Table of Contents
Advertisement
Quick Links
Service Literature
LRP13HP/LRP13AC/LRP13GE/LRP13GN/LRP15GE/LRP15HP SERIES UNITS
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
WARNING
Electric Shock Hazard. Can cause injury or
death. Unit must be properly grounded in
accordance with national and local codes.
Line voltage is present at all components when
unit is not in operation on units with single-
pole contactors. Disconnect all remote electric
power supplies before opening access panel.
Unit may have multiple power supplies.
UNIT INFORMATION
100199
3/2025
Table of Contents
Specifications - LRP13HP ..............................................5
Specifications - LRP13AC ..............................................6
Specifications - LRP13GE / LRP13GX .........................7
Specifications - LRP13GN ............................................8
Specifications - LRP15GE / LRP15GX .........................9
Specifications - LRP15HP ..........................................10
LRP15HP ..................................................................... 11
Gas Heat Capacities - LRP13GE Only ........................ 11
Gas Heat Capacities - LRP15GE Only ....................... 11
Gas Heat Capacities - LRP13GN Only ....................... 11
Electrical .....................................................................12
Typical Parts Arrangement ..........................................18
Unit Applications ..........................................................21
Blower Data - LRP13HP .............................................26
Blower Data - LRP13AC .............................................27
Blower Data - LRP13GE / LRP13GX...........................28
Blower Data - LRP13GN..............................................29
Blower Data - LRP15GE / LRP15GX...........................30
Blower Data - LRP15HP ..............................................31
Wiring Diagrams and Sequence of Operation ..............42
The LRP13/15 series packaged units are available in siz-
es ranging from 2 through 5 tons (7.0 through 17.6 kW).
The LRP13/15 unit is designed for R-454B refrigerant and
for outdoor residential use only. Units can be installed
at ground level or on rooftops. The LRP13 units utilize a
scroll compressor. LRP15GE/GX/HP units utilize a two-
stage compressor. Information contained in this manual is
intended for use by qualified service technicians only. All
specifications are subject to change. Procedures outlined
in this manual are presented as a recommendation only
and do not supersede or replace local or state codes.
Page 1
LRP13HP/AC/GE/GN
LRP15GE/HP
Advertisement
Table of Contents
Related Manuals for Lennox LRP13HP Series
Summary of Contents for Lennox LRP13HP Series
-
Page 1: Table Of Contents
UNIT INFORMATION LRP13HP/AC/GE/GN 100199 LRP15GE/HP 3/2025 Service Literature LRP13HP/LRP13AC/LRP13GE/LRP13GN/LRP15GE/LRP15HP SERIES UNITS Table of Contents Specifications - LRP13HP ..........5 Specifications - LRP13AC ..........6 Specifications – LRP13GE / LRP13GX ......7 Specifications – LRP13GN ..........8 Specifications – LRP15GE / LRP15GX ......9 Specifications – LRP15HP ..........10 Electric Heat Capacities –... - Page 2 WARNING CAUTION • Do not use means to accelerate the defrosting pro- Under no circumstances shall potential sources of cess or to clean, other than those recommended by ignition be used in the searching for or detection of the manufacturer. refrigerant leaks.
-
Page 3: Refrigerating System
IMPORTANT IMPORTANT When breaking into the refrigerant circuit to make When removing refrigerant from a system, either for repairs – or for any other purpose – conventional servicing or decommissioning, it is recommended good procedures shall be used. However, for flammable practice that all refrigerants are removed safely. - Page 4 IMPORTANT IMPORTANT Prior to beginning work on systems containing Where electrical components are being changed, they FLAMMABLE REFRIGERANTS, safety checks are shall be fit for the purpose and to the correct specification. necessary to ensure that the risk of ignition is minimized. At all times the manufacturer’s maintenance and service guidelines shall be followed.
