Lennox furnace nomenclature

98-1/2" 86-1/8". For 156-300 Models. Note - Due to Lennox' ongoing commitment to quality, all specifi cations, ratings and dimensions are subject to change without notice. Visit us at www.lennox.com For the latest technical information, www.lennoxcommercial.com Contact us at 1-800-4-LENNOX ©2021 Lennox Industries, Inc. (22J48 ) 4/21.

1 Specifications -Cb29M. 2 Specifications - Cb30M. Download this manual. Service Literature. ELITE 10 CB29M and ELITE 12 CB30M SERIES UNITS. The Elite 10 CB29M and Elite 12 CB30M are high efficiency. blower coils. Several models are available in sizes ranging. from 1-1/2 through 5 tons (5.3 through 17.6 kW).Single-Stage, 96% Fuel-Efficient Gas Furnace with Power Saver™ Constant-Torque Motor Design. The Power Saver™ constant torque motor in the ML196E uses less energy in both heating and cooling modes, helping you save on utility bills. Flexible airflow based on a home's ductwork makes this furnace 33% more efficient than older furnaces ...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.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.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 ...Application — Lennox single package CHP20(R)V heat pump units are designed for outdoor rooftop or ground level installations in resi-dential or light commercial applications. Units are capable of deliver-ing bottom (down-flo) or side (horizontal) handling of supply and re-turn air. CHP20(R)V models are available in six model sizes, singleProduct Literature. The more you know about your heating or cooling product, the more confidence you'll have that Allied is the right choice. Right now. Perhaps you'd like to know more about the products you're considering. Maybe you'd like to read up on the equipment you've just purchased. Either way, Allied has an extensive ...

How It Works. Understanding how a home comfort system works starts with knowing what it is and what it consists of. A home comfort system, also called an HVAC system or a split system, has four parts: Indoor unit, such as a furnace or air handler. Outdoor unit, either an air conditioner or a heat pump. Thermostat.10- Atach botm of chain to another 24 (60 mm) rod. -1- Push and pul the rods back and forth and up and. down with a vigorous motion. The chain wil dis-. lodge the soot and scale deposits inside the heat. exchanger. Repeat for each clamshel. -12- With a shop vacuum or rags, clean out soot and.The year of manufacture of a Lennox ductless mini-split is at the 12th digit in their long serial number on the data plate. So, be ready to count carefully to locate it. The one shown below was manufactured in 2017. These units are imported from China and distributed by Lennox in the U.S.Raider® rooftop units from Lennox Commercial are the new standard for cost efficient reliable, efficient rooftop units built for long-lasting performance that can significantly improve indoor environments. CONTENTS 1. Heat Exchanger 2. Scroll Compressor 3. Lennox’ Environ™ Coil System 4. Outdoor Coil Fan Motor 5. Heavy Gauge Steel Cabinet 6.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 …

Applications. Lennox designed evaporator coils install with most Lennox up-flow furnaces. Applicable to expansion valve systems. C26–41 and C26–51/65 available in both standard and narrow (N) widths. See condensing units bulletins (section Cooling Units – Condensing Units) for evaporator unit applications and cooling capacities.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.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 ...Matching Lennox Furnace - Cabinet Width Designation C A B B C Coil & Furnace Cabinet Width - in. 21 14-1/2 17-1/2 17-1/2 21 Shipping Data - lbs. 48 46 50 55 60 SPECIFICATIONS 4 TO 5 TON General Data Model No. CX35-49C-6F CX35-50/60C-6F CX35-60C-6F CX35-60D-6F Nominal size - Tons 4 4 / 5 5 5 Line Connections in. Suction / vapor o.d. - sweat 7/8 ...

