PRODUCT SPECIFICATIONS GAS FURNACES SL80UHV DAVE LENNOX SIGNATURE COLLECTION Upflow / Horizontal - Two-Stage Heat - Variable Blower Bulletin No. 0600 February 08 Supersedes November 07 MODEL NUMBER IDENTIFICATION SL 80 UH 070 X V 36 B AFUE - 80% Input - 66,000 to 3,000 Btuh Nominal Add-on - to 5 Tons Unit Type SL = Dave Lennox Signature Collection Stages = Two-Stage AFUE 80 = 80% Configuration UH = Upflow/Horizontal Nominal Gas Heat Input 070 = 66,000 Btuh 090 = 88,000 Btuh 0 = 0,000 Btuh 35 = 3,000 Btuh Cabinet Width A = 4-/ in. B = 7-/ in. C = in. D = 4-/ in. Nominal Add-On Capacity 36 = -3 tons 48 = 3-4 tons 60 = 3.5-5 tons Blower V = Variable Blower Motor Low NO x X = Units meet California Nitrogen Oxides Standard (40ng/J) Indoor coils with the same letter designation will physically match the furnace.
FEATURES CONTENTS K Blower Data... 6 Dimensions - Furnace/Coil Combined Dimensions... 5 Dimensions - Horizontal Position... 3 Dimensions - Upflow Position... B Features... F Gas Heat Accessories... Altitude Derate... Installation Clearances... 9 G Model Number Identification... M D E C Optional Accessories - Order Separately... Optional Accessory Dimensions... 4 I Specifications... 0 L J H NOTE - SL80UHV FURNACES ARE NOT AVAILABLE IN CANADA! WARRANTY Duralok Aluminized Steel Heat Exchanger - Limited twenty year warranty in residential applications, ten years in non-residential applications. All other covered components - Limited ten year warranty in residential applications, one year in nonresidential applications. Refer to Lennox Equipment Limited Warranty certificate included with equipment for details. APPROVALS Units are certified by AHRI. Units 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. ISO 900 Registered Manufacturing Quality System. Blower data from unit tests conducted in Lennox Laboratory air test chamber. SL80UHV / Page APPLICATIONS Input capacities of 66,000, 88,000, 0,000 and 3,000 Btuh. Energy efficiency (AFUE) of 80%. Compact cabinet for upflow, horizontal-left or horizontalright applications. Utility room, alcove, closet, crawl space, basement or attic installation. 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. Ready for installation in upflow or horizontal right-hand position without any modifications. Horizontal left-hand requires repositioning of pressure switch. Removable bottom seal panel shipped in place for side return air is easily removed for bottom/end return air applications. Each unit factory test operated to ensure proper operation. NOTE - FURNACES CANNOT BE TWINNED! Zoning Applications The SL80UHV furnace can be used with the Lennox iharmony Zoning System with the icomfort Communicating Thermostat. The iharmony Zoning System provides direct feedback to the furnace, controlling both airflow and heat output to match the comfort requirements for up to four zones.
B C D E F FEATURES HEATING SYSTEM SilentComfort Technology Patent pending burner sound enclosure and extra cabinet insulation reduces operating sound levels. Lennox Duralok Heat Exchanger Assembly Heavy gauge aluminized steel heat exchanger. Crimped seam clamshell type design. Designed for normal expansion and contraction. Minimum resistance to air flow. Heat exchanger has been laboratory life cycle tested in excess of industry standards. Compact size of heat exchanger permits low overall design of furnace cabinet. Inshot Burners Aluminized steel inshot burners provide efficient, trouble-free operation. Burner venturi mixes air and gas in correct proportion for proper combustion. Burner assembly is removable 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. 0 volt. 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. Two-Stage Gas Control Valve 4 volt redundant combination two-stage gas control valve combines manual shut off switch (On-Off), automatic electric valve (dual) and gas pressure regulation into a compact combination control. Two- Combustion Air Inducer Heavy duty, permanent split capacitor (PSC) two-speed blower prepurges heat exchanger and safely vents flue products. Dual pressure switches (low fire/high fire) prove blower operation before allowing gas valve to open. Operates only during heating cycle. Direct access allows inducer assembly to be rotated 90 clockwise or counterclockwise to facilitate easy vent attachment. G Flame Rollout Switches () Manual reset switches are factory installed on burner box. Switch provides protection from abnormal operating conditions. Limit Controls Automatic reset, primary and secondary limits are accurately located. Primary limit factory installed on vestibule panel on all units, secondary limit factory installed on blower housing. Optional Accessories Altitude Pressure Switch Kit Required on most units for proper unit operation at altitudes from 450 to 0,000 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. Vent Adaptor (Upflow Applications Only) Allows venting through a masonry chimney without the need of a flue liner. Manual reset temperature sensor protects against abnormal operating conditions. Sensor wiring may be routed from either side of adaptor. Minimum winter design temperatures: 6 in. (5 mm) 0 F when used with interior masonry chimneys. +5 F when used with exterior masonry chimneys. Refer to Winter Design Temperatures Map on page 9 for application information. Also refer to the installation instructions for detailed information. 7 in. (78 mm) SL80UHV / Page 3
FEATURES H I J BLOWER Variable Direct Drive Blower Each blower assembly statically and dynamically balanced. Change in blower speed is easily accomplished by simple DIP switch change on furnace control. See Blower Performance tables. Blower assembly easily removed for servicing. Variable Blower Motor Variable speed motor maintains specified air volume from 0 though 0.8 in. w.g. (heating) and 0 through.0 in. w.g. () static range. Variable speed operation is achieved by the use of an ECM (Electronically Commutated Motor) motor. Motor is controlled by furnace control. Motor is resiliently mounted. When furnaces are used with the iharmony Zoning System and the icomfort Communicating Thermostat, the blower motor operates from predetermined minimum - maximum air volumes to satisfy zone requirements. CONTROLS SureLight Control (icomfort Compatible) Advanced control communicates information about various operating parameters in the furnace to the optional icomfort Communicating Thermostat to constantly maintain the highest level of comfort and performance available. Auto Configuration - On startup the control automatically sends a description of the unit to the optional icomfort Communicating Thermostat to automatically configure the number of stages and features available. Connections for connecting a conventional heating/ cooling thermostat are also provided on the control. Control also features Innovative AirFlex technology allows custom blower settings based on the application. Thermostat Control - For optimal performance, the use of a high-quality, digital two-stage thermostat with adjustable settings for first stage/second stage, on/off differentials and adjustable stage timers is recommended. Furnace Input Staging Options Thermostat Type Input Staging Available icomfort S30 icomfort Wi-Fi Thermostat Two-Stage (Conventional) Single-Stage (Conventional) Two-Stage (65 and 00%) Safety Controls - Flame sensor utilizes flame rectification for safe and reliable operation. Should flame fail to ignite, control will initiate 4 reattempts 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. Display LED - Seven segment LED displays alphanumeric information related