ACS Initial (Course code LGTC 2)
ACS Initial (Course code LGTC 2)
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ACS Initial (Course code LGTC 2)

London Gas Training Centre
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NICEIC certification

ACS Domestic Initial Course

(Gas installers who have held the qualifications previously but have let them lapse by more than 12 months, must undertake Gas Safety training and an Initial Assessment Course).

Initial CCN1

Included in our price -Initial CCN1 (Core Domestic Gas Safety) 5-6 days 2-3 days practical and written training, followed by 2-3 days of assessment covering: 


  • Gas safety legislation
  • Gas emergency actions and procedures
  • Characteristics of combustion
  • Ventilation
  • Installation of pipework and fittings
  • Test for tightness
  • Checking and/or setting meter regulators
  • Identification of unsafe situations and use of emergency notices and warning labels
  • Operation of and positioning of emergency isolation controls and valves
  • Checking and setting appliance burner pressures and gas rates
  • Operation and checking of gas safety devices and controls
  • Flueing standards
  • Flue testing
  • Installation of open, balanced and fan-assisted flue systems
  • Establishing existing gas supply and re-light appliances
  • Domestic Appliance Assessments

CPA1 - Combustion Performance Analysis Course

Now included in the CCN1 

  • Investigate factors that may affect combustion
  • Safe and accurate use of a flue gas analyser to take CO/CO2 ratios
  • Adjustments needed to remedy combustion problems

The CPA1 course is for plumbing & heating installers who need to measure CO/CO2 ratios as part of their day to day work. It is now required by the Gas Safe Register as proof that engineers are competent to carry out CO/CO2 analysis on any appliances they are working on.

  • CCN1 Core Gas Safety
  • CENWAT Central Heating Boilers
  • CPA1 Combustion Performance Analysis
  • CKR1 Domestic Cookers
  • HTR1 Gas Fires and Wall Heaters