Carrier WeatherExpert Puron 50LC 08 Series Installation Instructions Manual
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Carrier WeatherExpert Puron 50LC 08 Series Installation Instructions Manual

Single package rooftop cooling only r-410a refrigerant
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NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . 8
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit Installation . . . 8
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . 9
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . 11
• FOR UNITS WITH ACCESSORY OR OPTIONAL
ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 11
• POSITIONING ON CURB
Step 7 — Convert to Horizontal and Connect
Ductwork (when required) . . . . . . . . . . . . . . . . . . 12
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 13
• ECONOMIZER HOOD REMOVAL AND SETUP –
FACTORY OPTION
• ECONOMIZER HOOD ASSEMBLY
Step 9 — Install External Condensate Trap and
Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 10 — Make Electrical Connections . . . . . . . . . 15
• FIELD POWER SUPPLY
• ALL UNITS
• UNITS WITHOUT FACTORY-INSTALLED NON-
FUSED DISCONNECT OR HACR
• UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT OR HACR
• 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Single Point Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . 29
• HEATER AND SUPPLEMENTARY FUSES
• HEATER LOW-VOLTAGE CONTROL CONNECTIONS
Humidi-MiZer® System Control Connections . . . . 30
• HUMIDI-MIZER SYSTEM – SPACE RH CONTROLLER
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500283-01
Installation Instructions
Printed in U.S.A.
Form 50LC-8-12-06SI
Single Package Rooftop Cooling Only
with Puron
RTU Open Controller (Factory-Installed Option) . . 30
SystemVu™ Controller (Factory-Installed Option) .30
Integrated Staging Control (ISC) Board . . . . . . . . . .32
• ISC BOARD – SEQUENCE OF OPERATION
EconoMi$er® X (Factory Option) . . . . . . . . . . . . . . .34
• SYSTEM COMPONENTS
• SPECIFICATIONS
• INPUTS
• OUTPUTS
• ENVIRONMENTAL
• ECONOMIZER MODULE WIRING DETAILS
• INTERFACE OVERVIEW
• SETUP AND CONFIGURATION
• ENTHALPY SETTINGS
• TWO-SPEED FAN OPERATION
• CHECKOUT
• TROUBLESHOOTING
Staged Air Volume (SAV™) with Variable Frequency
Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Multi-Speed VFD Display Kit (Field-Installed
Accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
• ALPHA NUMERIC DISPLAY
• MENU KEY
• NAVIGATION KEYS AND STATUS LEDS
• OPERATION KEYS AND LEDS
• CONNECTING THE KEYPAD TO THE VFD
• PROGRAM THE VFD FOR 3 DISCRETE INDOOR FAN
SPEEDS
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
• COMPLETING INSTALLATION OF RETURN AIR
SMOKE SENSOR
• ADDITIONAL APPLICATION DATA
Step 11 — Adjust Factory-Installed Options . . . . . . 60
• SMOKE DETECTORS
Step 12 — Install Accessories . . . . . . . . . . . . . . . . .60
Step 13 — Check Belt Tension . . . . . . . . . . . . . . . . .60
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .60
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1
SAFETY CONSIDERATIONS
Improper
installation,
maintenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloths for brazing operations and have a fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult local
building codes and appropriate national electrical codes (in USA,
Pg 1
WeatherExpert
50LC 08-12
(R-410A) Refrigerant
®
adjustment,
alteration,
5-2020
Replaces: 50LC-8-12-05SI
®
service,

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Summary of Contents for Carrier WeatherExpert Puron 50LC 08 Series

  • Page 1 WeatherExpert ® 50LC 08-12 Single Package Rooftop Cooling Only with Puron (R-410A) Refrigerant ® Installation Instructions NOTE: Read the entire instruction manual before starting the RTU Open Controller (Factory-Installed Option) . . 30 installation. SystemVu™ Controller (Factory-Installed Option) .30 SAFETY CONSIDERATIONS ....1 Integrated Staging Control (ISC) Board .

