Carrier WeatherMaster 50GE-17 Series Installation Instructions Manual
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Carrier WeatherMaster 50GE-17 Series Installation Instructions Manual

Carrier WeatherMaster 50GE-17 Series Installation Instructions Manual

Single package rooftop cooling only with puron advance r-454b refrigerant and ecoblue fan technology
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Job-Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . 19
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 19
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . 20
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . 24
ELECTRIC HEATERS
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 24
(Factory Option) . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Step 9 - Assemble Barometric Hood . . . . . . . . . . 26
CONFIGURATION)
Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
®
Control Connections . . . . . . . . . . . . 34
Typical Unit Wiring Diagrams . . . . . . . . . . . . . . . . . 34
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500431-01
Installation Instructions
Printed in U.S.A.
Form No. 50GE-17-28-01SI Rev B
WeatherMaster
Single Package Rooftop Cooling Only
with Puron Advance™ (R-454B) Refrigerant
and EcoBlue™ Fan Technology
Leak Dissipation System . . . . . . . . . . . . . . . . . . . . .43
Page
EconomizerONE (Factory Option) . . . . . . . . . . . . . .46
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
EconomizerONE Occupancy Switch . . . . . . . . . . . .67
Step 12 - Install Accessories . . . . . . . . . . . . . . . . .67
Step 13 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .67
COMPRESSOR ROTATION . . . . . . . . . . . . . . . . . . . .69
PRESSURE RELIEF VALVES . . . . . . . . . . . . . . . . . .70
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . .70
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
in instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
®
50GE-*17-28
. When you see this symbol on the unit and
Pg 1
3-25
Replaces: New

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  • Page 1: Table Of Contents

    ® WeatherMaster 50GE-*17-28 Single Package Rooftop Cooling Only with Puron Advance™ (R-454B) Refrigerant and EcoBlue™ Fan Technology Installation Instructions • REHEAT CONTROL CONTENTS Leak Dissipation System .....43 Page •...

  • Page 2: Electrical Shock Hazard

    DANGER AVERTISSEMENT ELECTRICAL SHOCK HAZARD Soyez prudent lors de l’entretien des bornes du compresseur. Les anomalies du système ou du compresseur peuvent déloger Failure to follow this warning will result in personal injury or les bornes, permettant à l’huile et au réfrigérant de s’évacuer death.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Type Packaging Compliance 50 — Cooling with Optional Electric Heat 0 = Standard Model Series - WeatherMaster ® Electrical Options GE — Mid Tier Puron Advance™ A = None B = HACR Breaker C = Non-Fused Disconnect (NFDC) Electric Heat Size...
  • Page 4 Fig. 2 — 50GE-*17 Vertical Airflow...
  • Page 5 Fig. 3 — 50GE-*17 Horizontal Airflow...
  • Page 6 Fig. 4 — 50GE-*17 Back View and Condensate Drain Location...
  • Page 7 Fig. 5 — 50GE-*17 Corner Weights and Clearances...
  • Page 8 Fig. 6 — 50GE-*17 Bottom View...
  • Page 9 Fig. 7 — 50GE-*20, 24 Vertical Airflow...
  • Page 10 Fig. 8 — 50GE-*20, 24 Horizontal Airflow...
  • Page 11 Fig. 9 — 50GE-*20, 24 Back View and Condensate Drain Location...
  • Page 12 Fig. 10 — 50GE-*20, 24 Corner Weights and Clearances...
  • Page 13 Fig. 11 — 50GE-*20, 24 Bottom View...
  • Page 14 Fig. 12 — 50GE-*28 Vertical Airflow...
  • Page 15 Fig. 13 — 50GE-*28 Horizontal Airflow...
  • Page 16 Fig. 14 — 50GE-*28 Back View and Condensate Drain Location...
  • Page 17 Fig. 15 — 50GE-*28 Corner Weights and Clearances...
  • Page 18 Fig. 16 — 50GE-*28 Bottom View...

  • Page 19: Installation

    CURB-MOUNTED INSTALLATION INSTALLATION Install curb Job-Site Survey Install field-fabricated ductwork inside curb Complete the following checks before installation. Install accessory thru-base service connection package Consult local building codes and the NEC (National Elec- (affects curb and unit) (refer to accessory installation instruc- trical Code) ANSI/NFPA 70 for special installation tions for details) requirements.

