GT INSTALLATION AND OPERATION INSTRUCTIONS

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Aquastat High Limit

The aquastat high limit controls the maximum water temperature in the boiler. If the water temperature reaches the set temperature before the demand for heat has been met, the aquastat high limit should shut the burners off. The outlet water temperature should never exceed 220°F, 104°C. If the aquastat high limit fails to function properly replace it.

WALL HUNG CONVERSION

This boiler is certified to be either mounted on the floor as supplied, or mounted on a wall.

For wall mounting, perform the following steps.

1.Ensure that the desired location provides adequate room for the clearance, see Table 1, venting, and servicing.

2.Remove the right stainless steel panel, and discard.

3.You will see that underneath the panel, the boiler frame has mounting holes, designed for wall attachment.

4.The boiler must be mounted so the lag bolts enter the studs of the wall. If this is not possible use a 3/4" thick of plywood approximately 24 in, 610 mm, wide by 36 in, 914 mm, high.

5.Install two #14-3" lag bolts three quarters of the way into the surface, to the height you desire for mounting.

6.Lift the boiler onto the wall, and tighten the top lag bolts.

7.Once the unit is level, install the bottom two #14-3" lag bolts.

8.Remove the Air Inlet Pipe assembly and Metering elbow from the gas valve-venturi assembly, Figure 45.

Figure 45 - Air Inlet Pipe Removal

9.Remove the two screws attaching the gas valve- venturi assembly to the side of the blower and rotate the valve 90° so the 1/2" threaded connection is pointing down, Figure 46. Pay close attention to how the cork gasket is aligned.

Figure 46 - Gas Valve Rotation

NEW LOCATIONS

FOR SCREWS

out

out

 

REMOVE SCREWS

1/2 IN THREADED

 

AND ROTATE 90°

 

CONNECTION

 

RE-INSTALL SCREWS

 

 

 

IN NEW LOCATIONS

 

 

 

10.Reattach the gas valve-venturi assembly to the side of the blower making sure the gasket is correctly orientated.

11.Re-install the Air Inlet Pipe assembly and Metering elbow from the gas valve-venturi assembly, in the vertical position, Figure 47.

Figure 47 - Air Inlet Pipe Installation

12.Install the gas line as per Figure 48 and follow the instructions in the GAS PIPING section of this manual.

Figure 48 - Gas Supply Piping

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Smith Cast Iron Boilers GT Series manual Wall Hung Conversion, Aquastat High Limit
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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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