Sterling TF-300, TF-400, TF-150, TF-200, TF-350, TF-175, TF-250, TF-125, GF-400, GF-250, GF-150 Venting

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VENTING (continued)

Figure 6 - Vertically Vented Tubular Unit Heater – Category I

Figure 7 - Horizontally Vented Tubular Unit Heater – Category III

ADDITIONAL REQUIREMENT FOR CANADIAN INSTALLATIONS

REFER TO SPECIFICATION TABLE AND INSTALLATION MANUAL FOR PROPER USAGE. * The following instructions apply to Canadian installations in addition to installation and operating instructions.

1.Installation must conform with local building codes, or in the absence of local codes, with current CGA B149.1, Installation Codes for Natural Gas Burning Appliances and Equipment, or CGA B149.2, Installation Codes for Propane Gas Burning Appliances and Equipment.

2.Any reference to U. S. standards or codes in these instructions are to be ignored, and the applicable Canadian standards or codes applied

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Contents Tubular GAS Fired Direct Spark Propeller Unit Heaters Receiving InstructionsTable of Contents DescriptionGeneral Safety Information Dimensional Drawing Tubular Propeller Unit Heater Installation Installation Gas Pipe Size GAS PipingPipe Sizing Pipe Installation Gas Piping RequirementsElectrical Connections Low-voltage T Thermostat Wiring Single Stage Two StageThermostat Wiring and Location Electrical Connections Tubular Unit Sizes with Optional 2 Stage Ignition Venting Categories VentingVertically Vented Unit Heaters Category Horizontally Vented Unit Heaters Category Structure Termination LocationsVenting Venting Venting Shut Down OperationExplanation of Controls See Figure Main Burner Oriﬁce Schedule Primary AIR Shutter AdjustmentGAS Input Rate Tubular Unit Heater High Altitude Deration Natural GAS Propane LP GASTubular Propeller Troubleshooting Guide Symptoms Possible Causes Corrective ActionRealign power ventor wheel Check for continuous 115v on terminal LED Status Indicates CHECK/REPAIR Never over oil the motor or premature failure may occur MaintenancePeriodic Service Limited Warranty Power Vented Tubular Propeller Unit HeatersHeat Exchanger Assembly Propeller PartsPower Venter Assembly Turbulator/High Limit LocationPRE-INSPECTION Information With power and gas offWith power and gas on General