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22 

 18-AC51D1-10E-EN

Indoor Wet Bulb Temp (F)

Outdoor 

Dry 

Bulb 

Temp.

(F) 

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

55

7

9

10

11

12

14

15

17

18

20

21

23

24

26

27

29

30

60

5

7

8

9

10

12

13

15

16

18

19

21

22

24

25

27

28

30

31

65

4

6

8

10

11

13

14

16

17

18

19

21

22

24

25

27

28

27

31

70

5

7

8

10

11

13

14

16

17

18

19

21

22

24

25

27

28

30

31

75

5

6

7

9

10

12

14

16

18

19

21

22

24

26

28

29

31

32

80

4

6

7

9

10

11

12

14

16

18

19

21

23

25

26

28

29

31

33

85

4

6

7

9

10

13

14

16

18

20

21

23

24

26

28

29

30

31

32

90

4

6

8

10

11

13

14

16

18

20

22

24

25

27

28

30

31

95

4

6

8

10

13

14

16

18

20

22

23

25

26

28

29

100

6

8

10

12

13

16

18

20

21

23

25

27

29

105

4

6

7

9

11

13

15

18

20

22

24

26

28

110

 

4

7

9

11

13

16

18

21

23

26

28

115

6

9

12

14

16

19

21

24

26

Using a digital psychrometer, measure the return air wet-bulb temperature at the unit just before the coil. Also measure the outdoor dry-bulb tem-
perature. Use these temperatures to locate the target superheat on the charging table. Do not attempt to charge the system if these conditions fall 
outside of this charging table.
ADD refrigerant to DECREASE total superheat. REMOVE refrigerant to INCREASE total superheat. Always allow 10 to 15 minutes of operature 
after any refrigerant or air flow change prior to determining the final superheat.

Fixed Orifice Superheat Charging Table 

STEP 9 

- Record System Information for refer-

ence. 

Record system pressures and temperatures 
after charging is complete.

Outdoor model number = _________________

Measured Outdoor Ambient = __________  º F

Measured Indoor Ambient = __________  º F

Measured Liquid Line Temp = __________  º F

Measured Suction Line Temp = __________  º F

Liquid Gage Pressure = __________ PSI

Suction Gage Pressure = __________ PSI

Summary of Contents for 4TTR4018-060

Page 1: ...proved matched indoor and outdoor systems Some of the benefits of installing approved matched indoor and outdoor split systems are maximum efficiency optimum performance and the best overall system re...

Page 2: ...EN and APP APG011 EN or APP APG012 EN Extreme caution should be exercised when opening the Liquid Line Service Valve Turn counterclockwise until the valve stem just touches the rolled edge No torque...

Page 3: ...x W in Weight lb 4TTR4018N 29 x 26 x 29 133 4TTR4019N 29 x 30 x 33 161 4TTR4024N 29 x 26 x 29 133 4TTR4025N 29 x 30 x 33 162 4TTR4030N 33 x 30 x 33 156 4TTR4036N 33 x 30 x 33 156 4TTR4042N 37 x 34 x...

Page 4: ...ear Bedrooms Min 5 Unrestricted Access Panel Min 3 Unrestricted 2 2 Refrigerant Piping Limits 1 The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty 60 feet 2 Th...

Page 5: ...ound to the unit 2 4 Coastal Considerations If installed within one mile of salt water including seacoasts and inland waterways models without factory sup plied Seacoast Salt Shields require the addit...

Page 6: ...ne length adders Line Length TUBING INFORMATION LINE TYPE REFRIGERANT TO ADD AT SPECIFIED ADDITIONAL LENGTH Suction Line Liquid Line 20 ft 30 ft 40 ft 50 ft 60 ft 3 4 3 8 3 oz 9 oz 15 oz 21 oz 27 oz 7...

Page 7: ...ply with National State and Local Codes when isolating line sets from joists rafters walls or other structural elements Isolation From Joist Rafter Side View 8 Feet Maximum Secure Vapor line from jois...

Page 8: ...e or other appropriate method every 8 ft 8 Feet Maximum Isolation Through Wall DO NOT hang line sets from ductwork Sealant Insulation Vapor Line Wall Ductwork Isolator Line Set Section 7 Refrigerant L...

Page 9: ...orrect direction of refrigeration flow away from outdoor unit and toward evapo rator coil as illustrated Braze the filter drier to the Liquid Line Continue the dry nitrogen purge Do not remove the wet...

Page 10: ...P 2 Check for leaks by using a soapy solu tion or bubbles at each brazed location Remove nitrogren pressure and repair any leaks before continuing Section 8 Refrigerant Line Leak Check 8 1 Check For L...

Page 11: ...ete blank off the vacuum pump and micron gauge and close the valves on the manifold gauge set 1 MIN Section 10 Service Valves 10 1 Open the Gas Service Valve 0350 Microns ON OFF CAP 1 4 TURN ONLY COUN...

Page 12: ...lve System Service Port 3 16 Hex Wrench Unit Side of Service Valve Extreme caution should be exercised when opening the Liquid Line Service Valve Turn counterclockwise until the valve stem just touche...

Page 13: ...e 24 VAC HOT FAN 24 VAC Common SOV COOL HEAT 1st STAGE HEATING 2nd STAGE EMERGENCY HEAT Pink White O Y1 Y2 BK WH BLK BK WH BLK Thermostat Air Handler Outdoor Unit R G B W1 W2 B R G B C Yl W1 W2 Blue 2...

