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GT INSTALLATION AND OPERATION INSTRUCTIONS

BOILER MAINTENANCE

The boiler should be cleaned and inspected once a year, before each heating season.

CAUTION: Servicing, inspection and adjustment must be done by a trained technician in accordance with all applicable local and national codes. Improper servicing or adjustment could damage the boiler!

Controls

Use a soft brush and/or a vacuum cleaner to ensure that the electrical components are free from dust or deposits that would impair the boiler’s performance.

Heat Exchanger Cleaning

Natural Gas - once every two years.

Propane - once per year.

The burner door should be removed so the combustion chamber can be inspected for flue gas blockage, see BURNER REMOVAL & REPLACEMENT below. Once the burner has been removed remove the heat exchanger baffle. Blockage of the heat exchanger will reduce the boiler’s capacity/firing rate and can negatively impact on how smooth and efficiently the burner lights. Vacuum out any loose build-up and clean the heat exchanger surface with an appropriate cleaner for combustion chambers such as Sotin 300. Use a nylon or other non-metallic brush to loosen the sulfate incrustations and any other contaminates. Rinse with water allowing the solution to exit via the condensate drain. This process may warrant removing the insulation disc from the back of the heat exchanger.

Heat Exchanger Flushing

Listen for water fl ow noises that indicate a drop in the boiler water fl ow rate. The boiler and hydronic system may need to be flushed to eliminate hard water scale. A de-scalar such as Fernox DS-40 is recommend.

Burner Removal & Replacement

WARNING: The ceramic door disc on the rear of the burner contains crystalline silica. Wear proper respiration protection when servicing the burner and gently handle the burner and its disc to prevent inhalation of airborne fibers. Crystalline silica fibers have been identified as carcinogenic, or possibly carcinogenic when inhaled.

CAUTION:The burner should not be removed unless there is a problem with it. Careless handling can damage the burner!

1.Close the manual shutoff valve in the gas supply line and turn off electrical power to the boiler.

2.Remove the front and left jacket panels.

3.Disconnect the wires going to the igniter, flame rod, ground rod, blower and gas valve.

4.Carefully disconnect the gas piping at the union, Figure 27.

5.Carefully disconnect the air inlet piping at the valve, Figure 2.

6.Remove the nuts used to attach the burner to the heat exchanger.

7.Carefully slide the burner out of the unit.

8.Inspect the burner for damage or signs of deterioration. Use a brush or vacuum cleaner to remove any debris from the burner ports.

9.DO NOT install a damaged or badly corroded burner, replace it.

10.Inspect the ceramic burner disc for signs of damage or deterioration and replace it if necessary.

11.Inspect the burner door gasket for signs of damage or deterioration and replace it if necessary.

12.Inspect the ignition components for signs of damage or deterioration and replace them if necessary.

13.Reassemble the unit following the removal steps in reverse order.

14.All gas connections MUST be leak tested before putting the boiler into operation.

WARNING: Never use an open flame to test for gas leaks. Always use an approved leak detection method. Failure to comply with this WARNING could result in an explosion!

15.Confi rm proper operation of the boiler and replace the jacket panels.

Condensate System

Ensure that the condensate removal system is clean, sound and working properly.

Vent System

The entire vent system must be thoroughly inspected for any signs of blockage, damage or leaks. Immediately replace any unsound vent system piping. Remove any foreign matter in or near the vent and air inlet terminals that might obstruct them.

Low Water Cutoff

If the system has been equipped with a low water cut-off device, follow the manufacturer’s instructions for cleaning and to confirm proper operation

Relief Valve

The relief valve should vent water when the test lever is lifted. It should not weep or discharge water at normal system pressure. NEVER try to clean or repair the relief valve! If the valve fails replace it!

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Smith Cast Iron Boilers GT Series manual Boiler Maintenance
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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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