Carrier 50LC 07 Series Service And Maintenance Instructions
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Carrier 50LC 07 Series Service And Maintenance Instructions

Nominal 6 to 10 tons, with puron r-410a refrigerant
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50LC*D07---D12
Nominal 6 to 10 Tons
With Puron (R---410A) Refrigerant
Service and Maintenance Instructions

TABLE OF CONTENTS

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SAFETY CONSIDERATIONS

1
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical
2
components. Only trained and qualified service personnel
3
should
install,
5
equipment. Untrained personnel can perform the basic
maintenance functions of replacing filters. Trained service
7
personnel should perform all other operations.
9
When working on air-conditioning equipment, observe
15
precautions in the literature, tags and labels attached to
16
the unit, and other safety precautions that may apply.
23
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations.
24
Have fire extinguishers available for all brazing
27
operations.
34
Follow all safety codes. Wear safety glasses and work
37
gloves. Use quenching cloth for brazing operations. Have
39
fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
46
the unit. Consult local building codes and National
60
Electrical Code (NEC) for special requirements.
82
Recognize safety information. This is the safety- - alert
82
symbol
. When you see this symbol on the unit and in
83
instructions or manuals, be alert to the potential for
personal injury.
84
85
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety- - alert
87
symbol. DANGER identifies the most serious hazards
93
which will result in severe personal injury or death.
99
WARNING signifies a hazard which could result in
personal injury or death. CAUTION is used to identify
unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
repair,
or
service
air-conditioning

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  • Page 1: Table Of Contents

    50LC*D07---D12 Nominal 6 to 10 Tons With Puron (R---410A) Refrigerant Service and Maintenance Instructions TABLE OF CONTENTS SAFETY CONSIDERATIONS SAFETY CONSIDERATIONS ....Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical UNIT ARRANGEMENT AND ACCESS...

  • Page 2: Unit Arrangement And Access

    WARNING FILTER ACCESS PANEL ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death. Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock and rotating equipment could cause injury. WARNING INDOOR COIL ACCESS PANEL ELECTRICAL OPERATION HAZARD...

  • Page 3: Supply Fan (Blower) Section

    S Refrigerant charge level 22 3/8 (569 mm) S Evaporator coil cleaning S Evaporator blower motor amperage Heating S Power wire connections S Fuses ready DIVIDER S Manual- - reset limit switch is closed OUTSIDE Economizer or Outside Air Damper S Inlet filters condition HOOD S Check damper travel (economizer)
  • Page 4 Supply Fan (Belt- -Drive) 7. Tighten all bolts. 8. Check the tension after a few hours of runtime and The supply fan system consists of a forward- - curved re- - adjust as required. centrifugal blower wheel on a solid shaft with two Adjustable- - Pitch Pulley on Motor concentric type bearings, one on each side of the blower housing.

  • Page 5: Cooling

    This vibration generated by the motor/belt- - drive system. cleaner is available from Carrier Replacement parts division as part number P902- - 0301 for one gallon container, and part number P902- - 0305 for a 5 gallon container.
  • Page 6 to ensure long life of the coil. Failure to clean the coils instructions included with the cleaner. The may result in reduced durability in the environment. optimum solution temperature is 100F (38C). NOTE: Do NOT USE water in excess of 130F (54C), Avoid the use of as the enzymatic activity will be destroyed.

  • Page 7: Puronr (R- - 410A) Refrigerant

    Amount of refrigerant charge is listed on the unit’s label indicating this feature. For a cylinder with a dip nameplate. Refer Carrier GTAC2- - 5 Charging, tube, place the cylinder in the upright position (access Recovery, Recycling and Reclamation training manual valve at the top) when removing liquid refrigerant for and the following procedures.
  • Page 8 Compressors Replacing Compressor Lubrication The compressor used with Puron refrigerant contains a POE oil. This oil has a high affinity for moisture. Do not Compressors are charged with the correct amount of oil at remove the compressor’s tube plugs until ready to insert the factory.

