Technical | Commercial HVAC Tech Support | Lennox Commercial
RESIDENTIAL PRODUCT SPECIFICATIONS GAS FURNACES ML193DFE MERIT® SERIES Downflow - High Efficiency Blower Bulletin No. 210868 April 2021 Supersedes July 2020 AFUE - 93% Input - 44,000 to 88,000 Btuh Nominal Add-on Cooling - 1.5 to 4 Tons MODEL NUMBER IDENTIFICATION ML 1 93 DF 070 X E 36 B Unit Type ML = Merit® Series Stages 1 = One-Stage AFUE 93 = 93% Configuration DF = Downflow Nominal Gas Heat Input 045 = 44,000 Btuh 070 = 66,000 Btuh 090 = 88,000 Btuh 1 Cabinet Width B = 17-1/2 in. C = 21 in. Nominal Add-On Cooling Capacity 36 = 1.5 - 3 tons 48 = 2.5 - 4 tons Blower E = High Efficiency Constant Torque Blower Motor Low NOx X = Units meet California Nitrogen Oxides Standard (40 ng/J) 1 D ownflow indoor coils with the same letter designation will physically match the furnace supply air opening. FEATURE HIGHLIGHTS 1. Lennox Duralok PlusTM Heat Exchanger 2. Secondary Heat Exchanger 3. Inshot Burners 4. Gas Control Valve 5. Combustion Air Inducer 6. SureLight® Integrated Furnace Control 7. Power SaverTM Constant Torque Blower 8. Insulated Cabinet 9. Safety Interlock Switch 10. Gas Piping And Electrical Inlets G I H C J F B E K D CONTENTS Approvals and Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Blower Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Dimensions - Furnace/Coil Combined Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Dimensions - Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Dimensions - Optional Accessories - Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Dimensions - Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Gas Heat Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 High Altitude Derate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Vent Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Vent Lengths - Uninsulated Exhaust Pipe In Unconditioned Space . . . . . . . . . . . . . . . . . . . . . . . . . 10 ML193DFE / Page 2 APPROVALS AND WARRANTY APPROVALS · AHRI Certified · Tested and rated according to US DOE test procedures and FTC labeling regulations · Approved by the California Energy Commission and meets California Nitrogen Oxides Standard (NOx) limits of 40 ng/J · ENERGY STAR® units are certified only in the U.S. South in certain states and are designed to use less energy, help save money on utility bills, and help protect the environment · ISO 9001 Registered Manufacturing Quality System · Blower data from unit tests conducted in Lennox Laboratory air test chamber California Only · These furnaces do not meet the South Coast Air Quality Management District (SCAQMD) Rule 1111 and San Joaquin Valley Air Pollution Control District (SJVAPCD) Rule 4905 NOx emission limit (14 ng/J) and cannot be installed within the SCAQMD and SJVAPCD areas · These furnaces are approved by the California Energy Commission and meets California Nitrogen Oxides Standard (NOx) limits of 40 ng/J WARRANTY · Duralok PlusTM Aluminized Steel Heat Exchanger: · Limited twenty year in residential applications · Limited ten years in non-residential applications · All other covered components: · Limited five years in residential installations · Limited one year in non-residential installations NOTE - Refer to Lennox Equipment Limited Warranty certificate included with unit for specific details. FEATURES APPLICATIONS · Input capacities of 44,000, 66,000 and 88,000 Btuh. · Energy efficiency (AFUE) 93%. · Lennox add-on indoor coils, high-efficiency air cleaners and humidifiers can easily be added to furnace. · Shipped factory assembled with controls installed and wired. · Each unit factory test operated to ensure proper operation. HEATING SYSTEM B Lennox Duralok PlusTM Heat Exchanger Assembly · Lennox developed heat exchanger assembly consists of primary heat exchanger and secondary condenser coil assembly. · Main multi-pass crimped seam design clamshell type heat exchanger. · Constructed of heavy-gauge, aluminized steel. · Designed for normal expansion and contraction with maximum efficiency and minimum resistance to air flow. C · Secondary heat exchanger condenser coil constructed of aluminum fins fitted to stainless steel tubes. · Coil is factory tested for leaks. · Condensate drain header box assembly located on front of coil. · Compact size of complete heat exchanger assembly permits low overall design of furnace cabinet. · Heat exchanger assembly has been laboratory life cycle tested in