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Unit Type DF = Dual-Fuel (Heat Pump/Gas Heating) Unit
Nominal SEER 14 = 14 SEER
P R O D U C T S P E C I F I C AT I O N S
Low NOx X = Units meet California Nitrogen Oxides standards (blank if standard model)
LRP14DF 2-5 TON RESIDENTIAL PACKAGED UNIT
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 2
WARRANTY
Compressor - Ten year limited warranty in residential installations and five years in non-residential installations.
Heat Exchanger - Twenty year limited warranty in residential applications and ten years in non-residential applications.
All other covered components - Five years in residential installations and one year in non-residential installations.Refer to Lennox Equipment Limited Warranty certificate included with unit for specific details.
APPROVALSAHRI Certified to AHRI Standard 210/240-2008.Units are design certified by ETL Intertek.Cooling system rated according to DOE test procedures.Gas heating ratings are according to Department of Energy (DOE) test procedures and Federal Trade Commission (FTC) labeling regulations and are certified by AHRI.“X” models are approved by the California Energy Commission and meet California Nitrogen Oxides Standard (NOx) limits of 40 ng/J.Units are ETL certified for the U.S. and Canada.Packaged unit and components within bonded for grounding to meet safety standards required by UL.Each unit test operated at the factory before shipment ensuring dependable operation at start-up.
California OnlyIf installed in South Coast Air Quality Management District (SCAQMD) only:This furnace does not meet the SCAQMD Rule 1111 NOx emission limit (14 ng/J), and thus is subject to a mitigation fee of up to $450. This furnace is not eligible for the Clean Air Furnace Rebate Program: www.CleanAirFurnaceRebate.com.If installed in San Joaquin Valley Air Pollution Control
A
District (SJVAPCD) only:This furnace does not meet the SJVAPCD Rule 4905 NOx emission limit (14 ng/J), and thus is subject to a mitigation fee of up to $450.
APPLICATIONSDesigned for outdoor installations at ground level or rooftop for residential applications.
DUAL-FUEL OPERATIONIn the heating mode the unit operates the heat pump for 1st stage heating. If 1st stage is not satisfied, the 2nd stage will activate gas heating (secondary heat source).The systems’ dual-fuel (two-stage heat) thermostat will changeover to gas heating operation at outdoor ambient temperatures below the field selected changeover temperature.Heat pump operation automatically terminates on gas heating start-up.Blower speeds automatically change between heat pump and gas heat operation.Blower operates in high speed during 1st stage (heat pump) operation and is terminated during changeover to gas heat operation.Blower runs in low speed during 2nd stage (gas heat) operation.If continuous blower operation is available on thermostat, change in blower speed automatically occurs during heat pump heating to gas heat changeover.
Indoor and Outdoor CoilsCopper tube with aluminum fin coils.
Anti-Microbial Indoor Coil Drain PanAnti-Microbial additive resists growth of mold and mildew on drain pan which improves indoor
air quality and reduces drain line blockage.
Outdoor Coil FanWeather protected heavy duty outdoor coil fan motor with coated steel fan blades for long life.Internally mounted.Totally enclosed motor.Fan guard constructed of corrosion-resistant coated steel.
Reversing Valve4-way interchange reversing valve effects a rapid change in direction of refrigerant flow resulting in quick changeover from cooling to heating and vice versa.
High Pressure SwitchShuts off unit if abnormal operating conditions cause the discharge pressure to rise above setting.Protects compressor from excessive condensing pressure. Automatic reset.
Loss of Charge SwitchProvides loss of charge protection by shutting off unit if liquid pressure falls below setting.
Optional Accessories
Drain Pan Overflow SwitchMonitors condensate level in drain pan, shuts down unit if drain becomes clogged.
SCROLL COMPRESSORCompressor features high efficiency with uniform suction flow, constant discharge flow and high volumetric efficiency and quiet operation.Compressor consists of two involute spiral scrolls matched together to generate a series of crescent shaped gas pockets between them.During compression, one scroll remains stationary while the other scroll orbits around it. Gas is drawn into the outer pocket, the pocket is sealed as the scroll rotates.As the spiral movement continues, gas pockets are pushed to the center of the scrolls. Volume between the pockets is simultaneously reduced.When pocket reaches the center, gas is now at high pressure and is forced out of a port located in the center of the fixed scrolls.During compression, several pockets are compressed simultaneously resulting in a smooth continuous compression cycle.Continuous flank contact, maintained by centrifugal force, minimizes gas leakage and maximizes efficiency.Scroll compressor is tolerant to the effects of slugging and contaminants. If this occurs, scrolls separate, allowing liquid or contaminants to to be worked toward the center and discharged.Low gas pulses during compression reduces operational sound levels.Compressor motor is internally protected from excessive current and temperature.Compressor is installed in the unit on resilient rubber mounts for vibration free operation.
