Carrier 48ZT Spezifikationen

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

10Table 1B — Physical Data (48ZC,ZL,ZR) (cont) LEGENDUNIT 48ZC,ZL,ZR 075 090 105RETURN/EXHAUST FAN Plenum Fan, 47.13 in. (Any motor

100VENTILATION-AIR CIRCULATION (Continuous Fan) —Turn unit power on. Set system selector switch at OFF, HEAT,or COOL position, and set fan switch at O

101Power exhaust (PE) fan no. 1 is equipped with a variablefrequency drive, matched to the motor size. The VFD output isdetermined by the VFD’s intern

102SERVICEOptional Staged Gas Unit ControlACCESSORY NAVIGATOR™ DISPLAY — The accessoryNavigator display module provides the user interface to theStag

103Service Access — All unit components can be reachedthrough clearly labeled hinged access doors. These doors arenot equipped with tiebacks, so if he

104MODULATING POWER EXHAUST DAMPER MOTOR —The modulating power exhaust damper motor is located in thereturn-air end of the unit.On unit sizes 030-050,

105CERAMICBAFFLECLIPHEAT EXCHANGERTUBESNOTE: High heat consists of sections 1-3. Low heat consists of sec-tions 1 and 2 only.Fig. 116 — Gas Section De

106AdjustmentsRETURN/EXHAUST FAN MOTOR PLATEAdjust using a 3/4-in. wrench on the adjusting bolts:1. Loosen holddown bolts. (See Fig. 121).2. Turn the

107MODULATING POWER EXHAUST DIFFERENTIALPRESSURE SWITCH — On size 030-050 units, the differen-tial pressure switch is located in the auxiliary control

1081. Remove top cover from motor to gain access to motorterminals and cam adjustments.2. Disconnect controller from motor. Connect RED,WHITE, and BLU

109BELT INSTALLATION AND TENSIONING1. Turn off unit power.2. Adjust motor plate so belts can be installed withoutstretching over the grooves of the pu

11Table 1C — Physical Data (48ZT,ZV,ZW)UNIT 48ZT,ZV,ZW 075 090 105NOMINAL CAPACITY (tons) 75 80 100OPERATING WEIGHT (lb)Base Unit without EconomizerLo

110Fig. 128 — Auxiliary Switch Stroke AdjustmentFig. 129 — Auxiliary Switch AdjustmentFig. 130 — Pulley AlignmentFig. 131 — Condenser-Fan Adjustment (

111The TXV is set to maintain 10 to 13 F superheat leaving theevaporator coil. It controls the flow of refrigerant to the evapo-rator coils.Refrigerat

112Moisture/Liquid Indicator — A clear flow of liquidrefrigerant indicates sufficient charge in the system. Bubblesindicate undercharged system or the

113Relief Devices — All units have relief devices to protectagainst damage from excessive pressures (i.e., fire). These de-vices protect the high and

114CONTROL BOARD CHECKOUT — To check out the con-trol board motor, conduct the following 4 tests.Test 1:1. Apply 24 VAC power to terminals T0 and T2 o

115BASIC CHECK — Refer to Fig. 136 for control board com-ponent identification.NOTE: All plugs (except P1) are labeled for easy identifica-tion. Plug

116Symptom: Condenser fan no. 1 will not operate.1. Turn unit power off. Disconnect plugs P1 and P3 from thecontrol board.2. Check for continuity betw

117Symptom: First or second stage of heating will not operate.1. Turn unit power off. Disconnect plugs P1 and P3.2. Check continuity between Pin W1 at

118Power Exhaust Variable Frequency DriveNOTE: The VFDs (part no. TOSVERT130-E3) are speciallymodified for use on Carrier equipment. Some specificatio

119Table 59 — Power Exhaust VFD (TOSVERT130-E3) Default Program Parameter Values*These settings differ from the Toshiba defaults and are required for

12Table 1C — Physical Data — (48ZT,ZV,ZW) (cont) LEGENDTable 2 — Operating Weights of Options and Accessories*Includes hood.UNIT 48

120RESTORING FACTORY POWER EXHAUST VFDDEFAULTS — The original factory configuration values aresaved in the memory of the power exhaust VFD and can ber

121RETURN/EXHAUST VFD OPERATION — When trouble-shooting the power exhaust VFD, check first that all requiredconditions for RE VFD operation are satisf

122Table 63 — Carrier Default Program Parameter Values (Return Fan VFD)*These settings differ from the Toshiba defaults and are required for Carrier a