excess of industry standards. Lennox Designed Header Box · Header box on end of condenser coil collects flue condensate for disposal through condensate drains. · The drains are located on each side of the cabinet for easy field installation of condensate drain trap. · Only one drain is used, the other drain is sealed. · Condensate drain trap is included with unit for field installation. ML193DFE / Page 3 FEATURES HEATING SYSTEM (continued) Lennox Designed Flue Condensate Trap Assembly · Field installed outside the conditioned air stream · Assembly can be mounted on either side of cabinet in upflow applications · Assembly is mounted below the cabinet in horizontal applications · Can also be mounted remotely (up to 5 ft. away) from unit · See Dimension Drawing and Installation Instructions · 90° street elbow furnished for ease of drain trap installation · Drain connection can be made with field provided PVC pipe or PVC coupling · Drain cap on trap allows easy cleaning and winterizing D Inshot Burners · Aluminized steel inshot burners provide efficient, troublefree operation · Burner venturi mixes air and gas in correct proportion for proper combustion · Burner assembly can be removed from the unit as a single component for ease of service SureLight® Hot Surface Ignitor · Tough, reliable, long-life, trouble-free performance · Silicon nitride ignitor · Cemented to steatite block for protection against current leakage · Ignition leads are constructed of nickel plated copper and are enclosed in high temperature Teflon® insulation for dependable operation E Gas Control Valve · 24 volt redundant combination gas control valve combines manual shut off switch (On-Off), automatic electric valve (dual) and gas pressure regulation into a compact combination control Flame Rollout Switches (2) · Factory installed on the front of the burner box · Switch provides protection from abnormal operating conditions · Manual reset Limit Control · Automatic reset, primary limit is accurately located on header box on all units F Combustion Air Inducer · Shaded pole heavy duty blower prepurges heat exchanger and safely vents flue products · Operates only during heating cycle Pressure Switch · Proves Combustion Air Inducer operation before allowing gas valve to open Optional Accessories High Altitude Orifice Kits · Required on all units for proper operation at altitudes from 7501 to 10,000 ft. · Kits are available for natural gas and LPG/propane High Altitude Pressure Switch Kit · Required for proper unit operation on installations above 4500 ft. Natural Gas to LPG/Propane Conversion Kit · Required for field changeover from natural gas to LPG/ Propane LPG/Propane to Natural Gas Conversion Kit · Required for field changeover from LPG/Propane to natural gas Muffler (US Only) · Significantly reduces outdoor operating sound levels · Two-inch diameter muffler is optional for all models · Installed vertically in the exhaust piping · See Optional Accessory Dimension Drawing DIRECT VENT / NON-DIRECT VENT SEALED COMBUSTION SYSTEM · Furnace features a "sealed combustion" system and can be installed in either Direct Vent or Non-Direct applications · In Direct Vent applications, combustion air is supplied from outdoors and flue gases are discharged outdoors · In Non-Direct Vent applications, combustion air is supplied from indoors and flue gases are discharged outdoors NOTE - Lennox has approved the use of DuraVent® PolyPro® and Centrotherm InnoFlue® manufactured vent pipe and terminations as an alternative to PVC vent pipe. Must be ordered separately. Tested and listed to the ULC S636 standard in Canada. · The polypropylene venting system must follow the uninsulated and unconditioned space vent lengths listed in the table on Page 10 · Refer to the Installation Instructions for additional details ML193DFE / Page 4 FEATURES DIRECT VENT / NON-DIRECT VENT SEALED COMBUSTION SYSTEM (continued) Roof Termination Flashing Kit · For vertical venting through a roof Flue Coupling · Assists with exhaust flue piping connection and servicing · 2 or 3 inch kit contains two neoprene rubber roof flashings · Includes flexible one 2-inch rubber coupling and two adjustable bands · Approved for all Lennox 90% furnaces Vent Termination Kits · Facilitates installation of combustion air intake pipe and flue exhaust pipe · Refer to venting table in this bulletin to determine pipe size needed and proper termination kit required · See Optional