Carrier 50HE003-006 Installation Instructions Manual
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Carrier 50HE003-006 Installation Instructions Manual

Carrier 50HE003-006 Installation Instructions Manual

Single-package rooftop electric cooling units with optional electric heat
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50HJ004---007
50HE003---006
Single---Package Rooftop Electric Cooling
Units with Optional Electric Heat

TABLE OF CONTENTS

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Installation Instructions
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SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
1
Only trained and qualified service personnel should install, repair,
1
or service air-conditioning equipment.
2
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
2
should be performed by trained service personnel. When working
2
on air-conditioning equipment, observe precautions in the
2
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
2
Follow all safety codes. Wear safety glasses and work gloves. Use
2
quenching cloth for unbrazing operations. Have fire extinguishers
4
available for all brazing operations.
4
Recognize safety information. This is the safety- -alert symbol
8
.
When you see this symbol on the furnace and in
instructions or manuals, be alert to the potential for personal
8
injury.
8
Understand the signal words DANGER, WARNING, and
8
CAUTION. These words are used with the safety- -alert symbol.
DANGER identifies the most serious hazards which will result in
29
severe personal injury or death. WARNING signifies a hazard
29
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
29
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced installation,
29
reliability,or operation.
29
!
29
29
ELECTRICAL SHOCK HAZARD
31
Failure to follow this warning could cause personal
injury or death.
34
Before performing service or maintenance operations
35
on unit, turn off main power switch to unit and install
36
lockout tag. Ensure electrical service to rooftop unit
agrees with voltage and amperage listed on the unit
41
rating plate.
58
58
62
Unit is shipped in the vertical discharge configuration. To convert
67
to horizontal discharge application, remove duct opening covers.
72
Using the same screws, install covers on duct openings in
basepan of unit with insulation-side down. Seals around
openings must be tight. (See Fig. 1.)
1
WARNING

INSTALLATION

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Summary of Contents for Carrier 50HE003-006

  • Page 1: Table Of Contents

    50HJ004---007 50HE003---006 Single---Package Rooftop Electric Cooling Units with Optional Electric Heat Installation Instructions TABLE OF CONTENTS SAFETY CONSIDERATIONS ......INSTALLATION .

  • Page 2: Step 1 -Provide Unit Support

    Step 1 —Provide Unit Support Roof Curb Assemble and install accessory roof curb in accordance with instructions shipped with curb. (See Fig. 2.) Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb, not to the unit. If electric control power or gas service is to be routed through the basepan, attach the accessory thru-the-bottom service connections to the basepan in accordance...
  • Page 3 Fig. 2 --- Roof Curb Details ROOF CURB UNIT ACCESSORY SIZE 1 -2 CRRFCURB001A01 50HJ004-007 [356] 50HE003-006 2 -0 CRRFCURB002A01 [610] NOTES: 1. Roof curb accessory is shipped disassembled. 2. Insulated panels. 3. Dimensions in [ ] are in millimeters.

  • Page 4: Step 4 -Rig And Place Unit

    Step 4 —Rig and Place Unit Inspect unit for transportation damage, and file any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit, and rollers may be used to move unit across a roof. Level by using unit frame as a reference.
  • Page 5 NOTES: 1. Place unit on curb as close as possible to the duct end. 2. Dimension in ( ) is in millimeters. 3. Hook rigging shackles through holes in base rail as shown in detail "A." Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

