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Carrier WeatherMaker 50FEQ 14 Series Installation Instructions Manual
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Carrier WeatherMaker 50FEQ 14 Series Installation Instructions Manual

Carrier WeatherMaker 50FEQ 14 Series Installation Instructions Manual

Single package rooftop heat pump with puron advance (r-454b) refrigerant and ecoblue fan technology
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . 6
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . 7
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . 7
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . 9
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 10
Trap and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Leak Dissipation System . . . . . . . . . . . . . . . . . . . . . 25
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500425-01
Installation Instructions
Printed in U.S.A.
Form No. 50FEQ-14-01SI
Single Package Rooftop Heat Pump
with Puron Advance™ (R-454B) Refrigerant
and EcoBlue
Page
EconomizerONE (Factory Option) . . . . . . . . . . . . . .28
Step 12 - Install Accessories . . . . . . . . . . . . . . . . .50
Step 13 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .50
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .53
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
It is important to recognize safety information. This is the
safety-alert symbol
in instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
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.
®
WeatherMaker
™
Fan Technology
. When you see this symbol on the unit and
Pg 1
4-24
50FEQ*14
Replaces: New

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Summary of Contents for Carrier WeatherMaker 50FEQ 14 Series

  • Page 1: Table Of Contents

    ® WeatherMaker 50FEQ*14 Single Package Rooftop Heat Pump with Puron Advance™ (R-454B) Refrigerant ™ and EcoBlue Fan Technology Installation Instructions • LEAK DISSIPATION SYSTEM SELF-TEST CONTENTS • TROUBLESHOOTING Page EconomizerONE (Factory Option) ....28 SAFETY CONSIDERATIONS .

  • Page 2: Electrical Shock Hazard

    DANGER AVERTISSEMENT ELECTRICAL SHOCK HAZARD Soyez prudent lors de l’entretien des bornes du compresseur. Les anomalies du système ou du compresseur peuvent déloger Failure to follow this warning will result in personal injury or les bornes, permettant à l’huile et au réfrigérant de s’évacuer death.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Type Packaging 50 – Cooling with Electric Heat 0 = Standard Model Series Electrical Options FE – Entry Tier Puron Advance™ Rooftop A = None C = Non-Fused Disconnect (NFDC) D = Thru-the-Base Connections (TTB) Heat Size F = NFDC + TTB...
  • Page 4 Fig. 2 — 50FEQ 14 Unit Dimensional Drawing...
  • Page 5 Fig. 2 — 50FEQ*14 Unit Dimensional Drawing (cont)

  • Page 6: Installation

    DIMENSION LOCATION CONDITION in. (mm) 48 (1219) Unit disconnect is mounted on panel. 18 (457) No disconnect, convenience outlet option. 18 (457) Recommended service clearance. 12 (305) Minimum clearance. 42 (1067) Surface behind servicer is grounded (e.g., metal, masonry wall). 36 (914) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass).

  • Page 7: Step 2 - Plan For Sequence Of Unit Installation

    in Fig. 5. Improperly applied gasket can also result in air leaks and Step 2 — Plan for Sequence of Unit Installation poor unit performance. The support method used for this unit will dictate different Install insulation, cant strips, roofing felt, and counter flashing as sequences for the steps of unit installation.
  • Page 8 Fig. 5 — 50FEQ*14 Roof Curb Details...

  • Page 9: Step 6 - Rig And Place Unit

    Place All Gasket in Place Before Placing Unit on Roof Curb. (914-1371) “B” 36”-54” “C” Detail “A” Duct End “A” “A” See Detail “A” DIMENSIONS MAX WEIGHT UNIT 50FEQ*14 1807 116.0 2945 57.0 1450 59.5 1510 NOTE(S): 1. Dimensions in ( ) are in millimeters. 2.

  • Page 10: Step 7 - Convert To Horizontal And Connect

    Step 7 — Convert to Horizontal and Connect Unit is shipped in the vertical duct configuration. Unit without factory-installed economizer or return air smoke detector option may be field-converted to horizontal ducted configuration using accessory CRDUCTCV002A00. To convert to horizontal config- uration, remove screws from side duct opening covers and remove Remove covers.

  • Page 11: Step 9 - Install External Condensate

    To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 1/2 in. square socket drive extension) and install it in the side drain connection. Side The piping for the condensate drain and external trap can be com- Panel pleted after the unit is in place.
  • Page 12 Field Power Supply For those units without through-the-curb power, conduit must be used to route the main power from the condenser end, via the power entry in the corner post of the unit (see Fig. 16-18) to either the factory option disconnect or the bottom of the control box. A 1 in.

