Carrier 48TFD008-014 User Manual

Copyright 2001 Carrier Corporation Form 48TF-2PDStandard-Efficiency Rooftop Units with:• Exclusive integrated gas control board with diagnostics• Alum

10 LEGEND*Evaporator coil fin material/condenser coil fin material. Contact your local repre-sentative for details about coated fins.†Weig

11*Factory-installed.†Field-installed.NOTE: Refer to 48TF price pages or contact your local representative for accessory/and option package informatio

12WIRING HARNESSOUTDOOR AIRBLOCK-OFF PLATECONTROLLERLIQUID PROPANE (LP) CONVERSION KITS004-007 SHOWNThe LP conversion kit allows the unit to utilize a

13FACTORY-INSTALLED APOLLOCOMMUNICATING CONTROLSThe Apollo direct digital controls are designed exclusively by Carrier,and are used to actively monito

14Base unit dimensions — 48TF004-007UNIT48TFSTANDARDUNITWEIGHTDURABLADEECONOMIZERWEIGHTECONOMI$ERWEIGHTCORNERWEIGHT(A)CORNERWEIGHT(B)CORNERWEIGHT(C)CO

15Base unit dimensions — 48TF008-014UNIT48TJSTANDARDUNITWEIGHTDURABLADEECONOMIZERWEIGHTECONOMI$ERWEIGHTCORNERWEIGHT(A)CORNERWEIGHT(B)CORNERWEIGHT(C)CO

16Accessory dimensions — 48TF004-007TO ENSURE AIRTIGHT CONNECTION.PLACE UNIT AS CLOSE TO THISEND AS POSSIBLETO ENSURE AIRTIGHT CONNECTION.PLACE UNIT A

17Accessory dimensions — 48TF008-014TO ENSURE AN AIRTIGHT CONNECTION,PLACE UNIT ON CURB AS CLOSE TODUCT END AS POSSIBLE.TO ENSURE AN AIRTIGHT CONNECTI

18I Determine cooling and heating loads at designconditions.Given:Required Cooling Capacity (TC) . . . . . .67,000 BtuhSensible Heat Capacity (SHC). .

19VII Select net heating capacity of unit to meetdesign condition requirements.Enter the Heating Capacities and Efficiencies ratingtable. The 48TFD006

2error code is issued. This feature great-ly improves reliability of the rooftop unit.The IGC also contains burner con-trol logic for accurate and dep

20COOLING CAPACITIESStandard RatingsLEGENDNOTES:1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be used: Whe

21COOLING CAPACITIES (cont)Standard RatingsLEGENDNOTES:1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be use

22COOLING CAPACITIES (cont)Standard RatingsLEGENDNOTES:1. Direct interpolation is permissible. Do not extrapolate.2. The following formulas may be use

23FAN PERFORMANCE — VERTICAL DISCHARGE UNITS LEGENDNOTES:1. Values include losses for filters, unit casing, and wet coils. Se

24FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1075 to 1455 rpm. All other rpms require a f

25FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 835 to 1185 rpm. All other rpms require

26FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGENDNOTES:1. Values include losses for filters, unit casing, and wet co

27FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1300 to 1685 rpm. All other rpms require a fiel

28FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1070 to 1460 rpm. All other rpms require a fiel

29FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1300 to 1685 rpm. All other rpms require a fi

3The units can be easily converted from a vertical to a horizontal duct con-figuration by relocating the panels sup-plied with the unit.The non-corros

30FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Standard drive range is 590 to 840 rpm. Alternate drive range is 685

31FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 860 to 1080 rpm. All other rpms require a field-

32FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 685 to 935 rpm. All other rpms require a field-s

33FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 860 to 1080 rpm. All other rpms require a field-s

34FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Standard drive range is 685 to 935 rpm. Alternate motor drive range is

35FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*High-static motor drive range is 830 to 1130 rpm. All other rpmsrequir

36FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEND*Standard drive range is 860 to 1080 rpm. Alternate motor drive rangeis 9

37FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS LEGENDNOTES:1. Values include losses for filters, unit casing, and wet coils. Se

38FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-

39FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGENDNOTES:1. Values include losses for filters, unit casing, and wet co

4Energy$Recycler — the IAQ solution for today’s “tight” buildingsIndoor-air quality (IAQ) generally refers to the level of pollutants inside a build-i

40FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1075 to 1455 rpm. All other rpms require a field-

41FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 900 to 1300 rpm. All other rpms require a field-

42FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1300 to 1685 rpm. All other rpms require a field

43FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1070 to 1460 rpm. All other rpms require a field

44FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 1300 to 1685 rpm. All other rpms require a field

45FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Standard drive range is 590 to 840 rpm. Alternate drive range is 685

46FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 860 to 1080 rpm. All other rpms require a field-

47FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 685 to 935 rpm. All other rpms require a

48FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Motor drive range is 860 to 1080 rpm. All other rpms require a field

49FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Standard motor drive range is 695 to 935 rpm. Alternate motor driv

5ARI* capacity ratings See Legend and Notes on page 6.UNIT 48TFNOMINALTONSSTANDARDCFMNET COOLINGCAPACITY(Btuh)TOTALkWSEER† SOUNDRATING(Bels)Belt Drive

50FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*High-static motor drive range is 830 to 1130 rpm. All other rpmsre

51FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND*Standard motor drive range is 860 to 1080 rpm. Alternate moto

52AIR QUANTITY LIMITSSOUND POWER (Total Unit)ACCESSORY/FIOP STATIC PRESSURE* (in.wg) — 48TF004-007 LEGEND*The static pressure must be