Page 14: ...l to BK of the air handler TAM4 only Wire as shown no BK is available TAM7 only When using a BK enabled comfort control cut BK jumper on the AFC and connect BK from comfort control to BK of the air ha...

Page 15: ...gh Voltage Ground Ground the outdoor unit per national state and local code requirements LIVE ELECTRICAL COMPONENTS During installation testing servicing and troubleshooting of this product it may be...

Page 16: ...s to apply power to the indoor and outdoor units STEP 5 Set system thermostat to ON OFF DONE CANCEL ON OFF STEP 4 Wait one 1 hour before starting the unit if compressor crankcase heater acces sory is...

Page 17: ...er to accurately charge the system in the cooling mode when outdoor ambient tempera ture is above 55 F STEP 1 Use the refrigerant line total length and lift measurements from Section 5 and use line le...

Page 18: ...ooling 15 10 0 1 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Add 4 Add 2 Add 1 Add 1 REFRIGERANT LINE LIFT FT SUBCOOL CHARGING CHART CORRECTIONS TABLE FOR LINE LENGTH AND RISE TOTAL REFRIGERANT LI...

Page 19: ...bcooling Add 2 of Subcooling Add 1 of Subcooling Use Design Subcool Value 60 50 40 30 25 20 15 10 0 SUBCOOL CHARGING CHART CORRECTIONS TABLE FOR LINE LENGTH AND RISE Add 6 TOTAL REFRIGERANT LINE LENGT...

Page 20: ...essure should be ap proximately 327 PSI This is the shown as the intersection of the Final Subcooling column and the Liquid Temperature row Table 14 2 8 9 10 11 12 13 14 179 182 185 188 191 195 198 19...

Page 21: ...arged 2 Remove gages 3 Replace service port caps to prevent leaks Tighten finger tight plus an additional 1 6 turn STEP 8 Verify typical performance Refer to System Pressure Curves at the end of the d...

Page 22: ...9 21 24 26 Using a digital psychrometer measure the return air wet bulb temperature at the unit just before the coil Also measure the outdoor dry bulb tem perature Use these temperatures to locate the...

Page 23: ...erational and Checkout Procedures To obtain proper performance all units must be operated and charge adjustments made Important Perform a final unit inspection to be sure that factory tubing has not s...

Page 24: ...24 18 AC51D1 10E EN 042N 048N Models 042 43L 048L Models PRINTED FROM D158514P01 049N 060N Models PRINTED FROM D159175...

Page 25: ...18 AC51D1 10E EN 25 PRINTED FROM D158513P01 018L Models PRINTED FROM D158515P01 060L Models...

Page 26: ...26 18 AC51D1 10E EN Section 17 Wiring Diagrams 018N 019N 024N 025N 042N 049N Models...

Page 27: ...18 AC51D1 10E EN 27 018N 019N 024N 025N 042N 049N Models...

Page 28: ...28 18 AC51D1 10E EN PRINTED FROM D157362P05 REVB 030N 036N 048N Models...

Page 29: ...18 AC51D1 10E EN 29 PRINTED FROM D157362P05 REVB 030N 036N 048N Models...

Page 30: ...30 18 AC51D1 10E EN 060N Models...

Page 31: ...18 AC51D1 10E EN 31 060N Models...

Page 32: ...32 18 AC51D1 10E EN 018L 024 25L 030 31L 036 37L 036 37M 042 43L 048L Models PRINTED FROM D157362P05 REVB...

Page 33: ...18 AC51D1 10E EN 33 018L 024 25L 030 31L 036 37L 036 37M 042 43L 048L Models PRINTED FROM D157362P05 REVB...

Page 34: ...34 18 AC51D1 10E EN 060L Models...

Page 35: ...18 AC51D1 10E EN 35 060L Models...

Page 36: ...OF OD TEMP ID W B 3 READ LIQUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 305 PSIG LIQUID PRESSURE...

Page 37: ...D W B 3 READ LIQUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 286 PSIG LIQUID PRESSURE SHOULD BE 1...

Page 38: ...5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 297 PSIG LIQUID PRESSURE SHOULD BE 10 PSI OF CHART 5 SUCTION PRESSURE...

Page 39: ...UID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 309 PSIG LIQUID PRESSURE SHOULD BE 10 PSI OF CHART 5...

Page 40: ...3 READ LIQUID 4 OR SUCTION 5 PRESSURE IN LEFT COLUMN EXAMPLE 1 OUTDOOR TEMP 82 F 2 INDOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 313 PSIG LIQUID PRESSURE SHOULD BE 10 PSI...

Page 41: ...82 F 2 IN DOOR WET BULB 67 F 3 AT INTERSECTION ACTUAL 4 LIQUID PRESSURE 600 CFM IS 306 PSIG LIQUID PRESSURE SHOULD BE 10 PSI OF CHART 5 SUCTION PRESSURE 600 CFM IS 142 PSIG SUCTION PRESSURE SHOULD BE...

Page 42: ...CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F TO CHECK COOLING PERFORMANCE SELECT THE PROPER INDOOR CFM ALLOW PRESSURES TO STABILIZE MEASURE INDOOR WET BULB TEMPERATURE OUTDOOR TEMPERATURE L...

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