Lennox SPBH4 Series Unit Information Download Page 17

Page: 17 / 31

Page 17

FIGURE 18

SPB*H4 COOLING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)

OUTDOOR

COIL

EXPANSION/CHECK

VALVE

BI−FLOW

FILTER / DRIER

HFC−410A

DRUM

LOW

PRESSURE

HIGH

PRESSURE

COMPRESSOR

REVERSING VALVE

VAPOR

LINE

VALVE

MUFFLER

NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW

SERVICE

PORT

SUCTION

EXPANSION/CHECK

VALVE

INDOOR UNIT

OUTDOOR UNIT

LIQUID LINE

SERVICE

PORT

GAUGE MANIFOLD

INTERNAL

COMPRESSOR

LIMIT

DISTRIBUTOR

INDOOR

COIL

COIL SENSOR

FIGURE 19

SPB*H4 HEATING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)

OUTDOOR

COIL

EXPANSION/CHECK

VALVE

BI−FLOW

FILTER / DRIER

HFC−410A

DRUM

LOW

PRESSURE

HIGH

PRESSURE

COMPRESSOR

REVERSING VALVE

VAPOR

LINE

VALVE

MUFFLER

NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW

SERVICE

PORT

SUCTION

EXPANSION/CHECK

VALVE

INDOOR UNIT

OUTDOOR UNIT

LIQUID LINE

SERVICE

PORT

GAUGE MANIFOLD

INTERNAL

COMPRESSOR

LIMIT

DISTRIBUTOR

INDOOR

COIL

COIL SENSOR

A − Plumbing

Field refrigerant piping consists of liquid and vapor lines
from the outdoor unit (sweat connections). Use Lennox
L15 (sweat) series line sets as shown in table 1.

Summary of Contents for SPBH4 Series

Page 1: ...ng excessive force or rapid motion can result in personal injury Be aware of and use caution when working near these areas during installation or while servicing this equipment Information contained i...

Page 2: ...meter in 5 16 5 16 5 16 No of rows 2 2 2 Fins per inch 22 22 22 Outdoor Fan Diameter in 22 22 26 No of blades 4 4 3 Motor hp 1 6 1 4 1 3 Cfm 3150 3980 4380 Rpm 844 836 850 Watts 215 305 280 Shipping D...

Page 3: ...meter in 5 16 5 16 5 16 No of rows 2 2 2 Fins per inch 22 22 22 Outdoor Fan Diameter in 22 22 26 No of blades 4 4 3 Motor hp 1 6 1 4 1 3 Cfm 3150 3980 4380 Rpm 844 836 850 Watts 215 305 280 Shipping D...

Page 4: ...ed equipment is re moved from original installation site Warranty will not cover damage or defect resulting from Flood wind lightning or installation and operation in a corrosive atmosphere chlorine f...

Page 5: ...s clear the slots see figure 1 De tail B 3 Move panel down until lip of upper tab clears the top slot in corner post see figure 1 Detail A Position and Install Panel Position the panel almost parallel...

Page 6: ...Unit may have multiple power supplies 2 Dual Capacitor C12 The compressor and fan in SPB H4 series units use perma nent split capacitor motors The capacitor is located inside the unit control box see...

Page 7: ...ill enter a lockout condition The 5 strike pressure switch lockout condition can be reset by cycling OFF the 24 volt power to the control board or by shorting the TEST pins between 1 and 2 seconds All...

Page 8: ...ge line tempera ture shown in figure 7 exceeds a temperature of 300 F 148 C during compressor operation the board will de en ergize the compressor contactor output and the defrost output if active The...

Page 9: ...he actual difference between the clear coil and frosted coil temperatures exceeds the maxi mum difference allowed by the control a defrost cycle will be initiated IMPORTANT The demand defrost control...

Page 10: ...e Demand Defrost Control Y1 Active Place a jumper on TEST pins for longer than one second but less than two seconds Clears any short cycle lockout and five strike fault lockout function if applicable...

Page 11: ...refrigerant charge in system 3 Improper metering device installed or incorrect operation of metering device 4 Incorrect or improper sensor location or connection to sys tem 1 Remove any blockages or r...

Page 12: ...he liquid is worked toward the center of the scroll and is discharged Due to its efficiency the scroll compressor is capable of drawing a much deeper vacuum than reciprocating com pressors Deep vacuum...

Page 13: ...ing mecha nism to open two by pass ports in the first compression pocket of the scrolls in the compressor The internal sole noid is activated by a 24 volt direct current solenoid coil The coil power r...

