User manual SAUNIER DUVAL COMBITEK F 23 E 06-98

[. . . ] COMBITEK F 23 E Installation and Servicing Instructions IN WARRANTY TECHNICAL HELPLINE 01773 828400 THIS IS A CAT II2H3+ APPLIANCE 01773 828100 1 INSTALLATION AND SERVICING INSTRUCTIONS COMBITEK F 23 E Note: The boiler serial number is marked on the data label attached to the PCB housing behind the front lower section. Refer to the `Introduction' section for a description of the basic functions of the boiler. The `User' section describes how to safely operate the boiler. Users' Instructions Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2 Controls and lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · Switch boiler On/Off switch to 1 (On). · Light burner by opening a hot tap. · Without upper front panel in place, burner should be prevented from lighting by air flow detection system. · Check that fan runs when burner is lit and stops when it goes out. Cold water inlet filter · Drain down hot water circuit of boiler as follows: · Close isolating valve on cold water inlet connection, see diagram 5. · Open one or more hot water taps to drain boiler. · Undo connecting nut from cold water inlet connection to gain access to filter. · Remove restrictor, then filter from cold water inlet connection. · Clean and inspect filter, replace if necessary. · With both flow restrictor and filter in place, reconnect pipe to inlet connection and tighten. · Fully open isolating cock on cold water inlet connection and check for leaks. Operation of water valve · With the Summer/Winter control in the 'Summer' position, slowly open a convenient tap until boiler lights. · Measure water flow, it should not be greater than 3, 5 litres/minute. · If necessary, replace diaphragm. · Replace all outer panels. 15 Des 047 SERVICING INSTRUCTIONS REPLACEMENT OF PARTS To replace microswitch assembly · Disconnect microswitch by pulling off plug. · Unclip external controls connector from mounting bracket. · Undo two screws securing microswitch assembly to reversing valve assembly, see diagram 20. · Remove microswitch assembly from reversing valve. · Fit replacement microswitch assembly in reverse order to removal. · Reconnect plug and refit external controls connection to bracket. To replace fan · Disconnect power supply and earth leads to fan. · Unscrew and remove two fan retaining screws located at front edge of fan mounting plate. [. . . ] The fault finding charts will enable the majority of faults to be diagnosed. To use the charts effectively, it is necessary to determine exactly which aspects of the boiler are working correctly and which are not. For example: If the domestic hot water works but the heating doesn't, refer to chart No. If heating works correctly but the hot water doesn't, refer to chart No. [. . . ]