Lennox furnace nomenclature

A ton of air conditioning equals 12,000 BTU, and 48 divided by 12 equals 4, so the data plate below indicates the system is 4 tons. Here's a rundown of the range you will encounter: 18 = 1.5 tons, 24 = 2 tons, 30 - 2.5 tons, 36 = 3 tons, 42 = 3.5 tons, 48 = 4 tons, and 60 = 5 tons. And this is another one that is rated at 2.5 tons.

You can also view G24M3-75A-2 parts diagrams and manuals, watch related videos or review common problems that may help answer your questions to get started on fixing your Furnace model. For additional assistance, please contact our customer service number at 1-800-269-2609, 24 hours a day, seven days a week or send us a message using the live ...At every turn, the ML296V gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. Energy-Efficient Design - With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than ...Shop LennoxPro's huge selection of HVAC Lennox equipment, parts, and supplies. HVAC professionals can go online for easy ordering of Lennox products and other HVAC supplies. en. English (EN) ... Lennox is here to provide you with the support and resources to make 2025 compliant systems easy to sell, install, and service.Lennox Model and Serial Nomenclature | PDF | Air Conditioning | Hvac. Lennox Model and Serial Nomenclature - Free download as PDF File (.pdf), Text File (.txt) or read …9801b. 80MGF series units are mid−efficiency gas furnaces. manufactured with tubular heat exchangers formed of alu-. minized or stainless steel. 80MGF units are available in. heating capacities of 45,000 to 140,000 Btuh and cooling. applications up to 5 tons.Page 3 SPECIFICATIONS LGA/LCA General Data Nominal Tonnage (kW) 21 Ton 21 Ton 21 Ton 21 Ton Model No. 248H2B 248H4B 248H2V 248H4V Efficiency Type High High High HighML196UH045XE24B. Single-stage Gas Furnace with Power Saver™ Technology. The Power Saver ™ constant torque motor design uses less energy in both heating and cooling modes, helping homeowners save on utility bills. Flexible airflow based on a home's ductwork makes the ML196E 33% more efficient than older PSC motors, while also …Select Category. Subcategory. Select Subcategory. Model. Select Model. Choose Category to start your search. Find Lennox Commercial HVAC product service manuals, …

MODEL NUMBER NOMENCLATURE. HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). Our samples have been simplified to concentrate more on the location of each individual units ...Lennox (NYSE: LII) is a leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems.EL296UHV(X) Revised 06/2021. icomfort®- ENABLED EL296UHV(X) SERIES UNITS. EL296UHV(X) series units are 90% efficiency gas furnaces used for upflow or horizontal applications only, manufac­ tured with Lennox Duralok heat exchangers formed of aluminized steel. EL296UHV(X) units are available in heat­ ing capacities of 44,000 to …Blower data from unit tests conducted in Lennox Laboratory air test chamber. California Only If installed in South Coast Air Quality Management District (SCAQMD) only: This furnace does not meet the SCAQMD Rule 1111 NO x emission limit (14 ng/J), and thus is subject to a mitigation fee of up to $450. This furnace is not eligibleLennox LF24 gas-fired, horizontal unit heaters are compact in design and easy to install. Units feature steady-state heating efficiencies of up to 80.5%. LF24 unit heaters are ideal for economical commercial heating systems. Units are shipped completely assembled with controls factory installed and wired.

Lennox Industries Inc. P.O. Box 799900 Dallas, TX 75379-9900 NOTE - This manual must be left with the equipment user. WARNING. Do not set thermostat below 60°F (16°C) in heating mode.Settingthermostat below 60°F (16°C)reduces the number of heating cycles. Damage to the unit may occur that is not covered by the warranty.©2017 Lennox Industries Inc. Dallas, Texas, USA 506476-01 04/2017 Supersedes 03/2017 ML193DF SERIES GAS FURNACE WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or10 years on compressor. 20 years or Limited Lifetime on heat exchanger (depending upon model) Lennox Merit ® Series products. 5 years on covered components. 5 years on compressor. 20 years on heat exchanger. Healthy Climate ® Indoor Air Quality Systems. 2 or 5 years on covered components (depending upon model)NOTE − Due to Lennox’ ongoing committment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance …

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Lennox® packaged rooftop units represent some of the most innovative technology in the market. Combining industry-leading efficiency with fast, easy installation and service, Lennox continues to offer reliable systems that deliver exceptional comfort in commercial buildings. A broad range of ENERGY STAR® qualified units help control energy ...With the LennoxPros app, looking up warranty information on the job site is fast and easy. Step 1. Sign into the. Step 2. Tap Warranty. Step 3. Tap the barcode icon and scan the barcode on Lennox equipment to bring up the most recent warranty certificate. That's all there is to it. to work smarter, not harder.Model/Part # : ML196UH090XE48C. Sign in for pricing and availability. Top AHRI Matches. Print. Quantity: Add to Cart. Save to List. Specifications. Legal. Product Overview. Merit …The other installer was selling a Lennox "signature" series 13 seer H/P and 92.5% furnace. However his was almost 2500 more. Lennox has a 10 year warranty and the Westinghouse a 8. My question is, I've never seen or heard of a HVAC Westinghouse. I'd like to have some professional opionions either way before I make any decisions. Thanks! DavidWhat you need to know about furnace installation begins with understanding the type of furnace that best suits your needs. Goodman Company offers a large selection of furnaces desi...

SL280V Variable-Speed Gas Furnace. Up to 80% AFUE. Two-Stage. SilentComfort™ Technology and Sound Absorbing Insulation. Variable Speed. Insulated. SureLight® Silicon Nitride Ignitor. All Dave Lennox Signature® Collection models come with a 10-Year Limited Warranty on compressor and covered components. Furnace heat exchangers offer …Lennox (NYSE: LII) is a leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems.In the case of a furnace, you can find its serial number and model number by following a few steps. First, remove the top-front service panel of the furnace. Then in the interior cabin look on the left side of the interior or at the top of the lower deck to find the serial and model number. The interior depends on whether the system is 80 ...3 days ago · If you're an HVAC contractor or technician interested in a free test procedure describing simple testing you can do on a sales visit, contact Doc at [email protected] or call him at 800-633-7058. Go to NCI’s website at nationalcomfortinstitute.com for free information, articles, and downloads. Download. Merit ML193E Series. Single-Stage Gas Furnace with Constant-Torque Motor Design for Even Temperatures and Constant Efficiency. The Power Saver™ constant torque motor in the ML193E adjusts airspeed based on demand, which means that it operates more efficiently than a standard motor. Energy-Efficient Design - With an energy rating of 93% AFUE ... Products that add to the performance of EL297V Gas Furnace. * The EL297V offers class-leading comfort with an energy rating of 97% AFUE. This high efficiency digital furnace is designed to pair with the Lennox S40 Smart Thermostat as part of a fully communicating home comfort system. It also qualifies for the United States federal Energy ...Brand® History¹. 1895 - Lennox founded in Marshalltwon, Iowa by Dave Lennox - builds and markets the industries first riveted steel furnace. 1904 - Dave Lennox sells business to D.W. Norris, who incorporated the business as Lennox Furnace Company and proceeds to sell 600 furnaces in the company's first year. 1923 - Lennox expands to Syracuse, New YorkSL280V Variable-Speed Gas Furnace. Up to 80% AFUE. Two-Stage. SilentComfort™ Technology and Sound Absorbing Insulation. Variable Speed. Insulated. SureLight® Silicon Nitride Ignitor. All Dave Lennox Signature® Collection models come with a 10-Year Limited Warranty on compressor and covered components. Furnace heat exchangers offer either 20 ...The role of the evaporator coil. Located inside the blower compartment or air handler, the evaporator coil holds the chilled refrigerant that the compressor moves into it. As the air from the blower fan moves over the coil, the cold refrigerant removes the heat from your home's air. The refrigerant becomes warmer and travels to the condenser ...

Lennox: Before 1974 the first 2 digits indicated the year and the next digit the month. Example: 732xxx = February 1973. Most of them actually have a separate sticker somewhere that has the year printed on it. Newer ones (After 1973) are first two equals manufacturing plant #, 2nd two are year and letter in fifth slot is month (A thru M minus I).

