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Tubing

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

125 [45.72]

150 [45.72]

175 [53.34]

200 [60.96]

225 [68.58]

250 [76.20]

275 [83.82]

300 [91.44]

1/4 [6.35]

25 [7.62]

50 [15.24]

60 [18.29]

50 [15.24]

35 [10.67]

20 [6.1]

N/R

5/16 [7.94]

25 [7.62]

50 [15.24]

75 [22.86]

90 [27.43]

85 [25.91]

80 [24.38]

75 [22.86]

70 [21.34]

65 [19.81]

60 [18.29]

3/8 [9.53]

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

95 [28.96]

90 [27.43]

7/16 [1

1.12]

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

105 [32]

100 [30.48]

1/2 [12.71]

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

105 [32]

100 [30.48]

1/4 [6.35]

25 [7.62]

50 [15.24]

30 [9.14]

10 [3.05]

N/R

5/16 [7.94]

25 [7.62]

50 [15.24]

75 [22.86]

80 [24.38]

75 [22.86]

70 [21.34]

60 [18.29]

55 [16.76]

50 [15.24]

45 [13.72]

35 [10.67]

30 [9.14]

3/8 [9.53]

25 [7.62]

50 [15.24]

75 [22.86]

95 [28.96]

90 [27.43]

85 [25.91]

80 [24.38]

7/16 [1

1.12]

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

95 [28.96]

1/2 [12.71]

25 [7.62]

50 [15.24]

75 [22.86]

100 [30.48]

1/4 [6.35]

25 [7.62]

30 [9.14]

N/R

5/16 [7.94]

25 [7.62]

50 [15.24]

75 [22.86]

65 [19.81]

55 [16.76]

50 [15.24]

40 [12.19]

30 [9.14]

25 [7.62]

15 [4.57]

5 [1.52]

N/R

3/8 [9.53]

25 [7.62]

50 [15.24]

75 [22.86]

90 [27.43]

85 [25.91]

80 [24.38]

75 [22.86]

70 [21.34]

65 [19.81]

7/16 [1

1.12]

25 [7.62]

50 [15.24]

75 [22.86]

95 [28.96]

90 [27.43]

85 [25.91]

1/2 [12.71]

25 [7.62]

50 [15.24]

75 [22.86]

95 [28.96]

90 [27.43]

1/4 [6.35]

25 [7.62]

N/R

5/16 [7.94]

25 [7.62]

50 [15.24]

55 [16.76]

45 [13.72]

30 [9.14]

20 [6.1]

N/R

3/8 [9.53]

25 [7.62]

50 [15.24]

75 [22.86]

70 [21.34]

65 [19.81]

60 [18.29]

55 [16.76]

50 [15.24]

45 [13.72]

40 [12.19]

7/16 [1

1.12]

25 [7.62]

50 [15.24]

75 [22.86]

85 [25.91]

80 [24.38]

75 [22.86]

70 [21.34]

1/2 [12.71]

25 [7.62]

50 [15.24]

75 [22.86]

90 [27.43]

85 [25.91]

1/4 [6.35]

5 [1.52]

N/R

5/16 [7.94]

25 [7.62]

40 [12.19]

25 [7.62]

5 [1.52]

N/R

3/8 [9.53]

25 [7.62]

50 [15.24]

60 [18.29]

50 [15.24]

45 [13.72]

40 [12.19]

35 [10.67]

30 [9.14]

20 [6.1]

15 [4.57]

10 [3.05]

N/R

7/16 [1

1.12]

25 [7.62]

50 [15.24]

70 [21.34]

65 [19.81]

60 [18.29]

55 [16.76]

50 [15.24]

45 [13.72]

1/2 [12.71]

25 [7.62]

50 [15.24]

70 [21.34]

65 [19.81]

60 [18.29]

1/4 [6.35]

N/R

5/16 [7.94]

25 [7.62]

35 [10.67]

10 [3.05]

N/R

3/8 [9.53]