-
Page 5: Specifications - Lrp13Hp
Specifications - LRP13HP Size Nominal Tonnage Cooling / Cooling Total capacity - Btuh 23,000 28,600 34,000 39,500 45,500 56,000 Heating SEER2 (Btuh/Watt) 13.4 13.4 13.4 13.4 13.4 13.4 Performance ¹ EER2 (Btuh/Watt) 10.6 10.6 10.6 10.6 10.6 10.6 High Total capacity - Btuh 21,600 25,800 32,600... -
Page 6: Specifications - Lrp13Ac
Specifications - LRP13AC Size Nominal Tonnage Cooling Total cooling capacity - Btuh 22,600 28,400 33,400 40,000 44,500 57,500 Performance SEER2 (Btuh/Watt) 13.4 13.4 13.4 13.4 13.4 13.4 ¹ EER2 (Btuh/Watt) 10.6 10.6 10.6 10.6 10.6 10.6 Sound Rating Number Refrigerant Type R-454B R-454B... -
Page 7: Specifications - Lrp13Ge / Lrp13Gx
Specifications – LRP13GE / LRP13GX Size Nominal Tonnage Cooling Total cooling capacity - Btuh 22,600 28,400 33,400 40,000 44,500 57,500 Performance SEER2 (Btuh/Watt) 13.4 13.4 13.4 13.4 13.4 13.4 ¹ EER2 (Btuh/Watt) 10.6 10.6 10.6 10.6 10.6 10.6 Sound Rating Number Refrigerant Type R-454B... -
Page 8: Specifications - Lrp13Gn
Specifications – LRP13GN Size Nominal Tonnage Gas Heat Available - See Page Page 11 -054 -054 -054 -072 -072 -072 Cooling Total cooling capacity - Btuh 22,600 28,400 33,400 40,000 44,500 57,500 Performance SEER2 (Btuh/Watt) 13.4 13.4 13.4 13.4 13.4 13.4 ¹... -
Page 9: Specifications - Lrp15Ge / Lrp15Gx
Specifications – LRP15GE / LRP15GX Size Nominal Tonnage Gas Heat Available - See Page 11 -072 -072, -090 -108 -126 Cooling Total cooling capacity - Btuh 23,800 34,000 46,000 57,000 Performance ¹ SEER2 (Btuh/Watt) 16.0 15.2 15.2 15.2 ¹ EER2 (Btuh/Watt) 12.0 11.5 11.5... -
Page 10: Specifications - Lrp15Hp
Specifications – LRP15HP Size Nominal Tonnage Cooling / Cooling Total capacity - Btuh 23,000 34,200 45,000 57,000 Heating SEER2 (Btuh/Watt) 16.0 15.2 15.2 15.2 Performance ¹ EER2 (Btuh/Watt) 12.0 11.5 11.5 11.5 Total unit watts 1875 3025 3910 4950 High Total capacity - Btuh 21,400 33,200... -
Page 11: Electric Heat Capacities - Lrp13Hp And Ac Models - Lrp15Hp
Electric Heat Capacities – LRP13HP and AC Models – LRP15HP Input 5 kW 7.5 kW 10 kW 15 kW 20 kW Voltage No of KBtuh No of KBtuh No of KBtuh No of KBtuh No of KBtuh Steps Input Output Steps Input Output... -
Page 12: Electrical
Electrical ELECTR IC H EAT DATA - LRP13HP Only Model LRP13HPK24 LRP13HPK30 LRP13HPK36 Voltage 208V 240V 208V 240V 208V 240V Maximum Overcurrent 5 kW Circuit 1 30.0 Protection (MOCP) 7.5 kW Circuit 1 40.0 10 kW Circuit 1 50.0 15 kW Circuit 1 - - - - - - - - -... - Page 13 ELECTR IC H EAT DATA - LRP13A C On ly Model LRP13ACK24 LRP13ACK30 LRP13ACK36 Voltage 208V 240V 208V 240V 208V 240V Maximum Overcurrent 5 kW Circuit 1 Protection (MOCP) 7.5 kW Circuit 1 10 kW Circuit 1 15 kW Circuit 1 - - - - - - - - -...
- Page 14 ELECT RICA L DATA - LRP13GE Only Line voltage data (Volts-Phase-Hz) 208/230V-1-60 Maximum overcurrent protection (MOCP) amps Minimum Circuit Ampacity (MCA) 14.8 17.5 22.9 26.5 28.7 39.7 Compressor Rated load amps 11.1 14.3 16.7 18.0 24.3 Outdoor Coil Fan Motor Full load amps Indoor Blower Motor Full load amps...
