous hot water for suitable domestic and light-commercial applications.

The 11i combines Low-NOx combustion technology, direct electronic ignition, internal installation, frost protection and push-fit flue technology in a compact appliance.

This configuration is supplied with a horizontal flue kit, making it suitable for installations where the approved flue route exits horizontally through an external wall.

Rinnai specifies a maximum water flow of 11 litres per minute, while the maximum gas consumption for the 11i is approximately 23.7 kW.

Key Features

• Rinnai 11i LPG gas water heater
• Rinnai Infinity 11i range
• LPG operation
• Internal wall-mounted installation
• Instantaneous continuous-flow hot water
• Multipoint water heating
• Low-NOx combustion technology
• Forced room-sealed flue system
• Maximum flow up to 11 L/min
• Maximum gas consumption approximately 23.7 kW
• Direct electronic ignition
• 37–65°C temperature range
• Built-in frost protection
• Push-fit flue system
• Compact 541 × 373 × 173 mm design
• Approximately 14 kg appliance weight
• Horizontal flue kit configuration
• Suitable for appropriately specified domestic and light-commercial applications

Rinnai 11i LPG Water Heater

The Rinnai 11i LPG water heater is designed for properties requiring hot water from an LPG-powered instantaneous system.

Instead of storing a fixed volume of hot water in a conventional cylinder, the appliance heats water as it passes through the water heater.

This continuous-flow configuration can be useful for:

• Houses
• Apartments
• Flats
• Holiday homes
• Rental properties
• Rural properties
• LPG-powered buildings
• Small commercial premises
• Light-commercial hot-water applications
• Temporary or emergency hot-water installations

Actual performance depends on incoming water temperature, water pressure, selected outlet temperature and gas supply.

11 L/min LPG Water Heater

The Rinnai 11i has a maximum flow rate of 11 L/min under the manufacturer’s specified conditions.

This makes it relevant to customers searching for:

• Rinnai 11 L/min LPG water heater
• 11 L/min LPG water heater
• 11 litre LPG water heater
• Rinnai 11i water heater
• Rinnai 11i LPG
• LPG instantaneous water heater
• LPG multipoint water heater

The actual usable flow at a particular temperature rise can be lower than the maximum stated flow.

Rinnai’s technical specification gives a hot-water delivery capacity of approximately 8.1 L/min at a 33°C temperature rise.

24 kW-Class LPG Gas Water Heater

The Rinnai 11i is commonly marketed as a 24 kW LPG water heater.

The manufacturer’s current technical specification lists maximum gas consumption at approximately 23.7 kW.

For accurate technical descriptions, it is preferable to use:

23.7 kW maximum gas consumption

in the specification table, while 24 kW LPG water heater can be used naturally in the product title and search-oriented copy.

This avoids presenting 24 kW as an exact heat-output figure when it is actually the rounded maximum gas-consumption rating.

Low-NOx LPG Water Heater

The Rinnai 11i incorporates Low-NOx combustion technology.

Rinnai describes the 11i as an Ultra Low-NOx water heater and states that it is designed to meet the relevant EcoDesign requirements. The manufacturer’s technical specification lists approximately 50 mg/kWh NOx for the 11i.

This makes Low-NOx an important product attribute for customers comparing modern LPG gas water heaters.

Applicable environmental and gas-appliance requirements should always be checked for the destination country.

Internal Room-Sealed Installation

The Rinnai 11i is designed for internal wall-mounted installation.

It uses a forced room-sealed flue system, with combustion air and exhaust gases managed through the approved flue arrangement.

The appliance should be installed according to the current Rinnai instructions and applicable local regulations.

Before installation, the installer should verify:

• Gas type
• Gas pressure
• Water pressure
• Flue route
• Flue terminal position
• Electrical supply
• Appliance clearances
• Condensate requirements
• Installation environment

Horizontal Flue Kit

This EuroFuelSupply configuration is supplied with a horizontal flue kit.

Rinnai’s standard 11i horizontal flue kit uses an 80/125 mm flue system. Rinnai’s published kit information identifies the standard horizontal kit as including the flue adaptor with condensate trap, an 80/125 mm horizontal wall terminal, 80/125 mm 90-degree bend, wall gaskets and a 70 cm flue length.

Standard Horizontal Flue Kit Components

According to Rinnai’s current flue documentation, the standard 11i/17i horizontal flue kit includes:

• Flue adaptor with condensate trap
• 80/125 mm wall terminal
• 80/125 mm 90° bend
• White and black wall gaskets
• 70 cm flue section

The exact components supplied with this EuroFuelSupply product should be confirmed against the physical stock and order configuration before publication.

Rinnai 11i Flue Length

Rinnai’s 11i technical documentation specifies a maximum flue run of 2.5 metres, less 0.5 metres per 90° bend.

The installer should calculate the actual permitted flue length using the current Rinnai installation instructions and the exact number and type of bends used.

Do not extend, modify or combine flue components outside the manufacturer’s approved configuration.

Temperature Control

The Rinnai 11i has a selectable temperature range of approximately 37°C to 65°C.

Rinnai’s specification also identifies temperature accuracy of approximately ±1°C under the relevant conditions.

Actual temperature stability depends on water flow, incoming water temperature, gas supply and system conditions.

Direct Electronic Ignition

The appliance uses direct electronic ignition rather than a continuously burning pilot light.

The electronic ignition system starts the appliance when hot-water demand is detected, subject to the appliance’s control and safety sequence.