to diagnostics as well as system operation and status. Diagnostic codes are held in non-volatile memory, immune from power interruptions. Holds up to ten diagnostic codes in order of occurrence for recall on demand. Port on blower door allows for easy viewing. Select Thermostat used - Single-Stage or Two-Stage. Two selectable second stage recognition times (7 and minutes) are available on the control when the furnace is used with a single-stage thermostat. When used with a two-stage thermostat, furnace will only initiate second stage operation with a second stage thermostat demand. Heating s - A combination of DIP switch settings allow the following motor speed selection settings within the heating speed selected for fine tuning air volume: Factory default 6%, %, 8% or 4% increase 6%, % or 8% decrease See Blower Performance tables. s - A combination of DIP switch settings allow the following motor speed selection settings within the cooling speed selected for fine tuning air volume: Factory default 0% increase 0% decrease See Blower Performance tables. Blower Ramping ( Mode) - DIP switch settings allow one of four blower speed profiles during cooling operation. SL80UHV / Page 4
FEATURES CONTROLS (continued) Profile A (factory setting) - Motor runs at 50% for 30 seconds, then at 8% for 7-/ minutes, then at 00% (if needed) until demand is satisfied. Once demand is met, motor runs at 50% for 30 seconds, then ramps down to stop. Profile B - Motor runs at 8% for 7-/ minutes and then at 00% (if needed) until demand is satisfied. Once demand is met,motor ramps down to stop. Profile C - Motor runs at 00% until demand is satisfied. Once demand is met, motor runs at 00% for 60 seconds, then ramps down to stop. Profile D - Motor runs at 00% until demand is satisfied. Once demand is met, motor ramps down to stop. Dehumidification (Active or Humiditrol Option) - A jumper on the control control must be clipped to enable active dehumidification and/or operation with a Humiditrol Whole-Home Dehumidification System. A humidity controlling thermostat or device is also required. During a call for cooling, air volume is automatically reduced, forcing humidity removal by the air conditioner or heat pump system. After the humidity has reached the desired set-point the cooling air volume returns to its designed rate. A dehumidification signal from the thermostat reduces the cooling cfm to 70% of the requested cooling cfm. Dual-Fuel Operation - A jumper on the control must be clipped to enable operation with a single or two-stage heat pump. The indoor blower is started without delay when a call for heat is received. Two-Stage Compressor Operation - A jumper on the control must be clipped to enable operation with a two-stage compressor. The cooling blower speeds for first and second stage cooling will be dictated by the applicable DIP switch settings. Lennox System Operations Monitor Connection - Monitors outdoor unit operation (communicating mode). Blower On/Off Time (Heating) - Blower on time is fixed at 30 seconds, blower off time is adjustable from 60, 90, 0 and 80 seconds (factory setting - 90 seconds). Blower On/Off Time () - For air-conditioning applications, blower on time is seconds following thermostat demand for cooling. See Blower Ramping ( Mode) profiles for various blower off details. Controls evaporator humidity by controlling blower and compressor speed on two-stage outdoor units when used with the icomfort S30 Thermostat, icomfort Wi- Fi Thermostat or the ComfortSense 7500 Thermostat. Accessory Terminal - One accessory terminal furnished for additional power supply requirements for 0 volt (less than amp) powered air cleaners. One unpowered pair of contacts are provided for humidifier connections and may be connected to 4V or 0V. Control is factory installed in the unit control box. 4 Volt Transformer Furnished and factory installed in control box. 40VA transformer has circuit breaker wired in series. 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. Continuous Blower - Adjustable continuous blower speed is a percentage of the high cooling speed selection. There are four selectable options (via DIP switch settings) of 8%, 38% (default setting), 70% and 00%. SL80UHV / Page 5
FEATURES CONTROLS (continued) Optional Accessories icomfort S30 Ultra-Smart Thermostat (part of the icomfort Residential Communicating Control System) The icomfort S30 Thermostat recognizes and connects to all icomfort Communicating products to automatically configure and control the heating/cooling system (based on user-specified settings) for the highest level of comfort, performance and efficiency. Also recognizes model and serial number information for icomfort Communicating products to simplify system setup. Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Service alerts and reminders sent via text message or e-mail. Dealer Dashboard features online real-time monitoring of installed icomfort Communicating systems. A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen. Easy to read 7 in. high definition color display (measured diagonally). Conventional outdoor units (not icomfort Communicating) can easily be added and controlled by the icomfort S30 Thermostat. Installer setup screens allow quick and simple system configuration without a manual, Installer can also run tests on complete system or individual components for easy maintenance and troubleshooting. Serial communications bus (RSBus), with less wiring than a conventional heating/cooling system, allows system communication. Uses 4-wire, 8-gauge standard thermostat wiring. Definition Color Display, Mag-Mount, Smart Hub Controller, wallplate (for retrofit installations) furnished for easy installation. See the icomfort S30 Thermostat Product Specifications bulletin in the Controls section for more information. icomfort Wi-Fi Thermostat (part of the icomfort Residential Communicating Control System) The icomfort Wi-Fi Thermostat recognizes and connects to all icomfort Communicating products to automatically configure and control the heating/cooling system (based on user-specified settings) for the highest level of comfort, performance and efficiency. Also recognizes model and serial number information for icomfort Communicating products to simplify system setup. Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Service alerts and reminders sent via text message or e-mail. Dealer Dashboard features online real-time monitoring of installed icomfort Communicating systems. A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen. Easy to read 7-inch color screen (measured diagonally). Conventional outdoor units (not icomfort Communicating) can easily be added and controlled by the icomfort Wi-Fi Thermostat. Installer setup screens allow quick and simple system configuration without a manual, Installer can also run tests on complete system or individual components for easy maintenance and troubleshooting. Serial communications bus (RSBus), with less wiring than a conventional heating/cooling system, allows system communication. Uses 4-wire, 8-gauge standard thermostat wiring. See the icomfort Wi-Fi Thermostat Product Specifications bulletin in the Controls section for more information. SL80UHV / Page 6
