International comfort products RHS072 Installation Instructions Manual
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International comfort products RHS072 Installation Instructions Manual

International comfort products RHS072 Installation Instructions Manual

Single package rooftop with heat pump with r-410a refrigerant
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RHS072 units for installation in the United States contain use of ICP's 2-speed indoor fan control
system. This complies with the U.S. Department of Energy (DOE) efficiency standard of 2018.
RHS072 units for installation outside the United States may or may not contain use of the 2-speed
indoor fan control system, as they are not required to comply with the U.S. Department of Energy
(DOE) efficiency standard of 2018.
For specific details on operation of the ICP 2-speed indoor fan system, refer to the Variable
Frequency Drive (VFD) Factory-Installed Option 2-Speed Motor Control Installation, Setup and
Troubleshooting manual.
NOTE: Read the entire instruction manual before starting the
installation.
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• REFRIGERANT SYSTEM PRESSURE ACCESS
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . 10
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . 11
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . 13
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . 13
(when required) . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . 15
HOOD PACKAGE REMOVAL AND SETUP -
FACTORY OPTION
RHS072
Single Package Rooftop with Heat Pump
with R-410A Refrigerant
Installation Instructions
Central Terminal Board . . . . . . . . . . . . . . . . . . . . . . . 23
Commercial Defrost Control . . . . . . . . . . . . . . . . . . . 23
Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Economi$er® X (Factory Option) . . . . . . . . . . . . . . . 26
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
516 01 2302 02
4-19

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Summary of Contents for International comfort products RHS072

  • Page 1: Table Of Contents

    This complies with the U.S. Department of Energy (DOE) efficiency standard of 2018. RHS072 units for installation outside the United States may or may not contain use of the 2-speed indoor fan control system, as they are not required to comply with the U.S. Department of Energy (DOE) efficiency standard of 2018.

  • Page 2: Safety Considerations

    ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal in- MODEL NUMBER FULL LOAD AIRFLOW (CFM) jury or death. RHS072 2100 Before performing service or maintenance operations Pre-Installation on unit, turn off main power switch to unit and install Complete the following checks before installation.
  • Page 3 MODEL SERIES Position Number R = Rooftop H = Heat Pump Type S = Standard DOE/ASHRAE 90.1 Efficiency Efficiency 072 = 6 Tons (1 circuit/one stage cooling) Nominal Cooling Capacity H = 208/230-3-60 L = 460-3-60 S = 575-3-60 Voltage 0 = No Heat Heating Capacity A = Standard Motor/Drive...
  • Page 4 Fig. 2 — Dimensional Drawing for Units Built On or After 4/15/19 516 01 2302 02 Specifications subject to change without notice.
  • Page 5 Fig. 3 — Dimensional Drawing for Units Built Prior to 4/15/19 516 01 2302 02 Specifications subject to change without notice.
  • Page 6 Fig. 4 — Corner Weights and Clearances 516 01 2302 02 Specifications subject to change without notice.
  • Page 7 Fig. 5 — Base Rail Details 516 01 2302 02 Specifications subject to change without notice.
  • Page 8 Fig. 6 — Thru-the-Base Charts 516 01 2302 02 Specifications subject to change without notice.

  • Page 9: Refrigeration System Components

    106 in.-lb (11.9 Nm) when tightening. HEATING MODE LIQUID LINES COOLING MODE LIQUID LINES FILTER DRYER ACUTROL HEATING MODE STRAINER Fig. 7 — Unit Piping Schematic for RHS072 516 01 2302 02 Specifications subject to change without notice.

  • Page 10: Installation

    Fig. 8 — CoreMax Access Port Assembly INSTALLATION Table 5 — Operating Weights Jobsite Survey RHS072 UNITS LB (KG) Complete the following checks before installation. Base Unit 630 (286) 1. Consult local building codes and the NEC (National...

  • Page 11: Frame-Mounted Installation

    FRAME-MOUNTED INSTALLATION Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb Frame-mounted applications generally follow the se- and not to the unit. The accessory thru-the-base power quence for a curb installation. Adapt as required to suit package must be installed before the unit is set on the specific installation plan.
  • Page 12 Fig. 10 — Roof Curb Details 516 01 2302 02 Specifications subject to change without notice.

  • Page 13: Step 5 - Field Fabricate Ductwork

    Step 5 — Field Fabricate Ductwork Step 6 — Rig and Place Unit Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or CAUTION 0.45 in. wg (112 Pa) without economizer. For vertical ducted applications, secure all ducts to roof UNIT DAMAGE HAZARD curb and building structure.

  • Page 14: Positioning On Curb

    DIMENSIONS MAX WEIGHT UNIT RHS072 74.38 1889 37.25 41.38 1051 NOTES: 1. Dimensions in () are in millimeters. 2. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit’s center of gravity. Use wooden top to prevent rigging straps from damaging unit.

  • Page 15: 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. 16 — Economizer and Two-Position Damper Hood Parts Location 4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in “Economizer Hood and Two- Position Hood”...

  • Page 16: Step 10 - Install External Condensate Trap And Line

    PANEL INDOOR COIL ACCESS PANEL LEFT HOOD SCREW SIDE 19 1/16” (483mm) Fig. 20 — 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 Fig.

  • Page 17: Step 11 - Make Electrical Connections

    Step 11 — Make Electrical Connections Units Without Non-Fused Disconnect Option WARNING (3 Phase Indoor Motor) Failure to follow this warning could result in personal (1 Phase Indoor Motor injury or death. and 1 Phase Unit) Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of person- Disconnect...
  • Page 18 Fig. 25 — RHS Control Wiring Diagram 516 01 2302 02 Specifications subject to change without notice.

