Bryant 549J Series Installation Instructions Manual
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Bryant 549J Series Installation Instructions Manual

Bryant 549J Series Installation Instructions Manual

Single package rooftop heat pump with puron (r-410a) refrigerant
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549J 04-06
Single Package Rooftop Heat Pump with
®
Puron
(R-410A) Refrigerant
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . .1
MODEL NUMBER NOMENCLATURE
AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Job Site Survey. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . . . .5
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . . . .7
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB
OR SLAB MOUNT)
Step 5 — Field Fabricate Ductwork. . . . . . . . . . . . . . . . .9
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . . . . .9
Step 7 — Convert to Horizontal and
Connect Ductwork (when required) . . . . . . . . . . . . .10
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . . .11
• ECONOMIZER HOOD REMOVAL AND SETUP
• TWO-POSITION DAMPER HOOD REMOVAL AND
SETUP
• ECONOMIZER AND TWO-POSITION HOOD
ASSEMBLY
Step 9 — Units with Hinged Panels Only . . . . . . . . . . .12
Step 10 — Install External Condensate Trap
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Step 11 — Make Electrical Connections . . . . . . . . . . . .13
• FIELD POWER SUPPLY
• UNITS WITHOUT FACTORY-INSTALLED
DISCONNECT
• UNITS WITH FACTORY-INSTALLED DISCONNECT
• ALL UNITS
• CONVENIENCE OUTLETS
• FACTORY-OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• UNITS WITHOUT THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• FIELD CONTROL WIRING
• THERMOSTAT
• HEAT ANTICIPATOR SETTINGS
• COMMERCIAL DEFROST CONTROL
• ELECTRIC HEATERS
• CONTROL AND POWER WIRING DIAGRAMS
• ECONOMI$ER (FACTORY OPTION)
• SMOKE DETECTORS
• RTU OPEN CONTROLLER (FACTORY OPTION)
• CONTROLLER OPTIONS
Installation Instructions
Step 12 — Adjust Factory-Installed Options . . . . . . . . 41
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 13 — Install Accessories. . . . . . . . . . . . . . . . . . . . . 41
Step 14 — Check Belt Tension . . . . . . . . . . . . . . . . . . . . 43
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1
SAFETY CONSIDERATIONS
Improper
installation,
maintenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloths for brazing operations and have a fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult local
building codes and appropriate national electrical codes (in USA,
ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA
C22.1) for special requirements.
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. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury or
death.
Before performing service or maintenance operations on unit,
turn off main power switch to unit and install lock(s) and lock-
out tag(s). Ensure electrical service to rooftop unit agrees with
voltage and amperage listed on the unit rating plate. Unit may
have more than one power switch.
adjustment,
alteration,
service,

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Summary of Contents for Bryant 549J Series

  • Page 1 549J 04-06 Single Package Rooftop Heat Pump with ® Puron (R-410A) Refrigerant Installation Instructions SAFETY CONSIDERATIONS ....1 Step 12 — Adjust Factory-Installed Options ..41 MODEL NUMBER NOMENCLATURE •...
  • Page 2 MODEL NUMBER NOMENCLATURE AND DIMENSIONS WARNING See Fig. 1 for 549J model number nomenclature. See Fig. 2 for UNIT OPERATION AND SAFETY HAZARD unit dimensional drawings. Figure 3 shows service clearance di- mensions. Failure to follow this warning could cause personal injury, death and/or equipment damage.
  • 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 4 Vertical Connections / Economizer Horizontal Connections / Economizer Fig. 2 — Unit Dimensional Drawing — 04-06 Size Units...

  • Page 5: Installation

    Fig. 2 — Unit Dimensional Drawing — 04-06 Size Units (cont) INSTALLATION Step 1 — Plan for Unit Location Select a location for the unit and its support system (curb or other) Jobsite Survey that provides for the minimum clearances required for safety (in- Complete the following checks before installation.

  • Page 6: Roof Mount

    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 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36-in.

