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Lennox T?CLASS TPA S4, Information Manual, Page: 8 / 18

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Lennox T?CLASS TPA S4 Information Manual Download Page 8

Page 8

Revised 05−2009

TPA*S4

II − REFRIGERANT SYSTEM 

FIGURE 10

TPA*S4 COOLING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)

OUTDOOR

COIL

DEFROST THERMOSTAT

EXPANSION/CHECK

VALVE

BI−FLOW

FILTER / DRIER

TO

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

DISTRIBUTOR

INDOOR

COIL

TO

HFC−410A

DRUM

FIGURE 11

TPA*S4 HEATING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)

OUTDOOR

COIL

DEFROST THERMOSTAT

EXPANSION/CHECK

VALVE

BI−FLOW

FILTER / DRIER

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

DISTRIBUTOR

INDOOR

COIL

TO

HFC−410A

DRUM

Summary of Contents for T?CLASS TPA S4

Page 1: ...allation adjustment alteration service or maintenance can cause personal injury loss of life or damage to property Installation and service must be performed by a licensed professional installer or eq...

Page 2: ...tdoor Fan Diameter in No of Blades 18 4 22 4 22 4 22 4 Motor hp 208 230V 1 5 460V 1 6 1 3 1 3 1 4 Cfm 2450 3890 3890 3830 Rpm 1100 1080 1085 830 Watts 190 400 375 330 Shipping Data lbs 1 package 180 2...

Page 3: ...harge sufficient for 15 ft length of refrigerant lines 2 HACR type circuit breaker or fuse 3 Refer to National or Canadian Electrical Code manual to determine wire fuse and disconnect size requirement...

Page 4: ...box See figure 3 24V THERMOSTAT TERMINAL STRIP FIGURE 3 W1 C L R O Y1 1 Compressor Contactor K1 The compressor is energized by a contactor located in the control box See figure 2 Three pole contactor...

Page 5: ...utes have passed If the jumper is not removed until after the additional 5 second period has elapsed the defrost will terminate and the test option will not function again until the jumper is removed...

Page 6: ...ESSURE DISCHARGE PRESSURE The counterclockwise orbiting scroll draws gas into the outer crescent shaped gas pocket created by the two scrolls figure 8 1 The centrifugal action of the orbiting scroll s...

Page 7: ...OTOR SHAFT D Reversing Valve L1 and Solenoid A refrigerant reversing valve with electro mechanical solenoid is used to reverse refrigerant flow during unit operation The reversing valve requires no ma...

Page 8: ...EXPANSION CHECK VALVE INDOOR UNIT OUTDOOR UNIT LIQUID LINE SERVICE PORT GAUGE MANIFOLD DISTRIBUTOR INDOOR COIL TO HFC 410A DRUM FIGURE 11 TPA S4 HEATING CYCLE SHOWING MANIFOLD GAUGE CONNECTIONS OUTDOO...

Page 9: ...n adjustable wrench 2 Using service wrench and hex head extension 5 16 for vapor line and 3 16 for liquid line back the stem out counterclockwise until the valve stem just touches the retaining ring 3...

Page 10: ...es and within the system Regulator setting must not exceed 150 psig 1034 kpa Failure to use a regulator can cause equipment failure resulting in injury or death C Evacuating the System 1 Attach gauge...

Page 11: ...ough the outdoor coil to achieve pressures in the 200 250 psig 1379 1724 kPa range These higher pressures are necessary for checking the charge Block equal sections of air intake panels and move obstr...

Page 12: ...290 74 307 73 300 73 309 62 20 7 283 58 298 61 286 60 300 56 1 These are most popular match up pressures Indoor match up indoor air quality and indoor load cause pressures to vary 2 Temperature of th...

Page 13: ...23 23 22 22 22 20 19 18 17 16 15 78 23 23 23 22 22 21 21 20 19 18 17 16 15 14 76 22 22 22 21 21 20 19 19 18 17 16 15 14 13 74 21 21 21 20 19 19 18 17 16 16 15 14 13 12 72 20 20 19 18 17 17 16 15 15 1...

Page 14: ...per 1 5m NOTE If line length is greater than 15 ft 4 6 m add this amount If line length is less than 15 ft 4 6 m subtract this amount Subcooling Charging Method Requirements these items are required f...

Page 15: ...temperature record in the LIQ space 7 Read the liquid line pressure then find its corresponding temperature in the temperature pressure table 13 and record it in the SAT space 8 Subtract LIQ temp fro...

Page 16: ...32 100 8 67 190 9 102 326 4 4 43 1 33 102 9 68 194 1 103 331 2 45 6 34 105 69 197 3 104 335 7 0 48 2 35 107 1 70 200 6 105 340 5 1 49 5 36 109 2 71 203 9 106 345 3 2 50 9 37 111 4 72 207 2 107 350 1 3...

Page 17: ...rgizing the reversing valve L1 See steps 1 2 and 3 End of FIRST STAGE HEAT See steps 4 5 and 6 DEFROST MODE During heating operation when outdoor coil temperature drops below 35 F 2 C or 42 F 5 5 C de...

Page 18: ...valve L1 See steps 1 2 and 3 End of FIRST STAGE HEAT See steps 4 5 and 6 DEFROST MODE During heating operation when outdoor coil temperature drops below 35 F 2 C or 42 F 5 5 C defrost switch thermost...

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