Carrier 38AH044-134- Manuals

Carrier 38AH044-134– User Manual, Manual in PDF format online.

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User Manual
Manual

User Manual Carrier 38AH044-134

Summary

Page 4 - O O; OOOO; Power Supply Connections

DUAL CKT SINGLE CKT SUCTION CONNECTiON(S) 2Ve" Dia [54 mm] 25/e" Dia [67 mm] LIQUID CONNECTION(S) Va" Dia [22 mm] IVa" Dia [29 mm] SUCTION C 2'-iVi6" [627mm] r-10^/w" [567mm] LIQUID D 1'-10Vi6" [561mm] 1'-10yi6" [567mm] SUCTION {Ckt A) V- 713 / 16 '' [503mm] 2'-%"...

Page 5 - I I; CONTROL BOX

f DUAL CKT SINGLE CKT SUCTION CONNECTION(S) 2Vs'' Dia [54 mm] 2¥8" Dia [67 mm] LIQUID CONNECTION(S) %" Dia [22 mm] IVs" Dia [29 mm] SUCTION C 2'-iyi6" [627mm] 1'-10¥i6" [567mm] LIQUID D r-IOVie" [561mm] 1'-10¥i6" [567mm] SUCTION (Ckt A) 1'-7i3/i6" [503mm] 2'-¥8" [...

Page 6 - Chart 1, Field Power Supply Connections

ooooooO O O O O o OOOO VIEW 5-5 TOP VIEW OF CONTROL BOX SHELF WITH FIELD POWER SUPPLY CONNECTIONS RELIEF VALVES LOCATED ON COMPRESSORS A2 AND B1 ARE EQUIPPED WITH A 3/8' SAE FLARE FOR FIELD CONNECTION SCALE 1:8 (8) MTG HOLES 7/32' DIA 7'-11 9/16' [2‘128mmD -7 -4 11/16'- [2252m(T) HTG HOLES -7'-7 11/...

Page 7 - o o o o

o o o o O O O O O o o o o V I E W 5 - 5 TOP VIEW OF CONTROL BOX SHELF WITH FIELD POWER SUPPLY CONNECTIONS 4 5 / 8 ' ni7mml RELIEF VALVES LOCATED ON COMPRESSORS A2 AND B2 ARE EQUIPPED WITH A 3/8' SAE FLARE FOR FIELD CONNECTION SCALE 1:8 CONTROL BOX END -3 7/16 C392mm] MTG HOLES (8) MTG HOLES 17/32' D...

Page 8 - о о о о

ooooO о о о о о о о о VIEW 5-S TOP VIEW OF CONTROL BOX SHELF WITH FIELD POWER SUPPLY CONNECTIONS SCALE UlO (32) MTG HOLES 17/32' DIA. [13mm] -7 -4 11/16'- [2253mra] I HINGED ACCESS I PANEL ' (CONTROL SIDE) TYPICAL BOTH ENDS ' s | HINGED ACCESS ■ PANEL (POWER SIDE) TYPICAL BOTH ENDS i s RELIEF VALVES...

Page 11 - Ye

Table 4A — Units 38AH094-134 Physical Data — 50/60 Hz (English) 38AH 094 104 124 134 124A 124B 134A 134B OPERATING WEIGHT WITH Cu-AI 5088 5435 3630* 3630* 3630* 3877* REFRIGERANT (Approx) — Lb Cu-Cu 5813 6160 4063* 4063* 4063* 4294* SHIP WEIGHT WITH Cu-AI 5630 5990 3907* 3907* 3907* 4080* COIL PROTE...

Page 13 - must; Fig. 9 — Typical Module with Cover Panels

Step 3 — Make Refrigerant Piping Connections A CAUTION The field-supplied liquid line solenoid valve must be in stalled at the evaporator to avoid possible compressor damage during unit operation. See Fig. 11 (for 38AH044- 084 dual-circuit and 38AH094-134 units), or Fig. 12 (for 38AH044-084 optiona...

Page 14 - Install a field-supplied filter drier and sight glasses in each; Table 5 — Liquid Lift; MAXIMUM LIQUID LIFT; LLS

To achieve good mixing of the refrigerant leaving the evapo rator suction header for proper sensing by the TXV bulb: 1. Install a minimum of two 90-degree elbows upstream of the TXV bulb location. See Fig. 14 (for 38AH044-084 dual-circuit and 38AH094-134 units) or Fig. 15 (for 38AH044-084 optional ...

