Gas Works

Fitting a flue to a wall mounted water heater

Anonymous user 23 February 2024 - 3.12 PM

I have a small holiday home in France with a small (old) bottled gas water heater for the bathroom shower mounted on an outside wall. The house is so remote (wonderfully quiet!) there is no central gas supply or 240v mains. (All my energy is from 48vdc batteries charged from a 1.8Kw windgen and 16 solar panels!!) I bought a new propane gas heater which has a vent/hood with a 90mm top outlet. (the previous heater was 80mm) I need to turn the outflow at 90 degrees through the new hole in the wall then turn again with the exterior flue. This is the only vent size Rinnai can supply but all 'standard' vent pipe fittings seem to be 80/100/120 etc? Any suggestion please how I should solve my problem eg. packing around the new 90mm outlet and fitting a 100mm flue pipe? Or maybe fit a 90->80 or 90->100mm converter? Or do you know where I can get 90mm flu pipe? I am VERY competent at most DIY but failing here! :=(( One friend said NOT to use the thin flexible pipe for gas exhaust/outlet. Do you agree?? Help please Tony