Bosch Group 15SBi / 24SBi WALL MOUNTED BOILERS FOR CENTRAL HEATING and Indirect supply of domestic hot water INSTALLATION AND SERVICING INSTRUCTIONS 24SBi This appliance is for use with Natural Gas or LPG (Cat II 2H3P). 15SBi GC NUMBER 41 311 43 (N.G.) 24SBi GC NUMBER 41 311 44 (N.G.) 15SBi GC NUMBER 41 311 45 (L.P.G.) 24SBi GC NUMBER 41 311 46 (L.P.G.) APPLIANCE OUTPUTS Natural Gas LPG (Propane) 24SBi Minimum 15.0 kW Maximum 24.0 kW 15.0 kW 24.0 kW 15SBi Minimum 6.0 kW Maximum 15.0 kW 6.0 kW 15.0 kW IMPORTANT: THESE INSTRUCTIONS APPLY IN THE UK ONLY AND MUST BE LEFT WITH THE USER OR AT THE GAS METER Read the instructions before starting work - they have been written to make the installation easier and prevent hold-ups.