Lennox International Inc O23V3-90, O23V5-140, O23V-70 Air from an Adjacent Space, Air from Outside

Page 8

Air from an Adjacent Space

If the confined space housing the furnace adjoins space categorized as unconfined, air can be brought in by provid- ing two permanent openings between the two spaces. Each opening must have a minimum free area of 1 square inch (6.4 square centimeters) per 1,000 Btu (293 W) per hour of the total input rating of all fuel-fired equipment in the confined space, Each opening must be at least 100 square inches (614.5 square centimeters), One opening shall be within 12" (305 mm) of the top of the enclosure and one opening within 12" (305 mm) of the bottom (See figure 9),

Equipment In Confined Space -

All Air From Inside

CHIMNEY OR

OIL VENT

WATER

HEATER

OIL

FURNACE

OPENINGS

(To Adjacent

Room)

!

ii

ii

ii

ii

ii

ii

ii

ii

i

 

 

 

 

 

 

 

 

i

 

 

_1

I"

 

 

 

 

=1

I"

NOTE-Each opening shall have a free area of at least 1 square inch (6.4 square centimeters) per 1,000 Btu (293 W) per hour of the total input rating of all equipment in the enclosure, but not less than 100 square inches (614.5 square centimeters).

Figure 9

Air from Outside

If air from outside is brought in for combustion and ventila- tion, the confined space shall be provided with two perma- nent openings. One opening shall be within 12" (305 mm) of the top of the enclosure and one within 12" (305 mm) of the bottom. These openings must communicate directly or by ducts with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors or indirectly through vertical ducts. Each opening shall have a minimum free area of 1 square inch (6.4 square centimeters) per 4,000 Btu (1172 W) per hour of total input rating of all equipment in the enclosure (See figures 10 and 12). When communi- cating with the outdoors through horizontal ducts, each

opening shall have a minimum free area of 1 square inch (6.4 square centimeters) per 2,000 Btu (586 W) per total input rating of all equipment in the enclosure (See figure 12).

Equipment In Confined Space - All Air

From Outside (Inlet Air From Crawl Space

& Outlet Air To Ventilated Attic)

CHIMNEY

VENTILATION

OR OIL _

LOUVERS (Each

VENT

end of attic)

OIL

OUTLET

FURNACE

AIR

 

 

WATER

VENTILATION

HEATER

LOUVERS

INLET AIR

 

(For unheated

 

crawl space)

 

r 1

rrcrn

f "I

NOTE - The inlet and outlet air openings shall each have a free area of at least one square inch (6,4 square centimeters) per 4,000 Btu

(1172 W) per hour of the total input rating of all equipment in the en- closure.

Figure 10

Equipment In Confined Space -All

Air From Outside (All Air Through

Ventilated Attic)

CHIMNEY

OR OIL

VENT

VENTILATION LOUVERS (Each end of a{tic)

INLET AIR

OIL(Ends 12" above

FURNACE

bottom)

HEATER

NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (6.4 square centimeters) per 4, 000 Btu (1172 W) per hour of the total input rating of all equipment in the enclosure.

Figure 11

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505082M 10/05

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Contents Unit Start-Up & Adjustments Technical505,082M Blower ControlO23V Model Supply TOP Flue Outlet Side Flue Outlet4X4 O23V Installation Clearances Inches mm Top of plenum & ductCombustion Model NoBeckett Oil Burner Nozzle Adjustment O23V Series Burner RemovalWall Thimble Masonry ChimneyShouldberepairedorreplaced,Accumulationof con Factory-built ChimneyAir from Outside Air from an Adjacent SpaceEquipment In Confined Space All Air From Inside Equipment in Confined Space All Air From Outside Direct Connection of Outdoor Air for Combus- tionRemoval of Unit from Common Venting System Horizontal VentingRadiation Shield Installation Alternate Side Flue ConnectionsSystem Oil Piping One-Pipe SystemOil Micron replacement cartridge for filter, 45 gph Filter restriction indicator gaugeOne-Pipe Systems 81 P89Blower Control Board A54 BlowerControl Board A54 YI ID12 DDZ3g fAdjust Heat PumpContinuous Fan CfmModel O23V2/3-70/90 Units Model O23V3/4-105/120 Units023V Wiring Diagram LLLAdjusting Limit Control PsigServicing the Oil Burner Servicing the Air FilterProcedure Check thermostat settings CausesSource Procedure Causes BurnerCorrection Replacethe fuseSource SourceProcedureCauses Correction Locate and secure connection PowerAfter burner fires Too little heat Source ProcedureToo much heat Owner Record ReplacementInstallation Data Start-Up Procedure

O23V2-90, O23V-90, O23V4-105, O23V5-154, O23V3-70 specifications

Lennox International Inc. is a leading provider of innovative climate control solutions, widely recognized for its high-quality heating, ventilation, and air conditioning (HVAC) systems. Among its varied product line, the O23 series exemplifies Lennox's commitment to energy efficiency, performance, and user-friendly technology.

The O23V2-90, O23V3-120, O23V3-90, O23V4-105, and O23V2-70 are advanced models of the O23 series, designed specifically for residential settings. Each model offers unique specifications tailored to meet diverse customer needs.

These units are equipped with cutting-edge inverter technology, which allows for precise control of air temperature and flow. By adjusting the compressor speed, these systems optimize energy consumption while maintaining comfort. This variable-speed operation minimizes energy waste and significantly reduces utility bills, a key advantage for homeowners seeking efficient solutions.

The O23V3-120 stands out for its high cooling and heating capacities, making it ideal for larger homes or commercial spaces. Meanwhile, the O23V2-70 model is designed for smaller applications, ensuring that even modest-sized spaces can benefit from Lennox quality. Each model also features robust insulation and construction, enhancing durability and performance over time.

Incorporating smart technology, these units come with Wi-Fi connectivity, empowering users to manage their home’s temperature remotely through a smartphone app. The integration with smart home systems further enhances the user experience, providing convenience and efficiency right at your fingertips.

Quiet operation is another hallmark of the O23 series. Each model is engineered to reduce sound levels, ensuring that comfort does not compromise peace within the home.

Additionally, these units are designed with environmentally-friendly refrigerants, aligning with global sustainability efforts. This focus on eco-conscious technology not only adheres to regulatory standards but also appeals to environmentally-aware consumers.

Overall, Lennox O23 series models showcase a blend of advanced technology, efficient performance, and user-friendly features, embodying the brand’s commitment to excellence in climate control solutions. For homeowners and businesses alike, investing in these models translates to greater comfort, cost savings, and a reduced ecological footprint.