3
USER’S INFORMATION MANUAL
COMBI BOILERS 99
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125
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160
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199
CONTENTS
UNIT’S CONTROLLER .........................................6
INSTALLER INTERFACE ........................................6
Turning appliance on/o ................................................6
Programming mode....................................................7
TANKLESS DOMESTIC HOT WATER MODES ........................9
Tankless domestic hot water - standard and eco comfort modes .................9
SPACE HEATING.............................................10
Overview ...........................................................10
SEQUENCE OF OPERATION ....................................11
LIGHTING & SHUTTING DOWN THE UNIT ........................12
MAINTENANCE..............................................13
General care ........................................................13
Regular maintenance .................................................13
Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Relief valve - maintenance and testing ....................................14
Domestic hot water system .............................................14
SERVICE RECORD ...........................................15