25 [7.62]

50 [15.24]

55 [16.76]

45 [13.72]

40 [12.19]

30 [9.14]

25 [7.62]

15 [4.57]

10 [3.05]

N/R

7/16 [1

1.12]

25 [7.62]

50 [15.24]

70 [21.34]

65 [19.81]

60 [18.29]

55 [16.76]

50 [15.24]

45 [13.72]

40 [12.19]

1/2 [12.71]

25 [7.62]

50 [15.24]

75 [22.86]

70 [21.34]

65 [19.81]

60 [18.29]

1/4 [6.35]

N/R

5/16 [7.94]

25 [7.62]

10 [3.05]

N/R

3/8 [9.53]

25 [7.62]

50 [15.24]

40 [12.19]

30 [9.14]

20 [6.1]

10 [3.05]

N/R

7/16 [1

1.12]

25 [7.62]

50 [15.24]

60 [18.29]

55 [16.76]

50 [15.24]

45 [13.72]

40 [12.19]

35 [10.67]

30 [9.14]

25 [7.62]

20 [6.1]

1/2 [12.71]

25 [7.62]

50 [15.24]

65 [19.81]

60 [18.29]

55 [16.76]

50 [15.24]

NOTES:

N/R =

Application not recommended.

Grey =This application is acceptable,

but the long line guidelines must be followed. Reference Long

Line S

et section in the I&O

R-410A

System

Capacity Model

Liquid Line Size

Connection

Size (Inch I.D.)

[mm]

Liquid Line Size

(Inch O.D.)

[mm]

Maximum

ertical Separation - Feet [m]

Liquid Line Selection Chart

Elevation (Above or Below) Indoor Coil

otal

Equivalent

Length - Feet [m]

INSTALLATION

Interconnecting

ubing

3/8" [9.53]

1418

RP1424

RP1430

RP1436

RP1442

RP1448

RP1460

Содержание RP1336AC1NA

Страница 1: ...L FOR PROPER INSTALLATION ADJUSTMENT AND OPERATION OF THIS UNIT READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION ADJUSTMENT SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE ELECTRICAL SHOCK PROPERTY DAMAGE PERSONAL INJURY OR DEATH INSTALLATION INSTRUCTIONS RP13 13 SEER RP14 14 SEER AND RP15 15 S...

Страница 2: ...k Testing 26 Wiring 27 28 Control Wiring 27 Conventional 24 VAC Thermostat Control Wiring 27 Typical Thermostat Wiring Diagrams 27 Power Wiring 28 Grounding 28 Start Up 29 33 Start Up 29 Checking Airflow 29 Evacuation Procedure 30 Final Leak Testing 30 Checking Refrigerant Charge 31 33 Charging Units With R 410A Refrigerant 31 Confirm ID Airflow and Coils Are Clean 31 Measurement Device Setup 31 C...

Страница 3: ... pump and may also endanger life and property The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized components accessories or devices CAUTIONS R 410A systems operate at approximately 60 higher pressures 1 6 times than R 22 systems Do not use R 22 service equipment or components on R 410A equipment Use appropriate care when using this refr...

Страница 4: ...mpany Check model number electrical characteristics and accessories to determine if they are correct Check system components indoor coil outdoor unit air handler furnace etc to make sure they are properly matched Application Before specifying any heat pump equipment a survey of the structure and a heat loss and heat gain calculation must be made A heat loss calculation involves identifying all sur...

Страница 5: ... 7 152 5 1 00 31 31 50 50 40 40 24 23 2 25 1 4780 2255 232 6577 262 118 8 269 122 0 RP1436AC1NA 208 230 3 60 10 4 73 0 0 80 14 24 3 16 5 14 82 1 38 1 3333 1573 111 3146 171 77 6 178 80 7 RP1442AC1NA 208 230 3 60 13 5 88 0 1 00 18 31 4 21 3 14 82 1 38 1 2943 1389 155 4394 201 91 2 208 94 3 RP1448AC1NA 208 230 3 60 13 7 83 1 1 20 19 32 1 21 8 19 76 1 84 1 4055 1913 143 4054 227 103 0 234 106 1 RP146...

