Carrier WeatherExpert 50LC Installation Instructions Manual Download

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Installation Instructions

50LC

WeatherExpert

Series

Single Package Rooftop

Cooling Only

with Puron

(R---410A) Refrigerant

Size: 07

NOTE

: Read the entire instruction manual before starting

the installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . .

Rated Indoor Airflow (cfm)

. . . . . . . . . . . . . . . . . . . . .

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Jobsite Survey

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Step 1 -- Plan for Unit Location

. . . . . . . . . . . . . . . . . .

Roof Mount

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Step 2 -- Plan for Sequence of Unit Installation

. . . . . .

Curb--Mounted Installation

. . . . . . . . . . . . . . . . . . .

Pad--Mounted Installation

. . . . . . . . . . . . . . . . . . . .

Frame--Mounted Installation

. . . . . . . . . . . . . . . . . .

Step 3 -- Inspect Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Step 4 -- Provide Unit Support

. . . . . . . . . . . . . . . . . . .

Roof Curb Mount

. . . . . . . . . . . . . . . . . . . . . . . . . .

Slab Mount (Horizontal Units Only)

. . . . . . . . . . .

Alternate Unit Support

(In Lieu of Curb or Slab Mount)

. . . . . . . . . . . . . .

Step 5 -- Field Fabricate Ductwork

. . . . . . . . . . . . . . . .

For Units with Accessory or

Optional Electric Heaters

. . . . . . . . . . . . . . . . . . . .

Step 6 -- Rig and Place Unit

. . . . . . . . . . . . . . . . . . . . .

Positioning on Curb

. . . . . . . . . . . . . . . . . . . . . . . .

Step 7 -- Convert to Horizontal and Connect

Ductwork

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Step 8 -- Install Outside Air Hood

. . . . . . . . . . . . . . .

Economizer Hood Package Removal and Setup

— Factory Option

. . . . . . . . . . . . . . . . . . . . . . . . .

Economizer Hood

. . . . . . . . . . . . . . . . . . . . . . . . .

Step 9 -- Install External Condensate Trap and Line

Step 10 -- Make Electrical Connections

. . . . . . . . . . .

Field Power Supply

. . . . . . . . . . . . . . . . . . . . . . . .

Units With Factory--Installed

Non--Fused Disconnect or HACR

. . . . . . . . . . . . . .

Units Without Factory--Installed

Non--Fused Disconnect or HACR

. . . . . . . . . . . . .

All Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Convenience Outlets

. . . . . . . . . . . . . . . . . . . . . . .

HACR

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Factory--Option Thru--Base Connections

. . . . . .

Units Without Thru--Base Connections

. . . . . . . .

Field Control Wiring

. . . . . . . . . . . . . . . . . . . . . . .

Thermostat

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unit Without Thru--Base Connection Kit

. . . . . . .

Heat Anticipator Settings

. . . . . . . . . . . . . . . . . . .

Electric Heaters

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Single Point Boxes and Supplementary Fuses

. . .

Single Point Boxes without Fuses

. . . . . . . . . . . .

Low--Voltage Control Connections

. . . . . . . . . . . .

Humidi--MiZer

System Control Connections

. . . .

Humidi--MiZer System -- Space RH Controller

. .

RTU Open Controller (Factory--Installed Option)

. . .

SystemVu

Controller (Factory--Installed Option)

. .

Integrated Staging Control (ISC) Board

. . . . . . . . . . .

ISC Board — Sequence of Operation

. . . . . . . . . . .

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ventilation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cooling

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Humidi--MiZer System (Optional)

. . . . . . . . . . . . .

Economizer (Optional)

. . . . . . . . . . . . . . . . . . . . .

Low Ambient Cooling Operation

Down to 40

F (4

. . . . . . . . . . . . . . . . . . . . . . .

Heating

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EconoMi$er

X (Factory--Installed Option)

. . . . . . .

Unit Installation

. . . . . . . . . . . . . . . . . . . . . . . . . .

Enthalpy Sensor Relocation

. . . . . . . . . . . . . . . . .

W7220 Economizer Controller

. . . . . . . . . . . . . . . .

