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

Catalog No. 04-53500319-01

Printed in U.S.A.

Form 50FC-16-01SI Rev. A

Pg 1 

2-22

Replaces: New

Installation Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS   . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm)  . . . . . . . . . . . . . . . . . . . . . 2
Pre-Installation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 1 — Plan for Unit Location   . . . . . . . . . . . . . . . . 6

• ROOF MOUNT

Step 2 — Plan for Sequence of Unit Installation   . . . 6

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

• ALL UNITS

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

• TWO-POSITION DAMPER HOOD REMOVAL 

(FACTORY OPTION)

• ECONOMIZER AND TWO-POSITION DAMPER HOOD 

SETUP

Step 9 — Install External Condensate Trap and

Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

• FIELD WIRING

• UNITS WITH FACTORY-INSTALLED NON-FUSED 

DISCONNECT

• UNITS WITHOUT FACTORY-INSTALLED NON-

FUSED DISCONNECT

• CONVENIENCE OUTLETS

• ALL UNITS

• FACTORY-OPTION THRU-BASE CONNECTIONS 

(ELECTRICAL CONNECTIONS)

Electric Heaters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

• SINGLE POINT BOXES AND SUPPLEMENTARY 

FUSES

• SINGLE POINT BOXES WITHOUT FUSES

• LOW-VOLTAGE CONTROL CONNECTIONS

• HUMIDI-MIZER® CONTROL CONNECTIONS

• TYPICAL UNIT WIRING DIAGRAMS

EconoMi$er X (Factory-Installed Option)  . . . . . . . . 25

• PRODUCT DESCRIPTION

• SYSTEM COMPONENTS

• SPECIFICATIONS

• INPUTS

• OUTPUTS

• ENVIRONMENTAL

• ECONOMIZER MODULE WIRING DETAILS

• S-BUS SENSOR WIRING

• CO2 SENSOR WIRING

• INTERFACE OVERVIEW

• USER INTERFACE

• KEYPAD

• MENU STRUCTURE

• SETUP AND CONFIGURATION

• TIME-OUT AND SCREENSAVER

• STANDARD OR SINGLE SPEED FAN OPERATION

• 2 SPEED FAN OPERATION

• 2SP H/C (2 SPEED HEAT/COOL) SPEED FAN 

OPERATION

• 3 SPEED FAN OPERATION

• ENTHALPY SETTINGS

• CHECKOUT

• TROUBLESHOOTING

SystemVu™ Controller (Factory Option) . . . . . . . . .36

• SMOKE DETECTORS

• COMPLETING INSTALLATION OF RETURN-AIR 

SMOKE SENSOR

• ADDITIONAL APPLICATION DATA

Step 11 — Adjust Factory-Installed Options  . . . . . .38

• SMOKE DETECTORS

• ECONOMI$ER X OCCUPANCY SWITCH

Step 12 — Install Accessories   . . . . . . . . . . . . . . . . .38
Step 13 — Fan Speed Set Up  . . . . . . . . . . . . . . . . . .38

• UNITS WITH ELECTRO-MECHANICAL CONTROLS

• UNITS WITH SYSTEMVU™ CONTROLS

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 

. When you see this symbol on the unit and in

instructions  or  manuals,  be  alert  to  the  potential  for  personal

injury.

WeatherMaker

® 

50FC-*16

Single Package Rooftop Cooling Only

 with Puron

®

 (R-410A) Refrigerant

and EcoBlue™ Fan Technology

Summary of Contents for WeatherMaker 50FC-16 Series

Page 1: ... ECONOMIZER MODULE WIRING DETAILS S BUS SENSOR WIRING CO2 SENSOR WIRING INTERFACE OVERVIEW USER INTERFACE KEYPAD MENU STRUCTURE SETUP AND CONFIGURATION TIME OUT AND SCREENSAVER STANDARD OR SINGLE SPEED FAN OPERATION 2 SPEED FAN OPERATION 2SP H C 2 SPEED HEAT COOL SPEED FAN OPERATION 3 SPEED FAN OPERATION ENTHALPY SETTINGS CHECKOUT TROUBLESHOOTING SystemVu Controller Factory Option 36 SMOKE DETECTO...

Page 2: ...erhead obstructions which may interfere with unit lifting or rigging DANGER ELECTRICAL SHOCK HAZARD Failure to follow this warning will result in personal injury or death Before performing service or maintenance operations on unit turn off main power switch to unit and install lock s and lockout tag s Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rat...

