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549J 07-09
Single Package Rooftop Heat Pump
with Puron
®
(R-410A) Refrigerant
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE
AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Job Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 8
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . 9
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . 9
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB
OR SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . 11
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . 11
Step 7 — Convert to Horizontal and
Connect Ductwork (when required) . . . . . . . . . . . 12
Step 8 — Install Outside Air Hood . . . . . . . . . . . . 13
• 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 . . . . . . . 14
Step 10 — Install External Condensate Trap
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Step 11 — Make Electrical Connections . . . . . . . 15
• 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
Installation Instructions
• THERMOSTAT
• HEAT ANTICIPATOR SETTINGS
• COMMERCIAL DEFROST CONTROL
• ELECTRIC HEATERS
• CONTROL AND POWER WIRING DIAGRAMS
• ECONOMI$ER (FACTORY OPTION)
• SMOKE DETECTORS
• RTU OPEN CONTROLLER (FACTORY OPTION)
• CONTROLLER OPTIONS
Step 12 — Adjust Factory-Installed Options . . . 44
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 13 — Install Accessories . . . . . . . . . . . . . . . 44
Step 14 — Check Belt Tension . . . . . . . . . . . . . . 46
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . 46
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . 46
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.
adjustment,
alteration,
service,
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Table of Contents
Related Manuals for Bryant 549J 07A Series
Summary of Contents for Bryant 549J 07A Series
- Page 1 549J 07-09 Single Package Rooftop Heat Pump with Puron ® (R-410A) Refrigerant Installation Instructions • THERMOSTAT SAFETY CONSIDERATIONS ....1 • HEAT ANTICIPATOR SETTINGS MODEL NUMBER NOMENCLATURE AND DIMENSIONS .
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Page 2: Cut Hazard
MODEL NUMBER NOMENCLATURE AND DIMENSIONS WARNING See Fig. 1 for 549J model number nomenclature. See Fig. 2 and 3 ELECTRICAL SHOCK HAZARD for unit dimensional drawings. Figure 4 shows service clearance dimensions. Failure to follow this warning could cause personal injury or death. - Page 3 Position: 10 11 12 13 14 15 16 17 Example: Unit Type Packaging & 2-Speed Indoor Fan Motor 549 - High Efficiency A = Standard Packaging, electro-mechanical Packaged Heat Pump controls that require W7212 EconoMi$er ® with optional electric heat B = LTL Packaging, electro-mechanical controls that require W7212 EconoMi$er IV C = Standard Packaging, electro-mechanical...
- Page 4 Fig. 2 — Unit Dimensional Drawing — 07-08 Size Units...
- Page 5 Fig. 2 — Unit Dimensional Drawing — 07-08 Size Units (cont)
- Page 6 Fig. 3 — Unit Dimensional Drawing — 09 Size Units...
- Page 7 Fig. 3 — Unit Dimensional Drawing — 09 Size Units (cont)
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Page 8: Installation
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. cluding clearance to combustible surfaces), unit performance and Consult local building codes and the NEC (National Elec- service access below, around and above unit as specified in unit drawings. -
Page 9: Frame-Mounted Installation
ROOF MOUNT Locate the carton containing the outside air hood parts. Do not re- move carton until unit has been rigged and located in final posi- Check building codes for weight distribution requirements. Unit tion. operating weight is shown in Table 2. Step 4 —... - Page 10 Fig. 5 — Roof Curb Details...
- Page 11 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 12 "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*07A/D 1100 88.0 2235 40.8 1035 41.5 1055 549J*08D 1315 88.0...
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Page 13: Economizer Hood Removal And Setup
SCREWS REMOVE HOOD PARTS CUT PLASTIC TIES (2) PLACES ECONOMIZER DUCT COVERS SHEET METAL FACE UP BASEPAN Fig. 12 — 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 14 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.
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Page 15: 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 16: Convenience Outlets
CONVENIENCE OUTLETS Units Without Disconnect Option (3 Phase WARNING Indoor Motor) (1 Phase Indoor Motor ELECTRICAL OPERATION HAZARD and 3 Phase Unit) Failure to follow this warning could result in personal injury or death. Units with convenience outlet circuits may use multiple dis- Disconnect Disconnect connects. - Page 17 Remove two slot fillers in the bottom of the cover to per- mit service tool cords to exit the cover. Check for full closing and latching. GFCI RECEPTACLE NOT INCLUDED COVER - WHILE-IN-USE WEATHERPROOF GASKET BASEPLATE FOR GFCI RECEPTACLE UNIT CONNECT PRIMARY TRANSFORMER...
