Carrier WeatherMaster 50HC04 Installation Instructions Manual
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Carrier WeatherMaster 50HC04 Installation Instructions Manual

Carrier WeatherMaster 50HC04 Installation Instructions Manual

Single package rooftop cooling only/electric heat unit with puron (r-410a) refrigerant
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . .2
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Rated Indoor Airflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Jobsite Survey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Step 1 - Plan for Unit Location. . . . . . . . . . . . . . . . . . .6
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . . .6
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . .8
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . .8
Ductwork (When Required) . . . . . . . . . . . . . . . . . . . . . . .9
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . .10
HOOD PACKAGE REMOVAL AND SETUP
(FACTORY OPTION)
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500201-01
Installation Instructions
Page
Printed in U.S.A.
Form 50HC-4-6-02SI
50HC04-06 Single Package Rooftop
Cooling Only/Electric Heat Unit
®
with Puron
(R-410A) Refrigerant
• HACR AMP RATING
• UNITS WITHOUT THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• FIELD CONTROL WIRING
®
®
Step 13 - Install Accessories . . . . . . . . . . . . . . . . . . . 47
Step 14 - Check Belt Tension . . . . . . . . . . . . . . . . . . 47
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1
Pg 1
WeatherMaster
8-18
Replaces: 50HC-4-6-01SI
®
Page

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Summary of Contents for Carrier WeatherMaster 50HC04

  • Page 1: Table Of Contents

    ® WeatherMaster 50HC04-06 Single Package Rooftop Cooling Only/Electric Heat Unit ® with Puron (R-410A) Refrigerant Installation Instructions CONTENTS Page Page • UNITS WITHOUT FACTORY-INSTALLED SAFETY CONSIDERATIONS ..... .2 NON-FUSED DISCONNECT OR HACR •...

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, Failure to follow this warning could cause personal injury, maintenance, or use can cause explosion, fire, electrical death and/or equipment damage. shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agen- Puron ®...
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 18 Example: Factory Assigned Unit Heat Type 0 = Standard 50 - Electric Heat 1 = LTL Packaged Rooftop Electrical Options ® A = None Model Series - WeatherMaster HC - High Efficiency B = HACR Breaker C = Non-Fused Disconnect D = Thru-The-Base Connections...
  • Page 4 Vertical Connections / Economizer Horizontal Connections / Economizer Fig. 2 — Unit Dimensional Drawing...
  • Page 5 Fig. 2 — Unit Dimensional Drawing (cont) 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 40 in.

  • Page 6: Installation

    Install External Condensate Trap and Line on page 11 for INSTALLATION 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 Install condensate line trap and piping. Electrical Code) ANSI/NFPA 70 for special installation Make electrical connections.
  • Page 7 Fig. 4 — Roof Curb Details...

  • Page 8: Alternate Unit Support (In Lieu Of Curb Or Slab Mount)

    UNITS WITH ACCESSORY OR OPTIONAL ELECTRIC HEATERS All installations require a minimum clearance to combusti- ble surfaces of 1 in. (25 mm) from duct for first 12 in. (305 mm) away from unit. Outlet grilles must not lie directly below unit discharge. NOTE: A 90-degree elbow must be provided in the ductwork to comply with UL (Underwriters Laboratories) code for use with electric heat.

  • Page 9: Positioning On Curb

    "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 50HC-A04 74.5 1890 36.5 33.5 50HC-A05 74.5 1890 36.5 41.5 1055...

  • Page 10: 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) BASEPAN Fig. 11 — Economizer and Two-Position Damper Hood Parts Location Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the Fig.

  • Page 11: Step 9 - Units With Hinged Panels Only

    PANEL INDOOR COIL ACCESS PANEL LEFT HOOD SCREW SIDE 19 1/16” (483mm) Fig. 15 — Compressor Door Latch Location 33 3/8” (848mm) Step 10 — Install External Condensate Trap and Line HOOD DIVIDER The unit has one -in. condensate drain connection on the Fig.

  • Page 12: Step 11 - Make Electrical Connections

    All units must have an external trap for condensate drain- leads. See Convenience Outlets on page 15 for power trans- age. Install a trap at least 4 in. (102 mm) deep and protect former connections. against freeze-up. If drain line is installed downstream from The field power wires are connected to the unit at line-side the external trap, pitch the line away from the unit at 1 in.

