Example:

A 80/125mm concentric vent system is planned for a horizontally vented BWC150 which has the following components:

Standard Radius 90° Elbow 5ft Straight Pipe Standard Radius 90° Elbow 1-1/2ft Straight Pipe

45° Elbow

Uncut Terminal Section

The Vent Option #3 column in Table 1.1 describes a horizontal direct vent system using 80/125mm concentric vent pipe. From this column, we see that a BWC150 may have a vent length of up to 55ft The first 90° standard radius elbow is not considered. The length of the terminal section (not including the terminal itself) is approximately 22.1” (1.84ft) installed. From Table 1.4, we see that the equivalent length of the 80/125mm 90° elbow is 8.5ft and that the equivalent length of the 45 degree elbow is 3.0ft. The total equivalent length of the planned venting system is therefore:

5ft (Straight ) + 8.5ft (90 Elbow) + 1.5ft (Straight ) + 3.0ft (45 Elbow) + 1.84ft (Uncut Terminal Section) = 19.84ft.

Since Table 1.1 shows a maximum allowable vent length of 55ft, the planned vent system length is acceptable.

3)Minimum Vent and Air Intake Lengths - Observe the minimum vent lengths shown in Tables 1.1 and 1.5.

4)Permitted Terminals for Horizontal Venting:

•Vent Option 3 - 80/125mm Concentric Vent Terminal (Crown PN 230531)

•Vent Option 4 - 100/150mm Concentric Vent Terminal (Crown PN 230569)

5)Horizontal Vent and Air Intake Terminal Location - Observe the following limitations on the vent terminal location (also see Figure 1.3). When locating a concentric terminal, observe the limitations outlined below for “vent terminals”.

•Vent terminal must be at least 1 foot from any door, window, or gravity inlet into the building.

•The bottom of terminal must be at least 12” above the normal snow line. In no case should it be less than 12” above grade level.

•The bottom of the vent terminal must be at least 7 feet above a public walkway.

•Do not install the vent terminal directly over windows or doors.

•The bottom of the vent terminal must be at least 3 feet above any forced air inlet located within 10 feet.

•A clearance of at least 4 feet horizontally must be maintained between the vent terminal and gas meters, electric meters, regulators, and relief equipment. Do not install vent terminal over this equipment.

•Do not locate the vent terminal under decks or similar structures.

•Top of vent terminal must be at least 5 feet below eves, soffits, or overhangs. Maximum depth of overhang is 3 ft.

•Vent terminal must be at least 6 feet from an inside corner.

•Under certain conditions, water in the flue gas may condense, and possibly freeze, on objects around the vent terminal including on the structure itself. If these objects are subject to damage by flue gas condensate, they should be moved or protected.

•If possible, install the vent and air intake terminals on a wall away from the prevailing wind. Reliable operation of this boiler cannot be guaranteed if these terminals are subjected to winds in excess of 40 mph.

•Terminal must not terminate in areas that might contain combustion air contaminates, such as near swimming pools. See Section IV in the installation manual for more information on possible contaminates.

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Crown Boiler BWC150/225 installation instructions
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BWC150/225 specifications

The Crown Boiler BWC150/225 is a highly efficient and reliable hydronic heating system designed for both residential and commercial applications. Known for its advanced engineering, this boiler delivers exceptional performance while adhering to strict emission standards. Its versatility and durability make it a popular choice among homeowners and professionals alike.

One of the key features of the BWC150/225 model is its dual-fuel capability, allowing the user to operate the boiler on either natural gas or propane. This flexibility not only ensures convenience but also enhances energy efficiency. The boiler is equipped with a powerful 150,000 BTU input capacity for the BWC150 variant and 225,000 BTU for the BWC225, making it capable of heating larger spaces efficiently.

The crown boiler utilizes a fire-tube heat exchanger, which is designed to maximize heat transfer while minimizing the amount of energy lost during operation. This innovative design allows for a higher thermal efficiency rate compared to traditional designs. With an efficiency rating exceeding 90%, the BWC series can significantly lower heating costs, making it an economically sound investment.

Additionally, the BWC model features a fully modulating gas valve that adjusts the heat output based on the demand. This system not only improves comfort by maintaining consistent temperatures but also reduces energy consumption. It is also designed with advanced safety features, including an integrated low-water cutoff and flame rollout protection, ensuring safe operation under various conditions.

Another noteworthy characteristic of the Crown Boiler BWC150/225 is its user-friendly digital control panel. The easy-to-read display provides users with vital information such as temperature settings and system diagnostics, simplifying both operation and maintenance. The compact design of the unit allows for easy installation in tight spaces, making it suitable for various home layouts.

In summary, the Crown Boiler BWC150/225 stands out for its advanced features, energy efficiency, and safety technologies. With its dual-fuel capability, fire-tube heat exchanger, and user-friendly interface, it is an optimal choice for those seeking a robust and reliable heating solution. Whether for residential or commercial purposes, this model offers the performance and convenience that modern users require.
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