Trane RAUJ-C20 Installation, Operation And Maintenance Manual Download Page 115

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SS-SVX11K-EN

115

Figure 76.

25 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

Dischar

pre

ssure,

PSIG

25T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Figure 77.

30 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

ischarge

pre

ssure,

PSIG

30T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Figure 78.

40 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

Discha

rge

pressur

40T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Figure 79.

50 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

Dischar

ge pr

essure

, PS

50T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Figure 80.

60 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

Discha

rge

essure

, PS

60T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Figure 81.

80 Ton cooling cycle pressure curve

105°F OD

95°F OD

85°F OD

75°F OD

65°F OD

Suction pressure, PSIG

105

115

125

135

145

250

300

350

400

450

500

550

ischa

rge

pressur

PSIG

80T Cooling Cycle Pressure Curve

All compressors and condenser fans running

Stta

arrtt--U

Summary of Contents for RAUJ-C20

Page 1: ...led adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and...

Page 2: ...ar r p pr ro op pe er r P PP PE E f fo or r t th he e j jo ob b b be ei in ng g u un nd de er rt ta ak ke en n c co ou ul ld d r re es su ul lt t i in n d de ea at th h o or r s se er ri io ou us s i...

Page 3: ...ou ul ld d r re es su ul lt t i in n e eq qu ui ip pm me en nt t f fa ai il li in ng g a an nd d p po os ss si ib bl ly y e ex xp pl lo od di in ng g w wh hi ic ch h c co ou ul ld d r re es su ul lt t...

Page 4: ...nents 46 Refrigerant Piping 49 Typical Field Installed Evaporator Piping Dual Circuit Examples 51 Hot Gas Bypass for Commercial Comfort Cooling Applications 52 Optional Pressure Gauges 52 Final Refrig...

Page 5: ...n Rotation 105 System Airflow Measurement 106 Measuring Airflow 106 Alternate Method 106 Preliminary Expansion Valve Adjustment 107 Adding Preliminary Charge 108 Compressor Start Up All Systems 109 Mo...

Page 6: ...6 SS SVX11K EN Wiring Diagrams 128 T Ta ab bl le e o of f C Co on nt te en nt ts s...

Page 7: ...ned Digit 11 Ambient Control 0 Standard 1 0 F Low Ambient Dampers Digit 12 Agency Approval 0 None 3 cULus 60 Hz only Digit 13 Disconnect Switch 0 None J Non Fused Disconnect Switch Digit 14 Hot Gas By...

Page 8: ...rol 0 Standard 1 0 F Low Ambient Dampers Digit 12 Agency Approval 0 None 3 cULus 60 Hz only Digit 13 Circuits A Dual Digit 14 Hot Gas Bypass Valve 0 None B Hot Gas Bypass Valve Digit 15 Suction Servic...

Page 9: ...vered Notify the carrier s terminal of the damage immediately by phone and by mail Concealed damage must be reported within 15 days Request an immediate joint inspection of the damage with the carrier...

Page 10: ...h a Discharge Line Thermostat If the temperature of the line exceeds 230 F the thermostat interrupts the 115V control circuit for the compressors and all the compressors on the circuit will de energiz...

Page 11: ...ls Ship with Area Control Panel Compressors Condenser Fans Figure 3 Component layout and ship with locations 80 to 120 ton units2 Condenser Coil Access Panels Lifting Bracket 2 side Condenser Air Inta...

Page 12: ...240 1 240 1 240 1 240 1 240 1 240 1 240 1 240 Storage Capacity b lbs 18 7 18 7 18 7 23 5 25 0 25 0 47 1 50 0 62 9 Refrigerant Data c Type R 410A Operating Charge d lbs 11 9 11 8 11 8 22 7 23 4 23 8 57...

Page 13: ...guration 2 000 4 000 6 000 8 000 10 000 Condensing Unit Only 0 982 0 960 0 933 0 902 0 866 Condensing Unit Air Handling Unit Combination 0 983 0 963 0 939 0 911 0 881 Condensing Unit With Evaporator 0...

Page 14: ...applicable system support equipment as possible to minimize refrigerant piping lengths Allow adequate clearance for water and refrigerant piping connections space to perform service procedures i e rea...