User Interface

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keypad

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu Structure

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connections and Applications

. . . . . . . . . . . . . . . . .

W7220 Economizer Module Wiring

. . . . . . . . . .

Economizer Control Configurations

. . . . . . . . . . . .

Enthalpy Changeover Control

. . . . . . . . . . . . . . .

Enthalpy Settings

. . . . . . . . . . . . . . . . . . . . . . . . .

Summary of Contents for WeatherExpert 50LC

Page 1: ...Power Supply 12 Units With Factory Installed Non Fused Disconnect or HACR 19 Units Without Factory Installed Non Fused Disconnect or HACR 20 All Units 20 Convenience Outlets 20 HACR 22 Factory Option Thru Base Connections 22 Units Without Thru Base Connections 22 Field Control Wiring 22 Thermostat 22 Unit Without Thru Base Connection Kit 23 Heat Anticipator Settings 23 Electric Heaters 23 Single P...

Page 2: ...tions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and appropriate national electrical codes in USA ANSI NFPA 70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is important to recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to t...

Page 3: ...ity control with TXV and Humidi MiZer System Coil Options Fin Tube Condenser Evaporator Hail Guard A Al Cu Al Cu B Precoat Al Cu Al Cu C E coat Al Cu Al Cu D E coat Al Cu E coat Al Cu E Cu Cu Al Cu F Cu Cu Cu Cu M Al Cu Al Cu Louvered Hail Guard N Precoat Al Cu Al Cu Louvered Hail Guard P E coat Al Cu Al Cu Louvered Hail Guard Q E coat Al Cu E coat Al Cu Louvered Hail Guard R Cu Cu Al Cu Louvered ...

Page 4: ...4 a50 9584 Fig 2 Unit Dimensional Drawing ...

Page 5: ...5 a50 9585 Fig 2 Unit Dimensional Drawing cont ...

Page 6: ... the NEC National Electrical Code ANSI NFPA 70 for special installa tion requirements 2 Determine unit location from project plans or select unit location 3 Check for possible overhead obstructions which may interfere with unit lifting or rigging Step 1 Plan for Unit Location Select a location for the unit and its support system curb or other that provides for minimum clearances required for safet...

Page 7: ...d panel option check to be sure all latches are snug and in closed position Locate the carton containing the outside air hood parts see Fig 9 Do not remove carton until unit has been rigged and located in final position Step 4 Provide Unit Support Roof Curb Mount Accessory roof curb details and dimensions are shown in Fig 5 Assemble and install accessory roof curb in accordance with instructions s...

Page 8: ...ON OF CARRIER CORPORATION 1 DEC 2 DEC 3 DEC ANG MATERIAL AUTHORIZATION NUMBER TITLE 1029120 CURB ASY ROOF ENGINEERING MANUFACTURING ENGINEERING REQUIREMENTS SIZE DRAWING NUMBER REV T 005 Y 002 DRAFTER CHECKER D 50HJ405012 C WEIGHT MMC 12 16 09 SHEET 5 OF 5 SURFACE FINISH MFG PURCH MODEL INTERNAL USE ONLY NEXT DRAWING SCALE DISTRIBUTION PURCH N A NOTES 1 ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED 2...

Page 9: ...nt objects from falling into the conditioned space Due to electric heater supply duct will require 90 degree elbow WARNING Step 6 Rig and Place Unit Keep unit upright and do not drop Spreader bars are required Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 1 and Fig 6 for additional information Lifting holes are provided in base rails as shown in ...

Page 10: ...Barres d écartement requises pour soulever et transporter l unité REQUIRED C B A 914 1371 36 54 SPREADER BARS SEE DETAIL A VOIR DÉTAIL A PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB INSTALLER TOUTES LES BANDES D ISOLATION EN PLACE AVANT DE PLACER L APPAREIL SUR LE REBORD DE TOIT DUCT END PASSAGES CONDUITES MAX WEIGHT LB 1145 1080 KG 520 491 IN 88 88 MM 2235 2235 IN 32 30 3 8 MM 8...

Page 11: ...ay Qty 2 C08639 Fig 9 Economizer Hood Parts Location 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps outlined in Economizer Hood below Economizer Hood NOTE If the power exhaust accessory is to be installed on the unit the hood shipped with the unit will not be used and must be discarded Save the aluminum filter for use in the power ex...

