Carrier 50JS Specifications download pdf

HEA33NG & COOLING

50JS, 50JX

Single-Packaged Heat Pump Units

Visit www.c,_ier.com

Installation, Start-Up,

and Service Instructions

NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS ..................................................... t

INTRODUCTION .......................................................................... 2

RECEIVING AND INSTALLATION .......................................... 2

Check Equipment ...................................................................... 2

IDENTIFY UNIT ................................................................ 2

INSPECT SHIPMENT ........................................................ 2

Provide Unit Support ................................................................ 2

ROOF CURB ....................................................................... 2

SLAB MOUNT ................................................................... 2

GROUND MOUNT ............................................................ 2

Provide Clearances .................................................................... 2

Rig and Place Unit .................................................................... 2

INSPECTION ...................................................................... 2

INSTALLATION ................................................................ 2

Select and Install Ductwork ..................................................... 4

CONVERTING HORIZONTAL DISCHARGE UNITS TO

DOWNFLOW (VERTICAL) DISCHARGE UNITS ......... 5

Provide for Condensate Disposal ............................................. 6

Install Electrical Connections ................................................... 7

HIGH-VOLTAGE CONNECTIONS ................................ 10

ROUTING POWER LEADS INTO UNIT ...................... 10

CONNECTING GROUND LEAD TO GROUND LUG. 10

ROUTING CONTROL POWER WIRES (24-V) ............ 13

SPECIAL PROCEDURES FOR 208-V OPERATION ...15

PRE-START-UP .......................................................................... 17

START-UP ................................................................................... 17

Check for Refrigerant Leaks .................................................. 17

Start-Up Adjustments .............................................................. 17

CHECKING COOLING AND HEATING

CONTROL OPERATION ................................................. 17

CHECKING AND ADJUSTING REFRIGERANT

CHARGE ........................................................................... 18

REFRIGERANT CHARGE .............................................. 18

NO CHARGE .................................................................... 18

LOW CHARGE COOLING ............................................. 19

TO USE COOLING CHARGING CHARTS .................. 19

INDOOR AIRFLOW AND AIRFLOW ADJUST-

MENTS .............................................................................. 19

MAINTENANCE ......................................................................... 20

Air Filter .................................................................................. 21

Indoor blower and motor ........................................................ 21

OUTDOOR COIL, INDOOR COIL, AND

CONDENSATE DRAIN PAN ............................................... 22

Outdoor fan ............................................................................. 23

Electrical controls and wiring ................................................ 23

Reliigerant circuit ................................................................... 24

Indoor airflow ......................................................................... 25

Metering device ...................................................................... 25

Liquid line strainers ................................................................ 25

High Flow Valves ................................................................... 25

Time-delay relay ..................................................................... 25

Loss of charge switch ............................................................. 25

Check defrost thermostat ........................................................ 25

Defrost Thermostat ................................................................. 25

TROUBLESHOOTING ............................................................... 25

START-UP CHECKLIST ............................................................ 25

NOTE TO INSTALLER -- READ THESE INSTRUCTIONS

CAREFULLY AND COMPLETELY before installing this unit.

Also. make sure the Owner's Manual and Service Instructions are

left with the unit after installation.

Fig. 1--Model 50JS/50JX

C99001

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be

hazardous due to system pressure and electrical components. Only

trained and qualified personnel should install, repair, or service

air-conditioning equipment.

Untrained personnel can perform ba.qic maintenance functions of

cleaning coils and filters. All other operations should be performed

by trained service personnel. When working on air-conditioning

equipment, observe precautions in the literature, tags, and labels

attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use

quenching cloth for unbrazing operations. Have fire extinguisher

available for all brazing operations.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 101 CatalOg No. 535-00072 Printed in U.S.A. Form 50JS,JX-4SI Pg 1 Replaces: 50JS,JX-2SI & 3SI

1 2 3 4 5 6 ... 31 32

Summary of Contents

Page 1 - Installation, Start-Up

HEA33NG & COOLING50JS, 50JXSingle-Packaged Heat Pump UnitsVisit www.c,_ier.comInstallation, Start-Up,and Service InstructionsNOTE: Read the entire

