Output Dry weight Dimensions (WxHxD) Flue connection size ErP
50kW 40kg 450x377x763mm 80/125 A
60kW 40kg 450x377x763mm 80/125 A
70kW 50kg 450x505x763mm 80/125 A
90kW 83kg 600x584x952mm 110/160 N/A
110kW 93kg 600x584x952mm 110/160 N/A
Up to 660kW n/a


  • Features & Benefits
  • Specifications
  • Dimensions
  • Literature
  • Case studies
  • BIM
  • CAD
  • Enquiry
  • Energy Labelling
  • Outputs of 50kW, 60kW, 70kW, 90kW and 110kW making it suitable for a wide range of properties, from large domestic to medium sized commercial premises
  • 9:1 modulation ratio making it extremely energy efficient, saving money and reducing carbon
  • Five year parts and labour warranty* for complete peace of mind
  • Very compact design and reduced weight which is easier to install in smaller spaces; the 50kW and 60kW models are comparable with domestic boilers
  • Weather sensor supplied as standard to manage boiler output according to outside conditions, to help reduce running costs
  • Commissioning by Potterton Commercial engineers and service plans are available to ensure your boiler is working reliably and efficiently

* Terms and conditions apply. Click here for details.

Dimensions and clearance measurements for all models of the Sirius two WH are featured in the tables below.

If you can't find the information you are looking for, you may find it within the product literature.

If you would like to speak to your local Area Sales Manager, please complete the online form within the enquiry tab.


Sirius two WH 50 60 70 90 110
A Width 450 450 450 600 600
B Height 766 766 766 952 952
C Depth 377 377 505 584 584



Sirius two WH 50 60 70 90 110
1 Bottom 500 500 500 500 500
2 L hand 20 20 20 20 20
3 Front 400 400 550 600 600
4 R Hand 20 20 20 20 20
5 Top 300 300 300 400 400

Learn more about the Sirius WH by downloading our product literature.

Download your Building Information Modeling (BIM) object(s) for this product.

Download CAD files for this product using the links below. To access CAD files you will need the correct software installed to allow you to open .dwg files such as AutoCAD

Interested in this product for your premises? Complete the form below and someone from the team will contact you shortly.

Alternatively, speak to your Area Sales Managers about this or any of our products.

Send Sirius Two WH enquiry

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