  • Page 20: Step 4 - Provide Unit Support

    panel, see Fig. 18. See Fig. 2-16 for basepan knockout locations Step 4 — Provide Unit Support for location. Attach the service connections to the basepan. ROOF CURB MOUNT Accessory roof curb details and dimensions are shown in Fig. 19-21. Assemble and install accessory roof curb in accor- Hood Carton Location Control Box dance with instructions shipped with the curb.
  • Page 21 Fig. 19 — Roof Curb Details — Size 17 Units...
  • Page 22 Fig. 20 — Roof Curb Details — Size 20 and 24 Units...
  • Page 23 Fig. 21 — Roof Curb Details — Size 28 Units...

  • Page 24: Step 5 - Field Fabricate Ductwork

    Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not WARNING exceed 0.5 in. wg (87 Pa) with or without economizer. PERSONAL INJURY HAZARD For vertical ducted applications, secure all ducts to roof curb and building structure.

  • Page 25: Positioning On Curb

    POSITIONING ON CURB Position unit on roof curb so that the following clearances are maintained: 1/4 in. (6 mm) clearance between the roof curb and Hood Top the base rail inside the front and back, 5/16 in. (8 mm) clearance Shipping Position between the roof curb and the base rail inside the left and right.

  • Page 26: Step 9 - Assemble Barometric Hood

    12. Install outdoor air screens by sliding them into each of the Step 9 — Assemble Barometric Hood four spaces created by the hood, filter support and central The barometric hood can be assembled in vertical or horizontal retainers. To do so, first insert the air screens into pocket cre- configuration.

  • Page 27: Barometric Hood

    NOTE: This panel is not used for horizontal return applications. Remove the screen from the provided panel and install it over the relief opening cut in return duct. Using the blade brackets, install the relief damper onto the side of the return duct (see Fig. 35). The two brackets and relief damper are provided with the economizer.

  • Page 28: Step 11 - Make Electrical Connections

    FIELD POWER SUPPLY If equipped with optional powered convenience outlet: the power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads accord- ing to required operation of the convenience outlet. If an always- energized convenience outlet operation is desired, connect the source leads to the line side of the unit-mounted disconnect.

  • Page 29: Units With Factory-Installed Non-Fused Disconnect Or Hacr

    within sight of the unit per national or local codes. Do not cover To field install the HACR shaft and handle: unit informative plate if mounting the disconnect on the unit Open the control box panel. cabinet. Make sure the HACR shipped from the factory is at OFF UNITS WITH FACTORY-INSTALLED NON-FUSED...

  • Page 30: Convenience Outlets

    Failure to follow this caution may result in equipment damage. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any Disconnect applicable Carrier warranty. per NEC CONVENIENCE OUTLETS Ground (GR)

  • Page 31: Factory-Option Thru-Base Connections

    permit service tool cords to exit the cover. Check for full closing and latching. GFCI Receptacle Cover — While-In-Use Not Included Weatherproof Gasket Baseplate For GFCI Receptacle Fig. 45 — Weatherproof Cover Installation Non unit-powered type Requires the field installation of a general-purpose 125-v 15-A circuit powered from a source elsewhere in the building.
  • Page 32 This device can be a thermostat (field-supplied) or a SystemVu™ 75 ft (23 m), use no. 14 AWG insulated wire (35°C minimum). All controller (available as factory-installed option for use on a Carrier wire sizes larger than no. 18 AWG cannot be directly connected to Comfort Network ®...

  • Page 33: Electric Heaters

    to a 208-v power supply, the control transformer must be rewired by moving the black wire with the 1/4 in. female spade connector Electric Heater Tracks from the 230-v connection and moving it to the 208-v 1/4 in. male terminal on the primary side of the transformer. Refer to unit label diagram for additional information.

  • Page 34: Humidi-Mizer ® Control Connections

    Humidistat This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint, see Fig. 54) or a com- bination thermostat-humidistat control device such as Carrier’s Edge ® Pro Thermidistat™ device with isolated contact set for dehumidification control (see Fig.
  • Page 35 Fig. 58 — Typical 50GE-*17-28 Control Wiring Diagram, Electromechanical with POL224 Controller...
  • Page 36 Fig. 59 — Typical 50GE-*17-24 Power Wiring Diagram, Electromechanical Controller...
  • Page 37 Fig. 60 — Typical 50GE-*28 Power Wiring Diagram, Electromechanical Controller...
  • Page 38 Fig. 61 — Typical 50GE-*17-28 Control Wiring Diagram, SystemVu™ Controller...
  • Page 39 Fig. 62 — Typical 50GE-*17-24 Power Wiring Diagram, SystemVu™ Controller...
  • Page 40 Fig. 63 — Typical 50GE-*28 Power Wiring Diagram, SystemVu™ Controller...