Page 15: ...60 tons 80 to 120 tons A Front 72 96 B Back 72 96 C Left control panel side 42 48 D Back 42 48 E Distance between units side by side 192 192 F Pit installation front and back 192 192 G Pit installati...

Page 16: ...13 16 LOW AMBIENT DAMPER SEE NOTE 2 FAN GRILLE FAN GRILLE CONTROL PANEL SEE DETAIL A 26 13 16 CONTROL BOX BOTTOM SEE DETAIL A 13 6 1 4 57 5 8 1 1 4 8 72 1 2 3 4 X 4 MTG HOLES DOOR 43 1 4 W 180 DEG SW...

Page 17: ...1 5 8 O D SUCTION LINE CONTROL PANEL SIDE CONTROL PANEL SIDE DIMENSIONAL CONNECTION DRAWING 20 TON UNIT PLAN VIEW OF UNIT CONNECTION DRAWING CONNECTION DRAWING CONTROL PANEL SIDE VIEW OF UNIT ISOMETR...

Page 18: ...15 VOLT CONTROL 88 1 2 60 1 8 74 1 4 18 11 1 2 88 5 16 78 4 3 8 6 1 8 5 3 16 1 13 16 13 6 1 4 CONTROL PANEL SEE DETAIL A 27 1 4 57 5 8 1 1 4 8 72 1 2 DOOR 43 1 4 W 180 DEG SWING 2 1 3 4 3 4 X 4 MTG HO...

Page 19: ...A C F RONT A A A C A A C F RONT A A A C SUCTION LINE 18 9 16 SUCTION LINE LIQUID LINE COIL 25 30 TON UNIT DIMENSIONAL CONNECTION DRAWING PLAN VIEW OF UNIT CONNECTION DRAWING CONNECTION DRAWING CONTROL...

Page 20: ...4 x 4 1 2 SLOT FOR 115 VOLT CONTROL 4 LINE VOLTAGE ACCESS CONTROL PANEL SEE DETAIL A 6 1 4 32 3 16 BOTTOM OF CONTROL BOX SEE DETAIL A DOOR 43 1 4 W 180 DEG SWING 2 3 6 8 36 1 8 36 1 8 1 1 4 1 4 5 3 4...

Page 21: ...00 0 5 7 16 18 1 2 5 13 16 LIQUID LINE HOT GAS BYPASS OPTIONAL SUCTION LINE VOLTAGE ACCESS CONTROL PANEL CONTROL PANEL SIDE CONTROL PANEL SIDE 40 TON UNIT DIMENSIONAL CONNECTION DRAWING PLAN VIEW OF U...

Page 22: ...2 SLOT FOR 115 VOLT CONTROL 4 LINE VOLTAGE ACCESS BOTTOM OF CONTROL BOX SEE DETAIL A 13 6 1 4 32 1 4 CONTROL PANEL SEE DETAIL A DOOR 43 1 4 W 180 DEG SWING 8 1 8 48 7 8 48 7 8 85 5 8 3 4 X 6 MTG HOLES...

Page 23: ...QUID LINE SERVICE VALVE OPTIONAL 12 7 11 16 10 13 16 29 3 4 38 3 4 CONTROL PANEL VOLTAGE ACCESS CONTROL PANEL SIDE CONTROL PANEL SIDE AA A AA A 5 7 16 5 13 16 18 1 2 DIMENSIONAL CONNECTION DRAWING 50...

Page 24: ...3 1 2 5 3 16 113 13 16 22 1 2 16 79 1 4 114 88 5 16 13 LOW AMBIENT DAMPER SEE NOTE 2 32 3 16 BOTTOM OF CONTROL BOX SEE DETAIL A 6 1 4 3 4 X 6 MTG HOLES DOOR 43 1 4 W 180 DEG SWING 8 1 8 48 7 8 48 7 8...

Page 25: ...TIONAL 12 7 11 16 10 13 16 29 3 4 38 3 4 CONTROL PANEL VOLTAGE ACCESS CONTROL PANEL SIDE CONTROL PANEL SIDE A A A A A A 5 7 16 5 13 16 18 1 2 60 TON UNIT DIMENSIONAL CONNECTION DRAWING NOTES 1 VERIFY...