Страница 6: ... 610 mm OF CLEARANCE AIR INLET LOUVERS ALLOW 6 152 mm OF CLEARANCE ALL SIDES 12 305 mm RECOMMENDED R P 14 24 A J 1 N A MINOR SERIES Z TYPE 1 SINGLE STAGE P PISTON VOLTAGE J 1 PH 208 230 60 C 3 PH 208 230 60 D 3 PH 460 60 MAJOR SERIES CAPACITY 18 18000 BTU HR 5 28 kW 24 24000 BTU HR 7 03 kW 30 30000 BTU HR 8 79 kW 36 36000 BTU HR 10 55 kW 42 42000 BTU HR 12 31 kW 48 48000 BTU HR 14 07 kW 60 60000 B...

Страница 7: ... Failure to confirm proper charge and airflow may reduce energy efficiency and shorten equipment life MATCH ALL COMPONENTS OUTDOOR UNIT INDOOR COIL INDOOR AIR HANDLER FURNACE REFRIGERANT LINES INDOOR THERMOSTAT Specifications DIMENSIONAL DATA RP13 18 24 30 25 635 27 686 39 991 35 889 29 75 756 33 75 857 35 75 908 33 75 857 29 75 756 33 75 857 35 75 908 33 75 857 Height H inches mm Length L inches ...

Страница 8: ... operation Closely follow the clearance recommendations on page 8 24 61 0 cm to the service panel access 60 152 4 cm above heat pump fan discharge unit top to prevent recirculation 6 15 2 cm to heat pump coil grille air inlets with 12 30 5 cm minimum recommended Corrosive Environment The metal parts of this unit may be subject to rust or deterioration if exposed to a corrosive environment This oxi...

Страница 9: ...distribute unit weight evenly and prevent noise and vibration Where snowfall is anticipated raise the unit above the base pad to prevent ice buildup and coil damage Mount the unit high enough to be above the average accumulated area snowfall See Ground Snow Depth chart on page 9 for representative snow depths NOTICE Do not block drain openings on bottom of unit If unit must be elevated because of ...

Страница 10: ...geport 23 Lexington 12 Kalispell 53 Winston Salem 17 Bristol 8 WISCONSIN Hartford 29 Louisville 11 Missoula 23 NORTH DAKOTA Chattanooga 6 Green Bay 36 New Haven 15 MAINE NEBRASKA Bismarck 25 Knoxville 8 La Crosse 32 DELAWARE Caribou 100 Grand Island 30 Fargo 34 Memphis 5 Madison 32 Wilmington 13 Portland 62 Lincoln 20 Williston 25 Nashville 8 Milwaukee 32 GEORGIA MARYLAND Norfolk 29 OHIO TEXAS WYO...

Страница 11: ...stible R 410A and air should never be mixed in tanks or supply lines or be allowed to accumulate in storage tanks Leak checking should never be done with a mixture of R 410A and air Leak checking can be performed safely with nitrogen or a mixture of R 410A and nitrogen Quick Reference Guide For R 410A R 410A refrigerant operates at approximately 60 higher pressure 1 6 times than R 22 Ensure that s...

Страница 12: ...porator The existing evaporator must be replaced with the factory specified TXV evaporator specifically designed for R 410A Location Do not install the indoor coil in the return duct system of a gas or oil furnace Provide a service inlet to the coil for inspection and cleaning Keep the coil pitched toward the drain connection CAUTION When coil is installed over a finished ceiling and or living are...

Страница 13: ...flash any superheated vapor prior to the expansion device of the indoor coil The flashing of refrigerant can occur for the following reasons Low refrigerant charge Improperly selected liquid line size Absorption of heat prior to expansion device Excessive vertical rise between the condenser and evaporator Table 2 lists the equivalent length per 25 of liquid line at various diameters up to 300 The ...

