VI. Electrical

DANGER

Positively assure all electrical connections are unpowered before attempting installation or service of electrical components or connections of the boiler or building. Lock out all electrical boxes with padlock once power is turned off.

WARNING

Failure to properly wire electrical connections to the boiler may result in serious physical harm.

Electrical power may be from more than one source. Make sure all power is off before attempting any electrical work.

Each boiler must be protected with a properly sized over-current device.

Never jump out or make inoperative any safety or operating controls.

The wiring diagrams contained in this manual are for reference purposes only. Each boiler is shipped with a wiring diagram attached to the front door. Refer to this diagram and the wiring diagram of any controls used with the boiler. Read, understand and follow all wiring instructions supplied with the controls.

A.General. Install wiring and electrically ground boiler in accordance with authority having jurisdiction or, in the absence of such requirements, follow the National Electrical Code, NFPA 70, and/or CSA C22.1 Electrical Code.

B.A separate electrical circuit must be run from the main electrical service with an over-current device/disconnect in the circuit. A service switch is recommended and may be required by some local jurisdictions. Install the service switch in the line voltage “Hot” leg of the power supply. Locate the

service switch such that the boiler can be shut-off without exposing personnel to danger in the event of an emergency. Connect the main power supply and ground to the three (3) boiler wires (black, white and green) located in the junction box at the inside top of the boiler jacket. If a low water cutoff is to be used, connect the low water cutoff so that all 120V power to boiler is interrupted if the low water cutoff’s switch opens.

C.Refer to Figures 14 and 15 for details on the internal boiler wiring.

NOTICE

This boiler is equipped with a high water temperature limit located inside the internal wiring of the boiler. This limit provides boiler shutdown in the event the boiler water temperature exceeds the set point of the limit control. Certain Local Codes require an additional water temperature limit. In addition, certain types of systems may operate at temperatures below the minimum set point of the limit contained in the boiler.

If this occurs, install an additional water temperature limit (Honeywell L4006 Aquastat) located in the system piping as shown in the Water Piping and Trim Section of this manual. Wire as indicated in the Electrical Section of this manual.

NOTICE

All wire, wire nuts, controls etc. are installer supplied unless otherwise noted.

28

Page 27 Page 29
Page 28
Image 28
Burnham PVG manual VI. Electrical
Page 27 Page 29

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.
Top Page Image Contents