Accessories table and dimension drawings Concentric Termination Kit - Direct Vent Applications · Vent pipe and insulation not furnished · Flashing Kit can also be used with Concentric Vent Termination Kits used in vertical venting rooftop applications CONTROLS G SureLight® Integrated Furnace Control · Contains all necessary controls and relays to operate furnace · Combustion air inducer is operated by the integrated furnace control · 2 or 3 inch kit contains concentric termination assembly, reducer bushing and 45° elbow · 2 inch kit for -030-045-070 models contains an outdoor exhaust accelerator · Kit requires single hole penetration of roof or wall for installation · Roof Termination Flashing Kit is available for use with 2 inch Kits · CSA certified Flush-Mount Termination Kit · Kit contains flush-mount termination, accelerator, mounting template and hardware · Kit may be used with 2, 2-1/2 or 3 in. pipe Wall Assembly Termination Kits Close Couple (US Only) - Direct Vent Applications · 2 or 3 inch kit consists of close-couple, side-by-side PVC piping with galvanized steel wall cover plate · Seals and isolates intake and exhaust piping penetration of wall · Piping spacing and length is sized for proper wall installations · CSA certified · 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 control will initiate 4 re-attempts at ignition before locking out unit operation for 60 minutes · Watchguard type circuit automatically resets ignition controls after one hour of continuous thermostat demand after unit lockout, eliminating nuisance calls for service · Fan control consists of adjustable blower timed-off delay (60, 90, 120, 180 seconds - factory setting 90 seconds) and fixed blower timed-on delay (30 seconds heating, 2 seconds cooling) · For air-conditioning applications, blower is automatically energized on thermostat demand for cooling · Two accessory terminals furnished for additional power supply requirements for 120 volt (less than 1 amp) power humidifiers and powered air cleaners · One additional terminal is furnished for power supply requirements for 24V (less than 0.5 amp) low voltage accessories Close Couple WTK (Canada Only) - Direct Vent Applications · 2 or 3 inch kit contains one insulated faceplate, one insulated exhaust pipe, elbow and fittings · Ignition control has a single red LED to indicate status and as an aid in troubleshooting · Last ten codes are stored in non-volatile memory (accessible by recall button on control) for servicing NOTE - Maintain a maximum of 6 inches between the inlet and outlet openings in the installation of the pipes. 24 Volt Transformer (40VA) · Fuse wired in series · Furnished and factory installed in control box Field Wiring Make-Up Box · Furnished for line voltage wiring · Factory installed internally on left side of furnace · Box may be installed internally or externally on either side of furnace ML193DFE / Page 5 FEATURES CONTROLS (continued) Optional Accessories iComfort® M30 Smart Wi-Fi Thermostat · Wi-Fi-enabled, electronic 7-day, universal, multi-stage, programmable, touchscreen thermostat · 4 Heat/2 Cool · Auto-changeover · Dual-fuel control with optional outdoor sensor · Controls dehumidification during cooling mode and humidification during heating mode Thermostat · Thermostat is not furnished with unit · See Lennox Price Book for selection Blower Relay Kit (For Use With Two-Stage Outdoor Units) · Allows furnace blower speed changes when matched with two-stage air conditioners or heat pumps Furnace Twinning Kit · Required to operate two furnaces simultaneously · Kit consists of twinning relays, quick connect terminals and mounting hardware · Used for single-stage heating/single-stage cooling with a single-stage thermostat · Offers enhanced capabilities including humidification / dehumidification / dewpoint measurement and control, Humiditrol® control, and equipment maintenance reminders · Easy to read 4.3 in. color touchscreen (measured diagonally) Night Service Kit · Contains most commonly used service parts: · Furnace Control · Igniter · Flame Sensor · LCD display with backlight shows the current and set temperature, time, inside relative humidity, system status (operating mode and schedules) and outside temperature (optional outdoor sensor required) · Gas Valve · Transformer · Service Manual · Smooth Setback Recovery starts system early to achieve setpoint at start of program period BLOWER · Direct drive blower · Compressor short-cycle protection (5 minutes) · Statically and dynamically balanced · Up to four separate schedules are available plus · Resiliently mounted Schedule IQTM · Blower assembly easily removed for servicing · One-Touch Away Mode - A quick and easy way to set the cooling and heating setpoints while away H Power SaverTM Constant Torque Blower Motor · Smart AwayTM - Uses geo-fencing technology · DC Brushless Motor to determine when the homeowner is within a · High Efficiency Constant Torque predetermined distance from the home to operate the · ECM (Electronically Commutated Motor) system when leaving, away and arriving · Motor is programmed to provide constant torque at · Wi-Fi remote monitoring and adjustment through a each of the selectable speeds home wireless network for desktop PCs, laptops and apps for smartphones or tablets · Smart home automation compatible with Amazon Alexa®, Google Assistant and IFTTT · Service Dashboard features online real-time monitoring · Motor is controlled by the Integrated Furnace Control · Blower speeds are easily changed on the integrated furnace control · See Blower Data tables of installed iComfort® thermostats NOTE - See the iComfort® M30 Smart Wi-Fi Thermostat Product Specifications bulletin in the Controls section for more information. Remote Outdoor Temperature Sensor · Used with the iComfort® M30 Smart Thermostat · Outdoor sensor allows thermostat to display outdoor temperature NOTE - Sensor is required for the Enhanced Dehumidification Accessory (EDA). ML193DFE / Page 6 FEATURES CABINET · Low-profile, narrow width allows easy installation · Heavy-gauge, cold rolled steel construction · Pre-painted cabinet finish · Flanges provided on supply air opening for ease of plenum connection or alignment with indoor coil I · Insulated with foil faced insulation on sides and back of heating compartment · Sealed blower compartment · Complete service access J · Safety interlock switch automatically shuts off power to unit when blower compartment access door is remove K · Gas piping and electrical inlets are provided in both sides of cabinet Coil Match-Up · All Lennox downflow indoor coils will physically match the furnace supply air opening with the same letter designation (A, B, C, D) as in the furnace model number Low Leakage Cabinet · All models have less than 2% air leakage and meet ANSI/ASHRAE Standard 193-2010 "Method of Test for Determining the Air Tightness of HVAC Equipment" Optional Accessories Condensate Drain Heat Cable Kits · Self-limiting wattage heat cable prevents condensate drain from freezing in unconditioned areas · Available in 6 or 24 ft. lengths Crawl Space Vent Drain Kit · Allows venting through a crawl space for downflow applications · Includes 2 or 3 in. sanitary tee, 2 in. PVC assembly, PVC boot and clamp · Kit for Canada is certified to ULC S636 Downflow Combustible Flooring Base · Required for heating only units installed on combustible floors · Not required in add-on cooling applications · See Dimension Drawing FILTER (not furnished) · Filter and provisions for external mounting must be field provided Optional Accessories Downflow Filter Cabinet · Filter cabinet mounts directly on top of furnace · "B and "C" width cabinets have two filters · Filter rails are furnished · Front access for servicing · Cleanable filter(s) are furnished ML193DFE / Page 7 SPECIFICATIONS Gas Heating Performance Model No. AHRI Reference No. 1 AFUE ML193DF045XE36B 20556884 93% ML193DF070XE36B 20556885 93% ML193DF090XE48C 20556886 93% Input - Btuh 44,000 66,000 88,000 Output - Btuh 42,000 63,000 84,000 Temperature rise range - °F 30 - 60 40 - 70 45 - 75 Gas Manifold Pressure (in. w.g.) Nat. Gas / LPG/Propane 3.5 / 10.0 3.5 / 10.0 3.5 / 10.0 High static - in. w.g. 0.50 0.50 0.50 Connections Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2 in. Gas pipe size IPS 1/2 1/2 1/2 Condensate Drain Trap (PVC pipe) - i.d. 3/4 3/4 3/4 with furnished 90° street elbow 3/4 slip x 3/4 Mipt 3/4 slip x 3/4 Mipt 3/4 slip x 3/4 Mipt with field supplied (PVC coupling) - o.d. 3/4 slip x 3/4 MPT 3/4 slip x 3/4 MPT 3/4 slip x 3/4 MPT Indoor Blower Wheel nom. dia. x width - in. Motor output - hp 10 x 8 1/2 10 x 8 1/2 10 x 10 3/4 Tons of add-on cooling 1.5 - 3 1.5 - 3 2.5 - 4 Air Volume Range - cfm 335 - 1430 340 - 1415 825 - 1720 Electrical Data Voltage Blower motor full load amps 120 volts - 60 hertz - 1 phase 6.8 6.8 8.4 Maximum overcurrent protection 15 15 15 Shipping Data lbs. - 1 package 122 128 151 NOTE - Filters and provisions for mounting are not furnished and must be field provided. 