Carrier WeatherMaker 50GCQM04-06 Installation Instructions Manual
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Carrier WeatherMaker 50GCQM04-06 Installation Instructions Manual

Carrier WeatherMaker 50GCQM04-06 Installation Instructions Manual

Single package rooftop heat pump with puron (r-410a) refrigerant
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . 7
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . 7
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . 9
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . 9
Ductwork (when required) . . . . . . . . . . . . . . . . . . 10
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 11
OPTION)
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500247-01
Installation Instructions
Printed in U.S.A.
Form 50GCQ-4-6-01SI
Single Package Rooftop Heat Pump
with Puron
• SINGLE POINT BOXES AND SUPPLEMENTARY
FUSES
EconoMi$er X (Factory Option) . . . . . . . . . . . . . . . .30
• INPUTS
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Step 13 - Install Accessories . . . . . . . . . . . . . . . . .42
Step 14 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .43
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .46
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Improper
installation,
maintenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloths for brazing operations and have a fire
Pg 1
WeatherMaker
50GCQM04-06
®
(R-410A) Refrigerant
adjustment,
alteration,
4-2020
Replaces: New
®
service,

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Summary of Contents for Carrier WeatherMaker 50GCQM04-06

  • Page 1: Table Of Contents

    WeatherMaker ® 50GCQM04-06 Single Package Rooftop Heat Pump with Puron ® (R-410A) Refrigerant Installation Instructions • SINGLE POINT BOXES AND SUPPLEMENTARY CONTENTS FUSES SAFETY CONSIDERATIONS ....1 •...

  • Page 2: Model Number Nomenclature And Dimensions

    extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local WARNING building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA PERSONAL INJURY AND ENVIRONMENTAL C22.1) for special requirements.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit/Series/Model Packaging & Seismic Compliance 50GCQ – Packaged Rooftop Heat Pump 0 = Standard 1 = LTL Refrig. Systems Options M = Two Stage Cooling Electrical Options A = None C = Non-Fused Disconnect (NFD) Cooling Tons D = Thru-The-Base Connections (TTB)
  • Page 4 Fig. 2 — 50GCQ 04-06 Unit Dimensional Drawing...
  • Page 5 Fig. 2 — 50GCQ 04-06 Unit Dimensional Drawing (cont)
  • Page 6 Fig. 2 — 50GCQ 04-06 Unit Dimensional Drawing (cont)

  • Page 7: Installation

    Install condensate line trap and piping INSTALLATION Make electrical connections Jobsite Survey Install other accessories Complete the following checks before installation. Consult local building codes and the NEC (National Electri- PAD-MOUNTED INSTALLATION Code) ANSI/NFPA 70 special installation Prepare pad and unit supports requirements.
  • Page 8 ROOF CURB NOTES: POWER WIRING CONTROL WIRING ACCESSORY CONVENIENCE CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING ACCESSORY # 1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED. FITTING FITTING OUTLET WIRING CONNECTOR 2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY. 14"...

  • Page 9: Slab Mount (Horizontal Units Only)

    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 space.

  • Page 10: Step 7 - Convert To Horizontal And Connect

    "B" DETAIL "A" 36"- 54" PLACE ALL SEAL STRIP IN PLACE REQUIRED (914-1371) BEFORE PLACING UNIT ON ROOF CURB. SPREADER BARS DUCT END "C" "A" SEE DETAIL "A" DIMENSIONS MAX WEIGHT UNIT 50GCQ-04 74.5 1890 36.0 33.5 50GCQ-05 74.5 1890 35.4 41.5 1055...

  • Page 11: Step 8 - Install Outside Air Hood

    ECONOMIZER AND TWO-POSITION HOOD Step 8 — Install Outside Air Hood NOTE: If the power exhaust accessory is to be installed on the ECONOMIZER HOOD AND TWO-POSITION DAMPER unit, the hood shipped with the unit will not be used and must HOOD PACKAGE REMOVAL AND SETUP FACTORY be discarded.

  • Page 12: Step 9 - Units With Hinged Panels Only

    Caulk the ends of the joint between the unit top panel and the To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a -in. square sock- hood top. et drive extension) and install it in the side drain connection. Replace the filter access panel.

  • Page 13: Units With Factory-Installed Non-Fused

    (see wiring diagram label for control box component arrange- ment) or at factory-installed option non-fused disconnect switch or Units Without Single Point Box, Disconnect or HACR Option HACR. Maximum wire size is #2ga AWG (copper only) per pole Equip on contactors, #2ga AWG (copper only) per pole on optional dis- GR Lug connect or HACR, and 4/0 AWG (copper only, see Fig.

  • Page 14: All Units

    Measure from the tip of the shaft to the top surface of the Turn the handle to the OFF position with red arrow pointing black pointer; the measurement should be 3.75 to 3.88 in. (95 at OFF. to 99 mm). Install the handle on to the painted cover horizontally with the Tighten the locking screw to secure the shaft to the NFD.