123TROUBLESHOOTING AND DIAGNOSTICSLEGENDPROBLEM SOLUTIONCOMPRESSOR DOES NOT RUNContactor Open1. Power off.1. Restore power.2. Fuses blown in field pow

124TROUBLESHOOTING AND DIAGNOSTICS (cont)LEGENDPROBLEM SOLUTIONCOMPRESSOR RUNNING BUT COOLING INSUFFICIENTSuction Pressure Low1. Refrigerant charge lo

125LEGENDIDM —Induced-Draft MotorIGC —Integrated Gas Unit ControllerNOTE: Thermostat Fan Switch in the “AUTO” position or sensor-equipped unit.Fig. 14

126LEGEND FOR FIG. 141-145AFS —Air Flow SwitchC —ContactorCB —Circuit BreakerCCB —Control Circuit BreakerCH —Crankcase HeaterCLO —Compressor LockoutCL

127Fig. 141 — Component Arrangement, Constant Volume Units, Sizes 055-070 Shown

128Fig. 141 — Component Arrangement, Constant Volume Units, Sizes 055-070 Shown (cont)

129Fig. 142 — Label Diagram, Constant Volume Units, Sizes 055-070 Shown

13Table 3 — Supply Fan Drive Data*Sizes 040,050 only. NOTE: Part numbers are Browning Manufacturing Corp. reference.Table 4 — Power Exhaust Fan Drive

130Fig. 142 — Label Diagram, Constant Volume Units, Sizes 055-070 Shown (cont)

131Fig. 143 — Label Diagram, Gas Sections, Sizes 055-070 Shown

132Fig. 144 — Label Diagram, Staged Gas Sections, Sizes 030-050

133Fig. 145 — Label Diagram, Staged Gas Sections, Sizes 055-105

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

CL-1START-UP CHECKLISTMODEL NO.:______________________________________DATE: ___________________________________________SERIAL NO.: __________________

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

14*Fig. 1 — Roof Curb; Sizes 030-050UNIT TYPE DIMENSIONUNIT SIZE030,035UNIT SIZE040,050VERTICAL SUPPLY & RETURN W/GAS HEATAB21′-81/16″13′-311/16″2

15*Fig. 2 — Roof Curb; Sizes 055-070 and Sizes 075-105 without High Capacity Power ExhaustUNIT TYPE DIMENSIONUNIT SIZE055-105VERTICAL SUPPLY & RET

16*Fig. 3 — Roof Curb; Sizes 075-105 with High Capacity Power Exhaust

17*Fig. 4 — Condenser Section Roof Curb (Size 055 and 060 Only)

18*Fig. 5 — Condenser Section Roof Curb (Size 070-105 Only)

199 3/4""X"-NO GASKET4 REF.DETAIL A-AAA"X"4132CONDENSEREND SUPPORT55Fig. 6 — Gasket Location on Roof Curb (48ZA,ZE,ZJ055-105

2CONTENTS (cont)Page• SUPPLY FAN AND POWER EXHAUST MOTOR PLATE• RETURN/EXHAUST BUILDING PRESSURE SWITCH• MODULATING POWER EXHAUST DIFFERENTIAL PRESSUR

20Fig. 9 — Rigging Label — Size 030-050 Units (Standard Chassis)Fig. 8 — Gasket Location on Roof Curb (48ZT,ZV,ZW075-105 Units)NOTICE TO RIGGERS1. ALL

21Fig. 11 — Rigging Label — Size 030-050 Units (Extended Chassis)NOTICE TO RIGGERS1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.2. DO NOT ATTEMPT TO FOR

22Fig. 13 — Rigging Label — 48ZT,ZV,ZW075-105 Units (High Capacity Power Exhaust Units)NOTICE TO RIGGERS1. ALL PANELS MUST BE IN PLACE WHEN RIGGING.2.

2332AB41Fig. 14 — Weight Distribution and Center of GravityUNITS 48ZA,ZE,ZJ SIZECORNER WEIGHTSTOTALAB1 2 3 4 ft-in. ft-in.VERTICAL SUPPLY AND RETURN/L

24Condensate Drain Connections — There is a totalof three drain connections required on each unit: one primary(on right-hand side of the unit) and two

25Fig. 15 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ030,035 (Standard Chassis)

26Fig. 16 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ040,050 (Standard Chassis)

27______Fig. 17 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ055-070 (Standard Chassis)

28Fig. 18 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ075-105 (Standard Chassis)

29Fig. 19 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ030,035 (Extended Chassis)

3 INSTALLATIONJobsite Survey — Complete the following checks beforeinstallation.1. Consult local building codes and the NEC (NationalElectrical Code)