Page 12: ... MINIMUM PITCH 1 25mm PER 10 3m OF LINE BASE RAIL OPEN VENT TO ROOF DRAIN DRAIN PLUG ROOF CURB SEE NOTE 3 76mm MIN C11291 Fig 14 Condensate Drain Piping Details All units must have an external trap for condensate drainage Install a trap at least 4 in 102 mm deep and protect against freeze up If drain line is installed downstream from the external trap pitch the line away from the unit at 1 in per ...

Page 13: ...l diagram for field power wiring connections WARNING FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction Do not connect aluminum wire between disconnect switch and 50LC unit Use only copper wire See Fig 15 COPPER WIRE ONLY ELECTRIC DISCONNECT SWITCH ALUMINUM WIRE A93033 Fig 15 Disconnect Switch and Unit Units Without Single Point Box Discon...

Page 14: ...14 a50 9586 Fig 17 50LC 07 Electro mechanical Control Wiring Diagram ...

Page 15: ...15 a50 9592 Fig 18 50LC 07 RTU Open Control Wiring Diagram ...

Page 16: ...16 a50 9587 Fig 19 50LC 07 SystemVut Control Wiring Diagram ...

Page 17: ...17 a50 9588 Fig 20 50LC 07 Power Wiring Diagram Electro mechanical and RTU Open Controls 208 230V 460V and 575V Units ...

Page 18: ...18 a50 9589 Fig 21 50LC 07 Power Wiring Diagram SystemVut Controls 208 230V 460V and 575V Units ...

Page 19: ...FF position with red arrow pointing at OFF 9 Install the handle on to the painted cover horizontally with the red arrow pointing to the left 10 Secure the handle to the painted cover with 2 screws and lock washers supplied 11 Engaging the shaft into the handle socket re install 3 hex screws on the NFD enclosure 12 Re install the unit front panel C12284 Fig 22 Location of Non Fused Disconnect Enclo...

Page 20: ... 3 phase units voltages between phases must be balanced within 2 and the current within 10 Use the formula shown in the legend for Tables 18 and 19 Note 3 see page 60 to determine the percent of voltage imbalance Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable Carrier warr...

Page 21: ...will provide service power to the unit when the unit disconnect switch or HACR switch is open Other connection methods will result in the convenience outlet circuit being de energized when the unit disconnect or HACR switch is open See Fig 28 Using unit mounted convenience outlets Units with unit mounted convenience outlet circuits will often require that two disconnects be opened to de energize a...

Page 22: ...ntrol box at this hole Units Without Thru Base Connections 1 Install power wiring conduit through side panel openings Install conduit between disconnect and control box 2 Install power lines to terminal connections as shown in Fig 16 Field Control Wiring The 50LC unit requires an external temperature control device such as a thermostat field supplied Thermostat Install a Carrier approved accessory...

Page 23: ...ric Heaters 50LC units may be equipped with factory or 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 One or two heater modules may be used in a unit Heater modules are installed in the compartment below the indoor supply fan outlet Access is...

Page 24: ...ls Refer to the accessory heater and Single Point Box installation instructions for details on tap connections or field installed electric heat accessory All fuses on 50LC units are 60 A Note that all heaters are qualified for use with a 60 A fuse regardless of actual heater ampacity so only 60 A fuses are necessary Single Point Boxes without Fuses Some unit heater applications not requiring suppl...

Page 25: ...h the hole provided in the unit corner post 2 Feed wires through the raceway built into the corner post see Fig 33 to the 24 v barrier located on the left side of the control box The raceway provides the UL required clearance between high voltage and low voltage wiring 3 Use wire nuts to connect humidistat cable to the leads in the low voltage wiring as shown in Fig 40 con necting PNK to PNK and P...

Page 26: ... lights The Red LED light configuration will indicate the type of error the board has identified See Fig 41 for LED locations and Table 3 for a list of status codes The ISC board can be remotely shutdown by removing Jumper 4 and wiring to the Remote Shutdown terminal The Smoke Control Module can shutdown the unit by removing Jumper 3 and wiring to the Smoke Shutdown terminal The Smoke Alarm termin...