  • Page 15: Convenience Outlets

    single point box. See Fig. 18 and unit label diagram for field power wiring connections. Provide a ground fault and short circuit over-current protection device (fuse or breaker) per NEC Article 440 (or local codes). Refer to unit informative data plate for MOCP (Maximum Over-Current Protection) device size.

  • Page 16: Hacr Amp Rating

    Mount the weatherproof cover to the backing plate as shown in Fig. 26. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching. GFCI RECEPTACLE COVER - WHILE-IN-USE NOT INCLUDED WEATHERPROOF...

  • Page 17: Units Without Thru-Base Connections

    This device can be a thermostat (field-supplied) or a SystemVu™ discard the “L” bracket, but retain the washer head screws controller (available as factory-installed option for use on a Carrier and the gasket (located between the “L” bracket and the con-...

  • Page 18: Heat Anticipator Settings

    Locate the thermostat accessory on a solid wall in the condi- For wire runs up to 50 ft (15 m), use no. 18 AWG (American Wire tioned space to sense average temperature in accordance with Gage) insulated wire [35°C (95°F) minimum]. For 50 to 75 ft (15 the thermostat installation instructions.

  • Page 19: Commercial Defrost Control

    COMMERCIAL DEFROST CONTROL On 50GCQ units equipped with electro-mechanical controls or the optional factory-installed RTU Open controller the Defrost Control Board (DFB) coordinates thermostat demands for sup- ply fan control, 1 or 2 stage cooling, 2 stage heating, emergen- cy heating and defrost control with unit operating sequences. The DFB also provides an indoor fan off delay feature (user se- lectable).
  • Page 20 Table 3 — 50GCQ Defrost Board I/O and Jumper Configurations POINT NAME TYPE OF I/O CONNECTION PIN NUMBER UNIT CONNECTION NOTE INPUTS G Fan DI, 24 vac P2-3 CTB-G Y1 Cool 1 DI, 24 vac P2-5 CTB-Y1 Y2 Cool 2 DI, 24 vac P2-4 CTB-Y2...

  • Page 21: Electric Heaters

    Shorting the jumpers for a period of 5 to 20 seconds bypasses the remaining continuous run period and places the unit in a Forced Defrost mode. If the controlling DFT is closed when this mode is initiated, the unit will complete a normal defrost period that will terminate when the controlling DFT opens or the 10 minute de- frost cycle limit is reached.

  • Page 22: Low-Voltage Control Connections

    LOW-VOLTAGE CONTROL CONNECTIONS CONTROL AND POWER WIRING DIAGRAMS Pull the low-voltage control leads from the heater module — VIO Figures 41-47 are typical control and power wiring diagrams. and BRN (two of each if a two-circuit heater module is installed; identify for circuit #1) —...
  • Page 23 Fig. 41 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 (50GCQ 04-06 208-230/3/60 Unit Shown)
  • Page 24 Fig. 42 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 (50GCQ 04-06 460, 575/3/60 Unit Shown)
  • Page 25 Fig. 43 — Typical Control Wiring Diagram, with SystemVu™ Controller (50GCQ 04-06 208-230, 460, 575/3/60 Unit Shown)
  • Page 26 Fig. 44 — Typical Control Wiring Diagram, with RTU Open Controller (50GCQ 04-06 208-230/3/60 Unit Shown)
  • Page 27 Fig. 45 — Typical 50GCQ 04-06 Power Wiring Diagram, 208-230/3/60 Unit Shown...
  • Page 28 Fig. 46 — Typical 50GCQ 04-06 Power Wiring Diagram, 460, 575/3/60 Unit Shown...
  • Page 29 Fig. 47 — Typical 50GCQ 04-06 Power Wiring Diagram, 208-230V Unit with SystemVu™ Controller Shown...

  • Page 30: Economi$Er X (Factory Option)

    Electrical EconoMi$er X (Factory Option) • Rated Voltage — 20 to 30 Vac RMS, 50/60 Hz The EconoMi$er X system is an expandable economizer con- ® trol system, which includes a W7220 economizer module (con- • Transformer — 100 va maximum system input troller) with an LCD and keypad (see Fig.

  • Page 31: Economizer Module Wiring Details

    Relative Humidity Table 6 — Economizer Module - Right Hand Terminal Blocks 5% to 95% RH non-condensing LABEL TYPE DESCRIPTION ECONOMIZER MODULE WIRING DETAILS Top Right Terminal Blocks Use Fig. 49 and Tables 5 and 6 to locate the wiring terminals AUX2 I 24 vac IN The first terminal is not used.