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Page 1 1991 Lennox Industries Inc. Litho U.S.A. Corp. 9121-L7 CHA16 Service Literature 2 to 5 TON Revised 02/99 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 commercial applications.Save up to $1,450 in system rebates. Save on a complete qualifying Lennox ® home comfort system that includes a gas furnace or blower coil, an air conditioner or heat pump and thermostat. Get up to $250 in combined rebates on air purification, zoning, and a smart thermostat. Save now on the Lennox S40 Smart Thermostat and save every month on ...The ML196E gas furnace comes with a 20-year limited warranty on the heat exchanger and a 5-year limited warranty on remaining covered components.**. * AFUE, or Annual Fuel Utilization Efficiency, is a measure of how much usable heat is generated when natural gas is burned in the unit. The higher the AFUE, the more heat you'll get from your ...UP-FLOW GAS FURNACES *80.0% to 80.8% A.F.U.E. 50,000 to 150,000 Btuh (14.7 to 44.0 kW) Gas Heating Input 1 thru 6 Tons (3.5 thru 21.1 kW) Nominal Add-On Cooling *Isolated Combustion System Rating For Non-Weatherized Furnaces GAS FURNACES ENGINEERING DATA September 1998 Supersedes June 1995 G23 Bulletin #210026 Utility Room InstallationLennox G24M3-75A-11 - Lennox Furnace G24M3-75A-11- Lennox Furnace G24M3-75A-11. Free shipping on orders over $99 ...The Elite ® Series model EL18XPV variable-speed heat pump is your digital bridge into a world of perfect air. In fact, it’s the first variable-speed heat pump of its kind. When paired with an iComfort ®-enabled furnace or air handler and an iComfort ® S30 thermostat, it maximizes its 18-SEER and 10.0-HSPF efficiency with modern communication features.

Elevate your business environment with Lennox HVAC solutions, addressing one of the top five environmental risks identified by the U.S. EPA - poor indoor air quality (IAQ). With options that regulate humidity levels and effectively eliminate contaminants, Lennox HVAC solutions create a healthier workspace for your team and customers. Learn moreLennoxPage 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 HighThe reduction of high energy bills for those who are using old, and out-dated furnaces is a priority. It’s possible to do so through the use of high-efficiency forced-hot-air furna...Electric Heat. 72. Thermostat. 72. Economizer. 75. Advertisement. Lennox LGC Series Pdf User Manuals. View online or download Lennox LGC Series Unit Information.safety codes. Cooling system has been rated in the Lennox environ-mental test room in accordance with ARI Standard 210/240-89. In addition, unit has been sound rated in the Lennox reverberant sound test room in accordance with ARI Standard 270-84. All -50 & -75 gas input models meet California Nitrogen Oxides (NOx) standards andAt 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 ...SL280UHV(X) series units are 80% efficiency gas furnaces used for upflow or horizontal applications only, manufac-tured with Lennox Duralok heat exchangers formed of aluminized steel. SL280UHV(X) units are available in heat-ing capacities of 66,000 to 132,000 Btuh and cooling ap-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 ...The sequence of letters and digits in the Lennox model number reflects specific information about the unit. The figures below analyze two typical model numbers. HS26-060-1PHS26 is the Series, 060 is the Capacity, 1P (1) is the Dash Number and (P) is the Power Characteristics. GCS16-090-350-2YGCS16 is the Series, 090 is the Cooling Capacity, 350 ...

The EL195NE ultra-low NOx gas furnace with our revolutionary design delivers consistent comfort, while producing 65% lower NOx emissions than standard low NOx furnaces. So, it not only meets your comfort needs, but it also meets the needs of the environment. Learn more.

