• C7 Continuous Flow

    Gas · Continuous Flow Hot Water Systems

    Key Specifications

    Suitable for
    2 - 3 Bathrooms ¹
    Fuel type
    20.5 kg
    366 mm
    205 mm
    573 mm

    Not designed for commercial use

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    • Warranty Information

      Domestic Warranty

      12 Year Heat Exchanger
      3 Years Parts and Labour


      1 Year Heat Exchanger
      1 Year Parts and Labour

    • Considerations


      Save space with small footprint mounted on your wall

      They heat water as you need it, so you will never run out of hot water

      Controllers can be installed to accurately deliver required water temperature


      You may need to upgrade your gas line which can add to your upfront costs

      Small amount of water (approx 1 to 2 litres) is wasted in initial delivery

      No mains pressure

      Takes longer to deliver hot water than a storage heater

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

    The Thermann C7 high efficiency Gas Continuous Flow unit ensures you will have enough hot water, when you need it. This unit has been developed to reduce wasted energy by pre-heating the water using heat from the gas exhaust, meaning you'll use less energy. With a 12 year warranty, you can rest assured you are covered for the life of the unit, and optional universal controllers ensure you always have precise control of your hot water temperature settings. The unit is available as a 26L model in both NG and LPG to suit your gas type.

    • 15% more efficient (compared with standard 26L models)
    • Japanese technology and manufacture
    • AGA approved
    • Product quality guarantee
    • Watermark approved
    • Available in NG and LPG in 50 and 60 degree models
    • Optional universal controllers available

    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 exchanger

    6. The warmed water passes through a second heat exchanger to the designated temperature

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

    C7 Continuos Flow Systems GIF
  • C7 Continuous Flow line drawing
    Features 26 L
    No. Bathrooms 2 – 3
    Energy Rating 50°C (stars) 7.3
    Energy Rating 60°C (stars) 7.0
    Capacity at 25°C rise (L/min) 26
    Capacity at 40°C rise (L/min) 16.25
    Gas Type Available NG, LPG
    Measurements 26 L
    Nominal hourly gas consumption (MJ/h) 173
    Test point pressure NG (kPa) 0.84
    Test point pressure LPG (kPa) 1.27
    Minimum water pressure (kPa) 115
    Maximum water pressure (kPa) 1200
    Minimum gas inlet pressure NG (kPa) 1.13
    Minimum gas inlet pressure LPG (kPa) 2.75
    Maximum gas inlet pressure NG (kPa) 5.0
    Maximum gas inlet pressure LPG (kPa) 7.0
    Minimum flow rate ignition (L/min) 2.7
    Input voltage single phase 50HZ (v) 240
    Maximum output current (A) 0.46
    - incl anti-frost heater 0.66
    Inlet gas connection male thread R3/4” (20mm)
    Cold water connection male thread R3/4” (20mm)
    Hot water connection male thread R3/4” (20mm)
    Condensate connection male thread R1/2" (15mm)
    Relief valve pressure setting (kPa) 1400
    Weight dry (kg) 20.5
    Dimensions (DxWxH mm) 205x366x573
  • Product code Number Of People Delivery Capacity (At 25 Deg C Rise) Gas Type Temperature Setting Gas Consumption
    9506816 4-6 26 L/min Natural 60 deg C 173 MJ/h
    9506815 4-6 26 L/min Natural 50 deg C 173 MJ/h
    9506818 4-6 26 L/min LPG 60 deg C 173 MJ/h
    9506817 4-6 26 L/min LPG 50 deg C 173 MJ/h