Location of a Sidewall Air Inlet Cap

Installation, location and clearance requirements for the sidewall air inlet cap in an Intelli-Vent application are the same as the installation, location and clearance requirements for the sidewall air inlet cap in the Horizontal Direct Vent section of the venting instructions.

The sidewall combustion air inlet cap and the rooftop flue gas outlet are located in different pressure zones in an Intelli-Vent system.

Combustion air supplied from outdoors must be free of contaminants (see Combustion and Ventilation Air). To prevent recirculation of flue products in to the combustion air inlet, follow all instructions in this section.

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.

HORIZONTAL INTELLI-VENT WITH

VERTICAL COMBUSTION AIR

The Intelli-Vent system requires the installation of an additional pipe to supply combustion air from outdoors directly to the appliance.

In cold climates, the use of type “B” double wall vent pipe or an insulated single wall pipe is recommended to prevent moisture in the cool incoming air from condensing and leaking from the inlet pipe.

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

CAUTION￿

Appliances that are shut down or will not operate may experience freezing due to convective airflow in the air inlet pipe connected to the appliance.

The flue and air inlet duct sizes for a Horizontal Intelli-Vent Installation with Rooftop Combustion Air Inlet are listed by unit size. The sidewall vent cap must be purchased from the appliance manufacturer as a vent kit.

Intelli-Vent systems are installed with a Category IV flue and a separate combustion air pipe to the outdoors. The Horizontal Intelli-Vent system terminates the flue at the sidewall and air inlet at the rooftop. The flue outlet and combustion air intake terminate in different pressure zones.

12" MIN.

FIG. 29 Horizontal Intelli-Vent Installation - Rooftop Combustion Air Inlet

TABLE - I

 

 

 

 

Air Inlet

 

Sidewall

Input

 

Flue

 

Pipe

 

Vent

Btu/hr

 

Size

 

Size

 

Cap Kit

 

 

 

 

 

 

 

1,500,000

 

6"

 

6"

 

SVK3026

___________

 

___________

 

___________

 

____________

1,700,000

 

7"

 

7"*

 

SVK3027

___________

 

___________

 

___________

 

____________

2,000,000

 

8"

 

8"

 

SVK3028

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*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.

Follow all requirements in the General Category IV Venting sections for proper installation and of venting flue products horizontally to the outdoors. All other general installation requirements must be followed.

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Lochinvar 1 Horizontal INTELLI-VENT with Vertical Combustion AIR, Air Inlet Sidewall Input Flue Pipe, 500,000 SVK3026

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.

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