Crown Boiler TWZ175, TWZ200, TWZ090, TWZ125, TWZ065, TWZ150, TWZ100, TWZ120 IV Locating the Boiler

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3)Make sure that the boiler is correctly sized:

•For heating systems employing convection radiation (baseboard or radiators) use an industry accepted sizing method such as the I=B=R Heat Loss Calculation Guide (Pub. #H21 or #H22) published by the Hydronics Institute in Berkeley Heights, NJ.

•For new radiant heating systems refer to the radiant tubing manufacturer’s boiler sizing guidelines.

•For systems including a Crown Mega-Stor indirect water heater, size the boiler to have either the DOE Heating Capacity required for the Mega-Stor or the net rating required for the heating system, whichever results in the larger boiler.

•For systems that incorporate other indirect water heaters, refer to the indirect water heater manufacturer’s instructions for boiler output requirements.

4)In some cases, boilers installed at altitudes above 2000ft may require a different burner configuration from that at sea level. Consult the local Crown representative for more information.

IV Locating the Boiler

1)Clearances:

•Observe the minimum clearances shown below. Except as noted, these clearances apply to all combustible construction, as well as noncombustible walls, ceilings and doors. Also see Figure 2.

Front – 24”

Left Side – 6”

Right Side – 6”

Rear – 6”

Top – 6”

Single Wall Chimney Connector (to combustible construction) - 18”

•A 24” service clearance from the jacket is recommended from the top of the boiler. This clearance may be reduced to that shown above; however, servicing the boiler will become increasingly difficult as this clearance is reduced.

2)If listed Type L vent is used, follow vent pipe manufacturer recommendations for minimum clearances.

3)Do not install this boiler directly on a combustible surface. Where it is desired to install the TWZ over a non-carpeted combustible surface, install the boiler on the base shown in Figure 3.

4)Do not install this boiler in a location where gasoline or other flammable vapors or liquids will be stored or used. Do not install this boiler in an area where large amounts of airborne dust will be present, such as a workshop.

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Contents TWZ Series II Specifications Table of ContentsProduct Description III Before Installing General SpecificationsIV Locating the Boiler Frontview Side View Air for Combustion and Ventilation For Buildings of Other than Unusually Tight ConstructionBoiler Installed in Confined Space ALL AIR from Inside For Buildings of Unusually Tight ConstructionALL AIR from Outdoors Ventilated Crawl Space and Attic ALL AIR from OUTDOORS, Using VI Venting 109Minimum Recommended Breeching Chimneysize 1110VII System Piping StandardPiping1312 Piping for Special Situations 1413Isolation of Boiler from System Viii Tankless Heater Piping 1615IX Fuel Line Piping 17161817 ONE-PIPE Lift System1918 TWO-PIPE Gravity Feed SystemWiring Single Zone WiringWiring Variations 2019Wiring DIAGRAM, Single Heating Zone only XI Start-up and Checkout 22212223 2423 Boiler ModelXII Service and Maintenance 25242625 Avoid Breathing Fiber Particulates and Dust 27262827 KEY # Description QTY. or Quantity PER Boiler or Crown P.NPage 3029 Quantity PER Boiler or Crown P.N3130 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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