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Smith Cast Iron Boilers GT Series manual Page, Gt Installation And Operation Instructions

Models: GT Series

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GT INSTALLATION AND OPERATION INSTRUCTIONS

The following are the thermister curves for diagnosing the water and outdoor air sensors.

1.Measure the resistance of the thermister when disconnected.

2.Using the appropriate chart, ﬁnd the resistance and move vertically for the water probe or horizontally for the air probe until the line is intersected.

3.Move 90 degrees to the corresponding temperature.

4.If the temperature is plus or minus 10°F, - 12 °C, then the probe is operating correctly.

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Smith Cast Iron Boilers GT Series manual Page, Gt Installation And Operation Instructions

Contents

INSTALLATION, OPERATING AND MAINTENANCE MANUAL MODEL GT SERIESNatural Or Propane 150,000 to 399,000 Btuh Input gama ENERGY STARCONTENTS BEFORE YOU STARTBOILER RATINGS & CAPACITIES High Altitude OperationBOILER LOCATION Figure 1- Input vs Elevation Graph3.Un-pressurized,and gravity feed heating systems 4.Heating systems with very low pressures or ﬂowCOMBUSTION AIR GENERAL VENTING GUIDELINESService Table 1 - ClearancesHORIZONTAL DIRECT VENT SYSTEMS Figure 3- Vent Pipe To Boiler AttachmentTable 2 - Vent & Air Intake System Sizing NumberSeparate Air Intake and Vent Terminals Figure 5 - Horizontal Terminal LocationsFigure 6 - Wall Penetration Detail Figure 8 - Below Grade InstallationFigure 7 - Air Intake & Vent Pipe Attachment Figure 9 - External Air Intake and Vent Systems Figure 10 - Debris Screen InstallationFigure 12 - Vertical Concentric Terminal Location VERTICAL DIRECT VENT SYSTEMS Figure 14 - Debris Screen InstallationFigure 16 - Two Pipe Using Dormant Chimney Figure 13 - Wall Penetration DetailCONDENSATE DRAIN Figure 17 - Concentric Through the RoofFigure 18 - Multiple Concentric Through the Roof Figure 19 - Condensate PipingGENERAL PLUMBING GUIDELINES Pressure Relief Valve Figure 20 - Relief Valve PipingMULTIPLE BOILER PRIMARY LOOP PRIMARY LOOP PLUMBINGSECONDARY LOOP PLUMBING Low Water Cut Off, LWCOPage Figure 24 - Multiple Boiler Installation Figure 25 - Multiple Zones Using Circulators Figure 26 - Multiple Zones Valves with Bypass Valve GAS SUPPLY PIPING Table 5 - Equivalent Pipe Length ChartFigure 27 - Gas Supply Piping Table 4 - Gas Pipe CapacityThermostat Installation ELECTRICAL WIRINGFigure 28 - Basic Heating System Wiring Multiple 4 Wire Zone Valves Figure 30 - Multiple 4 Wire Zone Valves GT INSTALLATION AND OPERATION INSTRUCTIONSPage GT INSTALLATION AND OPERATION INSTRUCTIONS PageMultiple Zone Pump Controller Models Taco SR504, Argo ARM 861 SeriesFigure 33 - Boiler Ladder Diagram GT INSTALLATION AND OPERATION INSTRUCTIONSPage Figure 34 - Boiler Connection Diagram GT INSTALLATION AND OPERATION INSTRUCTIONSPage SENTRY 2100T CONTROLLER Figure 35 - Conventional Mode Operation ChartFigure 36 - Reset Mode Operation Chart Figure 37 - 2100T Display ScreenFigure 38 - Input Conversion Chart Setting Sentry 2100T controlRecommended Settings Table 6 - Recommend System TemperaturesFigures 39 - Reset Curve For Res = 85 F, 29C Figures 40 - Reset Curve For Res = 70 F, 21CDetermining Reset Temperature HICalc =200F, 93C - 70F, 21C /70F, 21CBOILER SET UP OPERATING INSTRUCTIONSTable 7 - Normal Flue Gas Composition Natural GasManifold Pressure Line Pressure Input Screw Figure 41 - Gas Valve Layout, GT-150Figure 42 - Gas Valve Layout, GT-400 Ignition SystemFigure 43 - Operational Flow Chart OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATINGTO TURN OFF GAS TO APPLIANCE BOILER CHECKING & ADJUSTMENT Gas Pressure AdjustmentFigure 44 - Burner Flame Thermostat Adjustment Input RateBOILER MAINTENANCE Heat Exchanger CleaningBurner Removal & Replacement ControlsWALL HUNG CONVERSION Figure 47 - Air Inlet Pipe InstallationAquastat High Limit Figure 45 - Air Inlet Pipe RemovalTROUBLE SHOOTING ProblemDetected Problem SolutionAir Switch is Open Air Switch is ClosedIndicates that the Indicates that theIgnition Sequence not activated whenburner light is on Fan is on andresidence. This is not a warranty issue the housingwarranty issue Sentry ControllerGT INSTALLATION AND OPERATION INSTRUCTIONS PageREPLACEMENT PARTS LIST Part NumberDescription Part NumberREPLACEMENT PARTS LIST Part NumberDescription Part NumberGT INSTALLATION AND OPERATION INSTRUCTIONS PageWESTCAST, INC