Lennox 13HPX Installation Instructions Manual Download Page 22 | Manualshive

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Page 22

506727−01

HIGH PRESSURE SWITCH
(S4) LIQUID LINE

LOW PRESSURE SWITCH
(S87) SUCTION LINE

REVERSING VALVE (L1)

DEFROST THERMOSTAT (S6)

THERMAL SWITCH (S173)

CRANKCASE HEATER

(HR1) (−060 ONLY)

GROUND WIRE

(GREEN)

CRANKCASE THERMOSTAT
(S40) − −042, 048, AND −060
UNITS ONLY

Figure 17. Typical Unit Factory Wiring Compressor with Thermal Protection Switch (S173)

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Summary of Contents for 13HPX

Page 1: ...previously charged with HCFC 22 must be flushed INSTALLATION INSTRUCTIONS Merit Series 13HPX Units HEAT PUMP UNITS 506727 01 06 11 Supersedes 04 11 Litho U S A TABLE OF CONTENTS Shipping and Packing...

Page 2: ...s mm SIDE VIEW A B OPTIONAL UNIT STANDOFF KIT 4 FIELD INSTALLED SIDE VIEW C A Model No A B C 13HPX 018 230 24 1 4 616 33 1 4 845 32 1 2 826 13HPX 024 230 24 1 4 616 33 1 4 845 32 1 2 826 13HPX 030 230...

Page 3: ...LY Figure 1 Typical Unit Parts Arrangement Caps and Fasteners Torque Requirements IMPORTANT Only use Allen wrenches of sufficient hardness 50Rc Rockwell Harness Scale minimum Fully insert the wrench i...

Page 4: ...stem cap with an appropriately sized wrench 2 Use a service wrench with a hex head extension 3 16 for liquid line valve sizes and 5 16 for vapor line valve sizes to back the stem out counterclockwise...

Page 5: ...tem Remove existing refrigerant using one of the following procedures RECOVERING REFRIGERANT 1 2 3 NOTE Use the recovery machine instructions to make the correct manifold gauge set connections for rec...

Page 6: ...lope tolerance as described in figure 5 detail B ROOF MOUNTING Install the unit a minimum of 4 inches 102 mm above the roof surface to avoid ice build up around the unit Locate the unit above a load b...

Page 7: ...bers 94J45 4 each or 30K79 20 each When installed in areas where low ambient temperatures exist locate unit so winter prevailing winds do not blow directly onto outdoor unit Locate unit away from over...

Page 8: ...irst then B C and finally D When reinstalling panels reverse that order starting with panel D C B and finally A REMOVAL REPEAT STEPS 1 2 AND 3 TO REMOVE PANELS B C AND FINALLY D STEP 1 STARTING WITH P...

Page 9: ...as listed in table 2 and total length of installation Number of elbows vertical rise or drop in the piping USING EXISTING LINE SET Things to consider Liquid line that meter the refrigerant such as RF...

Page 10: ...METERS INTERVALS THEN STRAP THE LIQUID LINE TO THE VAPOR LINE FLOOR JOIST OR ROOF RAFTER REFRIGERANT LINE SET INSTALLING HORIZONTAL RUNS NOTE Similar installation practices should be used if line set...

Page 11: ...rform operations only in well ventilated areas Wear gloves and protective goggles or face shield to protect against burns Wash hands with soap and water after handling brazing alloys and flux IMPORTAN...

Page 12: ...lated nitrogen at 1 to 2 psig through the low side refrigeration gauge set into the liquid line service port valve and out of the suction vapor line service port valve CUT AND DEBUR CAP AND CORE REMOV...

Page 13: ...saturated cloths underneath the valve body to protect the base paint 4 FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set into the valve stem port connection on...

Page 14: ...from the liquid line orifice housing Take care not to twist or damage distributor tubes during this process G Remove and discard check expansion valve and the two Teflon rings H Use a field provided...

Page 15: ...distributor assembly B Install one of the provided Teflon rings around the stubbed end of the expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with ref...