FEATURES CONTROLS (continued) Optional Accessories (continued) ComfortSense 7500 Touchscreen Thermostat Electronic 7-day, universal, multi-stage, programmable, touchscreen thermostat. 4 Heat/ Cool. Auto-changeover. Controls dehumidification during cooling mode and humidification during heating mode. Offers enhanced capabilities including humidification / dehumidification / dewpoint measurement and control, Humiditrol control, and equipment maintenance reminders. Easy-to-use, menu driven thermostat with a back-lit, LCD touchscreen. Remote outdoor temperature sensor (optional) allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol applications. See the ComfortSense 7500 Product Specifications bulletin in the Controls section for more information. Outdoor Temperature Sensor Used with the icomfort S30, icomfort Wi-Fi Thermostat and ComfortSense 7500 thermostat. When installed outdoors, sensor allows thermostat to display outdoor temperature. Sensor is auto-detected when connected to thermostat. NOTE - Sensor is required for Humiditrol applications. NOTE - The outdoor sensor is furnished as standard with icomfort Communicating outdoor units, optional for conventional units. Thermostat Thermostat (icomfort S30, icomfort Wi-Fi Thermostat or programmable/non-programmable) is not furnished with unit. See Thermostat bulletins in Controls Section and Lennox Price Book for selection. Night Service Kit Contains most commonly used service parts: Furnace control Ignitor Flame sensor Gas valve Transformer Service Manual K L M CABINET Low-profile, narrow width cabinet allows easy installation. Heavy-gauge, cold rolled steel construction. Pre-painted cabinet finish. Flue outlet on top of cabinet for upflow applications, can be relocated to either side of cabinet for horizontal applications. Flanges provided on supply air opening for ease of plenum connection or alignment with indoor coil. Fully insulated cabinet with foil faced insulation on sides and back of heating compartment and mat faced insulation in blower compartment. Sealed blower compartment. Inner blower compartment access panel seals blower compartment from air leakage. Cabinet door can be removed without any tools Complete service access. Safety interlock switch automatically shuts off power to unit when inner blower compartment access panel is removed. Gas piping and electrical inlets are provided in both sides of cabinet. Return Air Entry: For bottom/end return-air entry for upflow/horizontal applications, remove furnished bottom seal panel from cabinet. For side return-air entry (upflow applications only), corners are marked on either side of cabinet for return air cut-outs. See dimension drawings. NOTE - 60C and 60D size units that require air volumes over 800 cfm must have one of the following:. Single side return air and Optional Return Air Base with transition that must accommodate required 0 x 5 x inch air filter to maintain proper velocity.. Bottom return air. 3. Return air from both sides. 4. Bottom and one side return air. See Blower Performance Tables for additional information. SL80UHV / Page 7
FEATURES CABINET (continued) Coil Match-Up All furnaces exactly match Lennox cased upflow indoor coils and horizontal indoor coils with same letter designation (A, B, C, D) in model number. No adaptor required. Engaging holes furnished on cabinet for alignment. Lennox uncased coils match furnaces without any overhang but require an optional adaptor base or field fabricated transition to match furnace opening. See coil bulletin for additional information. Low Leakage Cabinet All models have less than % air leakage and meet ANSI/ASHRAE Standard 93-00 Method of Test for Determining the Air Tightness of HVAC Equipment. Optional Accessories Horizontal Suspension Kit Provides suspension of unit and indoor coil in horizontal applications. Allows complete service access. Consists of corner mounted hanging brackets with vibration isolators, return air end support rail and hardware for assembly. Metal hanging straps must be field provided. Return Air Base A field fabricated transition or Return Air Base is required when using an IAQ product higher than 4-3/6 in. installed next to the unit and serviced from the front. IAQ products higher than 0 in. require a field fabricated transition. Base must be used for 60C and 60D models with air volumes over 800 cfm in upflow applications when only one side return is required. Cabinet is shipped flat for easy field assembly and is pre-painted steel to match the furnace. See Dimension Drawing. Air Filter and Rack Kit for Upflow Side Return Air Applications - Not for use with Return Air Base Washable or vacuum cleanable polyurethane frame type filter and external side return air rack available for field installation. Available in single and ten pack kits. Rack has filter door for easy filter servicing. Flanges on rack allow easy duct connection. Field installs on either side of unit cabinet. See dimension drawing. Performance Economizer (Commercial Applications Only) Designed for applications requiring outdoor air to be utilized in a commercial HVAC system. Allows the entry of fresh outdoor air for free cooling, reducing the requirement for mechanical cooling. Heavy gauge galvanized steel cabinet lined with thick fiberglass insulation. Mixed air sensor, outdoor air sensor and 4VAC transformer furnished. Approved for California Title 4 building standards. ASHRAE 90.-00 compliant. See separate Product Specifications bulletin for additional information and available control and sensor options. NOTE - Economizer is not icomfort compatible. FILTER (not furnished) Filter and provisions for external mounting must be field provided. Air Filter and Rack Kit for Horizontal Return Air (End) Applications Washable or vacuum cleanable polyurethane frame type filter and external end return air rack available for field installation. Rack has filter door for easy filter servicing. Flanges on rack allow easy duct connection. See dimension drawing. SL80UHV / Page 8
99% WINTER DESIGN TEMPERATURES FOR THE CONTIGUOUS UNITED STATES 5 o F 0 o F 7 o F 7 o F 0 o F 5 o F 37 o F 0 o F 7 o F 7 o F 37 o F This map is a necessarily generalized guide to temperatures in the contiguous Unites States. Temperatures shown for areas such as mountainous regions and large urban centers may not be accurate. The data used to develop this map was taken from the 993 ASHRAE Fundamentals Handbook (Chapter 4, Table : Climate Conditions for the United States). Reprinted with permission from NFPA 54: National Fuel Gas Code 999, National Fire Protection Association, Quincy, MA 069. This reprinted material is not the complete and official position of the National Fire Protection Association on the referenced subject, which is represented only by the standard in its entirety. INSTALLATION CLEARANCES - INCHES (MM) UPFLOW POSITION Vent Type Type B Type C Sides 0 (0) 0 (0) Rear 0 (0) 0 (0) Top (5) (5) Front -/4 (57) -/4 (57) Front (service/alcove) 4 (60) 4 (60) Floor Combustible Combustible Flue (5) 6 (5) NOTE Air for combustion must conform to the methods outlined in the National Fuel Gas Code (NFPA 54/ANSI-Z3.). NOTE In the U.S. flue sizing must conform to the methods outlined in the current National Fuel Gas Code (NFPA 54/ANSI-Z3.) or applicable provisions of local building codes. Left side requires 4 in. if single wall vent is used on 4-/ in. cabinets, in. on 7-/ in. cabinets. HORIZONTAL POSITION Vent Type Type B Type C End Rear 0 (0) 0 (0) Top 0 (0) 0 (0) Front -/4 (57) -/4 (57) Front (service) 4 (60) 4 (60) Floor Combustible Combustible Flue (5) 6 (5) NOTE Air for combustion must conform to the methods outlined in the National Fuel Gas Code (NFPA 54/ANSI-Z3.). NOTE In the U.S. flue sizing must conform to the methods outlined in the current National Fuel Gas Code (NFPA 54/ANSI-Z3.) or applicable provisions of local building codes. Line contact installation permissible between jacket top or sides and building joists.
