Carrier 48N Instrukcja Użytkownika Strona 1

© Carrier Corporation 2013 Form 48/50N-1PDCarrier’s 48/50N Series commercial packaged rooftops offer:• Puron® refrigerant (R-410A)• multiple efficienc

10UNIT DESIGN AIRFLOW LIMITSNOTE: Applies for standard filters only; additional filtration options mayreduce maximum allowed airflow.UNIT SIZE(NOMINAL

11TWO-STAGE GAS HEATING CAPACITIES - 48N UNITS (Natural Gas on All Units)NOTES:1. Ratings are approved for altitudes to 2000 ft. At altitudes over2000

12MODULATING GAS HEATING CAPACITIES — 48N UNITS(Natural Gas on All Units)NOTES: 1. Ratings are approved for altitudes to 2000 ft. At altitudes over200

1348/50N SIZES N-T (75-150 TONS NOMINAL CAPACITY) LEGEND *Base unit includes: economizer dampers and hoods, filter tracks less filter

1448/50N SIZES N-T (75-150 TONS NOMINAL CAPACITY) (cont) BASE UNIT N P Q R S TNOMINAL CAPACITY (tons) 75 90 105 120 130 150HUMIDI-MIZER® COI

1548/50N SIZES N-T (75-150 TONS NOMINAL CAPACITY) (cont)BASE UNIT N P Q R S TNOMINAL CAPACITY (tons) 75 90 105 120 130 150OPTIONAL POWER EXHAUST Pow

16ABCDEFMULTIPLE UNIT MINIMUM SEPARATIONa48-8682MINIMUM SPACING (ft)UNITABCDEF48 Series12 8 1210101050 Series10 8 8 10 10 10Physical data (cont)

17REFRIGERANT CHARGEUNIT SIZE(NOMINAL CAPACITY, TONS)UNIT CONFIGURATIONCHARGE (LB) CHARGE (LB)UNITS WITHOUT HUMIDI-MIZER® SYSTEMUNITS WITH HUMIDI-MIZE

18FAN AND DRIVE INFORMATIONFANMOTOR HPMOTOR RPMMOTOR SHAFT SIZE (in.)FAN RPMFAN SHAFT SIZE (in.)DRIVE SHEAVE BROWNINGBUSHING TYPEDRIVEN SHEAVE BROWNIN

19FAN AND DRIVE INFORMATION (cont)MOTORSFANMOTOR HPMOTOR RPMMOTOR SHAFT SIZE (in.)FAN RPMFAN SHAFT SIZE (in.)DRIVE SHEAVE BROWNINGBUSHING TYPEDRIVEN S

2Design flexibilityThe 48/50N Series rooftop units with ComfortLink controls are designed to meet all customer requirements for new construction, repl

20STAGING SEQUENCES SIZE N STAGING SEQUENCE WITH MLV (75 TON NOMINAL CAPACITY)*Minimum load valve (MLV). MLV is enabled on Circuit A when decreas-ing

21STAGING SEQUENCES (cont)SIZE P, Q STAGING SEQUENCE WITH DIGITAL COMPRESSOR (90 AND 105 TON NOMINAL CAPACITY)SIZE R, S, T STAGING SEQUENCE (120-150 T

22 OPERATING WEIGHTS OF OPTIONS AND ACCESSORIES (lb)OPTION OR ACCESSORY48/50N UNIT SIZE (TON NOMINAL CAPACITY)N(75)P(90)Q(105)R(120)S(130)T(150)Econom

23 OPERATING WEIGHTS OF OPTIONS AND ACCESSORIES (lb) (cont)NOTE: Please refer to E-CAT for selection.OPTION OR ACCESSORY48/50N UNIT SIZE (TON NOMINAL

24ITEM OPTION* ACCESSORY† SPECIAL ORDER**GAS HEAT (48N units only) Low, Medium or High Gas Heat — Aluminized Heat Exchanger X Low, Medium or High

25LEGEND*Factory installed.†Field installed.**A special order is offered to meet specific customer requirements. Quotationsfor special order options c

26Chassis arrangements (48 Series units)Standard chassis — The standard chassis may be pro-vided with a bottom or side return air opening. The returna

27with optional modulating power exhaust or return fan inconjunction with an optional economizer. Factory-installedoptional electric heat is available

2848N UNIT SIZES N, P, Q (75-105 TON NOMINAL CAPACITY)A48-8684Base unit dimensions

2948N UNIT SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) NOMINAL CAPACITY/EFFICIENCYEXTENDED CHASSISSUPPLY FANFIELD USE FILTER SECTIONBLANK

3Novation® heat exchanger technologyThe Novation heat exchanger design with microchannel condenser coil is a robust, cost effective alternative to tra

3048N UNIT SIZES R, S, T (120-150 TON NOMINAL CAPACITY)A48-8685Base unit dimensions (cont)

