Carrier WeatherMaster 50V 28 Installation And Start-Up Instructions Manual

Optional electric or hydronic heating and electric cooling applied rooftop units with puron advance refrigerant (r-454b) and carrier smartvu control

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Installation and Start-up Instructions

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2

A2L REFRIGERATION INFORMATION . . . . . . . . . . . 3

Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Minimum Conditioned Space Area . . . . . . . . . . . . . . 3

Leak Detection and Dissipation . . . . . . . . . . . . . . . . . 4

Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

• SERVICE PARTS

• ELECTRICAL SAFETY

• REFRIGERANT SYSTEM SAFETY

• ELECTRONIC LEAK DETECTORS

• LEAK DETECTION FLUIDS

Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Step 1 — Inspect Equipment . . . . . . . . . . . . . . . . . . . 9

Step 2 — Unload Equipment . . . . . . . . . . . . . . . . . . . 9

Step 3 — Store Equipment (If Required) . . . . . . . . . . 9

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Step 1 — Perform Jobsite Survey . . . . . . . . . . . . . . 10

Step 2 — Install Unit Support . . . . . . . . . . . . . . . . . . 10

• ROOF CURB

• STEEL BEAMS

• SLAB MOUNT UNIT

• RETROFIT UNIT

Step 3 — Install Field-Fabricated Ductwork . . . . . . 10

Step 4 — Install Field-Fabricated Ductwork . . . . . . 28

Step 5 — Install Curb Gasketing (Vertical Supply or

Return Units Only) . . . . . . . . . . . . . . . . . . . . . . . . 28

Step 6 — Rig Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Step 7 — Connect Primary Condensate Drain . . . . 28

Step 8 — Connect Secondary Condensate Drain

(Sizes 54-98) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Step 9 — Install Barometric Relief Hoods 

(Standard or Extended Chassis with Barometric

Relief Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Step 10 — Set Up Power Exhaust (Size 28-98 with

Standard Static Power Exhaust or Size 28-50 with

Medium Static Power Exhaust Only) . . . . . . . . . 59

Step 11 — Route Field Wiring . . . . . . . . . . . . . . . . . 61

• UNIT POWER FEED

• UNPOWERED CONVENIENCE OULET

• ULTRA-VIOLET LIGHT (UV-C) FIXTURES

• POWER WIRE SIZING

• OPERATING VOLTAGE

• GROUND WIRING

• OVERCURRENT PROTECTION

• SHORT CIRCUIT CURRENT PROTECTION

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

Catalog No. 04-53500489-01

Optional Electric or Hydronic Heating and Electric Cooling

Applied Rooftop Units with Puron

Printed in U.S.A.

Form No. 50V-2SI

(R-454B) and Carrier SmartVu

• ROUTE FIELD WIRING

Step 12 — Set Up Pre-Filter Status 

Page

Switch (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . .66

Step 13 — Connect Air Pressure Tubing . . . . . . . .66

• VAV INDOOR FAN

• POWER EXHAUST BUILDING PRESSURE CONTROL

Step 14 — Set Up Return Air Smoke Detector

(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Step 15 — Connect Hot Water Piping and Accessories

(Hot Water Coil Units Only — Optional) . . . . . . .67

Step 16 — Wire Hot Water Control Valve (Units with

Hot Water Coil Only) . . . . . . . . . . . . . . . . . . . . . . .68

Step 17 — Install Supply-Air Temperature Sensor

(Modulating Heat Units Only) . . . . . . . . . . . . . . . . . .68

Step 18 — Install Unit Accessories . . . . . . . . . . . . .68

Step 19 — Install Control Wiring (Optional) . . . . . .68

• CONFIGURE CONTROL TRANSFORMER 

(208V UNITS ONLY)

• ROUTE WIRING

• FIELD USE TERMINAL STRIPS

Step 20 — Install Communication 

Wiring (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . .72

• CARRIER COMFORT NETWORK

• BACNET MS/TP WIRING RECOMMENDATIONS

• BACNET IP/ETHERNET COMMUNICATION

• NON-CCN COMMUNICATION WIRING

CONTROLS OPERATION AND QUICK SETUP . . . .74

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

• NAVIGATION

• TOUCHSCREEN DISPLAY

• VNC VIEWER

• LEGACY CONTROL INTERFACES

• NAVIGATION CONVENTION

• DATA ENTRY

Main Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

• WELCOME SCREEN

• LOGIN SCREEN

• PASSWORDS

• USER LOGINS SCREEN

• MAIN MENU

• HOME SCREEN

• STATUS SCREEN

• SETPOINT SCREENS

• SYSTEM CONFIGURATION SCREENS

• CONTROLLER CONFIGURATION SCREENS

• CONTROLLER ID SCREEN

• START/STOP SCREEN

Control Quick Set Up . . . . . . . . . . . . . . . . . . . . . . . . .81

• STEP A — POWER ON THE CONTROL

• STEP B — LOGIN WITH USER ACCESS LEVEL

• STEP C — SET DAYLIGHT SAVINGS TIME (DST)

(OPTIONAL)

• STEP D — SET DATE AND TIME

WeatherMaster

Advance Refrigerant

CCN

Pg 1

12-24

50V 28-98

™

Control

Replaces: 50V-1SI

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Summary of Contents for Carrier WeatherMaster 50V 28