Page 15 - Fig. 13 — Double Suction Riser Construction

SIGHT GLASS THERMOSTATIC EXPANSION VALVES DRIER OPTION B DUAL FILTER DRIER ARRANGEMENT SIGHT GLASS LOCATION A SIGHT GLASS LOCATION B THERMOSTATIC EXPANSIONVALVES Fig. 12 — Required Location of Soienoid Vaives and Recommended Fiiter Drier and Sight Giass Locations for 38AH044-084 Optionai Single-Circ...

Page 21 - before; CAUTION; TUBES MUST; Protect liquid valves from heat of brazing.; Piping Kit

Units 38AH124 and 134 Piping Kit Connections — The 38AH124 and 134 units are delivered with a factory- supplied suction and liquid piping kit for installation in the 24-in. (610-mm) service space between the 2 unit modules, piping kit allows for a common unit side piping con- ' nection from the indo...

Page 23 - step 4 — Make Electrical Connections; too; See page 24 for Legend and Notes

POWER SUPPLY — Electrical characteristics of available power supply must agree with unit nameplate rating. Supply voltage must be within the limits shown in Tables lOA or lOB, 11 and 12. See Table 13 for control circuit data and Table 14 for fan motor electrical data. IMPORTANT; Operation of unit on...

Page 26 - Table 13 — Control Circuit Electrical Data —

Table 12 — Electrical Data — 50/60 Hz (Units 38AH124, 134) UNIT 38AH MODULE VOLTAGE DESIGNATION COMPRESSOR A1/A2 MODEL NO. NAMEPLATE V-Ph-Hz SUPPLY VOLTAGE* MCA MOCP ICF COMPRESSORt A1 A2 Min Max RLA LRA RLA LRA 124A124B134A 500 06E8275/ 265 208/230-3-60 187 254 249.3 350 617 5 106 4 506 89.7 446 60...

Page 27 - Table 14 — Fan Motor Electrical Data; if

Table 14 — Fan Motor Electrical Data if UNIT 38AH CONDENSER FAN Nameplate V-Ph-Hz Qty Hp (kW) Total kW (No.*) FLA Each (No.*) LRA Each 044 208/230-3-60 4 1 (0 746) 6.2 (1,2) 5 5 (3,4) 6 6 (1.2) 30 0 (3,4) 31.6 460-3-60 (1,2) 2 8 (3,4) 3.3 (1,2) 30 0 (3,4) 31 6 575-3-60 (1-4) 3 4 (1-4) 30 0 380-3-60 ...

Page 30 - I r; I I; bij

38AH094,104 TBS TIME GUARD® CONTROL SDR2 >—ih—ox°- CCPS SDR2 (PAU 0 H] 0 ¿HI] TB4 0 ACCESSORY RELAY PACKAGE CR1 I r I I I I I ! 0— [4]--------- 0^. iLLSl L bij J LI +- L2 A CAUTION Internal TSR-01 relay contacts are rated for 1 amp/24 vac. — — — — = = — — — — - COMMUNICATION OUT - COMMUNICATION I...

Page 31 - MODULE; CCPS

<е 38АН124,134 MODULE 124А OR 134A ТВЗ Ф TIME GUARD®CONTROL SDR2 ^ CCPS -ÆA^ MODULE 124B OR 134B ACCESSORY RELAY PACKAGE CR1 —^—II—vio CR2 TB3 TIME GUARD®CONTROL SDR2 ^ —It—^ CCPS SDR2 ;cAi 'CA2] SDR2 |] Щ И L j U_SEE NOTE 2 _____ I |T ls 1 I T lls I LB2j I___ I - yel A CAUTION Internal TSR-01 re...

Page 33 - as; os

■f: u> u> (TYPICAL 4 STAGE MODUPANEL CONTROL WIRING) 38AH054 SINGLE CIRCUIT (TYPICAL 5 STAGE MODUPANEL CONTROL WIRING) \ GM) tCUTRAL SB (S) , + 1 1 [S m 1 1 1 1 FIELD POWER as os GD SUPPLY t I I____ №C_OIKMNECT__ _ PARALLEL CONDUCTORS (208/230V) _1_______ I______ L_l_____ I- I______ NE£ 0_[SCO...

Page 34 - Fig. 26 — Field Wiring, Single ModuPanelTM Control, Unit 38AH094

MODUPANEL POWER SUPPLY 115-1-GO OR 220 1-50 --- 1- —--------- 1 -CEy >|—1 10 AMP ' AHMS- IFC-AUX (------------- 1 f — -of 1-0- ! 1 ' r* -O'l H>- i NOTES: 1 Factory wiring is in accordance with NEC Field modifications or ad ditions must be in compliance with all applicable codes 2 Wiring for f...