30Fig. 20 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ040,050 (Extended Chassis)

31Fig. 21 — Base Unit Dimensional Drawing — 48ZA,ZE,ZJ055,060 (Extended Chassis)

32Fig. 22 — Base Unit Dimensional Drawing — 48ZT,ZV,ZW075-105 (Units with High Capacity Power Exhaust)

33Fig. 23 — Base Unit Dimensional Drawing — 48ZC,ZL,ZR075-105 (Units with Return/Exhaust Fan)

34MAINABCMABC*Fig. 24 — Primary Drain ConnectionA = 4-in. (102 mm) min — 030-070 7-in. (178 mm) min — 075-105Fig. 25 — Slab Mounted CondensateDr

35409.7 [10407]255.2 [6482]267.1 [6785]347.1 [8818]MAINABCDRAIN HERE DRAIN HEREORCONDENSERANDCOMPRESSORENDCONDENSERANDCOMPRESSORENDDRAIN HERE DRAIN HE

36Install Outdoor Hoods (48ZA,ZC,ZE,ZJ,ZL,ZRUnits)UNIT SIZES 030-05025% Outdoor-Air Hoods (Units Without Economizer Option) (Fig. 31)1. Outdoor-air ho

37POWER EXHAUST (FIXED)SIDE HOOD(ROTATEOPEN)SIDE HOOD(ROTATEOPEN)END HOOD(FIXED)Fig. 34 — Economizer with Power ExhaustOutdoor-Air Hood Installation (

38INSTALL LARGE HOODS — Large hoods are shipped dis-assembled in the economizer section of the unit behind thelarge economizer hood shipping cover. Se

39Field Wire RoutingUNIT SIZES 030-050 — Field wiring can be brought into theunit through the basepan and roof curb or through the cornerpost in the s

4Table 1A — Physical Data (48ZA,ZE,ZJ) LEGENDBASE UNIT 48ZA,ZE,ZJ 030 035NOMINAL CAPACITY (tons) 30 35OPERATING WEIGHT (lb) Standar

40Units with Factory-Installed Disconnect — The factory-installed disconnect is an interlocking, door-type. The discon-nect handle locks the door when

41Fig. 42 — Disconnect Location — 48ZA,ZE,ZJ055-105 and 48ZC,ZL,ZR075-105 UnitsUse care when drilling into corner post to avoid damage to con-denser c

422313 12 1122 21DISCONNECTPER NECEQUIPGNDFIELDWIREFACTORYWIREFig. 46 — Factory-Installed Disconnect Location(Sizes 055-105)Fig. 47 — Field Power Wiri

43Table 7 — Electrical Data, 48ZA,ZE,ZJ030 Units LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motorsrate

44Table 8 — Electrical Data, 48ZA,ZE,ZJ035 Units LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motorsrate

45Table 9 — Electrical Data, 48ZA,ZE,ZJ040 Units LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motorsrate

46Table 10 — Electrical Data, 48ZA,ZE,ZJ050 Units LEGEND NOTE: Units use 1 (low heat) or 2 (high heat) combustion fan motorsrat

47Table 11 — Electrical Data, 48ZA,ZE,ZJ055 Units LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motorsrat

48Table 12 — Electrical Data, 48ZA,ZE,ZJ060 Units LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motorsrat

49Table 13 — Electrical Data, 48ZA,ZE,ZJ070 Units LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motorsrat

5Table 1A — Physical Data (48ZA,ZE,ZJ) (cont) LEGENDBASE UNIT 48ZA,ZE,ZJ 040 050NOMINAL CAPACITY (tons) 40 50OPERATING WEIGHT (lb)

50Table 14 — Electrical Data — 48ZA,ZE,ZJ075-105 UnitsLEGENDNOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motors rated at 460 v, single

51Table 15 — Electrical Data — 48ZC,ZL,ZR075-105 UnitsLEGENDNOTE: Units use 2 (low heat) or 3 (high heat) combustion fan motors rated at 460 v, single

52Table 16 — Electrical Data — 48ZT,ZV,ZW075-105 UnitsUNITSIZEVOLTAGE3 PH,60 HzVOLTAGERANGECOMPRESSOROFM IFMEXHAUST FANBASE UNIT WITHEXHAUST FANNo. 1N

53Table 16 — Electrical Data — 48ZT,ZV,ZW075-105 Units (cont)LEGEND NOTE: Units use 2 (low heat) or 3 (high heat) combustion fanmotors rated at 460 v,

54Air Pressure Tubing — Before options such as InletGuide Vanes (IGV), Variable Frequency Drive (VFD),and/or Modulating Power Exhaust can operate prop