  • Page 13: Fire Hazard

    Disconnect factory test leads; discard. electrical components. Such operation would invalidate any applicable Carrier warranty. Fig. 22 — Power Wiring Connections TEST LEADS — Unit may be equipped with short leads (pig- UNITS WITH FACTORY-INSTALLED NON-FUSED ...

  • Page 14: Units Without Factory-Installed Non-Fused Disconnect

    Insert the shaft with the cross pin on the top of the shaft in UNITS WITHOUT FACTORY-INSTALLED NON-FUSED the horizontal position. DISCONNECT Measure the tip of the shaft to the top surface of the pointer When installing units, provide a disconnect switch per NEC to be 3.75 in.

  • Page 15: All Units

    heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten). Mount the weatherproof cover to the backing plate as shown in Fig. 26. Remove two slot fillers in the bottom of the cover to per- mit service tool cords to exit the cover.
  • Page 16 The 50FEQ*14 requires an external temperature control device. Connector This device can be a thermostat (field-supplied) or a SystemVu™ controller (available as factory-installed option for use on a Carrier Comfort Network or as a stand-alone control). All field added ®...

  • Page 17: Commercial Defrost Control

    Unit without Thru-Base Connection Kit Cooling (one compressor runs), Stage 2 Cooling (both compres- sors run) or Stage 1 Heating (both compressors run). Pass the thermostat control wires through the bushing on the unit end panel. Route the wire through the snap-in wire tie and up to the web bushing near the control box.

  • Page 18: Electric Heaters

    Table 3 — 50FEQ Defrost Board I/O and Jumper Configurations POINT NAME TYPE OF I/O CONNECTION PIN NUMBER UNIT CONNECTION NOTE INPUTS G Fan DI, 24 vac P2-3 CTB-G Y1 Cool 1 DI, 24 vac P2-5 CTB-Y1 Y2 Cool 2 DI, 24 vac P2-4 CTB-Y2...
  • Page 19 Single Center Vane Axial Point Box Post Indoor Fan System Control Box Non-Fused Disconnect* Manual Reset Convenience Limit Switch Outlet* Heater Mounting Bracket Control Wire Heater * Factory-Installed Option. Terminal Block (Cover Removed) Fig. 37 — Component Location Heater Module Fig.

  • Page 20: Single Point Boxes And Supplementary Fuses

    SINGLE POINT BOXES AND SUPPLEMENTARY FUSES When the unit MOCP device value exceeds 60-A, unit-mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory single point boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the out- door section.
  • Page 21 Fig. 41 — Typical 50FEQ 14 Control Wiring Diagram, Electro-Mechanical with POL224 Controller, 230, 460, 575-3-60 Unit Shown...
  • Page 22 Fig. 42 — Typical 50FEQ 14 Control Wiring Diagram, SystemVu™ Controller, 230, 460, 575-3-60 Unit Shown...
  • Page 23 Fig. 43 — Typical 50FEQ Power Wiring Diagram — 208/230, 460-3-60 Unit Shown...
  • Page 24 Fig. 44 — Typical 50FEQ 14 Power Wiring Diagram — 575-3-60 Unit Shown...

  • Page 25: Leak Dissipation System

    SEQUENCE OF OPERATION Leak Dissipation System 50FEQ units use R-454B refrigerant. These units are equipped The control functions as an R454B refrigerant dissipation system. with a factory installed R-454B leak dissipation system to ensure If the refrigerant detection sensor sends a signal indicating a re- safe operation in the event of a refrigerant leak.
  • Page 26 Detail A Detail B Detail A — Test Button Detail B — Status LED Fig. 48 — Dissipation Control Board — shown without dust cover Press the Test button on the dissipation system control board to en- Table 6 — Minimum Dissipation Air Flows sure proper dissipation system operation under each test condition MINIMUM DISSIPATION AIR FLOW (cfm) listed below.

  • Page 27: Troubleshooting

    TROUBLESHOOTING For all flash codes, first try power cycling the system to remove the code. No Power Verify the wiring to/from pins 1 and 8 on the power harness plug. Check the 24V system wiring from the transformer. See Table 8 for details on the operating status and troubleshooting of the Dissipation system for the various flash codes.

