Carrier WeatherMaker 50FCQ Installation Instructions Manual

Single package rooftop heat pump with puron r-410a refrigerant and ecoblue fan technology

Hide thumbs

page of 56

/ 56
Bookmarks

Quick Links

Download this manual

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1

MODEL NUMBER NOMENCLATURE AND

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . 6

• ROOF MOUNT

Step 2 — Plan for Sequence of Unit Installation . . . 7

• CURB-MOUNTED INSTALLATION

• PAD-MOUNTED INSTALLATION

• FRAME-MOUNTED INSTALLATION

Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . 7

• ROOF CURB MOUNT

• SLAB MOUNT (HORIZONTAL UNITS ONLY)

• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR

SLAB MOUNT)

Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . . 7

• FOR UNITS WITH ACCESSORY ELECTRIC HEATERS

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . 9

• POSITIONING ON CURB

Step 7 — Convert to Horizontal and Connect . . . . 10

• ALL UNITS

Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 10

• ECONOMIZER HOOD REMOVAL (FACTORY

OPTION)

• ECONOMIZER HOOD SETUP

Step 9 — Install External Condensate 

Trap and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 10 — Make Electrical Connections . . . . . . . . . 12

• FIELD WIRING

• UNITS WITHOUT FACTORY-INSTALLED NON-

FUSED DISCONNECT

• CONVENIENCE OUTLETS

• ALL UNITS

• FACTORY-OPTION THRU-BASE CONNECTIONS 

(ELECTRICAL CONNECTIONS)

• COMMERCIAL DEFROST CONTROL

• ELECTRIC HEATERS

• SINGLE POINT BOXES AND SUPPLEMENTARY

FUSES

• SINGLE POINT BOXES WITHOUT FUSES

• LOW-VOLTAGE CONTROL CONNECTIONS

• CONTROL AND POWER WIRING DIAGRAMS

EconomizerONE (Factory Option) . . . . . . . . . . . . . . 26

• ECONOMIZER SETTINGS

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500352-01

Installation Instructions

Page

Printed in U.S.A.

Form No. 50FCQ-14-02SI Rev. A

WeatherMaker

Single Package Rooftop Heat Pump

with Puron

and EcoBlue

• WIRING

• SETUP AND CONFIGURATION

• INSTALLING OPTIONAL HH57LW001 SINGLE

OUTSIDE AIR ENTHALPY SENSOR

• CHECKOUT

• TROUBLESHOOTING

SystemVu™ Controller (Factory Option) . . . . . . . . .47

• SMOKE DETECTORS

• COMPLETING INSTALLATION OF RETURN-AIR

SMOKE SENSOR

• ADDITIONAL APPLICATION DATA

Step 11 — Adjust Factory-Installed Options . . . . . .48

• SMOKE DETECTORS

• ECONOMIZERONE OCCUPANCY SWITCH

Step 12 — Install Accessories . . . . . . . . . . . . . . . . .48

Step 13 — Fan Speed Set Up . . . . . . . . . . . . . . . . . .48

• UNITS WITH ELECTRO-MECHANICAL CONTROLS

• UNITS WITH SYSTEMVU™ CONTROLS

Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .52

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, including ANSI (American National

Standards Institute) Z223.1. 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

. When you see this symbol on the unit and 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.

Pg 1

50FCQ*14

(R-410A) Refrigerant

™

Fan Technology

4-24

Replaces: 50FCQ-14-01SI

Need help?

Do you have a question about the WeatherMaker 50FCQ and is the answer not in the manual?