Page 16: ...aks Use the following procedure to test for leaks 1 With both manifold valves closed connect the cylinder of HFC 410A refrigerant to the center port of the manifold gauge set Open the valve on the HFC...

Page 17: ...e dry nitrogen from the line set and indoor unit E Reconnect the manifold gauge to the vacuum pump turn the pump on and continue to evacuate the line set and indoor unit until the absolute pressure do...

Page 18: ...power 24VAC 40 VA minimum Refer to the unit nameplate for minimum circuit ampacity and maximum fuse or circuit breaker HACR per NEC Install power wiring and properly sized disconnect switch NOTE Units...

Page 19: ...lled low and high voltage circuits NOTE Do not bundle any excess 24VAC control wires inside control panel TYPICAL CONTROL WIRING R C W1 Y1 O G R C W1 W2 W3 G REVERSING VALVE Thermostat Indoor Unit R C...

Page 20: ...Page 20 506727 01 Figure 15 Typical Unit Wiring Diagram Downloaded from ManualsNet com search engine...

Page 21: ...SWITCH S4 LIQUID LINE LOW PRESSURE SWITCH S87 SUCTION LINE REVERSING VALVE L1 DEFROST THERMOSTAT S6 CRANKCASE THERMOSTAT S40 042 048 AND 060 UNITS ONLY Figure 16 Typical Unit Factory Wiring Downloaded...

Page 22: ...REVERSING VALVE L1 DEFROST THERMOSTAT S6 THERMAL SWITCH S173 CRANKCASE HEATER HR1 060 ONLY GROUND WIRE GREEN CRANKCASE THERMOSTAT S40 042 048 AND 060 UNITS ONLY Figure 17 Typical Unit Factory Wiring C...

Page 23: ...for Outdoor Units Delivered Void of Charge The following procedures are only required if it has been determine that the new outdoor unit is void of charge Skip to the next section if refrigerant charg...

Page 24: ...DIAMETER OUNCES PER 5 FEET GRAMS PER 1 5 METERS ADJUST FROM 15 FEET 4 6 METERS LINE SET 3 8 9 5 MM 3 OUNCE PER 5 85 GRAMS PER 1 5 M If line length is greater than 15 feet 4 6 meters add this amount I...

Page 25: ...2 Set the thermostat for either cooling or heating demand Turn on power to the indoor unit and close the outdoor unit disconnect switch to start the unit 3 Allow unit to run for five minutes to allow...

Page 26: ...is between 70 to 80 F 21 27 C This temperature range is what the target subcooling values are base upon in table 3 If indoor return air temperature is not within reference range set thermostat to cool...

Page 27: ...CX34 38A B 8 16 1 2 CH33 60D 7 6 0 11 CBX40UHV 024 11 22 1 6 CX34 44 48B C 8 19 1 6 CR33 50 60C 7 6 0 12 CH33 25B 11 13 0 15 042 CBX26UH 042 11 7 1 1 CR33 60D 7 6 0 12 CH33 36B 11 13 0 15 CBX27UH 042...

Page 28: ...299 309 316 245 265 285 307 330 354 381 409 438 469 505 13HPX 060 275 287 293 326 339 259 272 294 315 343 366 388 416 443 474 494 Temperature of the air entering the outside coil Table 5 HFC 410A Tem...

Page 29: ...o 70 F 21 C Crankcase Heater HR1 and Thermostat Switch S40 60 model only All models sizes are equipped with a belly band type crankcase heater HR1 prevents liquid from accumulating in the compressor T...

Page 30: ...at service light during periods of inefficient operation Defrost Control Diagnostic LEDs The defrost board uses two LEDs for diagnostics The LEDs flash a specific sequence according to the condition T...

Page 31: ...ed for your system call your Lennox dealer for assistance 3 Reusable Filter Many indoor units are equipped with reusable foam filters Clean foam filters with a mild soap and water solution rinse thoro...

Page 32: ...ce Book Start Up and Performance Checklist Job Name Job no Date Job Location City State Installer City State Unit Model No Serial No Service Technician Nameplate Voltage Rated Load Ampacity Compressor...

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