  • Page 41: Humidi-Mizer Dehumidification System

    Humidi-MiZer Dehumidification System  DEHUM/MECH COOLING (SUBCOOLING) MODE (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 42 Indoor Supply Valve Condenser Coil Hot Gas Reheat Coil Outdoor Air Expansion Valve (TXV) Compressor Evaporator Coil = Closed Valve = Open Valve Indoor Return Air = 3-Way Valve Fig. 65 — Subcooling Mode – Humidi-MiZer System for 50GE 17-28 Indoor Supply Valve Condenser Coil...

  • Page 43: Leak Dissipation System

    SEQUENCE OF OPERATION Leak Dissipation System 50GE units use R-454B refrigerant. These units are equipped with The control functions as an R-454B refrigerant dissipation system. a factory installed R-454B leak dissipation system to ensure safe If the refrigerant detection sensor sends a signal indicating a re- operation in the event of a refrigerant leak.
  • Page 44 See Detail A See Detail B Detail A — Test Button Detail B — Status LED Fig. 70 — Dissipation Control Board Press the Test button on the dissipation system control board to en- Ensure that the unit is able to meet the minimum required dissipa- sure proper dissipation system operation under each test condition tion mode airflows.

  • Page 45: Troubleshooting

    Table 6 details the required operational checks to ensure proper dissipation system function. Table 6 — Dissipation System Required Operational Checks NORMAL OPERATION UNIT INDOOR ELECTRIC/ TEST NO. COMPRESSOR DEMAND GAS HEAT None Cool Heat DISSIPATION ACTIVATED None Cool Heat Figure 71 shows the flash codes displayed on the Dissipation con- trol board.

  • Page 46: Economizerone (Factory Option)

    LED Indication EconomizerONE (Factory Option) NOTE: If different faulty events occur at the same time, the ECONOMIZER SETTINGS sensor/DAC LED lights up following this priority: Red  Interface Overview Yellow  Off. For example, if there is a humidity sensor error and air temperature failure at the same time, the sensor LED EconomizerONE turns red rather than yellow.
  • Page 47 Table 8 — 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 48 Table 9 — Free Cooling Functions CONTROL MODE SENSORS USED ENABLE FREE COOLING? The outside air dry bulb temperature is compared with the set temperature Control Mode 1 OA (outside air) Temperature Sensor shutoff set point. • Fixed Dry Bulb and MA (Mixed Air) Temperature Sensor If the outside air dry bulb temperature is below the temperature shutoff set point, then the outside air is used to meet all or part of the cooling demand.
  • Page 49 Table 13 — Different Fan Speeds with Different Table 10 — 1 and 2-Stage Cooling Stage I/O Logic Configured Outputs ECONOMIZER COOLING COOLING CONDITION MET STAGE 1 STAGE 2 FAN TYPE 1-SPEED COOLING 2-STAGE COOLING • Spd H (regardless of •...
  • Page 50 Table 15 — Different Damper Position Setting with Different Configured Outputs (DCV is Enabled) FAN TYPE 1-STAGE COOLING 2-STAGE COOLING • 2VENTMIN H to 2VENTMAX H (regardless of • 2VENTMIN H to 2VENTMAX H (regardless of 1-SPEED FAN cooling demand, OCC=Yes) cooling demand, OCC=Yes) 2VENTMIN L to 2VENTMAX L ...
  • Page 51 • If Exhaust Fan 2 is connected and configured, then Fault Detection and Diagnostics Exhaust Fan 2 parameter group (L, M, and H) is available, The economizer controller can detect and diagnose free cooling depending on fan configuration. faults, sensor operation faults, and damper modulating faults. It •...

  • Page 52: Wiring

    WIRING WARNING Failure to follow this caution may result in damage to equipment. Be sure to allow enough time for compressor startup and shutdown between checkout tests so that the compressors do not short-cycle.  Mounting Devices Connected to the Economizer Controller Devices like damper actuators, sensors (temperature sensor, hu- midity sensor, combination temperature and humidity sensor, CO...
  • Page 53 Table 17 — Economizer Control Wiring Settings LABEL TYPE DESCRIPTION RS485 Modbus A Line A RS485 Modbus B Line B ¬ GND_ISO Earth Ground Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor Mixed or Discharge Air Temperature Sensor Common Type II NTC 10K or 0-10 vdc Outside Air Temperature Sensor 0-10 vdc or 4-20mA...
  • Page 54 Connecting Peripheral Devices to the Economizer Controller See Fig. 79-83 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 55 • 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 56: Setup And Configuration