Compressor Crankcase HeaterProtects against refrigerant migration that can occur during low ambient operation.
Optional Accessories
Compressor Hard Start KitSingle-phase units are equipped with a PSC compressor motor. This type of motor normally doesn’t need a potential relay and start capacitor.In conditions such as low voltage, this kit may be required to increase the compressor starting torque.
GAS HEATING SYSTEMHeat ExchangerAluminized tubular steel for superior resistance to corrosion and oxidation.Round surfaces create minimum air resistance and allow air to surround all surfaces for excellent heat transfer.Compact design reduces space requirements in unit cabinet.Heat exchanger has been laboratory life cycle tested.
Inshot BurnersAluminized 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 and each burner may be removed individually.
Gas Control Valve24 volt redundant combination gas control valve combines manual shut off valve (On-Off), automatic electric valve (dual) and gas pressure regulation into a compact combination control.
Combustion Air InducerHeavy duty combustion air inducer prepurges heat exchanger and safely vents flue products.Blower is controlled by the ignition control board.Pressure switch proves blower operation before allowing gas valve to open.Combustion air inducer operates during heating cycle.Inducer also operates for the first 10 seconds of every cooling cycle to prevent insects from nesting in the flue outlet during cooling season.
Limit ControlsAutomatic reset, primary limit is accurately located.Primary limit factory installed on heating vestibule panel on all units.
Flame Rollout SwitchManual reset switch is factory installed on burner box.Switch provides protection from abnormal operating conditions.
Ignition Control BoardIgnition control board with LED diagnostics.
FEATURES
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 4
GAS HEATING SYSTEM (continued)
Optional Accessories
LPG/Propane Conversion KitRequired for field changeover from natural gas to LPG/Propane.
SUPPLY AIR BLOWERDirect Drive BlowerEach blower wheel is statically and dynamically balanced.Multi-speed, direct drive blower motor on 42 and 48 models.Constant-torque ECM direct drive motor on the 24, 30, 36 and 60 models.Change in blower speed is easily accomplished by simple wiring change on blower motor.Blower assembly easily removed for servicingSee Blower Performance tables.
CABINETConditioned areas insulated with foil faced insulation to minimize heat loss and reduce operating sound levels.Powder paint for maximum durability.Easy service access.Steel louvered panels provides complete coil protection.
Airflow ChoiceUnits are shipped in horizontal configuration and can be field converted to downflow (vertical) airflow with optional Downflow Conversion Kit.
Gas Piping Inlets, Electrical Inlets and Service ValvesGas piping and field wiring inlets are located in one central area of the cabinet. See dimension drawing.Gauge ports are located inside the cabinet.
Optional Accessories
Downflow Conversion KitRequired for field conversion to downflow (vertical) air. Kit consists of 2 duct covers to block off horizontal air openings on side of unit. Required for field conversion to downflow (vertical) air. Kit consists of 2 duct covers to block off horizontal air openings on side of unit. Kit also includes drain pan overflow switch to monitor condensate level in drain pan, shuts down unit if drain becomes clogged.
Lifting BracketsAvailable to facilitate rigging of the unit.
Clip Curb (Full Perimeter)Mates to unit.Roof curb can be assembled using interlocking tabs to fasten corners together. No tools required.Available in 8 and 14 inch heights.Shipped knocked down.
FEATURES
Adjustable Pitch Roof Curb (Full Perimeter)Fully adjustable pitch curb provides a level platform for packaged units allowing flexible installations on roofs with sloped or uneven angles.Adjustable from 2/12 to 6/12 pitch.Unit hold-down brackets secure packaged unit to curb.Constructed of heavy-gauge galvanized steel with fully welded seams and corners.Rounded corners on flange prevent damage to roof shingles.Built-in drip edge.IAPMO/UMC listed.CBC 2013 compliant (California).Seismic rating - Ss=3.73 Ip=1.5, wind rating - 155mph.Maximum load rating – 800 lbs.
AIR FILTER (required)Filters are not furnished - must be field provided.