Page 35 - am; Fig. 27 — Field Wiring, Singie ModuPanelTM Control, Unit 38AH104

<É>- MODUPANEL POWER SUPPLY 115-1-60 OR 220 1-50 LI L2 , r F ! E L D S U P P L I E D I , D I S C O N N E C T __ I l L - o -^- cflTO^-i I 0 AMP I — O - ^ ~ -C|| FU b f - L 2 2 I 2 2 J 1 2 1 1 1 2 1 C f T T m in NOTES; 1 Factory wiring is in accordance with NEC Fieid modifications or ad ditions...

Page 36 - mm; aim

MODUPANEL POWER SUPPLY 115-1-60 OR 220-1-50 LI L2 I ^J(23j ISII221 1211211 11211121M l U l l i 1 + ' ^ 1 - V \ 380V, 380/415V, 346V ONLY FIELD POWER ,1 I i NOTES: 1 Factory wiring is in accordance with NEC Fieid modifications or ad ditions must be in compiiance with aii appiicabie codes 2 Wiring fo...

Page 37 - Table 15 — Main Power Connection and Control Circuit Wiring; LEGEND; Step 5 — Install Accessories; Vs; Crankcase heaters must be firmly locked into compres

Table 15 — Main Power Connection and Control Circuit Wiring MAIN POWER CONNECTION CONTROL CIRCUIT Electrical Characteristics (V-Ph-Hz) Qty Terminal Blocks Qty Parallel Conductors* Max Wire Size (kcmil) Control Power (V) Safety Circuit (V) 208/230-3-60 1 6 500 115f 24 460-3-60575-3-60 1 3 500 115t 24...

Page 38 - both compressors must be running

DISCHARGE CYLINDER GAS THERMOSTAT HEADS OIL PRESSURE SWITCH AND CAPACITY CONTROL PRESSURE SWITCH CAPILLARIES MUFFLER FAN CYCLING PRESSURE SWITCR DISCHARGE GAS THERMOSTAT PRESSURE RELIEF VALVE NOTE: Units 38AH044-084 and 38AH124,134 compressors are pan mounted Units 38AH094 and 104 compressors are mo...

Page 39 - Table 16 — Index of Lead/Lag Circuits and Compressors

Preriminary Charge — Refer to GTAC n (General Train ing Air Conditioning), Module 5, Charging, Recovery, Recycling, and Reclamation for charging procedures. Using the liquid charging method and charging by weight proced^ure, charge each circuit with the amount of R-22 listed in Table 3A, 3B, 4A, o...

Page 41 - lU FO; Tl; O e; O I g

LIQUID TEMPERATURE AT LIQUID VALVE (DEG C) LIQUID TEMPERATURE AT LIQUID VALVE (DEG 0) LIQUID TEMPERATURE AT LIQUID VALVE (DEG 0) J__L _L J_ _L _L LIQUID TEMPERATURE AT LIQUID VALVE CDEG F) J___L _L LIQUID TEMPERATURE AT LIQUID VALVE CDEG F) LIQUID TEMPERATURE AT LIQUID VALVE CDEG F) ■n (5‘ u o 3"...

Page 42 - 0/60 Hz — Optional Single Circuit; 0/60 Hz — Optional Single Circuit

ALL OUTDOOR FANS MUST BE OPERATING SINGLE CIRCUIT О 20— 2 ^ 10 - Щ , £ D c H ^Fic E IF , .E0 V E DLJFV / / / F E 51JCE C H \i К E IF E■ELCDV f JF V 4 / / 100 150 200 250 300 LIQUID PRESSURE AT LIQUID VALVE (Psig) T ~T ~T 500 1000 1500 2000 2500 LIQUID PRESSURE AT LIQUID VALVE (kPag) Fig, 35 — Chargi...

Page 43 - CD; CQ; UJ; ni; CJI; ■iC O

■n (5' ■u N} o 3" Q) g)(C = 5' Q.( q LIQUID TEMPERATURE AT LIQUID VALVE (DEG C) U O >ai '• ■ 01 1 O) g °o N C o w to > to ■E> CD U) ■1 I. X I I liquid temperature at liquid valve (DEG F) CQ LIQUID temperature AT LIQUID VALVE (DEG C) LIQUID TEMPERATURE AT LIQUID VALVE (DEG F) LIQUID TEMP...