Page 26: ...1 4 7 9 14 LOW AMBIENT DAMPER SEE NOTE 2 6 1 4 13 16 5 16 BOTTOM OF CONTROL BOX SEE DETAIL A CONTROL PANEL SEE DETAIL A 2 1 4 x 1 1 4 24 VOLTAGE CONTROL WIRING 3 4 X 8 MTG HOLES DOOR 43 1 4 W 180 DEG...

Page 27: ...PANEL SIDE 18 5 16 SUCTION LINE LIQUID LINE DETAIL A VOLTAGE ACCESS CONTROL PANEL CONTROL PANEL SIDE 5 9 16 9 3 8 LIQUID LINE COIL COMPRESSOR 6 SERVICE VALUE OPTIONAL SEE DETAIL A DIMENSIONAL CONNECTI...

Page 28: ...4 1 2 SLOT FOR 115 VOLT CONTROL FAN GRILLE LOW AMBIENT DAMPER SEE NOTE 2 BOTTOM OF CONTROL BOX SEE DETAIL A 16 3 16 CONTROL WIRING 6 1 4 13 3 4 X 8 MTG HOLES DOOR 43 1 4 W 180 DEG SWING 8 1 1 4 97 5...

Page 29: ...PANEL CONTROL PANEL SIDE CONTROL PANEL SIDE SERVICE VALUE OPTIONAL SEE DETAIL A SERVICE VALUE OPTIONAL SEE DETAIL A DIMENSIONAL CONNECTION DRAWING 100 120 TON UNIT DETAIL A DETAIL DRAWING NOTES 1 VERI...

Page 30: ...REMOTE CHILLER EVAPORATOR OPTION OPTION INCLUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BR...

Page 31: ...EVAPORATOR OPTION OPTION INCLUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATI...

Page 32: ...RATOR OPTION OPTION INCLUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT...

Page 33: ...PORATOR OPTION OPTION INCLUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION K...

Page 34: ...LUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT INSTALLATION INSTRUCTI...

Page 35: ...LUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT INSTALLATION INSTRUCTI...

Page 36: ...LUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT INSTALLATION INSTRUCTI...

Page 37: ...NCLUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT INSTALLATION INSTRUC...

Page 38: ...LUDES 1 BRAZED PLATE HEAT EXCHANGER SHIPS SEPARATE FROM RAUJ CONDENSING UNIT 1 INSTALLATION KIT TO INCLUDE 2 MOUNTING BRACKETS 1 INSULATION KIT 1 MOUNTING BRACKET INSULATION KIT INSTALLATION INSTRUCTI...

Page 39: ...3 30 1598 1623 40 2482 2532 50 2826 2868 60 2803 2853 80 4870 4940 100 5539 5622 120 5995 6121 Table 5 EVP remote chiller weights Unit Size tons Weights lbs Shipping Operating 20 54 67 25 86 105 30 11...

Page 40: ...ly y d da am ma ag ge e E En ns su ur re e t th ha at t a al ll l t th he e l li if ft ti in ng g e eq qu ui ip pm me en nt t u us se ed d i is s p pr ro op pe er rl ly y r ra at te ed d f fo or r t...

Page 41: ...etail Figure 29 Lifting bracket locations 80T 30 1 4 176 7 16 1 13 16 7 0 Lifting Brackets 20 40T 78 88 5 16 1 13 16 5 3 16 7 0 Lifting Brackets 100 120T 5 1 8 20 1 16 108 5 8 108 11 16 20 1 16 5 3 16...

Page 42: ...Tons X Y 20 40 8 33 0 25 40 6 32 8 30 40 6 32 8 40 43 4 46 0 50 52 3 45 9 60 52 1 45 9 Table 6 RAUJ center of gravity continued CG Locations Tons X Y 80 86 0 55 8 100 110 9 55 0 120 111 5 54 2 I In ns...

Page 43: ...80 125 108 125 108 125 168 25 168 25 Y 87 125 1 25 87 125 1 25 87 125 1 25 87 125 1 25 100 120 X 8 00 8 00 105 625 105 625 121 625 121 625 219 25 219 25 Y 87 125 1 25 87 125 1 25 87 125 1 25 87 125 1...