Lennox Price Book for a complete list of thermostats. CABINET Conditioned areas insulated with foil faced insulation to minimize heat loss and reduce operating sound levels. Powder paint for maximum durability. Easy service access. PVC (polyvinyl chloride) coated steel wire guard provides complete coil protection. 41.5 hp motor is required with the ZA05 and ZA06 drive kits. Raider®Packaged Gas / Electric 3 to 6 Tons / Page 14. SPECIFICATIONS BELT DRIVE MODELS - 6 TON. General Data Nominal Tonnage 6 Ton 6 Ton Model No. ZGB074S4B ZGB074S4T. Efficiency TypeStandard Standard Blower TypeSingle Speed Belt Drive Two Speed Belt Drive.The CHX35 family of coils are designed with aluminum tube construction which provides great heat transfer and additional resistance to environmental contaminants. Durable components, such as corrosion-resistant casing and drain pans, help guard against unexpected service calls. CHX35-51/61C-6F-1 coil is built to high standards and is backed by ... %PDF-1.3 %âãÏÓ 38 0 obj /Linearized 1 /O 40 /H [ 581 173 ] /L 469798 /E 62932 /N 8 /T 468920 >> endobj xref 38 9 0000000016 00000 n 0000000526 00000 n 0000000754 ... 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.tech.lennoxintl.comUpgrade your heat, lower your gas bills. The Power Saver™ constant-torque motor design uses less energy in both heating and cooling modes, helping you save on utility bills. Adjusting airflow based on demand makes the ML193E gas furnace up to 46% more efficient than standard motors.98-1/2" 86-1/8". For 156-300 Models. Note - Due to Lennox' ongoing commitment to quality, all specifi cations, ratings and dimensions are subject to change without notice. Visit us at www.lennox.com For the latest technical information, www.lennoxcommercial.com Contact us at 1-800-4-LENNOX ©2021 Lennox Industries, Inc. (22J48 ) 4/21.This appendix illuminates the coding of different manufacturer model numbers. An Amana model number is shown as an example of how manufacturers code furnace characteristics. Table G.1 shows the Amana model number "GUID045CA30.". The first row of the table shows the model number broken into eight cells. The fifth, sixth, and seventh ...

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LENNOX CONDENSING UNIT LENNOX HEATING UNIT OR BLOWER COIL EVAPORATOR UNIT DISCONNECT SWITCH (By Others) THERMOSTAT (Optional) C D A SPECIFICATIONS General Dt Model No. HS26018 HS26024 HS26030 HS26036 HS26042 HS26048 HS26060 Data Nominal Tonnage 1.5 2 2.5 3 3.5 4 5 Connections (t)− Lennox addon evaporator coils, electronic air cleaners and power humidifiers can be added to furnace. − Approved for use as unit heater. − Shipped factory assembled with all controls installed and wired. − Shipped for downflow and horizontal left hand air discharge, easily converted to horizontal right hand air discharge.What 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...Your customers will enjoy the exceptional comfort that comes with reliable Lennox engineering. The ML180's durable, high-quality design ensures long-lasting performance. And with an efficiency rating of 80%, it will save them in energy costs, especially compared to an older furnace. DownflowDucane Product Literature. The more information you have about your new purchase, the more confident you’ll be that Ducane™ is the right choice. Right now. Perhaps you’d like to know more about the products you’re considering. Maybe you’d like to read up on the equipment you’ve just purchased. Either way, Ducane has an extensive ...Lennox model numbers 14= 1 ton 21= 1-1/2 ton 26= 2 ton 31= 2-1/2 ton 41= 3 ton 46= 3-1/2 ton 51= 4 ton 65= 5 ton So, your unit is a two ton model. The HS stands for high side, HP for heat pump. The next two numbers are the series of unit, they generally work up as they introduce new models. Then a dash and the next two digits which are the ...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: Table Of Contents INSTALLATION INSTRUCTIONS E 2011 Lennox Industries Inc. Dallas, Texas, USA ML195UH ® MERIT SERIES GAS FURNACE UPFLOW / HORIZONTAL AIR DISCHARGE 506723−01 Litho U.S.A. 07/2011 Supersedes 506533−01 THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE This is a safety alert symbol and should never be ignored. ….

