TABLE OF CONTENTS
A. Important Notices And Warning Symbols 4
B. Identification 6
B.1 Heater Labels.......................................................................... 6
B.2 Model and Serial Number Tag.................................... 6
B.3 Components Diagram ......................................................7
B.4 Control Panel Diagram - 240V Single Phase
Example Shown .....................................................................7
B.5 Gas Manifold Diagram.......................................................8
C. Pre-Operation Inspection 9
C.1 Important Notices ................................................................ 9
C.2 Prior to Heater Start-Up....................................................9
D. Operation 11
D.1 Introduction.............................................................................11
D.2 Modes .......................................................................................... 11
D.3 Start-Up Sequence (All Modes)..................................11
D.4 Occurrences During Normal Operation.............. 11
D.5 Heat Output Adjustment..............................................12
E. Controls & Indications 13
E.1 AAR Signal Wiring - For non SCADA
installations ............................................................................. 13
E.2 Controller................................................................................... 13
E.3 Controls ......................................................................................14
E.4 Indications................................................................................14
E.5 Terminal Blocks .................................................................... 15
E.6 Data Communications ....................................................16
E.7 Controller EEPROM Memory.......................................16
E.8 Activating a COMMUNICATION Parameter......16
E.9 Mode Parameters ...............................................................16
E.10 Activating MODE Parameter ......................................17
E.11 Fan Mode...................................................................................17
E.12 Local EMS Mode ...................................................................17
E.13 RAIL THERMOSTAT Mode, Normal ..........................17
E.14 RAIL THERMOSTAT Mode, Reverse.........................17
E.15 Failure Shutdowns and Alarm Indications......... 17
E.16 Indications and Conditions...........................................17
E.17 Aggressive Retry Feature...............................................18
E.18 Reset..............................................................................................18
E.19 Energy Management System (EMS)........................19
E.20 Terminal Blocks....................................................................20
E.21 Inputs and Outputs............................................................20
F. Troubleshooting 21
G. Installation 25
G.1 Overview ...................................................................................25
G.2 Recommended Tools......................................................25
G.3 Site Preparation - Typical Clearances ..................25
G.4 Site Preparation..................................................................28
G.5 Heater Installation.............................................................28
G.6 Gas Supply Piping and Minimum Pressure
Drop ............................................................................................28
G.7 Electrical Power Connections...................................28
G.8 Power Connections..........................................................29
G.9 Thermostat Installation.................................................. 31
G.10 Energy Management System (EMS) Options31
G.11 Inspection and Commissioning.................................34
H. Heater Specifications 35
H.1 Performance ..........................................................................35
H.2 Gas Firing.................................................................................35
H.3 Gas Conversion.................................................................... 35
H.4 Electrical.................................................................................. 35
H.5 Controls ....................................................................................35
H.6 Wiring Terminations........................................................ 35
H.7 Safety Features.................................................................... 35
H.8 Controller Terminal Identification..........................36
H.9 Schematics.............................................................................37
I. Maintenance 43
I.1 Thermostat Removal..........................................................43
I.2 Motor/Impeller/Base Removal...................................44
I.3 Impeller Removal................................................................44
I.4 Flame Rod and Spark Igniter Removal ...............44
I.5 Burner Removal................................................................... 45
I.6 Burner Defroster Removal ............................................45
