Got this from the car boot for £2
its made by Rinnai
I was thinking `gas appliance, cant save it` but I showed it to the calor gas specialist, who said I need a regulator and a new hose.
Oh, and to trade in my 1lb can for a full one. (they still do them!)
I can have a working heater...if I spend about £20 on gas and new kit....