Carrier WeatherMaker 50FCQ 04 Series Installation Instructions Manual
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Carrier WeatherMaker 50FCQ 04 Series Installation Instructions Manual

Carrier WeatherMaker 50FCQ 04 Series 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. 04-53500246-01
Installation Instructions
Printed in U.S.A.
Form 50FCQ-4-7-01SI
Single Package Rooftop Heat Pump
with Puron
®
EconoMi$er® X (Factory Option) . . . . . . . . . . . . . . .31
• INPUTS
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
• SMOKE DETECTORS
Step 13 - Install Accessories . . . . . . . . . . . . . . . . .45
Step 14 - Fan Speed Set Up . . . . . . . . . . . . . . . . . .46
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .49
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
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult local
building codes and appropriate national electrical codes (in USA,
ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA
C22.1) for special requirements.
It is important to recognize safety information. This is the safety-
alert symbol
. When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Pg 1
WeatherMaker
50FCQ*04-07
(R-410A) Refrigerant
adjustment,
alteration,
4-2020
Replaces: New
®
service,

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Summary of Contents for Carrier WeatherMaker 50FCQ 04 Series

  • Page 1: Table Of Contents

    WeatherMaker ® 50FCQ*04-07 Single Package Rooftop Heat Pump with Puron (R-410A) Refrigerant ® Installation Instructions EconoMi$er® X (Factory Option) ....31 CONTENTS • SYSTEM COMPONENTS SAFETY CONSIDERATIONS ....1 •...

  • Page 2: Model Number Nomenclature And Dimensions

    Understand the signal words DANGER, WARNING, CAUTION, MODEL NUMBER NOMENCLATURE AND and NOTE. These words are used with the safety-alert symbol. DIMENSIONS DANGER identifies the most serious hazards which will result in See Fig. 1 for 50FCQ model number nomenclature. See Fig. 2 (on severe personal injury or death.
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Unit/Series/Model Packaging & Seismic Compliance 50FCQ – Packaged Rooftop Heat Pump 0 = Standard 1 = LTL Refrig. Systems Options A = Standard One Stage Cooling Models (sizes 04, 05, 06) Electrical Options M = Single Circuit, Two Stage Cooling (size 07 only) A = None...
  • Page 4 Fig. 2 — 50FCQ 04-07 Unit Dimensional Drawing...
  • Page 5 Fig. 2 — 50FCQ 04-07 Unit Dimensional Drawing (cont)
  • Page 6 Fig. 2 — 50FCQ 04-07 Unit Dimensional Drawing (cont)

  • Page 7: Installation

    Prepare bottom condensate drain connection to suit planned INSTALLATION condensate line routing (refer to Step 10 for details) Jobsite Survey Rig and place unit Complete the following checks before installation. Install outdoor air hood Consult local building codes and the NEC (National Electri- Install condensate line trap and piping Code) ANSI/NFPA 70 special...
  • 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" 36"- 54" DETAIL "A" 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 50FCQ*04 74.5 1890 36.0 33.5 50FCQ*05 74.5 1890 36.0 33.5 50FCQ*06...

  • 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 be HOOD PACKAGE REMOVAL AND SETUP FACTORY 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 socket drive hood top. extension) and install it in the side drain connection. Replace the filter access panel.

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

    Field power wires are connected to the unit at line-side pressure Field-Install the NFD Shaft and Handle lugs on compressor contactor C and indoor fan contactor IFC (see Remove the control box access panel. The NFD enclosure is wiring diagram label for control box component arrangement) or located below the control box (see Fig.

  • Page 14: Units Without Factory-Installed Non-Fused Disconnect

    UNITS WITHOUT FACTORY-INSTALLED NON-FUSED DISCONNECT CONVENIENCE OUTLET GFCI When installing units, provide a disconnect switch per NEC PWD-CO FUSE (National Electrical Code) of adequate size. Disconnect sizing SWITCH data is provided on the unit informative plate. Locate on unit cabi- net or within sight of the unit per national or local codes.

