Δt
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 Δt when selecting your radiators, as the same radiator will have different outputs at different water temperatures.
Δt50
Δt50 is the UK standard, however Stelrad also quote at lower levels for lower water temperature 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.
CETIAT tested
A leading independent French laboratory which conducts testing and assessments.
CPD
Continuing Professional Development.
EN 442
Is the European standard to certify the output of heat emitters, it provides consistent testing for stated heat outputs and is strongly regulated. All Stelrad radiators conform to EN442.
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.
ISO9000
Is a set of International regulations related to quality management systems.
K1
Also known as Type 11, is a type of radiator with 1 radiator panel and 1 set of convection fins.
K2
Also known as Type 22, is a type of radiator with 2 radiator panels and 2 sets of convection fins.
K3
Also known as Type 33, is a type of radiator with 3 radiator panels and 3 sets of convection fins.
P+
Also known as Type 21, is a type of radiator with 2 radiator panels and 1 set of convection fins.
P1
Also known as Type 10, is a type of radiator with 1 radiator panel and no convection fins.
RAL
A European wide colour matching system.
STARS
The Stelrad Technical Advanced Radiator System heatloss calculator, offers an even simpler way to get sizing of radiators right, first time.
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.
UIN
Is the Stelrad product identification code.
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, 1 watt is equivalent to 3.412 Btu/hr.
Business Information Modelling (components). Download BIM components from the BIM page.
Chartered Institute of British Service Engineers. CPD approved training courses are available.
Pre approved quality company for health and safety, quality and sustainability.
Royal Institute of British Architects. CPD approved training courses are available.
OHSAS 18001 Accreditation Standard for Occupational Health and Safety management.
