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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE AND
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . 7
• 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 . . . . . . . . . . . . . . 9
• FOR UNITS WITH ACCESSORY ELECTRIC
HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . 9
• POSITIONING ON CURB
Step 7 — Convert to Horizontal and Connect
Ductwork (when required) . . . . . . . . . . . . . . . . . . 10
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 11
• ECONOMIZER HOOD AND TWO-POSITION
DAMPER HOOD PACKAGE REMOVAL AND
SETUP (FACTORY OPTION)
• ECONOMIZER AND 2-POSITION HOOD
Step 9 — Units with Hinged Panels Only . . . . . . . . 12
Step 10 — Install External Condensate Trap and
Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 11 — Make Electrical Connections . . . . . . . . . 13
• FIELD POWER SUPPLY
• UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
• UNITS WITHOUT FACTORY-INSTALLED
NON-FUSED DISCONNECT
• ALL UNITS
• CONVENIENCE OUTLETS
• 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
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500347-01
Installation Instructions
Page
Printed in U.S.A.
Form No. 50FC-4-7-05SI Rev. B
Single Package Rooftop Cooling Only
with Puron
• SINGLE POINT BOXES WITHOUT FUSES
• LOW-VOLTAGE CONTROL CONNECTIONS
• HUMIDI-MIZER SYSTEM CONTROL
CONNECTIONS
• TYPICAL UNIT WIRING DIAGRAMS
Dehumidification System
Humidi-MiZer
®
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
• NORMAL COOLING
• DEHUM/MECH COOLING (SUBCOOLING) MODE
• DEHUMIDIFICATION (HOT GAS REHEAT) MODE
• REHEAT CONTROL
EconomizerONE (Factory Option) . . . . . . . . . . . . . .28
• ECONOMIZER SETTINGS
• WIRING
• SETUP AND CONFIGURATION
• INSTALLING OPTIONAL HH57LW001 SINGLE
OUTSIDE AIR ENTHALPY SENSOR
• CHECKOUT
• TROUBLESHOOTING
RTU Open Controller (Factory Option) . . . . . . . . . .49
™
SystemVu
Controller (Factory Option) . . . . . . . . .49
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .49
• LOW AMBIENT
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Step 12 — Adjust Factory-Installed Options . . . . . .50
• SMOKE DETECTORS
• ECONOMIZERONE OCCUPANCY SWITCH
Step 13 — Install Accessories . . . . . . . . . . . . . . . . .50
Step 14 — Fan Speed Set Up . . . . . . . . . . . . . . . . . .50
• UNITS WITH ELECTROMECHANICAL CONTROLS
• UNITS WITH SYSTEMVU
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.
Pg 1
WeatherMaker
50FC**04-07
®
(R-410A) Refrigerant
™
CONTROLS
3-24
Replaces: 50FC-4-7-04SI
®
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Summary of Contents for Carrier WeatherMaker 50FC-04 Series
- Page 1 ® WeatherMaker 50FC**04-07 Single Package Rooftop Cooling Only ® with Puron (R-410A) Refrigerant Installation Instructions • SINGLE POINT BOXES WITHOUT FUSES CONTENTS • LOW-VOLTAGE CONTROL CONNECTIONS Page • HUMIDI-MIZER SYSTEM CONTROL CONNECTIONS • TYPICAL UNIT WIRING DIAGRAMS SAFETY CONSIDERATIONS ....1 Dehumidification System ...
- Page 2 Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. WARNING DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards PERSONAL INJURY ENVIRONMENTAL which could result in personal injury or death. CAUTION is used HAZARD to identify unsafe practices, which may result in minor personal Failure to follow this warning could cause personal injury or...
- Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Packaging & Seismic Compliance 50 = Electric Heat Packaged Rooftop 0 = Standard 1 = LTL ® Model Series — WeatherMaker FC = 14.0 SEER Standard Efficiency, sizes 04-06 Electrical Options A = None 13.4 SEER2 Standard Efficiency, sizes 04-06...
