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Page 1 

INSTALLATION 

INSTRUCTIONS

Table of Contents

Unit Dimensions ..........................................................2

Roof Curb Dimensions ................................................4

Adjustable Roof Curb Dimensions...............................6

Installation ...................................................................7

Venting.........................................................................9

Duct System ..............................................................10

Condensate Drain......................................................11

Gas Piping .................................................................11

Electrical Wiring .........................................................12

Heating Start-Up  .......................................................13

Operation ...................................................................15

Maintenance – LRP16GE ..........................................18

Blower Performance ..................................................20

Wiring Diagram – LRP16GE .....................................21

LRP16HP ...................................................................22

Sequence of Operation..............................................23

Defrost System ..........................................................25

System Performance .................................................27

Maintenance – LRP16HP ..........................................27

Wiring Diagram – LRP16HP ......................................30

LRP16G(E/X) / LRP16HP UNITS

RESIDENTIAL PACKAGED UNITS

Gas/Electric – Heat Pump

508202-01

8/2022

©2022 Lennox Industries Inc. 

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT  

FOR FUTURE REFERENCE

 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, or service agency.

 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.

Содержание LRP16GE

Страница 1: ...ustries Inc Dallas Texas USA THIS MANUAL MUST BE LEFT FOR FUTURE REFERENCE 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 or service agency IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrige...

Страница 2: ...0 17 07 13 44 13 44 14 32 16 06 6 20 40 89 21 63 13 21 TYPICAL DRAIN LOCATION CONDENSATE DRAIN 3 4 NPT 5 75 3 55 4 12 TYPICAL VENT HOOD SIDE VIEWS 11 49 2 33 47 66 1 98 16 77 2 48 14 02 47 66 POWER ENTRY GAS ENTRY 6 94 2 33 11 49 16 07 18 52 3 25 4 56 20 31 21 06 23 19 RETURN AIR SUPPLY AIR TOP VIEW Unit Dimensions Small Base ...

Страница 3: ...TAGE ENTRY 7 8 DIA KNOCKOUT GAS SUPPLY 44 89 21 63 13 21 TYPICAL DRAIN LOCATION CONDENSATE DRAIN 3 4 NPT 5 75 3 55 4 12 TYPICAL VENT HOOD SIDE VIEWS TOP VIEW POWER ENTRY GAS ENTRY RETURN AIR 2 11 19 49 2 39 2 33 11 49 16 07 18 52 6 94 3 25 10 06 19 49 SUPPLY AIR 25 81 26 56 28 68 11 49 2 33 47 66 56 13 Unit Dimensions Large Base ...

Страница 4: ...m 44 3 8 1127 44 3 8 1127 16 7 8 429 13 7 8 352 2 1 8 54 11 1 2 287 SUPPLY OPENING RETURN OPENING 8 203 14 356 18 457 24 610 3 4 19 1 25 5 1 2 140 5 3 4 146 11 1 2 287 17 1 4 438 1 3 8 35 3 3 4 95 13 330 3 76 NOTE If bottom entry is used condensate from the heat exchanger may leak during warm ambient temperatures in humid climates Ensure that bottom entry is watertight if used Roof Curb Dimensions...

Страница 5: ... 13 in 76 x 330 mm 52 7 8 1343 44 3 8 1127 19 1 2 380 11 1 2 287 19 1 2 380 2 1 8 54 11 1 2 287 SUPPLY OPENING RETURN OPENING 8 203 14 356 18 457 24 610 3 3 4 95 22 7 8 581 7 178 3 4 19 1 25 NOTE If bottom entry is used condensate from the heat exchanger may leak during warm ambient temperatures in humid climates Ensure that bottom entry is watertight if used Roof Curb Dimensions Large Base ...

Страница 6: ... 8 203 SIDES AND BACK FLANGE 6 152 UNIT BASE RAIL CLIPS 4 NOTE Minimum Height 4 102 UNIT BASE RAIL CLIPS 4 Usage A B C in mm in mm in mm 24 36 42 7 8 1089 13 7 8 352 16 7 8 429 48 60 51 3 8 1305 19 1 2 495 19 1 2 495 NOTE Roof deck may be omitted within confines of curb NOTE If bottom entry is used condensate from the heat exchanger may leak during warm ambient temperatures in humid climates Ensur...

Страница 7: ...units are not suitable for use with conventional venting systems Inspection As soon as the unit is received it should be inspected for possible damage during transit If damage is evident the extent of the damage should be noted on the carrier s freight bill A separate request for inspection by the carrier s agent should be made in writing Location Use the following guidelines to select a suitable ...

