Heater Rinnai Avenger 25 RCE-671TR Natural Gas
Surplus to needs. Had this heater when in Sydney. Don't have gas now. Worked brilliantly, so when I moved and was on LPG, I bought the same but for LPG. Used working. Natural gas is town gas, not tank gas. Manual can be found at https://www.rinnai.com.au/wp-content/uploads/2017/09/Portable_Heater_OIM_Issue_6.pdf