Page 44: ...ve en nt t c co ol ll la ap ps si in ng g K Ke ee ep p h ha an nd ds s a an nd d o ot th he er r b bo od dy y l li im mb bs s c cl le ea ar r o of f e el le ev va at te ed d b ba as se e r ra ai il l...

Page 45: ...NI IN NG G H He ea av vy y O Ob bj je ec ct t F Fa ai il lu ur re e t to o f fo ol ll lo ow w i in ns st tr ru uc ct ti io on ns s c co ou ul ld d r re es su ul lt t i in n d de ea at th h o or r s s...

Page 46: ...for shipping damage and material shortage If damage or shortage is found file a freight claim and notify Trane office Verify installation location of the unit will provide the required clearance for...

Page 47: ...s See Figure 33 p 47 for placement location Suction Filter Filter Drier Field Supplied Install the filter in the suction line upstream of the compressors To prevent oil accumulation suction filters sh...

Page 48: ...lve in order to maintain satisfactory superheat control down to lower valve loading conditions and to compensate for pressure drops between the expansion valve and superheat control point evaporator r...

Page 49: ...The access ports in the liquid line allows the unit to be charged with liquid refrigerant and is used to determine sub cooling Refrigerant Piping N NO OT TI IC CE E C Co om mp pr re es ss so or r D Da...

Page 50: ...the latest edition of Application Guide SS APG012 EN Do not use suction line traps Do not use double risers Avoid putting liquid lines underground Route suction lines as short and direct as possible...

Page 51: ...r should be as close to the solenoid valve as possible N No ot te e If the liquid line riser exceeds 10 feet refer to Tube Size and Component Selection publication number SS APG012 EN Typical Field In...

Page 52: ...ation chapter for ship with location on unit The mounting location and tubing configuration for the optional pressure gauges after field installation is shown below 1 Assemble the valve depressor flar...

Page 53: ...e es ss su ur re e m ma ay y b be ec co om me e c co om mb bu us st ti ib bl le e i in n t th he e p pr re es se en nc ce e o of f a an n i ig gn ni it ti io on n s so ou ur rc ce e l le ea ad di in n...

Page 54: ...t ts s W WA AR RN NI IN NG G E Ex xp pl lo os si io on n H Ha az za ar rd d F Fa ai il lu ur re e t to o f fo ol ll lo ow w s sa af fe e l le ea ak k t te es st t p pr ro oc ce ed du ur re es s b be e...

Page 55: ...er ra an nt t l le ea ak ks s o or r d da am ma ag ge e t to o t th he e h he ea at t e ex xc ch ha an ng ge er r T Th he e b br ra az ze e c co on nn ne ec ct ti io on ns s a at t t th he e h he ea...

Page 56: ...m control Flow rates exceeding the maximum listed could result in very high pressure drop erosion of the heat exchanger and damage to the water flow switch Water Temperature Limits N NO OT TI IC CE E...

Page 57: ...diameter dimensional locations depend on unit size Water connections at the evaporator are grooved Field supplied 1 2 x 14 NPTE stainless steel or PVC plug required Locate freezestat and discharge tem...

Page 58: ...13 2 7 1 6 1 200 16 2 8 7 7 4 240 22 9 12 3 10 6 280 16 5 14 2 320 21 3 18 3 360 26 7 23 0 400 28 2 Chilled Water Flow Switch N NO OT TI IC CE E E Ev va ap po or ra at to or r D Da am ma ag ge e F Fa...

Page 59: ...entering and leaving chilled water pressure and strainer condition Water Shutoff Valves Provide shutoff valves in the Supply and Return pipe near the chiller so the gauge s thermostats sensors strain...

Page 60: ...piping to avoid vibration transmission Insulate all water piping Use appropriate pipe sealant on all threaded connections Final Water Piping Connections 1 Flush all water piping in the system thoroug...

Page 61: ...1 8 1 2 18 6 22 2 142 158 53 70 575 60 3XL 3 1 4 1 2 15 8 19 2 103 136 45 60 380 415 50 3XL 3 1 7 1 2 18 6 22 2 142 158 52 70 30 200 60 3XL 3 4 1 1 2 56 9 56 9 351 351 142 175 230 60 3XL 3 4 1 1 2 48...

