2.0Control System Requirements

Turndown Method

Input is normally controlled by a motorized butterfly valve in the gas line to the

 

burner.

Regulator Loading Lines

Connect the top diaphragm chambers of the main gas and pilot gas regulators to the

 

duct approximately 10" downstream of the burner. This will allow the regulators to

 

maintain a constant supply pressure to the burner regardless of varying pressures in

 

the duct.

Piloting

Pilot gas flow is adjusted as shown in Figure 6.

Ignition

Ignition voltage should be 6000 VAC.

Check Valve

See Figure 3. At high fire, the gas pressure at the burner inlet is higher than the air pressure, and

 

the check valve is closed. At low fire, gas pressure falls below the air pressure, and the check

 

valve opens, permitting a small amount of air to mix with the gas. This premix at low fire stabilizes

 

the flame and helps distribute the flame evenly down the length of the burner.

wWarning

Do not install any valve or controlling device in the gas line between the burner and the check valve tee, Figure 3. Because this section of the gas line carries a partial pemix at low fire, it is possible under unusual condi- tions for the flame to travel back through the pipe to the tee. Devices in- stalled in this section may be damaged and may melt, releasing gas to the atmosphere and causing fires or explosions.

Pressure Switch Connection See Figure 4 for typical connection of combustion air and circulating fan limit switches.

Limit Controls &Safety Equipment Limit controls and safety equipment should comply with current NFPA Stan- dards* 86 and 86C, and all applicable local codes and/or standards.

*Available from:

 

National Fire Protection Association

American National Standard Inst.

Batterymarch Park

1430 Broadway

Quincy, MA 02269

New York, New York 10018

Figure 3–Check Valve Operation

Figure 4—Pressure Switch Location

 

 

Blower

WARNING!

 

Pressure Switch

 

 

Do Not Install Any Valves Here!

 

P

See Section 2.0

Tube at

Lo Hi Burner Air Tap

Tee

Blower Inlet

 

 

See Figure 7

Process Air

 

 

Gas Inlet

 

 

Manifold

 

 

Check Valve Opens When

Gas Inlet Pressure Is at Low Fire

 

 

P

 

Tube Points

Hi

Lo

Tube Points

Upstream

Circulating Air

Downstream

 

 

 

Pressure Switch

 

4

Eclipse AirHeat v1.0 - Installation Guide No. 140, 11/4/03

 

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Eclipse Combustion TAH, CAH Control System Requirements, Turndown Method, Regulator Loading Lines, Ignition, Check Valve
Page 3 Page 5

CAH, DAH, AH, TAH specifications

Eclipse Combustion is a noteworthy player in the combustion technology sector, particularly renowned for its innovative direct-fired burners, specifically the DAH, TAH, AH, and CAH models. These burners are designed to achieve optimal performance in various industrial applications by providing efficient, reliable, and environmentally sustainable solutions.

One of the main features of Eclipse’s combustion products is their focus on efficiency. The DAH and TAH models incorporate advanced air-fuel mixing technologies, ensuring thorough combustion and minimal emissions. This proficiency enables manufacturers to not only meet stringent environmental regulations but also reap cost savings through improved fuel efficiency.

The AH model stands out for its versatility, catering to a wide range of applications, from thermal oxidizers to industrial ovens. It is engineered with attention to operational flexibility, allowing users to tailor burner operations to specific environmental conditions or production requirements. This adaptability ensures that facilities can maintain optimal performance regardless of changing demands.

Eclipse’s CAH model highlights the company’s commitment to innovation. It features a compact design that integrates easily into existing systems, reducing the need for complex retrofitting. The CAH model is equipped with advanced control systems that allow for real-time monitoring and adjustments. This technology enhances operational reliability and enables maintenance teams to proactively address any issues, thereby reducing downtime.

Safety remains a crucial characteristic across all Eclipse Combustion products. The DAH, TAH, AH, and CAH models are designed with multiple safety features, such as flame monitoring systems and emergency shut-off valves. These features are essential in safeguarding workers and equipment, ensuring that operations can continue smoothly without compromising safety standards.

In addition to performance and safety, Eclipse Combustion prioritizes sustainability. The technologies embedded in the DAH, TAH, AH, and CAH models facilitate the efficient use of fuels, leading to reduced greenhouse gas emissions. As industries around the world strive for greener operations, these burners represent a strategic investment for organizations committed to environmental stewardship.

In summary, Eclipse Combustion's DAH, TAH, AH, and CAH models are characterized by their efficiency, versatility, innovative design, safety features, and commitment to sustainability. These attributes make them a reliable choice for industrial applications seeking to enhance performance while minimizing environmental impact. As global industries continue to evolve, Eclipse Combustion remains at the forefront, delivering advanced solutions that meet the demands of modern combustion technology.
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