SPECIFICATIONS Gas Heating Performance SL80UHV / Page 0 Fire Low Fire Model No. SL80UH070V36A SL80UH090V36B SL80UH090V48B Model No. - Low Nox SL80UH070XV36A - - - SL80UH090XV48B AFUE 80% 80% 80% Input - Btuh 66,000 88,000 88,000 Output - Btuh 5,000 70,000 70,000 Temperature rise range - F 40-70 40-70 40-70 Gas Manifold Pressure (in. w.g.) 3.5 / 0 3.5 / 0 3.5 / 0 Nat. Gas / LPG/Propane Input - Btuh 43,000 57,000 57,000 Output - Btuh 35,000 47,000 47,000 Temperature rise range - F 5-55 5-55 5-55 Gas Manifold Pressure (in. w.g.).7 / 4.9.7 / 4.9.7 / 4.9 Nat. Gas / LPG/Propane static - in. w.g. Heating 0.8 0.8 0.8.0.0.0 Connections Flue connection in. round 4 4 4 in. Gas pipe size IPS / / / Indoor Wheel nominal diameter x width - in. 0 X 8 0 X 9 -/ X 9 Blower Motor output - hp / /.0 Tons of add-on cooling - 3-3.5.5-4 Air Volume Range - cfm 606-345 498-393 679-00 Electrical Data Voltage 0 volts - 60 hertz - phase Blower motor full load amps 7.7 7.7.8 Maximum overcurrent protection 5 5 0 Shipping Data lbs. - package 8 43 54 NOTE - Filters and provisions for mounting are not furnished and must be field provided. Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized furnaces. Flue connection on the unit is 4 in. diameter. Most applications will require 5 in. venting and field supplied 4 x 5 in. adaptor. See Venting Tables in the Installation Instructions for detailed information. SPECIFICATIONS Gas Heating Performance Fire Low Fire Model No. SL80UH090V60C SL80UH0V60C SL80UH35V60D Model No. - Low Nox SL80UH090XV60C SL80UH0XV60C - - - AFUE 80% 80% 80% Input - Btuh 88,000 0,000 3,000 Output - Btuh 70,000 87,000 05,000 Temperature rise range - F 35-65 35-65 40-70 Gas Manifold Pressure (in. w.g.) 3.5 / 0.0 3.5 / 0.0 3.5 / 0.0 Nat. Gas / LPG/Propane Input - Btuh 57,000 7,000 86,000 Output - Btuh 47,000 58,000 69,000 Temperature rise range - F 5-55 5-55 5-55 Gas Manifold Pressure (in. w.g.).7 / 4.9.7 / 4.9.7 / 4.9 Nat. Gas / LPG/Propane static - in. w.g. Heating 0.8 0.8 0.8.0.0.0 Connections Flue connection in. round 4 4 4 in. Gas pipe size IPS / / / Indoor Wheel nominal diameter x width - in. -/ X 0 -/ X 0 -/ X Blower Motor output - hp.0.0.0 Tons of add-on cooling 3-5 3-5 3.5-5 Air Volume Range - cfm 86-305 8-5 88-57 Electrical Data Voltage 0 volts - 60 hertz - phase Blower motor full load amps.8.8.8 Maximum overcurrent protection 0 0 0 Shipping Data lbs. - package 73 8 99 NOTE - Filters and provisions for mounting are not furnished and must be field provided. Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized furnaces. Flue connection on the unit is 4 in. diameter. Most applications will require 5 in. venting and field supplied 4 x 5 in. adaptor. See Venting Tables in the Installation Instructions for detailed information.
