Crown Boiler TWZ125, TWZ200, TWZ090, TWZ065, TWZ175 Minimum Recommended Breeching Chimneysize, 1110

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6)Prior to boiler installation, inspect chimney for obstructions or other defects and correct as required. Clean chimney as necessary.

7)Vent pipe should slope upward from boiler not less than one inch in four feet. No portion of vent pipe should run downward or have sags. Vent pipe must be securely supported.

8)The vertical section of vent pipe coming off the boiler should be as tall as possible, while still maintaining the proper clearance from the horizontal vent connector to combustibles and the proper pitch called for in (7) above.

9)Vent pipe should be installed above the bottom of the chimney to prevent blockage.

10)Vent pipe must be inserted flush with inside face of the chimney liner and the space between vent pipe and chimney sealed tight. A thimble permanently cemented in place can be used to facilitate removal of chimney connector for cleaning.

11)Install the barometric draft regulator in accordance with the regulator manufacturer’s instructions.

12)Secure all joints in the vent connector system with sheet metal screws. This includes the joint between the vent connector and the boiler collar, as well as the barometric draft regulator. Use at least three screws at each joint.

TABLE 2: MINIMUM RECOMMENDED BREECHING AND

CHIMNEYSIZE

Boiler

Min Breeching

Min. Recommended Chimney Size and Height

Model

Dia. (inches)

Round I.D. (in)

Rectangular I.D. (in)

Height (ft)

TWZ065

6

6

8 x 8

15

TWZ075

6

6

8 x 8

15

TWZ100

6

6

8 x 8

15

TWZ090

7

7

8 x 8

15

TWZ125

7

7

8 x 8

15

TWZ150

7

7

8 x 8

15

TWZ120

8

8

8 x 8

15

TWZ175

8

8

8 x 8

15

TWZ200

8

8

8 x 8

15

Power (“Side Wall”) Venting - Important Note

Two problems arise when any oil-fired appliance is power vented:

1.There is sometimes an accelerated rate of soot buildup on the oil burner cad-cell, spinner etc.

2.There is a potential for severe damage to the side of the structure in the event that the boiler operates at a high smoke level. This can happen for many reasons, some of which are out of the control of both the installer and appliance manufacturer.

Crown Boiler Company recommends the use of a chimney to vent the TWZ series boilers. If a power venter must be used, it is the responsibility of the installer and power vent manufacturer to “engineer” the power vent system. CROWN

BOILER COMPANY WILL ASSUME NO RESPONSIBILITY FOR DAMAGE TO SIDING, ETC. FROM A POWER VENTED OIL-FIRED BOILER. THIS APPLIES REGARDLESS OF THE CAUSE OF THE SOOTING.

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Contents TWZ Series Product Description Table of ContentsII Specifications General Specifications III Before InstallingIV Locating the Boiler Frontview Side View For Buildings of Other than Unusually Tight Construction Air for Combustion and VentilationFor Buildings of Unusually Tight Construction Boiler Installed in Confined Space ALL AIR from InsideALL AIR from Outdoors Ventilated Crawl Space and Attic ALL AIR from OUTDOORS, Using 109 VI Venting1110 Minimum Recommended Breeching ChimneysizeStandardPiping VII System Piping1312 1413 Piping for Special SituationsIsolation of Boiler from System 1615 Viii Tankless Heater Piping1716 IX Fuel Line PipingONE-PIPE Lift System 1817TWO-PIPE Gravity Feed System 19182019 WiringSingle Zone Wiring Wiring VariationsWiring DIAGRAM, Single Heating Zone only 2221 XI Start-up and Checkout2223 Boiler Model 24232524 XII Service and Maintenance2625 2726 Avoid Breathing Fiber Particulates and DustKEY # Description QTY. or Quantity PER Boiler or Crown P.N 2827Page Quantity PER Boiler or Crown P.N 30293130 PN980270 Rev609/10

TWZ150, TWZ125, TWZ065, TWZ075, TWZ100 specifications

Crown Boiler, known for its solid and reliable heating solutions, has designed the TWZ series to provide effective heating for both residential and commercial applications. The models in this series—TWZ090, TWZ120, TWZ175, TWZ200, and TWZ100—offer varying capacities and features tailored to meet diverse heating needs.

One of the key features of the TWZ series is its efficiency. These boilers are designed with a cast-iron heat exchanger that maximizes thermal efficiency, allowing for optimal heat transfer. This not only helps in reducing energy consumption but also ensures that the home remains warm and comfortable during the colder months. With an annual fuel utilization efficiency (AFUE) rating that can reach up to 85%, users can expect lower energy bills as well.

Each model in the TWZ series is equipped with a durable and robust construction. The cast iron sections provide increased resistance to wear and tear, making the TWZ series a long-lasting solution for heating needs. This is particularly beneficial for users looking for reliability over time, as the longevity of these boilers reduces the need for frequent replacements.

In terms of technology, the TWZ series features advanced controls that enhance functionality and ease of use. These boilers are compatible with various heating control systems, allowing users to fine-tune their heating setup according to their specific requirements. The inclusion of a flame safeguard system further ensures safety during operation, reducing the risk of malfunctions and improving overall reliability.

The TWZ series is designed for easy installation and maintenance. With options for direct venting or conventional chimney venting, homeowners and installers can choose the most suitable configuration for their properties. Additionally, the maintenance access points on these boilers make routine service checks simple and efficient, ensuring that the boilers remain in optimal condition.

Another important characteristic of the Crown Boiler TWZ series is its quiet operation. Advanced engineering minimizes noise production, making these boilers ideal for residential settings where peace and comfort are valuable.

In conclusion, the Crown Boiler TWZ090, TWZ120, TWZ175, TWZ200, and TWZ100 models offer a compelling combination of efficiency, durability, advanced technology, and user-friendly features. Whether for residential or light commercial use, they represent an excellent choice for anyone seeking reliable heating solutions.
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