-
Page 15: Indoor Blower Motor
ELECT RICA L DATA - LRP15GE Only Line voltage data (Volts-Phase-Hz) 208/230V-1-60 Maximum overcurrent protection (MOCP) amps Minimum Circuit Ampacity (MCA) 15.1 21.5 28.2 37.5 Compressor Rated load amps 10.2 14.5 18.3 25.2 Locked rotor amps 58.3 83.0 126.5 151.0 Outdoor Coil Full load amps Fan Motor... - Page 16 ELECTR IC H EAT DATA - LRP15HP Only Model LRP15HPK24 LRP15HPK36 LRP15HPK48 LRP15HPK60 Voltage 208V 240V 208V 240V 208V 240V 208V 240V Maximum Overcurrent 5 kW Circuit 1 Protection (MOCP) 7.5 kW Circuit 1 10 kW Circuit 1 15 kW Circuit 1 - - - - - - Circuit 2...
-
Page 17: High Altitude Derate
7000 3.21 1.83 1891 9.18 5.25 7500 3.19 1.82 1853 9.12 5.21 * Consult local factory for actual heating value. Furnace input = Input Factor X Nameplate Input Above 7500 feet, call Lennox Technical Services for additional assistance. Page 17... -
Page 18: Typical Parts Arrangement
Typical Parts Arrangement COMPRESSOR COMPARTMENT BLOWER COMPARTMENT CONDENSER FAN ASSEMBLY CONDENSATE PAN and DRAIN HEAT EXCHANGER ACCESS DOOR VENT HOOD CONDENSER COIL CONTROL BOX HEATING COMPARTMENT FIGURE 1. Typical Parts Arrangement – LRP13GE / LRP13GN TRANSFORMER CONTACTOR DEFROST CONTROL HP OR BLOWER MOTOR CONTROL BOARD (LRP15 ONLY) RDS CONTROL BOARD... - Page 19 TRANSFORMER CONTACTOR DEFROST CONTROL HP OR BLOWER MOTOR CONTROL BOARD (LRP15 ONLY) IGNITION CONTROL (GE/GN ONLY) RDS CONTROL BOARD LOW VOLTAGE CONNECTION BOX CAPACITOR (AC UNIT ONLY) RELAY FIGURE 3. Typical Control Box - Heat Pump Units Page 19...
- Page 20 Parts Arrangement – Contd. FLAME SENSOR LOW PRESSURE SWITCH FILTER / DRIER FLAME ROLLOUT LOW PRESSURE SWITCH GAUGE PORT GAS VALVE HIGH PRESSURE SWITCH HIGH PRESSURE GAUGE PORT ORIFICE BURNERS COMPRESSOR GAS MANIFOLD IGNITER FIGURE 7. Compressor Compartment – FIGURE 5. Burner Box Components – AC, GE and GN Units GE Units FILTER / DRIER...
-
Page 21: Unit Applications
Refer to Product Specifications (EHB) for auxiliary heat Unit Applications selections. LRP13HP LRP15GE LRP13HP, 2 through 5 ton (7.0 through 17.6kW) model LRP15GE, 2 through 5 ton (7.0 through 17.6kW) model units, are single phase packaged heat pump units de- units, are single phase packaged air conditioning units signed for outdoor installation on a slab or rooftop in res- designed for outdoor installation on a slab or rooftop in... - Page 22 The LRP13GE/LRP13GN and LRP15GE units include an Approximately 30 seconds after the flame has been es- ignition control which controls the combustion air inducer, tablished, the circulating air blower starts. The ignition gas valve and spark electrode. It receives signals from the control inputs are continuously monitored to ensure that limit switch, the rollout switch, the pressure prove switch the limit switch, rollout switch and pressure switch are all...
- Page 23 IGNITION CONTROL (A3) FIGURE 9. Ignition Control – Gas-Heat Units Only TABLE 2. LED Diagnostic Codes – Ignition Control WARNING Slow Flash - 1 per second Normal operation, no call for Electric Shock Hazard. Can cause injury or heat death. Unit must be properly grounded in Fast Flash - 2 per second Normal operation, call for accordance with national and local codes.
- Page 24 BLOWER CONTROL BOARD (A54) – LRP15 UNITS ADJUST SELECTOR PINS (Setting affects both heat− ing and cooling modes) HEATING SPEED DIAGNOSTIC SELECTOR PINS COOLING SPEED SELECTOR PINS FIGURE 10. Blower Control Board (A54) – ECM Motor – LRP15GE / LRP15HP Blower Control –...