  • Page 8: Step 5 -Make Electrical Connections

    3 and 4, Note 2, to determine the percentage of voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation invalidates any applicable Carrier warranty. NOTE: If accessory thru-the-bottom connections and roof curb are used, refer to the Thru-the-Bottom Accessory Installation Instructions for information on wiring the unit.
  • Page 9 BASE UNIT 50HJ NOMINAL CAPACITY OPERATING WEIGHT (lb) Unit Humidi-MiZer™ Adaptive Dehumidification System EconoMi$er IV Roof Curb COMPRESSOR Quantity Oil (oz) REFRIGERANT TYPE Expansion Device Operating Charge (lb-oz) Standard Unit Unit With Humidi-Mizer Adaptive Dehumidification System CONDENSER FAN Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total)
  • Page 10 BASE UNIT 50HE NOMINAL CAPACITY OPERATING WEIGHT (lb) Unit Humidi-MiZer™ Adaptive Dehumidification System EconoMi$er IV Roof Curb COMPRESSOR Quantity Oil (oz) REFRIGERANT TYPE Expansion Device Operating Charge (lb-oz) Standard Unit Unit With Humidi-Mizer Adaptive Dehumidification System CONDENSER FAN Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total)
  • Page 11 208/230-1-60 575-3-60 (SIZES 006 AND 007) 208/230-3-60 (SIZES 004 AND 005) LEGEND — Contactor COMP — Compressor — Indoor (Evaporator) Fan Contactor — National Electrical Code — Terminal Block LOW VOLTAGE INTEGRATED GAS UNIT CONNECTIONS CONTROLLER (IGC) Fig. 13 --- Field Control Wiring Raceway 208/230-3-60 460-3-60 (SIZES 006 AND 007)

  • Page 29: Step 6 -Adjust Factory-Installed Options

    Humidi- -Mizer™ Adaptive Dehumidification System Humidi- -MiZer system operation can be controlled by field installation of a Carrier- -approved humidistat. (See Fig. 14.) NOTE: A light commercial Thermidistat™ device (Fig. 15) can be used instead of the humidistat if desired. The Thermidistat device includes a thermostat and a humidistat.
  • Page 30 LEGEND — Circuit Breaker — Cooling Relay — Dehumidify Relay — Discharge Solenoid Valve — Heater Relay — Low Pressure Switch — Liquid Solenoid Valve — Low Temperature Lockout LTLO Field Splice Fig. 16 --- Typical Humidi- -MiZert Adaptive Dehumidification System DEHUM TS TAT WIRES LEGEND...

  • Page 31: Premierlink™ Control

    PremierLink controller. The PremierLink controller (see Fig. 22 and 23) requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied). No sensors are supplied with the field- -mounted PremierLink control.
  • Page 32 OUTDOOR AIR APPLICATION TEMPERATURE SENSOR Dry Bulb Temperature with Included --- PremierLink* (PremierLink CRTEMPSN001A00 requires 4-20 mA Actuator) Differential Dry Bulb Temperature with Included --- PremierLink* (PremierLink CRTEMPSN001A00 requires 4-20 mA Actuator) Single Enthalpy with PremierLink* Included --- (PremierLink Not Used requires 4-20 mA Actuator) Differential Enthalpy...
  • Page 33 PREMIERLINK CONTROL HINGED DOOR PANEL Space Temp./ Set Point Adjustment Indoor Air Quality Sensor Outdoor Air Quality Sensor Power Exhaust/Energy Recycler RMTOCC CMPSAFE GRAY GRAY OUTDOOR AIR ENTHALPY SENSOR Comm. Economi$er2 4 - 20mA RETURN AIR ENTHALPY SENSOR Fig. 23 --- PremierLinktController (Installed) TB - 2 TB - 3 LEGEND...

  • Page 34: Mounting Plate

    Connect the GRAY/RED wire to J4-1 on PremierLink controller and to terminal (2) on enthalpy sensor. NOTE: If installing in a Carrier rooftop, use the two gray wires provided from the control section to the economizer to connect PremierLink controller to terminals 2 and 3 on enthalpy sensor.

  • Page 35: Economi$Er Iv Standard Sensors

    NOTE: These instructions are for installing the optional EconoMi$er IV and EconoMi$er2 only. Refer to the accessory EconoMi$er IV or EconoMi$er2 installation instructions when field installing an EconoMi$er IV or EconoMi$er2 accessory. 1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward.

  • Page 36: Economi$Er Iv Control Modes

    Supply Air Temperature (SAT) Sensor The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan. (See Fig. 39.) This sensor is factory installed. The operating range of temperature measurement is 0° to 158_F. See Table 6 for sensor temperature/resistance values. Table 6—Supply Air Sensor Temperature/ Resistance Values TEMPERATURE (F)
  • Page 37 LEGEND Potentiometer Defaults Settings: Power Exhaust DCV— Demand Controlled Ventilation Minimum Pos. IAQ — Indoor Air Quality DCV Max. LA — Low Ambient Lockout Device DCV Set OAT — Outdoor-Air Temperature Enthalpy POT — Potentiometer RAT — Return-Air Temperature 500 OHM RESISTOR NOTE 1 NOTE 3...