  • Page 13: Disconnect Or Hacr

    Units Without Single Point Box, Disconnect or HACR Option 1-ph Belt Drive IFM Direct Drive IFM Equip ELECTRIC GR Lug Equip DISCONNECT GR Lug SWITCH COPPER WIRE ONLY ALUMINUM Disconnect Disconnect WIRE Fig. 19 — Disconnect Switch and Unit 208/230-1-60 Ground Ground (GR)

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

    Fig. 21 — NFD Handle and Shaft Assembly Fig. 23 — HACR Handle and Shaft Assembly Field-Install the HACR Shaft and Handle UNITS WITHOUT FACTORY-INSTALLED NON-FUSED Remove unit front panel (see Fig. 2 on page 4). DISCONNECT OR HACR Remove (3) hex screws on the HACR enclosure — (2) When installing units, provide a disconnect switch per on the face of the cover and (1) on the left side cover.

  • Page 15: Convenience Outlets

    CONVENIENCE OUTLETS Remove the blank cover plate at the convenience outlet; discard the blank cover. Loosen the two screws at the GFCI duplex outlet, until WARNING approximately -in. (13 mm) under screw heads is Failure to follow this warning could result in personal injury exposed.

  • Page 16: Factory-Option Thru-Base Connections (Electrical Connections)

    Fig. 27 — Convenience Outlet Utilization Notice Label HACR AMP RATING The amp rating of the HACR factory-installed option is based on the size, voltage, indoor motor and other electrical options of the unit as shipped from the factory. If field-installed accessories are added or changed in the field (for example, power exhaust, ERV), the HACR may no longer be of the proper amp rating and therefore will need to be removed from the unit.

  • Page 17: Thermostat

    PremierLink™ controller (available as factory-installed op- Pass the thermostat control wires through the hole provid- tion or as field-installed accessory, for use on a Carrier Com- ed in the corner post; then feed the wires through the raceway fort Network ®...

  • Page 18: Heat Anticipator Settings

    NOTE: If thru-the-bottom connections accessory is used, refer to the accessory installation instructions for information on routing DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH power and control wiring. LOCATION HEATER COVERS RACEWAY SINGLE POINT MAIN...
  • Page 19 Single Point Boxes and Supplementary Fuses When the unit MOCP device value exceeds 60-A, unit- CONTROL mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory Single Point BUSHING Boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, SINGLE just to the left of the partition separating the indoor section...

  • Page 20: Humidi-Mizer ® Control Connections

    (contact closes on rise in space RH above control setpoint) or HR1: On Heater 1 in Position #1 a combination thermostat-humidistat control device such as HR2: On Heater 2 in Position #2 (if installed) Carrier’s Edge ® Pro Thermidistat™ with isolated contact set Fig. 36 — Accessory Electric Heater Control for dehumidification control.

  • Page 21: Control And Power Wiring Diagrams

    ® Fig. 39 — Edge Pro Thermidistat CONTROL AND POWER WIRING DIAGRAMS Connecting the Carrier Humidistat (HL38MG029) Route the humidistat 2-conductor cable (field-supplied) See Fig. 42-51. through the hole provided in the unit corner post. ® Fig. 40 — Typical Humidi-MiZer...
  • Page 22 EDGE Pro THERMIDISTAT Unit CTB THERMOSTAT O/W2/B SRTN Humidi-MiZer™ FIOP *Connection not required. ® Fig. 41 — Typical Rooftop Unit with Humidi-MiZer Adaptive Dehumidification System ® and Edge Pro Thermidistat Device...
  • Page 23 Fig. 42 — Electro-Mechanical Control Wiring Diagram...
  • Page 24 Fig. 43 — Electro-Mechanical Control Wiring Diagram with Humidi-MiZer ® System...
  • Page 25 Fig. 44 — Electro-Mechanical Control Power Wiring Diagram...
  • Page 26 Fig. 45 — ComfortLink Control Wiring Diagram (50HC 3-5 Ton Units)
  • Page 27 Fig. 46 — 50HC ComfortLink Control with Humidistat — Power Wiring Diagram, 208/230V, 460V, 575V 3 Phase...
  • Page 28 Fig. 47 — 50HC ComfortLink Control with Humidi-MiZer ® System — Power Wiring Diagram, 208/230V, 460V, 575V 3 Phase...
  • Page 29 Fig. 48 — PremierLink™ Wiring Schematic...
  • Page 30 ® Fig. 49 — PremierLink™ Wiring Schematic with Humidi-MiZer System...
  • Page 31 Fig. 50 — RTU Open System Control Wiring Diagram...
  • Page 32 ® Fig. 51 — RTU Open System Control Wiring Diagram with Humidi-MiZer System...