Page 27: ...ll for cooling and dehumidification RDV Reheat Discharge Valve and TWV Three Way Valve close Indoor and Outdoor airflow will rise until reaching 100 of Speed At hot gas bypass reheating mode reheat 2 when there is a call for dehumidification without a call for cooling a portion of the hot gas from the compressor bypasses the condenser coil when RDV opens and hot gas is fed into the liquid line TWV...

Page 28: ... at the ISC board and energizes the first state of electric heat Upon more call for heat W2 at the thermostat power is applied to the G and W2 terminal at the ISC board and energizes the second state of electric heat The VFD controlled indoor fan will operate at high speed regardless of the heating demand EconoMi erR X Factory Installed Option EconoMi er X is an economizer system which is availabl...

Page 29: ...a menu s item and return to the list of menus The Menus in display order are S STATUS S SETPOINTS S SYSTEM SETUP S ADVANCED SETUP S CHECKOUT S ALARMS Using the Keypad with Settings and Parameters To use the keypad when working with Setpoints System and Advanced Settings Checkout tests and Alarms 1 Navigate to the desired menu 2 Press the Enter button to display the first item in the currently disp...

Page 30: ...C 0 to 140_F 18 to 60_C DISCHARGE AIR TEMPERATURE after Heating section Accessory sensor required Displays when Discharge Air sensor is connected and displays measured discharge temperature Displays if sensor sends invalid value if not connected short or out of range OA TEMP nn_F or _C 40 to 140_F 40 to 60_C OUTSIDE AIR TEMPERATURE Displays measured value of outdoor air temperature Displays if sen...

Page 31: ...urves for economizing using single enthalpy DCV SET 1100ppm 500 to 2000 ppm increment by 100 DEMAND CONTROLLED VENTILATION SETPOINT Displays only if CO2 sensor is connected Setpoint for Demand Controlled Ventilation of space Above the setpoint the OA dampers will modulate open to bring in additional OA to maintain a space ppm level below the setpoint MIN POS L 6 0 V 2 to 10 Vdc VENTILATION MINIMUM...

Page 32: ...damper and alarm if temperature falls below setup value FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION Damper position when freeze protection is active CLO closed MIN MIN POS or VENTMAX CO2 ZERO 0ppm 0 to 500 ppm Increment by 10 CO2 ppm level to match CO2 Sensor start level CO2 SPAN 2000ppm 1000 to 3000 ppm Increment by 50 CO2 ppm span to match CO2 sensor STG3 DLY 2 0h 0 min 5 min 15 ...

Page 33: ... is above expected range ACT STALLED n a n a ACTUATOR STALLED Actuator stopped before reaching commanded position Table 5 illustrates the complete hierarchy your menu parameters may be different depending on your configuration For example if you do not have a DCV CO2 sensor then none of the DCV parameters appear When values are displayed pressing and holding the Y or B button causes the display to...

Page 34: ...ty Sensor 24 Vac Source ACT 2 10 2 10 Vdc Damper Actuator Output 2 10 Vdc ACT COM COM Damper Actuator Output Common ACT 24V 24 Vac Damper Actuator 24 Vac Source Table 7 Economizer Module Right Hand Terminal Blocks Label Type Description Top Right Terminal Block N A n a The first terminal is not used AUX2 I 24 Vac IN Input from Thermostat W1 indicating base unit is in Heat mode damper controls to H...

Page 35: ... 1 AUX1 O E GND Y2 I Y1 I Y1 O C R Y2 O W7220 CONTROLLER W1 BLUE GRAY 1 2 3 4 ECONO ACTUATOR ENTHALPY SENSOR 1 2 a48 9348 Fig 47 Actuator S BUS Economizer Control Configurations Enthalpy Changeover Control Economizer changeover based on outdoor air enthalpy requires an outdoor air enthalpy sensor to replace the OAT sensor The enthalpy sensor is available as a factory installed option or as a field...