3148N UNIT SIZES R, S, T (120-150 TON NOMINAL CAPACITY) *Vertical discharge only.NOMINAL CAPACITY/EFFICIENCYEXTENDED CHASSISHIGH GAS HEAT*

3250N UNITS SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) A50-8823Base unit dimensions (cont)

3350N UNIT SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) NOMINAL CAPACITY/EFFICIENCYEXTENDED CHASSISSUPPLY FANFIELD USE FILTER SECTIONBLANK

3450N UNITS SIZES R, S, T (120-150 TON NOMINAL CAPACITY)a50-8824Base unit dimensions (cont)

3550N UNIT SIZES R, S, T (120-150 TON NOMINAL CAPACITY) NOMINAL CAPACITY/EFFICIENCYEXTENDED CHASSISFIELD USE FILTER SECTIONBLANK SECTION2-

36 0'-1"[25.4] 0'-3"[76.2] 0'-1 3/4"[44]"D" SUPPORTSEE CONDENSERSECTION 10'-8 7/8"[3274] "C&quo

3748N ROOF CURB SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) *Use Applied Rooftop Builder program to select the proper roof curb.NOTE: Dimensions are

38 0'-1"[25.4] 0'-3"[76.2] 0'-1 3/4"[44]"D" SUPPORTSEE CONDENSERSECTION 10'-8 7/8"[3274] "C&quo

3950N ROOF CURB SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) *Use Applied Rooftop Builder program to select the proper roof curb.NOTE: Dimensions are i

4Fan modulationThe ComfortLink controller maintains supply duct pressure on VAV models by monitoring the factory-installed duct pressure transducer an

40ROOF CURB CONDENSER SECTIONa48-8745ROOF CURB CONDENSER SUPPORT UNIT SIZE NOMINAL TONSCOND COILS 2V COND COIL 3VDIM.DDIM.E75 ALL YES — 129.50 —90 ST

41COMPONENT PRESSURE DROPS (in. wg)SIZES N, P, Q (75-105 TON NOMINAL CAPACITY) LEGENDCOMPONENTAIRFLOW (cfm)15,000 19,000

42COMPONENT PRESSURE DROPS (in. wg)SIZES R, S, T (120-150 TON NOMINAL CAPACITY) LEGENDCOMPONENTAIRFLOW (cfm)24,000 28,000 32,000 36,000 40,000 44,

43Please refer to the Applied RTUBuilder software for theunit electrical data. The unit electrical data may also befound in the unit Installation Inst

44Control componentsThe 48/50N Series rooftops use the ComfortLink controlsystem that has been developed for use in Carrier Com-mercial equipment. The

45controls and provides an additional stage of capacity aswell as low load coil freeze protection. The control also in-tegrates the use of an economiz

46heat capacity based on set point and supply-air tempera-ture. The valve control logic will modulate the heating ca-pacity to match the calculated de

47displayed by the ComfortLink scrolling marquee in partsper million (ppm).Outdoor air cfm control — Minimum space ventilationrequirements can also be

484 to 20 mA signal. It can be connected to terminals 8and 9 on TB202.• Remote Static Pressure Reset Set Point — A remotesupply air temperature set po

49• For units connected to the CCN network the user canalso display all the unit information including I/O valuesMaintenance, Configuration, Service,

5• VAV units provide multiple stage,cooling capacity control forimproved part load operation andgreater efficiency• optional digital compressors provi

50Constant volume and staged air volume space tem-perature sensor control — If the space temperature op-eration has been selected using a T55, T56, or

51mode the control will energize the heat interlock relaywhich will signal the terminals to open to the heating posi-tion. Note that for the linkage s

52motor, integrated gas control (IGC) board, 2-stage gasvalve, manifold, and safeties. The modulating system incor-porates an additional modulating ga

53Ductwork — Secure vertical discharge ductwork to theroof curb. Interior installation may proceed before the unitis set in place on the roof. For hor

54B"J"AUXILIARY COIL LOCATIONLOCATION OF COIL TRACKSAUXILIARY COIL LOCATION — in.UNITSIZES 48/50N (TONS)HEIGHT B DISTANCE JN, P, Q (75-105)

55MAIN POWER SUPPLY ENTRYNATURAL GASSUPPLY LINEWITH SHUTOFFCONTROLWIRINGENTRYCONDENSATEDRAIN CONNECTIONSTANDARD UNITSa48-8675Typical piping and wiring

56460VONLYPOWER SCHEMATIC — SIZE N SHOWN (75 TON NOMINAL CAPACITY)a48-8658Typical wiring schematics

57460VONLYa48-8659POWER SCHEMATIC — SIZES P, Q, R, S, T SHOWN (90-150 TON NOMINAL CAPACITY)

58CONTROL SECTION — 48/50N UNITSa48-8660Typical wiring schematics (cont)

59CONTROL SECTION — 48/50N UNITS (cont)a48-8661

6Electric heat units (50N units)The 50N units may be equipped with factory-installed electric heat, with 3 heat sizes available for every unit. The he

