Carrier RHV181 Installation Instructions Manual
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Carrier RHV181 Installation Instructions Manual

Carrier RHV181 Installation Instructions Manual

Single package rooftop heat pump with r-410a refrigerant and x-vane fan technology
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 14
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 1 - Plan for Unit Location . . . . . . . . . . . 14
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . 14
Step 4 - Provide Unit Support . . . . . . . . . . . . 14
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . 18
Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
CONFIGURATION)
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Typical Unit Wiring Diagrams . . . . . . . . . . . . . 29
RHV181-300
Single Package Rooftop Heat Pump
with R-410A Refrigerant
and X-Vane Fan Technology
Installation Instructions
Page
RHV-181-300-01SI
2
• 2SP H/C (2 SPEED HEAT/COOL) SPEED FAN
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . 47
EconoMi$er X Occupancy Switch . . . . . . . . . . 48
Step 12 - Install Accessories . . . . . . . . . . . . 48
Step 13 - Fan Speed Set Up . . . . . . . . . . . . . 48
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . 50
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . 52
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 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
. When you see this symbol on the
unit and 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.
2-23

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  • Page 1: Table Of Contents

    RHV181-300 Single Package Rooftop Heat Pump with R-410A Refrigerant and X-Vane Fan Technology Installation Instructions CONTENTS • INPUTS • OUTPUTS Page • ENVIRONMENTAL SAFETY CONSIDERATIONS ....1 •...

  • Page 2: Electrical Shock Hazard

    Table 1 — Rated Indoor Airflow (CFM) injury, death and/or equipment damage. R-410A refrigerant systems operate at higher pressures MODEL NUMBER FULL LOAD AIRFLOW (CFM) than standard R-22 systems. Do not use R-22 service RHV181 6300 equipment or components on R-410A refrigerant equipment. RHV240 8000...

  • Page 3: Model Series

    IV and others (except for Factory-Installed EconoMiZer X) B = Economizer controls for Factory-Installed EconoMiZer X Economizer Control Combinations of factory-installed options are available, contact your representive for details. Fig. 1 — RHV181-300 Model Number Nomenclature RHV-181-300-01SI Specifications subject to change without notice.
  • Page 4 Fig. 2 — RHV181 Vertical Airflow...
  • Page 5 Fig. 3 — RHV181 Horizontal Airflow...
  • Page 6 181 SIZE 181 SIZE 181 SIZE Fig. 4 — RHV181 Back View and Condensate Drain Location...
  • Page 7 RHV181 Fig. 5 — RHV181 Corner Weights and Clearances...
  • Page 8 Fig. 6 — RHV181 Bottom View...
  • Page 9 240 SIZE 300 SIZE 240, 300 SIZE Fig. 7 — RHV240-300 Vertical Airflow...
  • Page 10 240 SIZE 300 SIZE 240, 300 SIZE Fig. 8 — RHV240-300 Horizontal Airflow...
  • Page 11 240 SIZE 300 SIZE 240, 300 SIZE 240, 300 SIZE 300 SIZE 240, 300 SIZE 300 SIZE Fig. 9 — RHV240-300 Back View and Condensate Drain Location...
  • Page 12 240 SIZE 300 SIZE Fig. 10 — RHV240-300 Corner Weights and Clearances...
  • Page 13 Fig. 11 — RHV240-300 Bottom View...

  • Page 14: Installation

    INSTALLATION 7. Install smoke detector tube 8. Install condensate line trap and piping Jobsite Survey 9. Make electrical connections 10. Install other accessories Complete the following checks before installation. 1. Consult local building codes and the NEC (National PAD-MOUNTED INSTALLATION Electrical Code) ANSI/NFPA 70 for special installa- 1.

  • Page 15: Slab Mount (Horizontal Units Only)

    If electric and control wiring is to be routed through the SLAB MOUNT (HORIZONTAL UNITS ONLY) basepan, remove knockouts in basepan located in control Provide a level concrete slab that extends a minimum of box area of access panel, see Fig. 13. See Fig. 2, 3, 7 and 6 in.
  • Page 16 Fig. 14 — Roof Curb Details — Size 181 Units RHV-181-300-01SI Specifications subject to change without notice.
  • Page 17 Fig. 15 — Roof Curb Details — Size 240 and 300 Units RHV-181-300-01SI Specifications subject to change without notice.

  • Page 18: Step 5 - Field Fabricate Ductwork

    Place All Seal Strip Detail A 36"-54" In Place Before Placing (914-1371) Unit on Roof Curb. "B" See Detail A Duct End "C" "A" DIMENSIONS MAX WEIGHT UNIT RHV181 2748 1246 127.8 3245 72.0 1830 52.5 1335 RHV240 3331 1511 141.5 3595 75.5...

  • Page 19: Positioning On Curb

    POSITIONING ON CURB filters and tracks) are shipped in a carton that is secured to the rear of the blower assembly. Access the carton lo- Position unit on roof curb so that the following clearances cation through rear panel (see Fig. 19). are maintained: 1/4 in.