  • Page 15: Factory Option Thru-Base Connections

    non-fused disconnect or HACR breaker switch; this will provide service power to the unit when the unit disconnect switch or HACR switch is open. Other connection methods will result in the convenience outlet circuit being de-energized when the unit dis- connect or HACR switch is open.

  • Page 16: Field Control Wiring

    This device can be a thermostat (field-supplied) or a SystemVu™ Remove connector plate assembly from the “L” bracket and controller (available as factory-installed option for use on a Carrier discard the “L” bracket, but retain the washer head screws Comfort Network or as a stand alone control) or the RTU Open ®...

  • Page 17: Unit Without Thru-Base Connection Kit

    If the thermostat contains a logic circuit requiring 24-v power, use UNIT WITHOUT THRU-BASE CONNECTION KIT a thermostat cable or equivalent single leads of different colors Pass the thermostat control wires through the hole provided in the with minimum of seven leads. If the thermostat does not require a corner post;...

  • Page 18: Commercial Defrost Control

    COMMERCIAL DEFROST CONTROL On 50FCQ units equipped with electro-mechanical controls or the optional factory-installed RTU Open controller the Defrost Con- trol Board (DFB) coordinates thermostat demands for supply fan control, 1 or 2 stage cooling, 2 stage heating, emergency heating and defrost control with unit operating sequences.
  • Page 19 Table 3 — 50FCQ 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 20: 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 21: 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 38-46 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 22 Fig. 38 — Typical Control Wiring Diagram, Electro-Mechanical with W7212 (50FCQ 04-06 208-230/3/60 Unit Shown)
  • Page 23 Fig. 39 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 (50FCQ 07 208-230/3/60 Unit Shown)
  • Page 24 Fig. 40 — Typical Control Wiring Diagram, with SystemVu Controller (50FCQ 04-06 208-230, 460, 575/3/60 Unit Shown)
  • Page 25 Fig. 41 — Typical Control Wiring Diagram, with RTU Open Controller (50FCQ 04-06 208-230, 460, 575/3/60 Unit Shown)
  • Page 26 Fig. 42 — Typical 50FCQ 04-06 Power Wiring Diagram, 208-230V/1/60 Unit Shown...
  • Page 27 Fig. 43 — Typical 50FCQ 04-07 Power Wiring Diagram, 208-230V/3/60 Unit Shown...
  • Page 28 Fig. 44 — Typical 50FCQ 04-07 Power Wiring Diagram, 460-575V/3/60 Unit Shown...
  • Page 29 Fig. 45 — Typical 50FCQ 04-07 Power Wiring Diagram, 208-230V/3/60 Unit with SystemVu Controller Shown...
  • Page 30 Fig. 46 — Typical 50FCQ 04-07 Power Wiring Diagram, 460-575V/3/60 Unit with SystemVu Controller Shown...

  • Page 31: 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 control system, which includes a W7220 economizer module (controller) • Transformer — 100 va maximum system input with an LCD and keypad (see Fig.

  • Page 32: Economizer Module Wiring Details

    Relative Humidity Table 6 — Economizer Module 5% to 95% RH non-condensing (Right Hand Terminal Blocks) ECONOMIZER MODULE WIRING DETAILS LABEL TYPE DESCRIPTION Use Fig. 48 and Tables 5 and 6 to locate the wiring terminals for Top Right Terminal Blocks the Economizer module.

  • Page 33: Interface Overview

    To use the keypad when working with menus: Table 7 — HH57AC081 Sensor Wiring Terminations • Press the ▲ (Up arrow) button to move to the previous menu. TERMINAL TYPE DESCRIPTION • Press the ▼ (Down arrow) button to move to the next NUMBER LABEL menu.

