Carbon Monoxide/Dioxide Direct Analysis (CMDDA1)

Key Details

  • Available at:
    CIST Llangefni
  • Course type:
    Short Course
  • Study Mode:
  • Level:
  • Programme Area:
    Construction and the Built Environment
  • Course Length:

    2 days

  • Bilingual:

    Delivery of the course is bilingual. Assessment is English only.

Course Description

Carbon dioxide/carbon monoxide testing training is necessary for gas engineers responsible for suspected CO leak call outs in domestic properties. Cases of carbon monoxide poisoning are never far from the news making this ACS module a very important one for the safety of your customers.

Entry Criteria

CMDDA1 training and assessment candidates must hold a current Core Domestic Gas Safety (CCN1) qualification or a Core LPG Gas Safety (CCLP1) qualification or valid equivalent NVQ or QCF qualification, plus appropriate appliances.


A course manual is supplied during the course. Also, operatives should be familiar with BS EN 7967 Part 1 – 4

CMDDA1 candidates will be trained and assessed in the following areas:-

  • Carrying out ambient CO and CO2 testing
  • Combustion performance analysis using electronic portable gas analysers on domestic gas appliances in dwellings following:
  • Indication of fumes
  • Smells
  • Spillage or leakage of combustion products
  • Carbon monoxide detector activation


Theory & practical assessments


Other Grŵp Courses

Would you like to apply for this course?

Please call Busnes@LlandrilloMenai today on 08445 460 460 or email