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INSTALLATION AND OPERATING INSTRUCTIONS
DC SERIES COMBI BOILERS DC 23-84, DC 29-106, DC 33-124, DC 33-160
1.0 INSTALLATION....................................................1-1
1.1 GENERAL ...................................................1-1
1.2 CODE REQUIREMENTS ........................................1-2
1.3 LOCATION ...................................................1-2
1.4 EXHAUST VENTING AND AIR INTAKE.............................1-3
1.5 CONDENSATE REMOVAL......................................1-16
1.6 WATER PIPING - SPACE HEATING ..............................1-19
1.7 DOMESTIC HOT WATER SYSTEM...............................1-26
1.8 GAS PIPING.................................................1-30
1.9 ELECTRICAL CONNECTIONS ..................................1-31
2.0 BOILER SYSTEMS AND OPERATION .................................2-1
2.1 GENERAL ...................................................2-1
2.2 CONTROL ...................................................2-2
2.3 INSTALLER INTERFACE ........................................2-2
2.4 TANKLESS DOMESTIC HOT WATER MODES.......................2-7
2.5 ADDING DOMESTIC HOT WATER STORAGE.......................2-7
2.6 SPACE HEATING ..............................................2-8
2.7 SEQUENCE OF OPERATION ....................................2-9
3.0 STARTUP AND COMMISSIONING ....................................3-1
3.1 LIGHTING AND SHUTTING DOWN THE BOILER ....................3-1
3.2 PRIOR TO START-UP ..........................................3-2
3.3 COMMISSIONING .............................................3-2
3.4 FUEL CONVERSION ...........................................3-4
4.0 MAINTENANCE ...................................................4-1
4.1 BOILER MAINTENANCE ........................................4-1
5.0 TROUBLESHOOTING ..............................................5-1
5.1 PRELIMINARY CHECKS ........................................5-1
5.2 ELECTRONIC COMPONENTS ...................................5-2
5.3 WARNINGS AND FAULTS .......................................5-5
5.4 OTHER FAULTS...............................................5-7
6.0 DIAGRAMS.......................................................6-1
6.1 PARTS DIAGRAMS ............................................6-2
6.2 WIRING DIAGRAMS ...........................................6-4
CONTENTS
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