1 Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized furnaces. INSTALLATION CLEARANCES Sides 1 0 inches (0 mm) Rear 0 inches (0 mm) Top/Plenum 1 inch (25 mm) Front 0 inches (0 mm) Front (service/alcove) 24 inches (610 mm) Floor 2 Combustible NOTE - Air for combustion must conform to the methods outlined in the National Fuel Gas Code (NFPA 54/ ANSI-Z223.1) or the National Standard of Canada CAN/CSA-B149.1 "Natural Gas and Propane Installation Code". NOTE - In the U.S. flue sizing must conform to the methods outlined in the current National Fuel Gas Code (NFPA 54/ANSI-Z223.1) or applicable provisions of local building codes. In Canada flue sizing must conform to the methods outlined in National Standard of Canada CAN/CSA-B149.1. 1 Allow proper clearances to accommodate condensate trap and vent pipe installation. 2 Clearance for installation on combustible floor if Optional Downflow Combustible Flooring Base is installed between furnace and combustible floor. Not required in add-on cooling applications if installed in accordance with local codes or National Fuel Gas Code ANSI-Z223.1 or CAN/CGA-149.1,.2. Do not install the furnace directly on carpeting, tile, or other combustible materials other than wood flooring. ML193DFE / Page 8 OPTIONAL ACCESSORIES "B" Width Models "C" Width Models CABINET ACCESSORIES Downflow Combustible Flooring Base CONDENSATE DRAIN KITS Condensate Drain Heat Cable Crawl Space Vent Drain Kit CONTROLS Blower Relay Kit (for two-stage outdoor units) iComfort® M30 Smart Wi-Fi Thermostat Remote Outdoor Temperature Sensor Twinning Kit DOWNFLOW FILTER KITS 1 Downflow Filter Cabinet 6 ft. 24 ft. US Canada No. and Size of filter - in. 11M60 26K68 26K69 51W18 15Z70 85W66 15Z69 X2658 16W72 51W07 (2) 16 x 20 x 1 11M61 26K68 26K69 51W18 15Z70 85W66 15Z69 X2658 16W72 51W08 (2) 16 x 20 x 1 NIGHT SERVICE KIT Night Service Kit 84W48 84W48 TERMINATION KITS See Installation Instructions for specific venting information. Direct Vent Concentric US - 2 in. 71M80 69M29 3 in. - - - 60L46 Canada - 2 in. 44W92 44W92 3 in. - - - 44W93 Flush-Mount US - 2, 2-1/2 or 3 in. 51W11 51W11 Canada - 2, 2-1/2 or 3 in. 51W12 51W12 Wall - Close Couple US - 2 in. 22G44 - - - 3 in. 44J40 44J40 Wall - Close Couple WTK Canada - 2 in. 30G28 - - - 3 in. 81J20 81J20 Roof Termination Flashing Kit (no vent pipe - 2 flashings) 2 in. 15F75 3 in. 44J41 15F75 44J41 VENTING Flue Coupling 2 in. 17H92 17H92 1 Cleanable polyurethane frame type filter. NOTE - Termination Kits (44W92, 44W93, 30G28, 51W12, 81J20) and Crawl Space Vent Drain Kit (15Z70) are certified to ULC S636 standard for use in Canada only. ML193DFE / Page 9 GAS HEAT ACCESSORIES Models High Altitude Pressure Switch Kit 4501 - 7500 ft. 7501 - 10,000 ft. 045 11U65 11U66 070 11U65 11U66 090 11U65 11U66 Natural Gas to LPG/Propane Kit 0 - 7500 ft. 11K49 11K49 11K49 LPG/Propane to Natural Gas Kit 0 - 7500 ft. 73W81 73W81 73W81 Natural Gas High Altitude Orifice Kit 7501 - 10,000 ft. 73W37 73W37 73W37 LPG/Propane High Altitude Orifice Kit 7501 - 10,000 ft. 11K44 11K44 11K44 Muffler (US Only) 15Y66 (2-inch) 15Y66 (2-inch) 15Y66 (2-inch) HIG H ALT IT U DE DERATE NOTE - U nits may be installed at altitudes up to 10,000 ft. At altitudes above 4501 ft. the unit must be derated to match the manifold pressure information shown below. Units installed at altitudes of 4501 to 10,000 ft. require a pressure switch change. Units installed at altitudes of 7501 to 10,000 ft. require an orifice change. See the Gas Heat Accessories table for ordering information. NOTE - This is the only permissible derate for these units. NOTE - In Canada, certification for installations at elevations over 4500 feet is the jurisdiction of local authorities. Input Gas Natural All Sizes LPG/Propane 0 - 4500 ft. 3.5 10.0 Manifold Pressure in. w.g. 4501 - 5500 ft. 5501 - 6500 ft. 6501 - 7500 ft. 7501 - 10,000 ft. 3.3 3.2 3.1 3.5 9.4 9.1 8.9 10.0 Supply Line Pressure in. w.g. 0 - 10,000 ft. 4.5 13.0 11.0 13.0 VENT LENGTHS - UNINSULATED EXHAUST PIPE IN UNCONDITIONED SPACE Unit Input Size 1 Winter Design Temperatures Vent Pipe Diameter PVC 045 070 090 Maximum Uninsulated Exhaust Vent Length (ft.) PolyPro InnoFlue PVC PolyPro InnoFlue PVC PolyPro InnoFlue 1-1/2 in. 25 N/A 25 N/A N/A N/A 32 to 21°F 2 in. 2-1/2 in. 18 16 31 28 50 48 13 N/A 24 N/A 42 N/A 3 in. 9 9 18 18 35 35 1-1/2 in. 15 N/A 20 N/A N/A N/A 20 to 1°F 2 in. 2-1/2 in. 9 8 18 16 32 29 5 N/A 13 N/A 24 N/A 3 in. N/A N/A 8 8 19 19 1-1/2 in. 10 N/A 15 N/A N/A N/A 0 to 20°F 2 in. 2-1/2 in. 5 N/A 12 10 22 19 N/A N/A 7 N/A 15 N/A 3 in. N/A N/A N/A N/A 10 10 NOTE - Concentric terminations are equivalent to 5 ft. of straight pipe and should be included when measuring total pipe length. 