Questions and answers

Summary of Contents for Carrier WeatherMaker 50FCQ

Page 1 ® WeatherMaker 50FCQ*14 Single Package Rooftop Heat Pump with Puron ® (R-410A) Refrigerant ™ and EcoBlue Fan Technology Installation Instructions • WIRING CONTENTS • SETUP AND CONFIGURATION Page • INSTALLING OPTIONAL HH57LW001 SINGLE OUTSIDE AIR ENTHALPY SENSOR SAFETY CONSIDERATIONS ....1 •...
Page 2 DANGER CAUTION ELECTRICAL SHOCK HAZARD PERSONAL INJURY HAZARD Failure to follow this warning will result in personal injury or Failure to follow this caution may result in personal injury. death. Sheet metal parts may have sharp edges or burrs. Use care and Before performing service or maintenance operations on unit, wear appropriate protective clothing, safety glasses and gloves turn off main power switch to unit and install lock(s) and...
Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit/Series/Model Packaging & Seismic Compliance 50FCQ = Packaged Rooftop Heat Pump 0 = Standard Standard Efficiency with 1 = LTL EcoBlue™ Fan Technology Electrical Options Refrig. Systems Options A = None M = Two Stage Cooling, Single Circuit C = Non-Fused Disconnect (NFD)
Page 4 Fig. 2 — 50FCQ-14 Unit Dimensional Drawing...
Page 5 Fig. 2 — 50FCQ*14 Unit Dimensional Drawing (cont)
Page 6 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 NOTE: The gasketing of the unit to the roof curb is critical for a Step 2 — Plan for Sequence of Unit Installation watertight seal. Install gasket supplied with the roof curb as shown The support method used for this unit will dictate different in Fig.
Page 8 Fig. 5 — 50FCQ*14 Roof Curb Details...
Page 9 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 50FCQ*14 1901 116.0 2945 57.0 1450 59.5 1510 NOTE(S): 1. Dimensions in ( ) are in millimeters. 2.
Page 10 22-5/16 15-1/2 8-5/8 Fig. 7 — Retrofit Installation Dimensions If the alternative condensate drain location through the bottom of and weatherproof all external ductwork, joints, and roof or build- the unit is used in conjunction with a retrofit curb, the hole in the ing openings with counter flashing and mastic in accordance with curb must be moved 12-1/2 in.
Page 11 Side Panel Remove Hood Parts Rain Deflectors Cut Plastic Ties (2) Places Economizer Panel Caulk Here Indoor Indoor Coil Coil Access Access Panel Panel Fig. 11 — Indoor Coil Access Panel Relocation Fig. 10 — Economizer Hood Package Location Panel ECONOMIZER HOOD SETUP 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...
Page 12 Step 9 — Install External Condensate  NOTE: Check all factory and field electrical connections for tight- Trap and Line ness. Field-supplied wiring shall conform with the limitations of minimum 63°F (33°C) rise. The unit has one 3/4 in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom.
Page 13 WARNING FIRE HAZARD Failure to follow this warning could result in personal injury, death, or property damage. Do not connect aluminum wire between disconnect switch and unit. Use only copper wire. Electric Disconnect Switch Copper Wire Only Fig. 18 — Conduit into Single Point Box Aluminum Wire Fig.
Page 14 Fig. 23 — Location of Non-Fused Disconnect Enclosure UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage. 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 warranty.
Page 15 Pwd-CO Fuse Switch Pwd-CO Transformer Convenience Outlet GFCI Disconnect Access Panel Fig. 25 — Convenience Outlet Location Fig. 24 — Handle and Shaft Assembly for NFD Installing Weatherproof Cover A weatherproof cover is now required by UL standards for the UNITS WITHOUT FACTORY-INSTALLED NON-FUSED factory-installed convenience outlets.
Page 16 Non-Powered Type ALL UNITS Requires the field installation of a general-purpose 125-v 15-A Test the GFCI receptacle by pressing the TEST button on the face circuit powered from a source elsewhere in the building. Observe of the receptacle to trip and open the receptacle. Check for proper national and local codes when selecting wire size, fuse or breaker grounding wires and power line phasing if the GFCI receptacle requirements and disconnect switch size and location.
Page 17 This device can be a thermostat (field-supplied) or a SystemVu™ power and control wiring. controller (available as factory-installed option for use on a Carrier Comfort Network ® or as a stand-alone control). All field added wire must comply with UL and local NEC standards.
Page 18 COMMERCIAL DEFROST CONTROL application does not use an “O” or “B” signal to determine revers- ing valve position. Reversing valves are energized during the cool- On 50FCQ units equipped with electro-mechanical controls the ing stages and the defrost cycle and de-energized during heating Defrost Control Board (DFB) coordinates thermostat demands for cycles.