- Page 4 Fig. 2 — 50FC 04-07 Unit Dimensional Drawing...
- Page 5 Fig. 2 — 50FC 04-07 Unit Dimensional Drawing (cont)
- Page 6 Fig. 2 — 50FC 04-07 Unit Dimensional Drawing (cont)
- Page 7 Prepare bottom condensate drain connection to suit planned INSTALLATION condensate line routing (refer to Step 10 for details). Jobsite Survey Rig and place unit. Complete the following checks before installation. Install outdoor air hood. Consult local building codes and the NEC (National Elec- Install condensate line trap and piping.
- Page 8 ROOF CURB POWER WIRING CONTROL WIRING ACCESSORY CONVENIENCE NOTES: CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING ACCESSORY # 1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED. FITTING FITTING OUTLET WIRING CONNECTOR 2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY. 14"...
- Page 9 UNITS WITH ACCESSORY ELECTRIC HEATERS All installations require a minimum clearance to combustible sur- faces of 1 in. (25 mm) from duct for first 12 in. (305 mm) away from unit. Outlet grilles must not lie directly below unit discharge. WARNING PERSONAL INJURY HAZARD Failure to follow this warning could cause personal injury.
- Page 10 Place all seal strips in place before "B" placing unit 36-54 in. Required Detail "A" on roof curb (914-1371 mm) Spreader Bars Duct End "C" Side "A" See Detail "A" NOTE(S): 1. SPREADER BARS ARE REQUIRED. Top damage will occur if spreader bars are not used. 2.
- Page 11 Screws Hood Parts Plastic Tie Wrap Qty (2) Duct Covers Sheet Metal Face Up Screws for Metal Tray Qty (2) Basepan Fig. 10 — Economizer and Two-Position Damper Hood Parts Location Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in the following section Economizer Hood and 2-Position Fig.
- Page 12 Panel Indoor Coil Access Panel Compressor Door Outdoor Coil Left Hood Latch Side Screw 19-1/16 in. 19-1/16 in. (483mm) (483mm) 33-3/8 in. 33-3/8 in. Fig. 14 — Compressor Door Latch Location (848mm) (848mm) Step 10 — Install External Condensate Trap and Hood Divider Line The unit has one 3/4 in.
- Page 13 All units must have an external trap for condensate drainage. In- Units Without Non-Fused Disconnect Option stall 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 10 ft (25 mm in 3 m) of run.
- Page 14 Field-Install the NFD Shaft and Handle UNITS WITHOUT FACTORY-INSTALLED NON-FUSED DISCONNECT Remove the control box access panel. The NFD enclosure is located below the control box (see Fig. 19). When installing units, provide a disconnect switch per NEC (Na- tional Electrical Code) of adequate size. Disconnect sizing data Remove (3) cap head screws that secure the NFD enclosure is provided on the unit informative plate.
- Page 15 Convenience Outlet GFCI PWD-CO Fuse Switch Weatherproof PWD-CO Cover Transformer Fig. 23 — Weatherproof Cover — Shipping Location Fig. 21 — Convenience Outlet Location on Units with Factory-Installed DDC Loosen the 2 screws at the GFCI duplex outlet, until approximately 1/2 in. (13 mm) under screw heads are exposed. Press the gasket over the screw heads.
- Page 16 Unit-Powered Convenience Outlet FACTORY OPTION THRU-BASE CONNECTIONS A unit-mounted transformer is factory-installed to stepdown the This service connection kit consists of a 1/2 in. electrical bulkhead main power supply voltage to the unit to 115-v at the duplex connector and a 3/4 in. electrical bulkhead connector, connected to receptacle.
- Page 17 This device can be a thermostat (field-supplied), a SystemVu ™ Fig. 28 — Typical Low-Voltage Control Connections controller (available as factory-installed option for use on a Carrier Comfort Network ® or as a stand alone control), or the RTU Open...
