Henrad Brochure June 2024 - Flipbook - Page 61
Glossary
rt
Refers to the difference in temperature between the water circulating in the central heating system and
that of the ambient temperature. It is important to use the correct rt when selecting your radiators, as
the same radiator will have different outputs at different water temperatures.
rt50
rt50 is the UK standard, however Henrad also quote at lower levels for lower water temperature systems.
Is a set of International regulations related to quality management systems.
BSP
British Standard Piping.
Btu/hr
British Thermal Unit per hour is the standard measurement used to state the amount of output of any
heat generating device.
The CE marking is the manufacturers declaration that the product meets the requirements of the
applicable EC directive. This is applicable to all Henrad products.
EN 442 is the European standard which defines the manufacturing standards for radiators and
convectors which operate at temperatures of less than 120°C. The standard defines the type of steel
which must be used, the type of pressure testing which must be carried out and the accuracy of the heat
outputs quoted in the literature.
Heat loss
Is the amount of heat a room loses, it is therefore an important calculation when determining what size
radiator is required to heat a room to the correct level.
The Manufacturers' Association of Radiators and Convectors.
RAL
A European wide colour matching system.
TBOE / BOE
Refers to which position the pipes are connected to the radiator, OE means opposite end i.e. 1 pipe
on each side, TB is top bottom i.e. 1 pipe is connected to the top and 1 to the bottom, B is both pipes
connected to the bottom.
Type 11
Also known as Type K1, is a type of radiator with 1 radiator panel and 1 set of convection fins.
Type 21
Also known as Type P+, is a type of radiator with 2 radiator panels and 1 set of convection fins.
Type 22
Also known as Type K2, is a type of radiator with 2 radiator panels and 2 sets of convection fins.
Type 33
Also known as Type K3, is a type of radiator with 3 radiator panels and 3 sets of convection fins.
Warranty
The warranty covers any defect that is attributable to a manufacturing, assembly or material fault, further
details available on request.
Watts
Is another measurement for heat output.
Standard steel panel products, which are installed in toilets or any areas of high humidity (including bathrooms, kitchens
and shower rooms, etc.) are limited to a twelve months parts and labour warranty.
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