1 Refer to 99% Minimum Design Temperature table provided in the current edition of the ASHRAE Handbook-Fundamentals. PolyPro® poly-propylene vent pipe is a registered trademark of DuraVent®. Innoflue® is a registered trademark of Centrotherm Eco Systems. ML193DFE / Page 10 OUTDOOR TERMINATION KIT USAGE Input Size 045 Vent Pipe Diameter (in.) 1 1-1/2 2 2-1/2 3 Standard Terminations Flush Mount Kit Wall Kit 2 inch 3 inch 51W11 (US) 22G44 (US) 44J40 (US) 5 51W12 (CA) 5 30G28 (CA) 5 81J20 (CA) 4 YES 4 YES 4 YES 4 YES YES YES YES YES 2 YES 2 YES 2 YES 2 YES Concentric Terminations Field Fabricated Concentric Kit Exhaust 1-1/2 inch Accelerator 2 inch 3 inch Size 71M80 (US) 69M29 (US) 60L46 (US) Required 5 44W92 (CA) 5 44W92 (CA) 5 44W93 (CA) 1-1/2 in. 3 YES - - - - - - 1-1/2 in. 3 YES - - - - - - 1-1/2 in. 3 YES - - - - - - 1-1/2 in. 3 YES - - - - - - 1 1-1/2 4 YES 070 2 2-1/2 4 YES 4 YES 3 4 YES 2 4 YES 090 2-1/2 4 YES 3 4 YES YES YES YES YES - - - - - - - 2 YES 2 YES 2 YES 2 YES YES YES YES 1-1/2 in. 1-1/2 in. 1-1/2 in. 1-1/2 in. 2 in. 2 in. 2 in. 3 YES 3 YES 3 YES 3 YES - - - - - - - - - - - - - - - YES YES YES - - - - - - - - YES YES YES NOTE - S tandard Terminations do not include any vent pipe or elbows external to the structure. Any vent pipe or elbows external to the structure must be included in total vent length calculations. See Vent Length Tables. 1 2 inch to 1-1/2 inch reducer required, must be field provided. 2 Requires field provided 1-1/2 in. outdoor exhaust accelerator. 3 Concentric Kits 71M80 and 44W92 include 1-1/2 in. outdoor exhaust accelerator, required when used with 045 and 070 input models. Accelerator is not used with 090 input models. NOTE - When using 1-1/2 in. piping, the pipe must be transitioned to 2 in. pipe when used with the Concentric Kit. 4 Flush Mount Kit 51W11 and 51W12 includes 1-1/2 in. outdoor exhaust accelerator, required when used with all models. NOTE - When using 1-1/2 in. piping, the pipe must be transitioned to 2 in. pipe when used with the Flush Mount Kit. 5 Termination Kits 30G28, 44W92, 44W93, 51W12 and 81J20 are certified to ULC S636 standard for use in Canada only. VENT LENGTHS STANDARD TERMINATION AT ELEVATION 0 - 10,000 ft. Pipe Size 1-1/2 in. 2 in. 2-1/2 in. 3 in. Input 045 070 090 045 070 090 045 070 090 045 070 090 1 20 15 N/A 61 46 24 100 80 43 127 127 108 2 15 10 N/A 56 41 19 95 75 38 122 122 103 3 10 N/A N/A 51 36 14 90 70 33 117 117 98 4 N/A N/A N/A 46 31 N/A 85 65 28 112 112 93 No. of 5 90 ELL 6 N/A N/A N/A 41 26 N/A 80 60 23 107 107 88 N/A N/A N/A 36 21 N/A 75 55 18 102 102 83 7 N/A N/A N/A 31 16 N/A 70 50 13 97 97 78 8 N/A N/A N/A 26 11 N/A 65 45 N/A 92 92 73 9 N/A N/A N/A 21 N/A N/A 60 40 N/A 87 87 68 10 N/A N/A N/A 10 N/A N/A 55 35 N/A 82 82 63 CONCENTRIC TERMINATION ELEVATION 0 - 10,000 ft. Pipe Size 1-1/2 in. 2 in. 2-1/2 in. 3 in. Input 045 070 090 045 070 090 045 070 090 045 070 090 1 15 10 N/A 53 38 22 90 70 39 111 111 104 2 10 N/A N/A 48 33 17 85 65 34 106 106 99 3 N/A N/A N/A 43 28 12 80 60 29 101 101 94 4 N/A N/A N/A 38 23 N/A 75 55 24 96 96 89 No. of 5 90 ELL 6 N/A N/A N/A 33 18 N/A 70 50 19 91 91 84 N/A N/A N/A 28 13 N/A 65 45 14 86 86 79 7 N/A N/A N/A 23 N/A N/A 60 40 N/A 81 81 74 8 N/A N/A N/A 18 N/A N/A 55 35 N/A 76 76 69 9 N/A N/A N/A 13 N/A N/A 50 30 N/A 71 71 64 10 N/A N/A N/A N/A N/A N/A 45 25 N/A 66 66 59 NOTES - Additional vent pipe and elbows used to terminate vent pipe outside the structure must be included in the total vent length calculation. Intake and exhaust pipes are sized separately. Values in table are for separate intake or exhaust pipe lengths. Both intake and exhaust pipe must be the same size diameter. ML193DFE / Page 11 VENT LENGTHS (EXHAUST) - VENTILATED ATTIC OR CRAWLSPACE INTAKE AIR - FEET STANDARD TERMINATION AT ELEVATION 0 - 10,000 ft. Pipe Size 1-1/2 in. 2 in. 2-1/2 in. 3 in. Input 045 070 090 045 070 090 045 070 090 045 070 090 1 15 10 N/A 51 36 14 85 65 28 107 107 88 2 10 N/A N/A 46 31 9 80 60 23 102 102 83 3 N/A N/A N/A 41 26 4 75 55 18 97 97 78 4 N/A N/A N/A 36 21 N/A 70 50 8 