  • Page 33: Economi$Er ® (Factory Option)

    ECONOMI$ER (FACTORY OPTION) User Interface ® The interface provides status for normal operation, setup param- The EconoMi$er X system is an expandable economizer eters, checkout tests, and alarm and error conditions with a 2-line control system, which includes a W7220 economizer module 16 character LCD display and four button keypad.
  • Page 34 Storage Temperature Table 4 — Economizer Module - Left Hand Terminal Blocks –40 to 150°F (–40 to 65°C) LABEL TYPE DESCRIPTION Shipping Temperature Top Left Terminal Block –40 to 150°F (–40 to 65°C) 20k NTC Mixed Air Temperature Sensor (Polarity Relative Humidity and COM Insensitive Connection)
  • Page 35 S-Bus Sensor Wiring Sensor Wiring The labels on the sensors and controller are color coded When using a CO sensor the black and brown common for ease of installation. Orange labeled sensors can only be wires are internally connected and only one is connected to wired to orange terminals on the controller.
  • Page 36 Press the (Menu Up/Exit) button to exit a menu’s item and return to the list of menus. To use the keypad when work- IMPORTANT: Table 8 illustrates the complete hierar- ing with Setpoints, System and Advanced Settings, Checkout chy. Your menu parameters may be different depending tests and Alarms: on your configuration.
  • Page 37 Table 8 — Menu Structure* PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT FIRST STAGE COOLING DEMAND (Y1–IN) ECONO 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 YES = outside air being used for 1 stage cooling...
  • Page 38 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT ACT COUNT 1 to 65535 Displays number of times actuator has cycled. 1 cycles equals 180 deg. of actuator movement in any direction. ACTUATOR OK/Alarm (on Alarm Displays ERROR if voltage or torque is below actuator range.
  • Page 39 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY. UNITS DEG F or C Sets economizer controller in degrees Fahrenheit or Celsius EQUIPMENT CONV Conventional or HP...
  • Page 40 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT MAT T CAL 0.0°F ±2.5°F SUPPLY AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration temperature sensor. OAS T CAL 0.0°F ±2.5°F OUTSIDE AIR TEMPERATURE CALIBRATION...
  • Page 41 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT SHUTDOWN ACTIVE AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to AUX2 IN terminal. DMP CAL RUNNING DAMPER CALIBRATION ROUTINE RUNNING If DCV Auto enable has been programmed, when the W7220 is complet- ing a calibration on the dampers, this alarm will display.
  • Page 42 Table 9 — Damper Minimum Position Settings and Readings on Checkout Menu DEMAND CONTROLLED VENTILATION SETPOINTS FAN SPEED CHECKOUT SENSOR) MIN POS VMAX–HS MIN POS H VMAX–HS MIN POS L VMAX–LS VENT MIN VMAX–HS VENT MAX VMAX–HS VENT MIN H VMAX–HS VENT MAX H VMAX–LS...
  • Page 43 Table 12 — Enthalpy Operation No DCV (CO Sensor) — 1 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE HIGH 0v/Off 0v/Off MIN POS Closed NONE HIGH 24v/On 0v/Off MIN POS Closed HIGH 24v/On...
  • Page 44 ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 57 — Single Enthalpy Curve Boundaries Checkout NOTE: For information about menu navigation and use of the keypad see Interface Overview on page 35. Inspect all wiring connections at the economizer module’s terminals, and verify compliance with the installation wiring To perform a Checkout test: diagrams.

  • Page 45: Smoke Detectors

    NOTE: If the alarm still exists after clearing it, it is redisplayed Connect the flexible tube on the sampling inlet to the within 5 seconds. sampling tube on the basepan. SMOKE DETECTORS RETURN AIR Smoke detectors are available as factory-installed options SMOKE DETECTOR (AS SHIPPED) on 50HC models.

  • Page 46: Comfortlink Control (Factory Option)

    Additional Application Data CONTROLLER OPTIONS Refer to the application data document “Factory Installed Low Ambient Smoke Detectors for Small and Medium Rooftop Units 2 to If the unit comes with Electro-Mechanical (EM) control, 25 Tons” for discussions on additional control features of then no adjustment is necessary.

  • Page 47: Step 13 - Install Accessories

    BELT TENSION METHOD — Requires belt tension gauge Step 13 — Install Accessories that measures tension in belt in units of lbs force. Available accessories include: • Curb • Thru-base connection kit (must be installed before unit is set on curb) •...
  • Page 50 © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500201-01 Printed in U.S.A. Form 50HC-4-6-02SI Pg 50 8-18 Replaces: 50HC-4-6-01SI...

  • Page 51: Start-Up Checklist

    START-UP CHECKLIST FOR 50HC04-06 SINGLE PACKAGE ROOFTOP COOLING ONLY/ELECTRIC HEAT 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 preced- ing sections of this Installation Instruction document.
  • Page 52 9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____ 10. Restore set-points for thermostat and humidistat (Y/N) _____ © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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