Ascent Oil – August 2019 4
TABLE of CONTENTS
TABLE of CONTENTS .............................................................................................................................................................. 4
HOMEOWNER/USER NOTE: ................................................................................................................................................... 5
RECORD OF INSTALLATION .................................................................................................................................................. 6
SCOPE ...................................................................................................................................................................................... 6
INSTALLER NOTE: .................................................................................................................................................................. 7
ASCENT COMBI and ASCENT PLUS COMBI BOILER ......................................................................................................... 8
PRINCIPLE OF OPERATION ................................................................................................................................................... 8
RECEIVING and UNPACKING ................................................................................................................................................. 9
LOCATION and CLEARANCE ................................................................................................................................................. 9
COMBUSTION AIR ................................................................................................................................................................. 10
CONVENTIONAL CHIMNEY VENTING – ASCENT COMBI ONLY ...................................................................................... 11
L-VENT CHIMNEY – ASCENT COMBI ONLY ....................................................................................................................... 12
POLYPROPYLENE VENTING – ASCENT PLUS COMBI ONLY .......................................................................................... 12
FUEL SYSTEMS ..................................................................................................................................................................... 12
OIL BURNER SETTINGS ....................................................................................................................................................... 13
OIL BURNER MOUNTING ...................................................................................................................................................... 13
GENERAL ASSEMBLY .......................................................................................................................................................... 14
ZONE CONTROL .................................................................................................................................................................... 17
BOILER BYPASS CIRCULATOR........................................................................................................................................... 18
FILLING WITH WATER, VENTING, and PURGING .............................................................................................................. 18
BOILER WATER TREATMENT .............................................................................................................................................. 19
ANTI-FREEZE ......................................................................................................................................................................... 19
WINTERIZING ......................................................................................................................................................................... 19
LINE VOLTAGE WIRING DIAGRAMS ................................................................................................................................... 20
WIRING and CONTROLS ....................................................................................................................................................... 21
ELECTRICAL CONNECTION - LINE VOLTAGE ................................................................................................................... 21
LOW VOLTAGE WIRING ........................................................................................................................................................ 21
HYDROSTAT CONTROL SETTINGS .................................................................................................................................... 21
ADVANCED SETTINGS ......................................................................................................................................................... 22
SELECTING ADVANCED SETTINGS .................................................................................................................................... 22
EMERGENCY WIRING ........................................................................................................................................................... 23
TROUBLESHOOTING THE SAFETY PRESSURE SWITCHES (ASCENT PLUS ONLY) .................................................... 24
PREPARE FOR START UP .................................................................................................................................................... 25
START UP PROCEDURE ....................................................................................................................................................... 25
BOILER OPERATION AND SAFETY CHECKS .................................................................................................................... 25
OIL BURNER OPERATION .................................................................................................................................................... 26
ANNUAL TUNE UP & INSPECTION ...................................................................................................................................... 27
HOT WATER MAINTANENCE ............................................................................................................................................... 31
REPLACEMENT PARTS ........................................................................................................................................................ 32
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