Page 1 50V 28-98 Optional Electric or Hydronic Heating and Electric Cooling Applied Rooftop Units with Puron ® Advance Refrigerant ™ (R-454B) and Carrier SmartVu Control Installation and Start-up Instructions • ROUTE FIELD WIRING CONTENTS Step 12 — Set Up Pre-Filter Status ...
Page 2 • STEP E — CONFIGURE EQUIPMENT FOR GENERAL FIELD-INSTALLED DEVICES This installation instruction contains basic unit installation infor- • STEP F — CONFIGURE EQUIPMENT FOR mation and basic controls configuration and start-up information. FIELD-INSTALLED SENSORS • STEP G — CONFIGURE INDOOR FAN For additional information on installation, operation, and service, •...
Page 3 Follow all local, state, or federal regulations when transporting appliance. equipment containing A2L refrigerant. Carrier applied RTUs are designed to be transported on a flatbed trailer or flatbed rail car. Ensure the proper safety equipment, driver training, and any re-...
Page 4 the unit size and configuration. See Table 2 for sensor and board Table 1 — Minimum Conditioned Space Area part numbers. The A2L detection sensor communicates via a wir- (MCSA or TA ing harness to the dissipation board and two dissipation control boards.
Page 5 View B View C Power Box Sensor Fig. 2 — A2L Refrigerant Leak Sensor Locations (Sizes 28-34 Shown) Detail A Detail B Detail A — Test Button Detail B — Status LED Fig. 3 — A2L Dissipation Board Details...
Page 6 for requirements for using open plenum return duct systems with equipment with A2L refrigerant. IMPORTANT: An emergency mode, such as emergency stop, fire/smoke shutdown, smoke purge, fire pressurization, or fire evacuation will override dissipation mode. CAUTION All duct dampers, including zone dampers, fire dampers, or back- Do not install ignition sources in the duct distribution system.
Page 7 REFRIGERANT SYSTEM SAFETY The following leak detection methods are deemed acceptable for all refrigerant systems: Prior to, and during the work being performed on an appliance containing A2L refrigerants, the area must be checked with an ap- ELECTRONIC LEAK DETECTORS propriate refrigerant detector to ensure that the person or persons Electronic leak detectors may be used to detect refrigerant leaks.
Page 8 For appliances containing flammable refrigerants, purging shall be Cylinders shall be kept in an appropriate position according achieved by breaking the vacuum in the system with oxygen-free to the instructions. nitrogen and continuing to fill until the working pressure is Ensure that the refrigerating system is earthed prior to achieved, then venting to atmosphere, and finally pulling down to charging the system with refrigerant.
Page 9 Take precautions to prevent condensate formation inside the Contact your local Carrier sales office if you received the wrong unit on panels, electrical components, and motors by: unit, for assistance with freight claims, or for assistance with miss- a.
Page 10 For units without double wall bottom construction, provide weath- er protection for the basepan exterior insulation. Carrier reserves the right to not assume responsibility for equip- SLAB MOUNT UNIT ment damage resulting from improper storage or handling, accu-...
Page 11 The 50V4,V5 units are designed for horizontal supply/return only. guidelines recommend a minimum 2-1/2 equivalent duct diame- Connect to the unit with a single duct for all supply openings and ters of straight duct connected to supply air inlet and outlet open- with a single duct for all return openings.
Page 12 Table 4 — 50V Physical Data — Sizes 28, 30, 34 UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (TONS) 27.5 OPERATING WEIGHT (lb, Med Compact Standard Compact Standard Compact Standard Static IDF, Vertical/Vertical) Chassis Chassis Chassis Chassis Chassis Chassis No Heat Base Unit (50V) lb 4165 4765 4165...
Page 13 Table 4 — 50V Physical Data — Sizes 28, 30, 34 (cont) UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (TONS) 27.5 STANDARD STATIC EXHAUST Compact Chassis Standard Chassis Compact Chassis Standard Chassis Compact Chassis Standard Chassis (OPTIONAL) Fan Type — Backward Curve — Backward Curve —...
Page 14 Table 5 — 50V Physical Data — Sizes 40 and 50 UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (TONS) OPERATING WEIGHT (lb, Med Static Compact Standard Compact Standard IDF, Vertical/Vertical) Chassis Chassis Chassis Chassis No Heat Base Unit (50V) lb 5425 6025 5575 6175 COMPRESSOR Variable Speed + Fixed Speed...
Page 15 Table 5 — 50V Physical Data — Sizes 40 and 50 (cont) UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (TONS) MEDIUM STATIC EXHAUST Compact Standard Compact Standard (OPTIONAL) Chassis Chassis Chassis Chassis Fan Type — Backward Curve — Backward Curve Fan Qty...Diameter (in.) —...
