Unit Tear Down | Armstrong World Industries 123, 243, 302, 242, 122

Service Reference Manual

UNIT TEAR DOWN

3-3

PLATE MOUNTING

SCREWS

INDUCED DRAFT BLOWER/

COMBUSTION BLOWER

HEAT EXCHANGER

FRONT HEAT

SECTION PANEL

GAS VALVE

HEATING SECTION

VESTIBULE PANEL

CONTROL SECTION

BURNER TRAY

COOLING SECTION

BURNER ACCESS PANEL

FILTER ACCESS DOOR

Figure 3-1

SRM-HW/HWC 8/99

Image 52

Armstrong World Industries 123, 243, 302, 242, 122, 203, 182, 183 manual Unit Tear Down

Contents

Service Reference Manual Models HWC Premier 122, 182, 242, 302 123, 183, 243 Disclaimer Table of Contents Specifications Heating Configuration Table Cooling Configuration Table Model Number Guide Models Covered By This ManualProduct Serial Numbers, Beginning Cooling Configurations of HWC Units Heating Configurations of HW/HWC UnitsSummary of Model Revisions/Variations Physical and Electrical Specifications HWC Units Physical and ElectricalPerformance Ratings Performance Ratings HWC122/123 Performance Ratings Performance Ratings HWC182/183Performance Ratings HWC242/243 Performance Ratings HWC302/303 Blower Performance Blower Performance HWC Units Service Reference Manual Dimensions Wall Sleeve all measurements in inches Sequence of Operation HWC123,183,243,303HW Heating Only Utec 1097 Spark Ignition System HWC122,182,242,302 Fenwal 2461D Ignition Control HW Heating Only Fenwal 05-29 Ignition Control HWC122,182,242,302 Fenwal 05-29 Ignition ControlHWC123,183,243,303 Low Ambient Control HWC122,182,242,302 Blank Connection Diagram United Technologies 1097 Spark Ignition System Refer to Figure Simplified Sequence HWC123,183, 243Detailed Sequence follows L1 Power L2 PowerLine Voltage Low Voltage 24 VAC LIMIT/ROLLOUT Opens Failed Flame SENSE/TRIAL for Ignition FAN on HW Heating Only Simplified Sequence HW w/UTEC 1097 Board At pin 6 of the 6-pin ignition wire harness LIMIT/ROLLOUT Opens Failed Flame SENSE/TRIAL for Ignition Blank HWC122, 182, 242 Fenwal Triton 2461D DSI Ignition Control Refer to Figure 2 on the contactor Second black wireTerminal R on the blower control board Limit Opens FAN on Blank #39247D2 Simplified Sequence HW w/Fenwal 2461D Board First black wire 1 on the ignition control Terminal on the blower control board Low Voltage 24 VAC Limit Opens Fenwal 05-29 Ignition Control Only Refer to Figure Power Limit Opens FAN on Blank Circuits Energized Simplified Sequence HW w/Fenwal 05-29 Board Circulating air blower capacitor terminal Second black wire First black wire 1 on the ignition moduleTerminal L-1 on the blower control board Low Voltage 24 VAC Flame Sense HWC123, 183, 243, 303 Low Ambient HWC123,183, 243 Low Ambient Model HWC122, 182, 242, 302 Low Ambient HWC122,182, 242 Low Ambient Model Chassis Removal Evaporator Blower Assembly Removal Unit Tear DownHeating Section Cooling Section Heat Exchanger Removal Induced Draft Combustion Blower Removal Unit Tear Down Chassis Removal 63 5/8 I.D Evaporator Blower Assembly Removal Service Reference Manual Component Location Illustrations Component Location Illustrations HW/HWC123,183,243,303 HW/HWC122, 182, 242 HW/HWC Panels HW/HWC Exterior Louver/Grill Panel HWC Chassis Assembly Armstrong P/N Armstrong P/N 03982D004 10.75 x Band Armstrong P/N 07407B000 Arms Armstrong P/N 07408B00463 5/8 16.5 x 25 x Unit Components Unit Components Transformer Specifications Transformer *124 VAC Secondary 208/240 VAC Gas Valves *7 White-Rodgers 25K49-120 Gas Valve Specifications Honeywell 8105 Series 24VAC Heatcraft Blower Control Board IBC-H4C401 Ignition Controls *24 Ignition Control SpecificationsFenwal Triton 2461D Diagnostics Fenwal Triton 2461D Triton 2461D Diagnostic Flash Code Fenw Integrated Blower/Ignition Control *24 Integrated Control SpecificationsUnited Technologies Model United Technologies Model 1097-400-1 Fan On Delay Heat ModeFan Off Delay Induced Draft Blower Specifications Induced Draft Blower *63 Burner Specifications Burners *34 Flame Carryover Problems 11 Inshot Burners Manifold Orifice Specifications Manifold Orifices *13 Contactor Specifications Contactor *278 Main High Limit Switch *52 15 Camstat Main Limit Switch Flame Rollout Switch *55 17 Flame Rollout Switch Pressure Switch *57 Pressure Switch Specifications Pressure Switch Problems Pressure Switches Blocked Intake Blocked Flue What Is Needed for the Tests Terminology Word About the Switch Open Value Word About the Switch Closed ValueProcedure for Checking Pressure Switch 20 Incline Manometer Connection Compressor Specifications on next Compressors *262 