Internal Filter Rack KitsAvailable for 1 in. thick filters. Kit contains filter rails for mounting filters internal to unit. Filters must be field provided. Filters are available separately.
CONTROLSElectronic blower control.Single pole contactor.Trade available components.
Defrost ControlDefrost control furnished as standard equipment.Gives a defrost cycle for every 30, 60 or 90 minutes (adjustable) of compressor “on” time at outdoor temperatures below 35°F.Units are quiet-shift enabled. The compressor is de-energized entering and exiting the defrost cycle, reducing system sounds.Sensor mounted on liquid line determines when defrost cycle is required and also when to terminate cycle.Anti-short cycle, timed-off control incorporated into the board.
24 Volt Transformer40VA transformer furnished and factory installed in control area.
Optional Accessories
iComfort® Equipment Interface Module (EIM)Allows the iComfort® Thermostat to be used with residential packaged units.Contains all necessary relays and controls to operate the system and communicate with the iComfort® Thermostat.
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 5
FEATURES
CONTROLS (continued)NOTE - The iComfort® Equipment Interface Moduleis required for proper operation of iComfort®
Thermostats with residential packaged units.iComfort® S30 ThermostatThe iComfort® S30 Thermostat recognizes and connects conventional heating/cooling products to automatically configure and control the system (based on user-specified settings) for the highest level of comfort, performance and efficiency.Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Also displays service alerts and reminders.A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen.One-Touch Away Mode - A quick and easy way to set the cooling and heating setpoints while away.Weather-On-Demand - Live up-to-date weather data and five-day forecasts.Easy to read 7 in. high definition color display (measured diagonally).High 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® ThermostatThe iComfort Wi-Fi® Thermostat recognizes and connects conventional heating/cooling products to automatically configure and control the system (based on user-specified settings) for the highest level of comfort, performance and efficiency.Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Also displays service alerts and reminders.A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen.One-Touch Away Mode - A quick and easy way to set the cooling and heating setpoints while away.
Weather-On-Demand - Live up-to-date weather data and five-day forecasts.Easy to read 7-inch color screen (measured diagonally). See the iComfort Wi-Fi® Thermostat Product Specifications bulletin in the Controls section for more information.
iComfort® M30 Smart Wi-Fi ThermostatWi-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. 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).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).Smooth Setback Recovery starts system early to achieve setpoint at start of program period.Compressor short-cycle protection (5 minutes).Up to four separate schedules are available plus Schedule IQ™.One-Touch Away Mode - A quick and easy way to set the cooling and heating setpoints while away.Smart Away™ - Uses geo-fencing technology to determine when the homeowner is within a predetermined distance from the home to operate the system when leaving, away and arriving.Amazon® Alexa-enabled, smart-home-compatible. It works with Amazon Echo, Echo Dot and Tap devices.Wi-Fi remote monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets.See the iComfort® M30 Smart Wi-Fi Thermostat Product Specifications bulletin in the Controls section for more information.
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 6
SPECIFICATIONSGeneral Data Model No. LRP14DF24 LRP14DF30 LRP14DF36 LRP14DF42 LRP14DF48 LRP14DF60
1 AHRI Certified to AHRI Standard 210/240: Cooling Ratings - 95°F outdoor air temperature and 80°F db/67°F wb entering indoor coil air. High Temperature Heating Ratings - 47°F db/43°F wb outdoor air temperature and 70°F entering indoor coil air. Low Temperature Heating Ratings - 17°F db/15°F wb outdoor air temperature and 70°F entering indoor coil air.
2 Sound Rating Number rated in accordance with test conditions included in AHRI Standard 270.3 Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and FTC labeling regulations.4 Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.
iComfort® M30 Smart Wi-Fi Thermostat 15Z69 • • • • • •2 Outdoor Temperature Sensor X2658 • • • • • •3 Discharge Air Temperature Sensor 88K38 • • • • • •1 Filters are not furnished and must be field provided. 2 Remote Outdoor Temperature Sensor is used with residential packaged units. Allows the thermostat to display outdoor temperature. Required in dual-fuel applications.3 Used with the iComfort® S30 and iComfort Wi-Fi® Thermostats for optional service diagnostics.
1 AFUE 81% 81% 81%Temperature Rise - °F 40-70 40-70 45-75Gas Supply Connection (FPT) - in. 1/2 1/2 1/2Min. Recommended Gas Supply Pressure 5 in. w.g. Natural Gas, 11 in. w.g. LPG/Propane
OPTIONAL GAS HEAT ACCESSORIES - ORDER SEPARATELYLPG/Propane Conversion Kit 11U77 11U77 11U771 Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and FTC labeling regulations.