Page 62: ...XL 12 4 1 3 6 52 52 74 5 320 320 485 428 500 460 60 3XL 12 1 8 2 6 25 4 25 4 37 2 160 160 215 209 225 575 60 3XL 12 1 4 1 6 20 3 20 3 29 8 135 135 175 167 175 120 200 60 3XL 12 4 1 4 6 83 9 83 9 83 9...

Page 63: ...gi iz ze ed d V Ve er ri if fy y t th ha at t n no o p po ow we er r i is s p pr re es se en nt t w wi it th h a a v vo ol lt tm me et te er r W WA AR RN NI IN NG G P Pr ro op pe er r F Fi ie el ld d...

Page 64: ...cable Constant Volume Units Install the zone thermostat with or without switching subbase Connect properly sized control wiring to the proper termination points between the zone thermostat and the un...

Page 65: ...ir ri in ng g M MU US ST T b be e p pe er rf fo or rm me ed d b by y q qu ua al li if fi ie ed d p pe er rs so on nn ne el l I Im mp pr ro op pe er rl ly y i in ns st ta al ll le ed d a an nd d g gr...

Page 66: ...alue does not equal a standard fuse size as listed in NEC 240 6 select the next lower standard fuse rating N No ot te e If selected MOP is less than the MCA then select the lowest standard maximum fus...

Page 67: ...t System control switch wiring No Control units Step controller wiring No Control units Chilled water pump interlock wiring EVP units Chilled water flow switch wiring EVP units Outside air thermostat...

Page 68: ...t ts s b be ef fo or re e s se er rv vi ic ci in ng g F Fo ol ll lo ow w p pr ro op pe er r l lo oc ck ko ou ut t t ta ag go ou ut t p pr ro oc ce ed du ur re es s t to o e en ns su ur re e t th he e...

Page 69: ...t control panel 80 to 120 tons Field Provided Power Supply Provide disconnect switch and overload protection as required 1 Unit Control Panel 7TB8 12 11 10 9 8 7 6 5 4 3 2 1 R EC W R B R W MP 1 MP 2 M...

Page 70: ...p pr ro op pe er r l lo oc ck ko ou ut t t ta ag go ou ut t p pr ro oc ce ed du ur re es s t to o e en ns su ur re e t th he e p po ow we er r c ca an n n no ot t b be e i in na ad dv ve er rt te en...

Page 71: ...SS SVX11K EN 71 Figure 46 Field connection diagram RAUJ 20 to 60 tons no system control 2307 9122 I In ns st ta al ll la at ti io on n E El le ec ct tr ri ic ca al l...

Page 72: ...72 SS SVX11K EN Figure 47 Field connection diagram RAUJ 20 to 60 tons all system controls I In ns st ta al ll la at ti io on n E El le ec ct tr ri ic ca al l...

Page 73: ...SS SVX11K EN 73 Figure 48 Field connection diagram RAUJ 80 to 120 tons no system control 2307 9144 I In ns st ta al ll la at ti io on n E El le ec ct tr ri ic ca al l...

Page 74: ...ments of the space decreases less air is delivered to the zone conversely as the cooling requirements of the space increases a greater volume of air is delivered to the zone The descriptions of the fo...

Page 75: ...75 Figure 50 Field connection diagram RAUJ 20 to 60 tons variable air volume control 2307 9122 N No ot te e See wiring notes on Figure 47 p 72 I In ns st ta al ll la at ti io on n E El le ec ct tr ri...

Page 76: ...EN Figure 51 Field connection diagram RAUJ 80 to 120 tons variable air volume control 2307 9144 N No ot te e See wiring notes on Figure 49 p 74 I In ns st ta al ll la at ti io on n E El le ec ct tr r...

Page 77: ...r Inlet Holes 1 3 4 1 3 16 1 3 16 1 3 4 13 5 8 Sensor Dimensions 7 8 The sensor serves two functions Sends supply air temperature data to Discharge Air Controller as an analog input to control the eco...

Page 78: ...g g r re em mo ot te e d di is sc co on nn ne ec ct ts s b be ef fo or re e s se er rv vi ic ci in ng g F Fo ol ll lo ow w p pr ro op pe er r l lo oc ck ko ou ut t t ta ag go ou ut t p pr ro oc ce ed...