Страница 14: ...set application Additional refrigerant charge Fitting losses and maximum equivalent length considerations Refrigerant migration during the off cycle Oil return to the compressor Capacity losses System oil level adjustment Table 2 is used to determine if the application is considered to have a long line set The region of the chart that is shaded grey is considered to be a long line set application ...

Страница 15: ...ng Off Cycle Long line set applications can require a consider able amount of additional refrigerant This addition al refrigerant needs to be managed throughout the entire ambient operating envelope that the system will go through during its life cycle Off Cycle mi gration is where excess refrigerant condenses and migrates to the lowest part of the system Exces sive build up of refrigerant at the ...

Страница 16: ...at are considered to have a long line set with the outdoor unit below the indoor unit the following is required TXV or EEV at the IDunit Crankcase heater Start components may be required depending upon quality of voltage Inverted vapor line trap Reference Figure 3 Insulated liquid and suction line Follow the proper line sizing equivalent length charging requirements and oil level adjustments spell...

Страница 17: ... considered to have a long line set with the outdoor unit above the indoor unit the following is required TXV at the indoor unit Crankcase heater Start components maybe required depending upon quality of voltage Insulated liquid and suction line Follow the proper line sizing equivalent length charging requirements and oil level adjustments spelled out in this document and the outdoor units I O Ver...

Страница 18: ... R N R N R N R N R N R N R N R N R 5 16 7 94 25 7 62 35 10 67 10 3 05 N R N R N R N R N R N R N R N R N R 3 8 9 53 25 7 62 50 15 24 55 16 76 45 13 72 40 12 19 30 9 14 25 7 62 15 4 57 10 3 05 N R N R N R 7 16 11 12 25 7 62 50 15 24 70 21 34 65 19 81 60 18 29 60 18 29 55 16 76 50 15 24 50 15 24 45 13 72 45 13 72 40 12 19 1 2 12 71 25 7 62 50 15 24 75 22 86 70 21 34 70 21 34 70 21 34 65 19 81 65 19 8...

Страница 19: ...0 15 24 45 13 72 40 12 19 7 16 11 12 25 7 62 50 15 24 75 22 86 85 25 91 85 25 91 85 25 91 80 24 38 80 24 38 80 24 38 75 22 86 75 22 86 70 21 34 1 2 12 71 25 7 62 50 15 24 75 22 86 90 27 43 90 27 43 90 27 43 90 27 43 85 25 91 85 25 91 85 25 91 85 25 91 85 25 91 1 4 6 35 5 1 52 N R N R N R N R N R N R N R N R N R N R N R 5 16 7 94 25 7 62 40 12 19 25 7 62 5 1 52 N R N R N R N R N R N R N R N R 3 8 9...

Страница 20: ...1 60 18 29 55 16 76 50 15 24 7 16 11 12 25 7 62 50 15 24 75 22 86 95 28 96 95 28 96 90 27 43 90 27 43 85 25 91 85 25 91 85 25 91 80 24 38 80 24 38 1 2 12 71 25 7 62 50 15 24 75 22 86 100 30 48 95 28 96 95 28 96 95 28 96 95 28 96 95 28 96 95 28 96 90 27 43 90 27 43 1 4 6 35 25 7 62 N R N R N R N R N R N R N R N R N R N R N R 5 16 7 94 25 7 62 50 15 24 45 13 72 30 9 14 10 3 05 N R N R N R N R N R N ...

Страница 21: ...R N R 5 8 15 88 0 97 0 95 0 94 0 92 0 89 0 88 0 86 0 86 0 84 N R N R N R 3 4 19 05 0 99 0 99 0 98 0 97 0 96 0 96 0 95 0 94 0 93 N R N R N R 7 8 22 23 1 00 0 99 0 99 0 99 0 98 0 98 0 98 0 97 0 97 N R N R N R 1 25 4 1 00 1 00 1 00 0 99 0 99 1 00 0 99 1 00 0 99 N R N R N R 1 1 8 28 58 N R N R N R N R N R N R N R N R N R N R N R N R 5 8 15 88 0 98 0 94 0 92 0 9 0 88 0 85 N R N R N R N R N R N R 3 4 19...