  • Page 28: Economizerone (Factory Option)

    LED Indication EconomizerONE (Factory Option) NOTE: If different faulty events occur at the same time, the ECONOMIZER SETTINGS sensor/DAC LED lights up following this priority: Red  Interface Overview Yellow  Off. For example, if there is a humidity sensor error and air temperature failure at the same time, the sensor LED EconomizerONE turns red rather than yellow.
  • Page 29 Table 9 — LED Indication FREE SENSOR Power STATUS COOLING DAC LED Yellow Yellow Yellow Commissioning mode Blinking Blinking Blinking Power start-up Yellow On Yellow On Yellow On Free cooling is running Green On — — Free cooling is available Green —...
  • Page 30 Table 10 — Free Cooling Functions CONTROL MODE SENSORS USED ENABLE FREE COOLING? The outside air dry bulb temperature is compared with the set temperature OA (Outside Air) temperature sensor Control Mode 1 shutoff set point. • Fixed Dry Bulb If the outside air dry bulb temperature is below the temperature shutoff set MA (Mixed Air) temperature sensor point, then the outside air is used to meet all or part of the cooling demand.
  • Page 31 Table 11 — 1 and 2-Stage Cooling Stage I/O Logic Table 14 — Different Fan Speeds with Different Configured Outputs ECONOMIZER COOLING COOLING CONDITION MET STAGE 1 STAGE 2 FAN TYPE 1-SPEED COOLING 2-STAGE COOLING • Spd H (regardless of •...
  • Page 32 Table 16 — Different Damper Position Setting with Different Configured Outputs (DCV is Enabled) FAN TYPE 1-STAGE COOLING 2-STAGE COOLING • 2VENTMIN H to 2VENTMAX H (regardless of • 2VENTMIN H to 2VENTMAX H (regardless of 1-SPEED FAN cooling demand, OCC=Yes) cooling demand, OCC=Yes) 2VENTMIN L to 2VENTMAX L ...
  • Page 33 • If Exhaust Fan 2 is connected and configured, then Fault Detection and Diagnostics Exhaust Fan 2 parameter group (L, M, and H) is available, The economizer controller can detect and diagnose free cooling depending on fan configuration. faults, sensor operation faults, and damper modulating faults. It •...

  • Page 34: Wiring

    WIRING WARNING Failure to follow this caution may result in damage to equipment. Be sure to allow enough time for compressor startup and shutdown between checkout tests so that the compressors do not short-cycle.  Mounting Devices Connected to the Economizer Controller Devices like damper actuators, sensors (temperature sensor, hu- midity sensor, combination temperature and humidity sensor, CO...
  • Page 35 Table 18 — Economizer Control Wiring Settings LABEL TYPE DESCRIPTION RS485 Modbus A Line A RS485 Modbus B Line B ¬ GND_ISO Earth Ground Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor Mixed or Discharge Air Temperature Sensor Common Type II NTC 10K or 0-10 vdc Outside Air Temperature Sensor 0-10 vdc or 4-20mA...
  • Page 36 Connecting Peripheral Devices to the Economizer Controller See Fig. 57-61 for wiring details. • Outside Air: Connect to the Mixed or Discharge Air Temperature Sensor OAT and COM terminals of the Outside Air Temperature Sensor device. • Return Air (Differential): Return Air Temperature Sensor Connect to the RAT and S-COM...
  • Page 37 • Outside Combination Temperature/ Humidity: Connect Combo Temperature and Humidity Sensor to the OAT, COM, and OAH terminals of the device. • Combo Temperature and Humidity Sensor Return Combination Temperature/ Humidity: Connect to the RAT, S-COM, and RAH terminals of the device. Fig.

  • Page 38: Setup And Configuration

    SETUP AND CONFIGURATION NOTE: Parameters and display menus may display differently/dynamically if different applications are config- ured. See Tables 19-26. IMPORTANT: Before setup and configuration, it is recom- mended to obtain some location-based values, such as shutoff points, or utilize the location services in the Climatix ™...
  • Page 39 Table 19 — Status Display PARAMETER DESCRIPTION VALUE 1FREECOOL Indicates if the system can use outdoor air for free cooling. 1ECON ENAB Indicates if outdoor air is being used for the first stage of cooling. Indicates if the space is occupied. If users choose ALWAYS for 6OCC when configuring I/Os, the parameter value is YES;...
  • Page 40 Table 20 — Parameter Settings — Basic PARAMETER DESCRIPTION RANGE DEFAULT Temperature shutoff set point can be obtained automatically if a smartphone or tablet is connected to the network provided by a Wi-Fi/WLAN stick 2 TEMP OFF plugged into the Economizer Controller and the mobile application is 48...80°F;...
  • Page 41 Table 21 — Parameter Settings — Advanced PARAMETER DESCRIPTION VALUE/RANGE DEFAULT 3FREEZE POS Anti-freeze protection damper position (closed or minimum). 3SD ACT POS Damper position during shutdown (open or closed). MAT sensor location: • Choose MAT if the sensor is installed before the DX (Direct Expansion) coil. 3DIF T LOC •...
  • Page 42 Table 22 — Parameter Settings — I/O Configurations (cont) PARAMETER DESCRIPTION VALUE DEFAULT Choose ACT FB if feedback signal is available from the connected damper ACT FB 6AUX-AI2 ACT FB actuator. Otherwise, choose NONE. NONE Choose “COOL 2” if Cooling Stage 2 is available (another compressor is COOL 2 6Y2O COOL 2...