55Fig. 50 — Auxiliary Control Box Details; 48ZJ030-050 Units LEGENDBP —Building PressureDP —Duct PressurePL —PlugPS —Pressure Switch

5648ZL Units — The units use a pressure transducer for sensingbuilding pressure. The BP transducer is located in the unitauxiliary control box. See Fi

57Fig. 53 — Modulating Power Exhaust Differential Pressure Switch (48ZJ,ZL,ZW055-105 Units)TO BUILDINGPRESSURE(FIELD SUPPLIED)BPTHILOPORT TO OUTDOOR R

58Compressor MountingSIZES 030-090 — Each compressor is supported on4 springs. The springs are compressed for shipment. After theunit is installed

5948ZE,ZR,ZV Units:• Demand limit• Space temperature reset• VAV (variable air volume) remote panel• Modulating power exhaust48ZJ,ZL,ZW Units:• HSIO ke

6Table 1A — Physical Data (48ZA,ZE,ZJ) (cont) LEGENDBASE UNIT 48ZA,ZE,ZJ 055 060 070NOMINAL CAPACITY (tons) 55 60 70OPERATING WEIGH

60NUTCOMPRESSOR MOUNTING FOOTCOMPRESSOR MOUNTING RAILFig. 60 — Rear View of CompressorMounting Rail Assembly — Size 105 UnitsFig. 61A — Motormaster® I

61Fig. 61B — Motormaster® I Control Sensor Location, Sizes 040 and 050070 ONLY CONTROL BOXCIRCUIT NO. 1 COILSENSORLOCATION COILHEADER ENDFig. 61

62CONTROL BOXCIRCUIT NO. 1 COILSENSORLOCATIONSENSORLOCATION COILHEADER ENDCOIL HEADER END090 AND 105 ONLY COILHEADER ENDFig. 61D — Motorma

63CONTROLS INSTALLATIONConstant Volume Units — The 48ZA,ZC,ZT unitsmay be used in applications with additional control features,options, or accessorie

64NOTES:1. Dimensions shown in ( ) are in millimeters.2. Two baffles are required per unit.Fig. 63 — Wind Baffle Mounting DetailsUNITSIZES48ZDIMENSI

65Accessory 2-Step Demand Limit (32GB400274) (Fig. 69) —Install the 2-step demand limit module in unit control boxas close as possible to the processo

66PIC Control Wiring — See Fig. 71 for space tempera-ture sensor connections to main and auxiliary control boxes.The recommended types of control wiri

67HEAT INTERLOCK RELAY (VAV Units Only) — Not Nec-essary For Digital Air Volume Applications) — Variable airvolume (VAV) units using optimal start (mo

68SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4REDBLKREDBLKREDBLKREDBLKTO PROCESSORMODULE NO. 1REDBLK2TB2SIZES055-105SIZES030-0501TB331TO PROCESSORMODULE NO. 1R

69GRAVIO2112J2 J1OUTSIDE AIRRELATIVE HUMIDITYACCESSORY2112J2 J1SPACE/RETURNRELATIVE HUMIDITYTB4BLUORNCh. 34PSIO NO. 2Ch. 3324VFIELD-SUPPLIED24-V ISOLA

7Table 1A — Physical Data (48ZA,ZE,ZJ) (cont)UNIT 48ZA,ZE,ZJ 075 090 105NOMINAL CAPACITY (tons) 75 90 105OPERATING WEIGHT (lb)Base Unit without Econom

70 PSIONO. 2J724V91105 INDOOR AIRQUALITY ACY+-FIELD-SUPPLIED 24-V ISOLATEDPOWER SUPPLY1617 PSIONO. 2J724V8271 INDOOR AIRQUALITY ACYFIELD-SUPPLIED 24

71+_BLKWHTRED+_BLKWHTRED+_BLKWHTRED+_BLKWHTREDDPT1DPT2SPT1SPT2BLKBLKBLKBLKBLKREDREDBRNBRNWHTWHTRESRESBLKREDWHTWHTWHTWHTRESRES781011131410K OHM 1/2 WAT

72Supply-Air Thermistors (Staged Gas UnitsOnly) — Supply-air thermistors are a field-installed, factory-provided component. Three supply-air thermisto

73RJ11 PLUG WIRING — Units on the CCN can be monitoredfrom the space at the sensor through the RJ11 connector, if de-sired. To wire the RJ11 connector

74Table 20 — Smoke Control Modes LEGEND *Power exhaust option required for this mode.†Applicable to VAV and PIC units with approp