OPTIONAL ACCESSORIES - ORDER SEPARATELY NOTE - FURNACES CANNOT BE TWINNED! CABINET ACCESSORIES A Width Models B Width Models C Width Models D Width Models Horizontal Suspension Kit - Horizontal only 5W0 5W0 5W0 5W0 Return Air Base - Upflow only 65W75 50W98 50W99 5W00 Performance Economizer (Commercial Only) 0U53 0U53 0U53 0U53 CONTROLS icomfort S30 Thermostat U67 U67 U67 U67 icomfort Wi-Fi Thermostat 0F8 0F8 0F8 0F8 Remote Outdoor Air Temperature Sensor (for dual fuel and Humiditrol ) X658 X658 X658 X658 Discharge Air Temperature Sensor 88K38 88K38 88K38 88K38 ComfortSense 7500 Thermostat 3H4 3H4 3H4 3H4 3 Remote Outdoor Air Temperature Sensor (for dual fuel and Humiditrol) FILTERS X658 X658 X658 X658 4 Air Filter and Rack Kit Horizontal (end) 87L95 87L96 87L97 87L98 NIGHT SERVICE KIT Size of filter - in. 4 x 5 x 8 x 5 x 0 x 5 x 5 x 5 x Side Return Single 44J 44J 44J 44J Ten Pack 66K63 66K63 66K63 66K63 Size of filter - in. 6 x 5 x 6 x 5 x 6 x 5 x 6 x 5 x Night Service Kit 4C98 4C98 4C98 4C98 VENTING Vent Adaptor 6 in. conn. size upflow applications only 8M79 8M79 8M79 8M79 Remote Outdoor Temperature Sensor is used with conventional (non-icomfort Communicating) outdoor units (sensor is furnished with icomfort Communicating outdoor units). Allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol applications. Optional for service diagnostics. 3 Remote Outdoor Temperature Sensor for ComfortSense 7500 Thermostat must be connected directly to the thermostat, Do not connect it to the SureLight control. 4 Cleanable polyurethane, frame-type filter. GAS HEAT ACCESSORIES Input Altitude Pressure Switch Kit Natural Gas to LPG/Propane LPG/Propane Kit to Natural Gas Kit Natural Gas Altitude Orifice Kit LPG/Propane Altitude Orifice Kit 0-4500 ft. 450-7500 ft. 750-0,000 ft. 0-7500 ft. 0-7500 ft. 750-0,000 ft. 750-0,000 ft. 070 No Change No Change 73W35 K5 77W09 73W37 K46 090 No Change 69W56 73W35 K5 77W09 73W37 K46 0 No Change 69W56 73W35 K5 77W09 73W37 K46 35 No Change 73W33 73W34 K5 77W09 73W37 K46 HIGH ALTITUDE DERATE NOTE - Units may be installed at altitudes up to 4500 ft. above sea level without any modifications. At altitudes above 4500 ft. units must be derated to match information in the shaded area shown below. NOTE - This is the only permissible derate for these units. Input Gas Manifold Pressure (Outlet) in. w.g. 0-4500 Feet 450-7500 Feet 750-0,000 ft. Natural Gas LPG/Propane Natural Gas LPG/Propane Natural Gas LPG/Propane Fire Low Fire Fire Low Fire Fire Low Fire 070 3.5.7 0 4.9 3.4.6 0 4.9 3.5.7 0 4.9 090 3.5.7 0 4.9 3..5 0 4.9 3.5.7 0 4.9 0 3.5.7 0 4.9 3..5 0 4.9 3.5.7 0 4.9 35 3.5.7 0 4.9.8.6 0 4.9 3.5.7 0 4.9 Natural Gas Alitude Orifice Kit required. Fire Low Fire Fire Low Fire Fire Low Fire SL80UHV / Page
DIMENSIONS - INCHES (MM) - UPFLOW POSITION NOTE - 60C and 60D size units that require air volumes over 800 cfm must have one of the following:. Single side return air and Optional Return Air Base with transition that must accommodate required 0 x 5 x inch (508 x 635 x 5 mm) air filter to maintain proper velocity.. Bottom return air. 3. Return air from both sides. 4. Bottom and one side return air. See Blower Performance Tables for additional information. D FLUE OUTLET (Top) 3-/8 (79) SUPPLY AIR OPENING Flue outlet may be horizontal but furnace must be vented vertically 3 Optional External Side Return Air Filter Kit is not for use with the optional Return Air Base. 3 OPTIONAL EXTERNAL SIDE RETURN AIR FILTER KIT (Either Side) 3-3/4 (603) 5 (635) TOP VIEW A B 9/6 (4) -/ (38) Front Panel 3 (76) Right 7 (78) Left 3-/4 (83) 7-3/4 (705) 9-7/6 (494) 9/6 (4) 3 OPTIONAL EXTERNAL SIDE RETURN AIR FILTER KIT (Either Side) 33 (838) 9-/8 (3) Right 8-5/8 (9) Left 5-3/8 (37) Right -3/6 (56) Left FLUE OUTLET (Either Side) GAS PIPING INLET (Either Side) ELECTRICAL INLET (Either Side) 4-3/4 (375) 6 (406) 3 (584) Side Return Air Opening (Either Side) 4 (356) -/ (38) AIR FLOW -5/6 (49) 3/4 (9) C Bottom Return Air Opening 3/4 (9) 5/8 (6) 3-/4 (83) 3-/ (597) Bottom Return Air Opening FRONT VIEW SIDE VIEW Model No. A B C D in. mm in. mm in. mm in. mm SL80UH070V36A 4-/ 368 3-3/8 340 3 330 4-3/4 SL80UH090V36B SL80UH090V48B 7-/ 446 6-3/8 46 6 406 6-/4 59 SL80UH090V60C SL80UH0V60C 533 9-7/8 504 9-/ 495 8 03 SL80UH35V60D 4-/ 6 3-3/8 594 3 584 9-3/4 48 SL80UHV / Page