To determine the age of your Lennox HVAC system, focus on the serial number’s third and fourth digits, representing the year of manufacture. Following these, a letter denotes the month, with ‘A’ for January and continuing alphabetically to ‘M,’ excluding ‘I.’. For instance, in serial 1919H16627, “19” signifies the year 2019 ...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.5th & 6th digits = Year. How to Determine Furnace Age. Maintained by send suggestions to [email protected] Page 8. 80 = 1980 81 = 1981 82 = 1982 right on thru. The year 2000 started the numerical numbering from 00. 00 = 2000 01 = 2001 02 = 2002 right on thru to current date.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 ...Determining the Air Tightness of HVAC Equipment". Upflow/Horizontal Capability (Optional Downflow) Shipped for upflow and horizontal left-hand discharge. May be field converted to horizontal right-hand air discharge by repositioning horizontal drain pan. Optional downflow kit available for field conversion. E F G Dual Position Drain PansPackaged units install outside, with no indoor furnace or air handler required. They're ideal for homes built on a crawlspace, instead of a basement, and contain all the components of a traditional split system HVAC in a single unit.. Lennox offers a full line of packaged units that includes gas/electric, electric/electric, heat pump and dual-fuel models.Lennox Serial Number Nomenclature | PDF | Furnace | Air Conditioning. Lennox Serial Number Nomenclature - Free download as PDF File (.pdf), Text File (.txt) or read online …tests conducted in Lennox air test chamber. Blower-coil units and components within are bonded for grounding to meet safety stan-dards for servicing required by U.L., C.S.A., NEC and CEC. Optional electric heaters are rated in accordance with U.S. Department of En-ergy (DOE) test procedures and U.S. Federal Trade Commission (FTC) labeling ...Oil furnace horizontal Direct drive blower, generally for both heating and cooling Stowaway unit (horizontal flow) Two meanings: 1) Expansion valve system for cooling units or 2) Vitreous coated heat exchanger on gas furnace Two meanings: 1) Water coil or 2) Wide cabinet Adapter frame Air cooled condenser Air module-hydronic heat Box mechanical ...LGH/LCH SERIES. The LGH/LCH242H, 300H, 360H (20, 25 and 30 ton) units are configured to order units (CTO) with a wide selection of factory-installed options. The LGH gas/electric packaged rooftop units are available in 260,000 Btuh, 360,000 Btuh and 480,000 Btuh (76.2 kW, 105.5 and 137.7 kW) heating inputs. Gas heat sections are designed with ... Lennox furnace nomenclature, Field Guide for Home Inspectors, a quick reference for finding the age of 154 brands of HVAC systems, water heaters, and electrical panels, plus 210 code standards for site-built and manufactured homes, and the life expectancy rating of 195 home components., Millions of residential and commercial property owners across North America, as well as around the globe, rely on heating and cooling systems from International Comfort Products (ICP). ICP has been designing, manufacturing and marketing these quality systems under several brand names for more than 70 years. Products are made in world-class ..., Welcome to HVAC-Talk.com, a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional! ... Is anybody here familiar with the Mammoth nomenclature? Here are the model numbers: DHEBFRC-162-3256-L275-M24 DHEBFRC-171-G256-L275-M25 DHEBFRC-212-G256-L275-M26 Any information would be greatly ..., G = Gas Furnace Series 40 = 80% Minimum AFUE Nominal Add−On Cooling Capacity 24 = 2 tons 36 = 3 tons 48 = 4 tons 60 = 5 Tons 1 090 = 88,000 BtuhCabinet Width ... Blower data from unit tests conducted in Lennox Laboratory air test chamber. ISO 9001 Registered Manufacturing Quality System. Applications Input capacities of 44,000, 66,000, 88,000 ..., Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 442 cfm. G61MPV−36B−045 BLOWER MOTOR WATTS Motor Watts @ Various External Static Pressures −... Page 5 First stage COOL (two−stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is ..., PRODUCT SPECIFICATIONS. LF24. UNIT HEATERS. Horizontal - 60 HZ. Front View Bulletin No. 210000 October 2011. Supersedes June 2011. Tubular Heat Exchanger. …, 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, air handlers, boilers and mini split ductless heat pumps., The date of production/manufacture or age of Allied-Commercial® HVAC equipment can be determined from the serial number located on the data plate. Parent: Lennox. Sister or similar Brands Include: AirEase® | Airease-Johnson® | Aire-flo® | Allied-Commercial® | Armstrong Air® | Concord® | Ducane® | Lennox® | Magic-Pak®., The Power Saver™ constant torque motor in the ML180E adjusts airspeed based on demand, which means that it operates more efficiently than a standard motor. Energy-Efficient Design - With an energy rating of 80% AFUE, the ML180E keeps your home comfortable and energy efficient. Dual-fuel operation - When the ML180E is paired with a Lennox ..., 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., 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., Model