  • Page 7: Roof Curb Mount

    Step 3 — Inspect Unit SLAB MOUNT (HORIZONTAL UNITS ONLY) Inspect unit for transportation damage. File any claim with trans- Provide a level concrete slab that extends a minimum of 6 in. (150 portation agency. mm) beyond unit cabinet. Install a gravel apron in front of con- denser coil air inlet to prevent grass and foliage from obstructing Confirm before installation of unit that voltage, amperage and cir- airflow.
  • Page 8 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB001A01 [356] 549J*04-06A 2’ - 0” CRRFCURB002A01 [610] Fig. 4 — Roof Curb Details...
  • Page 9 WARNING Failure to 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 condi- tioned space.
  • Page 10 "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*04A 74.5 1890 48.5 33.5 549J*05A 74.5 1890 37.5 41.5 1055...

  • Page 11: Economizer Hood Removal And Setup

    SCREWS REMOVE HOOD PARTS CUT PLASTIC TIES (2) PLACES ECONOMIZER DUCT COVERS SHEET METAL FACE UP BASEPAN Fig. 11 — Economizer Wiring TWO-POSITION DAMPER HOOD REMOVAL AND SETUP (FACTORY OPTION) The hood is shipped in knock-down form and assembled to a met- al support tray using plastic stretch wrap.
  • Page 12 ECONOMIZER AND TWO-POSITION HOOD Caulk the ends of the joint between the unit top panel and ASSEMBLY the hood top. Replace the filter access panel. NOTE: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded.

  • Page 13: Fire Hazard

    (Check with local codes to ensure this method is acceptable in your area.) If a de-energize via unit disconnect switch operation of the convenience outlet is desired, connect the source leads to the load side of the unit disconnect. On a unit without a unit-mounted disconnect, connect the source leads to compressor contactor C and indoor fan contactor IFC pressure lugs with unit field power leads.

  • Page 14: 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-volt GFCI (ground-fault circuit interrupter) duplex receptacle rated at (3 Phase 15A behind a hinged waterproof access cover, located on the end Indoor Motor) panel of the unit.
  • Page 15 GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE WEATHERPROOF GASKET BASEPLATE FOR GFCI RECEPTACLE Fig. 22 — Weatherproof Cover Installation Non-Powered Convenience Outlet UNIT CONNECT PRIMARY TRANSFORMER This type requires the field installation of a general-purpose 125v VOLTAGE CONNECTIONS TERMINALS 15A circuit powered from a source elsewhere in the building. Ob- L1: RED + YEL H1 + H3 208, 230...

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

    CONNECTOR (RTU Open is available as a factory-installed option only). THERMOSTAT Select a Bryant-approved accessory 2-stage Cooling/Heating ther- mostat. The 549J models do not require a thermostat with an O Fig. 25 — Thru-Base Connection Fittings function to control the reversing valve operation. If using an elec- tronic thermostat, configure it for “non-heat pump”...

  • Page 17: Heat Anticipator Settings

    HEAT ANTICIPATOR SETTINGS Set heat anticipator settings at 0.14 amp for the first stage and 0.14 Typical Central amp for second-stage heating, when available. Thermostat Terminal Connections Board COMMERCIAL DEFROST CONTROL The Commercial Defrost Control Board (DFB) coordinates ther- mostat demands for supply fan control, 1 or 2 stage cooling, 2 stage heating, emergency heating and defrost control with unit op- erating sequences.
  • Page 18 Fig. 29 — Defrost Control Board Location Table 3 — 549J 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 19: Electric Heaters

    Auxiliary (Electric) Heat Control The 549J unit can be equipped with one or two auxiliary electric DISCONNECT MOUNTING LOCATION heaters, to provide a second stage of heating. The DFB will ener- gize this Heating System for a Stage 2 Heating Command (heaters operate concurrently with compressor(s) in the Stage 1 Heating cycle), for an Emergency Heating sequence (compressors are off and only the electric heaters are energized) and also during the De-...
  • Page 20 Single Point Boxes and Supplementary Fuses CONTROL When the unit MOCP device value exceeds 60-A, unit-mounted supplementary fuses are required for each heater circuit. These BUSHING fuses are included in accessory single point boxes, with power dis- tribution and fuse blocks. The single point box will be installed di- rectly under the unit control box, just to the left of the partition SINGLE POINT BOX...
  • Page 21 Low Voltage Control Connections CONTROL AND POWER WIRING DIAGRAMS Run the low-voltage control leads from the heater module(s) — Figures 36-42 are typical control and power wiring diagrams. VIO and BRN (two of each if two modules are installed; identify for Module #1) —...
  • Page 22 Fig. 36 — Electro-Mechanical Control Wiring: 208/230v, 460v...
  • Page 23 Fig. 37 — Electro-Mechanical Control Wiring: 575v...
  • Page 24 Fig. 38 — Electro-Mechanical Power Wiring: 208/230-1-60...
  • Page 25 Fig. 39 — Electro-Mechanical Power Wiring: 208/230-3-60...
  • Page 26 Fig. 40 — Electro-Mechanical Power Wiring: 460-3-60...
  • Page 27 Fig. 41 — Electro-Mechanical Power Wiring: 575-3-60...
  • Page 28 Fig. 42 — RTU Open System Control Wiring...