Page 16 Table 6 — 50V Physical Data — Sizes 54 -74 UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (TONS) OPERATING WEIGHT (lb, Med Static IDF, Vertical/Vertical) No Heat Base Unit (50V) 7058 7058 7405 8638 COMPRESSOR Variable Speed + Fixed Speed Variable Speed + Fixed Speed Variable Speed + Fixed Speed Variable Speed + Fixed Speed Refrigerant Circuits Circuit A Type (A1 / A2) Variable Speed / —...
Page 17 Table 6 — 50V Physical Data — Sizes 54 -74 (cont) UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (tons) STANDARD STATIC EXHAUST Standard Static Exhaust Standard Static Exhaust Standard Static Exhaust Standard Static Exhaust (OPTIONAL) Fan Type Backward Curve, Direct Drive Backward Curve, Direct Drive Backward Curve, Direct Drive Backward Curve, Direct Drive Fan Qty...
Page 18 Table 7 — 50V Physical Data — Sizes 90, 98 UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb, Med Static IDF, Vertical/Vertical) No Heat Base Unit (50V) 10,303 10,303 COMPRESSOR Variable Speed + Fixed Speed Variable Speed + Fixed Speed Refrigerant Circuits Circuit A Type (A1 / A2) Variable Speed / Fixed Speed...
Page 19 Table 7 — 50V Physical Data — Sizes 90, 98 (cont) UNIT 50V2,V3,V4,V5 NOMINAL CAPACITY (tons) STANDARD STATIC EXHAUST Standard Static Exhaust Standard Static Exhaust (OPTIONAL) Fan Type Backward Curve, Direct Drive Backward Curve, Direct Drive Fan Qty...Diameter (in.) 2...19.7 2...19.7 Motor Qty...Type 2...EC...
Page 20 Accessory Part No. Unit Type CRRFCURB040A00 48/50V Compact Chassis Fig. 5 — Roof Curb — 50V 27.5-35 Ton Compact Chassis...
Page 21 NOTES: Roof curb is shipped disassembled. Roofcurb: 14ga (VA03-56) STL. Dimensions are inches (millimeters). Installation instructions are shipped with roofcurb. 50V Standard Chassis 50V Standard Chassis With Extension Accessory Part No. Unit Type Dimension Unit Size (28-34) Section 48V Standard Chassis and 19’...
Page 22 Accessory Part No. Unit Type CRRFCURB042A00 48/50V Compact Chassis Fig. 7 — Roof Curb — 50V 40-50 Ton Compact Chassis...
Page 23 NOTES: Roof curb is shipped disassembled. Roofcurb: 14ga (VA03-56) STL. Dimensions are inches (millimeters). Installation instructions are shipped with roofcurb. 50V Standard Chassis 50V Standard Chassis With Extension Section 48V Standard Chassis and 50V Standard Chassis with Plenum Section 48V Standard Chassis with Extension Section Accessory Part No.
Page 24 Accessory Part No. Unit Type Dimension Unit Size (54,60) 50V Standard Chassis 32' 6-7/16" CRRFCURB068A00 19' 5-9/16" 50V Extended Standard Chassis 34' 7-5/8" CRRFCURB069A00 21' 6-3/4" 48V Standard Chassis 35' 11-1/16" CRRFCURB061A00 50V Standard Chassis with Plenum 22' 10-3/16" 48V Extended Standard Chassis 38' 0-1/4"...
Page 25 Accessory Part No. Unit Type Dimensions Unit Size 70-98 24' 5-1/16" 50DJ-901---001 50V Standard Chassis (70 Ton) 19' 5-9/16" 26' 6-1/4" 50DJ-902---641 50V Extended Standard Chassis (70 Ton) 21' 6-3/4" 48V Standard Chassis 27' 9-11/16" 50DJ-901---011 50V Standard Chassis (70 Ton) 22' 10-3/16"...
Page 26 Fig. 11 — Roof Curb — 50V 70-75 Ton Full Perimeter Curb Conversion Kit...
Page 27 Accessory Part No. Unit Type Dimensions Unit Size 70-98 24' 5-1/16" 50DJ-901---001 50V Standard Chassis (70 Ton) 19' 5-9/16" 26' 6-1/4" 50DJ-902---641 50V Extended Standard Chassis (70 Ton) 21' 6-3/4" 48V Standard Chassis 27' 9-11/16" 50DJ-901---011 50V Standard Chassis (75 Ton) 22' 10-3/16"...
Page 28 Gasket material is SLAB included with Carrier accessory knock-down curbs. Otherwise, A MIN. gasket material is field supplied. Be sure all joints and corners of gasket are square and flush to prevent possible air or water leaks.
Page 29 Fig. 15 — 50V 27.5-35 Ton Compact Chassis...
Page 30 Fig. 16 — 50V 27.5-35 Ton Standard Chassis...
Page 31 Fig. 17 — 50V 27.5-35 Ton Extended Standard Chassis...
Page 32 Fig. 18 — 50V 27.5-35 Ton Extended Standard Chassis with Plenum Section...
Page 33 Fig. 19 — 50V 27.5-35 Ton Standard Chassis with Plenum Section...
Page 34 Fig. 20 — 50V 40-50 Ton Compact Chassis...
Page 35 Fig. 21 — 50V 40-50 Ton Standard Chassis...
Page 36 Fig. 22 — 50V 40-50 Ton Extended Standard Chassis...
Page 37 Fig. 23 — 50V 40-50 Ton Standard Chassis with Plenum Section...
Page 38 Fig. 24 — 50V 40-50 Ton Extended Standard Chassis with Plenum Section...
Page 39 Fig. 25 — 50V 55-60 Ton Standard Chassis...
Page 40 Fig. 25 — 50V 55-60 Ton Standard Chassis (cont)
Page 41 Fig. 26 — 50V 55-60 Ton Extended Standard Chassis...
Page 42 Fig. 26 — 50V 55-60 Ton Extended Standard Chassis (cont)
Page 43 Fig. 27 — 50V 55-60 Ton Standard Chassis with Plenum Section...
Page 44 Fig. 27 — 50V 55-60 Ton Standard Chassis with Plenum Section (cont)
Page 45 Fig. 28 — 50V 55-60 Ton Extended Standard Chassis with Plenum Section...
Page 46 Fig. 28 — 50V 55-60 Ton Extended Standard Chassis with Plenum Section (cont)
Page 47 Fig. 29 — 50V 70 Ton Standard Chassis...
Page 48 Fig. 29 — 50V 70 Ton Standard Chassis (cont)
Page 49 Fig. 30 — 50V 70 Ton Extended Standard Chassis...
Page 50 Fig. 30 — 50V 70 Ton Extended Standard Chassis (cont)