  • Page 38: Supply Air Temperature Sensor

    Differential Enthalphy Control For differential enthalpy control, the EconoMi$er IV controller uses enthalpy sensors (HH57AC078 CRENTDIF004A00), one in the outside air and one in the return air duct. The EconoMi$er IV controller compares the outdoor air enthalpy to the return air enthalpy to determine EconoMi$er IV use.
  • Page 39 activation to allow the dampers to open. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload. Minimum Position Control There is a minimum damper position potentiometer on the EconoMi$er IV controller. (See Fig. 40.) The minimum damper position maintains the minimum airflow into the building during the occupied period.
  • Page 40 CONTROL CONTROL POINT CURVE APPROX. deg. F (deg. C) AT 50% RH 73 (23) 70 (21) 67 (19) 63 (17) APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C) Demand Controlled Ventilation (DCV) When using the EconoMi$er IV for demand controlled ventilation, there are some equipment selection criteria which should be considered.

  • Page 41: Step 7 - Adjust Evaporator-Fan Speed

    (See Table 8.) Use setting 1 or 2 for Carrier equipment. (See Table 8.) 1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.
  • Page 42 SETTING EQUIPMENT OUTPUT Proportional Interface w/Standard Proportional Building Control System Exponential Proportional Proportional Economizer Exponential Exponential Health & Safety Proportional Parking/Air Intakes/ Proportional Loading Docks LEGEND ppm — Parts Per Million 0.35 0.25 0.15 0.05 1000 Fig. 46 --- Humidi- -MiZert Adaptive Dehumidification System Static Pressure Drop (in. wg) Fig.
  • Page 43 Table 9—50HJ and 50he Fan Rpm at Motor Pulley Setting With Standard Motor* UNIT 50HJ 50HE 1044 1008 1185 1144 1460 1425 1585 1538 *Approximate fan rpm shown (standard motor/drive). Table 10—50HJ, 50HE Fan Rpm at Motor Pulley Setting With High-Static Motor* UNIT 1455 1423...
  • Page 44 Unit warranty will not be affected. See Table 11 and 12 on this page for additional information. 3. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify. 4. Interpolation is permissible. Do not extrapolate.
  • Page 45 Table 16—Fan Performance 50HJ004, 50HE004 — Vertical Discharge Units; Standard Motor AIRFLOW Watts 0.14 1000 0.17 1100 0.21 1200 0.25 1300 0.30 1400 0.36 1500 0.42 AIRFLOW Watts 1029 0.63 1095 1000 1052 0.70 1118 1100 1076 0.77 1141 1200 1100 0.85 1165...
  • Page 46 Table 18—Fan Performance 50HJ005, 50HE005 — Vertical Discharge Units; Standard Motor AIRFLOW Watts 1200 0.25 1300 0.30 1400 0.36 1500 0.42 1600 0.49 1700 0.57 1800 0.65 1900 0.75 1014 2000 0.86 1050 AIRFLOW Watts 1200 1100 0.85 1165 1300 1126 0.94 1189...

  • Page 47: External Static Pressure (In. Wg)