Lennox (NYSE: LII) is a leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems.Lennox G23Q2/3-75 Installation Instructions Manual (31 pages) Brand: Lennox | Category: Furnace | Size: 0.7 MB. Lennox G23Q2/3-75 Pdf User Manuals. View online or download Lennox G23Q2/3-75 Unit Information, Installation Instructions Manual.G16Q2-50-5 Parts & Furnace Model Repair Help. Find the right Lennox Furnace Model G16Q2-50-5 replacement parts for your repair. Filter results by part category, part title and lawn mower symptoms. You can also view G16Q2-50-5 parts diagrams and manuals, watch related videos or review common problems that may help answer your questions to get started on fixing your Furnace model.Lennox Serial Number Nomenclature | PDF | Furnace | Air Conditioning. Lennox Serial Number Nomenclature - Free download as PDF File (.pdf), Text File (.txt) or read online …1935 - Lennox pioneers the introduction of a forced-air furnace for residential heating. 1943 - Lennox provides heating equipment for the military effort, as …FEATURES Item LCA/LGA 156H LCA/LGA/LHA 180 LCA/LGA 210 LCA/LGA/LHA 240 LCA/LGA 300S Air Flow Choice Bottom (downflow) or horizontal (side) supply and return air StandardTRANSFORMER. All CBX25UH series units use a single line voltage to 24VAC transformer mounted in the control box. The transformer supplies power to the control circuits in the indoor and outdoor unit. Transformers are rated at 40VA. 208/240VAC single phase transformers use two primary voltage taps as shown in figure 3.Lennox Equipment Nomenclature. Specific Inspection Topics. Inspecting HVAC Systems. pcampbell (Pete Campbell) ... Useful info on how to interpret the data labels: Scribd. Lennox Serial Number Nomenclature | Furnace (103K views) Lennox serial number decoding. smay (Scott May, CMI CCHI) January 11, 2013, 3:32am 2. Thanks Pete, good to know! ...

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GAS FURNACES ML193UH MERIT® SERIES Upflow / Horizontal Bulletin No. 210588 March 2019 Supersedes September 2018 AFUE - 93% Input - 44,000 to 132,000 Btuh ... Approved for all Lennox 90% furnaces. Termination Kits Facilitates installation of combustion air intake pipe and flue exhaust pipe. You may see revision numbers as high as 14 or even 18. The revision number is very important in repair part identification as a -1 unit may have a different motor than a -8 would. Phase or Voltage Requirement. The P indicates the phase or voltage the unit requires. P equals single phase 208-230 volt where a Y would equal 3 phase 208-230 volt or ... The date of production/manufacture or age of Magic-Pak® HVAC equipment can be determined from the serial number located on the data plate. Parent Company: Lennox Sister or similar Brands Include: AirEase® | Airease-Johnson® | Aire-flo® | Allied-Commercial® | Armstrong Air® | Concord® | Ducane® | Lennox® | Magic-Pak®The date of production/manufacture or age of Day & Night® HVAC equipment can be determined from the serial number located on the data plate. Parent Company: International Combort Products (ICP). part of UTC Building & Industrial Systems, a subsidiary company of United Technologies Corp.performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier. IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992. Approved methods of recovery, recycling or reclaiming must be followed. Fines and/or incarceration may beA ton of air conditioning equals 12,000 BTU, and 48 divided by 12 equals 4, so the data plate below indicates the system is 4 tons. Here's a rundown of the range you will encounter: 18 = 1.5 tons, 24 = 2 tons, 30 - 2.5 tons, 36 = 3 tons, 42 = 3.5 tons, 48 = 4 tons, and 60 = 5 tons. And this is another one that is rated at 2.5 tons.There are four different styles of Lennox serial number lookup age. It looks like this: Style 1: 1708A138 or 1234A123456. Style 2: A123456AAB. Style 3: 12A34 BA012. Style 4: 1234567890. Let’s break down how to read each style of the serial number to determine the Lennox HVAC age that you may be looking at:Designed for efficient durability. The ML14XC1 air conditioner is designed for smart energy use, and designed to last. Efficiency ratings of up to 17.00 SEER mean the ML14XC1 can reduce utility bills without any compromise in comfort. It may also make you eligible for local utility rebates. ….