  • Page 20: Step 9 - Assemble Barometric Hood

    11. Secure top diverters (Item #7) to hood top (Item #3). 12. Install outdoor air screens by sliding them into each of the four spaces created by the hood, filter support and central retainers. To do so, first insert the air screens into pocket created at the end of hood (Item #3), then fully put the air screen into place, and then slide them back into pocket created in the filter...

  • Page 21: Barometric Hood

    however the duct can be no taller than the top of the relief opening in the bottom panel, or airflow into the outside air hood will be restricted. See Fig. 28. Unit Outside Air Hood 18 3/8" Fig. 25 — Barometric Hood Box Parts Location 16"...

  • Page 22: Step 10 - Install External Condensate Trap

    Minimum Pitch 1 in. (25 mm) Per 15" Base Rail 10 ft. (3m) of Line 40 1/2" 3 in. (76 mm) Open Vent See Note To Roof Drain Roof Right Curb Drain Plug 19 1/2" Hood Side Hood NOTE: Trap should be deep enough to offset maximum unit static difference.

  • Page 23: Fire Hazard

    Fig. 35). Note that the tape covering the hole for the shaft in the corner post must be removed prior to handle and shaft installation. Load Side Line Side Detail A Detail A Control Box Fig. 33 — Location of TB1 Field power wires are connected to the unit at line-side pressure lugs on the terminal block (see wiring diagram la- bel for control box component arrangement) or at factory-...

  • Page 24: All Units

    ALL UNITS This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. All field wiring must comply with NEC and all local code requirements. IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

  • Page 25: Factory-Option Thru-Base Connections

    Loosen the two screws at the GFCI duplex outlet, until approximately 1/2 in. (13 mm) under screw heads are ex- posed. Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket;...

  • Page 26: Field Control Wiring

    Units Without Thru-Base Connections instructions for additional features which might require addi- tional conductors in the cable. 1. Install liquid tight conduit between disconnect and For wire runs up to 50 ft (15 m), use no. 18 AWG (American control box. Wire Gauge) insulated wire (35°C minimum).

  • Page 27: Commercial Defrost Control

    COMMERCIAL DEFROST CONTROL The DFB is located on the right side wall of the control box of the RHV unit (see Fig. 44). All connections are factory- On RHV units equipped with electro-mechanical controls made through harnesses to the UCB (unit control board) to the Defrost Control Board (DFB) coordinates thermostat the ECM (direct-drive motor), reversing valve solenoids and demands for supply fan control, 2 stage cooling, 2 stage...
  • Page 28 Defrost The defrost control mode is a time/temperature sequence. There are two time components: The continuous run period and the test/defrost cycle period. The temperature compo- nent is provided by Defrost Thermostat 1 and 2 (DFT1 and DFT2) mounted on the outdoor coil. These are wired in se- ries into the DFT2 input on the DFB controller The continuous run period is a fixed time period between the end of the last defrost cycle (or start of the current Heat-...

  • Page 29: Electric Heaters

    ELECTRIC HEATERS Low-Voltage Control Connections Locate the plug assembly in the electric heater section of The RHV units may be equipped with field-installed acces- the main unit. Connect the plug with the mating low voltage sory electric heaters. The heaters are modular in design. plug located on the heater.
  • Page 30 Fig. 50 — Typical 547K*17-28 Control Wiring Diagram, Electro-Mechanical with W7220 Controller, 208/230V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.
  • Page 31 Fig. 51 — Typical 547K*17-28 Control Wiring Diagram, Electro-Mechanical with W7220 Controller, 460V, 575V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.
  • Page 32 Fig. 52 — Typical 547K*17 Power Wiring Diagram, Electro-Mechanical Controller, 15 Ton 208/230V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.
  • Page 33 Fig. 53 — Typical 547K*24-28 Power Wiring Diagram, Electro-Mechanical Controller, 20-25 Ton 208/230V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.
  • Page 34 Fig. 54 — Typical 547K*17 Power Wiring Diagram, Electro-Mechanical Controller, 15 Ton 460V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.
  • Page 35 Fig. 55 — Typical 547K*24-28 Power Wiring Diagram, Electro-Mechanical Controller, 460V-3-60 Unit Shown RHV-181-300-01SI Specifications subject to change without notice.

  • Page 36: Economi$Er X (Factory-Installed Option)

    EconoMi$er X (Factory-Installed Option) User Interface Provides status for normal operation, setup parameters, PRODUCT DESCRIPTION checkout tests, and alarm and error conditions with a 2-line The EconoMi$er X system is an expandable economizer ® 16 character LCD display and four button keypad. control system, which includes a W7220 economizer mod- Electrical ule (controller) with an LCD and keypad (see Fig.

  • Page 37: Economizer Module Wiring Details

    Storage Temperature: Table 5 — Economizer Module — Left Hand Terminal Blocks –40°F to 150°F (–40°C to 65°C) Shipping Temperature: LABEL TYPE DESCRIPTION –40°F to 150°F (–40°C to 65°C) Top Left Terminal Block Relative Humidity: 20k NTC Mixed Air Temperature Sensor (Polarity and COM Insensitive Connection) 5% to 95% RH non-condensing...

