Carrier 50HCQA Instruction Manual

1Installation Instructions50HCQSingle Package RooftopHeat Pumpwith Puronr (R---410A) RefrigerantS i z e s 0 7 --- 0 9NOTE: Read the entire instruction

10DETAIL “A”PLACE ALL SEAL STRIP IN PLACEBEFORE PLACING UNIT ON ROOF CURB. DUCT ENDSEE DETAIL “A”“C”“B”“A”914-1371(36"-54")SPREADERBARSREQUI

11Step 8 — Install Outside Air HoodEconomizer Hood Removal and Setup --Factory Option —1. The hood is shipped in knock--down form and locatedin the re

12Economizer Hood and Two--Position Hood —NOTE: If the power exhaust accessory is to be installedon the unit, the hood shipped with the unit will not

13NOTE: Trap should be deep enough to offset maximum unit staticdifference. A 4” (102) trap is recommended.MINIMUM PITCH1” (25mm) PER10’ (3m) OF LIN

14Units with Factory--Installed Disconnect —The factory--installed option disconnect switch is locatedin a weatherproof enclosure located under the ma

15Mount the weatherproof cover to the backing plate asshown in Fig. 19. Remove two slot fillers in the bottom ofthe cover to permit service tool cords

16LOW VOLTAGECONDUITCONNECTORHIGH VOLTAGECONDUITCONNECTORC08637Fig. 21 -- Thru--Base Connection FittingsField--supplied and field--installed liquid--t

17RACEWAYHOLE IN END PANEL (HIDDEN)C08027Fig. 23 -- Field Control Wiring RacewayElectric Heaters50HCQ units may be equipped with field--installedacces

18TRACKFLANGEC08135Fig. 26 -- Typical Module InstallationSingle Point Boxes and Supplementary FusesWhen the unit MOCP device value exceeds 60--A,unit-

19PremierLinkt (Factory--Option)C08199Fig. 29 -- PremierLink ControllerThe PremierLink controller (see Fig. 29) is compatiblewith Carrier Comfort Netw

2Differential Enthalpy Control 31...Return Air Enthalpy Sensor 31...Indoor Air Quality (CO2sensor) 32...Outdoor A

20C10469Fig. 31 -- Typical PremierLink Wiring Schematic50HCQ

21Outdoor Air Temperature (OAT) Sensor —The OAT is factory--mounted in the EconoMi$er2 (FIOPor accessory). It is a nominal 10k ohm thermistor attached

22GJ4-12J4-10J4-8Y1Y22RR46J4-6J4-4W2C810C SPACETHERMOSTATPL CTBTHERMOSTATW1TB1 CTBTHERMOSTATC08119Fig. 36 -- Space Thermostat Conne

23Table 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

24If the 50HCQ unit has an economizer system andfree--cooling operation is required, a sensor representingReturn Air Temperature must also be connecte

258765432121HG24 VACOR24 VDCNCALARMRELAYCONTACTSCOMNO}0-10VDCSIG COM4-20mA++-+-J3 J4C08635Fig. 39 -- Indoor/Outdoor Air Quality (CO2)Sensor(33ZCSENCO2

26On 50HCQ units equipped with factory--installed SmokeDetector(s), the smoke detector controller implements theunit shutdown through its NC contact s

27signal pins must be wired to the signal ground pins.Wiring connections for CCN must be made at the 3--pinplug.At any baud (9600, 19200, 38400 baud),

28RTU--MP Control SystemThe RTU--MP controller, see Fig. 48, provides expandedstand--alone operation of the HVAC system plusconnection and control thr

29C10470Fig. 50 -- Typical RTU--MP System Control Wiring Diagram50HCQ

3Horizontal Connections / EconomizerVertical Connections / EconomizerC10464Fig. 1 -- Unit Dimensional Drawing: 07 — 08 Size Units50HCQ

30Table 8 – RTU--MP Controller Inputs and OutputsPOINT NAMEBACnet OBJECTNAMETYPE OF I/OCONNECTION PINNUMBERSINPUTSSpace Temperature Sensor sptsens AI

31Field ConnectionsField connections for accessory sensors and input devicesare made the RTU--MP, at plugs J1, J2, J4, J5, J11 and J20.All field contr

32To 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

33Input 8 or 9 is recommended for easy of installation. Referto Fig. 48 and Fig. 50 for wire terminations at J5.Remote Occupancy: The remote occupancy

34Local Access —BACview6Handheld: The BACview6is a keypad/displayinterface used to connect to the RTU--MP to access thecontrol information, read senso

35Table 9 – LEDsThe LEDs on the RTU--MP show the status of certain functionsIf this LED is on... Status is...Power The RTU MP has powerRx The RTU MP i

36Duct smoke sensorcontrollerFastener(2X)Controller coverConduit nuts(supplied by installer)Conduit support plateCover gasket(ordering option)Conduit

37location and the tubing to the sampling tube be connected.See “Completing Installation of Return Air SmokeSensor:” for details.)Return Air Detector

38Table 10 – Unit Wire/Fuse or HACR Breaker Sizing DataUNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . NO C.O. or UNPWR C.O.CRHEATER***Nom(kW)FLA

39Table 10 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . w/ PWRD C.O.CRHEATER***Nom(kW)FLA F

4C10465Fig. 1 -- Unit Dimensional Drawing: 07 — 08 Size Unit (cont.)50HCQ

40Table 10 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . NO C.O. or UNPWR C.O.CRHEATER***Nom

41Table 10 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . w/ PWRD C.O.CRHEATER***Nom(kW)FLA F

42Table 10 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . NO C.O. or UNPWR C.O.CRHEATER***Nom

43Table 10 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)UNITNO M . V --- P h --- H ZIFM TYPEELEC. HTR P. E . w/ PWRD C.O.CRHEATER***Nom(kW)FLAFL

44Legend and Notes for Table 10LEGEND:BRKR --- Circuit breakerCO --- Convenient outletDD --- Direct driveindoor fan motorDISC --- DisconnectFLA --- Fu

45Step 12 — Install AccessoriesAvailable accessories include:Roof CurbThru--base connection kit (must be installed before unitis set on curb)Manual ou

4650HCQ

4750HCQ

48Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 04/ 10Manufacturer reserves the right to

5Horizontal Connections / EconomizerVertical Connections / EconomizerC10460Fig. 2 -- Unit Dimensional Drawing: 09 Size Units50HCQ

6C10461Fig. 2 -- Unit Dimensional Drawing: 09 Size Unit (cont.)INSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult

7Roof Mount —Check building codes for weight distributionrequirements. Unit operating weight is shown in Table 1.Step 2 — Plan for Sequence of Unit In

8UNIT SIZE50HCQ*07-09C10462Fig. 4 -- Roof Curb Details: Size 07 — 09 Units50HCQ

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