Commercial to Domestic Changeover (COCDN:1)

To enable experienced commercial operatives to work in domestic dwellings.

Entrants must have a current CCCN:1 qualification.

Course Duration
4 days (2½ days training and 1½ days assessment).

Maximum Number
8 persons

Training Aids
Lecture notes, audio visual presentation and a range of domestic gas appliances and models.

Written and practical test in line with ACS scheme requirements.

On successful completion of the course candidates will receive CCN:1 Core Gas Safety qualification.

Additional Information
This tailored assessment for domestic work will cover changes which a commercial operative will encounter when working in a domestic dwelling.

Meeting the needs and expectations of service users is of the highest priority to our staff. Therefore if you have any concerns or wish to make a comment about the service please contact:


On successful completion of this course learners will be able to demonstrate competence in relation to:

    • Gas Safety Legislation

    • Gas emergency actions and procedures

    • Characteristics of combustion

    • Ventilation

    • Installation of pipework and fittings

    • Tightness testing / purging

    • Checking and/or setting meter regulators

    • Identifications of unsafe situations

    • The operation of and positioning of emergency isolation controls and valves

    • Emergency notices and warning labels

    • Checking and setting appliance burner pressures and gas rates

    • The operation and checking of appliance Gas safety devices and controls

    • Flueing / chimney standards

    • Flue / chimney testing

    • Installation of open, balanced and fan assisted flue / chimney assemblies

    • Re-establish existing gas supply and relight appliances


    • Gas safety regulations, British Standards and manufacturer’s instructions

    • Emergency actions, procedures, labels and warning notices

    • Unsafe situations, landlord checks and related documentation

    • Combustion, gas rates, burner/ installation pressures

    • Tightness testing, purging and relighting appliances

    • Pipework and fittings

    • Operation of appliance gas safety devices and controls

    • Ventilation

    • Flueing/chimney standards, installation and testing
Related Courses
Related News