Gemini™ Twin-Fuel Gas-Fired Boiler

Gas Pressure Adjustment

Test of Motorized Gas Valves

4.2GAS PIPING

Before making the gas hook-up, make sure the boiler is being supplied only with the fuels shown on the boiler nameplate. The boiler is designed to operate on vaporized natural gas and propane only. Do not use any type of liquid fuel. Do not attempt to fuel the boiler with MAPP gas, sewage gas, coal gas, or other fuels.

Gas train connection sizes are shown in the Gas Train Connection table on the previous page for the different models available.

The boiler shall be installed such that the gas ignition system components are protected from water (drip- ping, spraying, rain, etc.) during appliance operation and service (circulator replacement, control replace- ment, etc.).

The two gas pressure regulators supplied with the boiler are set during a factory fire-test to provide the proper pressure to the main burner: 6 inches W.C. in- let pressure to the regulators for both natural gas and propane.

The gas train components are designed to handle a maximum inlet pressure of 14 inches W.C.(1/2 psig). If the available gas pressure exceeds 14 inches W.C. on either the natural gas or propane supply a suitable intermediate gas pressure regulator of the "lock up" type must be provided to reduce the pressure to less than 14 inches W.C. All boilers are designed to oper- ate at rated input with a minimum inlet pressure of 6 inches W.C. with natural gas, 6 inches W.C. with LP gas.

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natural gas supply

remote gas shutoff

union

(not supplied)

 

drip leg

shutoff

(on boiler)

 

propane

shutoff

supply

(on boiler)

 

remote gas shutoff

union

(not supplied)

 

drip leg

 

Figure 4-2 Gas Supply Piping

(Refer to table above for connection sizes.)

Install a sediment trap (drip leg) and a union connec- tion ahead of the primary manual shutoff valves on the boiler as shown in the figure above.

All gas piping must be installed in accordance with National Fuel Gas Code, ANSI Z223.1, latest edition, and any other local codes which may apply; in Canada gas piping must be installed in accordance with CAN- B 149.

General Warning

Warning! All threaded connections must be made us- ing a pipe compound that is resistant to the action of liquefied petroleum gases. Do not use Teflon￿ tape on gas line threads.

The boiler and all gas piping connections must be pressure tested and must be checked for leaks before being placed into service. Test with compressed air or gas if possible.

The boiler must be disconnected at both boiler manual

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Patterson-Kelley TBIG-03 owner manual Gas Pressure Adjustment Test of Motorized Gas Valves
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TBIG-03 specifications

The Patterson-Kelley TBIG-03 is a cutting-edge boiler designed for commercial and industrial heating applications. Known for its robust construction and high efficiency, this model is popular among facility managers and engineers who prioritize reliability and performance.

One of the standout features of the TBIG-03 is its ability to operate at high efficiencies exceeding 90%. This efficiency translates into significant fuel savings and reduced greenhouse gas emissions, making it an environmentally friendly choice for businesses looking to minimize their carbon footprint. The boiler utilizes advanced condensing technology, allowing it to capture and recycle heat from flue gases that would otherwise be lost.

The TBIG-03 is equipped with a reliable control system that optimizes performance and enhances user control. The integrated digital display allows operators to monitor various parameters in real-time, ensuring that the system operates within optimal ranges. This not only improves the boiler's efficiency but also extends its lifespan by preventing unnecessary wear and tear.

Durability is another hallmark of the TBIG-03. Constructed with high-quality materials, including a stainless steel heat exchanger, this boiler is built to withstand the rigors of continuous operation. The heat exchanger is designed to facilitate quick heat transfer, further contributing to the unit’s efficiency and reliability.

Ease of maintenance is also a significant consideration in the design of the TBIG-03. With readily accessible components, service technicians can perform routine inspections and repair work with minimal downtime. This is a crucial factor for commercial operations, where system reliability is paramount.

Moreover, the TBIG-03 supports a variety of fuel options, including natural gas and propane, increasing its versatility across different applications. This adaptability allows facilities to choose the most cost-effective and resource-efficient fuel source available.

Overall, the Patterson-Kelley TBIG-03 stands out in the market due to its high efficiency, durability, and ease of use. Whether for heating large commercial spaces or industrial processes, this boiler meets the needs of modern enterprises seeking reliable and sustainable heating solutions. Its advanced features and technologies make it a top choice for efficiency-driven facility management.
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