Page 1: Table Of Contents
Preferred™ Series 549J 04-06 Single Package Rooftop Heat Pump with Puron (R-410A) Refrigerant ® Installation Instructions TABLE OF CONTENTS • CHECKOUT • TROUBLESHOOTING SAFETY CONSIDERATIONS ..... 1 Smoke Detectors .
Page 2: Model Number Nomenclature And
DANGER CAUTION ELECTRICAL SHOCK HAZARD PERSONAL INJURY HAZARD Failure to follow this warning will result in personal injury Failure to follow this caution may result in personal injury. or death. Sheet metal parts may have sharp edges or burrs. Use care Before performing service or maintenance operations on and wear appropriate protective clothing, safety glasses and unit, turn off main power switch to unit and install lock(s)
Page 3 16 17 Unit Type High Efficiency Packaged Packaging Controls & Indoor Fan Motor Speed Heat Pump with optional Options electric heat A = Standard Packaging, electro mech. controls that require W7212 EconoMi$er IV B = LTL Packaging, electro mech. controls that require W7212 EconoMi$er IV Model C = Standard Packaging, electro mech.
Page 9: Installation
INSTALLATION Rig and place unit. Install outdoor air hood. Jobsite Survey Install condensate line trap and piping. Make electrical connections. Complete the following checks before installation. Install other accessories. Consult local building codes and the NEC (National Elec- trical Code) ANSI/NFPA 70 for special installation PAD-MOUNTED INSTALLATION requirements.
Page 10 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB001A02 [356] 549J 04-06 2’ - 0” CRRFCURB002A02 [610] Fig. 7 — Roof Curb Details...
Page 11: Alternate Unit Support
ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR Outlet grilles must not lie directly below unit discharge. SLAB MOUNT) NOTE: A 90 degree elbow must be provided in the ductwork to comply with UL (Underwriters Laboratories) code for use with A non-combustible sleeper rail can be used in the unit curb electric heat.
Page 12: Step 7 - Convert To Horizontal And Connect Ductwork
"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 549J 04 74.5 1890 48.5 33.5 549J 05 74.5 1890 37.5...
Page 13: Step 8 - Install Outside Air Hood
SCREWS REMOVE HOOD PARTS CUT PLASTIC TIES (2) PLACES ECONOMIZER DUCT COVERS SHEET METAL FACE UP BASEPAN Fig. 14 — Economizer Wiring TWO-POSITION DAMPER HOOD REMOVAL AND SETUP (FACTORY OPTION) The hood is shipped in knock-down form and assembled to a metal support tray using plastic stretch wrap.
Page 14: Step 9 - Units With Hinged Panels Only
Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws pro- vided to attach the hood sides to the unit. See Fig. 17. Remove the shipping tape holding the economizer baro- metric relief damper in place (economizer only).
Page 15: Step 11 - Make Electrical Connections
The field power wires are connected to the unit at line-side pressure lugs on compressor contactor C and indoor fan con- tactor IFC (see wiring diagram label for control box compo- nent arrangement) or at factory-installed option non-fused dis- connect switch. Maximum wire size is #2ga AWG (copper on- ly).
Page 16: All Units
Two types of convenience outlets are offered on 549J models: Units Without Disconnect Option non-powered and unit-powered. Both types provide a 125-v GFCI (ground-fault circuit interrupter) duplex receptacle rated (3 Phase at 15A behind a hinged waterproof access cover, located on the Indoor Motor) end panel of the unit.
Page 17: Factory Option Thru-Base Connections
Test the GFCI receptacle by pressing the TEST button on the GFCI RECEPTACLE face of the receptacle to trip and open the receptacle. Check for COVER - WHILE-IN-USE NOT INCLUDED WEATHERPROOF proper grounding wires and power line phasing if the GFCI re- ceptacle does not trip as required.
Page 18: Units Without Thru-Base Connections (Electrical Connections)
Operation on improper line voltage or excessive phase imbal- ance constitutes abuse and may cause damage to electrical HIGH VOLTAGE CONDUIT components. Such operation would invalidate any applicable CONNECTOR Bryant warranty. max voltage deviation from average voltage % Voltage = 100 x Imbalance average voltage Fig.
Page 19: Field Control Wiring
Open Controller for Building Management Systems (RTU Open is available as a factory-installed option only). THERMOSTAT Select a Bryant-approved accessory 2-stage Cooling/Heating thermostat. The 549J models do not require a thermostat with an O function to control the reversing valve operation. If using an electronic thermostat, configure it for “non-heat pump”...
Page 20 versing valve position. Reversing valves are energized during control system (RTU Open controller); it generates commands the cooling stages and the defrost cycle and de-energized to start compressors with or without reversing valve operation during heating cycles. Once energized at the start of a cooling to produce Stage 1 Cooling (one compressor runs), Stage 2 stage, the reversing valve will remain energized until the next Cooling (both compressors run) or Stage 1 Heating (both com-...
Page 21: Electric Heaters
Table 4 — DIP Switch Positions · · · · · · · · · 30 minutes 60 minutes 90 minutes 120 minutes Fan Delay (factory default) Auxiliary (Electric) Heat Control DISCONNECT MOUNTING The 549J unit can be equipped with one or two auxiliary elec- LOCATION tric heaters, to provide a second stage of heating.