  • Page 34: Setup And Configuration

    the cooling coil. This unit application has the control sensor locat- ed after the cooling coil, in the fan section, where it is designated as (Cooling) Supply Air Temperature or SAT sensor. SETUP AND CONFIGURATION Before being placed into service, the W7220 Economizer module must be set up and configured for the installed system.
  • Page 35 Table 9 — W7220 Menu Structure* PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † FIRST STAGE COOLING DEMAND (Y1–IN) ECON AVAIL YES/NO YES = economizing available; the system can use outside air for free cooling when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO...
  • Page 36 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † EXHAUST STAGE 2 RELAY OUTPUT Output of AUX1 O terminal Displays ON when damper position reaches programmed EXH2 OUT ON/OFF percentage set point.
  • Page 37 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † EXHAUST FAN STAGE 1 SETPOINT Set point for OA damper position when exhaust fan 1 is powered 0 to 100%; by the economizer.
  • Page 38 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † NONE Used for alarm for when the DA air temperature is too high. Sets 70°F to 180°F DA HI ALM 80°F (27°C) upper range of alarm;...
  • Page 39 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † Check if outdoor temperature is below the LOW Temp Lockout on set point menu. Check if Mixed air temperature on STATUS FREEZE ALARM menu is below the Lo Set point on Advanced menu.
  • Page 40 Table 11 — Dry Bulb Operation without 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 (DCV) ECONOMIZE High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed High...
  • Page 41 Table 14 — Enthalpy Operation with 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 (DCV) ECONOMIZE VENTMIN to High 0-v/Off 0-v/Off Closed VENTMAX VENTMIN L to High 24-v/On 0-v/Off...
  • Page 42 Table 17 — Enthalpy Operation without DCV (CO Sensor) — 2 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE 0v/Off 0v/Off MIN POS Closed 24v/On 0v/Off MIN POS Closed HIGH 24v/On 24v/On MIN POS...

  • Page 43: Enthalpy Settings

    Table 19 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY CURVE BULB (F) DEWPOINT (F) (btu/lb/da) TEMP. (F) TEMP. (F) (%RH) (%RH) 28.0 36.8 66.3 80.1 26.0 39.6 63.3 80.0 24.0...

  • Page 44: Troubleshooting

    board may be necessary to complete the unit and smoke detector configuration to meet project requirements. CAUTION Units equipped with factory-optional Return Air smoke detectors require a relocation of the sensor module at unit installation. See EQUIPMENT DAMAGE HAZARD Fig. 53 for the as-shipped location. Failure to follow this caution may result in equipment damage.

  • Page 45: Step 13 - Install Accessories

    • Differential dry-bulb sensor (EconoMi$er IV) Step 13 — Install Accessories • Outdoor enthalpy sensor Available accessories include: • Differential enthalpy sensor • Roof curb • Electric heaters • Thru-base connection kit (must be installed before unit is set on curb) •...

  • Page 46: Step 14 - Fan Speed Set Up

    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). See Fig. 56 for location. Check the job specifications for the CFM (cubic feet per minute) and ESP (external static pressure) required.

  • Page 47: 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 48: 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 49: Pre-Start And Start-Up

    Filter LPS/LOC Drier Cooling Liquid Line DFT 1 Acutrol Acutrol Indoor Coil Outdoor Coil Strainer Accurater Heating Mode Liquid Line Fig. 59 — 50FCQ 04-06 Piping Schematic — One-Stage Cooling Filter LPS/LOC Drier Cooling Liquid Line DFT 1 Acutrol Indoor Coil Outdoor Coil Strainer Accurater...
  • Page 50 © 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. 04-53500246-01 Printed in U.S.A. Form 50FCQ-4-7-01SI Pg 50 4-2020 Replaces: New...

  • Page 51: Start-Up Checklist

    START-UP CHECKLIST 50FCQ04-07 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 preceding sections of this Installation Instruction document.
  • Page 52 © 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. 04-53500246-01 Printed in U.S.A. Form 50FCQ-4-7-01SI Pg CL-2 4-2020 Replaces: New...

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