Ideal Boilers Classic FF 250 P Installation And Servicing Manual

Classic FF - Propane Installation 33SERVICING70 PROGRAMMER REPLACEMENT (IF FITTED)68 HEAT EXCHANGER REPLACEMENTNote. Refer to Frame 7 (Boiler Assembly - Exploded view) forillustration of the procedure detailed below.1. Refer to Frame 56.2. Remove the burner /air box assembly. Refer to Frame 51.3. Drain the system.4. Disconnect the water connections. If compression fittingsare used then cut the pipes both above and below thefittings, in order to allow the heat exchange assembly to beremoved. Remove the heat exchanger drain plug anddrain the residual water into a suitable receptacle.5. Remove the fan / collector hood assembly. Refer to Frame52.6. Remove the combustion chamber by unscrewing the 4 tierods.7. Remove the thermostat sensors from the pockets on theheat exchanger by removing the M3 screws and plates.8. Slacken 3 turns only the 4 heat exchanger / interpanelretaining screws.9. Lift the heat exchanger / interpanel assembly upward andforward to disengage key hole fixings. Pull the assemblydownward to clear the water pipes from the back panel.10. Remove the 2 rubber sealing grommets from the top of theback panel to facilitate fitting the new assembly.11. Fit the new heat exchanger assembly, complete with waterpipes, and hang it on the key hole slots and screws.Retighten the screws.12. Replace the 2 rubber sealing grommets.13. Reassembly in reverse order.14. Remake all water connections, ensuring that thecompression fittings (if used) are correctly refitted.15. Fully test all functions, including water and gas soundness.1. Refer to Frame 56.2. Remove the old seal from the bottom edge of thecasing and also from the edges of the boiler backpanel.3. Fit the new self adhesive seals.4. Replace the boiler casing.69 CASING SEAL REPLACEMENT1. Refer to Frame 56.2. Remove the fixing screws and swing thecontrol box down into the servicingposition.3. Pull off the terminal connections fromback of programmer.4. Compress the lugs at each side of theprogrammer and withdraw it from thecontrol panel.5. Fit the new programmer in reverse order.6. Set the programmer to the desiredprogramme and check the operation ofthe boiler.SERVICING