-
Page 25: Continuous Fan
At times the light may appear to flicker or glow. This takes HEAT place when the control is communicating with the motor The HEAT jumper is used to determine CFM during gas between cycles. This is normal operation. heat operation only. These jumper selections are activat- Read through the jumper settings section before adjusting ed only when W1 is energized. -
Page 26: Blower Data - Lrp13Hp
Blower Data – LRP13HP Air Volume (cfm) at Various External Static Pressures - in. w.g. Model Blower Tap Tap 1 (Fan Only) - - - - - - Tap 2 (Low Cooling) LRP13HP24 Tap 3 (High Cooling) 1000 ¹ Tap 4 (Low Electric Heat) - - - - - - - - -... -
Page 27: Blower Data - Lrp13Ac
Blower Data – LRP13AC Air Volume (cfm) at Various External Static Pressures - in. w.g. Model Blower Tap Tap 1 (Fan Only) - - - - - - - - - Tap 2 (Low Cooling) LRP13AC24 Tap 3 (High Cooling) ¹... -
Page 28: Blower Data - Lrp13Ge / Lrp13Gx
Blower Data – LRP13GE / LRP13GX Air Volume (cfm) at Various External Static Pressures - in. w.g. Model Blower Tap Tap 1 (Fan Only) - - - - - - - - - - - - - - - LRP13GE24 Tap 2 (Low Cooling) LRP13GX24 Tap 3 (High Cooling) -
Page 29: Blower Data - Lrp13Gn
Blower Data – LRP13GN Air Volume (cfm) at Various External Static Pressures - in. w.g. Model Blower Tap Tap 1 (Fan Only) Tap 2 Cooling (Low Static) Tap 3 Cooling (High Static) LRP13GN24 Tap 4 Heating (Low Static) Rise ( °F) 1005 Tap 5 Heating (High Static) Rise ( °F) -
Page 30: Blower Data - Lrp15Ge / Lrp15Gx
Blower Data – LRP15GE / LRP15GX LRP15GE24, LRP15GX24 Blower Performance 0 through 0.80 in. w.g. External Static Pressure Range Blower Control Jumper Speed Positions “ADJUST” Jumper “COOL” Speed - cfm “HEAT” Speed - cfm “CONTINUOUS FAN” Speed - cfm Setting 1100 1100 1000... -
Page 31: Blower Data - Lrp15Hp
Blower Data – LRP15HP LRP15HP24 Blower Performance 0 through 0.80 in. w.g. External Static Pressure Range Blower Control Jumper Speed Positions “ADJUST” Jumper “COOL” Speed - cfm “HEAT” Speed - cfm “CONTINUOUS FAN” Speed - cfm Setting 1100 1150 1035 NORM 1000 1000... -
Page 32: Defrost Control
DEFROST CONTROL CMC1 Defrost Control NOTE - For geographic areas that experience low tem- Defrost Interval Timing Pins perature and high humidity conditions (below 32°F and above 80% RH), the defrost timer pin must be field set at installation to a 60 or 30 minute defrost interval in order to Test Pins ensure reliable system operation while in heating mode. -
Page 33: Defrost System
Defrost System TEST PINS Demand Defrost System AMBIENT DEFROST THERMOSTAT The demand defrost system measures differential TERMINATION PINS PIN SETTINGS temperatures to detect when the system is performing SENSOR poorly because of ice build-up on the outdoor coil. The PLUG-IN (COIL &... - Page 34 Defrost Temperature Termination Shunt (Jumper) • Time—If 6 hours of heating mode compressor run Pins time has elapsed since the last defrost cycle while The defrost board selections are: 50, 70, 90, and 100°F the coil temperature remains below 35°F (2°C), the (10, 21, 32 and 38°C).