Page 79: ...Mode of operation i e Cool Heat Auto or Off and the Fan Mode of operation i e On or Auto N No ot te e As long as the status of the system is in an occupied mode the supply fan will operate continuous...

Page 80: ...tching Subbase Honeywell Q667 See Note 2 Captive Terminal Mounting Screws Heat LED Cool LED 2 x 4 Outlet Box Field Supplied Wall Plate Electric Thermostat Honeywell T7067 Mounting Screws Thermostat Co...

Page 81: ...plete the continuity checks listed in Thermostat Wiring W WA AR RN NI IN NG G H Ha az za ar rd do ou us s V Vo ol lt ta ag ge e F Fa ai il lu ur re e t to o d di is sc co on nn ne ec ct t p po ow we e...

Page 82: ...he space temperature By offsetting the actual zone thermostat setpoint up or down the MEC can closer control the zone comfort level It serves as a low limit for the system when the supply air temperat...

Page 83: ...diagram RAUJ C20 60 EVP chiller applications 2307 9122 N No ot te e See wiring notes on previous figure Field Connection Diagram Notes RAUJ 20 to 60 tons No System Controls I In ns st ta al ll la at...

Page 84: ...gram RAUJ 80 to 120 tons EVP chiller applications 2307 9144 N No ot te e See wiring notes on previous figure Field Connection Diagram Notes RAUJ 80 to 120 tons No System Controls I In ns st ta al ll l...

Page 85: ...ro ou un nd de ed d f fi ie el ld d w wi ir ri in ng g p po os se es s F FI IR RE E a an nd d E EL LE EC CT TR RO OC CU UT TI IO ON N h ha az za ar rd ds s T To o a av vo oi id d t th he es se e h ha...

Page 86: ...3 2B2 40 Ton Control Panel Low Ambient Dampers 2B4 2B5 2B1 2B2 20 Ton 25 30 Ton Control Panel Low Ambient Damper 2B1 2B3 2B2 Control Panel Low Ambient Damper 2B1 2B2 Figure 60 Condenser fan locations...

Page 87: ...B Compressor 1A Compressor 1B Control Panel Compressor 1A Compressor 1B Compressor 2A Compressor 2B Compressor 1A Compressor 1B Compressor 2A Compressor 2B Control Panel Control Panel Control Panel Fi...

Page 88: ...Control Box HPC Wires 4S1 4S2 Blk Control Box Connection Wires Control Box Connection Wires Control Box Connection Wires 1B 2B if present J Box Shown w o Cover Power Wires from Control Box T3 T2 Blue...

Page 89: ...2 M1 M2 Unit Operation VAV W7100A Discharge Air Controller 7U11 The discharge air controller used in Variable Air Volume applications is a Honeywell W7100A This microprocessor controller is designed t...

Page 90: ...e the setpoint Region 1 a stage of mechanical cooling is added based on time and the amount of deviation from setpoint If the discharge air temperature remains above the setpoint the W7100A energizes...

Page 91: ...over emphasized See Thermal Expansion Valve Manufacturer Settings tables in Start Up chapter for proper superheat adjustment Accurate measurements of superheat will provide the following information E...

Page 92: ...to 120 ton units Controlling Device Fan ON Fan OFF Fan Identification Interlock Circuit 1 1K1 Closed 1K1 Open 4B2 4B6 a Interlock Circuit 1 1K1 1K2 Closed 1K1 1K2 Open 4B2 4B5 4B6 a Interlock Circuit...

Page 93: ...ser fan on 25 30 Ton units plus 2B6 on 50 60 Ton units The thermostat opens when the ambient temperature reaches 30 F and closes at approximately 33 F Hot Gas Bypass Operation The HGBP valve regulates...

Page 94: ...n each circuit I Im mp po or rt ta an nt t COMPRESSOR SERVICE VALVES MUST BE FULLY OPENED BEFORE START UP SUCTION DISCHARGE AND LIQUID LINE I Im mp po or rt ta an nt t After liquid line service valves...