DIMENSIONS - INCHES (MM) - HORIZONTAL POSITION LEFT-HAND AIR DISCHARGE Flue outlet may be from end but furnace must be vented vertically 9-/8 (3) Top 8-5/8 (9) Bottom FLUE OUTLET (Top) GAS PIPING INLET (Top or Bottom) AIR FLOW ELECTRICAL INLET (Top or Bottom) 3-/4 (83) 7-3/4 (705) 9/6 (4) FLUE OUTLET (End) 3 5-3/8 (37) Top (76) -3/6 (56) Bottom TOP VIEW 33 (838) -/ (38) Front Panel 3/4 (9) 7-3/4 (705) 9/6 (4) 9-7/6 (494) SUPPLY AIR OPENING B D A AIR FLOW 3-/4 (08) A C 3-/ (597) RETURN AIR OPENING END VIEW 3-/8 (79) FRONT VIEW RIGHT-HAND AIR DISCHARGE END VIEW ELECTRICAL INLET (Top or Bottom) AIR FLOW GAS PIPING INLET (Top or Bottom) 7 (78) Flue outlet may be horizontal but furnace must be vented vertically FLUE OUTLET (Top) 3-/4 (83) 7-3/4 (705) -/ (38) Front Panel -3/6 (56) Top 5-3/8 (37) Bottom TOP VIEW 33 (838) 8-5/8 (9) Top 9-/8 (3) Bottom FLUE OUTLET (End) 3-/8 (79) 7-3/4 (705) 3-/ (597) RETURN AIR OPENING C 3-/4 (08) A AIR FLOW A D 9-7/6 (494) SUPPLY AIR OPENING B 9/6 (4) END VIEW 3/4 (9) FRONT VIEW END VIEW 9/6 (4) Model No. A B C D in. mm in. mm in. mm in. mm SL80UH070V36A 4-/ 368 3-3/8 340 3 330 4-3/4 SL80UH090V36B SL80UH090V48B 7-/ 446 6-3/8 46 6 406 6-/4 59 SL80UH090V60C SL80UH0V60C 533 9-7/8 504 9-/ 495 8 03 SL80UH35V60D 4-/ 6 3-3/8 594 3 584 9-3/4 48 SL80UHV / Page 3
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM) HORIZONTAL (END) FILTER KIT 5/8 (6) 4 3/4 (69) -/4 (3) A 5/8 (6) B RETURN AIR OPENING 3 / (597) 5/8 (6) AIR FLOW Furnace Cabinet Width Catalog Number A B in. mm in. mm A 87L95 4 356-3/4 34 B 87L96 8 457 6-3/4 45 C 87L97 533 8-3/4 476 D 87L98 5 635 3-3/4 603 5/8 (6) SIDE VIEW AIR FILTER (Furnished) FRONT VIEW Optional Return Air Base (Upflow Applications Only - For use with A, B, C and D cabinets) FURNACE FRONT AIR FLOW INDOOR AIR QUALITY CABINET (PCO, Filter Cabinet, etc.) IF BASE IS USED WITHOUT IAQ CABINET, A SINGLE RETURN AIR PLENUM MUST COVER BOTH UNIT AND RETURN AIR BASE OPENINGS 3-/4 (83) 7-/4 (84) 3 (584) Overall (Maximum) Unit side return air Opening 5-5/8 (43) Minimum (79) Maximum 4 (356) SIDE RETURN AIR OPENINGS (Either Side) -7/6 (570) Overall (Maximum) 4-/ (368) A Width (65W75) 7-/ (446) B Width (50W98) (533) C Width (50W99) 4-/ (6) D Width (5W00) OPTIONAL RETURN AIR BASE 6-7/8 (683) 3 (584) SIDE VIEW 3/4 (9) NOTE- Optional Side Return Air Filter Kits are not for use with Optional Return Air Base. Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet. Minimum unit side return air opening dimensions for units requiring 800 cfm or more of air (W x H): 3 x in. (584 x 79 mm). The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown. Side return air openings must be cut in the field. There are cutting guides stenciled on the cabinet for the side return air opening. The size of the opening must not extend beyond the markings on the furnace cabinet. To minimize pressure drop, the largest opening height possible, up to 4 in. (356 mm), is preferred. SL80UHV / Page 4
DIMENSIONS - INCHES (MM) - FURNACE/COIL COMBINED DIMENSIONS UPFLOW POSITION Model No C35/C37/CX35/CX38 Cased C35 Uncased A B A B C35/CX35 C37 CX38 in. mm in. mm in. mm in. mm C35/CX35-8/4A C35/CX35-8/4B C35/CX35-4A C35/CX35-4B C35/CX35-30A C35/CX35-30B C37-5A C37-5B - - - - - - 6-/ 49 49-/ 57 4-/8 359 47-/8 97 CX38-5A CX38-5B 8-/ 470 5-/ 308 6-3/8 46 49-3/8 54 - - - - - - CX38-30A 0-/ 5 53-/ 359 - - - - - - - - - - - - C37-3A C37-3B C35/CX35-30/36A C37-36A C35/CX35-30/36B C37-36B C35/CX35-30/36C C37-36C C35/CX35-36A C35/CX35-36B C37-38A C37-38B CX38-3A CX38-3B CX38-36A CX38-36B CX38-36C CX38-38A CX38-38B -/ 57 55-/ 40 0-3/4 57 53-3/4 365 4-/ 6 57-/ 46 -/4 565 55-/4 403 4-/ 6 57-/ 46-3/8 568 55-3/8 407 - - - C37-4B CX38-4B 4-/ 6 57-/ 46 - - - - - - - - - - - - C35/CX35-48B C35/CX35-48C - - - C37-43B C37-43C C37-48B C37-48C CX38-43B CX38-43C CX38-44/48B CX38-44/48C 7-/ 699 60-/ 537 6-/4 667 59-/4 505 4-/ 6 57-/ 46 - - - - - - - - - - - - C35/CX35-49C C37-49C CX38-49C 9-/ 749 6-/ 588 8-/ 74 6-/ 56 C35/CX35-50/60C C37-50/60C CX38-50/60C 7-/ 699 60-/ 537 5-7/8 657 58-7/8 495 - - - C37-60D CX38-60D 5-/ 648 58-/ 486 - - - - - - - - - - - - CX35-60C C37-6C CX38-6C 3-/ 800 64-/ 638 30-5/8 778 63-5/8 66 CX35-60D C37-6D CX38-6D 9-/ 749 6-/ 588 8 7 6 549 A 33 (838) B A B 33 (838) HORIZONTAL POSITION Model A B Number in. mm in. mm CH33 CH33-8A-F -/ 546 54-/ 384 CH33-4/30A-F, CH33-4B-F, 6-/ 673 59-/ 5 CH33-36A-F, CH33-36B-F, CH33-48C-F, CH33-60D-F CH33-36C-F, CH33-44/48B-F, CH33-6D-F 3-/ 800 64-/ 638 CH33-50/60C-F, CH35 CH35-8A-F, CH35-4A-F, CH35-4B-F, CH35-30B-F, CH35-30A-F, CH35-4B-F, CH35-48B-F, CH35-36A-F, CH35-36B-F, CH35-36C-F, CH35-4C-F, CH35-48C-F CH35-5C-F, CH35-60D-F 6-/ 673 59-/ 5 3-/ 880 64-/ 638 SL80UHV / Page 5