    Table 20—Fan Performance 50HJ006, 50HE006 Single-Phase — Vertical Discharge Units; Standard Motor (Belt Drive)* AIRFLOW Watts 1500 0.40 1600 0.46 1700 0.54 1800 0.62 1001 1900 0.71 1037 2000 0.81 1073 2100 1023 0.92 1110 2200 1063 1.05 1147 2300 1104 1.18 1046...
  • Page 48 Table 21—Fan Performance 50HJ006, 50he006 Three-Phase — Vertical Discharge Units; Standard Motor (Belt Drive)* AIRFLOW Watts 1500 0.40 1600 0.46 1700 0.54 1800 0.62 1001 1900 0.71 1037 2000 0.81 1073 2100 1023 0.92 1110 2200 1063 1.05 1147 2300 1104 1.18 1046...
  • Page 49 Table 22—Fan Performance 50HJ006, 50HE006 — Vertical Discharge Units; High-Static Motor AIRFLOW Watts 1500 0.40 1600 0.46 1700 0.54 1800 0.62 1001 1900 0.71 1037 2000 0.81 1073 2100 1023 0.92 1110 2200 1063 1.05 1147 2300 1104 1.18 1046 1185 2400 1145...
  • Page 50 Table 23—Fan Performance 50HJ007 — Vertical Discharge Units; Standard Motor (Belt Drive)* AIRFLOW Watts 1800 0.63 1006 1900 0.72 1042 2000 0.82 1078 2100 1024 0.93 1115 2200 1063 1.05 1152 2300 1103 1.18 1044 1189 2400 1143 1.32 1168 1227 2500 1183...
  • Page 51 Table 24—Fan Performance 50HJ007 — Vertical Discharge Units; High-Static Motor (Belt Drive)* AIRFLOW Watts 1800 0.63 1006 1900 0.72 1042 2000 0.82 1078 2100 1024 0.93 1115 2200 1063 1.05 1152 2300 1103 1.18 1044 1189 2400 1143 1.32 1168 1227 2500 1183...
  • Page 52 Table 26—Fan Performance 50HJ004, 50HE004 — Horizontal Discharge Units; Standard Motor AIRFLOW Watts 0.14 1000 0.16 1100 0.20 1200 0.23 1300 0.28 1400 0.33 1500 0.38 AIRFLOW Watts 1017 0.64 1082 1000 1105 1041 0.70 1100 1065 0.77 1129 1200 1089 0.84 1153...
  • Page 53 Table 28—Fan Performance 50HJ005, 50he005 — Horizontal Discharge Units; Standard Motor AIRFLOW Watts 1200 0.23 1300 0.28 1400 0.33 1500 0.38 1600 0.44 1700 0.51 1800 0.59 1900 0.67 2000 0.76 1004 AIRFLOW Watts 1200 1089 0.84 1153 1300 1114 0.92 1177 1400...
  • Page 54 Table 30—Fan Performance 50HJ006, 50HE006 Single-Phase — Horizontal Discharge Units; AIRFLOW Watts 1500 0.33 1600 0.39 1700 0.45 1800 0.52 1900 0.59 2000 0.67 2100 0.77 1017 2200 0.87 1050 2300 0.97 1082 2400 1033 1.09 1115 2500 1069 1.22 1084 —...
  • Page 55 Table 31—Fan Performance 50HJ006, 50HE006 Three-Phase — Horizontal Discharge Units; AIRFLOW Watts 1500 0.33 1600 0.39 1700 0.45 1800 0.52 1900 0.59 2000 0.67 2100 0.77 1017 2200 0.87 1050 2300 0.97 1082 2400 1033 1.09 1115 2500 1069 1.22 1084 1149 AIRFLOW...
  • Page 56 Table 32—Fan Performance 50HJ006, 50HE006 — Horizontal Discharge Units; AIRFLOW Watts 1500 0.33 1600 0.39 1700 0.45 1800 0.52 1900 0.59 2000 0.67 2100 0.77 1017 2200 0.87 1050 2300 0.97 1082 2400 1033 1.09 1115 2500 1069 1.22 1084 1149 AIRFLOW Watts...
  • Page 57 Table 34—Fan Performance 50HJ007 — Horizontal Discharge Units; High-Static Motor (Belt Drive)* AIRFLOW Watts 1800 0.51 1900 0.59 2000 0.66 2100 0.75 1019 2200 0.85 1051 2300 0.95 1083 2400 1026 1.06 1115 2500 1061 1.19 1053 1148 2600 1097 1.32 1169 1181...