Page 95: ...0 microns or less Open Valves B and C Evacuate the system to a pressure of 300 microns or less As vacuum is being pulled on the system it may appear that no further vacuum is being obtained yet the pr...

Page 96: ...the W7100A accessory tool kit Trane part TOL 0101 or Honeywell part 4074EDJ 1 Turn all control switches to the OFF position to deactivate the Evaporator Fan and the Mechanical Cooling 2 Turn the main...

Page 97: ...al to 49 F within 1 to 2 minutes the LEDs should turn Off as the cooling outputs stage Off 16 As soon as all of the cooling LEDs are Off remove the 1780 ohm resistor from terminals 6 and 7 and re inst...

Page 98: ...ol circuit switch 1S2 in the unit control panel is OFF 2 At the Discharge Air Controller in the unit control panel disconnect the wire connected to Terminal T1 Use a digital ohmmeter to measure the re...

Page 99: ...e t to o d di is sc co on nn ne ec ct t p po ow we er r b be ef fo or re e s se er rv vi ic ci in ng g c co ou ul ld d r re es su ul lt t i in n d de ea at th h o or r s se er ri io ou us s i in nj j...

Page 100: ...nstall the red dust cover 19 Plug the reset relay s 1K11 and 1k12 if applicable back into their receptacle 20 Turn the control switch 1S2 to the On position to restore power to the control system Figu...

Page 101: ...ou us s i in nj ju ur ry y W Wh he en n i it t i is s n ne ec ce es ss sa ar ry y t to o w wo or rk k w wi it th h l li iv ve e e el le ec ct tr ri ic ca al l c co om mp po on ne en nt ts s h ha av ve...

Page 102: ...oling blue setpoint lever from left to right As the cooling setpoint rises the voltage signal should decrease and the Cooling LED dim 5 To check the Heating output signal place the voltmeter leads bet...

Page 103: ...e actual temperature the 6RT1 is out of range replace it N No ot te e Before condemning the sensor verify that the connecting cable resistance is not excessive Refer to the Field Installed Control Wir...

Page 104: ...e es se en nt t w wi it th h a a v vo ol lt tm me et te er r W WA AR RN NI IN NG G L Li iv ve e E El le ec ct tr ri ic ca al l C Co om mp po on ne en nt ts s F Fa ai il lu ur re e t to o f fo ol ll lo...

Page 105: ...ed d a as s i it t c co ou ul ld d r re es su ul lt t i in n a ac ct tu ua at to or r d da am ma ag ge e If adjustment is required 1 Remove the sensor leads from the input terminals 6 and 7 for circui...

Page 106: ...n the RAUJ 115V control circuit the field power wiring to the RAUJ unit could be improperly phased Phase protection module 1U3 located in the RAUJ control box interrupts control circuit power when imp...

Page 107: ...em load step system charge piping and condenser fan control The thermal expansion valves must be adjusted as part of the unit start up procedure Do not adjust valves beyond manufacturer s available no...

Page 108: ...se er ri io ou us s i in nj ju ur ry y D Di is sc co on nn ne ec ct t a al ll l e el le ec ct tr ri ic c p po ow we er r i in nc cl lu ud di in ng g r re em mo ot te e d di is sc co on nn ne ec ct ts...

Page 109: ...pers and or hot gas bypass operating if applicable Disable low ambient dampers in the Open position refer to the Low Ambient Damper Adjustment section and verify hot gas bypass is not operating before...

Page 110: ...pr re es ss so or r c co ou ul ld d b be e r ru un nn ni in ng g b ba ac ck kw wa ar rd ds s i if f i it t i is s n no oi is sy y l lo ow w s si id de e s sh he el ll l g ge et ts s h ho ot t s su uc...

Page 111: ...charging below 80 F outdoor temperature disconnect unit power and reconnect the control wiring for these fans at this time Follow the procedures discussed earlier to confirm proper rotation of these...

Page 112: ...h he e p po ow we er r c ca an n n no ot t b be e i in na ad dv ve er rt te en nt tl ly y e en ne er rg gi iz ze ed d W WA AR RN NI IN NG G H Ha az za ar rd do ou us s V Vo ol lt ta ag ge e F Fa ai il...