- Page 18 UNIT WITHOUT THRU-BASE CONNECTION KIT Pass the thermostat control wires through the hole provided in the corner post, then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the upper-left corner of the Unit Control Board.
- Page 19 Heater on rise in space RH above control set point) or a combination Wiring Relay Mounting Screws thermostat-humidistat control device such as Carrier’s Edge ® Fig. 33 — Typical Single Point Installation Thermidistat ™ device with isolated contact set for dehumidifica- tion control.
- Page 20 Fig. 36 — Edge Pro Thermidistat Feed wires through the raceway built into the corner post (see Connecting the Carrier Humidistat (HL38MG029) Fig. 29) to the 24-v barrier located on the left side of the con- Route the humidistat 2-conductor cable (field-supplied) trol box.
- Page 21 Fig. 39 — Typical 50FC 04-06 Control Wiring Diagram with Electromechanical and POL224, 208/230-3-60 Unit Shown...
- Page 22 Fig. 40 — Typical 50FC 07 Control Wiring Diagram with Electromechanical and POL224, 208/230-3-60 Unit Shown...
- Page 23 Fig. 41 — Typical 50FC 04-07 Power Wiring Diagram, 208/230-3-60 Unit Shown...
- Page 24 Fig. 42 — Typical 50FC 04-07 Power Wiring Diagram — 460/575-3-60...
- Page 25 DEHUM/MECH COOLING (SUBCOOLING) MODE Humidi-MiZer ® Dehumidification System (Optional) This mode increases the latent heat removal and decreases sen- sible cooling compared to normal cooling. This occurs when Units with the factory-installed Humidi-MiZer system option there is a cooling and dehumidification demands. are capable of providing multiple modes of improved dehu- midification as a variation of the normal cooling cycle.
- Page 26 Indoor Valve Supply Air Valve Condenser Coil Hot Gas Reheat Coil Outdoor Air Expansion Valve Valve (TXV) Compressor Evaporator Coil = Closed Valve = Open Valve Indoor Return Air Fig. 44 — Normal Cooling Mode – Humidi-MiZer System with 2 Stage Cooling, 50FC 07 Indoor Valve Leaving Air...
- Page 27 Indoor Valve Leaving Air Reheat Mode Metering Device (TXV) Hot Gas Reheat Coil Condenser Coil Outdoor Air Valve Compressor Evaporator Coil = Closed Valve = Open Valve Indoor Entering Air Fig. 47 — Hot Gas Reheat Mode – Humidi-MiZer System with Single Stage Cooling, 50FC 04-06 Indoor Valve Supply Air...
- Page 28 the harness are made to the C (24 vac common) and R (24 vac EconomizerONE (Factory Option) power) terminals of the economizer controller. See Fig. 51. ECONOMIZER SETTINGS LED Indication Interface Overview NOTE: If different faulty events occur at the same time, then EconomizerONE sensor/DAC LED lights up following the priority below: Red ...
- Page 29 Table 4 — 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 5 — 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 setpoint. • Fixed Dry bulb If the outside air dry bulb temperature is below the temperature shutoff MA (Mixed Air) temperature sensor setpoint, then the outside air is used to meet all or part of the cooling demand.
- Page 31 Table 6 — 1 and 2-Stage Cooling Stage I/O Logic Table 9 — 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 11 — Different Damper Position Settings 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 33 Exhaust Fan Operation Users can enable this function only from the Climatix mobile ap- ™ plication if the related function is available in the current mobile Up to two exhaust fans can be connected to the economizer application version. controller. Fault Detection and Diagnostics •...
- Page 34 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, humidity sensor, combination temperature and humidity sensor, sensor), thermostats, and exhaust fans can be connected to...
- Page 35 Table 13 — EconomizerONE 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. 56-60 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 NOTE: Parameters and display menus may display differently/ dynamically if different applications are configured. See Tables 14-21. IMPORTANT: Before setup and configuration, it is recommend- ed to obtain some location-based values, such as shutoff points, IMPORTANT: Not all operations are available on the local or utilize the location services in the Climatix ™...