Page 3: ...u Cu Cu Louvered Hail Guard Voltage 1 575 3 60 5 208 230 3 60 6 460 3 60 Design Revision Factory Design Revision Base Unit Controls 0 Electro mechanical Controller 3 SystemVu Controller 6 Electro mechanical Controller with W7220 Economizer Control Can be used with EconoMi er X w Fault Detection and Diagnostic Intake Exhaust Options A None B Temperature Economizer w Barometric Relief F Enthalpy Eco...

Page 4: ...4 Fig 2 50FC 16 Unit Dimensional Drawing ...

Page 5: ...5 Fig 2 50FC 16 Unit Dimensional Drawing cont ...

Page 6: ...on The support method used for this unit will dictate different se quences for the steps of unit installation For example on curb mounted units some accessories must be installed on the unit be fore the unit is placed on the curb Review the following for rec ommended sequences for installation steps NOTE Unit is not designed to have overhead obstruction Contact Application Engineering for guidance...

Page 7: ...50 mm beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstruct ing airflow NOTE Horizontal units may be installed on a roof curb if required ALTERNATE UNIT SUPPORT IN LIEU OF CURB OR SLAB MOUNT A non combustible sleeper rail can be used in the unit curb sup port area If sleeper rails cannot be used support the long sides of the unit...

Page 8: ...8 Fig 5 50FC 16 Roof Curb Details ...

Page 9: ...o float if necessary Fig 7 Retrofit Installation Dimensions If the alternative condensate drain location through the bottom of the unit is used in conjunction with a retrofit curb the hole in the curb must be moved 12 5 in 320 mm towards the duct end of the unit See Fig 8 Although unit is weatherproof guard against water from higher level runoff and overhangs Remove all shipping materials and top ...

Page 10: ...ig 10 Be careful to not damage any wiring or cut tie wraps securing any wiring 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps out lined in Economizer and Two Position Hood Setup on page 11 Fig 9 Typical Access Panel Locations Fig 10 Economizer Hood Package Location TWO POSITION DAMPER HOOD REMOVAL FACTORY OPTION 1 The hood is shipped...

Page 11: ...clips to lock the filter into place See Fig 14 6 Caulk the ends of the joint between the unit top panel and the hood top 7 Replace the filter access panel Fig 12 Indoor Coil Access Panel Relocation Fig 13 Economizer Hood Construction Fig 14 Economizer Filter Installation Step 9 Install External Condensate Trap and Line The unit has one 3 4 in condensate drain connection on the end of the condensat...

Page 12: ...r than 100 A it must be attached to the unit using accessory CRDISBKT001A00 disconnect switch bracket see Fig 20 Follow the instructions provided with this accessory For smaller field disconnects be sure to use 1 2 in screws to mount the disconnect directly to the end panel see Fig 21 In either case set the disconnect vertical location on the unit so that a 90 degree fitting can be used to connect...

Page 13: ...sformer must be rewired by moving the black wire with the 1 4 in female spade connector from the 230 v connection and moving it to the 200 v 1 4 in male terminal on the primary side of the transformer Refer to unit label diagram for additional information Size wire based on MCA Minimum Circuit Amps on the unit in formative plate See Fig 23 and the unit label diagram for power wiring connections to...

Page 14: ...6 Measure the tip of the shaft to the top surface of the pointer to be 3 75 in to 3 88 in 95 mm to 99 mm for 80A and 100A NFD and 3 43 in to 3 56 in 87 mm to 90 mm for 200A NFD 7 Tighten the locking screw to secure the shaft to the NFD 8 Turn the handle to the OFF position with red arrow point ing to OFF 9 Install the handle on to the painted cover horizontally with the red arrow pointing to the l...

Page 15: ...lso includes a manual switch with fuse located in a utility box and mounted on a bracket behind the con venience outlet access is through the unit s control box access panel See Fig 26 The primary leads to the convenience outlet transformer are not factory connected Selection of primary power source is a custom er option If local codes permit the transformer primary leads can be connected at the l...

Page 16: ...discard the L bracket but retain the washer head screws and the gasket located between the L bracket and the connector plate assembly NOTE Take care not to damage the gasket as it is reused in the following step 3 Place the gasket over the embossed area in the basepan aligning the holes in the gasket to the holes in the basepan See Fig 31 4 Install the connector plate assembly to the basepan using...

Page 17: ...shing and into the bottom left side of the control box after re moving one of the two knockouts in the corner of the box Use a connector at the control box to protect the wire as it passes into the control box Pull the wires over to the terminal strip at the upper left corner of the Unit Control Board UCB Use the connector at the control box and the wire tie to take up any slack in the thermo stat...

Page 18: ... the single point box and the unit s main control box terminals Refer to the Small Roof Top Units Accessory Electric Heater and single point box installation instructions for details on tap connections All fuses on 50FC units are 60 A Note that all heaters are quali fied for use with a 60 A fuse regardless of actual heater ampacity so only 60 A fuses are necessary SINGLE POINT BOXES WITHOUT FUSES ...