Page 51 Fig. 31 — 50V 70 Ton Standard Chassis with Plenum Section and 50V 75 Ton Standard Chassis...
Page 52 Fig. 31 — 50V 70 Ton Standard Chassis with Plenum Section and 50V 75 Ton Standard Chassis (cont)
Page 53 Fig. 32 — 50V 70 Ton Extended Standard Chassis with Plenum and 50V 75 Ton Extended Standard Chassis...
Page 54 Fig. 32 — 50V 70 Ton Extended Standard Chassis with Plenum and 50V 75 Ton Extended Standard Chassis (cont)
Page 55 Fig. 33 — 50V 90-100 Ton Standard Chassis...
Page 56 Fig. 33 — 50V 90-100 Ton Standard Chassis (cont)
Page 57 Fig. 34 — 50V 90-100 Ton Extended Standard Chassis...
Page 58 Fig. 34 — 50V 90-100 Ton Extended Standard Chassis (cont)
Page 59 Step 9 — Install Barometric Relief Hoods  Step 10 — Set Up Power Exhaust (Size 28-98 (Standard or Extended Chassis with Barometric with Standard Static Power Exhaust or Size 28- Relief Only) 50 with Medium Static Power Exhaust Only) Standard chassis units with the barometric relief option ship with Standard chassis units with the slide-out power exhaust option the reliefs rotated inside the unit.
Page 60 Remove panel on the end of the unit below the outdoor air hoods. Save panel and screws. Remove the 2 small panels on the sides of the exhaust open- ing. Save panels and screws. Power Exhaust Remove the small top rail above the exhaust opening. Save Shipping Bracket rail and screws.
Page 61 NOTE: Refer to the label on the disconnect for the torque Step 11 — Route Field Wiring specifications. IMPORTANT: Units with VFD (variable frequency drive) Table 8 — Non-Fused Disconnect Wire Size Range generate, use, and can radiate radio frequency energy. Units not installed and used in accordance with these instructions may DISCONNECT QTY...MAX WIRE SIZE...
Page 62 SHORT CIRCUIT CURRENT PROTECTION IMPORTANT: Unit failure due to operation on improper line Units with Standard Short Circuit Current Rating (SCCR) voltage or excessive phase imbalance constitutes abuse and may Standard units are rated for 10kA short current rating protection. cause damage to electrical components.
Page 63 Control Box post by the power box, to a field-provided disconnect. Carrier rec- ommends mounting the disconnect on a support structure and not to the side of the unit. Make line side power and ground connec- tions at the line side of the disconnect.
Page 64 Table 9 — 50V Electrical Data COMPRESSOR OUTDOOR FAN MOTOR PWRED VOLTAGE RANGE CONTROLS 50V UNIT A1 High Cap A1 Std Cap LOW SOUND V-Ph-Hz SIZE Min. Max. (ea) (ea) 208-3-60 59.7 57.8 — — — — 230-3-60 59.7 57.8 —...
Page 65 Table 9 — 50V Electrical Data (cont) INDOOR FAN MOTOR ELECTRIC HEAT (50V ONLY) POWER EXHAUST 50V UNIT STD STATIC MED STATIC HIGH STATIC HIGH LOW STAT (CPT) LOW STAT (STD) STD STATIC MED STATIC V-Ph-Hz SIZE HP (ea) (ea) (ea) (ea) (ea)
Page 66 Step 12 — Set Up Pre-Filter Status  fittings. Tubing must be run from the appropriate sensing location (in the duct or the building space) to the pressure transducer. Use Switch (Optional) pressure pickup ports (field-supplied) where appropriate. For units with the accessory or optional factory installed pre-filter All tubing connections are made at the high-side pressure pickup status switch, the switch trip pressure must be field set using the port.
Page 67 Step 14 — Set Up Return Air Smoke Detector Step 15 — Connect Hot Water Piping and Acces- (Optional) sories (Hot Water Coil Units Only — Optional) The optional return air smoke detector ships in the shipping orien- Refer to unit certified drawings (Fig. 15-34) for hot water coil con- tation and must be field assembled to the final operating position.
Page 68 Hot Water Coil Only) cient, new wiring can be spliced into the wire harness. If the probe The Carrier SmartVu controls provides a 2-10v output for hot wa- style SAT sensor is not suited for the application or to add an SAT ter valve actuator modulation.
Page 69 removed). Remove the two thumb screws at the top of the cover to detach cover. FIELD USE TERMINAL STRIPS Terminal strips for field use control devices and sensors are in- cludes for each wiring to the unit controls. See “Typical Control Box Layout”...
Page 70 Terminal Block 5 (TB5) See Fig. 60 and Table 11 for TB5 layout and sensor accessory options. TB5 (Terminals 1-10) TB5 (Terminals 11-20) NOT USED TB5 (Terminals 21-30) Fig. 60 — TB5 Layout Table 11 — TB5 Details TERMINALS DEVICE DESCRIPTION Used to command zone dampers to an override position.
Page 71 Terminal Block (TB6) See Fig. 61 and Table 12 for TB6 layout and input options. NOT USED Fig. 61 — TB6 Layout Table 12 — TB6 Input Options TERMINALS DEVICE DESCRIPTION Third-Party Exhaust Fan Used for third-party modulation of exhaust fan speed. Requires input (4-20mA). Only available 1 and 2 Modulation with High Capacity Power Exhaust (HCPE) accessory.
Page 72 C on the COMM board. NOTE: Only one communication protocol can be used at a time. c. Secure the black (–) wire to CCN screw terminal — on CARRIER COMFORT NETWORK the COMM board. ® d. Secure shield wire to CCN screw terminal SHIELD on CCN communication bus wiring consists of shielded, 3-conductor the COMM board.