Page 19 Table 3 — 50FCQ 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 20 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 21 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 22 Fig. 41 — Typical 50FCQ 14 Control Wiring Diagram, Electro-Mechanical with POL224 Controller, 230, 460, 575-3-60 Unit Shown...
Page 23 Fig. 42 — Typical 50FCQ 14 Control Wiring Diagram, SystemVu™ Controller, 230, 460, 575-3-60 Unit Shown...
Page 24 Fig. 43 — Typical 50FCQ Power Wiring Diagram — 208/230, 460-3-60 Unit Shown...
Page 25 Fig. 44 — Typical 50FCQ 14 Power Wiring Diagram — 575-3-60 Unit Shown...
Page 26 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 27 Table 5 — 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 28 Table 6 — 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 29 Table 7 — 1 and 2-Stage Cooling Stage I/O Logic Table 10 — 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 30 Table 12 — 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 2VENTMAXL ...
Page 31 • 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 cool- depending on fan configuration. ing faults, sensor operation faults, and damper modulating •...
Page 32 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 33 Table 14 — 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 34 Connecting Peripheral Devices to the Economizer Controller See Fig. 52-56 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 35 • 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 36 SETUP AND CONFIGURATION NOTE: Parameters and display menus may display differently/dynamically if different applications are config- ured. See Tables 15-22. 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 37 Table 15 — 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 38 Table 16 — 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 39 Table 17 — 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 40 Table 18 — 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 41 Table 21 — 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 42 Fig. 57 — HH57LW001 Dimensional, Connection and Switching Information Fig. 58 — HH79NZ039 Dry Bulb and Mixed Air Sensor Wiring Economizer Actuator Outside Air (This End) Damper Wiring Harness Return Air Damper Fig. 59 — EconomizerONE System Component Locations Fig. 60 — California Title 24 Zones...
Page 43 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. 61 — U.S. and Canada Climate Zones Table 23 —...
Page 44 Economizers are shipped standard with an HH79NZ039 outside Table 24 — California Title 24 Regional High Limit air dry bulb sensor (refer to Fig. 58). 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 45 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 15) to check the parameter For checkout, review the Status of each configured parameter and values for the various devices and sensors configured.
Page 46 TROUBLESHOOTING For EconomizerONE troubleshooting issues, see Table 26. Table 26 — 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 47 ADDITIONAL APPLICATION DATA SystemVu™ Controller (Factory Option) For details on operating 50FCQ*14 units equipped with the Refer to the application data sheet titled “Factory-Installed Smoke factory-installed SystemVu controller option, refer to the FC/GC Detector, for Small and Medium Rooftop Units 2 to 25 Tons” for Series Single Package Rooftop Units with SystemVu Controller discussions on additional control features of these smoke detectors Controls, Start-up, Operation and Troubleshooting manual.
Page 48 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 49 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 50 UNITS WITH SYSTEMVU™ CONTROLS Use the DOWN arrow key highlight the UNIT CONFIGU- RATIONS menu then press ENTER. On units equipped with the factory-installed SystemVu control- ler, the Fan Speed settings are accessed through the SystemVu Highlight UNIT CONFIGURATIONS then press ENTER. interface.
Page 51 Typical Unit Piping Table 28 — 50FCQ*14 — Heating Mode 50FCQ*14 heat pump systems include two compressors, a revers- COMPONENT STATUS/POSITION ing valve, dual-function outdoor and indoor coils, a common liq- Reversing Valve De-energized uid line with bi-flow TXV, and dedicated cooling and heating Check Valve A Open TXVs.
Page 52 Filter Drier LPS/LOC Heating TXV Reversing Valve Indoor Coil Outdoor Coil Fig. 67 — Piping Schematic — 50FCQ*14 Cooling Mode Filter Drier LPS/LOC Heating TXV Reversing Valve Indoor Coil Outdoor Coil Fig. 68 — Piping Schematic — 50FCQ*14 Heating Mode Pre-Start and Start-Up This completes the mechanical installation of the unit.
Page 54 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500352-01 Printed in U.S.A. Form No. 50FCQ-14-02SI Rev. A Pg 54 4-24 Replaces: 50FCQ-14-01SI...
Page 55 START-UP CHECKLIST 50FCQ*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. 04-53500352-01 Printed in U.S.A.

This manual is also suitable for:

Weathermaker 50fcq 14 series