Smith Cast Iron Boilers GT Series Multiple Zones w/ Taco Valve Controller Models ZVC403 to ZVC

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GT INSTALLATION AND OPERATION INSTRUCTIONS

Figure 29 - Basic Heating System and Indirect Tank Wiring

Multiple 4 Wire Zone Valves

Figure 30 shows the basic multiple zoned system uses normally closed four (4) wire zone valves. This wiring system is used with the piping shown in Figure 26.

When there is a call for heat the room thermostat closes the circuit to the zone valve motor, thus opening the zone valve. When the zone valve is opened, the end switch closes the circuit between terminals T and C on the Sentry 2100 control. The Sentry 2100 provides power to the primary and secondary pumps via terminal C1. Once these pumps are on, the burner fires.

Once the room thermostat is satisfi ed, it breaks power to the zone valve motor. The end switch opens the circuit between terminals T and C shutting down the pumps and the burner.

Multiple Zones w/ Taco Valve Controller Models ZVC403 to ZVC 406

Figure 31 shows the basic multiple zoned system using normally closed 2, 3 or 4 wire Taco zone valves. This wiring system is used with the piping as shown in Figure 26.

When there is a call for heat the room thermostat closes the circuit between the TT terminals on the Taco zone controller. The controller energizes the appropriate zone valve and closes the circuit between terminals T and C on the Sentry 2100 control.The Sentry 2100 provides power to the primary and secondary pumps via terminal C1.

Once these pumps are on, the burner fires.

Once the room thermostat is satisfi ed, it breaks power to the zone valve motor. The end switch opens the circuit between terminals T and C shutting down the pumps and the burner.

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Contents Gama Energy Star North ELM Street WESTFIELD, MA 01085 TEL 562-9631 FAX 413Boiler Ratings & Capacities ContentsBefore YOU Start Boiler Location Input vs Elevation GraphCombustion AIR General Venting GuidelinesHorizontal Direct Vent Systems Separate Air Intake and Vent Terminals Horizontal Terminal LocationsWall Penetration Detail External Air Intake and Vent Systems Debris Screen Installation Vertical Direct Vent SystemsCondensate Drain Concentric Through the RoofGeneral Plumbing Guidelines Pressure Relief Valve Relief Valve PipingMultiple Boiler Primary Loop Primary Loop PlumbingSecondary Loop Plumbing Low Water Cut Off, LwcoSingle Boiler with Indirect Hot Water Heater Multiple Boiler Installation Multiple Zones Using Circulators Multiple Zones Valves with Bypass Valve Gas Pipe Capacity Equivalent Pipe Length ChartGAS Supply Piping Electrical Wiring Thermostat InstallationMultiple Zones w/ Taco Valve Controller Models ZVC403 to ZVC Multiple 4 Wire Zone Valves GT Installation and Operation Instructions GT Installation and Operation Instructions Boiler Ladder Diagram Boiler Connection Diagram Sentry 2100T Controller Boiler ModulationIndirect Water Heaters Sentry DisplaySetting Sentry 2100T control Recommended SettingsRecommend System Temperatures Outdoor Sensor 10K=140.6 F, 42C Determining Reset Temperature HICalc= 200F, 93C 70F, 21C /70F, 21C Normal Flue Gas Composition Natural Gas Propane Boiler SET UPOperating Instructions Gas Valve Layout, GT-150 Ignition SystemOperational Flow Chart For Your Safety Read Before Operating Boiler Checking & Adjustment Gas Pressure AdjustmentInput Rate Main Burner FlameBoiler Maintenance Wall Hung Conversion Aquastat High LimitTrouble Shooting Temperature isBurner shuts off Before set-pointAir Switch is Open Air Switch is ClosedIndicates that Ignition SequenceTwo Flashes on FenwalThree Flashes on Boiler will not stayCreating a noise Residence. This is not a warranty issue HousingWarranty issue Sentry ControllerGT Installation and Operation Instructions Replacement Parts List Replacement Parts Exploded View Models GT150 and GT200Replacement Parts Exploded View Model GT400 GT Installation and Operation Instructions WESTCAST, INC

GT Series specifications

Smith Cast Iron Boilers GT Series has become a benchmark in the hydronic heating industry, renowned for its exceptional performance, durability, and efficiency. This series is designed to cater to diverse heating needs, making it a popular choice among both residential and commercial applications.

One of the standout features of the GT Series is its robust cast iron construction. The cast iron sections offer superior thermal mass, allowing for better heat retention and distribution. This characteristic ensures that the boiler operates efficiently, maintaining comfortable temperatures even during extreme cold weather conditions. The engineers at Smith have meticulously designed each section to provide maximum strength and longevity, resulting in a boiler that can withstand the test of time.

The GT Series also incorporates advanced combustion technology. It utilizes a high-efficiency burner that optimizes fuel consumption, resulting in lower operating costs for homeowners and businesses alike. The boiler is engineered to accommodate a variety of fuel types, including natural gas and propane, giving users flexibility in their energy choices. This adaptability not only enhances efficiency but also promotes environmental sustainability by allowing for the use of cleaner fuel sources.

Another notable technology featured in the GT Series is the electronic control system. This system simplifies boiler operation and enhances user convenience. The intuitive interface provides real-time feedback and diagnostics, making it easier for technicians to perform maintenance and troubleshoot any issues that may arise. Additionally, the boiler’s modulating operation adjusts the burner output according to the heating demand, further improving efficiency and comfort.

Moreover, the GT Series is designed with user-friendly installation in mind. Its compact footprint allows for easy integration into existing heating systems, minimizing space requirements. Additionally, the boiler is equipped with convenient access points for maintenance, ensuring that servicing is straightforward and can be performed without extensive downtime.

Lastly, the Smith Cast Iron Boilers GT Series is designed to meet stringent safety and performance standards. Featuring multiple safety controls and systems, it provides peace of mind for users. With a commitment to quality, efficiency, and performance, the GT Series stands out as a leading solution for hydronic heating, catering to the evolving needs of today’s energy-conscious consumers.
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