Страница 22: ...9 0 99 0 99 0 99 0 98 0 98 0 98 1 25 4 1 01 1 00 1 00 1 00 1 00 1 00 1 00 1 00 1 00 1 00 1 00 1 00 1 1 8 28 58 N R N R N R N R N R N R N R N R N R N R N R N R 5 8 15 88 0 98 0 97 0 95 0 94 0 92 0 91 0 89 0 88 0 87 0 86 0 85 N R 3 4 19 05 0 99 0 98 0 98 0 98 0 97 0 97 0 96 0 96 0 95 0 95 0 94 N R 7 8 22 23 1 00 1 00 1 00 0 99 1 00 0 99 0 99 0 99 0 98 0 98 0 98 N R 1 25 4 1 01 1 00 1 00 1 00 1 00 1 ...

Страница 23: ... 98 0 98 1 25 4 1 01 1 01 1 01 1 01 1 01 1 01 1 01 1 00 1 00 1 00 1 00 1 01 1 1 8 28 58 N R N R N R N R N R N R N R N R N R N R N R N R 5 8 15 88 1 00 0 98 0 96 0 95 0 94 0 92 0 91 0 89 0 88 0 87 0 86 0 85 3 4 19 05 1 01 1 01 1 00 0 99 0 99 0 98 0 97 0 97 0 96 0 95 0 95 0 94 7 8 22 23 1 00 1 01 1 01 1 01 1 01 1 01 1 01 1 00 0 99 1 00 1 00 0 99 1 25 4 1 03 1 02 1 02 1 02 1 02 1 01 1 01 1 01 1 01 1 ...

Страница 24: ...t pump units and must be installed in the liquid line upon unit installation When replacing an R 22 system with an R 410A system and the line set is not replaced use a flush kit available through aftermarket stores such as Prostock If tubing has been cut make sure ends are deburred while holding in a position to prevent chips from falling into tubing Burrs such as those caused by tubing cutters ca...

Страница 25: ...tions Indoor coils have only a holding charge of dry nitrogen Keep all tube ends sealed until connections are to be made Use type L copper refrigeration tubing Braze the connections with the following alloys copper to copper 5 silver minimum copper to steel or brass 15 silver minimum Be certain both refrigerant shutoff valves at the outdoor unit are closed Remove the caps and Schrader cores from t...

Страница 26: ... to purge lines or pressurize system for leak test Oxygen reacts violently with oil which can cause an explosion resulting in severe personal injury or death Pressurize line set and coil through service fittings with dry nitrogen to 150 PSIG maximum Close nitrogen tank valve let system sit for at least 15 minutes and check to see if the pressure has dropped If the pressure has dropped check for le...

Страница 27: ...ween thermostat and outdoor unit Typical Noncommunicating Thermostat Wiring Diagrams The following figures show the typical wiring diagrams for RH1T RHIV air handlers and 1 stage heat pump and dual fuel applications with a gas furnace and 1 stage heat pump Cooling and heat pump airflows may need to be adjusted for homeowner comfort once the system is operational Control Wiring WIRE COLOR CODE BK B...

Страница 28: ...d make sure all connections are tight DO NOT connect aluminum field wire to the Comfort Control2 terminals Grounding WARNING The unit must be permanently grounded Failure to do so can cause electrical shock resulting in severe personal injury or death A grounding lug is provided near the line voltage power entrance for a ground wire WIRING Control Wiring cont NOTES 1 FOR PROGRAMMING THERMOSTAT IN ...