  • Page 2: Electrical Shock Hazard

    ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA C22.1) for special requirements. WARNING It is important to recognize safety information. This is the safety- alert symbol . When you see this symbol on the unit and in PERSONAL INJURY AND ENVIRONMENTAL instructions or manuals, be alert to the potential for personal HAZARD injury.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Packaging 50 - Electric Cooling/Heating 0 = Standard Packaged Rooftop 1 = LTL ® Electrical Options Model Series - WeatherExpert A = None LC - Ultra High Efficiency B = HACR Circuit Breaker C = Non-Fused Disconnect Heat Options...
  • Page 4 Fig. 2 — Unit Dimensional Drawing, Size 08 Unit...
  • Page 5 Fig. 2 — Unit Dimensional Drawing, Size 08 Unit (cont)
  • Page 6 Fig. 3 — Unit Dimensional Drawing, Size 09 and 12 Units...
  • Page 7 Fig. 3 — Unit Dimensional Drawing, Size 09 and 12 (cont)

  • Page 8: Installation

    LOCATION DIMENSION CONDITION 48-in. (1219 mm) Unit disconnect is mounted on panel 18-in. (457 mm) No disconnect, convenience outlet option 18-in. (457 mm) Recommended service clearance 12-in. (305 mm) Minimum clearance 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36-in.

  • Page 9: Curb-Mounted Installation

    CURB-MOUNTED INSTALLATION NOTE: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown 1. Install curb in Fig. 7. Improperly applied gasket can also result in air leaks and 2.
  • Page 10 Fig. 6 — Roof Curb Details, Size 08-12 Units...

  • Page 11: For Units With Accessory Or Optional Elec- Tric Heaters

    Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not CAUTION exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg (112 Pa) without economizer. PROPERTY DAMAGE HAZARD For vertical ducted applications, secure all ducts to roof curb and Failure to follow this caution may result in damage to roofing building structure.

  • Page 12: Positioning On Curb

    PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB. 914 - 1371 “B” ( 36” - 54” ) “C” DUCT END DETAIL “A” “A” SEE DETAIL “A” DIMENSIONS MAX WEIGHT UNIT 2280 1034 2945 1600 59.5 1510 50LC*008 2285 1037...

  • Page 13: Economizer Hood Removal And Setup - Fac- Tory Option

    Step 8 — Install Outside Air Hood REMOVABLE HORIZONTAL RETURN DUCT OPENING COVER ECONOMIZER HOOD REMOVAL AND SETUP – FAC- TORY OPTION 1. The hood is shipped in knock-down form and located in the return air compartment. It is attached to the econo- mizer using two plastic tie-wraps.

  • Page 14: Economizer Hood Assembly

    ECONOMIZER HOOD ASSEMBLY NOTE: If the power exhaust accessory is to be installed on the PANEL unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

  • Page 15: Electric Shock Hazard

    The piping for the condensate drain and external trap can be com- pleted after the unit is in place. See Fig. 19. All units must have an external trap for condensate drainage. In- stall a trap at least 4-in. (102 mm) deep and protect against freeze-up.
  • Page 16 Fig. 23 — 50LC 08-12 Electromechanical Control Wiring Diagram (208/230-v, 460-v, 575-v Units)
  • Page 17 Fig. 24 — 50LC 08-12 RTU Open Control Wiring Diagram (208/230-v, 460-v, 575-v Units)
  • Page 18 Fig. 25 — 50LC 08-12 SystemVu™ Control Wiring Diagram (208/230-v, 460-v, 575-v Units)
  • Page 19 Fig. 26 — 50LC 08-12 Power Wiring Diagram, Electromechanical and RTU Open Controls (208/230-v Units)
  • Page 20 Fig. 27 — 50LC 08-12 Power Wiring Diagram, Electromechanical and RTU Open Controls (460-v, 575-v Units)
  • Page 21 Fig. 28 — 50LC 08-12 Power Wiring Diagram, SystemVu™ Controls (208/230-v Units)
  • Page 22 Fig. 29 — 50LC 08-12 Power Wiring Diagram, SystemVu™ Controls (460-v, 575-v Units)
  • Page 23 Units Without Single Point Box, Disconnect or HACR Option Equip GR Lug Disconnect Ground (GR) 208/230-3-60 460-3-60 575-3-60 Units With Disconnect or HACR Option Fig. 30 — Mounting Position for Field Disconnects (over 100A) Optional Disconnect Switch Factory or HACR Wiring Ground (GR)

  • Page 24: Fire Hazard

    Operation on improper line voltage or excessive phase imbal- ALUMINUM ance constitutes abuse and may cause damage to electrical WIRE components. Such operation would invalidate any applicable Carrier warranty. Fig. 33 — Disconnect Switch and Unit ALL UNITS UNITS WITHOUT FACTORY-INSTALLED NON-FUSED DISCONNECT OR HACR All field wiring must comply with the NEC and local requirements.

