Carrier WeatherMaster Series Installation Instructions Manual
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Carrier WeatherMaster Series Installation Instructions Manual

Carrier WeatherMaster Series Installation Instructions Manual

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50HC
WeatherMaster
Series
R
Single Package Rooftop
Cooling Only
with Puronr (R ---410A) Refrigerant
Sizes 07, 08, 09, 11, 12
50HC 11 and 12 size units for installation in the United States contain use of Carrier's Staged
Air Volume (SAV™) 2-speed indoor fan control system. This complies with the U.S.
Department of Energy (DOE) efficiency standard of 2018.
50HC 11 and 12 size units for installation outside the United States may or may not contain
use of the SAV 2-speed indoor fan control system as they are not required to comply with the
U.S. Department of Energy (DOE) efficiency standard of 2018.
For specific details on operation of the Carrier SAV 2-speed indoor fan system refer to the
Variable Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation,
Setup and Troubleshooting manual.
NOTE: Read the entire instruction manual before starting
the installation.

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Summary of Contents for Carrier WeatherMaster Series

  • Page 1: Table Of Contents

    Sizes 07, 08, 09, 11, 12 Installation Instructions 50HC 11 and 12 size units for installation in the United States contain use of Carrier's Staged Air Volume (SAV™) 2-speed indoor fan control system. This complies with the U.S. Department of Energy (DOE) efficiency standard of 2018.
  • Page 2 EconoMi$er X (Factory- - Installed Option) ..Field Connections ......Product Description .

  • Page 3: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, ELECTRICAL SHOCK HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury Failure to follow this warning could cause personal or property damage. Consult a qualified installer, service injury or death.

  • Page 4: Rated Indoor Airflow (Cfm)

    Rated Indoor Airflow (cfm) Model Number Full Load Airflow (cfm) 50HC*A/B/F07 2400 The table to the right lists the rated indoor airflow used 50HC*D/E/G07 2400 for the AHRI efficiency rating for the units covered in this document. 50HC*D/E/G08 3000 50HC*D/E/G09 3000 50HC*D/E11 3000...
  • Page 5 C160137 Fig. 2 - - Unit Dimensional Drawing — Sizes 07- - 09...
  • Page 6 C160138 Fig. 2 - - Unit Dimensional Drawing — Sizes 07- - 09 (cont)
  • Page 7 C13296 Fig. 3 - - Unit Dimensional Drawing — Sizes 11 and 12...
  • Page 8 C13297 Fig. 3 - - Unit Dimensional Drawing — Sizes 11 and 12 (cont)

  • Page 9: Installation

    C08337 LOCATION DIMENSION CONDITION 48 in (1219 mm) Unit disconnect is mounted on panel 18 in (457 mm) No disconnect, convenience outlet option 18 in (457) mm Recommended service clearance 12 in (305 mm) Minimum clearance 42 in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36 in (914 mm) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)

  • Page 10: Curb- - Mounted Installation

    Table 1 – Operating Weights UNITS LB (KG) 50HC* 11/12 Base Unit 715 (324) 860 (390) 860 (390) 1025 (466) Economizer Vertical 75 (34) 75 (34) 75 (34) 75 (34) Horizontal 122 (55) 122 (55) 122 (55) 122 (55) Powered Outlet 35 (16) 35 (16) 35 (16)
  • Page 11 C13311 Fig. 6 - - Roof Curb Details — Sizes 07- - 12...

  • Page 12: Alternate Unit Support (In Lieu Of Curb Or Slab Mount)

    Alternate Unit Support WARNING (In Lieu of Curb or Slab Mount) — A non- - combustible sleeper rail can be used in the unit curb PERSONAL INJURY HAZARD support area. If sleeper rails cannot be used, support the long Failure to follow this warning could cause personal sides of the unit with a minimum of 3 equally spaced 4- - in.