  • Page 9: Cooling Charging Charts

    COOLING CHARGING CHARTS C150169 Fig. 9 - - Cooling Charging Charts (07)
  • Page 10 COOLING CHARGING CHARTS C150172 Fig. 10 - - Cooling Charging Charts (08)
  • Page 11 COOLING CHARGING CHARTS C150170 Fig. 11 - - Cooling Charging Charts (09)
  • Page 12 COOLING CHARGING CHARTS C150171 Fig. 12 - - Cooling Charging Charts (12)
  • Page 13 Compressor Rotation Condenser- -Fan Location On 3- - phase units with scroll compressors, it is important See Fig. 13. to be certain compressor is rotating in the proper 1. Shut off unit power supply. Install lockout tag. direction. To determine whether or not compressor is 2.
  • Page 14 Table 1 – Cooling Service Analysis PROBLEM CAUSE REMEDY Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, Replace component. Compressor and Condenser or control relay. Fan Will Not Start. Insufficient line voltage.

  • Page 15: Convenience Outlets

    CONVENIENCE OUTLETS 4. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket. Tighten the two screws until snug (do not over-tighten). WARNING 5. Mount the weatherproof cover to the backing plate as shown in Fig.

  • Page 16: Smoke Detectors

    SMOKE DETECTORS Smoke detectors are available as factory- - installed options on 50LC models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air. Return Air smoke detectors are arranged for vertical return configurations only.
  • Page 17 Sensor The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering The sensor includes a plastic housing, a printed circuit false alarms. A rapid change in environmental conditions, board, a clear plastic cover, a sampling tube inlet and an such as smoke from a fire, causes the sensor to signal an exhaust tube.
  • Page 18 Completing Installation of Return Air Smoke Return Air Detector module (shipping position shown)* Sensor 1. Unscrew the two screws holding the Return Air Sensor detector plate. (See Fig. 22.) Save the screws. Controller module 2. Remove the Return Air Sensor and its detector plate. 3.
  • Page 19 C13381 Fig. 24 - - Typical Smoke Detector System Wiring Highlight E Sensor Alarm Test Procedure 1. Hold the test magnet where indicated on the side of WHT lead at Smoke Alarm input on LCTB provides 24- - v the sensor housing for seven seconds. signal to FIOP DDC control.
  • Page 20 Dirty Controller Test CAUTION The dirty controller test checks the controller’s ability to initiate a dirty sensor test and indicate its results. OPERATIONAL TEST HAZARD CAUTION Failure to follow this caution may result in personnel and authority concern. Changing the dirty sensor test operation will put the OPERATIONAL TEST HAZARD detector into the alarm state and activate all automatic Failure to follow this caution may result in personnel...
  • Page 21 Remote Test/Reset Station Dirty Sensor Test 2. Verify that the test/reset station’s Trouble LED flashes. The test/reset station dirty sensor test checks the test/reset Detector Cleaning station’s ability to initiate a sensor dirty test and indicate the results. It must be wired to the controller as shown in Cleaning the Smoke Detector Fig.
  • Page 22 Table 3 – Detector Indicators CONTROL OR INDICATOR DESCRIPTION Magnetic test/reset switch Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in the normal state. Alarm LED Indicates the sensor is in the alarm state. Trouble LED Indicates the sensor is in the trouble state.

  • Page 23: Protective Devices

    2. Check the sensor’s cover. If it is loose or missing, The supply fan motor is equipped with an overcurrent secure the cover to the sensor housing. protection device. The type of device depends on the motor size. (See Table 4.) 3.

  • Page 24: Electric Heaters

    ELECTRIC HEATERS DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH LOCATION HEATER 50LC units may be equipped with field- - installed COVERS accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line- - break limit switches and a control contactor.
  • Page 25 Table 5 – Heater Model Number Bare Heater Model Number Heater Sales Package Includes: Bare Heater Carton and packing materials Installation sheet Line- - break/auto- - reset limit switches are mounted on the CONTROL base plate of each heater module. (See Fig. 32.) These are accessed through the indoor access panel.

  • Page 26: Wiring Diagrams

    WIRING DIAGRAMS LCTB CONTL See Figs. 34 through 40 for typical wiring diagrams. BOARD BRN BRN Field Connections Elec Htr HR1: On Heater 1 in Position #1 HR2: On Heater 2 in Position #2 (if installed) C08331 Fig. 33 - - Accessory Electric Heater Control Connections...
  • Page 27 C150181 Fig. 34 - - 50LC 07 Control Wiring Diagram...
  • Page 28 C150225 Fig. 35 - - 50LC 07 RTU Open Control Wiring Diagram...
  • Page 29 C14095 Fig. 36 - - 50LC 07 Power Wiring Diagram, 208/230V, 460V and 575V Units...
  • Page 30 C14013 Fig. 37 - - 50LC 08- - 12 Control Wiring Diagram...
  • Page 31 C14104 Fig. 38 - - 50LC 08- - 12 RTU Open Control Wiring Diagram...
  • Page 32 C14105 Fig. 39 - - 50LC 08- - 12 Power Wiring Diagram, 208/230V Units...
  • Page 33 C150216 Fig. 40 - - 50LC 08- - 12 Power Wiring Diagram, 460V, 575V Units...