Page 2

(36" 54"/1" (25ram) MIN.TRAPOUTLET +]2" (50ram)MIN.C99013Fig. 12_ondensate TrapOETAIL ASCALF 0250TIGHTEN STRAPPING SECURELYWITH TE

Page 3 - FRONT VIEW

UNIT 50JSSIZE018024030036042048O6OTable 5--Electrical Data--50JSVOLTAGECOMPRESSORRANGEV-PH-HZMIN MAX RLA LRA208/230-1-60 187 253 90 48208/230-1-60 187

Page 4 - WI IIIII

Table 6--Electrical Data---50JXUNIT 50JXSIZE02403OO36042O4806OV-PH-HZVOLTAGERANGEMIN MAXCOMPRESSOROEM IFMFLA FLARLA LRA208/230 140 187 253 10.8 56 0.9

Page 5 - Tf ° '_ •

MkXI_iJM WI_[ I _ WIBL__IZE 2 AwG _ _UPPLYI III w2 Y[LUSED wITH POw[RA{¢ESSOffY [OULP GND,t ...OPTIO_ O_LY IHEAI[N OPIIO gL K,MAX _lff[r_O _P FO_ 5 K

Page 6 - Fig. 5_Roof Curb Dimensions

RED--WI6 GRNAUIO_>Fri ON' UppL _UPLH"_[_T 1H2 kL W2SUPPL HEAT _FI[LD TH[RMOSIATS[E NOTE#2Im- qIIILIDRrONL¢ISCHEMATIC208123@3-60[0FMREDYEL

Page 7 - Fig. 8---Threading Belt

AXIMIJ_ WIRESIZE Z AWG_ F_ELD WI BLK--ii IIIIL_oWER_w2 IE L_W BLtJ--SUPP YEOUIP GND-- -IIIIUSED WITHELECT HEAlOpIlON ONLYUSEO 'IIH -- '_H/AT

Page 8 - Table 1--Physical Data

LEGEND C@FLA -- Full Load AmpsLRA -- Locked Rotor Amps II_il_MCA -- Minimum Circuit AmpsMOCP -- Maximum Overcurrent ProtectionRLA -- Rated Load AmpsCK

Page 9 - Table 2--Physical Data

PRE-START-UPFailure to observe the following warnings could result inserious personal injury or death:I. Follow recognized safety practices and wear p

Page 10 - Fig, 9_Suggested Rigging

LEGENDHPS - High Pressure SwitchLCS - Loss of Charge Switch_ Accuratel = Metering Device] Arrow indicates direction of flowOUTDOOR COILLI ¸Me_n_tcsFig

Page 11

7OBalance Point Worksheet6OB- 50co:to°8_ou 40_Q-_ Ci_ 30m___ 2olOoBased on Indoor Entering Air of 70 F and Rated CFM-lO10 17 20 30 40Outdoor Air Temp

Page 12

Improper installation, adjustment, alteration, service, mainte-nonce, or use can cause explosion, fire. electric shock, orother occurrences, which cou

Page 13 - ,MAX _lff[

Balance Point Worksheet7O6Om 50z8F-_m&8_i_ 30__ 2010Based on Indoor Entering Air of 70 F and Rated CFM-lO lO 17 20 30 40Outdoor Air Temp (Deg F)47

Page 14 - 208123@3-60

Table 7--Wet Coil Air DeliveryUnit 50JS 018-060 (Deduct 10 percent for 208-V)*UNIT018024303642486OMOTORSPEED 0.0 0.1 0.2WaRsLowCfmWaRsMedCfmWaRsHigh C

Page 15 - -- -IIII

Table 8_Wet Coil Air DeliveryUnit 50JX 024-060 (Deduct 10 percent for 208-V)*UNIT0243036424860MOTORSPEED 0,0 0.1 0.2 0.3WaRs 275 273 271 270LowCfm 923

