SNV - SN EN 461
Specification for dedicated liquefied petroleum gas appliances - Flueless non-domestic space heaters not exceeding 10 kW
| Organization: | SNV |
| Publication Date: | 1 December 1999 |
| Status: | active |
| Page Count: | 74 |
| ICS Code (Gas heaters): | 97.100.20 |
scope:
This European Standard defines, for the purpose of type examination, the requirements, the test methods and the marking of non-domestic flueless space heaters (including greenhouse heaters and diffusive catalytic combustion heaters), having a nominal heat input not exceeding 10 kW (Hs) burning 3rd family gases at nominal operating pressure not exceeding 50 mbar, referred to in the body of the text as 'appliances'.
It covers the following types of appliance:
a) fixed heaters designed for installation up to 2,5 m burning commercial butane, commercial propane, or their mixtures;
b) portable or mobile heaters burning commercial butane and/or commercial propane including those that incorporate a compartment for a transportable refillable liquefied petroleum gas cylinder.
NOTE 1: Appliances having a nominal heat input not exceeding 4,2 kW and intended for use in domestic premises are covered by EN 449.
There are no specific thermal efficiency requirements appropriate to these types of appliances as:
c) all the heat produced by the combustion process is released into the space to be heated;
d) the requirements with regard to the combustion performance, which is a safety matter, ensure the effective burning of the fuel gas.
It does not apply to appliances which incorporate a fan for either the assistance of combustion or the circulation of convected air. Neither does it cover appliances incorporating full sequence automatic controls.
Requirements for appliances given in this Standard assume that the supply of gas will be controlled by a pressure regulator giving an outlet pressure as indicated in Table A.1.
Requirements for controls, given herein, relate to controls fitted as part of, or supplied with, particular appliances; they do not necessarily provide a complete specification for controls intended for general use.
NOTE 2: Catalytic heaters are not considered suitable for use in areas having chemicals present which are likely to prevent the correct operation of the catalytic pad.
This Standard does not cover cylinders for liquefied petroleum gases or their associated regulators.
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