I could not find any data on the 50 model but I did find this...
Glow-worm Spacesaver Kfb 60
Manufacturer Glow-worm
Model Spacesaver Kfb 60
Fuel Type Gas
Boiler Type Conventional
Method Non-Condensing
Flue Type Room-Sealed
Fan Fan Assisted
Output (kW) 17.59 - 17.59
Manufactured From/To Unknown - 1997
SAP seasonal efficiency 68%
Neil asked about this yesterday... "is the Glow Worm Spacesaver KFB50 a combi boiler will this give me heat and hotwater"
Given that the 60 model is not a combi then I doubt that the 50 is one either. The 60 model above is very inefficient at 68% compared to a more modern boiler's 90%
If you can get it to work it will make hot water for you that can be used to run a bath from a storage tank and to drive a few radiators.
Peccavi, October 2009