53FAN RPM AT MOTOR PULLEY SETTINGS**Approximate fan rpm shown.†Indicates alternate motor and drive package.**Indicates high-static motor and drive pac

54Performance data (cont)FLOW (cfm)00.10.20.30.40.5STATIC PRESSURE (in. wg)2 FANSOPERATING1 FANOPERATING2500200015001000500050004000300020001000000.10

555040302010 000.250.50.75 1FLOW (CFM)STATIC PRESSURE (in. wg)3 TO 6 TON7 1/2 TO 12 1/2 TON0.250.200.150.100.050.001200200028003600 4400FLOW (CFM)STA

56EVAPORATOR-FAN MOTOR EFFICIENCYNOTE: All indoor-fan motors 5 hp and larger meet the minimum efficiency requirements asestablished by the Energy Poli

57ELECTRICAL DATA (Without Convenience Outlet)See Legend and Notes on page 58.UNIT48TFNOMINALVOLTAGEIFMTYPEVOLTAGERANGECOMPR(ea)OFM(ea)IFMCOMBUSTIONFA

58ELECTRICAL DATA (Without Convenience Outlet) (cont) LEGEND*Used to determine minimum disconnect per NEC.†Fuse or HACR ci

59ELECTRICAL DATA (With Convenience Outlet)See Legend and Notes on page 60.UNIT48TFNOMINALVOLTAGEIFMTYPEVOLTAGERANGECOMPR(ea)OFM(ea)IFMCOMBUSTIONFAN M

6 LEGEND*Air Conditioning and Refrigeration Institute.†Applies only to units with capacity of 65,000 Btuh or less.**The IP

60ELECTRICAL DATA (With Convenience Outlet) (cont) LEGEND*Used to determine minimum disconnect per NEC.†Fuse or HACR circu

61Typical piping and wiringNO.2NO.1VERTICAL DISCHARGE DUCTINGHORIZONTAL DISCHARGE DUCTINGNEC — National Electrical Code

62Operating sequenceCooling, units without economizer — When thermo-stat calls for cooling, terminals G and Y1 are energized.The indoor (evaporator) f

63When the OAT is below the MECH CLG LOCKOUT setpoint, the compressors remain off.Heating, units with economizer — When the thermo-stat calls for heat

64Controls (cont)GROUNDTRAN24 VAC20 VA(FIELDSUPPLIED)24 VH G 24 VACOR+ - 24 VDC2 18 7 6 5 4 3 2 1++-2-10VDCSIG COM (J5-3)4-20mA (J5-2)NCCOMNOALARMR

65TEMP SystemsA TEMP System is a network of communicating CarrierTEMP System thermostats and rooftop, factory-mountedApollo direct digital controls, e

66PremierLink™ Direct Digital controls — The Premier-Link Direct Digital Controls (DDC) requires the use of aCarrier electronic thermostat or a CCN co

67WarmCoolWarmCoolWarmCoolCarrierCOMFORTNETWORKMODEL 485SD9RRS-232 TO RS- 485RS-485RS-232T-58DIGITALDISPLAYSENSORT-58DIGITALDISPLAYSENSORT-58DIGITALDI

68Typical LEN (Local Equipment Network) modeAllows unit software access with Navigator™ or ScrollingMarquee accessories. Both have unit diagnosis andc

69CarrierCOMFORTNETWORKMODEL 485SD9RRS-232 TO RS- 485RS-485RS-232WarmCoolWarmCoolWarmCoolWarmCoolRS232, RS485 ADAPTORPCORTEMPORARY OR PERMANENT ACCESS

7 LEGEND*Evaporator coil fin material/condenser coil fin material. Contact your local repre-sentative for details about coated fins

70Controls (cont)CarrierCOMFORTNETWORKMODEL 485SD9RRS-232 TO RS- 485RS-485RS-232WarmCoolWarmCoolWarmCoolRS232, RS485 ADAPTORPCT-56SENSORT-56SENSORT-56

71Ductwork — Secure vertical discharge ductwork to roofcurb. For horizontal discharge applications, attach duct-work to unit, or field-supplied flange

72Typical wiring schematic

73LEGEND FOR TYPICAL WIRING SCHEMATICAHA —Adjustable Heat AnticipatorC —Contactor, CompressorCAP —CapacitorCB —Circuit BreakerCC —Cooling CompensatorC

74Typical wiring schematic (cont)OUTDOORAIRSENSORTEMPTEMPCOMOUTPWRBROWNVIOLETWHITEREDBROWNTEMPTEMPCOMOUTPWRRETURNAIRSENSORVIOLETWHITEREDOATCOMOAH+15 V

75Packaged Rooftop Electric CoolingUnit with Gas Heat — Constant VolumeApplicationHVAC Guide SpecificationsSize Range: 3 to 121/2 Tons, Nominal (Cooli

76E. Coils:1. Evaporator and condenser coils shall have alu-minum plate fins mechanically bonded to cop-per tubes with all joints brazed.2. Tube sheet

77c. Shall be compatible with ComfortLink™controllers.d. Shall be ASHRAE 62-99 compliant.e. Shall accept a CO2 sensor in the conditionedspace — Demand

78* 14. Condenser Coil Hail Guard Assembly:Hail guard shall protect against damage fromhail and flying debris.15. Unit-Mounted, Non-Fused Disconnect S

8 LEGEND*Evaporator coil fin material/condenser coil fin material. Contact your local repre-sentative for details about coated fins.†Weigh

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

9 LEGEND*Evaporator coil fin material/condenser coil fin material. Contact your local repre-sentative for details about coated fins.†Weigh