Frost Protection

The Rinnai 11i includes built-in frost protection.

This feature is designed to help protect the appliance against low-temperature conditions, but it should not be treated as a replacement for appropriate installation, insulation and system protection.

The installation environment and local climate should be assessed by the installer.

Compact Rinnai 11i Design

The Rinnai 11i is designed as a compact internal wall-mounted appliance.

Dimensions

Height: 541 mm
Width: 373 mm
Depth: 173 mm

Weight

Approximately 14 kg

These dimensions and weight are listed in Rinnai’s current product specification.

Always check the current manufacturer’s installation drawing for required service clearances.

Technical Specifications

Technical values should be checked against the latest Rinnai documentation for the exact appliance configuration before installation.

Rinnai 11i LPG for Domestic Hot Water

The Rinnai 11i can be considered for homes where LPG is the available gas fuel and an instantaneous multipoint water heater is required.

Potential applications include:

• Bathroom hot water
• Kitchen hot water
• Multiple domestic outlets
• Apartments
• Holiday accommodation
• Rural homes
• LPG properties
• Replacement installations

The appliance should be sized according to the expected simultaneous hot-water demand.

Rinnai 11i for Light Commercial Applications

The Rinnai 11i can also be considered for appropriately sized light-commercial applications.

Potential uses include:

• Small cafés
• Offices
• Workshops
• Small hospitality properties
• Commercial washrooms
• Rental accommodation
• Temporary hot-water facilities

For larger commercial projects, higher-capacity Rinnai models or cascade systems may be more appropriate.

EuroFuelSupply’s commercial water-heating range includes larger Rinnai continuous-flow and commercial models for higher-demand applications.

LPG Gas Compatibility

The Rinnai 11i is available in both natural-gas and LPG configurations. The LPG appliance is identified by Rinnai as W11i(A)-LPG.

Always ensure that the appliance gas configuration matches the available LPG supply and that the regulator, pipework and gas pressure meet the manufacturer’s requirements.

BioLPG Compatibility

Rinnai identifies applicable 11i configurations as available for BioLPG and also describes the 11i as hydrogen-blend ready for up to 20% hydrogen/methane blending.

Compatibility should always be verified for the exact appliance, fuel specification and installation country before using an alternative gas blend.

Rinnai 11i vs Rinnai 17i

The Rinnai 11i and 17i are both internal continuous-flow multipoint water heaters, but the 17i is the higher-capacity model.

Rinnai 11i

• Up to 11 L/min
• Approximately 23.7 kW maximum gas consumption
• Approximately 14 kg
• Suitable for lower hot-water demand

Rinnai 17i

• Higher flow capacity
• Approximately 36 kW gross LPG input
• Suitable for higher hot-water demand
• Larger-capacity option

The correct model should be selected according to calculated peak hot-water demand rather than choosing solely by nominal kW rating.

Is the Rinnai 11i an LPG Water Heater?

Yes. The Rinnai 11i is available in an LPG configuration identified by the manufacturer as W11i(A)-LPG.

How Many Litres Per Minute Does the Rinnai 11i Deliver?

The manufacturer’s maximum flow specification is 11 L/min.

At a 33°C temperature rise, Rinnai specifies approximately 8.1 L/min.

Actual performance depends on the incoming water temperature, water pressure and selected outlet temperature.

Is the Rinnai 11i a Tankless Water Heater?

Yes.

The Rinnai 11i is an instantaneous, continuous-flow multipoint water heater. It heats water as demand occurs rather than storing a large volume of hot water in an integrated tank.

Is the Rinnai 11i Low-NOx?

Yes. Rinnai describes the 11i as an Ultra Low-NOx water heater and its current technical specification lists approximately 50 mg/kWh NOx.

Is the Rinnai 11i Suitable for Internal Installation?

Yes.

The 11i is designed for internal wall-mounted installation and uses a forced room-sealed flue system.

Does the Rinnai 11i Include a Horizontal Flue?

This EuroFuelSupply configuration is listed with a horizontal flue kit.

Rinnai’s standard 11i horizontal kit uses an 80/125 mm flue arrangement.

The exact components supplied should be confirmed against the order configuration.

What Is the Rinnai 11i Gas Consumption?

The manufacturer’s current specification lists approximately 23.7 kW maximum gas consumption for the 11i.

Professional Installation

The Rinnai 11i is a gas appliance and should be installed and commissioned by an appropriately qualified professional.

Installation should follow:

• Current Rinnai installation instructions
• Applicable LPG regulations
• Local building requirements
• Flue requirements
• Gas-pressure requirements
• Water-pressure requirements
• Electrical requirements
• Appliance clearance requirements
• Destination-country regulations

Gas and flue installations should never be modified outside the manufacturer’s approved configuration.

Buy Rinnai 11i LPG Gas Water Heater in Europe

The Rinnai 11i 24 kW LPG Gas Water Heater with Horizontal Flue Kit is designed for customers looking for a compact internal LPG water-heating solution with continuous-flow operation and a horizontal flue configuration.

EuroFuelSupply supplies heating and water-heating products for residential, trade, installer and commercial customers across European markets.

For trade or project orders, EuroFuelSupply accepts enquiries from homeowners, businesses, installers, developers, retailers and wholesale customers, with delivery-country information used to determine available delivery options.

Before ordering, confirm:

• LPG configuration
• Required water flow
• Incoming water temperature
• Gas pressure
• Horizontal flue route
• Flue length
• Required accessories
• Destination-country installation requirements