L rooftop units maximize the efficiency of maintenance and service operations, reducing operational costs and minimizing downtime.. The mobile app interface, Lennox CORE Service App, integrates diagnostic, test, and troubleshooting functionalities, reducing install times over traditional built-in interfaces. DirectPlus™ blower standard up to 12.5 tons eliminates traditional belt-drive ..., 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., The Lennox CB29M and CB30M Elite® series blower coil units are designed for installation with a matched remote outdoor unit and optional field−installed electric heat. The blower coil units are for indoor installation only. The CB29M and CB30M units, designed for multi−position-al installations, are completely assembled at the factory, 5th & 6th digits = Year. How to Determine Furnace Age. Maintained by send suggestions to [email protected] Page 8. 80 = 1980 81 = 1981 82 = 1982 right on thru. The year 2000 started the numerical numbering from 00. 00 = 2000 01 = 2001 02 = 2002 right on thru to current date., Applications. Lennox designed evaporator coils install with most Lennox up-flow furnaces. Applicable to expansion valve systems. C26–41 and C26–51/65 available in both standard and narrow (N) widths. See condensing units bulletins (section Cooling Units – Condensing Units) for evaporator unit applications and cooling capacities., 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. , 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., Lennox Air Conditioner, Heat Pump, Furnace product identification / designation code Author: Lennox HVAC Corporation Subject: Lennox Air Conditioner, Heat Pump, …, Lennox Furnace Model Number Nomenclature - ROMA Heating ..., For more information on Concord residential heating and air-conditioning products, or to find a Concord dealer in your area, contact our customer service team today. Concord Air offers residential energy efficient HVAC products that are built to last. We only use components that are specially selected for quality and durability., Packaged units install outside, with no indoor furnace or air handler required. They're ideal for homes built on a crawlspace, instead of a basement, and contain all the components of a traditional split system HVAC in a single unit.. Lennox offers a full line of packaged units that includes gas/electric, electric/electric, heat pump and dual-fuel models., Upgrade your heat, lower your gas bills. The Power Saver™ constant-torque motor design uses less energy in both heating and cooling modes, helping you save on utility bills. Adjusting airflow based on demand makes the ML193E gas furnace up to 46% more efficient than standard motors., Lennox Model and Serial Nomenclature - Free download as PDF File (.pdf), Text File (.txt) or read online for free. How to identify Lennox HVAC equipment., Product Catalog. HVAC. Furnaces. Gas Furnaces. Lennox Merit ML196E, ML196UH045XE24B, 96% AFUE, 44000 BTU, 2 Ton, 1 Stage Heat, Constant Torque …, 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 …, September 5, 2012. Note: This specification is for Lennox Industries SL280DFV and SL280UHV Gas Furnaces. Revise specification section number and title below to suit project requirements, specification practices and section content. Refer to CSI MasterFormat for other section numbers and titles. This specification utilizes the Construction ..., • A Lennox communicating thermostat must be used in communicating applications. • In non-communicating applications, the Lennox ComfortSense® thermostat may be used, as well as other non-communicating thermostats. In all cases, setup is critical to ensure proper system operation. Field wiring for both communicating and non-, − Blower data is from unit tests conducted in the Lennox Laboratory air test chamber. − Optional electric heaters are UL & ULC listed and are rated and tested according to DOE test procedures and FTC labeling regulations. − Developed in accordance with ISO 9002 quality standards., − Blower data is from unit tests conducted in the Lennox Laboratory air test chamber. − Optional electric heaters are UL and ULC listed and are rated and tested according to DOE test procedures and FTC labeling regulations. − Developed in accordance with ISO 9002 quality standards., This type has 2 numbers, a letter, followed by 2 numbers, two letters, and three digits. The first two digits are the day, the letter is the month, and the following two numbers are the year **in reverse**. Use the chart below to find the letter’s respective month of manufacture. For example, 12A56JK123 would be January 12, 1965. , Solar. SunSource® Commercial Energy System5. Factory. Field. Visit us at www.lennox.com For the latest technical information, www.lennoxcommercial.com Contact us at 1-800-4-LENNOX ©2019 Lennox Industries, Inc. (14G47) 2/19 PC92164. 92164_energence_RTU_qr_guide.indd 2. 3/4/19 9:30 AM., Page 26 D-Late Model G24M Series With SureLight Ignition Control TYPICAL G24M DIAGRAM (-11 MODEL SHOWN) 1 - When there is a call for heat, W1 of the thermostat ener- 5 - Gas valve opens for a 4-second trial for ignition. Ignitor gizes W of the furnace control with 24VAC.