• Commercial 28L Continuous Flow

    Gas · Continuous Flow Hot Water Systems

    Key Specifications

    Suitable for
    Commercial use
    Manifold Options
    Site Mounted and Factory Mounted
    • Warranty Information

      Domestic Warranty

      12 Year Heat Exchanger
      3 Years Parts and Labour

      Domestic Warranty on a timed recirculation system

      5 Year Heat Exchanger
      2 Year Parts and Labour


      5 Year Heat Exchanger
      2 Year Parts and Labour

    • Considerations


      Thermann Technical Support

      Free sizing service available

      Commercial-grade components

      Able to be manifolded together

      Free commissioning service upon request

      Ideal for ring mains


      May require an upgraded gas line

      Condensing units require a condensation drain

    Always use a licensed plumber when installing a hot water system.

    A great choice for small businesses, our 28L Commercial Gas Continuous Unit is designed for reliability. The Slim 350mm width design enabling easy replacement of existing units. And indoor room sealed models are also available. These units incorporate larger, more robust heat exchangers for high performance and long life. With a 5-year warranty on the heat exchanger and 2-year warranty on heater parts and labour, the 28L will reliably deliver all the hot water you need.

    • Japanese technology and manufacture
    • Commercial-grade heat exchanger
    • Low NOx burner provides improved emissions
    • Commercial-grade components for tough durability
    • Available in indoor and outdoor models
    • Units are linkable so you can scale output

    How it works

    1. A hot water tap is turned on

    2. Water enters the heater

    3. The water flow sensor detects the water flow

    4. The computer automatically ignites the burner

    5. Water circulates through the heat exchangers

    6. The heat exchanger heats the water to the designated temperature

    7. When the tap is turned off, the unit shuts down

    Continuous Flow Systems GIF
  • 28ltr Continuous Flow Commercial line drawing
    Model Dimensions H x W x D (mm)
    28L Indoor 600 X 350 X 280
    28L Outdoor 600 X 350 X 280
  • Product code Model Capacity L/min @ 25oC rise Thermal Efficiency Gas Consumption
    9507240 - 28 84.5% 205 MJ/h
    9507239 - 28 84.5% 205 MJ/h
    9507237 - 28 84.5% 220 MJ/h
    9507238 - 28 84.5% 220 MJ/h