Hello Gordon,
The gas regulations require that all installation, service, repair or removal of all gas appliances in touring caravans must be carried out by a competent person. This applies to ALL gas installations including touring caravans.
For Touring caravans, 'competent' does not have to mean Corgi, however, it does mean the person undertaking the work will have a full working knowledge of the product they are dealing with, and will work to the safety and testing requirements of the Law.
The fact that you have had to revert to asking your question on this forum suggests you do not have a full working knowledge of the appliance and the regulations, and thus I believe you may not have the relevant competencies as required by the law.
This job must be carried out by a competent fitter.