Page 36: ...ical cooling energized and HL high limit when a compressor stage is energized Table 8 provides the values for each boundary limit TEMPERATURE ENTHALPY RA TEMP ABSOLUTE HUMIDITY ECONOMIXING AVAILABLE NOT AVAILABLE ES5 ES4 ES3 ES2 ES1 HL DUAL ENTHALPY HIGH LIMIT SINGLE ENTHALPY P2 T RH P1 T RH RA HUM RH C12015 Fig 48 Single Enthalpy Curve and Boundaries Table 8 Single Enthalpy and Dual Enthalpy High...

Page 37: ...Two Speed Fan System Ventilation codes require that the same ventilation rates Vbz and Va expressed as CFM be provided regardless of supply fan speed When the supply fan speed is reduced the internal static pressure in the unit s return plenum also decreases If the same outside air damper position is retained the airflow rate through the OA damper decreases below the Va and Vbz levels To restore v...

Page 38: ...T defines the space CO2 level above which the DCV mode begins to open the outside air damper beyond its VENTMIN ventilation lower limit This setpoint should be a minimum of 100 ppm greater than the outdoor ambient CO2 level to ensure the outside air will be capable of diluting the space CO2 level A typical value for outdoor CO2 is 400 ppm adjust the setpoint DCV SET to 500 ppm if outdoor CO2 level...

Page 39: ...ondition immediately No economizing operation will be permitted until this alarm is cleared Table 10 SAT OAT Sensor Characteristics Deg C Ohms Deg F Ohms 30 415156 20 386130 25 301540 0 193070 20 221210 20 101820 15 163834 32 70200 10 122453 40 55420 5 92382 45 47771 0 70200 50 41258 5 53806 55 35725 10 41561 60 31035 15 32341 65 27069 20 25346 70 23719 25 20000 77 20000 30 15886 80 18473 35 12698...

Page 40: ...and Controlled Ventilation CO2 sensor connected The supply fan speed is included in these tables for reference this is neither an input or output of the W7220 controller Base Unit Controls Base unit includes standard electromechanical controls Staged Air Volume 3 speed supply fan motor with VFD EconoMi erR X with W7220 controller and thermostat or unitary controller that energizes the G terminal i...

Page 41: ...ntrol will modulate the outside air damper open and closed to maintain the unit cooling supply air temperature at setpoint MAT SET default 53_F 12_C Compressor will not run During free cooling operation a supply air temperature SAT above MAT SET will cause the outside air damper to modulate between MIN POS L setpoint and 100 open As SAT decreases and approaches setpoint MA LO SET default 45_F 7_C ...

Page 42: ...re continues to fall and space cooling load is satisfied the thermostat will remove its call for first stage cooling ISC terminal Y1 call is removed The W7220 input Y1 I is removed free cooling mode ends Outside air damper will remain at MIN POS L if supply fan remains in operation CONT FAN or to closed if supply fan stops AUTO FAN Should 100 outside air and second stage cooling Compressor 1 opera...

Page 43: ...nfiguration involves stepping through three menus and enabling required functions and re selecting setpoints to meet project requirements The menus used are SYSTEM SETUP ADV SETUP and SETPOINTS Obtain a copy of the project control specifications before starting setup and configuration process NOTE W7220 will be in the set up mode for the first 60 minutes after powered If a sensor for OA air or S b...

Page 44: ...d fan system are correct Troubleshooting Power Up Delay Upon power up or after a power outage or brownout the W7220 controller module begins a 5 minute power up delay before enabling mechanical cooling Power Loss Outage or Brownout All setpoints and advanced settings are restored after any power loss or interruption NOTE If the power goes below 18 Vac the W7220 controller module assumes a power lo...

Page 45: ...e temperature sensor in the enthalpy sensor In checkout the outdoor damper closes when I command it to open Check the actuator linkage or rotation In the CHECKOUT mode the outdoor damper should drive open or closed with the return air damper having the opposite effect How do I set my minimum position The minimum position is set using the VENTMIN and VENTMAX setup in the SETPOINTS menu VENTMIN is t...

