User ManualTable of ContentsSECTION 1: Heater Safety2SECTION 12: User Instructions28SECTION 2: Installer Responsibility212.1 User Instructions282.1 Clearances to Combustibles212.2 Heater Operation282.2 Corrosive Chemicals212.3 Common User Controls282.3 National Standards and Applicable Codes212.4 Lighting Instructions28SECTION 3: Critical Considerations312.5 Simple Fault Finding293.1 Basic Information3SECTION 13: Servicing303.2 Location and Suspension313.1 Servicing Instructions303.3 Minimum Required Installation Clearances313.2 Burner Maintenance303.4 Clearances to Combustibles313.3 Fan/Motor Assembly Maintenance303.5 Ventilation313.4 Heat Exchanger Maintenance303.6 Gas Supply313.5 Gas Control Valve Maintenance303.7 Electrical Supply313.6 Flue Fan303.8 Flue3SECTION 4: Specifications514.1 General314.1 CTUA514.2 Burner Conversion314.2 CTUB, CTUC and CTUD614.3 Gas Valves314.3 General Technical Data Table7SECTION 15: Troubleshooting324.4 Technical Data Table815.1 General32SECTION 5: Heater Installation95.1 General9Systems335.2 Handling915.3 Troubleshooting for Flame Supervision System345.3 Shelf Mounting and Suspension915.4 Troubleshooting for Solenoid Valves34SECTION 6: Flue Installation10SECTION 16: Removal and Replacement Parts356.1 Flue Installation1016.1 Gas Valve356.2 Type C12, C32 & C62 Appliance1016.2 Burner Compartment366.3 Type B22 Appliance1016.3 Ignition Electrode and Flame Probe37SECTION 7: Air Supply1216.4 Flue Fan387.1 Room Sealed Installation1216.5 Pressure Switch397.2 Open Flued Installation1216.6 Ignition Control407.3 Building Ventilation1216.7 CTUA Axial Fan/Guard/Motor Assembly407.4 Isolated Equipment Rooms12SECTION 8: Optional Heater Configurations13Assembly4016.9 Fan Data41Heaters13SECTION 9: Gas Piping149.1 Connections14SECTION 10: Wiring and Electrical Information1510.1 Electrical Supply1510.2 Remote Controls1510.3 CTUA Wiring Diagram (Models 22-60)1610.4 CTUA Wiring Diagram (Models 75-115)1710.5 CTUB/C Wiring Diagram (Models 22-40)1810.6 CTUB/C Wiring Diagram (Models 50-60)1910.7 CTUB/C Wiring Diagram (Models 75-115)2010.8 CTUD Wiring Diagram (Models 22-60)2110.9 CTUD Wiring Diagram (Models 75-115)22Optional Thermostat/Time Switch23SECTION 11: Commissioning2411.1 Pre-Commission Checks2411.2 Gas Supply2411.3 Mechanical Checks2411.4 Begin Commissioning2411.5 Combustion Testing2611.6 Turning Off the Heater2611.7 External Controls2711.8 Complete the Commissioning2711.9 Instruction to the User27Combustibles4Figure 2: Suspension Methods9Figure 3: Flue and Roof Detail10Figure 4: Air Intake Terminal Cover10Type B22 Appliance11Type C12 C32 & C62 Appliances11Figure 7: Heaters Installed in Isolated Equipment Rooms12Figure 8: Ducting13Connector14Figure 10: Automatic Burner Control Box Sequence25Figure 11: Gas Valve for Heater (Models 22 - 60)25Figure 12: Gas Valve for Heater (Models 75 - 115)26Figure 13: Heater Operating Sequence28Figure 14: Centrifugal Fan Orientation41Size: 2.46 MBPages: 51Language: EnglishOpen manual