  • Page 13: Positioning On Curb

    C06005 DIMENSIONS MAX WEIGHT UNIT IN . IN . IN . 50HC*(A,B,D,E)07 1130 88.0 2235 43.0 1090 41.5 1055 50HC*(D,E)08 1340 88.0 2235 43.0 1090 49.5 1255 50HC*(D,E)09 1340 88.0 2235 43.0 1090 49.5 1255 50HC*(D,E)11/12 1580 88.0 2235 31.5 49.5 1255 NOTES:...

  • Page 14: Step 8 - Install Outside Air Hood

    Step 8 — Install Outside Air Hood Economizer Hood and Two- - Position Hood — NOTE: If the power exhaust accessory is to be installed Economizer and Two Position Damper Hood on the unit, the hood shipped with the unit will not be Package Removal and Setup —...

  • Page 15: Step 9 - Install External Condensate Trap And Line

    5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position MINIMUM PITCH 1˝ (25 mm) PER past the open filter clips. Close the filter clips to lock BASE RAIL 10´...

  • Page 16: Units With Factory- - Installed

    Field power wires will be connected at the line- - side pressure Units without Single Point Box, Disconnect or HACR Option lugs on the power terminal block or at factory- - installed option non- - fused disconnect or HACR. Equip GR Lug Field power wires are connected to the unit at line- - side pressure lugs on compressor contactor C and indoor fan...
  • Page 17 C12284 Fig. 18 - - Location of Non- - Fused Disconnect Enclosure C12285 Fig. 20 - - Location of HACR Enclosure To field install the NFD shaft and handle: To field install the HACR shaft and handle: 1. Remove the unit front panel (see Fig. 2 on page 5 or 1.

  • Page 18: Non- - Fused Disconnect Or Hacr

    All Units — electrical components. Such operation would invalidate any applicable Carrier warranty. All field wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) on the NOTE: Check all factory and field electrical connections unit informative plate.
  • Page 19 Unit- - powered type: A unit- - mounted transformer is Fuse on power type: The factory fuse is a Bussman factory- - installed to stepdown the main power supply “Fusetron” T- - 15, non- - renewable screw- - in (Edison base) voltage to the unit to 115- - v at the duplex receptacle.

  • Page 20: Hacr

    This device can be a thermostat (field- - supplied) or a PremierLinkt controller (available as factory- - installed option or as field- - installed accessory, for use on a Carrier Comfort Network (CCN) or as a stand- - alone control) or...

  • Page 21: Central Terminal Board

    through ceramic insulators, limit switches and one or two Central control contactors. One or two heater modules may be used Terminal Typical in a unit. Board Thermostat RACEWAY Connections (Note 2) O/B/Y2 (Note 1) HOLE IN END PANEL (HIDDEN) T–STAT C08027 Note 1: Typical multi-function marking.

  • Page 22: Single Point Boxes And Supplementary Fuses

    to accessory heater and Single Point Box installation DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH instructions details connections LOCATION HEATER COVERS field- - installed electric heat accessory. CONTROL BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT...

  • Page 23: Humidi- -Mizer R System Control Connections

    R and the PNK/BLK lead to the LTLO (low temperature cooling lockout) switch with field- - supplied wire nuts. Refer to the installation instructions included with the Carrier Edge Pro Thermidistat device for more information. Field Connections for Field-Installed Electric Heat Elec Htr...
  • Page 24 C160116 Fig. 37 - - Typical Humidi- - MiZer Adaptive Dehumidification System Humidistat Wiring Edge Programable Thermostat Unit CTB THERMOSTAT O/W2/B SRTN Humidi-MiZer™ FIOP *Connection not required. C13066 Fig. 38 - - Typical Rooftop Unit with Humidi- - MiZer Adaptive Dehumidification System with Edge Pro Thermidistat Device...

  • Page 25: Economi$Er R X (Factory- -Installed Option)

    EconoMi$er X (Factory- -Installed Option) Specifications W7220 Economizer Module — The module is designed for use with 2 to 10 Vdc or bus communicating actuator. The module includes terminals for CO sensor, mixed air sensor, and an outdoor dry bulb sensor.