  • Page 25: Units With Factory-Installed Non-Fused Dis- Connect Or Hacr

    UNITS WITH FACTORY-INSTALLED NON-FUSED DIS- CONNECT OR HACR The factory-installed option disconnect switch is located in a weatherproof enclosure located under the main control box (see Fig. 34 and Fig. 36). The manual switch handle is shipped in the disconnect or HACR enclosure. Assemble the shaft and handle to the switch or HACR at this point.

  • Page 26: Convenience Outlets

    Two types of convenience outlets are offered on the 50LC 08-12 units: non-powered and unit-powered. Both types provide a 125-v GFCI (ground-fault circuit-interrupter) duplex receptacle rated at 15-A behind a hinged waterproof access cover, located on the pan- el beneath the control box. See Fig. 38. PWD-CO FUSE SWITCH...
  • Page 27 WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death. Using unit-mounted convenience outlets: Units with unit- mounted convenience outlet circuits will often require that two disconnects be opened to de-energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de-energization is confirmed.

  • Page 28: Factory-Option Thru-Base Connections

    CONNECTOR FIELD CONTROL WIRING The 50LC unit requires an external temperature control device such as a thermostat (field-supplied). THERMOSTAT Install a Carrier-approved accessory thermostat according to in- 1-1/2-in. ELECTRICAL BULKHEAD stallation instructions included with the accessory. For complete CONNECTOR economizer function and 3-stage compressor operation, select a three-stage cooling thermostat.

  • Page 29: Heat Anticipator Settings

    HEAT ANTICIPATOR SETTINGS Typical Integrated Staging Control Set heat anticipator settings at 0.14 amp for the first stage and 0.14 Thermostat (ISC) Board or amp for second-stage heating, when available. Connections SystemVu Controller Electric Heaters 50LC 08-12 units may be equipped with factory or field-installed electric heaters.

  • Page 30: Heater And Supplementary Fuses

    MOUNTING a Wall Mount Space Humidity Sensor (33ZCSENSRH-01), or a SCREWS Duct Mount Humidity Sensor (33ZCSENDRH-01). POWER To connect the Carrier humidistat (HL38MG029) (See Fig. 50) WIRES 1. Route the humidistat 2-conductor cable (field-supplied) FOAM BUSHING through the bushing in the unit’s louvered end panel (see HEATER Fig.
  • Page 31 Humidistat Fig. 51 — Typical Humidi-MiZer Adaptive Dehumidification System Humidistat Wiring ®...
  • Page 32 Integrated Staging Control (ISC) Board Indoor Fan Power Phase Phase Auxilary Condensate Economizer “On” Status Board Plug Monitor Monitor Shutdown Overflow Relay Relay Remote Shutdown Control Smoke Shutdown Smoke Alarm Control Occupancy Low Ambient Outdoor Fan Control Status Code LEDs Compressors Reheat Thermostat...

  • Page 33: Isc Board - Sequence Of Operation

    ISC BOARD – SEQUENCE OF OPERATION Thermostat Speed Speed General First Stage The Carrier Integrated Staging Control (ISC) is intended for use Cooling (Y1) (700 rpm) with a standard thermostat or direct digital controls (DDC) capa- Second Stage Medium Medium ble of three cooling stages.
  • Page 34 demand for cooling, the outdoor-air damper will maintain its cur- ODF RELAY rent position, compressor C2 will run and the outdoor fan will run at medium speed. The VFD-controlled indoor fan will operate at high speed regardless of the cooling demand. If the increase in cooling capacity causes the mixed-air tempera- ture to drop below 45°F (7°C), the outdoor-air damper will return to the minimum position.

  • Page 35: Specifications

    The W7220 economizer module automatically detects sensors by Return Air (RA) bus sensor can be added to the system for dif- polling to determine which sensors are present. If a sensor loses ferential enthalpy or dry bulb changeover. For differential dry communications after it has been detected, the W7220 economizer bulb changeover, a 20k ohm sensor is required in the OA and a controller indicates a device fail error on its LCD.
  • Page 36 Table 7 — Economizer Module (Right Hand Terminal Blocks) LABEL TYPE DESCRIPTION Top Right Terminal Blocks AUX2 I 24 vac IN The first terminal is not used. Shut Down (SD) or HEAT (W) AUX2- Conventional only 24 vac IN Heat Pump Changeover (O-B) in Heat Pump mode.