  • Page 58: Pre-Start-Up

    PRE-START-UP WARNING FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury, death, and/or property damage. 1. Follow recognized safety practices and wear protective goggles when checking or servicing a refrigerant system. 2. Do not operate the compressor or provide any electric power to the unit unless the compressor terminal cover is in place and secured.
  • Page 59 with a Cycle-LOC™ protection device. The unit shuts down on any safety trip and remains off; an indicator light on the thermostat comes on. Check the reason for the safety trip. Compressor restart is accomplished by manual reset at the thermostat by turning the selector switch to OFF position and then to ON position.
  • Page 60 With Y1 and Y2 energized Economizer maintains an SASP = SATLO2 + 3. If SAT > SASP + 5 and economizer position >80%, economizer will go to minimum position for 3 minutes or until SAT > 68_F. If compressor one is on then second stage of mechanical cooling will be energized;...

  • Page 61: Mode Operation

    SPT reading is available OAT ± SPT Economizer Position is NOT forced If any of the above conditions are not met, the economizer submaster reference (ECSR) is set to maximum limit and the damper moves to minimum position. The operating sequence is complete.

  • Page 62: Service

    Fig. 53 --- Humidi- -Mizert Hot Gas Reheat Mode Operation Hot Gas Reheat Mode When the humidity levels in the space require humidity control, a hot gas solenoid valve (specific to hot gas reheat mode only) will open to bypass a portion of hot gas refrigerant around the condenser coil.
  • Page 63 Table 35—Humidi-Mizer Adaptive Dehumidification System Sequence of Operation and System Response — Single Compressor Unit (50HE003- -006, 50HJ004-007) THERMOSTAT INPUT ECONOMIZER FUNCTION OAT. < Economizer Set Point — — NOTE: On a thermostat call for W1, all cooling and dehumidification will be off. LEGEND OAT --- Outdoor Air Temperature Fig.
  • Page 64 Low Charge Cooling Using Cooling Charging Charts, Fig. 58- -61, vary refrigerant until the conditions of the charts are met. Note the charging charts are different from type normally used. Charts are based on charging the units to the correct superheat for the various operating conditions.
  • Page 65 Fig. 61 --- Cooling Charging Chart, Standard 50HJ007 Fig. 62 --- Cooling Charging Chart, 50HJ004 with Optional Humidi- -MiZer Adaptive Dehumidification System C06142 Fig. 63 --- Cooling Charging Chart, 50HJ005 with Optional Humidi- -MiZer Adaptive Dehumidification System NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized.
  • Page 66 Fig. 64 --- Cooling Charging Chart, 50HJ005 with Optional Humidi- -MiZer Adaptive Dehumidification System Fig. 65 --- Cooling Charging Chart, 50HJ007 with Optional Humidi- -MiZer Adaptive Dehumidification System To Use Cooling Charging Chart, Standard Unit Take the outdoor ambient temperature and read the suction pressure gage.

  • Page 67: Troubleshooting

    IMPORTANT: Refer to Troubleshooting Tables for additional information. Step 6 —Replacement Parts A complete list of replacement parts may be obtained from any Carrier distributor upon request. TROUBLESHOOTING Step 1 —Unit Troubleshooting Refer to Tables 34-38 for unit troubleshooting details.
  • Page 68 DCV Minimum and Maximum Position To check the DCV minimum and maximum position: 1. Make sure EconoMi$er IV preparation procedure has been performed. 2. Connect a 9-v battery to AQ (positive node) and AQ1 (negative node). The DCV LED should turn on. The actuator should drive to between 90 and 95% open.
  • Page 69 PROBLEM Compressor and Condenser Fan Will Not Start. Compressor Will Not Start But Condenser Fan Runs. Compressor Cycles (Other Than Normally Satisfying Thermostat). Compressor Operates Continuously. Excessive Head Pressure. Head Pressure Too Low. Excessive Suction Pressure. Suction Pressure Too Low. Evaporator Fan Will Not Shut Off.
  • Page 70 Table 37—Humidi-MiZer™ Adaptive Dehumidification System Subcooling Mode Service Analysis PROBLEM Subcooling Mode (Liquid Reheat) No power to control transformer from Will Not Energize. evaporator-fan motor. No power from control transformer to liquid line solenoid valve. Liquid line solenoid valve will not operate. Liquid line solenoid valve will not open.
  • Page 71 C06053 Fig. 70 --- EconoMi$er IV Functional View...

  • Page 72: Preliminary Information

    SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS (IF EQUIPPED) Copyright 2006 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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