Страница 8: ...ts may be installed on combustible floors Units must be installed outdoors Clearance to combustibles below the unit flue is 10 inches since the flue points down Do not permit overhanging structures or shrubs to obstruct condenser air discharge outlet combustion air inlet or vent outlet Table 1 Minimum Clearances Clearance to Combustibles Clearance for Service Access Front of unit 0 in 24 in Back o...

Страница 9: ...struction bag see Figure 2 Vent Hood Attach with Screws Figure 2 Installing the Vent Cover Rigging Unit Exercise care when moving the unit Do not remove any packaging until the unit is near the place of installation 1 Connect rigging to the unit base rails using both holes in each corner 2 All panels must be in place for rigging 3 Place field provided spreaders in place Spreaders must be of adequa...

Страница 10: ...filter rack kit If an existing gas furnace is being removed from a common venting system when this packaged unit is installed then read and follow the instructions in the Removal of Unit from Common Venting System section that follows Otherwise you may skip this section NOTE Removal of Unit from Common Venting System When an existing furnace is removed from a common venting system serving other ap...

Страница 11: ... rating plate Gas Piping Recommendations A drip leg and a ground joint union must be installed in the gas piping A ground joint union is recommended by the manifold valve When required by local codes a manual shutoff valve may have to be installed outside of the unit Use pipe thread sealing compound resistant to propane gas sparingly on male threads Never use a flame to check for gas leaks Explosi...

Страница 12: ...the National Electrical Code ANSI NFPA No 70 latest edition Canadian Electrical Code Part 1 CSA C22 1 latest edition or local codes where they prevail Use wiring with a temperature limitation of 75 C minimum Run the 208 or 230 volt 60 hertz electric power supply through a fused disconnect switch to the control box of the unit and connect as shown in the wiring diagram located on the inside of the ...

Страница 13: ...ed insulated wires 18 AWG should be used to connect the thermostat to the unit Compressor Units are shipped with compressor mountings factory adjusted and ready for operation Do not loosen compressor mounting bolts CAUTION Figure 6 Typical Wiring Connections R G W W2 Y2 Y1 C R G W W2 Y2 Y1 C THERMOSTAT OUTDOOR UNIT Red Blue Yellow Yellow w Blue Stripe Brown White Green CAUTION required by the indo...

Страница 14: ...gas valve and connecting a water manometer or gauge Under no circumstances should the final manifold pressure vary more than 0 3 w c from the above specified pressures To adjust the regulator turn the adjusting screw on the regulator clockwise to increase pressure and input or counterclockwise to decrease pressure and input See Figure 7 to assist in locating the regulator on the gas valve Check th...

Страница 15: ...hroughout the external static range A particular CFM can be obtained by positioning jumpers COOL HEAT and ADJUST on the blower control The HEAT and COOL jumpers are labeled A B C and D Each of the numbers corresponds with an air volume CFM setting The ADJUST jumper is labeled Test and Norm The and pin settings are used to add or subtract a percentage of the CFM selected The Test jumper is used to ...

Страница 16: ...educe the selected air flow rate by 25 percent when humidity levels are high An LED D1 lights when the blower is operating in the dehumidification mode Cooling System The cooling system is a factory charged with HFC R 410A The compressor is hermetically sealed and base mounted with rubber insulated bolts Cooling Sequence of Operation When the thermostat calls for cooling R is closed to Y1 see the ...

Страница 17: ...onds of the ignition trial If the flame is established within 10 seconds the control de energizes the spark If flame is not established within 10 seconds the gas valve and spark are de energized and the ignition control initiates a 30 second inter purge sequence Approximately 30 seconds after the flame has been established the circulating air blower starts and the combustion air inducer is switche...

Страница 18: ... need cleaning Sooting of a gas appliance is highly irregular and once cleaned the cause of the sooting must be determined If the heat exchanger should become sooted it can be cleaned as follows 1 Remove the burner assembly as outlined in Burner Instructions on Page 15 2 Remove the combustion blower 3 At the bottom of the heating section remove the screws holding the flue collector box Carefully r...

Страница 19: ...peration Call for heat 2 Flash Two flashes in second with 1 second pause System lockout Failed to detect or sustain flame 3 Flash Three flashes in 1 5 seconds with 1 second pause Pressure switch senses incorrect pressure or gas valve coil is open 4 Flash Four flashes in 2 seconds with 1 second pause High limit or rollout switch open 5 Flash Five flashes in 2 5 seconds with 1 second pause Flame sen...