  • Page 32: Co2 Sensor Wiring

    • Press the ▼ (Down arrow) button to move to the next Table 7 — HH57AC081 Sensor Wiring Terminations menu. TERMINAL TYPE DESCRIPTION • Press the (Enter) button to display the first item in the NUMBER LABEL currently displayed menu. S-BUS •...

  • Page 33: Setup And Configuration

    IMPORTANT: Table 9 illustrates the complete hierarchy. Your menu parameters may be different depending on your configuration. For example if you do not have a DCV (CO ) sensor, then none of the DCV parameters appear and only MIN POS will display.
  • Page 34 Table 9 — W7220 Menu Structure* PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † ECONO AVAIL YES/NO FIRST STAGE COOLING DEMAND (Y1–IN) YES = economizing available; the system can use outside air for free cooling when required ECONOMIZING YES/NO FIRST STAGE COOLING RELAY OUTPUT...
  • Page 35 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † MECH COOL ON 0, 1, or 2 Displays stage of mechanical cooling that is active. HEAT STAGES ON Displays the stage of heat pump heating that is active. STATUS FAN SPEED LOW or HIGH...
  • Page 36 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † ERV OAT SP †† 32°F 0 to 50°F ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR increment by 1 TEMPERATURE SETPOINT Only displayed when AUX1 O = ERV EXH1 SET 0 to 100% Exhaust fan set point for single speed units.
  • Page 37 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † STG3 DLY 2.0h 0 min, 5 min, COOLING STAGE 3 DELAY 15 min, then Delay after stage 2 cool has been active. Turns on second stage of 15 min intervals.
  • Page 38 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † DA SYLK T ERR DISCHARGE AIR S-BUS SENSOR ERROR Discharge air sensor has failed or become disconnected - check wiring then replace sensor if the alarm continues. OA SENS T ERR OUTSIDE AIR TEMPERATURE SENSOR ERROR Outdoor air temperature sensor has failed or become disconnected -...
  • Page 39 Enthalpy Settings point are all below the selected boundary, the economizer sets the economizing mode to YES, economizing is available. When the OA temperature, enthalpy and dew point are below the respective setpoints, the Outdoor Air can be used for econ- When all of the OA conditions are above the selected bound- omizing.
  • Page 40 Standard or Single Speed Fan Operation The W (heating mode) is not controlled by the W7220 but it re- quires the status to know where to position the OA damper for FAN TYPE = 1SPEED is not used on 50GCQ units. minimum position for the fan speed.

  • Page 41: Checkout

    2SP H/C and 3 Speed Fan Operation FAN TYPE = 2SP H/C and FAN TYPE = 3SPEED are not CAUTION used on 50GCQ units. Failure to follow this caution may result in damage to CHECKOUT equipment. Be sure to allow enough time for compressor startup and shutdown between checkout tests so that you do Inspect all wiring connections at the economizer module’s ter- not short-cycle the compressors.

  • Page 42: Completing Return Air Smoke Sensor Installation

    Units equipped with factory-optional Return Air smoke detec- Step 12 — Adjust Factory-Installed Options tors require a relocation of the sensor module at unit SMOKE DETECTORS installation. See Fig. 54 for the as-shipped location. Smoke detector(s) will be connected at the Unit Control Board (UCB), at terminals marked “Smoke Shutdown.”...

  • Page 43: Step 14 - Fan Speed Set Up

    Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper Fig. 56 — EconoMi$er ® IV Wiring Step 14 — Fan Speed Set Up UNITS WITH ELECTRO-MECHANICAL CONTROLS The Fan Speed set up controls are located on the lower section of the Unit Control Board (UCB).

  • Page 44: Units With Systemvu™ Controls

    ESP in. wg Factory Setting: Calculator 7.8 V 1500 Field Setting: 1625 Record field setting here 1750 1875 2000 Switch Range: 2125 10.0 2250 4.1 - 7.5 2375 6.9 - 8.7 2500 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range 1 Stage E Heat designed for maximum field adjustment potential.

  • Page 45: Typical Unit Piping

    ESP in. wg Calculator 1301 1477 1639 1788 1925 2054 2174 2289 1500 1381 1544 1699 1843 1976 2101 2220 2332 1625 1463 1615 1763 1902 2031 2152 2268 2378 1750 1548 1688 1828 1962 2087 2206 2318 1875 2025 2146 2262 2372...

  • Page 46: Pre-Start And Start-Up

    Check Valve C Open ners (www.hvacpartners.com). Check Valve D Closed © 2020 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500247-01 Printed in U.S.A. Form 50GCQ-4-6-01SI...

  • Page 47: Preliminary Information

    START-UP CHECKLIST 50GCQ 04-06 Single Package Rooftop Heat Pump Units (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 preced- ing sections of this Installation Instruction document.
  • Page 48 © 2020 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500247-01 Printed in U.S.A. Form 50GCQ-4-6-01SI Pg CL-2 4-2020 Replaces: New...

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