2 Lennox Commercial is dedicated to smart business. Our rooftop units break new ground in efficiency, functionality and cost of ownership. Lennox VRF® and Lennox Mini-Split Systems deliver flexible options for every structure.And energy-saving advantages, like MSAV® supply fan technology and a full line of energy recovery solutions, offer innovation that translates to the bottom line.A heat pump is an HVAC unit that heats and cools by extracting and transferring heat. Unlike traditional air-conditioners, heat pump systems have the ability to both cool a home during the summer months and heat it during winter. They do this through a reversible refrigerant cycle within the system. During cold weather, a heat pump extracts ...Summary of Contents for Lennox LGA Series. Page 1 36.6 kW) heating inputs, with the LGA036 available only in 78,000 heating input. Gas heat sections are designed with Lennox' aluminized or optional stainless steel tube heat ex- changers. The LCA cooling packaged rooftop units are equipped with the same cooling sections as the LGA units.The SL280V comes with a 20-year limited warranty on the heat exchanger and a 10-year limited warranty on all remaining covered components.***. high-fire operation of Lennox SL280UHV070V36A and leading competitive units at mid-point temperature rise and minimum external static pressure when set up per Section 4.5.3 of AHRI 260-2001.performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier. IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992. Approved methods of recovery, recycling or reclaiming must be followed. Fines and/or incarceration may beLearn how to identify the series, tonnage, and power characteristics of Lennox furnaces and other HVAC products using the model number. See examples of Le… − Sound rated in the Lennox reverberant sound test room in accordance with test conditions included in ARI Standard 270-95. − Tested in the Lennox Research Laboratory environmental test room. − Rated according to U.S. Department of Energy (DOE) test procedures. EL296UHV(X) Revised 06/2021. icomfort®- ENABLED EL296UHV(X) SERIES UNITS. EL296UHV(X) series units are 90% efficiency gas furnaces used for upflow or horizontal applications only, manufac­ tured with Lennox Duralok heat exchangers formed of aluminized steel. EL296UHV(X) units are available in heat­ ing capacities of 44,000 to 132,000 Btuh ...Drill a 5/16" (8 mm) test hole into the air supply duct connected to the coil. (test hole 2 in figure 15). Connect the zero end of the draft gauge scale to the furnace end of the coil. Insert the hoses so that 1/4" (6 mm) extends inside the duct or end seal. Seal around holes with Permagum.At every turn, the ML296V gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. Energy-Efficient Design - With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than ... Lennox furnace nomenclature, The first two numbers stand for the factory where the unit was manufactured. The second two numbers are the year in which the unit was manufactured. For instance, if your unit's serial number is 1210B12345, this would mean that your unit was made in the year 2010 (12 would refer to the factory). Carrier/Bryant/Payne: This manufacturer often ..., Lennox (NYSE: LII) is a leader in energy-efficient climate-control solutions. Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems., Features. Use Less Energy. Save More Money. With efficiencies of up to 81% AFUE and 14.00 SEER, equivalent to 13.40 SEER2, the LRP14GN can deliver significant energy savings. In fact, it can help cut your energy bills by several hundred dollars per year., ENGINEERING DATA. CONDENSING UNITS. August1994. Supersedes November 1993. HS19 SERIES CONDENSING UNITSHS19 EXPANSION VALVE SYSTEMS. 10.00 to 12.65 SEER *21,000 to 63,000 Btuh (6.2 to 18.5 kW) Cooling Capacity 2 thru 5 Tons (7.0 to 17.6 kW) *DOE and ARI Certified Ratings. Typical Application., The Trane model number nomenclature is broken down into segments. Each segment will have a number of letters and/or digits. These letters and digits are codes that refer to the assigned value given by Trane. HVAC systems that use furnaces are called split systems and also have an evaporator coil and AC condenser or Heatpump condenser., Deciphering the model number shows that this Amana furnace model is an upflow gas furnace with induced draft, a nominal output of 45K Btuh, that it is not NO x certified, and has an airflow capability of three tons. Table 7.2.1 Amana Furnace Model Number Description G U I D 045 C A 30 Product Type Supply Type Furnace Type Model Features Nominal ... , Lennox LF24 gas-fired, horizontal unit heaters are compact in design and easy to install. Units feature steady-state heating efficiencies of up to 80.5%. LF24 unit heaters are ideal for economical commercial heating systems. Units are shipped completely assembled with controls factory installed and wired., The SL297NV ultra-low NOx gas furnace with our revolutionary design provides reliable comfort, while producing 65% lower NOx emissions than standard low NOx furnaces. So, while you’re staying cozy and warm, you’re also helping to protect the environment. Learn more., HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). ... ACNF** Unit Nomenclature. Short Description - Goodman, Ceiling-Mount Air Handler, 1½ - 2½ Tons. A 1 C 2 N 3 F 4 ..., Home | Dominion Energy, If you are an HVAC Salesman, use this app to make sure you are given comparable equipment to what a competitor is offering. If you are a home inspector, use this app to get the age and specifications of installed equipment. The model number decoder and serial number decoder for all major brands. Get this application to save time and money for ..., Dedicated to sustainability and creating comfortable and healthier