Category IV Venting

A CATEGORY IV POSITIVE

PRESSURE VENTING SYSTEM

FIG. 10 Basic Category IV Venting - Vertical

The flue products in the vent system may be cooled below their dew point and form condensate in the flue. The materials used for a Category IV vent must be resistant to any corrosive damage from flue gas condensate. The flue from a Category IV vent system must have a condensate drain with provisions to properly collect and dispose of any condensate that may occur in the venting system.

Category IV Flue Pipe Materials

Select venting material from the following specified vent distributors:

Heat-Fab Inc. Saf-T CI Vent with AL29-4C stainless steel (Call 1-800-772-0739 for nearest distributor)

Protech Systems Inc. Fas N Seal Vent with AL29-4C stainless steel (Call 1-800-766-3473 for nearest distributor)

Z-FlexZ-Vent with AL29-4C stainless steel (Call 1-800-654-5600 for nearest distributor)

Or other listed Category IV vent systems suitable for a condensing, positive pressure gas fired appliance.

FIG. 11 Basic Category IV Venting - Horizontal

A Category IV venting system for the flue products is required on all models of this appliance. A Category IV venting system operates with a positive pressure in the vent. This positive pressure is generated by the internal combustion air blower which operates the combustion process and also exhausts the flue products from the building. The Category IV flue from this appliance can NOT be combined with the vent from any other appliance. The Category IV flues from multiple appliances can NOT be combined into a common vent. The Category IV flue from this appliance must be a dedicated stack. The flue from this Category IV appliance must have all vent joints and seams sealed gas-tight. A Category IV vent system has specific vent material and installation requirements.

Venting Guidelines for a Category IV Vent

The connection from the appliance vent to the stack or vent termination outside the building MUST be made with listed Category IV vent system and must be direct as possible with no reduction in diameter. The Category IV vent and accessories, such as firestop spacers, thimbles, caps, etc., MUST be installed in accordance with the vent manufacturers instructions. The vent connector and firestop must provide correct spacing to combustible surfaces and seal to the vent connector on the upper and lower sides of each floor or ceiling through which the vent connector passes.

In a typical installation, each appliance must have a dedicated Category IV flue with no other appliance interconnected to any part of the dedicated flue. Each appliance MUST connect to the dedicated flue stack using a properly sealed vent adapter provided by the vent manufacturer. The flues from multiple Intelli-Fin appliances may only be combined when using an engineered vent system incorporating an induced draft fan to ensure that flue products will be properly exhausted from the building at all times. Failure to use a properly sized induced draft fan on a combined vent installation may result in a hazardous condition where flue gases spill into an occupied living space. Consult the induced draft fan manufacturer to size the induced draft fan and to determine the diameter of the common vent pipe required for a combined vent installation.

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Lochinvar 1, 000 warranty Category IV Positive Pressure Venting System, Category IV Venting, Category IV Flue Pipe Materials
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000, 000 through 2, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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