Page 16 - LEGEND C@

6891 100;Os5.48:414:zO345 (n 50 "(018) 60HZ CHARGING CHART207120.0 3o.o .o.o so.o 6oo _o.oSUCTION LINE TEMPERATURE (°F)17 I I I-1 4 10 16 21 27SU

Page 17 - Fig. 21--Fan Blade Clearance

(042) 60HZ CHARGING CHART)Lr'CObqTEt4;F125 52115 46105 4195 3585 2975 2465 1855 1345 720.0 3o.o 40.0 so.o 60.0 700 s0.0SUCTION LINE TEMPERATURE (

Page 18 - NO CHARGE

Table 10_ELECTRIC HEAT PRESSURE DROP TABLESmall CabinetCFMSTATIC500 600 700 800 900 1000 1100 1200 1300 1400 1500 16005 kw 0.00 0.00 0.00 0.00 0.00 0.

Page 19 - Balance Point Worksheet

(024_eOh_ Q._p_e_G O_**RT ;toonE_I200 :_0_ 400 SO0 e00 700 S00SUCTK_NL_E rEe,_- R_JF_ _=G F)J i q i i,7 I 4 10 16 2t 27SL,_T_e_ Ln,_ TEMPERATURE ICEG

Page 20

_FEEDERTUBEDEFROSTTHERMOSTATFig. 40_Defrost ThermostatC99092Fig. 39_Refrigerant CircuitC990972?

Page 21

SYMPTOMCompressor and outdoorfan will not startCompressor will not startbut condenser fan runsTable 11_ooling and Heating Troubleshooting ChartCAUSEPo

Page 22 - Table 8_Wet Coil Air Delivery

SYMPTOMSuction pressure too lowCompressor runs but outdoor fan does notIFM* does not runIFM* runs when it should be offIFM* operation is intermittent•

Page 23 - Step 4--Outdoor fan

/-. [VAP0_AT_ C01t"l TOP VIEWREOt,qRE3 _/JE,_*_CES TO _TIm.E MAIl_ I_OUIRED CLE/g_k_£ FOff O_A]I_N AM) S_5_'K:IN_kt4LLIMETf_S [IN] MILL;_TIR

Page 24 - 048 Unl_0031

Page 25 - Large Cabinet

Page 26 - lll] llll iiiiil

Page 27 - Fig. 39_Refrigerant Circuit

t TOP VIEWRE_ ¢:I.,EARAiV_$TO CCI,_US_ MAlt-MILLIMETERS tIN]TOp 1_ U_lf 355 6 [14 00]DUCt 510£ OF UN)I 50 8 (20Q)SIDE OPPOSIT[ OUCI_ 355 6 [14 OQ]BOfT

Page 28 - Excessive suction pressure

1 2YZX3C00071o1=3• Comer Weight 2-oo:_ Comer Weight 3Corner Weight 4CORNER WEIGHTS (Small CabinetlUnit 24 _O _{_299 320 328o"o0CORNER WEIGHTS (SM

Page 29 - Start-up checklist

Roof Curb for Small CabinetNote A: When unit mounting screw is used,retainer bracket must also be used.VAC unrlbase "__ _(NOTE A) _supplied _Ir_u

Page 30

BMAXIMUM ALLOWABLEDIFFERENCE (in.)A-B B-C A-C1/4 1/4 1/4Fig. 6_Unit Leveling TolerancesC990652 w±mtEVA,RCOIL COND.COILFig. 7--Slab Mounting DetailC990

Page 31

Fig. 10_Typical InstallationC00139Table 1--Physical DataUNIT SIZENOMINAL CAPACITY (ton)OPERATING WEIGHT (lb.)COMPRESSOR QUANTITYTYPEREFRIGERANTREFRIGE

Page 32

UNIT SIZENOMINAL CAPACITY (ton)OPERATING WEIGHT (lb.)COMPRESSOR QUANTITYTYPEREFRIGERANTREFRIGERANT METERING DEVICERefrigerant (R-22) Quantity (lb.)ORI