AERCO Innovation (G-13-1854 and above) - Manual (Page 3)

Innovation Water Heaters Installation, Operation & Maintenance Manual
OMM-0078_0J AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 3 of 196
GF-128 Phone: 800-526-0288 PRI: 11/22/2013
TABLE OF CONTENTS
FOREWORD ............................................................................................................................................. 7
CHAPTER 1. SAFETY PRECAUTIONS ......................................................................................... 13
1.1 WARNINGS & CAUTIONS ..................................................................................................13
1.2 EMERGENCY SHUTDOWN ...............................................................................................14
1.3 PROLONGED SHUTDOWN ...............................................................................................15
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.......................................................................... 20
2.6 TEST HOSE BIB CONNECTION ........................................................................................21
2.7 SYSTEM RECIRCULATION LOOP.....................................................................................22
2.8 PRESSURE & TEMPERATURE RELIEF VALVE INSTALLATION .....................................24
2.9 CONDENSATE DRAIN & PIPING .......................................................................................24
2.10 GAS SUPPLY PIPING ......................................................................................................26
2.10.1 Gas Supply Specifications. ............................................................................................................ 26
2.10.2 Manual Gas Shutoff Valve ............................................................................................................ 26
2.10.3 External Gas Supply Regulator ..................................................................................................... 27
2.11 AC ELECTRICAL POWER WIRING ..................................................................................28
2.11.1 Electrical Power Requirements .................................................................................................... 28
2.12 FIELD CONTROL WIRING ...............................................................................................29
2.12.1 OUTDOOR AIR IN Terminal ........................................................................................................... 30
2.12.2 COMBUSTION AIR Terminals ........................................................................................................ 30
2.12.3 O2 SENSOR Terminals .................................................................................................................. 31
2.12.4 SPARK SIGNAL Terminals .............................................................................................................. 31
2.12.5 ANALOG IN Terminals................................................................................................................... 31
2.12.6 B.M.S. (PWM) IN Terminals .......................................................................................................... 31
2.12.7 SHIELD Terminals .......................................................................................................................... 31
2.12.8 ANALOG OUT Terminals ............................................................................................................... 31
2.12.9 RS485 Comm Terminals ............................................................................................................... 32
2.12.10 RS232 Comm Terminals ............................................................................................................. 32
2.12.11 VFD/BLOWER Terminals ............................................................................................................. 32
2.12.12 Interlock Terminals ..................................................................................................................... 32
2.12.13 FAULT RELAY Terminals .............................................................................................................. 33
2.12.14 AUX RELAY Terminals ................................................................................................................. 33
2.13 FLUE GAS VENT INSTALLATION ....................................................................................33
2.14 COMBUSTION AIR ...........................................................................................................34
2.14.1 Combustion From Outside the Building ....................................................................................... 34
2.14.2 Combustion Air from Inside the Building ..................................................................................... 34