92 92 73 No. of 5 90 ELL 6 N/A N/A N/A 31 16 N/A 65 45 3 87 87 68 N/A N/A N/A 26 11 N/A 60 40 N/A 82 82 63 7 N/A N/A N/A 21 6 N/A 55 35 N/A 77 77 58 8 N/A N/A N/A 16 1 N/A 50 30 N/A 72 72 53 9 N/A N/A N/A 11 N/A N/A 45 25 N/A 67 67 48 10 N/A N/A N/A 6 N/A N/A 40 20 N/A 62 62 43 NOTES - Additional vent pipe and elbows used to terminate vent pipe outside the structure must be included in the total vent length calculation. ML193DFE / Page 12 DIMENSIONS - UNIT 9/16 (14) Flue Condensate Trap Assembly Furnished for external field installation on either side of unit. (See installation instructions for additional information.) COMBUSTION 7 AIR INTAKE (178) EXHAUST AIR OUTLET B RETURN AIR OPENING 2-1/16 (52) 5 (127) 2-1/4 9/16 (57) (14) TOP VIEW A B AIR FLOW 9/16 (14) 1 (25) Front Panel 27-3/4 (705) 19-7/16 9/16 (494) (14) 33 (838) 2 (51) Either Side GAS PIPING INLET (Either Side) 9-1/8 (232) Right 6-9/16 (167) Left 3/4 (19) C Supply Air 3/4 (19) FRONT VIEW ELECTRICAL INLET (Either Side) CONDENSATE TRAP CONNECTION (Either Side) 9 (229) 6-7/16 (163) Either Side Either Side 19-1/4 Supply 3/4 (489) Air (19) SIDE VIEW Model No. ML193DF045XE36B ML193DF070XE36B ML193DF090XE48C A in. mm 17-1/2 446 21 533 B in. mm 16-3/8 416 19-7/8 505 C in. mm 16 406 19-1/2 495 ML193DFE / Page 13 DIMENSIONS - OPTIONAL ACCESSORIES DOWNFLOW FILTER CABINET "B AND "C" WIDTH FURNACES (Two Filters) 20-1/2 (521) 17-1/2 (445) "B" Box 21 (533) "C" Box FILTERS (2) 17-1/2 (445) FILTER ACCESS DOOR NOTE: Return Air Opening (W x D) "B" Box 16-1/2 x 19-5/8 (419 x 498) "C" Box 20 x 19-5/8 (508 x 498) 50-1/2 (1283 ) FURNACE 33 (838) ML193DFE / Page 14 DIMENSIONS - OPTIONAL ACCESSORIES DOWNFLOW COMBUSTIBLE FLOORING BASE 1-1/2 (38) DOWN FLOW FURNACE 1-1/2 (38) SUPPLY AIR OPENING 19-13/16 (503) B 1-1/2 (38) 27-1/4 (692) 21-13/16 (554) 22 (559) DOWNFLOW COMBUSTIBLE FLOORING BASE FLOOR OPENING Front Of Furnace A TOP VIEW 1-1/2 (38) SIDE VIEW Cabinet Catalog Width Number A in. mm B 11M60 19-9/16 497 C 11M61 23-1/16 586 B in. mm 16-9/16 421 20-1/16 510 C in. mm 18-3/4 476 22-1/4 565 C DIMENSIONS - FURNACE/COIL COMBINED DIMENSIONS DOWNFLOW POSITION Furnace Width 33 (838) Overall Height Coil Height Model Number Coil Width in. mm Furnace Width in. mm Coil Height in. mm Overall Height in. mm CR33-24B-F 17-1/2 446 17-1/2 446 13-1/4 337 46-1/4 1175 CR33-30/36B-F 17-1/2 446 17-1/2 446 16-1/8 410 49-1/8 1248 CR33-30/36C-F 21 533 21 533 16-1/8 410 49-1/8 1248 CR33-48B-F 21 533 17-1/2 446 20 508 53 1346 CR33-48C-F 21 533 21 533 20 508 53 1346 CR33-50/60C-F 24-1/2 622 21 533 23-5/8 600 56-5/8 2276 Coil Width ML193DFE / Page 15 DIMENSIONS - OPTIONAL ACCESSORIES - VENTING FLUSH-MOUNT VENT TERMINATION KIT 51W11 (US) or 51W12 (CANADA) 2-3/8 (60) With 2 or 2-1/2 in. (51 or 64 mm) PVC pipe Exhaust Intake (Behind Plate) Seal all openings (typical) With 3 in. (76 mm) PVC pipe Exhaust Intake (Behind Plate) 12 (305) minimum (recommended) 2 (51) PVC pipe 3 (76) PVC pipe NOTE - PVC pipe and fittings are not furnished When required Use and must be field furnished. Field Provided 2-1/2 to 2 in. (64 to 51 mm) Coupling 2-1/2 (64) PVC pipe MUFFLERS 15Y66 - 2-inch 18-3/4 (476) 4-1/2 (114) (Installed Vertically in the Exhaust Pipe) ML193DFE / Page 16 DIMENSIONS - OPTIONAL ACCESSORIES - VENTING CONCENTRIC WALL TERMINATION APPLICATIONS CONCENTRIC ROOF TERMINATION APPLICATIONS EXHAUST AIR INTAKE AIR OUTSIDE WALL CLAMP (Not Furnished) INTAKE AIR EXHAUST AIR 12 (305) Minimum Above Average Snow Accumulation INTAKE AIR 12 (305) Minimum Above Grade or Average Snow Accumulation GRADE CLAMP FLASHING (Not Furnished) SHEET METAL STRAP (Clamp and sheet metal strap must be field installed to support the weight of the termination kit.) 71M80 / 69M29 / 44W92 - 2 inch kits 60L46 / 44W93 - 3 inch kits See Installation Instructions for additional information. Note - Field provided reducer may be required to adapt different vent pipe sizes to termination. A B 3-1/2 (89) - 2 in. kits 4-1/2 (114) - 3 in. kits 6-1/2 (165) 6 (152) EXHAUST AIR INTAKE AIR Cat. No. 71M80 69M29 44W92 (Canada) 60L46 44W93 (Canada) A in. mm 33-3/8 848 29 737 38-7/8 987 36-1/8 918 ELBOW (Field Supplied) TERMINATION ASSEMBLY (Furnished) Outdoor Exhaust Accelerator included with 71M80/44W92 B in. mm 16-3/4 425 15-1/2 394 21-3/16 538 19-1/2 495 NOTE - Typical illustration for dimensions only. Design may vary depending on kit ordered. ML193DFE / Page 17 DIMENSIONS - OPTIONAL ACCESSORIES - VENTING WALL TERMINATION