Page 44 - Table 17 — Fan Cycling Control — Psig (kPag); Switch Opens; NOTE Fans no. 1 and 2 are noncycling Units 38AH074,084 optional

SERVICE ELECTRIC SHOCK HAZARD Turn off all power to unit before servicing.The ON-OFF switch on control panel does not shut off control power; use field disconnect. Coil Cleaning — Clean the colls with a vacuum cleaner, compressed air, water, or a non-wire bristle brush. Refrigerant Circuit LEAK TEST...

Page 45 - Table 18 — Pressure Switch Settings,; Capacity Control; Pressure Relief; — Capacity Control Pressure Switch; Fig. 44 — Unloader Location and Settings

Winter Stsrt Control — A2V4-minute low-pressure switch (LPS) bypass function in the timer prevents nuisance LPS trips during start-up in low-ambient conditions. High-Pressure Switch — This switch has nonadjust- able settings. Figure 29 shows connection on a cylinder head. See Table 18 for pressure s...

Page 47 - Fig. 45 — Accumulator and Fusible Plug; Timer Functions; Fig. 46 — Pressure-Actuated Capacity Control Valve; CONTROL

Fig. 45 — Accumulator and Fusible Plug Timer Functions — (See Timer Cycle, Fig. 47.) Each refrigeration circuit is controlled by an independent timer which allows for the independent operation of each refrigeration circuit. NOTE: Unit 38AH044-084 optional single-circuit units have one timer which c...

Page 48 - SEC i; Fig. 47 — Timer Cycle; Unit Control Box

38AH044-084 DUAL-CIRCUIT UNITS; 38AH094,104 — If circuit A operation is insufiicient for the cooling requirements, the thermostat second stage TC2 closes to bring cir cuit B on-line for cooling. This circuit follows the same se quence of operation as the lead circuit, except a 60-second time dela...

Page 49 - Fig. 48 — Unit Controi Box; UNITS; Fig. 49 — Condenser Fan Adjustment; Required Compressor Modification for 38AH044-; temporary; Compressor Removal

TRANSFORMERS e TIMERS TIME-DELAY RELAY FAN CONTACTORS COMPRESSOR CIRCUIT BREAKERS FAN CIRCUIT BREAKER TERMINAL BLOCKS OIL PRESSURE SWITCHES COMPRESSORCONTACTORS Fig. 48 — Unit Controi Box TOP OF VENTURI ON FAN DECK . (13 mm) TOP OF VENTURI ON FAN DECK ALL 50-Hz UNITS NOTE: Fan rotation is ciockwise ...

Page 50 - Compressor Replacement; COMPRESSOR; Do not reuse drained oil, and do not use any oil that has

9. Units 38AH094, 104: a. Remove 4 large screws securing compressor to the com pressor rails. b. Lift compressor off mounting bolts and remove. Compressor Replacement — Perform the following: 1. Reverse procedure in Compressor Removal section to end of Step 4. 2. Reinstall service valves and safety...

Page 51 - TROUBLESHOOTING

TROUBLESHOOTING PROBLEM SOLUTION COMPRESSOR DOES NOT RUN Contactor Open 1. Power off. 2. Fuses blown in field power circuit. 3. No control power. 4. Thermostat circuit open. 5. Multi-function timer not operating.6. Compressor circuit breaker tripped. 7. Safety device lockout circuit active.8. Low-pr...

Page 54 - PACKAGED SERVICE TRAINING; • Unit Familiarization; Manufacturer reserves the right to discontinue, or change at

PACKAGED SERVICE TRAINING Our packaged service training programs provide an excellent way to increase your knowledge of the equipment discussed in this manual. Product programs cover: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theo...

Page 55 - A. Preliminary Information; OUTDOOR UNIT

A. Preliminary Information OUTDOOR: MODEL NO. START-UP CHECKLIST SERIAL NO. INDOOR: AIR HANDLER MANUFACTURER. MODEL NO.___________________ ADDITIONAL ACCESSORIES________________ SERIAL NO. o c > r~ o z O D Q m O o c: O z Q O O m D z m B, Pre-Start-Up OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? IF ...

Page 56 - Va

C. Start-Up CHECK EVAPORATOR FAN SPEED AND RECORD. CHECK CONDENSER FAN SPEED AND RECORD. AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS: COMP A1 COMP A2 COMP B1 COMP B2 OIL PRESSURE SUCTION PRESSURE SUCTION LINE TEMP DISCHARGE PRESSURE DISCHARGE LINE TEMP ENTERING CONDENSE...