Page 46: ...ntroller for operation of 1 speed or 2 speed indoor fan system See Menu Note 4 on page 33 FAN CFM 5000cfm 100 to 15000 cfm UNIT DESIGN AIRFLOW CFM Enter ONLY if using DCVCAL ENA AUTO The value is found in the Project Submittal documents for the specific RTU AUX OUT NONE NONE ERV EXH2 SYS Select OUTPUT for AUX1 O relay NONE not configured output is not used ERV Energy Recovery Ventilator EXH2 secon...

Page 47: ... CAL 0 0 1 0_F or _C 2 5_F 1 4_C SUPPLY AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration supply air temperature SAT sensor OA T CAL 2 0 3 0_F or _C 2 5_F 1 4_C OUTSIDE AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration outside air temperature OAT sensor OA H CAL 0 RH 10 RH OUTSIDE AIR HUMIDITY CALIBRATION Allows for the op...

Page 48: ...NTMAX H 4 4 V 2 to 10Vdc DCV MAXIMUM DAMPER POSITION AT HIGH SPEED Requires CO2 sensor connected VENTMIN L 3 7 V 2 to 10Vdc DCV MINIMUM DAMPER POSITION AT LOW SPEED Requires CO2 sensor connected VENTMIN H 2 8 V 2 to 10Vdc DCV MINIMUM DAMPER POSITION AT HIGH SPEED Requires CO2 sensor connected ERV OAT SP 32_F 0_C 0 to 50_F 18 to 10_C increment by 1_ ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR TEMP...

Page 49: ...alpha numeric lines All data is displayed on the LCD 1 20 Motor Power 2 0 12KW 0 16HP Setup 1 1 3 2 4 5 C13113 1 Parameter number and name 2 Parameter value 3 Setup number shows the active setup and the edit setup If the same set up acts as both the active and edit set up only that setup number is shown factory setting When the active and edit setup differ both numbers are shown in the display SET...

Page 50: ...al 27 Digital Input 5 12 Terminal 27 Digital Input has coast inverse as default setting This means that the Hand On key will not start the motor if there is no 24V to terminal 27 so be sure to connect terminal 12 to terminal 27 2 Off Reset key Stops the motor off If in alarm mode the alarm will be reset 3 Auto On key The variable frequency drive is controlled either via control terminals or serial...

Page 51: ... power up the LCD displays the Select Language screen The default setting is English To change the language press the OK key and use the Y and B keys to scroll to the desired language and then press OK Off Reset Hand On Alarm Warn On Com OK B a c k Auto On Status Menu Quick Menu Main Menu Select language English 0 English SETUP 1 C13119 Fig 60 Keypad with Power Up Screen Displayed 2 Selecting Regi...

Page 52: ...e Menu key to move the B triangle icon so it is positioned over Main Menu The display show the following 0 Operation Display 1 Load and Motor b Press B Down Arrow once to highlight the bottom row c Press OK the display changes to 1 0 General Settings 1 1 Motor Selection d Press B Down Arrow twice to reach the follow ing display 1 1 Motor Selection 1 2 Motor Data e Press OK the following display ap...

Page 53: ... Stop Adjustments k Press OK the following display appears 1 80 Function at Stop 0 Coast l Press B Down Arrow once the following display appears 1 82 Min Speed for Functio 1 0 Hz m Press OK to highlight the number and then use the Y and B Up and Down Arrow keys to select the number provided in Table 17 Press OK again to set the selected value n Press the Back key once the following display appears...

Page 54: ...elect ed Ramp up Time e Press B Down Arrow once the following display appears 3 42 Ramp 1 Ramp Down Time 3 00s f Press OK again to highlight the bottom row and use the Y and B Up and Down Arrow keys to select 10 00s Press OK again to set the selected Ramp Down Time 9 Setting Limits a Press the Back key until the following display appears 2 Brakes 3 Reference Ramps b Press B Down Arrow once the fol...

Page 55: ...isplay appears 6 Analog In Out 6 1 Analog Input 53 d Press B Down Arrow once to move the high light to the bottom row and then press OK The following display appears 6 10 Terminal 53 Low Voltage 2V e Press B Down Arrow once to move the high light to the bottom row and then press OK The following display appears 6 11 Terminal 53 High Voltage 10V f Press B Down Arrow once to move the high light to t...

