Page 1: Table Of Contents
RHW036-060 Single Package Rooftop Heat Pump with R-410A Refrigerant and Optional Electric Heat Installation Instructions CONTENTS • SYSTEM COMPONENTS • INPUTS Page • OUTPUTS SAFETY CONSIDERATIONS ....1 •...
Page 2: Model Number Nomenclature And
product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, CAUTION reliability, or operation. PERSONAL INJURY HAZARD WARNING Failure follow this caution result personal injury. Electrical shock can cause personal injury and death. Sheet metal parts may have sharp edges or burrs. Use Shut off all power to this equipment during installation.
Page 3 See Specification Sheet for actual heating capacities. See Specification Sheet for details. Combinations of factory-installed options are available, see Specifications Sheet for details. Fig. 1 — RHW036-060 Model Number Nomenclature (Example) 527 01 2701 00 Specifications subject to change without notice.
Page 4 Fig. 2 — RHW036-060 Unit Dimensional Drawing...
Page 5 Fig. 2 — RHW036-060 Unit Dimensional Drawing (cont)
Page 6 Fig. 2 — RHW036-060 Unit Dimensional Drawing (cont)
Page 7: Installation
INSTALLATION 9. Install other accessories PAD-MOUNTED INSTALLATION Jobsite Survey 1. Prepare pad and unit supports Complete the following checks before installation. 2. Check and tighten the bottom condensate drain con- 1. Consult local building codes and the NEC (National nection plug Electrical Code) ANSI/NFPA 70 for special installa- 3.
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: Step 5 - Field Fabricate Ductwork
WARNING PERSONAL INJURY HAZARD Failure 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 RHW036 74.5 1890 36.0 33.5 RHW048 74.5 1890 35.4 41.5 1055...
Page 11: Step 8 - Install Outside Air Hood
Step 8 — Install Outside Air Hood ECONOMIZER AND TWO-POSITION HOOD NOTE: If the power exhaust accessory is to be installed on ECONOMIZER HOOD AND TWO-POSITION DAMPER the unit, the hood shipped with the unit will not be used and HOOD PACKAGE REMOVAL AND SETUP FACTORY must be discarded.
Page 12: Step 9 - Units With Hinged Panels Only
The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 16. NOTE: If the alternate bottom drain is not used check the drain plug for tightness prior to setting the unit on the roof curb.
Page 13: Units With Factory-Installed Non-Fused
option non-fused disconnect switch. Maximum wire size is #2ga AWG (copper only) per pole on contactors, #2ga Units Without Single Point Box or Disconnect Option AWG (copper only) per pole on optional disconnect, and Equip 4/0 AWG (copper only, see Fig. 17) per pole on terminal GR Lug or fuse blocks on units with single point box (see Fig.
Page 14: All Units
6. Measure from the tip of the shaft to the top surface of (copper only) per pole on terminal or fuse block on units with single point box. See Fig. 18 and unit label diagram for field the black pointer; the measurement should be 3.75 to power wiring connections.
Page 15 GFCI RECEPTACLE COVER - WHILE-IN-USE NOT INCLUDED WEATHERPROOF Fig. 22 — Convenience Outlet Utilization Notice Label Installing Weatherproof Cover A weatherproof while-in-use cover for the factory-installed GASKET convenience outlets is now required by UL standards. This cover cannot be factory-mounted due its depth; it must be installed at unit installation.
Page 16: Factory Option Thru-Base Connections
HIGH VOLTAGE CONDUIT LOW VOLTAGE CONNECTOR CONDUIT CONNECTOR AUXILIARY POWER SUPPLY (OPTIONAL) Fig. 26 — Thru-Base Connection Fittings UNIT CONNECT PRIMARY TRANSFORMER 1. Remove the “L” bracket assembly from the unit. VOLTAGE CONNECTIONS TERMINALS 2. Remove connector plate assembly from the “L” L1: RED +YEL H1 + H3 208, 230...
Page 17: Field Control Wiring
Example: Supply voltage is 230-3-60 Typical Unit Control Thermostat max voltage deviation from average voltage % Voltage Board = 100 x Connections Imbalance average voltage Example: Supply voltage is 230-3-60 AB = 224 v BC = 231 v AC = 226 v MOTOR (224 + 231 + 226) Average Voltage =...
Page 18: Commercial Defrost Control
Refer to Table 3 for details of DFB Inputs and Outputs. SWITCHES SPEED-UP JUMPERS Fig. 29 — Defrost Control Board Arrangement Fig. 30 — Defrost Control Board Location - RHW036-060 Electro-Mechanical Units Specifications subject to change without notice.
Page 19 Table 3 — RHW 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 by- passes 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 con- trolling DFT opens or the 10 minute defrost 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 — Figures 37-40 are typical control and power wiring VIO and BRN (two of each if a two-circuit heater module is diagrams. installed; identify for circuit #1) — to the 4-pole terminal board TB4 located on the heater bulkhead to the left of the Heater module.