  • Page 29: Specifications

    ECONOMI$ER (FACTORY OPTION) Electrical ® • Rated Voltage — 20 to 30 Vac RMS, 50/60 Hz The EconoMi$er X system is an expandable economizer control system, which includes a W7220 economizer module (controller) • Transformer — 100 va maximum system input with an LCD and keypad (see Fig.
  • Page 30 Relative Humidity Table 6 — Economizer Module - Left Hand Terminal Blocks 5% to 95% RH non-condensing LABEL TYPE DESCRIPTION Economizer Module Wiring Details TOP LEFT TERMINAL BLOCK Use Fig. 44 and Tables 6 and 7 to locate the wiring terminals for 20k NTC Mixed Air Temperature Sensor (Polarity the Economizer module.
  • Page 31 S-Bus Sensor Wiring Sensor Wiring The labels on the sensors and controller are color coded for ease of When using a CO sensor the black and brown common wires are installation. Orange labeled sensors can only be wired to orange internally connected and only one is connected to “IAQ COM”...
  • Page 32 To use the keypad when working with Setpoints, System and Ad- vanced Settings, Checkout tests and Alarms: IMPORTANT: Table 10 illustrates the complete hier- Navigate to the desired menu. archy. Your menu parameters may be different Press the (Enter) button to display the first item in the depending on your configuration.
  • Page 33 Table 10 — 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 34 Table 10 — 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 35 Table 10 — 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 36 Table 10 — 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...
  • Page 37 Table 10 — 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 completing a calibration on the dampers, this alarm will display.
  • Page 38 Table 12 — Dry Bulb 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...
  • Page 39 Table 15 — 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 0v/Off 0v/Off VENTMIN Closed HIGH 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN...

  • Page 40: Troubleshooting

    ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 48 — Single Enthalpy Curve Boundaries Checkout NOTE: For information about menu navigation and use of the keypad see Interface Overview on page 31. Inspect all wiring connections at the economizer module’s termi- nals, and verify compliance with the installation wiring diagrams.

  • Page 41: Smoke Detectors

    Press the (Menu Up/Exit) button to complete the action Additional Application Data and return to the previous menu. Refer to the application data document “Factory Installed Smoke Detectors for Small and Medium Rooftop Units 2 to 25 Tons” for NOTE: If the alarm still exists after clearing it, it is redisplayed discussions on additional control features of these smoke detectors within 5 seconds.
  • Page 42 STEP 1 STEP 2 STEP 3 Fig. 50 — Completing Installation of Return Air Smoke Sensor Fig. 51 — EconoMi$er IV Wiring...

  • Page 43: Belt Force - Deflection Method

    Step 14 — Check Belt Tension BLOWER PULLEY Measure the belt span length as shown in Fig. 52. Calculate the re- quired deflection by multiplying the belt span length by . For V-BELT example, if the belt span length is 32 inches: 32 x inch deflection.
  • Page 44 Filter LPS/LOC Drier Cooling Liquid Line 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) Fig. 54 — Typical Unit Piping Schematic (with TXV valves on Indoor Coils) Table 17 —...
  • Page 46 Copyright 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549007-01 Edition Date: 1/19 Printed in U.S.A. Form No: II549J-4-6-01 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: II549J-01...

  • Page 47: Preliminary Information

    START-UP CHECKLIST FOR 549J04-06 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 preced- ing sections of this Installation Instruction document.
  • Page 48 GENERAL Economizer minimum vent and changeover settings to job requirements (if equipped) (Y/N) _____ Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____ Copyright 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549007-01 Edition Date: 1/19 Printed in U.S.A.

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