  • Page 34: Hacr

    The 50LC unit requires an external temperature control device such as a thermostat (field- - supplied). Thermostat — Install a Carrier- - approved accessory thermostat according to installation instructions included with the accessory. For complete economizer function and 3 stage compressor operation select a three- - stage cooling thermostat.
  • Page 35 Electric Heaters Typical Integrated Thermostat Staging Control 50LC units equipped with factory Connections (ISC) Board field- - installed electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line- - break limit switches and a control contactor.
  • Page 36 CONTROL BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT BRACKET MOUNTING TRACK SCREWS POWER WIRES FOAM FLANGE BUSHING HEATER RELAYS HEATER MOUNTING SCREWS C08135 C08136 Fig. 47 - - Typical Module Installation Fig. 48 - - Typical Single Point Installation Table 6 –...

  • Page 37: Isc Board

    In the case of the RTU Open option, The Carrier Integrated Staging Control (ISC) is intended the RTU Open controller provides the signal which is for use with a standard thermostat or direct digital control passed thru the ISC board to the Smoke Alarm terminal.
  • Page 38 Table 7 – Status Code Descriptions for ISC Board LEDs LED INDICATION ERROR# ERROR NAME LED01 LED02 LED03 LED04 LED05 Check Smoke Detector/PMR/AUX Check HPS/LPS/COFS Call for Y3 with no call for Y1. Check Y1 wiring. Call for Y3 with no call for Y1/Y2. Check Y1 wiring. Call for Y2 with no call for Y1.

  • Page 39: Economi$Er X (Factory- - Installed)

    require all outdoor fans to run at the same pre- - set factory parts warranty referred to in section 140.4 only applies to factory in- Low Ambient Speed. stalled economizers. Please refer to your economizer on your unit. EconoMi$er X is an ultra low leak economizer system OF SPEED which is available for 50LC 07- - 12 units.
  • Page 40 Additional control capabilities include automatic detection of S ALARMS new sensors and detection of sensor failure or loss of Using the Keypad with Settings and Parameters — communication. To use the keypad when working with Setpoints, System The W7220 control module includes an integral user and Advanced Settings, Checkout tests and Alarms: interface with keypad and LCD display that permits direct input of setpoint values and configurations and display of...
  • Page 41 Table 9 – Menu Structure Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS ECON AVAIL YES/NO ECONOMIZING AVAIALBLE YES = economizing available; the system can use outside air for free cooling when required ECONOMIZING YES/NO ECONOMIZING ACTIVE YES = Outside air being used for 1...
  • Page 42 Table 9 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS EXH2 OUT ON/OFF EXHAUST STAGE 2 RELAY OUTPUT Output of AUX terminal; displays only if AUX = EXH2 = relay closed OFF = relay open MECH COOL ON 0, 1, or 2...
  • Page 43 Table 9 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SYSTEM INSTALL 01/01/10 Display order = MM/DD/YY SETUP Setting order = DD, MM, then YY . UNITS DEG _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.
  • Page 44 Table 9 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value CHECKOUT DAMPER VMIN .HS Positions OA damper to VMIN High Speed position DAMPER VMAX .HS Positions OA damper to VMAX High Speed position DAMPER OPEN Positions OA damper to the full open position.
  • Page 45 Connections and Applications W7220 Economizer Module Wiring — Use Fig. 54 and Tables 10 and 11 to locate the wiring terminals for the Economizer module. W7220 Controller Left Terminal Right Terminal Block Label Block Label C12014 Fig. 54 - - W7220 Economizer Module Terminal Connection Labels Table 10 –...

