Carrier 50HJQ016 Specifications

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

10Step 7 — Make Outdoor-Air Inlet AdjustmentsMANUAL OUTDOOR-AIR DAMPER — All units (exceptthose equipped with a factory-installed economizer) have ama

11Install Motormaster I Controls— Only one Motormaster Icontrol is required per unit. The Motormaster I control must beused in conjunction with the Ac

12Step 10 — Adjust Factory-Installed OptionsPREMIERLINK™ CONTROL — The PremierLink control-ler is available as a special order from the factory and is

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14Table 4 — PremierLink™ Sensor Usage*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature sensor HH79NZ0

15Fig. 24 — Typical Wiring Schematic — Carrier Rooftop Unit with PremierLink™ Controls*Used with Differential Enthalpy Control only.Fig. 23 — Enthalpy

16DIFFERENTIAL ENTHALPY CONTROL (Fig. 25) —Differential enthalpy control requires both an enthalpy switch/receiver (33CSENTHSW) and an enthalpy sensor

1724 VAC OUTPUT FROM N/C CONTACT WHEN THEOUTDOOR ENTHALPY IS LESS THAN THEINDOOR ENTHALPY(ENABLE ECONOMIZER)24 VAC OUTPUT FROM N/O CONTACT WHEN THEIND

18OPTIONAL ECONOMI$ERIV AND ECONOMI$ER2 —See Fig. 28 and 29 for EconoMi$erIV component locations.See Fig. 30 for EconoMi$er2 component locations.NOTE:

19435286711011912PINKBLACKBLUENOTE 1 NOTE 2 RUN500 OHMRESISTOR50HJ540573ACTUATORASSEMBLYREDWHITEECONOMISER2 PLUGDIRECT DRIVEACTUATOROATLEGENDOAT — Out

2PKG. NO. REF.CURBHEIGHTDESCRIPTIONCRRFCURB010A00 1′-2″ (305) Standard Curb 14″ HighCRRFCURB011A00 2′-0″ (610)Standard Curb for UnitsRequiring High In

20Low Temperature Compressor Lockout Switch—TheEconoMi$erIV is equipped with an ambient temperature lock-out switch located in the outdoor airstream w

21Outdoor Enthalpy Changeover— For enthalpy control, ac-cessory enthalpy sensor (part number HH57AC078) isrequired. Replace the standard outdoor dry b

22Minimum Position Control— There is a minimum damperposition potentiometer on the EconoMi$erIV controller. SeeFig. 33. The minimum damper position ma

23level increases even though the CO2set point has not beenreached. By the time the CO2level reaches the set point, thedamper will be at maximum venti

24Step 11 — Set Defrost Cycle — The defrost timer isfactory set at 30 minutes. The timer may be field-adjusted to50 or 90 minutes by moving the wire f

25Table 11A — Fan Performance Data, 50HJQ014; 208/230, 460 V Units LEGENDNOTES:1. Boldface indicates field-supplied drive require

26Table 11B — Fan Performance Data, 50HJQ014; 575 V Units LEGENDNOTES:1. Boldface indicates field-supplied drive required.2. ind

27Table 12 — Fan Performance Data, 50HJQ016 Units LEGENDNOTES:1. Boldface indicates field-supplied drive required.2. indicates f

28Table 14 — Fan Rpm at Motor Pulley Settings* (Factory-Supplied Drives)*Approximate fan rpm shown.†Due to belt and pulley size, pulley cannot be set

29Operating SequenceCOOLING, UNITS WITHOUT ECONOMIZER — Whenthermostat calls for cooling, terminals G and Y1 are energized.The indoor-fan contactor (I

3POSITIONING — Provide clearance around and above unitfor airflow, safety, and service access (Fig. 4 and 5).Do not install unit in an indoor location

30If field-installed accessory CO2sensors are connected to thePremierLink™ control, a PID-controlled demand ventilationstrategy will begin to operate.

31Staging should be as follows:If Heating PID STAGES=2• HEAT STAGES=1 (75% capacity) will energize HS1• HEAT STAGES=2 (100% capacity) will energize HS

32To align fan and motor pulleys:1. Loosen fan pulley setscrews.2. Slide fan pulley along fan shaft.3. Make angular alignment by loosening motor fromm

334. Using jacking bolt under motor base, raise motor to top ofslide and remove belt. Secure motor in this position bytightening the nuts on the carri

34TO USE COOLING CHARGING CHART — Take outdoorambient temperature and read the suction pressure gage. Referto appropriate chart to determine correct s

35Fig. 51 — Typical Wiring Diagram (50HJQ016, 208/230-3-60 V Shown)

36Fig. 52 — Typical Component Arrangement (50HJQ016, 208/230-3-60 V Shown)

37HTR — HeaterIAQ — Indoor Air Quality SensorIFC — Indoor Fan ContactorIFCB — Indoor Fan Circuit BreakerIFM — Indoor Fan MotorIP — Internal ProtectorL

38TROUBLESHOOTINGUnit Troubleshooting —Refer to Tables 18 and 19,Fig. 53-55 for assistance when troubleshooting the 50HJQunits.EconoMi$erIV Troublesho

39Table 18 — Check Valve FunctionsTable 19 — EconoMi$erIV Input/Output Logic*For single enthalpy control, the module compares outdoorenthalpy to the A

4Table 1 — Physical Data LEGEND*Indoor coil fin material/outdoor coil fin material.†Weight of 14 in. roof curb.**Pulley cannot be run at 0 or

40→ — Refrigerant Flow Direction∆ — Check Valve Flow DirectionX—Fixed OrificeCHECKVALVE*COOLING HEATINGABCDEFClosedOpenClosedOpenClosedOpenOpenClosedO

41Fig. 54 — Troubleshooting Chart, Heating CycleODT — Outdoor Temperature

42Fig. 55 — Troubleshooting Chart, Cooling Cycle

43Fig. 56 — EconoMi$erIV Functional View

44INDEXAir quantity limits 24Carrier Comfort Network 12Changeover set points 20Charging chart, refrigerant 33Clearance 5, 6CO2sensorConfiguration 23Se

45SERVICE TRAININGPackaged Service Training programs are an excellent way to increase your knowledge of the equipmentdiscussed in this manual, includi

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

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

5Fig. 4 — Base Unit Dimensions — 50HJQ014NOTES:1. Refer to print for roof curb accessory dimensions.2. Dimensions in ( ) are in millimeters.3. Cente

6Fig. 5 — Base Unit Dimensions — 50HJQ016NOTES:1. Refer to print for roof curb accessory dimensions.2. Dimensions in ( ) are in millimeters.3. Cente

7Step 4 — Make Unit Duct Connections — Unit isshipped for through-the-bottom duct connections. Ductworkopenings are shown in Fig. 6. Field-fabricated

8Table 2 — Electrical Data LEGEND*Heater capacity (kW) is based on heater voltage of 208 v, 240 v,480 v, and 600 v.

9FIELD CONTROL WIRING — Install a Carrier-approvedaccessory thermostat assembly according to the installationinstructions included with the accessory.