Page 73 - CCN or BACnet MS/TP (Future) - BACnet MS/TP or Rnet Fig. 63 — Carrier SmartVu ™ Touchscreen Display Interface and Connections Table 14 — MS/TP Wiring Recommendations SPECIFICATION RECOMMMENDATION Cable Single twisted pair, low capacitance, CL2P, 22 AWG (7x30), TC foam FEP, plenum rated cable...
Page 74 Touchscreen SIOB 1-3 LEGACY CONTROL INTERFACES Comm. Display (stacked) Board The SmartVu controls are not compatible with legacy Carrier con- (TB3) trol interfaces, such as the Navigator ™ , TouchPilot ™ , Equipment Touch , or System Touch interfaces.
Page 75 Table 17 — Factory-Installed Air Sensors NAME DESCRIPTION LOCATION PART NUMBER INCLUDED Building Pressure In condenser section on back of power box. HK05ZG022 Exhaust with BP Option Cooling Coil Temperature After evaporator HH79NZ039 x4 Humidi-Mizer Option Return Air Carbon Dioxide (CO ) Return Section HH99ZZ019 RA CO...
Page 76 NAVIGATION CONVENTION or other screens), then go to the System Configuration screen (by pressing the system configuration icon on the main menu screen), This manual provides guidance to access specific screens to per- then go to the Cooling Configuration screen (by pressing the cool- form specific functions.
Page 77 DATA ENTRY Most screens contain data that is editable or selectable between multiple options, such as setpoints and configurations. See Table 19 for interface buttons related to data entry. NOTE: Sufficient access level may be required to modify set- points and settings. Editable data is indicated by a number with a box around it or letters/characters with a box or oval .
Page 78 Table 19 — Data Buttons VIEW NAME ACTION View Only Data None. The data is not editable. Editable Data Brings up the keypad or keyboard for data entry. Password Entry Brings up the keyboard to allow password entry. Inactive Bubble The indicated option is not active.
Page 79 Main Screens WELCOME SCREEN The welcome screen is the first screen shown after Carrier Con- troller is powered on and will be shown for 2-3 minutes. See Fig. 72. The welcome screen will automatically change to the Home screen when the controller has completed initialization.
Page 80 See Advanced Controls, Operation, and SERVICE Contact factory support. Troubleshooting Guide for information on obtaining the service password or contact your local Carrier sales office for emergency service password access. FACTORY Rolling Factory use only.
Page 81 Fig. 77 — Status Screen Fig. 81 — Controller ID Screen Fig. 78 — Setpoint Screen Fig. 82 — Start/Stop Screen Table 21 — Start/Stop Functions FUNCTION DESCRIPTION Off — unit operation is disabled when power is cycled. AUTO RESET On —...
Page 82 NOTE: Configuration changes may require a reboot for the Controls, Operation, and Troubleshooting manual for trouble- change to take effect. Press the reboot button to reboot the shooting steps or contact your Carrier sales office. controller. Field-installed accessories (smoke detector, economizer, phase STEP B —...
Page 83 Table 23 — Daylight Savings Time Configurations CONFIGURATION VALUE DESCRIPTION Daylight savings time is enabled, the system time will automatically Enable be adjusted based on the DST DST Enable configuration. Disable Daylight savings time is not used. Start Month Jan. to Dec. The month that DST will start. The week of the month that DST Start Week 1 to 5...
Page 84 Table 24 — Equipment Configuration by Application ITEM VALUE DESCRIPTION APPLICATION The system monitors local smoke detector input for smoke shutdown.  Enable NOTE: The smoke detector will default to enabled for units with a factory-installed smoke Smoke Detector detector. Disable The system does not monitor the local smoke detector input.
Page 85 STEP F — CONFIGURE EQUIPMENT FOR FIELD-INSTALLED SENSORS   Navigate to the Sensor Configuration screen (Main Menu  System Config Sensor Config). Review the sensor listing and enable or configure any field-installed sensors. See Fig. 86 for sensor configuration screen layout. When finished, click the save changes button at the bottom of the page.
Page 86 Table 25 — Sensor Configurations by Application CONFIGURATION VALUE DESCRIPTION APPLICATION The system monitors a local space temperature (SPT) sensor Enable input. Required for applications where the cool/heat demand Single Zone source is configured for SPT. SPT Sensor The system does not monitor the local space temperature sensor Disable input.
Page 87 Table 26 — Indoor Fan Configurations by Application CONFIGURATION VALUE DESCRIPTION APPLICATION The indoor fan operates at the IDF high cool speed with a cool, vent, or dehum 0 = Constant demand, and the IDF high heat speed with a heat demand. CV IDF control is Single Zone Volume common for process applications, can be used in select single zone applications...
