Carrier WeatherMaster 50GE 07 Series Installation Instructions Manual
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Carrier WeatherMaster 50GE 07 Series Installation Instructions Manual

Carrier WeatherMaster 50GE 07 Series Installation Instructions Manual

Single package rooftop cooling only with puron advance r-454b refrigerant
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . 10
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . 10
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . 12
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 12
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 14
NON-FUSED DISCONNECT OR HACR CIRCUIT
BREAKER
• FIELD WIRING COMPLIANCE
• CONVENIENCE OUTLETS
• ALL UNITS
• HACR AMP RATING
• FACTORY-OPTION THRU-BASE CONNECTIONS
• HEAT ANTICIPATOR SETTINGS
• ELECTRIC HEATERS
• SINGLE POINT BOXES AND SUPPLEMENTARY
FUSES
• SINGLE POINT BOXES WITHOUT FUSES
• LOW-VOLTAGE CONTROL CONNECTIONS
• HUMIDI-MIZER
®
CONTROL CONNECTIONS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500420-01
Installation Instructions
Printed in U.S.A.
Form No. 50GE-7-12-01SI
Single Package Rooftop Cooling Only
with Puron Advance™ (R-454B) Refrigerant
Leak Dissipation System . . . . . . . . . . . . . . . . . . . . .31
Page
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
EconomizerONE (Factory Option) . . . . . . . . . . . . . .36
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Step 12 - Install Accessories . . . . . . . . . . . . . . . . .58
Step 13 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .58
COMPRESSOR ROTATION . . . . . . . . . . . . . . . . . . . .61
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . .61
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol
WeatherMaster
®
. When you see this symbol on the unit and in
Pg 1
8-24
®
50GE 07-12
Replaces: New

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  • Page 1: Table Of Contents

    ® WeatherMaster 50GE 07-12 Single Package Rooftop Cooling Only with Puron Advance™ (R-454B) Refrigerant Installation Instructions • TYPICAL UNIT WIRING DIAGRAMS CONTENTS Leak Dissipation System .....31 Page •...

  • Page 2: Electrical Shock Hazard

    instructions or manuals, be alert to the potential for personal injury. AVERTISSEMENT Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. Soyez prudent lors de l’entretien des bornes du compresseur. DANGER identifies the most serious hazards which will result in Les anomalies du système ou du compresseur peuvent déloger severe personal injury or death.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit Heat Type Packaging 50 = Electric Cooling/Electric Heat 0 = Standard Packaged Rooftop Electrical Options ® A = None Model Series — WeatherMaster GE = Mid Tier Puron Advance™ B = HACR Breaker C = Non-Fused Disconnect (NFDC) D = Thru-The-Base Connections (TTB)
  • Page 4 Fig. 2 — Unit Dimensional Drawing — Sizes 07, 08, 09...
  • Page 5 Fig. 2 — Unit Dimensional Drawing — Sizes 07, 08, 09 (cont)
  • Page 6 Fig. 2 — Unit Dimensional Drawing — Sizes 07, 08, 09 (cont)
  • Page 7 Fig. 3 — Unit Dimensional Drawing — Size 12...
  • Page 8 Fig. 3 — Unit Dimensional Drawing — Size 12 (cont)
  • Page 9 Fig. 3 — Unit Dimensional Drawing — Size 12 (cont)

  • Page 10: Installation

    Check and tighten the bottom condensate drain connection INSTALLATION plug Step 1 — Plan for Unit Location Rig and place unit Select a location for the unit and its support system (curb or other) Convert unit to side duct connection arrangement that provides for the minimum clearances required for safety.
  • Page 11 THIRD ANGLE DIMENSIONS ARE IN INCHES PROJECTION TOLERANCES ON: THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS PROPRIETARY TO CARRIER CORPORATION AND SHALL NOT 1 DEC 2 DEC 3 DEC BE USED OR DISCLOSED TO OTHERS, IN WHOLE OR IN PART, MATERIAL WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION.

  • Page 12: Slab Mount

    Outlet grilles must not lie directly below unit discharge. WARNING PERSONAL INJURY HAZARD Failure to follow this warning could cause personal injury. For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90 degree turn in the return ductwork between the unit and the conditioned MAXIMUM ALLOWABLE DIFFERENCE in.

