User Manual
RECON Water Heaters Installation, Operation & Maintenance Manual
OMM-0103_0A AERCO International, Inc. 100 Oritani Dr. Blauvelt, NY 10913 Page 3 of 178
GF-147 Phone: 800-526-0288 PRI: 10/28/2014
TABLE OF CONTENTS
FOREWORD..........................................................................................................................................7
CHAPTER1:SAFETYPRECAUTIONS............................................................................................13
1.1 WARNINGS & CAUTIONS ................................................................................................... 13
1.2 EMERGENCY SHUTDOWN ................................................................................................. 14
1.3 PROLONGED SHUTDOWN ................................................................................................. 14
CHAPTER2:INSTALLATION...........................................................................................................17
2.1 INTRODUCTION .................................................................................................................. 17
2.2 RECEIVING THE UNIT ......................................................................................................... 17
2.3 UNPACKING ......................................................................................................................... 17
2.4 SITE PREPARATION ........................................................................................................... 18
2.4.1InstallationClearances...................................................................................................................18
2.4.2SettingtheUnit..............................................................................................................................19
2.5 WATER INLET AND OUTLET PIPING ................................................................................. 20
2.5.1WHMActuator‐ControlledBallValveInstallation..........................................................................22
2.6 INSTALLING THE TEST HOSE BIB AND DRAIN VALVE ................................................... 23
2.7 SYSTEM RECIRCULATION LOOP ...................................................................................... 24
2.8 PRESSURE & TEMPERATURE RELIEF VALVE INSTALLATION ...................................... 25
2.9 CONDENSATE DRAIN & PIPING ........................................................................................ 26
2.10 GAS SUPPLY PIPING ........................................................................................................ 28
2.10.1GasSupplySpecifications.............................................................................................................28
2.10.2ManualGasShutof fValve............................................................................................................29
2.10.3ExternalGasSupplyRegulator
.....................................................................................................29
2.11 AC ELECTRICAL POWER WIRING ................................................................................... 30
2.11.1ElectricalPowerRequirements....................................................................................................30
2.12 FIELD CONTROL WIRING ................................................................................................. 31
2.12.1OUTDOORAIRINTerminal...........................................................................................................33
2.12.2AIRTEMPERATURESENSORTer minals........................................................................................33
2.12.3O2SENSORTerminals..................................................................................................................33
2.12.4SPARKSIGNALTerminals..............................................................................................................33
2.12.5ANALOGINTerminals...................................................................................................................33
2.12.6VALVEFEEDBACKTerminals.........................................................................................................34
2.12.7SHIELDTerminals..........................................................................................................................
34
2.12.8ANALOGOUTTerminals...............................................................................................................34
2.12.9RS485COMMTerminals..............................................................................................................35
2.12.10RS232COMMTerminals............................................................................................................35
2.12.11VFD/BLOWERTerminals.............................................................................................................35
2.12.12INTERLOCKTerminals.................................................................................................................35
2.12.13FAULTRELAYTerminals..............................................................................................................35
2.12.14AUXRELAYTerminals.................................................................................................................36
2.13 FLUE GAS VENT INSTALLATION ..................................................................................... 36
2.14 COMBUSTION AIR ............................................................................................................. 36
2.14.1CombustionFromOutsidetheBuilding.......................................................................................
37
2.14.2CombustionAirfromInsidetheBuilding .....................................................................................37