  • Page 37: Interface Overview

    To use the keypad when working with menus: Table 8 — HH57AC081 Sensor Wiring Terminations • Press the ▲ (Up arrow) button to move to the previous menu. TERMINAL TYPE DESCRIPTION • Press the ▼ (Down arrow) button to move to the next NUMBER LABEL menu.

  • Page 38: Setup And Configuration

    NOTE: Some parameters in the menus use the letters MA or The setup process uses a hierarchical menu structure that is easy to MAT, indicating a mixed air temperature sensor location before use. Press the ▲ and ▼ arrow buttons to move forward and back- the cooling coil.
  • Page 39 Table 10 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † DEMAND CONTROLLED VENTILATION STATUS DCV STATUS ON/OFF Displays ON if above set point and OFF if below set point, and ONLY if a CO sensor is connected.
  • Page 40 Table 10 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † DCV MINIMUM DAMPER POSITION 2 to 10 vdc or 100 Displays only if a CO sensor is connected. Used for Va to 9990 cfm (ventilation min cfm) set point.
  • Page 41 Table 10 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † COOLING STAGE 3 DELAY 0 min, 5 min, 15 Delay after stage 2 cool has been active. Turns on second stage min, then 15 min of cooling when economizer is first stage call and mechanical STG3 DLY...
  • Page 42 Table 10 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † RA SYLK T ERR RETURN AIR S-BUS SENSOR ERROR Return air enthalpy sensor has failed or become disconnected - RA SYLK H ERR check wiring, then replace sensor if the alarm continues.
  • Page 43 Table 11 — Damper Minimum Position Settings and Readings on Checkout Menu DEMAND CONTROLLED VENTILATION FAN SPEED SETPOINTS CHECKOUT SENSOR) MIN POS VMAX–HS MIN POS H VMAX–HS MIN POS L VMAX–LS VENT MIN VMAX–HS VENT MAX VMAX–HS VENT MIN H VMAX–HS VENT MAX H VMAX–LS...
  • Page 44 Table 14 — Enthalpy Operation without DCV (CO Sensor) — 1 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED VENTILATION (DCV) ECONOMIZE High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed High 24-v/On...
  • Page 45 Table 17 — Dry Bulb Operation With DCV (CO Sensor) — 2 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE 0v/Off 0v/Off VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed...

  • Page 46: Enthalpy Settings

    Table 19 — Enthalpy Operation With DCV (CO Sensor) — 2 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE 0v/Off 0v/Off VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed 0v/Off...

  • Page 47: Troubleshooting

    ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 60 — Single Enthalpy Curve Boundaries Table 21 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY...
  • Page 48 Clearing Alarms Once the alarm has been identified and the cause has been re- moved (e.g. replaced faulty sensor) the alarm can be cleared from the display. To clear an alarm, perform the following: 1. Navigate to the desired alarm. 2.

  • Page 49: Alphanumeric Display

    Com. 1-20 Motor Power ALPHA NUMERIC [2] 0.12KW-0.16HP DISPLAY Setup 1 Warn. Status Quick Main Alarm MENU KEY Menu Menu Menu Com. LED: Flashes when bus communications is Com. communicating. Green LED/On: Control selection is working. NAVIGATION KEYS Yellow LED/Warn.: Indicates a warning. Flashing Red LED/Alarm: Indicates an alarm.