Page 19: ...through the snap in wire tie and up to the web bushing near the control box 3 Feed the cable through the bushing and into the bottom left side of the control box after removing one of the two knock outs in the corner of the box Use a connector to protect the cable as it enters the control box 4 Use the connector and the wire tie to reduce any slack in the humidistat cable to ensure that it will no...

Page 20: ...NIT WIRING DIAGRAMS See Fig 42 45 for examples of typical unit control and power wiring diagrams These wiring diagrams are mounted on the in side of the unit control box Refer to the wiring diagrams in the unit control box when making field power wiring connections Fig 41 50FC 16 Unit with Humidi MiZer Adaptive Dehumidification System with Edge Pro Thermidistat Device Rc Rh W1 G Y2 C O W2 B Y1 OAT...

Page 21: ...21 Fig 42 Typical Control Wiring Diagram Electro Mechanical with W7220 Controller ...

Page 22: ...22 Fig 43 Typical Control Wiring Diagram SystemVu Controller ...

Page 23: ...23 Fig 44 Typical Power Wiring Diagram 208 230 460 3 60 Unit Shown ...

Page 24: ...24 Fig 45 Typical Power Wiring Diagram 575 3 60 Unit Shown ...

Page 25: ...Enthalpy and other options are available with bus sensors User Interface Provides status for normal operation setup parameters checkout tests and alarm and error conditions with a 2 line 16 character LCD display and four button keypad Electrical Rated Voltage 20 to 30 vac RMS 50 60 Hz Transformer 100 va maximum system input Nominal Power Consumption at 24 vac 60 Hz 11 5 VAwith out sensors or actua...

Page 26: ...ttom Left Terminal Block IAQ 2 10 2 10 vdc Air Quality Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Common IAQ 24V 24 vac Air Quality Sensor 24 vac Source ACT 2 10 2 10 vdc Damper Actuator Output 2 10 vdc ACT COM COM Damper Actuator Output Common ACT 24 v 24 vac Damper Actuator 24 vac Source NA AUX2 OCC E GND EXH1 AUX1 O Y2 Y1 Y2 O Y1 O C R 50048848 002 Rev A NA A2 OCC EX A1 Y2I Y2O ...

Page 27: ...n to exit a menu s item and return to the list of menus Fig 50 W7220 Controller Navigation Buttons To use the keypad when working with Set Points System and Ad vanced Settings Checkout tests andAlarms 1 Navigate to the desired menu 2 Press the Enter button to display the first item in the currently displayed menu 3 Use the and buttons to scroll to the desired parameter 4 Press the Enter button to ...

Page 28: ...ward through the menus and press the button to select and confirm setup item changes TIME OUT AND SCREENSAVER When no buttons have been pressed for 10 minutes the LCD displays a screen saver which cycles through the Status items Each Status items displays in turn and cycles to the next item after 5 seconds IMPORTANT Table 7 illustrates the complete hierarchy Your menu parameters may be different d...

Page 29: ...ature Displays _ _ _F if sensor sends invalid value if not connected short or out of range OA TEMP _ _ _ F 40 F to 140 F 40 C to 60 C OUTSIDE AIR TEMP Displays measured value of outdoor air temperature Displays _ _ _F if sensor sends invalid value short or out of range OA HUM _ _ 0 to 100 OUTSIDE AIR RELATIVE HUMIDITY Displays measured value of outdoor humidity from OA sensor Displays _ _ if not c...

Page 30: ...NTILATION MINIMUM POSITION AT LOW SPEED Only displays if unit is set for 2 or 3 speed and CO2 is not used If using 2 speed with 1 heat and 1 cool then set for HEATING ventilation If using 3 speed with 1 heat and 2 cool then set for LOW SPEED COOLING ventilation MIN POS M 5 4 V 2 to 10 Vdc VENTILATION MINIMUM POSITION AT MEDIUM SPEED Only displays if unit is set for 3 speed with 1 heat and 2 cool a...

Page 31: ...e NOTE If using 2 speed fan mode you must program CONV mode for W Shutdown is not available in 2 speed fan mode g In HP O B mode HP O energize heat pump on Cool default HP B energize heat pump on heat FAN SPEED 2 speed 1 speed 2 speed 2SP H C 3 speed Sets the economizer controller operation based on 1 speed 2 speed 2 speed heat cool 2SP H C or 3 speed supply fan NOTE Multi speed fan options also n...

