The Direct Vent system requires the installation of an additional pipe to supply combustion air from outdoors directly to the appliance. The air inlet pipe must use one of the specified materials.

The maximum installed length of the air inlet pipe from the appliance to the air inlet cap is 100 equivalent feet (30.48 m) in length. The maximum installed length of the flue pipe from the appliance to the termination cap is 100 equivalent feet (30.48 m) in length. Subtract 5 feet (1.52 m) of equivalent length for each 90° elbow installed in either the flue pipe or the air inlet pipe. Subtract 2 1/2 feet (0.7 m) of equivalent length for each 45° elbow installed in either the flue or the air inlet pipe.

Termination point for the flue products must follow the clearance requirements in the Sidewall Venting Termination sections of the Category IV Venting.

FIG. 23 Horizontal Direct Vent Installations with Sidewall Combustion Air Inlet

SIDEWALL COMBUSTION

AIR INLET

Horizontal Direct Vent systems installed with sidewall terminations for both combustion air and flue products must purchase the termination caps from the appliance manufacturer. The sidewall air inlet cap and sidewall vent cap for flue products are available as a vent kit.

FIG. 24 Sidewall Vent Cap

The part numbers for the required sidewall air inlet cap kit are listed by unit size. The manufacturer, in accordance with CSA requirements, must furnish the sidewall air inlet cap. Each kit includes the special combustion air inlet cap for installation on an exterior sidewall. The sidewall air inlet cap supplied in the kit is sized to provide combustion air for a single appliance only.

TABLE - G

 

 

Flue

 

Air Inlet

 

Sidewall Air

Input

 

Cap

 

Cap

 

Inlet & Flue

Btu/hr

 

Size

 

Size

 

Cap Kit

 

 

 

 

 

 

 

1,500,000

 

6"

 

6"

 

HDK3018

___________

 

__________

 

__________

 

______________

1,700,000

 

7"

 

8"*

 

HDK3019

___________

 

__________

 

__________

 

______________

2,000,000

 

8"

 

8"

 

HDK3020

 

 

 

 

 

 

 

*Piping from the appliance to the air inlet cap may be either 7" or 8" connecting to an 8" sidewall cap provided in the kit.

Location of a Sidewall Air Inlet Cap

Incorrect installation and/or location of the air inlet cap can allow the discharge of flue products to be drawn into the combustion process on the heater. This can result in incomplete combustion and potentially hazardous levels of carbon monoxide in the flue products. This will cause operational problems with the heater and possible spillage of flue products that can cause personal injury, death or property damage.

The termination point of the sidewall air inlet must be installed a minimum of 12 inches (0.30 m) above ground level and above normal levels of snow accumulation.

The point of termination for the sidewall combustion air inlet cap MUST be located a minimum of 3 feet (0.92 m) horizontally and 12 inches (0.30 m) below the point of flue gas termination (vent cap) if it is located within a 10 foot (3.05 m) radius of the flue outlet.

17

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Lochinvar 1, 000 through 2 warranty Sidewall Combustion AIR Inlet, Table G, Location of a Sidewall Air Inlet Cap
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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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