  • Page 50: Program The Vfd For 3 Discrete Indoor Fan Speeds

    Male Connector - connect to VFD Front Panel Fig. 67 — Align Bottom of VFD Keypad with Opening in VFD Front Panel Female Connector - connect to back of VFD Remote Keypad Fig. 69 — VFD Remote Keypad Cable PROGRAM THE VFD FOR 3 DISCRETE INDOOR FAN SPEEDS IMPORTANT: 50LC units are programmed at the factory for 3 discrete indoor fan speeds.
  • Page 51 3. Clearing Alarm 060: External Interlock: a. Press the Menu key twice to position the ▼ (triangle icon) over Main Menu; the display changes to: Select language English 0—** Operation / Display [0] English 1—** Load and Motor SETUP 1 b.
  • Page 52 d. Press ▼ (Down Arrow) twice to reach the following dis- play: 1-71 Start Delay 2.0s f. Press OK to highlight the number and then use the ▲ 1—1* Motor Selection and ▼ (Up and Down Arrow) keys to select the number 1—2* Motor Data provided in Tables 22-24.
  • Page 53 c. Press OK, the following display appears: 3-42 Ramp 1 Ramp Down Time 3.00s 3—0* Reference Limits f. Press OK again to highlight the bottom row and use the 3—1* References ▲ and ▼ (Up and Down Arrow) keys to select 10.00s. d.
  • Page 54 d. Press ▼ (Down Arrow) once to move the highlight to b. Press ▼ (Down Arrow) until the following display the bottom row and then press OK. The following dis- appears: play appears: 13—** Smart Logic 5-10 Terminal 18 Digital In… 14—** Special Functions [8] Start c.
  • Page 55 SPEED (Hz) AMPS) (RPM) Motor Motor Voltage 0-03 0-06 1-20 1-22 1-23 1-24 1-25 Option Carrier P/N Mfr P/N 208/230V HD56FR233 HK30WA370 131L9795 [102] 1695 460V HD56FR463 HK30WA376 131L9863 [122] 1690 575V HD56FR579 HK30WA382 131N0225 [132] 1690 208/230V HD56FR233 HK30WA370 131L9795...
  • Page 56 SPEED (Hz) AMPS) (RPM) Motor Voltage Motor P/N 0-03 0-06 1-20 1-22 1-23 1-24 1-25 Option Carrier P/N Mfr P/N 208/230V HD56FR233 HK30WA370 131L9795 [102] 1695 460V HD56FR463 HK30WA376 131L9863 [122] 1690 575V HD56FR579 HK30WA382 131N0225 [132] 1690 208/230V HD56FR233 HK30WA370 131L9795...
  • Page 57 Table 23 — VFD Unit Parameters - 50LC 09 Units (cont) MIN SPEED START MOTOR FLYING PRESET DELAY THERMAL START FUNCTION REFERENCE (SEC) PROTECTION (Hz) Motor Voltage 1-71 1-73 1-82 1-90 3-10 [0] 3-10 [1] 3-10 [2] 3-10 [3] 3-10 [4] 3-10 [5] 3-10 [6] 3-10 [7] Option 208/230V 66.50% 66.50%...
  • Page 58 SPEED (Hz) AMPS) (RPM) Motor Voltage Motor P/N 0-03 0-06 1-20 1-22 1-23 1-24 1-25 Option Carrier P/N Mfr P/N 208/230V HD56FE653 HK30WA371 131L9796 [102] [10] 1680 460V HD56FE653 HK30WA377 131L9864 [122] [10] 1680 575V HD56FE577 HK30WA382 131N0225 [132] [11]...

  • Page 59: Additional Application Data

    ADDITIONAL APPLICATION DATA Smoke Detectors Smoke detectors are available as factory-installed options on Refer to Factory-Installed Smoke Detectors for Small and Medi- 50LC 08-12 units. Smoke detectors may be specified for supply um Rooftop Units 2 to 25 Tons for discussions on additional con- air only, for return air without or with economizer, or in combi- trol features of these smoke detectors including multiple unit coor- nation of supply air and return air.

  • Page 60: Smoke Detectors

    Step 11 — Adjust Factory-Installed Options BELT DEFLECTION FORCE - SEE TABLE 1 SMOKE DETECTORS Smoke detector(s) will be connected at the Integrated Staging DEFLECTION = BELT SPAN Control (ISC) board, at terminals marked “Smoke Shutdown”. Remove jumper JMP 3 when ready to energize unit. STRAIGHT EDGE Step 12 —...
  • Page 62 © 2020 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500283-01 Printed in U.S.A. Form 50LC-8-12-06SI Pg 62 5-2020 Replaces: 50LC-8-12-05SI...

  • Page 63: Preliminary Information

    START-UP CHECKLIST FOR 50LC SINGLE PACKAGE ROOFTOP COOLING ONLY (Remove and Store in Job File) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preced- ing sections of this Installation Instruction document.

  • Page 64: Humidi-Mizer

    10. Restore set-points for thermostat and humidistat (Y/N) _____ REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS. © 2020 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500283-01 Printed in U.S.A.

This manual is also suitable for:

Weatherexpert puron 50lc 09 seriesWeatherexpert puron 50lc 12 seriesWeatherexpert 50lc series

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