Units may be installed at altitudes up to 4500 feet above sea level without any modification. At altitudes above 4500 feet, units must be derated 4% for every 1000 feet above sea level. Example - At an altitude of 6000 feet the unit would require a derate of 24%.NOTE - This is the only permissible derate for these units.
HIGH ALTITUDE DERATE
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 8
FIELD WIRING
DISCONNECTSWITCH
(Not FurnishedBy Lennox)
THERMOSTAT(Optional)
SINGLEPACKAGE
UNIT
A BA − Five Wire Low Voltage (Electronic)
B − Two Wire Power (See Electrical Data Table)If multiple disconnects are used on units with electric heat; there
must be two−wire power provided for each disconnect
NOTE - All air data measured external to unit with dry coil and less filter.
1 MOTOR SPEED TAP SETTINGS (24, 30 and 36 Models with Constant Torque Blower Motor Only)Tap 1 Fan OnlyTap 2 Low Static CoolingTap 3 High Static Cooling
Tap 4 and 5 Taps 4 and 5 designed for Heating mid-point temperature rise:
in. mm in. mm in. mm in. mm in. mmLRP14DF24, 30, 36 36-7/8 937 46-3/4 1187 13-3/8 340 5-7/8 149 16-3/4 425LRP14DF42, 48, 60 40-7/8 1038 55-1/4 1403 18-1/8 467 4-5/8 117 19-3/4 502
Model No.F G H
in. mm in. mm in. mmLRP14DF24, 30, 36 14 356 30-1/8 765 25-1/2 648LRP14DF42, 48, 60 19-1/2 495 34-1/8 857 29-1/2 749
DIMENSIONS - UNIT - INCHES (MM)
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 13
CLIP CURB
UsageA B C D E
in. mm in. mm in. mm in. mm in. mm24, 30, 36 44-5/8 1133 43 1092 18 457 44 1118 37 94042, 48, 60 53-1/8 1349 51 1295 24 610 52-1/2 1334 41 1041
UsageF G
in. mm in. mm24, 30, 36 14 356 16-3/4 42542, 48, 60 19-1/2 495 19-3/4 502
33(838)
33(838)
10(254)
8(203) 4
(102)
44-5/8(1133)
8 (203)14 (356)
SUPPLYOPENING
RETURNOPENING
InsulatedPan
A
Unit MountingBrackets (4)
Unit MountingBrackets (4)
44(1118)
1-7/8(48)
11-5/8(295)
3-1/8(79)
B
C
D
E
F
G
NOTE - Roof deck may be ommitted within confines of curb.
CURB FRAME
WOOD NAILER
COUNTER FLASHING(FIELD SUP PLIED)
GNI FOOR FELT(FIELD SUP PLIED)
RIGID IN SU LA TION(FIELD SUP PLIED)
CANT STRIP(FIELD SUP PLIED)
TYPICAL FLASHING DETAIL
DIMENSIONS - ACCESSORIES - INCHES (MM)
LRP14DF - 2 to 5 Ton Dual-Fuel / Page 14
DIMENSIONS - ACCESSORIES - INCHES (MM)
SUPPLYOPENING
RETURNOPENING
ADJUSTABLE FROM 2/12 to 6/12 PITCH
SIDES AND BACKFLANGE 6 in. (152 mm)
C
46-1/2(1181)
A
B 1 (25)TYP
FRONT FLANGE 8 in. (203 mm)
MINIMUM HEIGHT 4 in. (102 mm)
DECK PAN UNIT HOLDDOWN BRACKET (4)
12(305)
17(432)
D E F
G
4(102)
ADJUSTABLE PITCH ROOF CURB
UsageA B C D
in. mm in. mm in. mm in. mm24, 30, 36 47 1194 34-1/2 876 5 127 33-3/4 85742, 48, 60 55-1/4 1403 42-3/8 1076 10 254 33 838
Model No.E F G
in. mm in. mm in. mm24, 30, 36 14-1/2 368 18-3/4 476 18 457
For the latest technical information, www.lennoxdavenet.com
Contact us at 1-800-4-LENNOX
REVISIONS
REVISIONS
Sections Description of Change
ApprovalsAdded statements about South Coast Air Quality Management District (SCAQMD) and San Joaquin Valley Air Pollution Control District (SJVAPCD) rules for furnaces with more than 14 ng/J ratings.