Page 88 Table 26 — Indoor Fan Configurations by Application (cont) CONFIGURATION VALUE DESCRIPTION APPLICATION SAV Low Cool Cap. 0 to 100%, SAV low cool capacity threshold is only used with SAV capacity IDF control. Single Zone Threshold 0% default SAV Med. Cool Cap. 0 to 100%, SAV med.
Page 89 Table 27 — Outdoor Air Damper Configurations by Application CONFIGURATION VALUE DESCRIPTION APPLICATION Ventilation is not performed. This configuration should only be used on 0 = None equipment without an economizer (OAD). The OAD ventilation position is modulated linearly based on the indoor fan speed and IDF/OAD vent positions 1-4 configurations.
Page 90 STEP I — CONFIGURE THE COOLING SYSTEM For single and multi-zone applications, the control can be config- ured to monitor the RARH or SPRH sensor and will compare the Navigate to the Cooling Configuration screen (Main Menu   RH sensor reading to the dehum RH setpoint to determine if there System Config ...
Page 91 Table 28 — Cooling Configurations by Application CONFIGURATION VALUE DESCRIPTION APPLICATION 0 = None (Default) Cooling and heating is disabled. None The control compares the space temperature sensor (SPT) reading to the occupied/unoccupied 1 = SPT cooling (and heating) setpoints to determine if there is a cooling (or heating) demand. Used for Single Zone single-zone applications.
Page 92 STEP K — CONFIGURE THE HEATING SYSTEM (OPTIONAL) For units with a heat source, navigate to the Heating Configuration screen (Main Menu  System ConfigHeating Config). The heater configuration screen will only show if the unit is equipped with a heat source. Set the heater configurations based on the ap- plication requirements.
Page 93 Table 30 — Heater Configurations by Application CONFIGURATION VALUE DESCRIPTION APPLICATION Requires modulating electric or hot water heat.The system monitors the MAT during venting mode. If the MAT is below the vent SAT setpoint by the vent deadband for more than 2 minutes, the system enables the heater to temper the Enable Heat Tempered MAT to the vent SAT setpoint.
Page 94 Table 32 — Free Cooling Configurations CONFIGURATION VALUE DESCRIPTION APPLICATION Enable (Default) The system is allowed to perform free cooling during the occupied period. Occ. Free Cooling Disabled Free cooling is not performed at any time. Enable Free cooling is allowed during the unoccupied period. Unoccupied Free Cooling Disable (Default)
Page 95 STEP N — SET INDOOR FAN SETPOINTS (OPTIONAL) If the unit is configured for SP IDF control, navigate to the Indoor Fan Setpoint screen (Main Menu Setpoints  Indoor Fan Set- points). Adjust the fan setpoints as needed based on application re- quirements.
Page 96 STEP P — SET DEHUMIDIFY SETPOINTS (OPTIONAL) For units with Humidi-MiZer dehumidification, navigate to the Dehumidify Setpoints screen (Main Menu Setpoints Dehum Setpoints). Adjust the dehumidify setpoints based on application requirements. See Fig. 96 for dehumidify setpoint screen layout. When finished, click the save changes button at the bottom of the screen.
Page 97 STEP R — SET EXHAUST FAN SETPOINTS (OPTIONAL) occupied. Adjust the local schedule as needed based on applica- tion requirements. When finished, click the home button to exit to For units with exhaust fans configured for building pressure con- the home screen. When finished, click the save changes button trol, navigate to the exhaust fan setpoint screen (Main MenuSetpointsIndoor Fan Setpoints).
Page 98 Carrier recommends operation. Damage or failures that can be attributed to using equipment designed for specific construction duty or spe-...
Page 99 Cool/Heat Demand Sources High Cool Dmd Start RETURN AIR TEMPERATURE (RAT) The control monitors the RAT and compares the reading to the oc- H.C.ON cupied heating and unoccupied cooling and heating setpoints to Low Cool Dmd Start determine if there is a VAV Cool (occupied only), Low Cool (un- L.C.OF/2 High Cool Dmd Stop occupied only), High Cool (unoccupied only), Low Heat, or High...
Page 100 THERMOSTAT (TSAT) is set to None. TSTAT is recommended for single-zone applica- tions with a thermostat or for third-party control of unit cooling The control monitors the thermostat inputs (Y1, Y2, W1, W2) to and heating. determine if there is a Low Cool, High Cool, Low Heat, or High See Table 41 for available demands for the RAT cool/heat demand Heat demand.
Page 101 Dehumidify Demand Sources RETURN AIR RELATIVE HUMIDITY (RARH) The control monitors RARH and compares it to the dehumidify relative humidity setpoint to determine if there is a dehumidify de- mand. Deadbands are used to adjust when the demand starts and stops compared to the dehumidify setpoint.
Page 102 Table 43 — HSTAT Demand Levels DEMAND START CONDITION STOP CONDITION Y1 or W1 input activates Vent/Dehum. H input is active. H input deactivates. Y2 input activates, Low Cool/Dehum. Y1 and H inputs active. Y1 or H input deactivates. High Cool/Dehum. Y1, Y2, and H inputs are active.