  • Page 26: Outputs

    Outputs — Table 3 – Economizer Module - - Left Hand Terminal Blocks Actuator signal: 2- - 10 Vdc; minimum actuator impedance is 2k ohm; bus two- - wire output for bus communicating Label Type Description actuators. Top Left Terminal Block Exhaust fan, Y1, Y2 and AUX1 O: 20k NTC Supply Air Temperature Sensor...

  • Page 27: Co 2 Sensor Wiring

    for the power supplies are common. See Fig. 42 for CO sensor wiring. SENSOR (HOT) BLACK YELLOW ANALOG BROWN – Switch ORANGE Label GREEN POWER SUPPLY. PROVIDE DISCONNECT Switches MEANS AND OVERLOAD PROTECTION AS REQUIRED. C14158 Fig. 42 - - Wiring for CO Sensor Interface Overview This section describes how to use the economizer’s user...

  • Page 28: Menu Structure

    To use the keypad when working with menus: S SYSTEM SETUP S Press the (Up arrow) button to move to the previous S ADVANCED SETUP menu. S CHECKOUT S Press the (Down arrow) button to move to the next S ALARMS menu.
  • Page 29 Table 7 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS COOL Y1 ---IN ON/OFF FIRST STAGE COOLING DEMAND (Y1---IN) (cont) Y1---I signal from space thermostat or unitary controller for Cooling Stage 1. = 24 Vac on terminal Y1---I OFF = 0 Vac on terminal Y1---I COOL Y1 ---OUT...
  • Page 30 Table 7 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SETPOINTS MAT SET 53_F 38 to 70_F; SUPPLY AIR SETPOINT (12_C) (3 to 21_C) Setpoint determines where the economizer will modulate the OA damper to increment by 1 maintain the mixed air temperature.
  • Page 31 Table 7 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SYSTEM INSTALL 01/01/10 Display order = MM/DD/YY SETUP Setting order = DD, MM, then YY . UNITS DEG _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.
  • Page 32 Table 7 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ADVANCED MAT T CAL 0.0_F +/ ---2.5_F SUPPLY AIR TEMPERATURE CALIBRATION SETUP (or C) (+/ ---1.4_C) Allows for the operator to adjust for an out of calibration supply air (cont) temperature (SAT) sensor OAS T CAL...
  • Page 33 Table 7 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ALARMS(#) Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using S---Bus sensors, “SYLK”...

  • Page 34: Sequence Of Operation

    Table 8 – Damper Minimum Position Settings and Readings on Checkout Menu Demand Controlled Ventilation Fan Speed Setpoints Checkout Sensor) MIN POS VMAX ---HS MIN POS H VMAX ---HS MIN POS L VMAX ---LS VENT MIN VMIN ---HS VENT MAX VMAX ---HS VENT MIN H VMIN ---HS...
  • Page 35 Table 11 – Enthalpy Operation No DCV (CO Sensor) - - 1 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed...
  • Page 36 Table 13 – Dry Bulb Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed...
  • Page 37 Table 15 – Enthalpy Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed High...

  • Page 38: Enthalpy Settings

    ECONOMIXING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE C12015 Fig. 44 - - Single Enthalpy Curve and Boundaries Table 17 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units) Point P1 Point P2 Enthalpy Temp.

  • Page 39: Checkout

    After the delay one of two actions will happen: NOTE: See “Interface Overview” on page 27 for information about menu navigation and use of the keypad. S The Y2 In call will be satisfied with the damper 100% To perform a Checkout test: open and fan on high speed and the call will turn off 1.