RLA LRA Tecumseh Rotary Compressor Specifications Manufacturer TecumsehTop View Side View Tecumseh Reciprocating Compressor Specifications 22 Tecumseh Reciprocating Compressor Manufacturer Copeland Copeland Compressor SpecificationsLayout 24 Copeland Compressor Side View 10 Drier-Filter Specifications Armstrong Part Number Drier-Filters *301 HWC Capillary Tube Specification Tables HWC Capillary Tubes *256 26 43267-001 Capillary Tubes 30 43281-001 Capillary Tubes 12 39102B001 Specifications 34 39102B001 Capillary Tubes Capacitors *271 13 Capacitor Ratings ArmstrongVolts Dual Single 14 Evaporator Blower Motor Specifications 15 Condenser Fan Motor SpecificationsEvaporator Blower Motor Indoor Blower *69 Condenser Fan Motor Outdoor Motor *267 16 Run Capacitor Ratings Capacitors-Run *86Armstrong Rating Fan Blades *268 37 Fan Blades HWC Models 122, 182 & 123 38 Fan Blades HWC Models 242, 302 & 243 Exterior Grill Panels Not Listed in the Parts Lists 39 Exterior Grill Panels Installation Installation and Operation in Extremely Cold Weather Areas HW/HWC Installation and Maintenance Instructions Location Installation Installing With a Wall Sleeve HW/HWC Installation Installing Without a Wall Sleeve HWC Drain Installation Condensate Drain HWC Models Required Clearances for Direct Vent Terminals Removal of Unit from Common Venting System NOx Insert Removal Gas Supply Piping HW/HWC Temperature Rise Minimum Required Surface Area for DisposableFilters Pressure Regulator Adjustments Cooling Section HWC models High Altitude Adjustments U.S. Installa- tionsHigh Altitude Adjustments Canadian Instal- lations Cubic Feet Per Revolution 3600 Heating Installation and Operation in Extremely Cold Weather Areas Accessories HW/HWC Accessory Kit Index Components and accessories. These instructions should Intended as a general guide only, for use by qualifiedPersonnel, and do not supersede any national or local Codes in any way Wall Sleeve Assembly CA-239 Wall Sleeve Kit CA-239 Parts List CA-239 Wall Sleeve Kit Assembly Wall Sleeve Installation Recessed Wall Sleeve Installation Magic-Pak Installation Weather Sealing Wall Sleeve Adaptor Kit Assembly A242-1 Wall Sleeve Adaptor Kit Installing the HW/HWC Unit Attachment to HW/HWC A242-1 Parts List A242-1 Wall Sleeve Adaptor Kit Assembly Installation AssemblyALVR42 Architectural Aluminum Louver Facade Alvr Architectural Aluminum Extended Louver 34961A001 Compressor Vibration Isolator Kit 34961A001 Parts List ALPKT389-2 L.P. Gas Conversion Kit ALPKT389-2 Parts ListALPKT389-2 Orifices AHALT390-1 High Altitude Kit AHALT390-1 Parts ListRegulator Natural Gas Accessories Regulator Propane ATIMR466-1 Parts List ATIMR466-1 Short Cycle Protector Kit 10 ADAPT420-2 Parts List ADAPT420-2 Chassis Conversion Kit 11 Triton Ignition Control Kit Parts List Fenwal Triton Ignition Control Kit TL109 Burner Tray Kit TL109 Burner Tray AMUFFKT494-1 Kit Discharge Muffler Installation AMUFFKT494-1 Discharge Muffler Kit HW-1 HWA-9 HWC123, 183, 243, 303S-1 Parts ListsHWC123, 183, 243, 303H-1 HWC3-A-1 HWC3-A-1 COMPRESSOR-AW501ET-089-A4 HWC182-242A-11 HWC182-242A-11 HWC122-242A-10 Revised HWC122-242A-10 26HWC122A-10 38HWC122A-10 38HWC242A-10 HWC182-9 HWC182-9 HWC242-302-9 HWC242-302-9 HWC-8 REC Stocking Service Level HWC-8cont COMP-ZR28K1-PFV HWC-6/7 HWC-6/7 HWC-5 64HWC302-5A Last letter of the Model # is the Service Level HWC-5cont 64HWC302-5 a Last letter of the Model # is the Service Level HWC-4 HWC-4cont Capacitor 25/5 MFD@370VAC HWC-3 64HWC302-3A Last letter of the Model # is the Service Level HWC-3cont CAP Tube Assy HWC-2 HWC-2cont HWC-1 HWC-1cont Coil Outdoor HW-1 HW-1cont HWA-9 HWA-9cont HWC3-S-1 HWC3-S-1 RELAY-CONDENSER FAN Motor HWC3-H-1 HWC3-H-1 COMPRESSOR-AW501ET-089-A4 Troubleshooting Performance Charge Weights TroubleshootingPerformance Tests Installed Performance Tests Bench Tested Performance Troubleshooting Initial TestingFurther Testing Compressor Checkout Checking Windings Example #1 Example #2 Checking the Thermal Overload Device Troubleshooting Capacitor Testing Magic-Pak HW/HWC Capacitor Checkout Troubleshooting Determining Capacitance MFD Rating with a Test Cord Example Performance Tests Chassis Installed in Unit HWC122 Performance Test Chassis InstalledHWC182 Performance Test Chassis Installed Performance Checkout HWC242 Performance Test Chassis Installed HWC302 Performance Test Chassis Installed 70 80 Ambient Temperature Chassis Bench Test Ambient Temperature Chassis Bench TestHWC Refrigerant Charge Weights Performance Tests Chassis Bench Tested