environments for our residential and commercial customers while reducing their carbon footprint, we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems., At every turn, the Lennox ML296V090 gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than competitive ..., Hi. I have a lennox 80MGF3/4-100A-11 Furnace. After the furnace kicks on for 30 secs or so, the furnace makes a clicking sound, it never ignites, the flames goes down, and it just keeps recycling with … read more, Award signifies that Lennox has made outstanding contributions to design energy efficient units that will lower energy bills, while meeting industry standards for comfort and indoor air quality. Lennox was the first HVAC manufacturer to win this award and has been a four−time recipient since2003. All Low NOx models meet the California, Lennox® gas and oil furnaces promise unsurpassed comfort. Innovative design and technology automatically adjusts outputs in precise and minute increments to hold temperatures exactly where you want them. As quiet as they are efficient, Lennox furnaces combine advanced technology, engineering and sound-absorbing insulation to ensure whisper ..., At every turn, the Lennox ML296V090 gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than competitive ..., Related Manuals for Lennox GCS16 Series. Industrial Equipment Lennox GCS16 Series Manual (134 pages) Gas Heater Lennox Shadowdance LSVFSD-18 Installation And Operation Instructions Manual. Shadowdance series vent-free millivolt dual-listed gas log sets (20 pages), Created Date: 5/14/2002 3:16:17 PM, The Lennox Basic Limited Warranty Program is a voluntary manufacturer's warranty for residential application. No registration is required and terms and coverage details vary according to the products you own: Dave Lennox Signature® Collection Series products. 10 years on covered components. 10 years on compressor., Lennox add-on indoor coils, high-efficiency air cleaners and humidifiers can easily be added to furnace. Shipped factory assembled with all controls installed and wired. Each unit factory test operated to ensure proper operation. NOTE - FURNACES CANNOT BE TWINNED! Zoning Applications The EL296UHV furnace can be used with the Lennox, Lennox Elite CH35, CH35-36C-2F, 3 Ton, Piston (R410A), Cased Aluminum Horizontal Evaporator Coil. Buy the Lennox evaporator coils you need to better service your homeowners. Shop from brands like Lennox, ADP, Allstyle, and Aspen on LennoxPros now., At every turn, the ML296V gas furnace is designed to be the most energy-efficient furnace in its class. A variable-speed fan keeps temperature swings to a bare minimum. Two-stage heating saves gas by adjusting the flame size based on demand. Energy-Efficient Design - With a 96% efficiency rating, the ML296V gas furnace uses 2/3 less energy than ..., HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). ... ACNF** Unit Nomenclature. Short Description - Goodman, Ceiling-Mount Air Handler, 1½ - 2½ Tons. A 1 C 2 N 3 F 4 ..., SL280V Variable-Speed Gas Furnace. Up to 80% AFUE. Two-Stage. SilentComfort™ Technology and Sound Absorbing Insulation. Variable Speed. Insulated. SureLight® Silicon Nitride Ignitor. All Dave Lennox Signature® Collection models come with a 10-Year Limited Warranty on compressor and covered components. Furnace heat exchangers offer either 20 ..., You may see revision numbers as high as 14 or even 18. The revision number is very important in repair part identification as a -1 unit may have a different motor than a -8 would. Phase or Voltage Requirement. The P indicates the phase or voltage the unit requires. P equals single phase 208-230 volt where a Y would equal 3 phase 208-230 volt or ..., Lennox: Before 1974 the first 2 digits indicated the year and the next digit the month. Example: 732xxx = February 1973. Most of them actually have a separate sticker somewhere that has the year printed on it. Newer ones (After 1973) are first two equals manufacturing plant #, 2nd two are year and letter in fifth slot is month (A thru M minus I)., Page 1 1991 Lennox Industries Inc. Corp. 9121-L7 Litho U.S.A. 2-5 TON UNITS CHA16 SERIES UNITS 2 THROUGH 5 TON UNITS CHA16 series units in the 2-5 ton sizes were introduced in the spring of 1990. The single package cooling units may be used in both residential and com-mercial applications. Electric heat is available in sever-al Kw sizes., How to Read a Lennox Serial Number. This Lennox serial number lookup works for the Lennox age of unit lookup on air conditioners, heat pumps, gas furnaces, …, Quality Parts & Supplies. LennoxPros has 1000s of HVAC Parts and Supplies from adapter curbs to welding equipment. Give LennoxPros.com a try or stop by a Lennox Store location near you. Shop Parts & Supplies. Find Lennox OEM repair parts fast. Our Repair Part Finder lets you search by model number, part number, serial number or catalog number., Apr 12, 2024 · Efficient and Affordable. The ML17XP1 offers energy efficiencies of up to 18.60 SEER and 10.60 HSPF, equivalent to 17.00 SEER2 and 8.50 HSPF2, delivering comfort and energy savings at a more affordable price. , furnace. Combustion air inducer is operated by the integrated furnace control. Prior to ignition, a pre-purge cycle for 15 seconds is initiated. After the main burners are turned off, a post-purge cycle for 5 seconds is run. Flame sensor assures safe and reliable operation. Should loss of flame occur, the integrated furnace, With the help of the Lennox S40 Smart Thermostat ultra smart thermostat, the SLP99V gas furnace unlocks a world of connectivity. It stays finely tuned to your home by using sensors to react, diagnose, and troubleshoot—all while remaining in constant contact with your dealer to ensure proactive responses. Geofencing technology ensures your air ...