Страница 20: ...500 400 1260 1080 900 720 1400 1200 1100 975 630 540 450 360 048 Blower Performance 0 through 0 80 in w g External Static Pressure Range 1980 1760 1540 1320 1350 1200 1100 1000 990 880 770 660 NORM 1800 1600 1400 1200 1350 1200 1100 1000 900 800 700 600 1620 1440 1260 1080 1350 1200 1100 1000 810 720 630 540 060 Blower Performance 0 through 0 80 in w g External Static Pressure Range 2200 1980 1760...

Страница 21: ...Page 21 Figure 9 Wiring Diagram Single Phase Wiring Diagram LRP16GE ...

Страница 22: ... being pulled through the condensate line will prevent positive drainage without a proper trap The condensate drain line must be properly trapped routed to a suitable drain and primed prior to unit commissioning NOTE Install drain lines and trap so they do not block service access to the unit See Figure 4 for proper drain arrangement The drain line must pitch to an open drain or pump to prevent cl...

Страница 23: ...DJUST jumper is labeled Test and Norm The and pin settings are used to add or subtract a percentage of the CFM selected The Test jumper is used to operate the motor in the test mode Figure 12 shows the blower control The CFM LED located on the blower control flashes one time per 100 cfm to indicate selected blower speed For example if the unit is operating at 1200 CFM the CFM LED will flash 12 tim...

Страница 24: ...re is no demand for heating or cooling the blower control will provide 50 percent of the COOL CFM selected DEHUMIDIFICATION The blower control includes an HUM terminal which provides for connection of a humidistat The JV1 resistor on the blower control must be cut to activate the HUM terminal The humidistat must be wired to open on humidity rise When the dehumidification circuit is used the variab...

Страница 25: ...ol Board 24V TERMINAL STRIP CONNECTIONS DIAGNOSTIC LEDS HIGH PRESSURE SWITCH TEST PINS DEFROST TIMING PINS P1 REVERSING VALVE DEFROST THERMOSTAT S6 LOW PRESSURE SWITCH COMPRESSOR DELAY PINS S4 S87 SERVICE LIGHT CONNECTIONS Defrost Thermostat The defrost thermostat is located on the evaporator coil When the defrost thermostat senses 35 F or cooler the thermostat contacts close and send a signal to ...

Страница 26: ...the compressor delay jumper is removed NOTE The 30 second off cycle is not functional when jumpering the TEST pins Time Delay The defrost control includes a compressor timer which ensures the compressor is off for a minimum amount of time between operating cycles The timed off delay is 5 minutes long The delay helps to protect the compressor from short cycling in case the power to the unit is inte...

Страница 27: ...nance normally consists of changing or cleaning the filters and cleaning the evaporator coil On occasion other components may also require cleaning Filters Filters are not supplied with the unit Inspect once a month Replace disposable or clean permanent type as necessary Do not replace permanent type with disposable Motors Indoor and outdoor fan and vent motors are permanently lubricated and requi...

Страница 28: ...149 150 36 132 134 136 137 138 139 140 142 144 145 147 148 48 136 138 140 142 143 144 145 147 148 149 150 151 60 134 135 137 138 139 140 141 142 144 145 147 148 24 Liquid 237 257 278 298 306 320 343 366 392 419 445 471 36 239 260 280 301 309 323 347 370 397 424 451 478 48 243 264 284 305 313 327 351 374 401 428 454 481 60 249 270 292 313 322 337 361 385 414 443 472 501 Table 6 Cooling Performance ...

Страница 29: ... 36 26 33 40 50 54 61 68 75 83 95 103 117 131 48 28 36 43 53 57 65 72 79 89 102 107 116 125 60 31 39 46 56 60 68 75 82 89 99 106 117 128 24 Liquid 264 271 279 289 294 301 309 316 324 335 340 348 357 36 272 282 291 305 311 321 330 340 348 359 365 374 383 48 283 291 298 308 312 320 327 334 342 353 358 367 376 60 285 295 304 316 321 330 339 348 357 370 375 383 392 Table 7 Heating Performance HP Model...

Страница 30: ...k in Y2 stage compressor operation during the heating mode when the outdoor coil temp is at or below 30 F and opens at around 40 F 5 F To correct the issue the factory will move the white lock in switch wire from pin 9 on the defrost relay to the 24V hot side of the compressor contactor This will be the same connection point on the contactor as the yellow Y1 OUT wire that originates from the defro...

Страница 31: ...Page 31 Figure 14 HP Wiring Diagram Original Wiring ...

Страница 32: ...Page 32 Figure 15 HP Wiring Diagram Field Factory Correction Wiring ...

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