CLC/TS 50612:2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Competence
5 Selection of portable electrical combustion flue gas analyser
6 Care, use and maintenance of portable electrical combustion
   flue gas analyser
7 Determination of the combustion performance of an appliance
8 Measured combustion values above the action level
9 Procedure for use of a portable electrical combustion flue gas
   analyser at the time of commissioning, servicing or maintenance
10 Completion report
Annex A (informative) - Portable electrical combustion flue
        gas analysers
Annex B (informative) - Completion report
Annex C (informative) - Multi-hole sample probes
Annex D (informative) - Flue/draught diverter configurations for warm
        air heaters
Bibliography

This Technical Specification provides guidance on the selection, use and maintenance of portable electrical apparatus conforming to EN 50379-1 [4] and EN 50379-2 [5] or EN 50379-3 [6] to:a)measure combustion flue gas parameters of appliances in domestic premises burning 1st, 2nd or 3rd family gases of the following description:1)Type A, Type B and Type C gas-fired appliances, except those appliances where the appliance instructions (or design, see 7.3.2.1), prohibit combustion sampling, and,2)all gas-fired appliances for which the appliance manufacturer has provided a purpose-designed combustion sampling point or specific sampling instructions,b)use as a diagnostic instrument to assist an operative:1)in confirming satisfactory combustion at the time of commissioning, in accordance with appliance instructions or national or local regulations or standards;2)in confirming satisfactory combustion at the time of servicing in accordance with national or local regulations or standards or following servicing in accordance with appliance instructions;3)in confirming satisfactory combustion following maintenance, in accordance with appliance instructions or national or local regulations or standards.NOTE 1Type A, Type B and Type C classification of gas-fired appliances are defined in 3.1.2 and more fully in CEN/TR 1749 [2].NOTE 2Existing national or local regulations or standards conflicting with the guidance in this Technical Specification have precedence over this guidance.NOTE 3It is not the intention of this Technical Specification to suggest that portable electrical combustion flue gas analysers are to be used as a substitute for normal service and maintenance carried out in accordance with the gas appliance instructions. Clause 9 describes how analysers can be used in conjunction with the appliance instructions.NOTE 4EN 50379-)1 [4] specifies general requirements for the construction, testing and performance of portable spot reading apparatus designed to check the combustion performance of appliances in domestic premises using commercially available fuels.NOTE 5EN 50379-2 [5] is for apparatus intended to be used for statutory measurements. In several European countries, legal requirements exist for the performance of heating appliances (see EN 50379-1:2012, informative Annex A [4]). Legal consequences resulting from performance measurements makes for strict requirements for the apparatus used (see EN 50379-1:2012, normative Annexes B and C [4]).NOTE 6EN 50379-3 [6] is for apparatus intended to be used for non-statutory applications, which allows for reduced performance requirements for the portable electrical apparatus.NOTE 7This Technical Specification deals with the determination of levels of combustion gases carbon monoxide (CO), carbon dioxide (CO2) and/or oxygen (O2) in combustion products from gas-fired appliances. Combustion products from gas-fired appliances will contain nitrogen oxides (NOX), predominantly nitrogen monoxide (nitric oxide, NO) and nitrogen dioxide (NO2). This Technical Specification does not deal with the measurement of combustion products such as NOX and aldehydes.