Page 113: ...convert the pressure reading to a corresponding saturated vapor temperature N No ot te e On many Trane fan coil units an access valve is provided close to the expansion valve bulb location This valve...

Page 114: ...B 2A 2B 60 5 1A 1B 1C 2A 2B 80 6 1A 1B 1C 2A 2B 2C 100 120 1 1A 17 2 1A 2A 33 3 1A 1B 2A 50 4 1A 1B 2A 2B 66 5 1A 1B 1C 2A 2B 83 6 1A 1B 1C 2A 2B 2C 100 Pressure Curves N No ot te e For the following...

Page 115: ...charge pressure PSIG 40T Cooling Cycle Pressure Curve All compressors and condenser fans running Figure 79 50 Ton cooling cycle pressure curve 105 F OD 95 F OD 85 F OD 75 F OD 65 F OD Suction pressure...

Page 116: ...nit Turn the 115 volt control circuit switch 1S2 Off and program the Night Setback NSB panel if applicable for proper unoccupied operation Refer to the programming instructions for the specific panel...

Page 117: ...SS SVX11K EN 117 S St ta ar rt t U Up p...

Page 118: ...F Super heat F Sub cool F Compr Oil level Suct Press psig Disch Press psig Liquid Press psig Liq Line Temp F Super heat F Sub cool F ok Low ok Low ok Low ok Low ok Low ok Low ok Low ok Low ok Low ok L...

Page 119: ...an n b be ea ar ri in ng gs s a as s n no ot t e en no ou ug gh h g gr re ea as se e T To o p pr re ev ve en nt t d da am ma ag ge e t to o f fa an n b be ea ar ri in ng gs s d do o n no ot t o ov ve...

Page 120: ...r dual row microchannel condenser coil applications seek pressure coil wand extension through the local Trane Parts Center N No ot te e DO NOT use any detergents with microchannel coils Pressurized wa...

Page 121: ...u ui ip pm me en nt t o or r c co om mp po on ne en nt ts s a as s d de es sc cr ri ib be ed d b be el lo ow w c co ou ul ld d r re es su ul lt t i in n e eq qu ui ip pm me en nt t f fa ai il li in ng...

Page 122: ...ving refrigerant is required the service technician must comply with all federal state and local laws Compressor Replacement Discoloration of the oil indicates that an abnormal condition has occurred...

Page 123: ...d to be at one compressor interchange any two compressor leads to correct the motor phasing Precision Suction Restrictor RAUJ tandems with unequal compressors and all RAUJ trios use precision suction...

Page 124: ...1 63 1 90 7 72 5 72 5 104 3 120 Ton 200 105 105 2 105 2 121 121 121 230 90 7 90 7 90 7 104 3 104 3 104 3 Table 44 Compressor circuit breakers 460 575 volts Dial Setting Unit Voltage 1A 2A 1B 2B 1C 2C...

Page 125: ...e Size Condenser Fan Fuse 1F1 1F3 on 20 30 Ton 1F1 1F6 on 40 60 Ton 20 60 Ton 200 230 460 575 380 415 Class RK5 25 Amp 15 Amp Control CKT Fuse 1F7 20 30 40 60 All Class CC FNQ R 3 2 6 25 Compressor Pr...

Page 126: ...u us se ed d w wi it th h f fa al ll l r re es st tr ra ai in nt t e eq qu ui ip pm me en nt t t th ha at t w wi il ll l n no ot t a al ll lo ow w a an n i in nd di iv vi id du ua al l t to o r re ea...

Page 127: ...shall not be obligated to pay for the cost of lost refrigerant No liability whatever shall attach to the Company until said products have been paid for and then said liability shall be limited to the...

Page 128: ...densing Unit RAUJ 20 60 Ton units 2307 9212 Connection Main Control Box Raceway Devices Split System Condensing Unit RAUJ 20 60 Ton units 2307 9122 Field Connection Diagram Split System Condensing Uni...

Page 129: ...SS SVX11K EN 129 N No ot te es s...

Page 130: ...130 SS SVX11K EN N No ot te es s...

Page 131: ...SS SVX11K EN 131 N No ot te es s...

Page 132: ...s For more information please visit trane com or tranetechnologies com Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications...

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Trane RAUJ-C20, Installation, Operation And Maintenance Manual

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