  • Page 13: Convert To Horizontal And Connect Ductwork (When Required)

    Place all seal strips in place before "B" placing unit 36-54 in. Required Detail "A" on roof curb (914-1371 mm) Spreader Bars Duct End "C" Side "A" See Detail "A" NOTE(S): 1. SPREADER BARS ARE REQUIRED. Top damage will occur if spreader bars are not used. 2.

  • Page 14: Step 8 - Install Outside Air Hood

    Screws Hood Parts Plastic Tie Wrap Qty (2) Duct Covers Sheet Metal Face Up Screws for Metal Tray Qty (2) Fig. 11 — Economizer Hood Package Location Basepan Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in Economizer Hood Setup in the following section.

  • Page 15: Install External Condensate Trap And Line

    Caulk the end of the joint between the unit top panel and the The piping for the condensate drain and external trap can be com- pleted after the unit is in place. See Fig. 15 and 16. hood top. NOTE: If the alternate bottom drain is not used, check the drain Replace the filter access panel.

  • Page 16: Field Power Wiring Connection

    (copper only) per pole on terminal or fuse block on units with Units Without Single Point Box, Disconnect or HACR Option single point box. See Fig. 17 and unit label diagram for field power wiring connections. NOTE: TEST LEADS - Unit may be equipped with short leads (pigtails) on the field line connection points on contactor C or op- tional disconnect switch or HACR, see Fig.

  • Page 17: Units Without Factory-Installed

    Remove (3) hex screws on the HACR enclosure - (2) on the face of the cover and (1) on the left side cover. Remove the front cover of the HACR enclosure. Make sure the HACR circuit breaker shipped from the fac- tory is at OFF position (the white arrow pointing at OFF).

  • Page 18: Convenience Outlets

    Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause dam- age to electrical components. Such operation would invalidate any applicable Carrier warranty. Control Box Access Panel max voltage deviation from average voltage...

  • Page 19: All Units

    unit as shipped from the factory. If field-installed accessories are GFCI Receptacle Cover — While-In-Use added or changed in the field (for example, power exhaust, ERV), Not Included Weatherproof the HACR may no longer be of the proper amp rating and there- fore will need to be removed from the unit.

  • Page 20: Factory-Option Thru-Base Connections

    Units Without Thru-Base Connections on page 20 and use routing path shown in Fig. 31 to help with compliance as needed. Thermostat Install a Carrier-approved accessory 2-stage thermostat according to installation instructions included with the accessory. For com- plete economizer function and 2-stage compressor operation, se- lect a two-stage cooling thermostat.

  • Page 21: Heat Anticipator Settings

    NOTE: If thru-the-bottom connections accessory is used, refer to Not all available heater modules may be used in every unit. Use the accessory installation instructions for information on routing only those heater modules that are UL listed for use in a specific power and control wiring.

  • Page 22: Humidi-Mizer ® Control Connections

    This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination ther- mostat-humidistat control device such as Carrier’s Edge ® Humidistat Thermidistat™ device with isolated contact set for dehumidifica- tion control (see Fig.

  • Page 23: Typical Unit Wiring Diagrams

    Programmable Thermostat Unit Control Board Thermostat Connections O/W2/B S RTN Fig. 40 — Typical 50GE**07-12 Unit with Humidi-MiZer Adaptive Dehumidification System ® and Edge Pro Thermidistat Device TYPICAL UNIT WIRING DIAGRAMS See Fig. 41-47 for examples of typical unit control and power wir- ing diagrams.
  • Page 24 Fig. 41 — Typical Control Wiring Diagram, Electromechanical with POL224 — 50GE 07-09, 230/460/575-3-60 Units Shown...
  • Page 25 Fig. 42 — Typical Control Wiring Diagram, Electromechanical with POL224 — 50GE 12, 230/460/575-3-60 Units Shown...
  • Page 26 Fig. 43 — Typical Control Wiring Diagram, SystemVu™ Controller — 50GE 07-09 230/460/575-3-60 Units Shown...
  • Page 27 Fig. 44 — Typical Control Wiring Diagram, SystemVu™ Controller — 50GE 12 230/460/575-3-60 Unit Shown...
  • Page 28 Fig. 45 — Typical Power Wiring Diagram, for Electromechanical Units, 50GE 07-09, 230/460-3-60 Units Shown...
  • Page 29 Fig. 46 — Typical Power Wiring Diagram, for SystemVu Controller Units, 50GE 07-09, 230/460-3-60 Units Shown...
  • Page 30 Fig. 47 — Typical Power Wiring Diagram, for Electromechanical and SystemVu Controller Units, 50GE 12, 230/460-3-60 Unit Shown...

