Carrier PACKAGE ROOFTOP 48HC Instruction Manual

48HCSingle Package RooftopGas Heating/Electric Cooling Unitwith Puronr (R---410A) RefrigerantSizes: 04, 05, 06Installation InstructionsNOTE: Read the

10PositioningonCurb—Position unit on roof curb so that the following clearancesare maintained:1/4in. (6.4 mm) clearance between theroof curb and the b

11Hood PartsPlastic Tie WrapQty (2)Screws for Metal TrayQty (2)C08639Fig. 9 -- Economizer and Two--Position DamperHood Parts Location4. Carefully lift

12C12101Fig. 13 -- Compressor Door Latch LocationStep 10 — Install Flue HoodFlue hood is shipped screwed to the basepan beside theburner compartment a

13LEGEND* Field supplied.NOTE: Follow all local codes.NFGC – National Fuel Gas CodeSTEEL PIPENOMINAL DIAMETER(in.)SPACINGOFSUPPORTSX DIMENSION(ft)1/23

14DripLegShut OffValveUnionThru-Curb AdapterBurnerAccessPanel9” (229mm) min Unit Base RailC07470Fig. 19 -- Gas PipingC08018Fig. 20 -- Gas Piping Thru-

15Step 12 — Install External Condensate Trapand LineThe unit has one3/4-in. condensate drain connection onthe end of the condensate pan and an alterna

16C11 23Disconnectper NEC208/230-1-60orDisconnectper NEC11 13 13 23L1 L2 L3TBC IFCDirect Drive IFM208/230-3-60460-3-60575-3-60Units Without Single Poi

17C12280Fig. 28 -- Location of HACR EnclosureTo field install the HACR shaft and handle:1. Remove the unit front panel (see Fig. 2).2. Remove (3) hex

18Convenience Outlets —ELECTRICAL OPERATION HAZARDFailure to follow this warning could result in personalinjury or death.Units with convenience outlet

19C08283UNITVOLTAGECONNECTASPRIMARYCONNECTIONSTRANSFORMERTERMINALS208,230240L1: RED +YELL2: BLU + GRAH1 + H3H2 + H4460 480L1: REDSplice BLU + YELL2: G

2Outdoor Air Temperature (OAT) Sensor 41...EconoMi$er2 41...Field Connections 42...Space Temperat

20Units without Thru--Base Connections —1. Install power wiring conduit through side panel open-ings. Install conduit between disconnect and controlbo

21Humidi--MiZerRControl ConnectionsHumidi--MiZer – Space RH Controller —NOTE: The Humidi--MiZer is a factory installed optionwhich is only available f

22HUMIDISTATC101272Fig. 39 -- Typical Humidi--MiZerRAdaptive Dehumidification System Humidistat WiringRcRhW1GY2CO/W2/BY1OATRRSSRTNHUMD1D2V+VgX*CGW2W1Y

23Low Ambient Control (Factory Option)If the unit comes with Electro--Mechanical (EM) control,then no adjustment is necessary.If the unit comes with P

24C12251Fig. 42 -- ComfortLink Control Wiring Diagram (48HC 3--5 Ton Units)48HC

25C12252Fig. 43 -- 48HC ComfortLink with Humidi--MiZer — Power Wiring Diagram, 208/230V -- 1 Ph -- 60 Hz48HC

26C12253Fig. 44 -- 48HC ComfortLink with Humidi--MiZer — Power Wiring Diagram, 208/230V, 460V -- 3Ph -- 60 Hz48HC

27C12254Fig. 45 -- 48HC ComfortLink with Humidi--MiZer — Power Wiring Diagram, 575V --3 Ph -- 60 Hz48HC

28PremierLinkt (Factory--Option)C08199Fig. 46 -- PremierLink ControllerThe PremierLink controller (see Fig. 46) is compatiblewith Carrier Comfort Netw

29C101145Fig. 48 -- PremierLink Wiring Schematic48HC

348HCEA04A2A6A0A3B0Cooling Tons04 - 3 ton05 - 4 ton06 - 5 ton1Example:Position: 2 3 4 5 6 7 8 91011 12 13 14 15 161718Heat OptionsD = Low Gas Hea

30C101146Fig. 49 -- PremierLink Wiring Schematic with Humidi--MiZerR48HC

31Supply Air Temperature (SAT) Sensor —On FIOP--equipped 48HC unit, the unit is supplied with asupply--air temperature (SAT) sensor (33ZCSENSAT).This

32Table 4 – Space Sensor ModeTB1 TERMINAL FIELD CONNECTION INPUT SIGNAL1 T 5 5 --- S E N / T 5 6 --- S E N Analog (10k thermistor)2 RMTOCC Discrete, 2

33Space Sensors —The PremierLink controller is factory--shipped configuredfor Space Sensor Mode. A Carrier T--55 or T--56 spacesensor must be used. T-