Страница 29: ... This ensures a comfortable living space These simple mathematical formulas can be used to determine the CFM in a residential or light commercial system Electric resistance heaters can use CFM volts x amps x 3 413 SHC x temp rise Gas furnaces can use CFM Output Capacity in BTUH SHC x temp rise Refer to furnace data plate for furnace output capacity SHC Sensible Heat Constant see table below An air...

Страница 30: ...se readings because of pressure drop through the fittings After adequate evacuation open both service valves by removing both brass service valve caps with an adjustable wrench Insert a 3 16 5 mm or 5 16 8 mm hex wrench into the stem and turn counterclockwise until the wrench stops Gauges must be connected at this point to check and adjust charge Do not replace caps yet IMPORTANT Compressors espec...

Страница 31: ...eversing valve and compressor are to be used Confirm ID Airflow and Coils Are Clean Confirm adequate indoor supply airflow prior to starting the system See the Technical Specification Sheet for rated airflow for each ID OD unit match Air filter s and coils indoor and outdoor are to be clean and free of frost prior to starting the system Supply airflow must be between 320 and 450 cfm per rated cool...

Страница 32: ...onditions ONLY Cooling Mode ONLY 55 F 12 8 C outdoor dry bulb and above Heating Mode ONLY Between 40 F 4 4 C and 60 F 15 6 C outdoor dry bulb 3 Locate and note the design pressures The correct liquid and vapor pressures are found at the intersection of the installed system and the outdoor ambient temperature on the Charging Chart located inside the access panel cover Liquid Pressure ______psig Vap...

Страница 33: ...ure gauges from pressure ports then replace the pressure port caps and tighten adequately to seal caps Do not overtighten Replace the service valve caps finger tight and then tighten with an open end wrench adequately to seal caps Do not overtighten Replace control box cover and service panel and install screws to secure service panel Restore power to unit at disconnect if required Configure indoo...

Страница 34: ...ing the compressor Start components are not usually required with the scroll compressors used in heat pumps but are available for special cases and where start components are desirable to reduce light dimming Hard start components are available through Prostock Hard Start Components COMPONENTS AND CONTROLS MAXIMUM SYSTEM CHARGE VALUES Charge Limit Model Compressor Without Size Model Number Crankca...

Страница 35: ...l will initiate a defrost every 34 minutes of compressor run time with the coil temperature below 35 F If the coil sensor fails the defrost control will not initiate a defrost Test Mode The test mode is initiated by shorting the TEST pins The unit must have an active heat pump heating call to enter the test mode In this mode of operation the enable temperature is ignored and all timers are sped up...

Страница 36: ...n the low side pressure rises to approximately 40 psig when the low pressure automatically resets If the low pressure switch trips 3 times within 120 minutes of operation during a particular call for heating operation the defrost control will lock out compressor and outdoor fan operation If the lock out due to low pressure occurs at an outdoor ambient temperature below 5 F the defrost control will...

Страница 37: ...nit for better thermostat temperature display Heat Pump Thermostat Warning Light Kit RXPX D01 This component senses a compressor lock out and tells the thermostat service light to come on This will let the homeowner know that service is needed on the system NOTE Warning light on thermostat will come on during a 5 minute compressor time delay and for 5 seconds during defrost while the compressor is...

Страница 38: ...alve Closed Restricted Indoor Metering Device Restricted Filter Drier Dirty Outdoor Coil Inoperative Outdoor Fan Overcharge Recirculation of Outdoor Air Noncondensibles HigherThan Ambient Air Entering OutdoorCoil Wrong Outdoor Fan Rotation Inadequate Ducts Outdoor Check Valve Closed Restricted Filter Drier Outdoor Unit Running Low on Charge Restricted Indoor Metering Device Restriction in System R...