  • Page 40: Low Ambient Control (Factory Option)

    Low Ambient Control (Factory Option) option, refer to the Variable Frequency Drive (VFD) Installation, Start- - Up and Service Instructions. If the unit comes with Electro- - Mechanical (EM) control, ComfortLink (Factory- -Installed Option) then no adjustment is necessary. If the unit comes with PremierLinkt or RTU Open For details on operating 50HC units equipped with the controller option, then refer to its installation control factory- - installed ComfortLink option, refer to Controls,...
  • Page 41 C160117 Fig. 46 - - Typical ComfortLink Control Wiring Diagram (50HC*08/09 shown)
  • Page 42 C160118 Fig. 47 - - Typical 50HC ComfortLink Control Power Wiring Diagram with Optional with Humidi- - MiZer System — (208/230V, 460V - - 3 Ph - - 60 Hz shown)

  • Page 43: Premierlinkt Controller (Factory- - Installed Option)

    FIOP/accessory EconoMi$er 2 package. function of the standard unit control board. CCN service The PremierLink controller requires the use of a Carrier access tools include System Pilott, Touch Pilott and electronic thermostat or a CCN connection for time Service Tool. (Standard tier display tools Navigatort and broadcast to initiate its internal timeclock.
  • Page 44 C160119 Fig. 50 - - Typical PremierLinkt Control Wiring Diagram...
  • Page 45 C160120 Fig. 51 - - Typical PremierLinkt Control Wiring Diagram with Humidi- - MiZer System Option...

  • Page 46: Supply Air Temperature (Sat) Sensor

    Supply Air Temperature (SAT) Sensor — NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating On FIOP- - equipped 50HC unit, the unit is supplied with a devices. Be sure the probe tip does not come in contact supply- - air temperature (SAT) sensor (33ZCSENSAT).
  • Page 47 Digital, 5VDC LEGEND: --- Space Temperature Sensor FSD --- Fire Shutdown --- Space Temperature Sensor IAQ --- Indoor Air Quality (CO --- Carrier Comfort Network (communication bus) OAQ --- Outdoor Air Quality (CO CMPSAFE --- Compressor Safety RH --- Relative Humidity...
  • Page 48 AUX OUT (Power Exhaust) (Output) Discrete 24VAC CCN --- (BLK) Digital, 5VDC LEGEND: Carrier Comfort Network (communication bus) RH --- Relative Humidity Thermostat Fan W1 --- Thermostat Heat Stage 1 Indoor Air Quality (CO W2 --- Thermostat Heat Stage 2...

  • Page 49: Space Sensors

    Space Sensors — J6-7 The PremierLinkt controller is factory- - shipped configured for Space Sensor Mode. A Carrier T- - 55 or T- - 56 space sensor must be used. T- - 55 space temperature sensor J6-6 provides a signal of space temperature to the PremierLink Jumper controller.

  • Page 50: Economizer Controls

    Economizer Controls To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 58. Connect the 4- - 20 mA terminal to Indoor Air Quality (CO ) Sensor — terminal TB1- - 9 and connect the SIG COM terminal to The indoor air quality sensor accessory monitors space terminal TB1- - 11.

  • Page 51: Space Relative Humidity Sensor Or Humidistat Connections

    The sensor must be mounted vertically on the wall. The OAQ Sensor/RH Sensor Carrier logo should be orientated correctly when the J5-2 sensor is properly mounted. Avoid corner locations. Allow at least 4 ft between the J5-3 sensor and any corner. Airflow near corners tends to be 24 VAC reduced, resulting in erratic sensor readings.

  • Page 52: Filter Status Switch

    4000 ft, with no more than 60 total J4-6 devices on any 1000- - ft section. Optically isolated RS- - 485 repeaters are required every 1000 ft. C08118 Fig. 65 - - PremierLink Controller Wiring Fan Pressure NOTE: Carrier device default is 9600 baud. Switch Connection...
  • Page 53 Communications Bus Wire Specifications: The CCN Connecting CCN bus: Communication Bus wiring is field- - supplied and NOTE: When connecting the communication bus cable, field- - installed. It consists of shielded 3- - conductor cable a color code system for the entire network is with drain (ground) wire.

  • Page 54: Rtu Open Controller System

    RTU Open Controller System efficiency. RTU Open enables the unit to run in 100% stand- - alone control mode, Carrier’s i- - Vu Open network, or a Third Party Building Automation System (BAS). The RTU Open controller is factory- - mounted in the 50HC On- - board DIP switches allow you to select your protocol unit’s main control box (see Fig.
  • Page 55 C160121 Fig. 70 - - Typical RTU Open Controller Wiring Diagram...
  • Page 56 C160122 Fig. 71 - - Typical RTU Open Controller Wiring Diagram with Humidi- - MiZer System Option...

