Figure 25: Sequence of Operation

I.Sequence of Operation. See Figure 25. If boiler fails to operate properly, see Troubleshooting Tree in Section IX: Service.

J.Check pilot burner flame. See Figure 27. Flame should be steady, medium hard blue enveloping 3/8 to ½ inch of sensing probe.

K.Check main burner flame. See Figures 26. Flame should have clearly defined inner cone with no yellow tipping. Orange-yellow streaks should not be confused

44with true yellow tipping.

Figure 26: 1 Inch Main Burner flame

Figure 27: Pilot Burner Flame

L. Check thermostat operation. Raise and lower temperature setting to start and stop boiler operation.

M.Check ignition control module shut-off. Disconnect pilot lead wires from gas valve. If burners do not shutdown, determine cause of malfunction. Replace necessary items and check operation.

N.Check low water cutoff (if so equipped).

1.Adjust thermostat to highest setting.

2.With boiler operating, open drain valve and slowly drain boiler.

3.Main burners and pilot burner will extinguish and blower will stop when water level drops below low water cutoff probe. Verify limit, thermostat or other controls have not shut off boiler.

4.Adjust thermostat to lowest setting. Refill boiler.

O.Check limit.

1.Adjust thermostat to highest setting.

2.Observe temperature gauge. When temperature is indicated, adjust limit to setting below observed

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Burnham PVG manual Sequence of Operation, Check limit
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PVG specifications

Burnham PVG, an innovative leader in the heating industry, presents a range of high-efficiency gas boilers that are designed specifically for residential applications. Burnham has established a solid reputation for producing reliable and durable heating solutions, with the PVG series exemplifying their commitment to quality and performance.

One of the standout features of the Burnham PVG is its advanced stainless steel heat exchanger. This design not only ensures superior heat transfer but also enhances durability and resistance to corrosion compared to traditional cast iron counterparts. The use of stainless steel contributes to the longevity of the system, allowing homeowners to enjoy efficient heating for years with less risk of breakdown.

The PVG series incorporates cutting-edge modulating technology, which adjusts the boiler’s output to match the heating demand. This modulating feature allows for more precise temperature control, optimizing energy consumption and minimizing fuel costs. Unlike conventional boilers that operate at a fixed output, the ability to modulate enables the PVG to deliver precisely the right amount of energy when needed, thus enhancing overall system efficiency.

In addition to its efficiency and performance capabilities, the Burnham PVG is designed with ease of installation and maintenance in mind. The compact design enables versatile installation options, even in tight spaces or retrofit applications. Furthermore, the accessible panel layout simplifies service and maintenance tasks, allowing HVAC professionals to perform routine checks and repairs with ease.

The PVG series also emphasizes user-friendly operations, featuring intuitive controls that allow for straightforward adjustments and monitoring. With options for direct vent and conventional venting systems, homeowners can select the best installation method for their specific needs and living environment.

Additionally, the Burnham PVG aligns with environmental considerations by meeting stringent emissions standards, contributing to reduced greenhouse gas outputs. With its energy-efficient operation and commitment to sustainability, the PVG series represents a forward-thinking choice for those looking to reduce their carbon footprint while enhancing home comfort.

In summary, Burnham PVG is characterized by its durable stainless steel construction, modulating technology, compact design, user-friendly controls, and eco-conscious performance. This series exemplifies what modern residential heating solutions should aspire to achieve: efficiency, reliability, and sustainability, making it an excellent choice for intelligent energy management in the home.
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