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GT INSTALLATION AND OPERATION INSTRUCTIONS

Install and seal a rain cap over the dormant chimney opening to prevent water from entering the building. Use only ABS, PVCsch.40, CPVC, or AL294C pipe for the air inlet and vent systems as stated previously. Ensure that the air inlet and vent system lengths are within the maximums specified in Table 2.

The debris screens provided with the boiler must be installed in both the air intake and vent terminals. Install the screens in the outer most opening then glue a 1 in, 25 mm, length of pipe into the opening to retain them, Figure 9.

Concentric Air Intake and Vent Terminal GT-150 & 200 Only

If a concentric terminal is used it must be Smith part number GT-82666 or York part number 1CT0303. The concentric terminal must be located at least 24 in, 610 mm, above the normal snow line, Figure 17.The building structure must support the air inlet and vent systems. All roof penetrations must be properly flashed and sealed. A dormant chimney can be used as a chase through which the air intake and vent pipes can be run. All previous instructions and warnings apply.

When terminals from multiple boiler installations exit a roof the following conditions must apply:

If limited to two terminals the horizontal centerline distance must be 4 in, 102 mm or greater than 24 in, 610 mm, to prevent flue gas recirculation. For more than two terminals located along a given plane, the centerline distance between them must be 24 in, 610 mm, Figure 18.

Figure 17 - Concentric Through the Roof

Figure 18 - Multiple Concentric Through the Roof

CONDENSATE DRAIN

WARNING: The condensate siphon must be connected to the boiler per the following instructions or combustion gases will enter the room. This can result in excessive levels of carbon monoxide which can cause severe personal injury or death!

This unit produces water as a byproduct of combustion. Much of this water condenses on the heat exchanger and in the venting system. Condensate must be drained from the boiler into a household drain as shown in Figure 19.

Figure 19 - Condensate Piping

NOTE: Check with your municipality, or local gas company to determine if disposal of untreated combustion condensate is permitted. If not, the condensate will have to be neutralized with lime crystals, marble chips or phosphate chips.

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Smith Cast Iron Boilers GT Series manual Condensate Drain, Concentric Through the Roof
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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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