KITS (CLOSE-COUPLE) EXTENDED VENT FOR GRADE CLEARANCE 2 inch (51 mm) 22G44 (US) 3 inch (76 mm) 44J40 (US) See Installation Instructions for additional information. Note - Field provided reducer may be required to adapt different vent pipe sizes to termination. If Intake and Exhaust Pipe is less than12 in. (305 mm) above snow accumulation or other obstructions, field fabricated piping must be installed. WALL SUPPORT 8 (203) MIN. Between Ends of Exhaust and Intake Pipe 12 (305) MAX. for 2 (51) Dia. Exhaust 20 (508) MAX. for 3 (76) Dia. Exhaust 6 (152) Maximum INTAKE AIR EXHAUST AIR INTAKE AIR 5 (127) 8 (203) MIN. 12 (305) Minimum Above Grade or Average Snow Accumulation GRADE 12 (305) MAX. for 2 (51) Dia. Exhaust 20 (508) MAX. for 3 (76) Dia. Exhaust 12 (305) 5-1/2 (140) 1/2 (13) FOAM INSULATION (Field Furnished) EXHAUST AIR 12 (305) Minimum Above Grade or Average Snow Accumulation GRADE WALL TERMINATION KITS (CLOSE-COUPLE) EXTENDED VENT FOR GRADE CLEARANCE 2 inch (51 mm) 30G28 (WTK Canada) 3 inch (76 mm) 81J20 (WTK Canada) See Installation Instructions for additional information. Note - Field provided reducer may be required to adapt different vent pipe sizes to termination. If Intake and Exhaust Pipe is less than 12 in. (305 mm) above snow accumulation or other obstructions, field fabricated piping must be installed. WALL SUPPORT 6 (152) Maximum INTAKE AIR 12 (305) MAX. for 2 (51) Dia. Exhaust 20 (508) MAX. for 3 (76) Dia. Exhaust 6 (152) MIN. EXHAUST AIR INTAKE AIR 5 (127) 6 (152) MIN. 12 (305) Minimum Above Grade or Average Snow Accumulation GRADE 12 (305) MAX. for 2 (51) Dia. Exhaust 20 (508) MAX. for 3 (76) Dia. Exhaust 12 (305) 5-1/2 (140) 1/2 (13) FOAM INSULATION (Field Furnished) EXHAUST AIR 12 (305) Minimum Above Grade or Average Snow Accumulation GRADE ML193DFE / Page 18 BLOWER DATA ML193DF045XE36B PERFORMANCE (Less Filter) External Static Pressure in. w.g. High (Black) cfm Watts Air Volume / Watts at Various Blower Speeds Medium-High (Brown) Medium (Blue) Medium-Low (Yellow) cfm Watts cfm Watts cfm Watts 0.00 1430 353 1305 270 1180 199 890 107 0.10 1395 364 1270 279 1145 207 845 113 0.20 1365 375 1245 291 1105 212 795 121 0.30 1330 383 1215 298 1070 221 740 126 0.40 1305 391 1180 310 1025 228 700 136 0.50 1275 400 1140 320 980 237 660 143 0.60 1245 406 1110 328 950 250 615 147 0.70 - - - - - - 1080 335 910 252 585 151 0.80 - - - - - - 1030 332 870 264 545 160 Low (Red) cfm Watts 740 70 695 76 640 81 575 86 530 93 485 97 445 103 390 107 335 116 ML193DF070XE36B PERFORMANCE (Less Filter) External Static Pressure in. w.g. High (Black) cfm Watts Air Volume / Watts at Various Blower Speeds Medium-High (Brown) Medium (Blue) Medium-Low (Yellow) cfm Watts cfm Watts cfm Watts 0.00 1415 340 1295 269 1175 191 905 101 0.10 1380 351 1265 276 1140 202 860 109 0.20 1345 360 1240 285 1090 208 810 119 0.30 1325 371 1215 291 1060 218 770 124 0.40 1295 380 1175 302 1025 228 710 132 0.50 1260 392 1135 318 985 236 670 138 0.60 1235 402 1105 320 955 247 620 146 0.70 1185 411 1080 333 910 254 585 152 0.80 - - - - - - 1040 342 865 261 540 157 Low (Red) cfm Watts 750 64 700 73 645 79 590 84 530 91 490 94 440 102 395 106 340 113 ML193DF090XE48C PERFORMANCE (Less Filter) External Static Pressure in. w.g. High (Black) cfm Watts Air Volume / Watts at Various Blower Speeds Medium-High (Brown) Medium (Blue) Medium-Low (Yellow) cfm Watts cfm Watts cfm Watts 0.00 1720 412 1530 281 1400 220 1290 187 0.10 1695 418 1495 288 1365 229 1265 194 0.20 1680 431 1445 300 1315 240 1240 204 0.30 1640 444 1410 309 1285 247 1200 214 0.40 1605 455 1385 318 1245 255 1160 218 0.50 1575 466 1355 325 1215 263 1115 227 0.60 1550 473 1310 334 1165 274 1085 232 0.70 1490 467 1265 346 1125 282 1030 243 0.80 - - - - - - 1240 354 1075 288 995 251 Low (Red) cfm Watts 1195 146 1160 152 1110 159 1070 165 1020 171 975 179 925 188 885 195 825 202 ML193DFE / Page 19 REVISIONS Sections Optional Accessories Description of Change Removed Wall Ring Kit (discontinued). Visit us at www.lennox.com For the latest technical information, www.LennoxPros.com Contact us at 1-800-4-LENNOX NOTE - Due to Lennox' ongoing commitment to quality, Specifications, Ratings and Dimensions subject to change without notice and without incurring liability. Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury. Installation and service must be performed by a qualified installer and servicing agency. ©2021 Lennox Industries, Inc.Adobe PDF Library 15.0