Page 22 Fig. 37 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 RHW036-060 208-230/3/60 Unit Shown)
Page 23 Fig. 38 — Typical Control Wiring Diagram, Electro-Mechanical with W7220 (RHW036-060 460, 575/3/60 Unit Shown)
Page 24 Fig. 39 — Typical RHW036-060 Power Wiring Diagram, 208-230/3/60 Unit Shown Specifications subject to change without notice.
Page 25 Fig. 40 — Typical RHW036-060 Power Wiring Diagram, 460, 575/3/60 Unit Shown 527 01 2701 00 Specifications subject to change without notice.
Page 26: Economi$Er X (Factory Option)
EconoMi$er X (Factory Option) Electrical • 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 mod- • Transformer — 100 va maximum system input ule (controller) with an LCD and keypad (see Fig.
Page 27: Economizer Module Wiring Details
Table 6 — Economizer Module - Right Hand Terminal Relative Humidity Blocks 5% to 95% RH non-condensing LABEL TYPE DESCRIPTION ECONOMIZER MODULE WIRING DETAILS Top Right Terminal Blocks Use Fig. 42 and Tables 5 and 6 to locate the wiring termi- AUX2 I 24 vac IN The first terminal is not used.
Page 28: Co2 Sensor Wiring
Keypad Table 7 — HH57AC081 Sensor Wiring Terminations Use the four navigation buttons (see Fig. 45) to scroll TERMINAL through the menus and menu items, select menu items, TYPE DESCRIPTION and to change parameter and configuration settings. NUMBER LABEL To use the keypad when working with menus: S-BUS Communications •...
Page 29 NOTE: Some parameters in the menus use the letters IMPORTANT: Table 9 illustrates the complete hierarchy. MA or MAT, indicating a mixed air temperature sensor lo- Your menu parameters may be different depending on cation before the cooling coil. This unit application has your configuration.
Page 30 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † ACTUATOR OK/Alarm (on Displays ERROR if voltage or torque is below actuator range. Alarm menu) EXH1 OUT ON/OFF EXHAUST STAGE 1 RELAY OUTPUT Output of EXH1 terminal: ON = relay closed OFF = relay open...
Page 31 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † VENTMIN L 3.7 V 2 to 10 Vdc DCV MINIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1 heat and 1 cool then set for HEATING ventilation.
Page 32 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † MA LO SET 45°F 35 to 55°F; SUPPLY AIR TEMPERATURE LOW LIMIT Incremented by 10 Temperature to achieve Freeze Protection (close damper and alarm if temperature falls below setup value).
Page 33 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT † CO2 SENS ERR SENSOR ERROR sensor has failed, gone out of range or become disconnected - check wiring then replace sensor if the alarm continues. OA SYLK T ERR OUTSIDE AIR S-BUS SENSOR ERROR Outdoor air enthalpy sensor has failed or become disconnected -...
Page 34: Setup And Configuration
SETUP AND CONFIGURATION Enthalpy Settings When the OA temperature, enthalpy and dew point are be- Before being placed into service, the W7220 economizer low the respective setpoints, the Outdoor Air can be used module must be set up and configured for the installed for economizing.
Page 35 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 = 1SPEED is not used on RHW units. er for minimum position for the fan speed. 2 Speed Fan Operation The 2 speed fan delay is available when the system is pro- The W7220 controller has the capability to work with a sys-...
Page 36: Checkout
2SP H/C and 3 Speed Fan Operation The Checkout tests can all be performed at the time of in- stallation or at any time during the operation of the system FAN TYPE = 2SP H/C and FAN TYPE = 3SPEED are not as a test that the system is operable.
Page 37: Completing Return Air Smoke Sensor Installation
Step 12 — Adjust Factory-Installed Options SMOKE DETECTORS RETURN AIR Smoke detector(s) will be connected at the Unit Control SMOKE DETECTOR Board (UCB), at terminals marked “Smoke Shutdown.” De- (AS SHIPPED) tach the jumper covering the Smoke Shutdown terminals on the UCB and then attach the wiring harness from the smoke detector.
Page 38: Step 14 - Fan Speed Set Up
Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper Fig. 49 — 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 39 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 40: Typical Unit Piping
Typical Unit Piping Table 14 — Cooling Mode (each circuit) Each heat pump refrigeration system includes a compres- COMPONENT STATUS/POSITION sor, accumulator, reversing valve, dual-function outdoor coil Check Valve D Open with vapor header check valve, cooling liquid line with a filter drier and a check valve, dual-function indoor coil with a va- Table 15 —...
Page 42 © 2020 Carrier Lewisburg, TN 37091 USA Replaces: New 527 01 2701 00 Specifications are subject to change without notice.
Page 43: Start-Up Checklist
START-UP CHECKLIST RHW036-060 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 44 © 2020 Carrier Lewisburg, TN 37091 USA Replaces: New 527 01 2701 00 CL-2 Specifications are subject to change without notice. 7/2020...

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