Extract from Dux Water Heaters Owner's Handout
Five Year Service
(By Authorised Personnel Only)
The five yearly service should be carried out by an Authorised Person. It is recommended that this service be carried out by your local Dux agent or qualified Dux technician. The service should include the following:
Replace the pressure & temperature relief valve.
Replace the anode.
Clean and service the gas burner and pilot on gas models.
Flush the cylinder.