Page 22: Control And Power Wiring Diagrams
Single Point Boxes and Supplementary Fuses Low Voltage Control Connections When the unit MOCP device value exceeds 60-A, unit-mount- Run the low-voltage control leads from the heater module(s) ed supplementary fuses are required for each heater circuit. — VIO and BRN (two of each if two modules are installed; These fuses are included in accessory single point boxes, with identify for Module #1) —...
Page 25 Fig. 43 — Electro-Mechanical Power Wiring: 208/230-1-60...
Page 26 Fig. 44 — Electro-Mechanical Power Wiring: 208/230-3-60...
Page 27 Fig. 45 — Electro-Mechanical Power Wiring: 460-3-60...
Page 28 Fig. 46 — Electro-Mechanical Power Wiring: 575-3-60...
Page 30: Economi$Er® X (Factory Option)
Economi$er ® X (Factory Option) User Interface Provides status for normal operation, setup parameters, check- The EconoMi$er X system is an expandable economizer con- out tests, and alarm and error conditions with a 2-line 16 char- trol system, which includes a W7220 economizer module (con- acter LCD display and four button keypad.
Page 31: Economizer Module Wiring Details
Storage Temperature Table 5 — Economizer Module - Left Hand Terminal –40°F to 150°F (–40°C to 65°C) Blocks Shipping Temperature LABEL TYPE DESCRIPTION –40°F to 150°F (–40°C to 65°C) Top Left Terminal Block Relative Humidity 20k NTC Mixed Air Temperature Sensor (Polarity 5% to 95% RH non-condensing and COM Insensitive Connection)
Page 32 SENSOR (HOT) BLACK YELLOW ANALOG BROWN – ORANGE GREEN POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION Switch AS REQUIRED. Label Fig. 51 — CO Sensor Wiring INTERFACE OVERVIEW This section describes how to use the EconoMi$er ® X user in- Switches terface for: •...
Page 33: Setup And Configuration
Press the ▲ button to increase (change) the displayed NOTE: Some parameters in the menus use the letters MA or parameter value. MAT, indicating a mixed air temperature sensor location before Press the ▼ button to decrease (change) the displayed the cooling coil.
Page 34 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 35 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † ACT POS 0 to 100% Displays actual position of actuator Displays number of times actuator has cycled. ACT COUNT 1 to 65,535 1 cycle equals 180 degrees of actuator movement in any direction.
Page 36 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † DCV MINIMUM DAMPER POSITION 2 to 10 vdc or 100 Displays only if a CO sensor is connected. Used for Va to 9990 cfm (ventilation min cfm) set point.
Page 37 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 low. Set 35°F to 65°F DA LO ALM 45F (7C) lower range of alarm, below this temperature the alarm will show (2°C to 18°C);...
Page 38 Table 9 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † ACTUATOR ERROR Actuator has failed or become disconnected - check for stall, ACT ERROR over voltage, under voltage and actuator count. Replace actuator if damper is movable and supply voltage is between 21.6 V and 26.4 V.
Page 39 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 40 Table 14 — Enthalpy Operation with 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 0-v/Off 0-v/Off Closed VENTMIN High 24-v/On 0-v/Off Closed VENTMIN High 24-v/On 24-v/On Closed...
Page 41: Checkout
ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 53 — Single Enthalpy Curve Boundaries Table 15 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY...
Page 42: Troubleshooting
The Checkout tests can all be performed at the time of installa- unit terminal board may be necessary to complete the unit and tion or at any time during the operation of the system as a test smoke detector configuration to meet project requirements. that the system is operable.
Page 43: Rtu Open Control System
RTU Open Control System Step 13 — Install Accessories For details on operating units equipped with the factory-in- Available accessories include: stalled RTU Open controller, refer to the “Factory-Installed • Roof curb RTU Open Multi-Protocol Controller Control, Start-Up, Oper- • Thru-base connection kit (must be installed before unit is ation and Troubleshooting”...
Page 44: Step 14 - Check Belt Tension
Step 14 — Check Belt Tension BLOWER PULLEY Measure the belt span length as shown in Fig. 57. Calculate the required deflection by multiplying the belt span length by V-BELT For example, if the belt span length is 32 inches: 32 x -in.
Page 45 Filter LPS/LOC Drier Cooling Liquid Line Check Valve DFT 1 Acutrol Acutrol Accurater (all 3, 4, and 5 ton units) Indoor Coil Outdoor Coil Strainer Accurater Heating Mode Liquid Line (3 and 4 ton units only) * Schematic shown in Heating Mode. Fig.
Page 46 © 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549009-01 Edition Date: 12-19 Printed in U.S.A. Form No: II549J-4-6-02 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: II549J-4-6-01...
Page 47 Start-Up Checklist for 549J 04-06 Single Package Rooftop Heat Pump (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 pre- ceding sections of this Installation Instruction document.
Page 48 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 set-points for thermostat and humidistat (Y/N) _____ © 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549009-01 Edition Date: 12-19 Printed in U.S.A.

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