34Economizer ControlsIndoor Air Quality (CO2)Sensor—The indoor air quality sensor accessory monitors spacecarbon dioxide (CO2) levels. This informatio

35Space Relative Humidity Sensor or HumidistatConnections —NOTE: The accessory space relative humidity sensor andhumidistat are not available for sing

36Filter Status Switch —This function is available only when PremierLink isconfigured for (Space) Sensor Mode.PremierLink control can monitor return f

37Communications Bus Wire Specifications: The CCNCommunication Bus wiring is field--supplied andfield--installed. It consists of shielded 3--conductor

38RTU Open Control SystemThe RTU Open control is factory--mounted in the 48HCunit’s main control box, to the left of the CTB. SeeFig. 68. Factory wiri

39C101147Fig. 69 -- RTU Open System Control Wiring Diagram48HC

4Horizontal Connections / EconomizerVertical Connections / EconomizerC12227Fig. 2 -- Unit Dimensional Drawing48HC

40C101148Fig. 70 -- RTU Open System Control Wiring Diagram with Humidi--MiZerR48HC

41Table 8 – RTU Open Controller Inputs and OutputsPOINT NAMEBACnet OBJECTNAMETYPE OF I/OCONNECTION PINNUMBER(S)DEDICATED INPUTSSpace Temp / Zone Temp

42Field ConnectionsField connections for accessory sensors and input devicesare made the RTU Open, at plugs J1, J2, J4, J5, J11 andJ20. All field cont

43Do not mount the IAQ sensor in drafty areas such as nearsupply ducts, open windows, fans, or over heat sources.Allow at least 3 ft (0.9 m) between t

44Relative Humidity Sensor(Polarized Male Connector)J4-1 or J4-4 + 24 VDC Supply VoltageJ4-2 or J4-5 (-) 4 to 20 mA Current Loop Outputto RTU-OPEN4-20

45Communication Wiring -- ProtocolsGeneral —Protocols are the communication languages spoken bycontrol devices. The main purpose of a protocol is toco

46Local AccessBACview6Handheld: The BACview6is a keypad/displayinterface used to connect to the RTU Open to access thecontrol information, read sensor

47Table 9 – LEDsThe LEDs on the RTU Open show the status of certain functionsIf this LED is on... Status is...Power RTU Open has powerRx RTU Open is r

48To wire the return air enthalpy sensor, perform thefollowing:1. Use a 2--conductor, 18 or 20 AWG, twisted pair cableto connect the return air enthal

49Table10–UnitWire/FuseorHACRBreakerSizingData.UNITNOM.V --- P h --- H zIFM TYPENO C.O. or UNPWR C.O. w/ PWRD C.O.NO P.E. w/ P.E. (pwrd fr/ unit) NO P

5C12248Fig. 2 -- Unit Dimensional Drawing (cont.)CBADC08337LOCATION DIMENSION CONDITIONA48---in (1219 mm)18---in (457 mm)18---in (457) mm12---in (305

50Table 10 Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNOM.V --- P h --- H zIFM TYPENO C.O. or UNPWR C.O. w/ PWRD C.O.NO P.E. w/ P.E. (pwrd f

51Table 11 – Unit Wire Sizing Data with Factory--Installed HACR BreakerUNITNOM.V --- P h --- H zIFM TYPENO C.O. or UNPWR C.O. w/ PWRD C.O.NO P.E. w/ P

52Table 11 -- Unit Wire Sizing Data with Factory--Installed HACR Breaker (cont)UNITNOM.V --- P h --- H zIFM TYPENO C.O. or UNPWR C.O. w/ PWRD C.O.NO P

5353Legend and Notes for Tables 10 and 11LEGEND:BD --- Belt driveindoor fan motorBRKR --- Circuit breakerCO --- Convenient outletDD --- Direct drivein

54C09302Fig. 86 -- EconoMi$er IV WiringStep 14 — Adjust Factory--Installed OptionsSmoke Detectors —Smoke detector(s) will be connected at the Controls

55START-UP CHECKLIST(Remove and Store in Job File)I. PRELIMINARY INFORMATIONMODEL NO.: SERIAL NO.:DATE: TECHNICIAN:II. PRE-START-UP (insert checkmark

56j VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION.j VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRE

6INSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult local building codes and the NEC (NationalElectrical Code) ANS

7Step 2 — Plan for Sequence of Unit InstallationThe support method used for this unit will dictate differentsequences for the steps of unit installati

8CONNECTORPKG. ACCY.BCD ALTDRAINHOLEGAS POWER CONTROLACCESSORYPOWERCRBTMPWR001A011’-911/16”[551]13/4”[44.5]1’-4”[406]3/4” [19]NPTCRBTMPWR003A013/4”

9A-B0.5” (13)B-C1.0” (25)A-C1.0” (25)MAXIMUM ALLOWABLEDIFFERENCE IN. (MM)C06110Fig. 5 -- Unit Leveling TolerancesStep 5 — Field Fabricate DuctworkCabi