  • Page 19: Units With Factory-Installed Non-Fused Disconnect

    Fig. 26 — Typical RHS072 Power Wiring Diagram (208/230v-3 Ph-60 Hz Unit Shown) UNITS WITH FACTORY-INSTALLED NON-FUSED 4. Make sure the NFD shipped from the factory is at OFF position (the arrow on the black handle knob is DISCONNECT at OFF).

  • Page 20: Units Without Factory-Installed Non-Fused Disconnect

    wires will be connected line-side pressure lugs on the power terminal block or at factory-installed option non- fused disconnect. NOTE: Check all factory and field electrical connections for tightness. CONVENIENCE OUTLETS WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death.

  • Page 21: Factory-Option Thru-Base Connections

    GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE WEATHERPROOF GASKET BASEPLATE FOR GFCI RECEPTACLE Fig. 30 — Weatherproof Cover Installation UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE CONNECTIONS TERMINALS Non-powered type L1: RED +YEL H1 + H3 208, 230 This type requires the field installation of a general-pur- L2: BLU + GRA H2 + H4 pose 125-v 15-A circuit powered from a source else-...

  • Page 22: Units Without Thru-Base Connections

    Example: Supply voltage is 230-3-60 AB = 224 v BC = 231 v LOW VOLTAGE CONDUIT AC = 226 v CONNECTOR MOTOR (224 + 231 + 226) Average Voltage = 227 Determine maximum deviation from average voltage. (AB) 227-224 = 3 v (BC) 231-227 = 4 v HIGH VOLTAGE CONDUIT...

  • Page 23: Unit Without Thru-Base Connection Kit

    Locate the thermostat accessory on a solid wall in the Commercial Defrost Control conditioned space to sense average temperature in ac- The Commercial Defrost Control Board (DFB) coordi- cordance with the thermostat installation instructions. If nates thermostat demands for supply fan control, 1 or 2 the thermostat contains a logic circuit requiring 24-v pow- stage cooling, 2 stage heating, emergency heating and er, use a thermostat cable or equivalent single leads of...

  • Page 24: Auxiliary (Electric) Heat Control

    Fig. 38 — Defrost Control Board Location Table 6 — RHS 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...

  • Page 25: Electric Heaters

    The continuous run period is a fixed time period between DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET the end of the last defrost cycle (or start of the current MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH Heating cycle) during which no defrost will be permitted. LOCATION HEATER COVERS...

  • Page 26: Single Point Boxes Without Fuses

    Economi$er ® X (Factory Option) CONTROL The EconoMi$er X system is an expandable economizer control system, which includes a W7220 economizer mod- BUSHING ule (controller) with an LCD and keypad (See Fig. 45). The W7220 can be configured with optional sensors. SINGLE POINT BOX MOUNTING...

  • Page 27: Inputs

    User Interface Exception of display operation down to –4°F with full recovery at –4°F from exposure to –40°F Provides status for normal operation, setup parameters, Storage Temperature checkout tests, and alarm and error conditions with a 2- line 16 character LCD display and four button keypad. –40°F to 150°F (–40°C to 65°C) Electrical Shipping Temperature...

  • Page 28: Interface Overview

    Table 9 — Economizer Module Table 10 — HH57AC081 Sensor Wiring Terminations (Right Hand Terminal Blocks) TERMINAL TYPE DESCRIPTION LABEL TYPE DESCRIPTION NUMBER LABEL Top Right Terminal Blocks S-BUS Communications AUX2 I 24 vac IN The first terminal is not used. S-BUS S-BUS (Enthalpy Control...

  • Page 29: Setup And Configuration

    To use the keypad when working with menus: 1. Press the (Enter) button to accept the displayed value and store it in nonvolatile RAM. “CHANGE • Press the ▲ (Up arrow) button to move to the previ- STORED” displays. ous menu. 2.
  • Page 30 Table 12 — 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 31 Table 12 — 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 32 Table 12 — 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 33 Table 12 — 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 34 Table 12 — 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 35 Table 13 — Damper Minimum Position Settings and Readings on Checkout Menu DEMAND CONTROLLED VENTILATION FAN SPEED SETPOINTS 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 36 Table 16 — Enthalpy 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 24-v/On...
  • Page 37 Table 19 — Dry Bulb Operation with 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 VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed...

  • Page 38: Enthalpy Settings

    Table 21 — Enthalpy Operation with 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 VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed 0v/Off...

  • Page 39: Checkout

    ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 50 — Single Enthalpy Curve Boundaries Table 23 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY...

  • Page 40: Smoke Detectors

    Clearing Alarms 3. Screw the sensor and detector plate into its operating position using screws from Step 1. See Fig. 52, Once the alarm has been identified and the cause has Step 3. been removed (e.g. replaced faulty sensor) the alarm can 4.
  • Page 41 2 Position Damper Unit Without Economizer or Economizer 2 Position Damper Fig. 53 — EconoMi$er IV Wiring ® Step 12 — Adjust Factory-Installed Options • Electric heaters • Single point kits SMOKE DETECTORS • sensor Smoke detector(s) will be connected at the Controls Con- •...
  • Page 42 Fig. 54 — V-Belt Force Label BELT TENSION METHOD Requires belt tension gage that measures tension in belt in units of lbs-force. Copyright 2019 International Comfort Products Lewisburg, TN 37091 USA Replaces: 516 01 2302 01 516 01 2302 02 Specifications are subject to change without notice.

  • Page 43: Start-Up Checklist

    START-UP CHECKLIST (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 44 8. Open W1 restore unit to dehumid mode (Y/N) _____ 9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____ 10. Restore setpoints for thermostat and humidistat (Y/N) _____ Copyright 2019 International Comfort Products Lewisburg, TN 37091 USA Replaces: 516 01 2302 01...

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