This British Standard specifies the installation requirements for gas-fired overhead radiant heaters and systems for the environmental heating of premises other than domestic dwellings to which the Gas Appliances (Safety) Regulations 1995 [1] apply.
This standard applies to the installation of heaters that are designed to utilize gases of group H of the second family (e.g. natural gas), gases of group P of the third family (e.g. propane) as well as gases of group B of the third family (e.g. butane) (see BS EN 437:2003).
NOTE 1 This standard does not specifically cover LPG/air for which additional requirements might be necessary.
This standard applies to the installation of gas-fired overhead luminous radiant heaters within the scope of BS EN 419-1:2000, single burner gas-fired overhead radiant heaters within the scope of BS EN 416-1:1999 and multi-burner gas-fired overhead radiant tube heater systems within the scope of BS EN 777-1:1999. BS EN 777-2:1999. BS EN 777-3:2000 and BS EN 777-4:1999.
NOTE 2 For the purposes of this standard, installation includes design, inspection and commissioning. It is recognized that each of these tasks can at times be performed by the same persons.
NOTE 3 The heat inputs, and ventilation rates in cm/kW of heat input given in this standard are based on the net calorific value.
The provisions of this standard do not apply to the installation of gas-fired overhead radiant heaters and systems:
a) to which the Gas Appliances (Safety) Regulations 1995 [1] do not apply;
b) that are designed for use in domestic premises;
c) that are intended for outdoor use;
d) that are supplied with a heated fluid from a separate source; or
e) that are portable or transportable.