Watts AERCO CFR 1500 Operation And Service Manual page 3

CONTENTS
6.1 OUTDOOR AIR RESET MODE ............................................................................................................ 30
6.1.1 Outdoor Air Temperature Sensor Installation ................................................................................................ 30
6.1.2 Outdoor Reset Mode Setup ............................................................................................................................ 30
6.2 CONSTANT SETPOINT MODE ........................................................................................................... 31
6.3 REMOTE SETPOINT MODE ................................................................................................................ 32
6.4 DIRECT DRIVE MODES....................................................................................................................... 32
6.5 COMBINATION CONTROL SYSTEM (CCS) ....................................................................................... 33
6.5.1 Combination Control System Field Wiring ...................................................................................................... 34
6.5.2 Combination Control System Setup and Startup ............................................................................................ 34
SECTION 7. BOILER SEQUENCING TECHNOLOGY ........................................................35
7.1 INTRODUCTION ................................................................................................................................... 35
7.1.1 Installation Notes ............................................................................................................................................ 35
7.2 BST IMPLEMENTATION INSTRUCTION ............................................................................................ 36
7.2.1 BST Setup: Constant Setpoint ......................................................................................................................... 38
7.2.2 BST Setup: Remote Setpoint ........................................................................................................................... 38
7.2.3 BST Setup: Outdoor Air Temperature Reset ................................................................................................... 39
SECTION 8. MAINTENANCE ..............................................................................................40
8.1 MAINTENANCE SCHEDULE ............................................................................................................... 40
8.2 IGNITER-INJECTOR ............................................................................................................................ 41
8.3 FLAME DETECTOR ............................................................................................................................. 41
8.4 SAFETY DEVICE TESTING ................................................................................................................. 42
8.5 BURNER INSPECTION ........................................................................................................................ 42
8.6 CONDENSATE DRAIN TRAP .............................................................................................................. 43
8.7 AIR FILTER CLEANING AND REPLACEMENT .................................................................................. 44
8.8 SHUTTING BOILER DOWN FOR EXTENDED PERIOD ..................................................................... 44
8.9 RETURNING THE BOILER TO SERVICE AFTER SHUTDOWN ........................................................ 44
8.10 RECOMMENDED PERIODIC TESTING ............................................................................................ 45
8.11 RECOMMENDED SPARES ............................................................................................................... 46
SECTION 9. TROUBLESHOOTING ....................................................................................47
9.1 INTRODUCTION ................................................................................................................................... 47
9.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES .................................................... 53
SECTION 10. APPENDIX A: WIRING SCHEMATICS ...........................................................54
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