Page 14: ...TE Block outdoor coil to maintain a minimum of 375 psig during testing 7 Record all of the readings for the Y1 demand on table 3 8 Close switch to energize Y2 demand 9 Allow pressures and temperatures...

Page 15: ...Confirm internal unloader solenoid has prop er resistance 1 Shut all power off to unit main and low voltage 2 Unplug the molded plug from the compressor solenoid 2 pin fusite 3 Using a volt meter set...

Page 16: ...d when the pressure drop across the filter drier is greater than 4 psig To safeguard against moisture entering the system follow the steps in section IV sub section B Evacuating the System when replac...

Page 17: ...OR COIL COIL SENSOR FIGURE 19 SPB H4 HEATING CYCLE SHOWING MANIFOLD GAUGE CONNECTIONS OUTDOOR COIL EXPANSION CHECK VALVE BI FLOW FILTER DRIER TO HFC 410A DRUM LOW PRESSURE HIGH PRESSURE COMPRESSOR REV...

Page 18: ...p with an adjustable wrench 2 Use a service wrench with a hex head extension to back the stem out counterclockwise as far as it will go NOTE Use a 3 16 hex head extension for 3 8 line sizes or a 5 16...

Page 19: ...410A into the line set and indoor unit Weigh in a trace amount of HFC 410A A trace amount is a maxi mum of 2 ounces 57 g or 3 pounds 31 kPa pressure Close the valve on the R 410A cylinder and the valv...

Page 20: ...pump and disconnect the manifold gauge center port hose from vacuum pump Attach the manifold center port hose to a nitrogen cylin der with pressure regulator set to 150 psig 1034 kPa and purge the hos...

Page 21: ...ose in table 2 If subcooling value is greater than shown recover some refrigerant if less add some refrigerant TABLE 2 SPB036H4 Subcooling Values for Charging Second Stage High Capacity SSB H4S41Y thr...

Page 22: ...309 75 334 72 323 70 40 4 4 322 92 354 89 318 69 50 10 336 113 381 108 329 82 1 These are most popular match up pressures Indoor match up indoor air quality and indoor load cause pressures to vary 2...

Page 23: ...airflow as illustrated in figure 23 to be sure the indoor airflow is as required Make any air flow adjustments before continuing with the following procedure 2 Measure outdoor ambient temperature dete...

Page 24: ...17 7 0 0 CBX32MV 068 16 10 0 3 CH33 60D 2F 18 4 0 2 CH33 62D 2F 15 10 0 4 CR33 60 40 4 0 2 CX34 60D 6F 18 4 0 2 CX34 62D 6F 16 8 0 2 Table 8 SSB060H4S44Y INDOOR HEAT MATCHUP PUMP Target Subcooling Hea...

Page 25: ...036 230 22 7 0 9 CBX27UH 042 230 24 11 3 0 CBX32M 036 22 7 0 9 CBX32MV 036 22 7 0 9 CBX32MV 048 24 11 3 0 CBX40UHV 030 22 7 0 9 CBX40UHV 036 22 7 0 9 CBX40UHV 042 24 11 3 0 CBX40UHV 048 24 11 3 0 CH33...

Page 26: ...469 5 37 111 4 68 194 1 99 312 7 130 475 6 38 113 6 69 197 3 100 317 2 131 481 6 39 115 8 70 200 6 101 321 8 132 487 8 40 118 0 71 203 9 102 326 4 133 494 0 41 120 3 72 207 2 103 331 0 134 500 2 42 1...

Page 27: ...ils for evidence of oil leaks B Indoor Coil 1 Clean coil if necessary 2 Check connecting lines and coils for evidence of oil leaks 3 Check the condensate line and clean it if necessary C Indoor Unit 1...

Page 28: ...Page 28 VIII WIRING DIAGRAM AND SEQUENCE OF OPERATION...

Page 29: ...Page 29 Figure 26 Unit Wiring Diagram 036 and 048 Sizes SPB H4S45Y...

Page 30: ...Page 30 Figure 27 Unit Wiring Diagram 060 Size Only SPB H4S45Y...

Page 31: ...he defrost board sends 24 volts through Y2 OUT to the L34 compressor solenoid plug The 2 wire com pressor solenoid plug converts the 24volt AC outputs to a 24volt DC signal input to the L34 internal h...

Search results

Summary of Contents for SPBH4 Series

Reviews:

Related manuals for SPBH4 Series

Brands by name

Popular brands

Lennox SPBH4 Series, Unit Information

Search results

Summary of Contents for SPBH4 Series

Reviews:

Related manuals for SPBH4 Series

Brands by name

Popular brands