  • Page 31: 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 32 Detail A Detail B Detail A — Test Button Detail B — Status LED Fig. 51 — Dissipation Control Board — Shown without Dust Cover 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 33: Troubleshooting

    Table 5 details the required operational checks to ensure proper See Table 6 for details on the operating status and troubleshooting dissipation system function. of the Dissipation system for the various flash codes. Table 5 — Dissipation System Required Operational Checks NORMAL OPERATION UNIT...

  • Page 34: Humidi-Mizer ® Dehumidification System

    Dehumidification System  DEHUM/MECH COOLING (SUBCOOLING) MODE Humidi-MiZer ® (Optional) This mode increases the latent heat removal and decreases sensi- ble cooling compared to normal cooling. This occurs when there Units with the factory-installed Humidi-MiZer system option are is a cooling and dehumidification demands. capable of providing multiple modes of improved dehumidifica- tion as a variation of the normal cooling cycle.
  • Page 35 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. 54 — Subcooling Mode — Humidi-MiZer System for 50GE 07-12 Indoor Supply Valve Condenser Coil...

  • Page 36: Economizerone (Factory Option)

    the harness are made to the C (24 vac common) and R (24 vac EconomizerONE (Factory Option) power) terminals of the economizer controller. See Fig. 58. ECONOMIZER SETTINGS LED Indication Interface Overview NOTE: If different faulty events occur at the same time, then EconomizerONE sensor/DAC LED lights up following the priority below: Red ...
  • Page 37 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 38 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 setpoint. • Fixed Dry bulb and MA (Mixed Air) Temperature Sensor If the outside air dry bulb temperature is below the temperature shutoff setpoint, then the outside air is used to meet all or part of the cooling demand.
  • Page 39 Table 10 — 1 and 2-Stage Cooling Stage I/O Logic Table 13 — Different Fan Speeds with Different Configured Outputs ECONOMIZER COOLING COOLING CONDITION MET STAGE 1 STAGE 2 FAN TYPE 1-SPEED COOLING 2-STAGE COOLING • Spd H (regardless of •...
  • Page 40 Table 15 — Different Damper Position Settings with Different Configured Outputs (DCV is Enabled) FAN TYPE 1-STAGE COOLING 2-STAGE COOLING • 2VENTMIN H to 2VENTMAX H (regardless of • 2VENTMIN H to 2VENTMAX H (regardless of 1-SPEED FAN cooling demand, OCC=Yes) cooling demand, OCC=Yes) 2VENTMIN L to 2VENTMAX L ...
  • Page 41 Exhaust Fan Operation Users can enable this function only from the Climatix mobile ap- ™ plication if the related function is available in the current mobile Up to two exhaust fans can be connected to the economizer application version. controller. Fault Detection and Diagnostics •...

  • Page 42: 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, humidity sensor, combination temperature and humidity sensor, sensor), thermostats, and exhaust fans can be connected to...
  • Page 43 Table 17 — EconomizerONE Control Wiring Settings LABEL TYPE DESCRIPTION RS485 Modbus A Line A RS485 Modbus B Line B ¬ GND_ISO Earth Ground Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor Mixed or Discharge Air Temperature Sensor Common Type II NTC 10K or 0-10 vdc Outside Air Temperature Sensor 0-10 vdc or 4-20mA...
  • Page 44 Connecting Peripheral Devices to the Economizer Controller See Fig. 63-67 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 45: Pressure Sensor Connection

