Technical Guides & Fitting Instructions

Where available, products listed on this site have downloadable PDF technical guides and fitting instructions. Please search for the product using the core product code or product name below. If techincal guides and/or fitting instructions are available for a particular product they will be downloadable from the product page:


Heated towel Rail Function & Installation Information

Dual Fuel Summer Function

All St James radiators are supplied as standard with an electric heating element that can be used independently from the central heating system. When using the electric element during summer months an allowance has to be made for thermal expansion within the radiator. This allowance can be achieved by fully closing the flow in-take valve and partially opening the flow outlet valve preventing the water cycling the system.

By setting the valves in this position will allow for any thermal expansion to disperse into the central heating system. Dual fuel models must never be operated without being bled of air and are full of water and being part of the central heating system.

Winter Operation Function

During winter months the electric element must not be operated in tandem with the central heating system as this will damage the heating element and invalidate the element guarantee.

St James Radiators

All St James radiators are to be installed in compliance with BS5449 – BS7593 – BS7671 to avoid invalidation of the guarantee.

Cast Iron

Radiators with cast iron parts must only be used in a closed indirect system, incorporating a good quality rust inhibitor.

Heat Outputs

Are shown in 600 Celsius

To convert to the Euro norm at 500 Celsius BSEN442 multiply by 0.79.

To convert watts to BTU multiply by 3.4121.

Use 500 Celsius output figures when using a condensing boiler.

Installation and Operating Requirements

We recommend that the St James range of radiators is suitable for closed and indirect heating systems only.

In the event of replacing or adding a radiator to the system it should be cleaned and flushed in accordance with BS7593 standard.

We recommend that this work is undertaken by a Gas Safe qualified registered plumber and the work is carried out in compliance with current building regulations by adding a good quality water treatment inhibitor to the heating system to protect against scale and corrosion and build up of sludge.

Electrical Installation Requirements

We recommend that a competent qualified electrician who has sound knowledge of I.E.E regulations carry out any electrical work, which should meet the I.E.E requirements. Always ensure that all rails are earth bonded and dual fuel models are fitted with the appropriate residual circuit breaker.