-
Page 35: Blower Compartment
Position Definitions for P3 Header Compressor B1 – LRP15GE/HP Units • Connecting P3-1 and P3-2 will set the nominal defrost All LRP15GE units utilize a two-stage Copeland scroll compressor. Compressors are energized by the K1 con- time to 140 seconds. tactor found in the unit control box. -
Page 36: Modes Of Operation
Low Pressure Switch S79 (LRP13GE, AC, LRP15GE responding to thermostat demand signals. The RDS Non- Units) Communicating Blower Control Board has not detected a refrigerant leak. S79 is a N.C. auto-reset low pressure switch located on the suction line. The switch shuts off the compressor when Leak Detected (Mitigation) suction pressure falls below the factory setting. -
Page 37: Sensor Maintenance
TABLE 6 Red LED Diagnostic Codes / Troubleshooting Applies to Red Wink Individual Issue Action Sensor(s) RDS Sensor Fault Replace sensor Check VFD for alarms, remedy alarms present. If float switch is installed, verify proper VFD alarm / Drain pan switch mounting location, depth in pan, unobstructed condensate drain line;... -
Page 38: Electric Heat
ELECTRIC HEAT electrical voltage is broken on both sides if an element goes to ground. Matchups and Ratings Circuit Breaker CB1 and CB2 (option) PHK-15, -20 Matchups and ratings are listed with “ELECTRICAL DATA”. Line voltage connections are made to circuit breakers CB1 and CB2 in electric heat sections with circuit break- Electric Heat Components ers. -
Page 39: Control System Diagnostics
TABLE 11 Control System Diagnostics Heat Pump Cooling System Performance Values - LED Status Flashing Rate Fault Description LRP13HP / LRP15HP One flash per Normal operation: Slow Flash Suction Superheat Liquid Subcooling second No call for heat Model + / - 3° + / - 2°... - Page 40 3 - Test capacitor. Replace as necessary. 5 - should be checked with all gas appliances in the building at full fire. At no time should the supply gas 4 - Inspect contactor contacts for pitting or burn marks. pressure exceed 10.5 inches w.c., nor drop below 5.0 Replace as necessary.
- Page 41 3 - After allowing the unit to stabilize for five minutes, BTU/HR = Cubic Feet Per Revolution X 3600 X Heating Value record the manifold pressure. 4 - Disconnect heating demand as soon as an accurate reading has been obtained. INPUT No.
-
Page 42: Wiring Diagrams And Sequence Of Operation
Wiring Diagrams and Sequence of Operation LRP13HP Unit Wiring Diagram – Constant Torque Blower FIGURE 20 Page 42... - Page 43 LRP13AC Unit Wiring Diagram – Constant Torque Blower FIGURE 21 Page 43...
- Page 44 LRP13GE Unit Wiring Diagram – Constant Torque Blower FIGURE 22 Page 44...
- Page 45 LRP15GE Wiring Diagram FIGURE 23 Page 45...
- Page 46 LRP15GE Unit Wiring – Single Phase FIGURE 24 Page 46...
- Page 47 LRP15HP Wiring Diagram FIGURE 25 Page 47...
- Page 48 LRP15HP Unit Wiring – Single Phase FIGURE 26 Page 48...
- Page 49 A-PHK Electric Heat FIGURE 27 Page 49...
- Page 50 B-PHK Electric Heat – Older Models FIGURE 28 Page 50...
- Page 51 SEQUENCE OF OPERATION – SINGLE-STAGE COM- NOTE - On early defrost controls, the defrost timing jump- PRESSOR er must be in the 90-minute defrost interval before testing the defrost mode or the control will not enter defrost test NOTE - The combustion air inducer is energized for 30 mode.
- Page 52 First and second stage cooling operate independent of Second Stage Cooling (High Capacity) each other and can modulate back and forth according to Compressor is operating in first stage cooling. Second the thermostat demand. stage thermostat demand sends voltage to rectifier plug First Stage Cooling (Low Capacity) D4.
-
Page 53: Lrp13Gn - Heating Components And Operation
LRP13GN – Heating Components and Operation Gas Valve The gas valve is factory set and does not require adjust- ment. See the table below for pressures. The gas valve should completely and immediately cycle off in the event of gas or power failure. The manual shut-off knob or switch can be used to immediately shut off gas supply. - Page 54 Operating Signal Pressure and Manifold Pressure Measurement High Signal Pressure Manifold Pressure FIGURE 32 Manifold Pressure A unit’s Manifold Pressure is the product of the Signal Pressure x the Gas Valve’s Amplification Factor (MP = ∆P x AF). If the manifold pressure is not within specification, it will be helpful to determine if it is the Signal Pressure or the Amplification Factor that is the culprit.
- Page 55 3 - Select indoor blower speed tap, which provides a d. Slide the gas valve switch to the “ON” position and initi- ate a call for heat. During steady state operation, mani- temperature rise within the range specified on the fold pressure should be: rating plate.
Need help?
Do you have a question about the LRP13HP Series and is the answer not in the manual?
Questions and answers