Page 32: ... adjust for an out of calibration temperature sensor 2SP FAN DELAY 5 Minutes 0 to 20 minutes in 1 minute increments TIME DELAY ON SECOND STAGE ECONOMIZING When in economizing mode this is the delay for the high speed fan to try to satisfy the call for second stage cooling before the first stage mechanical cooling is enabled CHECKOUT DAMPER MINIMUM POSITION N A N A The checkout for the damper minim...

Page 33: ...CTUATOR STALLED Actuator stopped before achieving commanded position NOTE S a Table 7 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 b When values are displayed pressing and holding the or button causes the display to automatically increment c STATUS OCCU...

Page 34: ... Economizer Operation FAN TYPE 2SPEED INPUTS OUTPUTS DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE W HEAT ON COOL Y1 IN COOL Y2 IN COOL Y1 OUT COOL Y2 OUT FAN SPEED reference only DAMPER POSITION OCCUPIED UNOCCUPIED NONE NO ON N A N A OFF OFF HIGH MIN POS H Closed OFF OFF OFF OFF OFF LOW MIN POS L Closed OFF ON OFF ON OFF LOW MIN POS L Closed OFF ON ON ON ON HIGH MIN POS H Closed...

Page 35: ... When all of the OA conditions are above the selected boundary the conditions are not good to economize and the mode is set to NO Figure 51 shows the 5 current boundaries There is also a high limit boundary for differential enthalpy The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL high limit when a compressor stage is energized Table 10 provides the va...

Page 36: ...ovides alarm messages that display on the 2 line LCD NOTE Upon power up the module waits 60 minutes before checking for alarms This allows time for all the configured devices e g sensors actuator to become operational The exception is the SAT sensor which will alarm immediately If one or more alarms are present and there has been no keypad ac tivity for at least 5 minutes the Alarms menu displays ...

Page 37: ... COMPLETING INSTALLATION OF RETURN AIR SMOKE SENSOR 1 Unscrew the two screws holding the return air smoke detector assembly See Fig 53 Step 1 2 Save the screws 3 Turn the assembly 90 degrees and then rotate end to end Make sure that the elbow fitting is pointing down See Fig 53 Step 2 4 Screw the sensor and detector plate into its operating posi tion using screws from Step 1 See Fig 53 Step 3 5 Co...

Page 38: ...es Step 13 Fan Speed Set Up NOTE The Indoor Fan motor is equipped with an internal protec tion relay that is designed to disable unit operation if it detects a problem See Typical Wiring Diagram Fig 42 and 43 for the red wires in the Indoor fan plug UNITS WITH ELECTRO MECHANICAL CONTROLS The fan speed set up controls are located on the lower section of the Unit Control Board UCB See Fig 54 1 Check...

Page 39: ...ifications to set the following determin ing the values per the RPM Calculator label see Fig 56 Use the UP and DOWN arrow keys and the BACK key to set the values Press ENTER after setting each value to continue to the next selection IDF VENT SPD IDF HEAT SPD IDF HIGH COOL SPD IDF FREE COOL SPD For further details see the FC GC Series Single Package Rooftop Units with SystemVu Controller Controls S...

Page 40: ...750 89 0 4 1348 1428 1509 1591 1675 1759 1845 1931 2018 89 0 6 1441 1515 1591 1669 1749 1829 1912 1995 2079 0 8 1528 1598 1670 1744 1820 1898 1977 2057 2138 2197 89 1 0 1610 1677 1746 1817 1890 1964 2041 2118 2178 89 1 2 1688 1753 1819 1887 1957 2029 2103 2092 2163 89 1 4 1762 1824 1888 1954 2022 2153 2019 2085 89 1 6 1 8 2 0 1832 1893 1955 2082 2146 1899 1959 2020 2143 1963 2021 2081 89 89 89 89 ...

Page 41: ......

Page 42: ...he right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500319 01 Printed in U S A Form 50FC 16 01SI Rev A Pg 42 2 22 Replaces New 2022 Carrier ...

Page 43: ...air inlet screens are in place Y N _____ Verify that unit is level Y N _____ Verify that fan assembly is free of obstructions and rotor spins freely Y N _____ Verify that scroll compressors are rotating in the correct direction Y N _____ Verify installation of thermostat Y N _____ III START UP ELECTRICAL Supply Voltage L1 L2_____________ L2 L3_____________ L3 L1_____________ Supply Voltage to Grou...

Page 44: ..._ F Check for correct ramp up of outdoor fan motor as condenser coil warms Y N _____ 4 Switch unit to high latent mode sub cooler by closing humidistat with Y1 closed Y N _____ 5 Check unit charge per charging chart Y N _____ OBSERVE A Reduction in suction pressure 5 to 7 psi expected Y N _____ B Discharge pressure unchanged Y N _____ C Liquid temperature drops to 50 F to 55 F range Y N _____ D LS...

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