- Page 39 Table 14 — Status Display PARAMETER DESCRIPTION VALUE 1FREECOOL Indicates whether the system can use outdoor air for free cooling. 1ECON ENAB Indicates whether outdoor air is being used for the first stage of cooling. Indicates whether the space is occupied. If users choose ALWAYS for 6OCC when configuring I/Os, then the parameter value is YES;...
- Page 40 Table 15 — Parameter Settings — Basic PARAMETER DESCRIPTION RANGE DEFAULT Temperature shutoff setpoint can be obtained automatically if a smartphone or tablet with the mobile application installed on it is connected to the 2 TEMP OFF 48...80°F; increment by 1 63°F network provided by a Wi-Fi/WLAN stick plugged into the economizer controller.
- Page 41 Table 16 — 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 17 — Parameter Settings — I/O Configurations (cont) PARAMETER DESCRIPTION VALUE DEFAULT Choose “COOL 2” if Cooling Stage 2 is available (another compressor is COOL 2 6Y2O COOL 2 connected to the Economizer). Otherwise, choose “NONE”. NONE Auxiliary DO-1. Configurable as: NONE •...
- Page 43 Table 20 — 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. 61 — HH57LW001 Dimensional, Connection and Switching Information Fig. 62 — HH79NZ039 Dry Bulb and Mixed Air Sensor Wiring Actuator Wiring Harness HH79NZ039 Outside Air Temperature Sensor Outside Air Damper Fig. 64 — California Title 24 Zones Fig. 63 — EconomizerONE Component Locations (CRECOMZR108A00 Shown)
- 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. 65 — U.S. and Canada Climate Zones Table 22 —...
- Page 46 Economizers are shipped standard with an HH79NZ039 outside Table 23 — California Title 24 Regional High Limit air dry bulb sensor (see Fig. 62). System default setting (high temp Dry Bulb Temperature Settings 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 Status Use the Status menu (refer to Table 14) to check the parameter Inspect all wiring connections at the economizer module’s termi- values for the various devices and sensors configured. nals, and verify compliance with the installation wiring diagrams. For checkout, review the Status of each configured parameter and NOTE: For information about menu navigation and use of the perform the Test Commands tests (refer to Table 19).
- Page 48 TROUBLESHOOTING For EconomizerONE troubleshooting issues see Table 25. Table 25 — 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 Turn the assembly 90 degrees and then rotate end to end. RTU Open Controller (Factory Option) Make sure that the elbow fitting is pointing down. See For details on operating 50FC-*04-07 units equipped with the fac- Fig. 67, Step 2. tory-installed RTU Open controller option, refer to the Factory- Installed Option RTU Open Multi-Protocol Controller Controls, Screw the sensor and detector plate into its operating position...
- Page 50 Then add vdc for any accessories installed per the “Field Step 12 — 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 ESP in. wg Factory Setting: Calculator 9.0 V 1500 Field Setting: 1625 Record field setting here 1750 1875 2000 Switch Range: 2125 10.0 2250 4.1 - 7.5 2375 6.9 - 8.7 2500 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range 1 Stage E Heat designed for maximum field adjustment potential.
- Page 52 ESP in. wg Calculator 1500 1301 1477 1639 1788 1925 2054 2174 2289 1625 1381 1544 1699 1843 1976 2101 2220 2332 1750 1463 1615 1763 1902 2031 2152 2268 2378 1875 1548 1688 1828 1962 2087 2206 2318 2000 1633 1764 1897...
- 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. 04-53500347-01 Printed in U.S.A. Form No. 50FC-4-7-05SI Rev. B Pg 54 3-24 Replaces: 50FC-4-7-04SI...
- Page 55 START-UP CHECKLIST FOR 50FC**04-07 SINGLE PACKAGE ROOFTOP ELECTRIC COOLING 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 document.
- Page 56 (Y/N) _____ 10. Restore set points for thermostat and humidistat. (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. 04-53500347-01 Printed in U.S.A.
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