75TB25SW1TB2030-050 UNITSSW1055-105 UNITSTB2236TB2REDPNKCB4SW2WIRES REMOVEDFROM CB4REDY2REMOVEJUMPERA1-T1ECONOMIZERMOTORSW3SW4BLKREDSW-6REDREMOVEDFROM

76Table 23 — Smoke Control Switches — Variable Air Volume Units (48ZE,ZR,ZV)NOTE: All switches are shown in ‘‘as installed’’ (power OFF or deen-ergize

77VIONCNOCWHTREMOVEDFROM C-DPSSW-8SW-7ALL UNITSGRAREMOVE JUMPER030-050 UNITS56TB2TB2 SW-112TB2TB2 SW-2REMOVE JUMPER89TB2TB2 SW-5REMOVE JUMPERTB3SW-3 T

78Table 25 — Smoke Control Switches — PIC Controls Units(48ZJ,ZL,ZW)**Units with PIC controls require installation of Controls Option Mod-ule (PSIO2),

79Gas Piping — Unit is equipped for use with natural gasonly. Installation must conform with local building codes, or inthe absence of local codes, wi

8Table 1A — Physical Data (48ZA,ZE,ZJ) (cont) LEGENDUNIT 48ZA,ZE,ZJ 075 090 105OPTIONAL POWER EXHAUST Centrifugal, 18 x 15 in. (Any

80Installing Flue/Inlet Hoods — The flue and inlethoods are shipped in a package taped to the basepan in the fansection. The flue (outlet) hoods are p

81(ONLY)HOODDEFLECTORHOODFLUE ANDFLUEHOODLARGEINLETINLETLARGEHOODLOCATIONHIGH-HEATSMALLINLETHOODFLUE HOODAND FLUEDEFLECTORFLUE ANDDEFLECTORLOCATIONONL

82PRE-START-UPDo not attempt to start the air-conditioning system until fol-lowing checks have been completed.System Check1. Check the outside air hoo

8312. Check supply fan belts, sheaves, and bearings. Check thelubrication of the fan and motor bearings. Check bearingand bearing set screws for tight

84Table 29 — Fan Performance — 48ZA,ZE,ZJ030 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

85Table 30 — Fan Performance — 48ZA,ZE,ZJ035 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

86Table 31 — Fan Performance — 48ZA,ZE,ZJ040 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

87Table 32 — Fan Performance — 48ZA,ZE,ZJ050 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

88Table 33 — Fan Performance — 48ZA,ZE,ZJ055 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

89Table 34 — Fan Performance — 48ZA,ZE,ZJ060 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

9Table 1B — Physical Data (48ZC,ZL,ZR)UNIT 48ZC,ZL,ZR 075 090 105NOMINAL CAPACITY (tons) 75 90 105OPERATING WEIGHT (lb)Base Unit without EconomizerLow

90Table 35 — Fan Performance — 48ZA,ZE,ZJ070 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high heat, or high-capacit

91Table 36 — Fan Performance — 48ZA,ZC,ZE,ZJ,ZL,ZR,ZT,ZV,ZW075 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high hea

92Table 37 — Fan Performance — 48ZA,ZC,ZE,ZJ,ZL,ZR,ZT,ZV,ZW090 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high hea

93Table 38 — Fan Performance — 48ZA,ZC,ZE,ZJ,ZL,ZR,ZT,ZV,ZW105 Units*LEGEND*Fan performance tables do not include pressure drops for low heat,high hea

94Table 39 — Fan Performance — Power Exhaust(Size 030-050 Units)Bhp — Brake HorsepowerTable 40 — Fan Performance — Power Exhaust(Size 055-070 Units)Bh

95Table 43 — Component Pressure Drops (in. wg)(Size 030-050 Units)(Size 055-070 Units)(Size 075-105 Units)*Bag filter cfm limit is 25,000.†The 48ZT,ZV

96Manual Outdoor-Air Inlet AdjustmentsMANUAL OUTDOOR-AIR DAMPER (Units WithoutEconomizer Option) — All units except those equipped witha factory-insta

97START-UPFor 48ZA,ZC,ZT (constant volume) units, complete the Ini-tial Check and Start-Up sections in this book.For 48ZE,ZR,ZV (variable air volume)

98Size 055-075 Units — Condenser fan no. 1 is energized withcompressor no. 1. Condenser fan no. 2 (and no. 4 on size070,075) is energized with compres

99Tempering of supply air is desirable when rooftop units areoperating in ventilation mode (economizer only operation) atlow outdoor temperatures. At