  • Page 43: Installing Optional Hh57Lw001 Single Outside Air Enthalpy Sensor

    Table 25 — Enter Running State PARAMETER DESCRIPTION 8RUN STATE Change to Running State. Press Enter to confirm the change. 8ENTER RUN? Confirm the change to Running State. Perform factory reset. Press Enter to confirm the reset. (This action resets the controller 8FACTORY DEF password to default: OneBT.) 8DEF CONFIRM?
  • Page 44 Fig. 62 — HH57LW001 Dimensional, Connection and Switching Information Fig. 63 — HH79NZ039 Dry Bulb and Mixed Air Sensor Wiring Economizer Actuator Outside Air (this end) Damper Wiring Harness Return Air Damper Fig. 64 — EconomizerONE System Component Locations Fig. 65 — California Title 24 Zones...
  • Page 45 U.S. and Canada I-Codes / ASHRAE Zones Climate Zone 1 Climate Zone 5 and Marine Climate Zone 2 Climate Zone 6 Climate Zone 3 Climate Zone 7 and 8 Climate Zone 4 (Except Marine) Fig. 66 — U.S. and Canada Climate Zones Table 27 —...
  • Page 46 Economizers are shipped standard with an HH79NZ039 outside Table 28 — California Title 24 Regional High Limit air dry bulb sensor (refer to Fig. 63). System default setting (high Dry Bulb Temperature Settings temp limit) is 63°F (17°C) and has a range of 48°F to 80°F (9°C to REQUIRED HIGH LIMIT 27°C).

  • Page 47: Checkout

    CHECKOUT NOTE: All settings are stored in non-volatile flash memory. Status Inspect all wiring connections at the economizer module’s termi- nals, and verify compliance with the installation wiring diagrams. Use the Status menu (refer to Table 19) to check the parameter For checkout, review the Status of each configured parameter and values for the various devices and sensors configured.

  • Page 48: Troubleshooting

    TROUBLESHOOTING For EconomizerONE troubleshooting issues, see Table 30. Table 30 — Operating Issues and Concerns SYMPTOM REASON SOLUTION An alarm is displayed on the Sensor, damper, or the whole working Check sensor, damper, or the whole working system following the detailed alarm information. system may not work properly DAC LED is blinking RED Damper slippage...

  • Page 49: Systemvu™ Controller (Factory Option)

    ADDITIONAL APPLICATION DATA SystemVu™ Controller (Factory Option) For details on operating 50FEQ*14 units equipped with the Refer to the application data sheet titled “Factory-Installed Smoke factory-installed SystemVu controller option, refer to the Detector, for Small and Medium Rooftop Units 2 to 25 Tons” for FEQ/GEQ Series Single Package Rooftop Units with SystemVu discussions on additional control features of these smoke detectors Controller Controls, Start-up, Operation and Troubleshooting...

  • Page 50: Step 11 - Adjust Factory-Installed Options

    Then add vdc for any accessories installed per the “Field Step 11 — Adjust Factory-Installed Options Accessories” section of the label. SMOKE DETECTORS NOTE: The Fan Speed Set Up labels are located on the High Volt- Smoke detector(s) will be connected at the Unit Control Board age cover in the Control Box.

  • Page 51: Units With Systemvu™ Controls

    ESP in. wg Factory Setting: Calculator 9.0 V 3000 Field Setting: 3250 Record field setting here 3500 3750 4000 Switch Range: 4250 4500 4.1 - 7.5 4750 10.0 6.9 - 8.7 5000 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential.
  • Page 52 ESP in. wg Calculator 1250 1348 1441 1528 1610 1688 1762 1832 1899 1963 3000 1336 1428 1515 1598 1677 1753 1824 1893 1959 2021 3250 1423 1509 1591 1670 1746 1819 1888 1955 2020 2081 3500 1510 1591 1669 1744 1817 1887...

  • Page 53: Typical Unit Piping

    Typical Unit Piping Table 32 — 50FEQ*14 — Heating Mode 50FEQ*14 heat pump systems include two compressors, a revers- ing valve, dual-function outdoor and indoor coils, a common liq- COMPONENT STATUS/POSITION uid line with bi-flow TXV, and dedicated cooling and heating Reversing Valve De-energized TXVs.
  • Page 54 Indoor Coil Outdoor Coil Fig. 73 — Piping Schematic — 50FEQ*14 Heating Mode © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500425-01 Printed in U.S.A.

  • Page 55: Preliminary Information

    START-UP CHECKLIST 50FEQ*14 Single Package Rooftop Heat Pump Units (Remove and use for 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 preceding sections of this Installation Instruction document.
  • Page 56 (Y/N) _____ Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____ © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500425-01 Printed in U.S.A.