Page 103 STAGED AIR VOLUME (SAV) CAPACITY THIRD-PARTY INPUT CONTROL (THIRD-PARTY) Staged air volume capacity indoor fan is recommended for single- Third-party input control allows a third-party system to enable and zone applications with low sensible heat ratio. This is the default disable the indoor fan and modulate the fan speed under most con- setting for units ordered as SAV.
Page 104 Table 46 — Supply Pressure Indoor Fan Sequence of Operation OCCUPANCY IDF CONFIG. DEMAND CONFIGURATION OPERATION Vent The IDF ramps between min. and max. IDF speed to Low Cool, High Cool, maintain the supply pressure at the supply pressure VAV Cool, Dehumidify control point.
Page 105 Table 48 — Single-Zone VAV Indoor Fan Sequence of Operation OCCUPANCY IDF CONFIG. DEMAND CONFIGURATION OPERATION Vent The IDF operates at the Min IDF Speed. The IDF modulates between the Low Cool IDF speed and the High Cool IDF Low Cool speed based on the space temperature vs the effective cooling setpoint.
Page 106 HEAT TEMPERED COOLING MODE Cooling and Heating Modes All cooling, modulating heating, and venting modes operate to For units in cold climates in applications with constant cooling maintain the unit supply air temperature (SAT) at the SAT control loads, the modulating/multi-stage heat source can be used to pre- point, which is selected based on the effective demand level SAT vent delivery of very cold air to the space with a cooling demand.
Page 107 configuration. The OAD typically does not provide ventilation Dehumidification Modes during the unoccupied period and is closed. See Table 56 for a list For units with Humidi-Mizer, the cooling system operates to of outdoor air damper ventilation control configurations and the maintain the air leaving the evaporator coil at the dehumidify cool associated sequence of operation.
Page 108 Table 57 — Free Cooling Checks NAME CHECK ALLOW FREE COOL PREVENT FREE COOL OAT is at or below the OAT Dry Bulb OAT is above the OAT Dry Bulb Limit Dry Bulb Limit OAT vs Setpoint Limit setpoint for 1 minute. setpoint.
Page 109 Configure Equipment section of the controls quick start guide. If a mode to perform system tests. factory-installed component is missing from this screen, such as the indoor fan, or HGRH valve, contact your local Carrier sales Prior to enabling Service Run, it is recommended to disable unit representative.
Page 110 APPENDIX A — START-UP CONTROL OPERATION (cont) Step 5 — Test Devices Using Service Run Step 6 — Restore Unit Operation Click on the Service Test Menu button on the Start/Stop screen to Navigate back to the Start/Stop screen. Press disable unit to pre- navigate to the Service Test Menu and click on the Test Air Sys- vent unit operation.
Page 111 APPENDIX B — AIR BALANCE INSTRUCTIONS Overview Step 3 — Go to the Service Test Menu The 50V unit uses a belt drive fan system. The fan motor speed is Click on the Service Test Menu button on the Start/Stop screen to modulated using a variable frequency drive (VFD), which is mod- navigate to the Service Test Menu.
Page 112 APPENDIX B — AIR BALANCE INSTRUCTIONS (cont) Table A — Indoor Fan Configurations CONFIGURATION VALUE DESCRIPTION   (Main Menu System Config IDF Config) Minimum speed the IDF can operate at, typically during vent mode. Used for SAV Demand, SAV Capacity, SP, IDF Min.
Page 113 APPENDIX B — AIR BALANCE INSTRUCTIONS (cont) Table D — Exhaust Fan Configurations CONFIG/SETPOINT VALUE DESCRIPTION   (Main Menu System Config EXF Config) The minimum speed the EXF operates at when on, typically based on the ventilation airflow or partial free EXF Min.
Page 114 APPENDIX C — 50V MODEL NUMBER NOMENCLATURE Position: 10 11 12 13 14 16 17 18 Example: Heat Type (1,2) 50 – Packaged Cooling Only/Electric Indoor Air Quality (18) Heat/Hydronic Heat 0 – 4" Pre-Filter Rack with 2” Throwaway Filter 1 –...
Page 115 APPENDIX D — CHARGING CHARTS Table F — Refrigerant Charges (R-454B) V Series Refrigerant Charge (lb) - Standard Capacity Evaporator, Without Humidi-Mizer ® SIZE CIRCUIT A 35.7 32.8 34.6 40.4 29.1 29.2 30.5 36.3 46.0 CIRCUIT B 29.4 29.7 31.00 35.70 46.30 V Series Refrigerant Charge (lb) - Standard Capacity Evaporator, With Humidi-Mizer...
Page 116 APPENDIX D — CHARGING CHARTS (cont) 30 Ton R-454B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating at Full Speed SST= 60°F SST= 45°F SST= 30°F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) Fig.
Page 117 APPENDIX D — CHARGING CHARTS (cont) 40 Ton R-454B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating SST= 60°F SST= 45°F SST= 30°F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) Fig.
Page 118 APPENDIX D — CHARGING CHARTS (cont) 50 Ton R-454B CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating SST= 60°F SST= 45°F SST= 30°F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) Fig.
