SECTION 10: COMMISSIONING

Figure 17: Dungs Gas Valve

10.4 Gas Valves

Dungs Combination Gas Valve

All model 015 - 030 gas-fired burners operate as direct main flame ignition and have no separate start gas train. All other models operate with a first stage start gas flame supplied from a start gas train containing a start gas pressure regulator and two safety shut-off valves, for all gas types.

The main gas is released at the second stage, and the combination main gas valve block contains a main burner pressure regulator and two safety shut- off valves, for all gas types. See Page 37, Figure 17. For high/low or modulating burners, the Dungs gas valve has extra features because it is an air/gas ratio control valve. Please refer to the manufacturer’s instructions for setting the controls.

10.4.1 Start Gas Valves

appliances and need no further adjustment. When replacing a gas valve, ensure that this device is set in the fully open position by releasing the locking screw and turning the "V MAX" fully counter- clockwise towards the "+" and then retightening the locking screw.

10.4.4 Rate of Opening

The slow opening adjustment can be seen on Page 37, Figure 17. This device is a hydraulic damper which slows down the rate of opening of the second main gas valve to give a smooth main gas ignition. This is preset at the factory at the slowest setting and will need no further adjustment. If a new valve is fitted, then remove the plastic screw on top and with a small screwdriver turn the "V Start" screw fully clockwise towards the "-" and refit the plastic cover.

Where fitted, the start gas valve train is fitted with a pressure regulator and two start gas safety shut off valves. The start gas regulator is used to adjust the burner firing rate during the start gas phase of these models.

10.4.2 Main Gas Valves

See Page 37, Figure 17 for the position of the burner pressure regulator. This must be used to set the burner pressure indicated in the data tables in Section 4.

For high/low or modulating burners, the Dungs gas valve has extra features because it is an air/gas ratio control valve. Please refer to the manufacturer’s instructions for setting the controls.

10.4.3 Throughput Adjuster

These valves have a throughput adjuster fitted to the second main gas valve. See Page 37, Figure 17. This will be factory set at fully open on new

10.5 Combustion Testing (all models)

Combustion quality must be tested to prove correct heater operation. Incorrect results will indicate faults with the installation or appliance.

Combustion testing must be carried out with all covers in place. The flue gas is sampled in the flue, within 1 meter of the heater. The values of CO2 should be between 9.5% and 10.0% for natural gas and 11% for LPG, depending upon the model.

The CO will be up to 80 ppm (0.008%) dry, air free, depending upon the model. Temperature rise of the flue gases above ambient should be approximately 160°C to 180°C. Seal the test hole in the flue after testing.

To alter combustion performance, open/close the combustion air damper to reduce or increase these values. Once adjusted to the optimum combustion setting, lock the air damper into position. Repeat the steps in Section 10.2.6.

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Roberts Gorden POP-ECA/PGP-ECA 015 to 0100 Start Gas Valves, Rate of Opening, Main Gas Valves, Throughput Adjuster
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POP-ECA/PGP-ECA 015 to 0100 specifications

The Roberts Gordon POP-ECA/PGP-ECA 015 to 0100 series represents a significant advancement in the realm of heating technologies, particularly in industrial and commercial applications. These innovative units are designed to provide efficient, reliable heating solutions tailored to meet the diverse needs of various environments.

Main features of the POP-ECA/PGP-ECA series include their high-performance heating capabilities, which allow for rapid temperature rise and consistent heating throughout a space. This efficiency is critical for industries that require precise temperature control for their processes. The units are engineered to emit heat evenly, reducing hot spots and ensuring that the entire area is warmed effectively.

One of the standout technologies incorporated into these heaters is their advanced combustion system. This system optimizes fuel usage, enhancing energy efficiency while minimizing emissions. This aspect is particularly vital in today’s environmentally conscious world, where businesses seek to reduce their carbon footprint. The designs are compliant with current environmental regulations, making them suitable for use in various operational settings.

The POP-ECA/PGP-ECA series also boasts a variety of innovative features aimed at user convenience. Integrated control systems allow for easy adjustments and monitoring, enabling operators to maintain ideal temperature settings with minimal effort. Additionally, many units in the series offer flexible mounting options, allowing for vertical or horizontal installation to suit different space constraints and layout requirements.

Characteristics of the POP-ECA/PGP-ECA series also include robust construction, ensuring durability and longevity even in the most demanding environments. The materials used are resistant to corrosion and wear, providing a reliable heating solution that requires minimal maintenance over time. Moreover, the compact design of the units means that they can be installed in tight spaces without sacrificing performance.

Overall, the Roberts Gordon POP-ECA/PGP-ECA 015 to 0100 series stands as a testament to cutting-edge engineering in heating technology. With their combination of efficiency, environmentally conscious design, and user-friendly features, these units are an excellent choice for a wide range of industrial and commercial heating applications. They exemplify the future of heating solutions, prioritizing performance while remaining mindful of energy consumption and environmental impact.
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