  • Page 46: Economizer Control Configurations

    20-K OHM PNO HH79NZ007 TSTAT W1 SD- O/B 20-K OHM OCCUPANCY --- TSTAT G PNO HH79NZ007 W7220 E- GND GROUND GRN/YEL S - BUS CONTROLlER POWER EXHAUST RELAY EXH 1 S - BUS IAQ - 2 - 10 SENSOR IAQ COM Y2 - 1 TSTAT Y3 IAQ 24V+...
  • Page 47 The W7220 calculates the enthalpy and dew point using Fig. 57 shows the 5 current boundaries. There is also a the OA temperature and humidity input from the OA high limit boundary for differential enthalpy. The high enthalpy sensor. When the OA temperature, OA humidity limit boundary is ES1 when there are no stages of and OA dew point are all below the selected boundary, the mechanical cooling energized and HL (high limit) when a...
  • Page 48 Demand Control Ventilation — should be set to an economizer position that brings in enough fresh air to remove contaminants and CO Demand Control Ventilation (DCV) function requires a generated by sources other than people; this airflow rate is space air CO sensor be connected to the W7220 designated Va.
  • Page 49 To determine the damper setpoint position, perform the When determining VENTMIN setpoints, substitute the following procedure for each condition setpoint, with value for Va in place of Vbz in the formula. mechanical cooling OFF: DCV Setpoint: The SETPOINTS parameter DCV SET Calculate the appropriate supply air temperature using the defines the space CO level above which the DCV mode...
  • Page 50 Hardware Table 14 – SAT/OAT Sensor Characteristics Deg C Ohms Deg F Ohms Actuators — --- 30 415156 --- 20 386130 The Economizer X damper actuators are direct- - coupled --- 25 301540 193070 types with spring- - return. Power is 24- - v from the W7220 --- 20 221210 101820...
  • Page 51 Table 17 – Supply Fan Speed Logic without Economizer 51/64 (21) TSTAT OUTPUT G/OCC 0--- V 24---V 0--- V 0--- V 4-1/4 (108) 0--- V 24---V 0--- V 0--- V 0--- V 0--- V 24---V 0--- V 2-3/4 (70) 0--- V 0--- V 0--- V 24---V...
  • Page 52 W7220 input OCC remains energized; the outside air outdoor enthalpy, differential dry bulb or differential damper remains in MIN POS L. If ISC terminal G is also enthalpy), a space thermostat call for Stage 1 Cooling de- - energized with Y1, indicating AUTO Fan operation, energizes ISC terminals G and Y1;...
  • Page 53 Table 19 – W7220 Input’/Output with Demand Control Ventilation (DCV) INPUTS OUTPUTS Ref: Occupancy DEMAND OUTSIDE AIR Mechanical Cooling Stage OCC Yes OCC No CONTROL Good to Y1--- I Y2--- I VENTILATION economize? Y1--- O/1ST Y2--- O/2ND Outside Air Damper Position 0--- v/Off 0--- v/Off VENTMIN L...
  • Page 54 Demand Control Ventilation — Setup and configuration involves stepping through three menus and enabling required functions and re- - selecting If a space or return air CO sensor is connected to the setpoints to meet project requirements. The menus used Economize X control, a Demand Control Ventilation are SYSTEM SETUP, ADV SETUP and SETPOINTS.
  • Page 55 To perform a Checkout test: Troubleshooting 1. Scroll to the desired test in the Checkout menu using Power Up Delay— the the buttons. 2. Press the button to select the item. Upon power up (or after a power outage or brownout), the 3.
  • Page 56 Table 20 – Operating Issues and Concerns Issue or Concern Possible Cause and Remedy My outdoor temperature reading on Check the sensor wiring: the STATUS menu is not accurate. • Enthalpy sensors are to be wired to the S--- Bus terminals. •...
  • Page 57 C13683 Fig. 62 - - Typical EconoMi$er X Wiring Diagram...
  • Page 58 CONTROL SET POINT AND CONFIGURATION LOG Project Name/Location: Model Number: Serial Number: Date: Technician Menu Tables: 1. SYSTEM SETUP 2. ADVANCED SETUP 3. SETPOINTS Menu 1: System Setup Parameter Project Parameter Default Parameter Notes Value Range and Increment Value INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY...
  • Page 59 Menu 2: Advanced Setup Parameter Project Parameter Default Parameter Notes Value Range and Increment Value MA LO SET 45_F (7_C) 35 to 55_F; SUPPLY AIR TEMPERATRUE LOW LIMIT (2 to 13_C) Temperature to achieve Freeze Protection (close damper and alarm if incremented by 1_ temperature at SAT location falls below setup value) FREEZE POS...