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Page 18: Factory-Option Thru-Base Connections
THERMOSTAT Fig. 26 — Thru-Base Connection Fittings Select a Bryant-approved accessory thermostat. When electric UNITS WITHOUT THRU-BASE CONNECTIONS (ELEC- heat is installed in the 549J unit, the thermostat must be capable of energizing the G terminal (to energize the Indoor Fan Contactor) -
Page 19: 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 20 Fig. 30 — 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...
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Page 21: 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 22 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 23 Low Voltage Control Connections CONTROL AND POWER WIRING DIAGRAMS Run the low-voltage control leads from the heater module(s) — Figures 37-43 are typical control and power wiring diagrams. VIO and BRN (two of each if two modules are installed; identify for Module #1) —...
- Page 24 Fig. 37 — Electro-Mechanical Control Wiring: 549J*A07/D07 — 208/230v, 460v, 575v...
- Page 25 Fig. 38 — Electro-Mechanical Control Wiring: 549J*D07 Tier 2 (1) Compressor — 208/230v, 460v, 575v...
- Page 26 Fig. 39 — Electro-Mechanical Control Wiring: 549J*08/09 — 208/230v, 460v, 575v...
- Page 27 Fig. 40 — Electro-Mechanical Power Wiring: 549J*A07/D07 — 208/230v, 460v, 575v...
- Page 28 Fig. 41 — Electro-Mechanical Power Wiring: 549J*D07 Tier 2 (1) Compressor — 208/230v, 460v, 575v...
- Page 29 Fig. 42 — Electro-Mechanical Power Wiring: 549J*08/09 — 208/230v, 460v, 575v...
- Page 30 Fig. 43 — RTU Open System Control Wiring...
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Page 31: 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 • Transformer — 100 va maximum system input system, which includes a W7220 economizer module (controller) •... - Page 32 Economizer Module Wiring Details Table 6 — Economizer Module - Left Hand Terminal Blocks Use Fig. 45 and Tables 6 and 7 to locate the wiring terminals for the Economizer module. LABEL TYPE DESCRIPTION NOTE: The four terminal blocks are removable. Slide out each Top Left Terminal Block terminal block, wire it, and then slide it back into place.
- Page 33 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 34 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 35 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 36 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 37 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 38 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 39 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 40 Table 12 — Dry Bulb Operation, No Demand Controlled Ventilation (DCV) (CO Sensor) — 1 Speed Fan OUTSIDE AIR GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED 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 41 Table 15 — Enthalpy Operation, with Demand Controlled Ventilation (DCV) (CO Sensor) — 1 Speed Fan OUTSIDE AIR GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED ECONOMIZE? High 0-v/Off 0-v/Off VENTMIN Closed High 24-v/On 0-v/Off VENTMIN Closed High 24-v/On 24-v/On VENTMIN...
- Page 42 Table 18 — Enthalpy Operation, No Demand Controlled Ventilation (DCV) (CO Sensor) — 2 Speed Fan OUTSIDE AIR GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED ECONOMIZE? 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed High 24-v/On...
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Page 43: Troubleshooting
ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 49 — Single Enthalpy Curve Boundaries Checkout NOTE: For information about menu navigation and use of the keypad see Interface Overview on page 33. Inspect all wiring connections at the economizer module’s termi- nals, and verify compliance with the installation wiring diagrams. -
Page 44: 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 45 STEP 1 STEP 2 STEP 3 Fig. 51 — Completing Installation of Return Air Smoke Sensor Fig. 52 — EconoMi$er IV Wiring...
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Page 46: Belt Force - Deflection Method
Step 14 — Check Belt Tension BLOWER PULLEY Measure the belt span length as shown in Fig. 53. 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 47 LPS/LOC Filter Drier Cooling Liquid Lines DFT 1 Acutrol Reversing Valve DFT 2 Comp 2 Reversing Valve Indoor Coil Comp 1 Outdoor Coil Accuater Heating Mode Liquid Lines (7.5 ton units only) Accuater Strainer (7.5 ton units only) Fig. 55 — Typical Unit Piping Schematic (549J08,09 Shown) Table 21 —...
- Page 50 Copyright 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549006-01 Edition Date: 2/19 Printed in U.S.A. Form No: II549J-7-9-05 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: II549J-7-9-04...
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Page 51: Preliminary Information
START-UP CHECKLIST FOR 549J07-09 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 52 Economizer minimum vent and changeover settings to job requirements (if equipped) (Y/N) _____ Verify smoke detector unit shutdown by utilizing magnet test (Y/N) _____ REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS Copyright 2019 Bryant Heating & Cooling Systems Cat. No. 04-53549006-01 Edition Date: 2/19 Printed in U.S.A.