TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P x LIST OF FIGURES Figure 1.1-1. A20 heater ............................................................................................................ 1-1 Figure 1.3-1. A20 heater, General Dimensions ......................................................................... 1-6 Figure 1.4-1. Shipping Container ............................................................................................... 1-6 Figure 2.1-1. Single Air Configuration ....................................................................................... 2-1 Figure 2.4-1. Mounting Strap Locations .................................................................................... 2-2 Figure 2.5-1. Hunter A20 heater ...............................................................................................2-3 Figure 2.7-1. Ventilation Air Duct .................................................................................. 2-5 Figure 3.1-1. Approved Control Boxes...................................................................................... 3-1 Figure 3.3-1. Diagnostic Display, Segment Steps .................................................................... 3-2 Figure 3.3-2. Operating Modes ..................................................................................................3-2 Figure 3.7-1. Data Codes........................................................................................................... 3-3 Figure 3.7-2. Data Codes Mode Example................................................................................. 3-4 Figure 3.8-1. Warning Faults .................................................................................................... 3-5 Figure 3.8-2. Shut Down Faults ................................................................................................3-5 Figure 4.4-1. Ignitor & Ignitor Holder Inspection ....................................................................... 4-5 Figure 5.2-1 A20 Control Cover .................................................................................................5-2 Figure 5.2-2 Design Iteration #1 ................................................................................................ 5-3 Figure 5.2-3 Design Iteration #2 ................................................................................................ 5-4 Figure 5.2-4 Design Iteration #3 ................................................................................................ 5-5 Figure 5.3-1 heater, Major Assemblies ...................................................................................... 5-6 Figure 5.4-1 Shell Assembly ...................................................................................................... 5-8 Figure 5.4-2 Top Cover .............................................................................................................. 5-9 Figure 5.4-3 Top Shell ............................................................................................................. 5-10 Figure 5.4-4 Bottom Shell ....................................................................................................... 5-12 Figure 5.6-1 Vent Fan Assembly ............................................................................................. 5-14 Figure 5.6-2 Vent Fan Assembly ............................................................................................. 5-15 Figure 5.6-3 Bolt Removal Detail, Vent Fan Assembly ............................................................ 5-16 Figure 5.6-4 Vent Fan Assembly ............................................................................................. 5-18 Figure 5.6-5 Vent Fan Assembly ............................................................................................. 5-19 Figure 5.6-6 Vent Fan Assembly ............................................................................................. 5-20 Figure 5.6-7 Bolt Removal Detail, Vent Fan Assembly ........................................................... 5-20 Figure 5.6-8 Combustion Air Duct and Inlet Sealant Application ............................................. 5-21 Figure 5.6-9 Motor Magnet ......................................................................................................5-23 Figure 5.6-10 Motor Magnet Removal ..................................................................................... 5-25 Figure 5.6-11 Motor Magnet Installation .................................................................................. 5-26 Figure 5.6-12 Vent Fan Shroud ............................................................................................... 5-27 Figure 5.6-13 Vent Fan Impeller .............................................................................................. 5-29 Figure 5.6-14 Detail, Vent Fan Impeller Orientation ................................................................ 5-30 Figure 5.6-15 Detail, Vent Fan Impeller Assembly .................................................................. 5-31 Figure 5.6-16 Electronic Programmed Controller & Vent Fan Driver Boards .......................... 5-32 Figure 5.6-17 Detail, Removal of Printed Circuit Boards ......................................................... 5-33 Figure 5.6-18 Detail, Screw Locations ..................................................................................... 5-34 Figure 5.6-19 Detail, Circuit Board Brackets Requiring Heat-Sink Compound ....................... 5-35 Figure 5.6-20 Vent Fan Driver Board ....................................................................................... 5-36 Figure 5.6-21 Detail, Removal of Printed Circuit Board Connector ........................................ 5-37