  • Page 60: Variable Frequency Drive (Vfd)

    Menu 3: Setpoints Parameter Project Parameter Default Parameter Notes Value Range and Increment Value MAT SET 53_F 38 to 65_F; SUPPLY AIR SETPOINT (12_C) (3 to 18_C) Setpoint determines where the economizer will modulate the OA increment by 1_ damper to maintain the supply air temperature. See Menu Note 2 (on page 44).
  • Page 61 Variable Filter - used on Frequency 575V units only! Drive (VFD) C13111 Fig. 64 - - VFD Location, 07 Unit C13110 Fig. 63 - - Variable Frequency Drive (VFD) Variable Frequency Filter - used on Drive (VFD) 575V units only! C13229 Fig.
  • Page 62 Com. 1-20 Motor Power ALPHA NUMERIC [2] 0.12KW-0.16HP DISPLAY Warn. Setup 1 Alarm Status Quick Main MENU KEY Menu Menu Menu C13114 Com. Com. LED: Flashes when bus communications is communicating. NAVIGATION KEYS Green LED/On: Control selection is working. STATUS Yellow LED/Warn.: Indicates a warning.
  • Page 63 Connecting the Keypad Directly to the VFD — Male Connector - connect to VFD 1. Place the bottom of the VFD keypad into the variable Front Panel frequency drive as shown in Fig. 67. C13116 Fig. 67 - - Align Bottom of VFD Keypad with Opening in VFD Front Panel 2.
  • Page 64 change the language, press the OK key and use the Y 3. Clearing Alarm 060: External Interlock: and B keys to scroll to the desired language and then a. Press the Menu key twice to position the B(tri- press OK. angle icon) over Main Menu;...
  • Page 65 5. Entering Motor Data: m. Press B(Down Arrow) once to display the following - - a. Press the Menu key to move the B(triangle icon) so it is positioned over Main Menu. The 1-25 Motor Nominal Speed display show the following - - 1740rpm 0--- ** Operation / Display n.
  • Page 66 l. Press B(Down Arrow) once, the following f. Press the Back key until the following display display appears - - appears - - 1-82 Min Speed for Functio… 3--- 0* Reference Limits 1.0 Hz 3--- 1* References m. Press OK to highlight the number and then use g.
  • Page 67 select 10.00s. Press OK again to set the selected 10. Setting Digital Inputs: Ramp Down Time. a. Press the Back key until the following display 9. Setting Limits: appears - - a. Press the Back key until the following display 3--- ** Reference / Ramps appears - - 4--- ** Limits / Warnings...
  • Page 68 14--- 1* Mains On/Off 14--- 2* Reset Functions e. Press OK, the following display appears - - 14-20 Reset Mode [0] Manual reset f. Press OK to highlight the number in the bracket. g. Use the Y and B (Up and Down Arrow) keys to change the number to 3 for 3 automatic resets and then press OK.
  • Page 81 Legend and Notes for Tables 25 and 26 Example: Supply voltage is 230-3-60 AB = 224 v LEGEND: BC = 231 v BRKR --- Circuit breaker AC = 226 v --- Convenient outlet DISC --- Disconnect --- Full load amps (224 + 231 + 226) --- Indoor fan motor Average Voltage =...

  • Page 82: Pre- - Start-Up

    PRE- -START- -UP WARNING WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal PERSONAL INJURY HAZARD injury or death. Failure to follow this warning could result in personal Relieve pressure and recover all refrigerant before injury or death. system repair or final unit disposal.

  • Page 83: Fastener Torque Values

    Internal Wiring Check unit charge. Refer to Refrigerant Charge section. Check all electrical connections in unit control boxes. Reset thermostat at a position above room temperature. Tighten as required. Both compressors will shut off. Evaporator fan will shut off after a 30- - second delay. The supply fan and both Refrigerant Service Ports compressors will shut off.

  • Page 84: Model Number Significance

    MODEL NUMBER NOMENCLATURE 10 11 12 13 14 15 16 17 18 5 0 L C D 0 1 2 A 2 A 5 -- 0 A 0 A 0 ____ ____ ____ Unit Type Brand / Packaging 50 = Electric Cooling 0 = Standard Packaged Rooftop 1 = LTL...