  • Page 38: Co 2 Sensor Wiring

    Sensor (Hot) Black Yellow Analog Brown – Orange Green SWITCH Power Supply. Provide Disconnect LABEL Means and Overload Protection As Required. Fig. 59 — CO Sensor Wiring SWITCHES INTERFACE OVERVIEW This section describes how to use the EconoMi$er ® X user interface for: •...

  • Page 39: Menu Structure

    3. Use the ▲ and ▼ buttons to scroll to the desired IMPORTANT: Table 9 illustrates the complete hierarchy. parameter. Your menu parameters may be different depending on 4. Press the (Enter) button to display the value of your configuration. the currently displayed item.
  • Page 40 Table 9 — W7220 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 41 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT MECH COOL ON Displays stage of mechanical cooling that is active. 0, 1, or 2 HEAT STAGES ON Displays the stage of heat pump heating that is active. STATUS SUPPLY FAN SPEED (cont)
  • Page 42 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT Exhaust fan set point for single speed units. Based on OA Damper EXH1 SET 0 to 100% position to activate power exhaust. EXHAUST FAN 1 SETPOINT AT LOW SPEED on 2 speed or 3 EXH1 L SET 0 to 100% speed with 1 heat and 2 cool.
  • Page 43 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT COOLING STAGE 3 DELAY 0 min, 5 min, Delay after stage 2 cool has been active. Turns on second stage of 15 min, then cooling when economizer is first stage and mechanical cooling is STG3 DLY 2.0h...
  • Page 44 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT DISCHARGE AIR S-BUS SENSOR ERROR DA SYLK T ERR Discharge air sensor has failed or become disconnected - check wiring then replace sensor if the alarm continues. OUTSIDE AIR TEMPERATURE SENSOR ERROR OA SENS T ERR Outdoor air temperature sensor has failed or become disconnected...

  • Page 45: Standard Or Single Speed Fan Operation

    The W (heating mode) is not controlled by the W7220 but it requires the status to know where to position the OA damp- FAN TYPE = 1 SPEED is not used on RHV181-300 units. er for minimum position for the fan speed.

  • Page 46: Operation

    The W7220 calculates the enthalpy and dew point using the OA temperature and humidity input from the OA enthalpy FAN TYPE = 2SP H/C is not used on RHV181-300 units sensor. When the OA temperature, OA humidity and OA dew point are all below the selected boundary, the...

  • Page 47: Checkout

    CHECKOUT The Checkout tests can all be performed at the time of in- stallation or at any time during the operation of the system Inspect all wiring connections at the economizer module’s as a test that the system is operable. terminals, and verify compliance with the installation wiring diagrams.

  • Page 48: Additional Application Data

    ADDITIONAL APPLICATION DATA 2. Using the chart on the Fan Speed Set Up labels (see Fig. 63), calculate the Vdc from the CFM and ESP for Refer to the Factory-Installed Smoke Detectors for Small the base unit. Then add Vdc for any accessories and Medium Rooftop Units 2 to 25 Tons application data for installed per the “Field Accessories”...
  • Page 49 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 50: Typical Unit Piping

    De-energized common liquid line with bi-flow TXV, and dedicated cooling Check Valve A Open and heating TXVs. RHV181-300 unit indoor coils contain a vapor header check valve. See Fig. 64-67 and Tables 13-21 Check Valve B Open for typical unit piping schematic parallel coil circuits during...
  • Page 51 LPS/LOC Filter Drier Heating TXV Heating TXV Reversing Valve Indoor Coil Outdoor Coils Fig. 64 — Piping Schematic — RHV181 Cooling Mode LPS/LOC Filter Drier Heating TXV Heating TXV Reversing Valve Indoor Coil Outdoor Coils Fig. 65 — Piping Schematic — RHV181 Heating Mode RHV-181-300-01SI Specifications subject to change without notice.

  • Page 52: Pre-Start And Start-Up

    LPS/LOC Filter Drier Heating TXV Heating TXV Reversing Valve Indoor Coil Outdoor Coils Fig. 66 — Piping Schematic — RHV240/300 Cooling Mode LPS/LOC Filter Drier Heating TXV Heating TXV Reversing Valve Indoor Coil Outdoor Coils Fig. 67 — Piping Schematic — RHV240/300 Heating Mode Pre-Start and Start-Up This completes the mechanical installation of the unit.
  • Page 54 © 2023 Carrier Lewisburg, TN 37091 USA Replaces: NEW RHV-181-300-01SI Specifications are subject to change without notice.

  • Page 55: Pre-Start-Up

    START-UP CHECKLIST — RHV SINGLE PACKAGED 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 56 © 2023 Carrier Lewisburg, TN 37091 USA Replaces: NEW RHV-181-300-01SI CL-2 Specifications are subject to change without notice. 2-23...

This manual is also suitable for:

Rhv240Rhv300

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