60CONTROL SECTION — 48/50N UNITS (cont)a48-8662Typical wiring schematics (cont)

61MODULATING GAS HEAT SCHEMATICa48-8663

62STANDARD GAS HEAT SCHEMATICa48-8664Typical wiring schematics (cont)

63ELECTRIC HEAT SCHEMATICA50-8782

64460-V, 24-V CONTROL SCHEMATICA48-8665Typical wiring schematics (cont)

65575-V, 24-V CONTROL SCHEMATICA48-8666

66STANDARD GAS HEAT, 2 MODULE SCHEMATICA48-8667Typical wiring schematics (cont)

67STANDARD GAS HEAT, 3 MODULE SCHEMATICA48-8668

68STANDARD GAS HEAT, 4 MODULE SCHEMATICA48-8669Typical wiring schematics (cont)

69STANDARD GAS HEAT, 5 MODULE SCHEMATICA48-8670

7Condenser Section• Novation® MCHX technology• High-efficiency option• Replaceable core filter drier option• R-410A refrigerantHeating Systems• Gas,

70LEGEND FOR TYPICAL CONTROL WIRING SCHEMATICSACCSY — AccessoryACC’Y — AccessoryAF — Air FoilAN — AnalogAO — Anaolog OutputBR — Blower RelayC—Compress

71Packaged Rooftop Cooling Unit with Gas Heat and ComfortLink ControlsHVAC Guide Specifications —Section 48N2,N3,N4,N5,N6,N7,N8,N9Size Range: 75 to 15

72contain a factory-installed nonferrous main con-densate drain connection.9. Top cover of airside section to be sloped to pre-vent standing water.10.

7310. On-board storage of unit manufacturer's cus-tomer user settings, retrievable from thekeypad.11. RS485 communications capability (accessoryc

74shall be provided when unit is equippedwith modulating gas heat option.6) Adaptive optimal start shall determinethe time unit will commence cooling

7521) Space Temperature Offset function shallpermit occupants to adjust space tem-perature set point by ±5° F using T-56space sensor (equipped with sl

76N. Electrical Requirements:All unit power wiring shall enter unit cabinet at a sin-gle location.O. Special Features:1. Digital Compressor:A digital

77respectively (ASTM D2247-92 and ASTMD870-92). Corrosion durability shall be con-firmed through testing to be no less than1000 hours salt spray per A

7817. Belt Guard:Unit shall be equipped with belt guard on allbelt-driven fans. The guard shall completelyenclose the drive system and be removable fo

79heating supply air temperature set point.Turndown ratio to be at least 7:1 for thesmallest low heat option, ranging up to18:1 for the high heat opti

848N2 DN6 0 Option CodeFactory Options48 – Cooling Unit with Gas Heat See note belowConfigurationN2 – Vertical Suppy/Return, CV/SAV ComfortLink Contro

80k. All factory wiring penetrating through thepanel is protected in 'RIGID' type metalconduit.32. Non-Fused Disconnect:A non-fused electric

81protect the unit if an abnormal condition isdetected.45. BACnet Communication Option:Shall provide factory-installed communicationcapability with a

82Packaged Rooftop Cooling Unit with ComfortLink Controls and Optional Electric or Hydronic HeatHVAC Guide Specifications —Section 50N2,N3,N4,N5,N6,N7

832. Factory rubber-in-shear mounted for vibrationisolation.3. Reverse rotation protection capability.4. Crankcase heaters shall only be activated dur

84G. Outdoor-Air Hood Assembly:Factory-installed motorized outdoor-air damper shallallow intake of up to 100% nominal airflow (on unitsnot equipped wi

857) Adaptive optimal stop shall turn off thecompressors a preset amount of timebefore the end of the occupied mode toconserve energy (CV only).8) Ale

8622) Lead-lag function shall distribute startsbetween the two refrigeration circuits inan effort to equalize the running time onthe two circuits.23)

87P. Electrical Requirements:All unit power wiring shall enter unit cabinet at a sin-gle location.Q. Special Features:1. Digital Compressor:A digital

88respectively (ASTM D2247-92 and ASTMD870-92). Corrosion durability shall be con-firmed through testing to be no less than1000 hours salt spray per A

8917. Belt Guard:Unit shall be equipped with belt guard on allbelt driven fans. The guard shall completelyenclose the drive system and be removable fo

950N2 DN6 0 Option CodeFactory Options50 – Cooling Only UnitSee note belowConfigurationN2 – Vertical Suppy/Return, CV/SAV ComfortLink ControlsDesign R

902) Full output heating on heating controlcommand.3) Tempering heat control, based on user-configured ventilation supply air temper-ature set point,

9132. Non-Fused Disconnect:A non-fused electrical disconnect for main unitpower shall be factory installed. The disconnectshall be an interlocking thr

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Pg 9