Страница 39: ...Valve Closed Restricted Outdoor Metering Device Restricted Filter Drier Dirty Indoor Coil Inoperative Indoor Fan Overcharge Noncondensibles Dirty Filters Inadequate Ducts Wrong Indoor Fan Rotation Outdoor Check Valve Closed Restricted Filter Drier Outdoor Unit Running Low on Charge Restricted Outdoor Metering Device Restriction in System Recirculation of Outdoor Air Wrong Outdoor Blower Rotation R...

Страница 40: ... Defrost No Defrost Wrong Defrost Control Timer Setting Poor Sensor Location Low System Charge Poor Sensor Location Wrong Defrost Control Timer Setting ReversingValve Stuck No DefrostTimer Control Power Failed Defrost Control Failed Defrost Relay During Defrost Defrost System Wind Affecting Defrost Mechanical Checks Flowchart DIAGNOSTICS ...

Страница 41: ... ton Charge per procedure attached to unit service panel Recover refrigerant Evacuate and recharge Add filter drier Compressor short cycles Incorrect voltage Defective overload protector Refrigerant undercharge At compressor terminals voltage must be 10 of nameplate marking when unit is operating Replace Check for correct voltage Add refrigerant Registers sweat Low indoor airflow Increase speed of...

Страница 42: ... unit Correct and complete diagnosis High line voltage Power company problem Have problem corrected High head pressure Overcharge Check system charge Dirty heat pump coil Clean coil Faulty or wrong size heat pump fan motor Replace fan motor Faulty fan blade or wrong rotation Replace fan blade Replace with correct rotation motor Recirculation of air Correct installation Additional heat source Check...

Страница 43: ...ck for correct ohms Voltage present on line side of com pressor contactor only Thermostat Check for control voltage to contactor coil Compressor control circuit High pressure switch Low pressure switch Ambient thermostat Solid state protection control or internal thermal sensors Compressor timed off on control or interlock No voltage on line side of compressor contactor Blown fuses or tripped circ...

Страница 44: ... REMEDY Compressor failures Line tubing too large Reduce pipe size to improve oil return Low suction pressure Low charge Check system charge Refrigerant leaks Repair and recharge Cold noisy compressor Slugging Dilution of oil with refrigerant Observe piping guidelines Noisy compressor Migration Check crankcase heater Cold sweating compressor Flooding Check system charge Low load Reduced airflow Di...

Страница 45: ... Remove external equalizer line restriction Undersized TEV Replace with correct valve Loss of charge from power head sensing bulb Replace power head or complete TEV Charge migration from sensing bulb to power head Warm power head with warm wet cloth Does valve operate correctly now Ensure TEV is warmer than sensing bulb Valve feeds too much refrigerant with low superheat and higher than normal suc...

Страница 46: ...il Ensure blower is moving proper air CFM Remove Correct any airflow restriction Superheat and suction pressure fluctuate valve is hunting Expansion valve is oversized Install correct TEV Sensing bulb is affected by liquid refrigerant or refrigerant oil flowing through suction line Relocate sensing bulb in another position around the circumference of the suction line Unequal refrigerant flow throu...

Страница 47: ...or TXV Feeler Bulb Charge Lost Low Low High High Low Poorly Insulated Indoor Sensing Bulb High High Low Low High HEATING MODE TROUBLESHOOTING TIPS SYSTEM PROBLEM INDICATORS DISCHARGE PRESSURE SUCTION PRESSURE SUPERHEAT Normal 5 15 F 15 9 C SUBCOOLING Normal See Charging Chart COMPRESSOR AMPS Overcharge High High OK High High Undercharge Low Low OK or High Low Low Liquid Restriction Drier Low Low H...

Страница 48: ...48 FOR SINGLE PHASE WITH PSC FAN MOTORS WIRING DIAGRAMS Wiring Diagrams ...

Страница 49: ...49 Wiring Diagrams WIRING DIAGRAMS 3 PHASE 208 230V MODELS ...

Страница 50: ...50 Wiring Diagrams WIRING DIAGRAMS FOR 3 PHASE 460 575V ...

Страница 51: ...51 ...

Страница 52: ...52 CM 0215 ...

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