  • Page 57: Supply Air Temperature (Sat) Sensor

    Refer to the input configuration and accessory sections of the RTU Open Multi ---Protocol Controller Controls, Start ---Up, Operation and Troubleshooting manual for more detail. Outdoor Air Temperature (OAT) Sensor — The RTU Open controller requires the use of a Carrier space sensor. A standard thermostat cannot be used with...

  • Page 58: Field Connections

    Space Temperature (SPT) Sensors — separate, isolated power supply of 24 VAC. See Fig. 74 There are two types of SPT sensors available from Carrier, for internal connections at the T- - 59. Connect the SEN resistive input non-communicating (T55, T56, and T59) terminal (BLU) to the RTU Open controller at J20- - 1.

  • Page 59: Outdoor Air Quality Sensor

    Do not mount the IAQ sensor in drafty areas such as near The OAQ sensor is packaged with an outdoor cover. See supply ducts, open windows, fans, or over heat sources. Fig. 60. The outdoor air CO sensor must be located in the Allow at least 3 ft (0.9 m) between the sensor and any economizer outside air hood.

  • Page 60: Smoke Detector/Fire Shutdown (Fsd)

    MOUNTING HOLES WIRING OPENING Vin - J4-1 or J4-4 24Vdc - J4-2 or J4-5 -20mA output C11087 Fig. 78 - - Space Relative Humidity Sensor Typical Wiring J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-) 4 to 20 mA Current Loop Output to RTU-OPEN Relative Humidity Sensor (Polarized Male Connector)

  • Page 61: Connecting Discrete Inputs

    Connecting Discrete Inputs — must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory. A 24vac source Filter Status: filter status accessory must be provided to J11- - 2 on the RTU Open controller field- - installed accessory.

  • Page 62: Local Access

    Local Access Wall Mounted Equipment Toucht Interface: The Equipment Touch interface is a wall- - mounted interface used to connect to the RTU Open controller to access the control information, read sensor values, and maintenance. This is an accessory interface that does not come with the RTU Open controller.

  • Page 63: Outdoor Air Enthalpy Control

    Table 24 – LEDs The LEDs on the RTU Open Controller show the status of certain functions. If this LED is on... Status is... Power The RTU Open controller has power The RTU Open controller is receiving data from the network segment The RTU Open controller is transmitting data over the network segment The binary output is active The Run and Error LEDs indicate control module and network status.

  • Page 64: Smoke Detectors

    To wire the return air enthalpy sensor, perform the Return Air following: Smoke Detector (as shipped) 1. Use a 2- - conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller. 2.

  • Page 65: Step 12 - Install Accessories

    EconoMi$er IV Occupancy Switch — Phase monitor control Winter Start kit Refer to Fig. 88 for general EconoMi$er IV wiring. Refer to separate installation instructions for information External occupancy control is managed through a on installing these accessories. connection on the Central Terminal Board. Step 13 —...
  • Page 66 C160146 Fig. 89 - - V- - Belt Force Label BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 90 - - Belt Drive Motor Mounting Catalog No: 50HC ---7---12---06SI ECarrier Corporation 2017 Edition Date: 12/17 Printed in U.S.A.

  • Page 67: Start- - Up Checklist

    START-UP CHECKLIST (Remove and Store in 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 judgement, follow safe practices, and adhere to the safety considerations/information as outlined in the preceding sections of this Installation Instructions document.
  • Page 68 III. HUMIDI- -MIZER SYSTEM START-UP STEPS j 1. CHECK CTB FOR JUMPER 5, 6, 7 JUMPER 5, 6, 7 MUST BE CUT AND OPEN j 2. OPEN HUMIDISTAT CONTACTS j 3. START UNIT IN COOLING (CLOSE Y1) OBSERVE AND RECORD A.

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