AERCO RECON 1000 - Manual (Page 3)

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
CHAPTER 1: SAFETY PRECAUTIONS ............................................................................................ 13
1.1 WARNINGS & CAUTIONS ................................................................................................... 13
1.2 EMERGENCY SHUTDOWN ................................................................................................. 14
1.3 PROLONGED SHUTDOWN ................................................................................................. 14
CHAPTER 2: INSTALLATION ........................................................................................................... 17
2.1 INTRODUCTION .................................................................................................................. 17
2.2 RECEIVING THE UNIT ......................................................................................................... 17
2.3 UNPACKING ......................................................................................................................... 17
2.4 SITE PREPARATION ........................................................................................................... 18
2.4.1 Installation Clearances ................................................................................................................... 18
2.4.2 Setting the Unit .............................................................................................................................. 19
2.5 WATER INLET AND OUTLET PIPING ................................................................................. 20
2.5.1 WHM Actuator‐Controlled Ball Valve Installation.......................................................................... 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
2.10.1 Gas Supply Specifications. ............................................................................................................ 28
2.10.2 Manual Gas Shutoff Valve ............................................................................................................ 29
2.10.3 External Gas Supply Regulator ..................................................................................................... 29
2.11 AC ELECTRICAL POWER WIRING ................................................................................... 30
2.11.1 Electrical Power Requirements .................................................................................................... 30
2.12 FIELD CONTROL WIRING ................................................................................................. 31
2.12.1 OUTDOOR AIR IN Terminal ........................................................................................................... 33
2.12.2 AIR TEMPERATURE SENSOR Terminals ........................................................................................ 33
2.12.3 O2 SENSOR Terminals .................................................................................................................. 33
2.12.4 SPARK SIGNAL Terminals .............................................................................................................. 33
2.12.5 ANALOG IN Terminals................................................................................................................... 33
2.12.6 VALVE FEEDBACK Terminals ......................................................................................................... 34
2.12.7 SHIELD Terminals .......................................................................................................................... 34
2.12.8 ANALOG OUT Terminals ............................................................................................................... 34
2.12.9 RS485 COMM Terminals .............................................................................................................. 35
2.12.10 RS232 COMM Terminals ............................................................................................................ 35
2.12.11 VFD/BLOWER Terminals ............................................................................................................. 35
2.12.12 INTERLOCK Terminals ................................................................................................................. 35
2.12.13 FAULT RELAY Terminals .............................................................................................................. 35
2.12.14 AUX RELAY Terminals ................................................................................................................. 36
2.13 FLUE GAS VENT INSTALLATION ..................................................................................... 36
2.14 COMBUSTION AIR ............................................................................................................. 36
2.14.1 Combustion From Outside the Building ....................................................................................... 37
2.14.2 Combustion Air from Inside the Building ..................................................................................... 37