01202 662500
Frequently asked questions
- What does the fault code on my Hamworthy boiler mean?
Our commercial boilers and water heaters will detect a fault and allocate a code that is shown on the control display.
To help you identify common fault and error codes we have an online fault code finder. You simply enter the code and it will give you a potential cause and actions to take to overcome it.
Visit the error code finder page.
If you can't find the fault code please refer to the operating manual as these list all the fault codes and explanations per product. Copies of these manuals can be found on the Installer Guide page or Discontinued Products page.
If you need further help then please contact our technical department on 01202 662500 or email technical@hamworthy-heating.com
Please note any work on commercial boilers should only be investigated by a trained and competent person.
- Do Hamworthy boilers contain asbestos?
They may contain asbestos dependent upon the age and model of the boiler.
Asbestos is a dangerous substance and has been banned from use in boiler manufacture since 1984. Prior to 1984, we did use asbestos in production, primarily in the joint gaskets. Our Discontinued Products section shows the years of manufacture of our older commercial boilers.
For more guidance on asbestos, we recommend referring to the Health and Safety Executive (HSE).
You can identify the age of the boiler by the serial number. For help identifying the age of your boiler, please call the technical team on 01202 662500 with the serial number.
If in any doubt always assume asbestos is present.
- Do you offer FORS delivery?
What is FORS?
FORS stands for Fleet Operator Recognition Scheme (FORS). It is an accreditation scheme that aims to raise levels of safety, efficiency and environmental protection in fleet operators.
A company that is FORS accredited means their delivery vehicles and service is required to follow a set of high standards and protocols.
Such standards include:
Vehicle roadworthiness
Trustworthy and highly competent drivers
Controlled carbon emissions
Stringent health and safety requirements
Safe load transportation
Does Hamworthy Heating offer FORS accredited delivery?
Yes, we do. When you get a product quote from us, please let us know if you would like FORS delivery and we will use an accredited haulage service.
Please note that it will incur an additional cost. Get in touch with us to find out more.
How can I check a company is FORS accredited?
Go to the FORS website. Then search for a company by either their name, address or FORS ID number. You’ll also be able to see their FORS status, bronze, silver or gold.
- Does the Ensbury boiler need shunt pumps & a minimum flow rate?
The Ensbury boilers do not require back end protection pumps.
There is no minimum flow rate required with these boilers for purposes of cooling, however minimum flow rates need to be maintained to maintain energy output.
- Can the Purewell Variheat boiler run on an open vented system?
Yes. The Purewell Variheat boiler is able to operate on an open vented heating system.
We would advise compliance with minimum pressure requirements at boiler, reference guidance note INDG436 (Health and Safety Executive).
Open vent and cold feed pipes must be installed correctly and in compliance with BS6644. You can refer to the installer guide for detailed information on Open Vent and Cold Feed pipes.
However, Hamworthy recommends the use of sealed heating systems, where possible.
If you want to know the difference between a sealed system and open vented system, find out more here.
- Can the Wessex ModuMax boiler run on an open vented system?
Yes. The Wessex ModuMax boiler is able to operate on an open vented heating system.
We would advise compliance with minimum pressure requirements at boiler, reference guidance note INDG436 (Health and Safety Executive).
Open vent and cold feed pipes must be installed correctly and in compliance with BS6644. You can refer to the installer guide for detailed information on Open Vent and Cold Feed pipes.
However, Hamworthy recommends the use of sealed heating systems, where possible.
If you want to know the difference between a sealed system and open vented system, find out more here.
- Will the Wessex ModuMax mk3 be easy to get into the plantroom?
Yes, each module is delivered fully assembled and even the largest 762kW model will pass through a standard doorway.
For sites that are more difficult such as basement and rooftops, the modules can be separated and rebuilt when in position.
Take a look at this case study of the Langham Hotel where the boilers were separated and carried up to the rooftop plantroom.
- What is the maximum working pressure of the Wessex range?
The maximum pressure rating of the Wessex is 10bar.
This pressure is the maximum pressure that the boiler can be subjected to, or in effect the maximum lift pressure rating of the boiler safety valve.
So to allow for a pressure buffer range of 0.7-0.8bar the maximum "working pressure" would be 9.2-9.3bar.
- What are the options when a heat pump might not suit retrofit specification?
While the installation of heat pumps will play a large part in helping the Government achieve its net zero target – air source heat pumps (ASHPs) can fit almost anywhere: retrofit or new build, domestic or industrial and commercial, mixed-use developments – but what about the opportunity in buildings that are not ready to rely completely on low carbon heating systems?