BLOWER DATA SL80UH070V36A BLOWER PERFORMANCE (less filter) BOTTOM RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 045 45 +8% 985 080 +% 940 035 +6% 880 960 Factory Default 850 95 6% 785 875 % 745 85 8% 680 745 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 78 89 87 98 045 39 9 37 Factory Default 695 734 797 883 943 005 4 60 645 674 70 85 847 9 99 44 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 50 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 50 cfm. SL80UH070V36A BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 3 55 70 94 3 5 74 94 00 3 44 70 96 3 60 66 99 306 343 Med-low 43 66 87 03 8 47 67 90 7 34 53 85 4 66 9 36 34 367 384 Med- 53 74 97 0 43 65 84 09 8 8 98 34 6 89 36 34 367 390 4 436 77 0 3 48 75 94 8 4 66 59 8 38 339 375 40 430 457 489 507 536 Low 6 44 6 78 94 4 38 5 63 66 86 39 60 74 99 3 47 70 96 Med-low 7 49 66 83 06 6 47 69 8 87 07 34 58 8 06 3 58 74 30 39 Med- 37 57 78 04 38 67 86 03 7 50 73 07 37 67 88 33 340 360 390 60 85 0 3 48 67 93 36 97 8 49 77 306 333 358 388 4 434 454 Low 9 34 54 69 86 05 9 44 49 45 66 9 05 38 50 76 89 3 37 66 Med-low 3 4 56 75 90 3 44 59 6 86 03 3 50 7 93 7 33 6 9 Med- 4 45 63 8 0 39 6 83 84 07 39 53 78 04 34 59 80 304 35 38 59 8 04 3 45 70 88 08 36 58 90 3 36 68 90 38 339 367 390 SL80UHV / Page 6
BLOWER DATA SL80UH070V36A BLOWER PERFORMANCE (less filter) SINGLE SIDE RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 050 65 +8% 000 0 +% 940 040 +6% 895 975 Factory Default 80 935 6% 775 855 % 735 805 8% 685 750 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 764 80 886 977 035 48 360 Factory Default 704 75 793 899 949 09 35 57 64 680 77 8 874 933 0 33 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 50 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 50 cfm. SL8UH070V36A BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 36 54 73 95 3 30 47 70 86 90 38 59 90 3 36 63 84 305 39 Med-low 40 6 80 99 4 39 64 8 0 5 36 66 93 8 43 70 7 9 30 340 Med- 5 74 98 6 40 6 8 07 6 63 8 7 46 74 3 33 358 38 40 430 77 00 3 44 65 87 3 34 59 36 59 90 37 354 38 43 448 467 496 59 Low 4 63 74 98 9 35 58 74 68 90 07 34 57 75 0 39 60 86 Med-low 30 49 68 83 6 39 60 84 86 09 35 53 78 04 3 58 73 9 3 Med- 3 53 74 9 6 36 54 77 99 5 37 65 97 47 7 300 36 348 370 55 74 97 0 43 65 8 03 4 7 9 7 57 8 30 34 37 39 4 435 Low 7 3 48 69 8 97 3 46 48 67 89 0 9 5 7 94 5 3 5 Med-low 43 57 74 84 09 30 40 63 6 84 03 4 5 73 96 33 58 77 Med- 8 49 64 78 04 7 36 56 76 87 3 5 80 03 8 5 73 9 37 36 56 7 99 8 39 64 77 94 4 37 6 98 47 79 30 38 35 374 SL80UHV / Page 7
BLOWER DATA SL80UH090V36B BLOWER PERFORMANCE (less filter) BOTTOM RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 300 40 +8% 50 335 +% 85 85 +6% 45 40 Factory Default 070 70 6% 05 00 % 970 035 8% 880 980 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 66 755 846 980 08 97 9 399 Factory Default 57 698 767 886 909 083 97 84 489 67 68 8 834 968 08 79 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 50 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 50 cfm. SL80UH090V36B BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 3 9 43 6 73 86 05 37 63 85 05 34 59 86 07 30 5 75 9 Med-low 7 46 64 84 0 9 37 59 77 36 57 93 4 47 77 300 3 350 37 Med- 43 59 80 04 9 43 59 78 9 45 63 99 33 64 89 36 345 374 397 47 57 78 03 5 48 8 0 9 45 90 9 54 73 30 35 377 408 44 467 489 Low 5 4 55 65 86 93 5 3 5 70 97 3 39 55 76 99 4 6 Med-low 38 5 70 89 08 35 50 77 99 9 5 84 06 3 64 83 307 333 Med- 7 46 64 85 03 3 4 57 79 36 57 93 4 47 77 300 3 350 37 5 68 90 0 36 50 7 98 45 64 97 3 57 90 30 35 36 396 4 Low 9 35 45 60 74 89 00 9 4 59 80 96 6 36 59 76 95 04 30 Med-low 6 9 46 64 78 93 06 38 58 80 04 4 50 75 9 38 60 84 Med- 40 54 68 90 08 5 4 53 73 94 5 5 77 03 8 58 79 304 36 36 53 7 9 3 50 69 85 99 5 54 8 07 34 66 96 30 344 369 SL80UHV / Page 8
BLOWER DATA SL80UH090V36B BLOWER PERFORMANCE (less filter) SINGLE SIDE RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 305 45 +8% 50 350 +% 95 90 +6% 35 30 Factory Default 070 65 6% 995 00 % 935 030 8% 870 960 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 6 73 830 97 995 60 74 376 Factory Default 575 674 748 870 889 075 60 70 59 604 69 786 808 95 056 47 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 50 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 50 cfm. SL80UH090V36B BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 0 7 4 57 7 88 05 3 35 55 8 99 3 48 73 99 0 44 66 90 Med-low 3 44 59 80 99 9 38 58 77 03 9 5 84 4 35 64 90 36 34 368 Med- 37 56 75 95 4 35 53 74 89 47 67 05 30 64 85 37 347 365 394 43 54 8 95 0 44 70 9 7 34 89 9 49 73 3 339 379 404 43 459 485 Low 8 4 34 50 70 83 96 0 4 39 63 85 05 3 47 74 93 4 43 64 Med-low 6 36 50 68 86 06 44 59 73 9 3 48 73 03 49 66 97 37 Med- 3 43 6 8 06 3 44 60 8 03 9 5 84 4 35 64 90 36 34 368 43 6 88 07 3 45 69 89 09 49 70 99 34 59 9 3 334 367 389 4 Low 4 8 9 45 59 74 86 98 3 3 5 67 9 3 9 56 75 97 09 3 Med-low 9 44 58 79 93 9 4 50 76 97 6 4 59 85 06 35 50 8 Med- 5 36 5 67 86 08 6 44 6 68 89 39 67 9 9 43 69 9 30 3 53 70 94 09 9 53 74 89 95 8 44 78 98 6 56 78 30 38 35 SL80UHV / Page 9