Page 56: ...play appears 14 1 Mains On Off 14 2 Reset Functions k Press B Down Arrow twice the following display appears 14 4 Energy Optimising 14 5 Environment l Press OK the following display appears 14 50 RFI Filter 1 On m Press OK to highlight the number in the bracket and use the Y and B Up and Down Arrow keys to select 0 Press OK again to set the selected value 13 To Complete Reprogramming a Press the A...

Page 57: ...8FE654 HK30WA377 131L9864 1 122 10 460 60 4 2 1735 2 0 1 1 0 4 0 66 50 66 50 575V 07 HIGH HD58FE577 HK30WA383 131N0227 1 132 11 575 60 4 9 1710 2 0 1 1 0 4 0 66 50 66 50 Preset Reference cont Ramp Up Time Sec Ramp Down Time Sec Current Limit Terminal 18 Digital Input Terminal 19 Digital Input Terminal 27 Digital Input Terminal 29 Digital Input Terminal 53 Low Voltage Terminal 53 High Voltage Termi...

Page 58: ...03 203 41 40 50 50 43 42 207 207 42 41 50 50 44 43 208 208 46 45 50 50 49 48 212 212 317A 12 0 16 0 33 4 38 5 53 58 60 60 48 53 203 203 58 63 60 70 53 58 207 207 59 64 60 70 54 59 208 208 64 69 70 70 58 63 212 212 318A 18 6 24 8 51 7 59 7 76 85 80 90 69 78 203 203 81 90 90 90 74 82 207 207 82 91 90 100 75 83 208 208 87 96 90 100 79 88 212 212 460 3 60 STD NONE 20 25 20 87 21 25 22 89 22 25 23 89 2...

Page 59: ...0 43 42 207 207 42 42 50 50 44 43 208 208 46 46 50 50 49 48 212 212 317A 12 0 16 0 33 4 38 5 58 58 60 60 48 53 203 203 63 63 70 70 53 58 207 207 64 64 70 70 54 59 208 208 69 69 70 70 58 63 212 212 318A 18 6 24 8 51 7 59 7 85 85 90 90 69 78 203 203 90 90 90 90 74 82 207 207 91 91 100 100 75 83 208 208 96 96 100 100 79 88 212 212 460 3 60 STD NONE 20 25 20 87 21 25 22 89 22 25 23 89 24 25 25 91 319A...

Page 60: ...moke 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 All components necessary for operation are factory provided and mounted The unit is factory configured for immediate smoke detector shutdown operation additional wiri...

Page 61: ...ure the belt span length as shown in Fig 63 Calculate the required deflection by multiplying the belt span length by 1 64 For example if the belt span length is 32 inches 32 x 1 64 1 2 inch deflection Belt Force Deflection Method Check the belt tension with a spring force belt force deflection gauge 1 Place a straightedge along the belt between the two pulleys Measure the distance between the moto...

Page 62: ...the unit Refer to the unit s Service Manual for detailed Pre Start and Start Up instructions Download the latest versions from HVAC Partners www hvacpartners com ECarrier Corporation 2017 Edition Date 06 17 618 Printed in U S A Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50LC 7 04SI Replaces 50LC 7 03SI ...

Page 63: ...OR AIR INLET SCREENS ARE IN PLACE j VERIFY THAT UNIT IS LEVEL j CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND VERIFY SETSCREW IS TIGHT j VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED j VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION j VERIFY INSTALLATION OF THERMOSTAT II START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L3 L1 COMPRESSOR...

Page 64: ...ESSURE 5 TO 7 PSI EXPECTED j B DISCHARGE PRESSURE UNCHANGED j C LIQUID TEMPERATURE DROPS TO 50 TO 55_F RANGE j D LSV SOLENOID ENERGIZED VALVE CLOSES j 6 SWITCH UNIT TO DEHUMID REHEAT BY OPENING Y1 OBSERVE j A SUCTION PRESSURE INCREASES TO NORMAL COOLING LEVEL j B DISCHARGE PRESSURE DECREASES 35 TO 50 PSI j C LIQUID TEMPERATURE RETURNS TO NORMAL COOLING LEVEL j D LIQUID SOLENOID VALVE LSV ENERGIZED...

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