GT INSTALLATION AND OPERATION INSTRUCTIONS

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BOILER SET UP

NOTE: Before starting the boiler, turn off the electrical supply going to it. Make sure that gas is available at the gas valve inlet. Open the valves in the hot water return and supply piping. Failure to take these precautions will prevent the boiler from operation properly.

Fill the boiler and all of the radiation with water. Make sure that the system is completely purged of air, see

GENERAL PLUMBING GUIDELINES.

Review these instructions and make sure that the boiler installation complies with ALL of the instructions up to this point.

OPERATING INSTRUCTIONS

The GT boiler employs a pneumatic modulation system. This modulation system increases or decreases the speed of the blower to meet the heating demand. The gas valve pressure regulator senses the air pressure and adjusts the gas flow to ensure correct combustion.

WARNING: Before operating read and under- stand the instructions contained in this manual. Do not attempt to operate this boiler if it has not been installed in accordance with the guidelines set forth in this manual. Read and fully understand the operating instructions in the “For Your Safety Read Before Operating” section of this manual. Failure to comply with this WARNING could result in a fire or explosion causing severe personal injury or death!

Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the electrical supply to the pump. Instead, shut off the gas supply at a location external to the appliance.

Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water.

NOTE: The GT was tested with Natural Gas having a heating value of 1020 BTU per cubic foot. For areas with lower heating values, a combustion test is required to obtain optimum operation.

WARNING: The input Screw MUST NEVER BE ADJUSTED without verifying proper combustion with a calibrated combustion analyzer. Failure to comply with this warning can result in excessive levels of carbon monoxide which can cause severe personal injury or death!

Table 7 contains the range for the CO, CO2 and NOx that should be in a fl ue gas sample of a properly operating boiler at maximum input.

Table 7 - Normal Flue Gas Composition

 

Natural Gas

Propane

Carbon Dioxide CO2 %

8-9.5

9-10.5

Carbon Monoxide CO ppm

25-175

25-175

NOX ppm

10-50

10-50

Note: At maximum fan speed of 240 on the Sentry display

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Smith Cast Iron Boilers GT Series Boiler SET UP, Operating Instructions, Normal Flue Gas Composition Natural Gas Propane

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.