Page 119 APPENDIX D — CHARGING CHARTS (cont) 55 Ton R-454B CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating SST= 60°F SST= 45°F SST= 30°F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) (°F) Fig.
Page 120 APPENDIX D — CHARGING CHARTS (cont) 60 Ton R-454B 48/50V CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating ° SST= 60 ° SST= 45 ° SST= 30 Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F)
Page 121 APPENDIX D — CHARGING CHARTS (cont) 70 Ton R-454B 48/50V CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating SST= 60°F SST= 45°F SST= 30°F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) Fig.
Page 122 APPENDIX D — CHARGING CHARTS (cont) 75 Ton R-454B 48/50V CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating SST= 60°F °F SST= 45°F °F SST= 30°F °F Reduce Charge if Above Curve Add Charge if Below Curve Outdoor Air Temperature (°F) °F)
Page 124 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500489-01 Printed in U.S.A. Form No. 50V-2SI Pg 124 12-24 Replaces: 50V-1SI...
Page 125 (The pre-start-up checklist must be completed by installing contractor. For Carrier factory start-up, the pre-start-up checklist must be submitted to the Carrier start-up team prior to arranging start-up. Please review to the unit submittal or air balance report for airflow information.)
Page 126 Verify packing materials have been removed from the unit. (Y/NA) _____ Verify the unit is free of damage. If damage exists, contact your local Carrier sales representative. (Y/NA) _____ Verify the unit has been installed in accordance with the service clearances in the installation instructions.
Page 127 Factory-Installed Options (If Equipped) 1. For units with economizer, the outdoor air hood and screens have been installed and are clear, and the outdoor air damper and return air dampers move freely without binding. (Y/N) _____ 2. For units with barometric relief, the relief hoods have been installed and the dampers are free to open. (Y/N) _____ 3.
Page 128 III. CONTROL CONFIGURATION Fill in the tables to indicate the unit control configurations that are set as part of the prestart-up setup. Control and configuration setup are not included in factory start-up. Schedule Outdoor Air Damper Configurations CONFIGURATION VALUE APPLICATION CONFIGURATION VALUE ...
Page 129 Dehumidify Configurations Exhaust Fan Configurations CONFIGURATION VALUE CONFIGURATION VALUE     (Main Menu System Config Dehum Config) (Main Menu System Config Exhaust Fan Config) 0=None 0 = None 1 = HSTAT 1 = 2-Stage Demand Source Exhaust Fan Control 2 = RARH 2 = Third-Party 3 = SPRH...
Page 130 IV. CONTROL SETPOINTS Fill in the tables to indicate the unit control setpoints that are set as part of the pre-start-up setup. Control and setpoint setup not included in factory start-up. Free Cooling Setpoints Dehumidify Setpoints     (Main Menu System Config Free Cool Config)
Page 131 START-UP CHECKLIST To be completed by installing contractor or Carrier Factory Service. A copy of the checklist, start-up checklist, and log must be provided to the Carrier start-up team after start-up has been completed. WARNING: To avoid injury to personnel and damage to equipment or...
Page 132 START-UP LOG ELECTRICAL Incoming Voltage L1-L2_____________L1-L3_____________L2-L3_____________ Average Voltage L1 _________________ (L1-L2+L1-L3+L2-L3)/3 Voltage Tolerance L1 _________________(Average Voltage-Nameplate Voltage)/Nameplate Voltage Voltage Imbalance L1 _________________(Maximum Deviation Voltage/Average Voltage) x 100 The Maximum Deviation Voltage is the voltage that is furthest away from the Average Voltage. IMPORTANT: Do not proceed with start-up if voltage tolerance or imbalance exceeds 10%.
Page 133 Circuit A Compressor 1 Voltage L1-L2_____________L1-L3_____________L2-L3_____________Amps________A Compressor 2 Voltage L1-L2_____________L1-L3_____________L2-L3_____________Amps________A Suction Line Temp_______°F Press_______PSIG Superheat_______°F Liquid Line Temp_______°F Press_______PSIG Subcooling_______°F Discharge Line Temp_______°F Press_______PSIG Circuit B Compressor 1 Voltage L1-L2_____________L1-L3_____________L2-L3_____________Amps________A Compressor 2 Voltage L1-L2_____________L1-L3_____________L2-L3_____________Amps________A Suction Line Temp_______°F Press_______PSIG Superheat_______°F Liquid Line Temp_______°F Press_______PSIG Subcooling_______°F Discharge Line Temp_______°F Press_______PSIG...
Page 134 16. Install new filters per project specifications prior to final occupancy. (Y/N)_____ NOTE: Carrier reserves the right to not assume responsibility for equipment damage resulting from abuse of the product when used for temporary heating or cooling, improper equipment operation (including application, airflows, or temperatures), operation when the proper pre-start-up and start-up have not been completed, or damage caused by improper operation or lack of maintenance.

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