  • Page 85: Sequence Of Operation

    General The Carrier Integrated Staging Control Board (ISC) is intended for use with a standard thermostat capable of three cooling stages. After initial power to the board, a Green LED will blink with a 1 second duty cycle indicating the unit is running properly.
  • Page 86 Low Ambient Cooling Operation down to 40_F (4_C) In Low Ambient RTU conditions when the temperature is between 55_F (13_C) and 40_F (4_C), the Low Ambient Switch (LAS) will be active and the outdoor-fans will run to the pre-set factory outdoor-fan speed. When the temperature is greater than 65_F (18_C), the Low Ambient Switch will deactivate and the outdoor-fans will run in the standard cooling mode.

  • Page 87: Physical Data

    TABLE 28 – PHYSICAL DATA (COOLING) 6- - 10 TONS 50LC**07 50LC**08 50LC**09 50LC**12 Refrigeration System # Circuits / # Comp. / Type 1/2/Scroll 1/2/Scroll 1/2/Scroll 1/2/Scroll RTPF Models R--- 410a charge (lbs --- oz) 15 --- 8 22 --- 5 25--- 11 24--- 15 Alternate (Humidimizer) R--- 410a charge (lbs --- oz)
  • Page 88 Table 28 – PHYSICAL DATA (cont.) (COOLING) 6- - 10 TONS 50LC**07 50LC**08 50LC**09 50LC**12 Condenser Coil 1 Material Cu / Al Cu / Al Cu / Al Cu / Al Coil type 5/16” RTPF 5/16” RTPF 5/16” RTPF 5/16” RTPF Rows / FPI 2 / 18 2 / 18...
  • Page 89 TABLE 29 – ELECTRIC HEAT - - ELECTRICAL DATA 50LC*07 SINGLE POINT KIT PART NUMBER CRSINGLEXXXA00 ELECTRIC NO C.O. or UNPWRD C.O. w/PWRD C.O. NOM. APP PWR HEATER PART w/ P .E. w/ P .E. V ---Ph---Hz TYPE PWR (kW) (kW) NUMBER NO P .E.
  • Page 90 TABLE 30 – ELECTRIC HEAT - - ELECTRICAL DATA 50LC*08 SINGLE POINT KIT PART NUMBER CRSINGLEXXXA00 ELECTRIC NO C.O. or UNPWRD C.O. w/PWRD C.O. NOM. APP PWR HEATER PART w/ P .E. w/ P .E. V ---Ph---Hz TYPE PWR (kW) (kW) NUMBER NO P .E.
  • Page 91 TABLE 31 – ELECTRIC HEAT - - ELECTRICAL DATA 50LC*09 SINGLE POINT KIT PART NUMBER CRSINGLEXXXA00 ELECTRIC NO C.O. or UNPWRD C.O. w/PWRD C.O. NOM. APP PWR HEATER PART w/ P .E. w/ P .E. V ---Ph---Hz TYPE PWR (kW) (kW) NUMBER NO P .E.
  • Page 92 TABLE 32 – ELECTRIC HEAT - - ELECTRICAL DATA 50LC*12 SINGLE POINT KIT PART NUMBER CRSINGLEXXXA00 ELECTRIC NO C.O. or UNPWRD C.O. w/PWRD C.O. NOM. APP PWR HEATER PART w/ P .E. w/ P .E. V ---Ph---Hz TYPE PWR (kW) (kW) NUMBER NO P .E.

  • Page 93: General Fan Performance

    5. For information on the electrical properties of Carrier motors, please see the Electrical information section of this book. 6. For more information on the performance limits of Carrier motors, see the application data section of this book. 7. The EPACT (Energy Policy Act) regulates energy requirements for specific types of indoor fan motors. Motors regu-...
  • Page 98 --- Standard static uses direct drive motor Catalog No:50LC ---7---12---02SM Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 07/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

  • Page 99: Start-Up Checklist

    START-UP CHECKLIST I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: II. PRE-START-UP (insert checkmark in box as each item is completed) j VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT j REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS j VERIFY THAT FLUE HOOD IS INSTALLED...
  • Page 100 Catalog No: 50LC ---7---12---02SM Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 07/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 50LC07--- 12--- 01SM...

This manual is also suitable for:

50lc 08 series50lc 09 series50lc 12 series

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