    SETUP AND CONFIGURATION NOTE: Parameters and display menus may display differently/dynamically if different applications are config- ured. See Tables 18-25. IMPORTANT: Before setup and configuration, it is recom- mended to obtain some location-based values, such as shutoff points, or utilize the location services in the Climatix ™...
  • Page 57 Table 18 — Status Display PARAMETER DESCRIPTION VALUE 1FREECOOL Indicates if the system can use outdoor air for free cooling. 1ECON ENAB Indicates if outdoor air is being used for the first stage of cooling. Indicates if the space is occupied. If users choose ALWAYS for 6OCC when configuring I/Os, the parameter value is YES;...
  • Page 58 Table 19 — Parameter Settings — Basic PARAMETER DESCRIPTION RANGE DEFAULT Temperature shutoff set point can be obtained automatically if a smartphone or tablet is connected to the network provided by a Wi-Fi/WLAN stick 2 TEMP OFF plugged into the Economizer Controller and the mobile application is 48...80°F;...
  • Page 59 Table 20 — 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 60 Table 21 — Parameter Settings — I/O Configurations (cont) PARAMETER DESCRIPTION VALUE DEFAULT Choose ACT FB if feedback signal is available from the connected damper ACT FB 6AUX-AI2 ACT FB actuator. Otherwise, choose NONE. NONE Choose “COOL 2” if Cooling Stage 2 is available (another compressor is COOL 2 6Y2O COOL 2...

  • Page 61: Installing Optional Hh57Lw001 Single Outside Air Enthalpy Sensor

    Table 24 — 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 62 2.75" (70 mm) 3.95" (100 mm) NOTE: Dimensions in inches (mm). Fig. 84 — HH57LW001 Dimensional, Connection and Switching Information 1.327 Max 18.0±0.25 1/4" Stud Hole 0.531±0.008 20 AWG 7/28 PVC Insulated Wire 1/8" ø Black 2-520102-2 (one black/one red) Polyolefin Heat Shrink Insulation Connectors...
  • Page 63 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. 88 — U.S. and Canada Climate Zones Table 26 —...
  • Page 64 Economizers are shipped standard with an HH79NZ039 outside Table 27 — California Title 24 Regional High Limit air dry bulb sensor (refer to Fig. 85). System default setting (high Dry Bulb Temperature Settings temp limit) is 63°F (17°C) and has a range of 48°F to 80°F (9°C to REQUIRED HIGH LIMIT 27°C).

  • Page 65: Checkout

    CHECKOUT NOTE: All settings are stored in non-volatile flash memory. Status Inspect all wiring connections at the economizer module’s termi- nals, and verify compliance with the installation wiring diagrams. Use the Status menu (refer to Table 18) to check the parameter For checkout, review the Status of each configured parameter and values for the various devices and sensors configured.

  • Page 66: Troubleshooting

    TROUBLESHOOTING For EconomizerONE troubleshooting issues, see Table 29. Table 29 — 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 67: Systemvu™ Controller (Factory Option)

    Units with two fan motors are wired to connect the motor protec- SystemVu™ Controller (Factory Option) tion relays in series. If one motor detects a problem, both motors For details on operating 50GE-*17-28 units equipped with the shut down and unit operation is disabled. factory-installed SystemVu controller option, refer to the FE/GE Series Single Package Rooftop Units with SystemVu Controller UNITS WITH ELECTROMECHANICAL CONTROLS...

  • Page 68: Units With Systemvu™ Controls

    ESP in. wg Factory Setting: Calculator 9.0 V 6000 Field Setting: 6500 Record field setting here 7000 7500 8000 Switch Range: 8500 9000 4.1 - 7.5 9500 10.0 6.9 - 8.7 10000 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential.

  • Page 69: Compressor Rotation

    ESP in. wg Calculator 1250 1348 1441 1528 1610 1688 1762 1832 1899 1963 6000 1336 1428 1515 1598 1677 1753 1824 1893 1959 2021 6500 1423 1509 1591 1670 1746 1819 1888 1955 2020 2081 7000 1510 1591 1669 1744 1817 1887...

  • Page 70: Pressure Relief Valves

    22.5 in.-lb (2.5 Nm) + 2.5 in.-lb (0.3 Nm) Fig. 92 — Pressure Relief Valve Location © 2025 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500431-01 Printed in U.S.A.

  • Page 71: Preliminary Information

    START-UP CHECKLIST 50GE-*17-28 Packaged Rooftop Units with Gas Heat and Electric Cooling (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation Instruction document.
  • Page 72 (Y/N) _______ 10. Restore set-points for thermostat and humidistat (Y/N) _______ © 2025 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500431-01 Printed in U.S.A.

This manual is also suitable for:

Weathermaster 50ge-20 seriesWeathermaster 50ge-24 seriesWeathermaster 50ge-28 series

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