BLOWER DATA SL80UH090V48B BLOWER PERFORMANCE (less filter) BOTTOM RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 80 40 +8% 0 340 +% 55 70 +6% 095 05 Factory Default 035 35 6% 970 070 % 90 000 8% 845 930 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 670 890 040 0 030 335 550 755 Factory Default 605 85 965 090 940 05 405,600 55 690 850 985 795 060 60 435 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 380 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 380 cfm. SL80UH090V48B BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 40 56 75 86 05 8 4 57 73 93 5 44 6 8 09 37 58 86 307 338 Med-low 64 86 05 46 69 87 07 7 67 96 40 6 99 38 367 398 433 467 49 Med- 93 9 4 63 89 3 37 6 86 59 87 3 374 40 45 48 58 555 58 6 8 56 88 9 48 8 308 338 366 37 407 465 493 558 604 66 706 76 764 87 Low 35 5 64 79 9 07 38 59 8 05 39 59 86 00 47 63 86 Med-low 50 65 85 4 30 48 73 79 00 4 73 06 34 7 300 33 356 395 49 Med- 75 98 7 36 59 77 87 07 44 89 54 89 335 36 400 43 458 504 56 98 49 80 94 30 5 78 300 88 3 37 398 433 470 507 554 598 63 653 Low 3 44 57 7 8 95 07 3 74 94 30 47 74 89 06 6 45 64 Med-low 43 60 76 9 09 7 43 59 76 86 9 34 6 85 36 57 90 30 34 Med- 55 70 94 6 3 57 7 90 06 38 70 94 6 69 95 35 357 384 44 44 80 00 3 47 66 87 0 3 53 04 35 69 3 34 376 45 450 48 56 546 SL80UHV / Page 0
BLOWER DATA SL80UH090V48B BLOWER PERFORMANCE (less filter) SINGLE SIDE RETURN AIR 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 80 40 +8% 0 340 +% 55 70 +6% 095 05 Factory Default 035 35 6% 970 070 % 90 000 8% 845 930 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 640 900 05 75 005 95 500 670 Factory Default 570 780 930 040 895 60 345 500 530 700 80 955 795 050 0 405 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 380 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 380 cfm. SL80UH090V48B BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 34 54 68 85 0 0 4 59 77 79 07 33 48 7 0 6 53 74 30 37 Med-low 64 85 05 4 45 66 86 06 7 5 79 4 47 76 3 339 370 399 433 464 Med- 85 35 57 84 08 33 58 84 30 6 305 348 379 4 453 490 53 565 60 0 39 7 0 34 70 94 36 35 478 369 44 46 506 547 597 643 69 735 78 Low 30 46 59 77 87 06 8 43 5 70 93 5 34 53 7 95 9 4 60 86 Med-low 36 56 76 95 0 36 6 75 96 00 3 63 9 4 44 76 307 338 368 40 Med- 64 88 06 30 49 73 98 38 66 9 3 66 303 34 370 40 444 46 493 87 8 4 6 94 3 48 75 30 45 73 333 365 396 43 460 503 546 579 635 Low 8 43 53 70 83 97 0 0 35 53 7 88 33 50 75 9 05 30 45 Med-low 37 56 7 86 06 4 4 58 76 84 34 54 85 5 35 60 84 3 336 Med- 5 69 90 09 9 5 68 87 05 9 5 8 0 44 76 307 338 370 40 43 7 94 9 38 58 8 07 33 50 80 48 84 36 355 385 49 450 487 5 SL80UHV / Page
BLOWER DATA SL80UH090V48B BLOWER PERFORMANCE (less filter) SIDE RETURN AIR WITH OPTIONAL RETURN AIR BASE 0 through 0.8 in. w.g. (Heating) and 0 through.0 in. w.g. () External Static Pressure Range Heating First Stage Heating - cfm HEATING Second Stage Heating - cfm +4% 95 45 +8% 35 355 +% 70 90 +6% 0 0 Factory Default 045 50 6% 980 080 % 90 00 8% 855 945 First Stage - cfm COOLING Second Stage - cfm Low Medium-Low Medium- Low Medium-Low Medium- + 660 905 030 75 985 90 495 675 Factory Default 600 760 930 045 905 5 345 55 535 700 850 970 85 040 5 385 and heating speeds are based on a combination of DIP switch settings on the furnace control. Refer to Installation Instructions for specific. Factory default setting. NOTES - The effect of static pressure is included in air volumes shown. First stage HEAT is approximately 9% of the same second stage HEAT. 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 selectable at 8%, 38%, 70% and 00% of the selected second stage cooling speed - minimum 380 cfm. Lennox iharmony Zoning System Applications - Minimum blower speed is 380 cfm. SL80UH090V48B BLOWER MOTOR WATTS (COOLING) + Setting Factory Default Setting First Stage Motor Watts @ Various External Static Pressures - in. wg. Second Stage 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0 0. 0. 0.3 0.4 0.5 0.6 0.7 0.8 0.9.0 Low 34 54 65 84 0 38 56 69 75 04 8 46 70 93 4 44 66 300 36 Med-low 57 74 97 0 37 58 77 97 6 4 60 89 6 54 87 39 35 385 46 449 Med- 76 0 5 47 74 00 3 48 7 08 38 79 39 350 39 4 457 489 59 564 06 34 65 93 4 59 83 33 340 30 346 386 46 470 50 554 596 640 680 7 Low 3 47 59 74 89 05 3 39 50 64 88 07 3 50 73 96 7 4 63 85 Med-low 43 6 8 0 8 44 58 77 94 94 3 50 83 3 43 79 300 33 353 393 Med- 6 85 04 30 5 73 96 6 39 50 80 9 50 94 333 368 399 48 463 497 8 3 3 5 87 38 64 9 35 63 3 349 387 46 455 489 5 568 608 Low 9 40 53 69 83 93 04 9 50 69 85 07 7 49 69 87 0 37 Med-low 3 50 66 84 0 6 36 53 7 78 05 6 46 74 99 3 47 7 95 39 Med- 46 65 86 09 7 46 67 87 07 05 35 66 95 7 6 89 39 348 380 4 69 9 34 56 75 00 45 6 95 30 64 98 334 367 40 434 469 503 SL80UHV / Page