    • 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 46: 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 recommend- ed to obtain some location-based values, such as shutoff points, IMPORTANT: Not all operations are available on the local or utilize the location services in the Climatix ™...
  • Page 47 Table 18 — Status Display PARAMETER DESCRIPTION VALUE 1FREECOOL Indicates whether the system can use outdoor air for free cooling. 1ECON ENAB Indicates whether outdoor air is being used for the first stage of cooling. Indicates whether the space is occupied. If users choose ALWAYS for 6OCC when configuring I/Os, then the parameter value is YES;...
  • Page 48 Table 19 — Parameter Settings — Basic PARAMETER DESCRIPTION RANGE DEFAULT Temperature shutoff setpoint can be obtained automatically if a smartphone or tablet with the mobile application installed on it is connected to the 2 TEMP OFF 48...80°F; increment by 1 63°F network provided by a Wi-Fi/WLAN stick plugged into the economizer controller.
  • Page 49 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 50 Table 21 — Parameter Settings — I/O Configurations (cont) PARAMETER DESCRIPTION VALUE DEFAULT Choose “COOL 2” if Cooling Stage 2 is available (another compressor is COOL 2 6Y2O COOL 2 connected to the Economizer). Otherwise, choose “NONE”. NONE Auxiliary DO-1. Configurable as: NONE •...

  • Page 51: 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 52 2.75" (70 mm) 3.95" (100 mm) NOTE: Dimensions in inches (mm). Fig. 68 — 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 53 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. 72 — U.S. and Canada Climate Zones Table 26 —...
  • Page 54 Economizers are shipped standard with an HH79NZ039 outside Table 27 — California Title 24 Regional High Limit air dry bulb sensor (see Fig. 69). System default setting (high temp Dry Bulb Temperature Settings limit) is 63°F (17°C) and has a range of 48°F to 80°F (9°C to REQUIRED HIGH LIMIT 27°C).

  • Page 55: Checkout

    CHECKOUT Status Use the Status menu (refer to Table 18) to check the parameter Inspect all wiring connections at the economizer module’s termi- values for the various devices and sensors configured. nals, and verify compliance with the installation wiring diagrams. For checkout, review the Status of each configured parameter and NOTE: For information about menu navigation and use of the perform the Test Commands tests (refer to Table 23).

  • Page 56: 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 57: Systemvu™ Controller (Factory Option)

    Connect the flexible tube on the sampling inlet to the sam- SystemVu™ Controller (Factory Option) pling tube on the basepan. For details on operating 50GE**07-12 units equipped with the factory-installed SystemVu controller option, refer to the FE/GE Series Single Package Rooftop Units with SystemVu Controller Controls, Start-up, Operation and Troubleshooting manual.

  • Page 58: Step 11 - Adjust Factory-Installed Options

    NOTE: The Fan Speed Set Up labels are located on the High Volt- Step 11 — Adjust Factory-Installed Options age cover in the Control Box. SMOKE DETECTORS Connect a multimeter to the Vdc terminals on the UCB. Smoke detector(s) will be connected at the Unit Control Board Set the Range Switch to either A, B, or C per the Switch (UCB), at terminals marked “Smoke Shutdown.”...

  • Page 59: Units With Systemvu™ Controls

    ESP in. wg Factory Setting: Calculator 9.0 V 3000 Field Setting: 3250 Record field setting here 3500 3750 4000 Switch Range: 4250 4500 4.1 - 7.5 4750 10.0 6.9 - 8.7 5000 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential.
  • Page 60 ESP in. wg Calculator 1250 1348 1441 1528 1610 1688 1762 1832 1899 1963 3000 1336 1428 1515 1598 1677 1753 1824 1893 1959 2021 3250 1423 1509 1591 1670 1746 1819 1888 1955 2020 2081 3500 1510 1591 1669 1744 1817 1887...

  • Page 61: Compressor Rotation

    Reverse any two of the three unit power leads. COMPRESSOR ROTATION Reapply electrical power to the compressor. The suction pres- sure should drop and the discharge pressure should rise which CAUTION is normal for scroll compressors on start-up. Replace compressor if suction/discharge pressures are not EQUIPMENT DAMAGE HAZARD within specifications for the specific compressor.
  • Page 62 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500420-01 Printed in U.S.A. Form No. 50GE-7-12-01SI Pg 62 8-24 Replaces: New...

  • Page 63: Preliminary Information

    START-UP CHECKLIST 50GE-*07-12 Single Package Rooftop Electric Cooling Unit (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 64 (Y/N) _____ 10. Restore set points for thermostat and humidistat. (Y/N) _____ © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500420-01 Printed in U.S.A.

This manual is also suitable for:

Weathermaster 50ge 08 seriesWeathermaster 50ge 09 seriesWeathermaster 50ge 12 series

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