Page 1: Table Of Contents
Legacy Line 549J*12 Single Package Rooftop Heat Pump with Puron (R-410A) Refrigerant ® Installation Instructions CONTENTS EconoMi$er® X (Factory Option) ....27 • SYSTEM COMPONENTS SAFETY CONSIDERATIONS .
Page 2: Model Number Nomenclature And Dimensions
Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety- WARNING alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. PERSONAL INJURY AND ENVIRONMENTAL WARNING signifies hazards which could result in personal HAZARD injury or death.
Page 3 Position: 10 11 12 13 14 15 16 17 Example: Unit Type Packaging & 2-Speed Indoor Fan Motor 549 - High Efficiency A = Standard Packaging, electro-mechanical Packaged Heat Pump controls that require W7212 EconoMi$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 — Size 12 Units...
Page 5 Fig. 2 — Unit Dimensional Drawing — Size 12 Units (cont)
Page 6: Refrigeration System Components
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: Refrigerant System Pressure Access Ports
LPS/LOC Filter Drier Cooling Liquid Lines DFT 1 Acutrol Acutrol Reversing Valve DFT 2 Comp 2 Reversing Valve Indoor Coil Comp 1 Outdoor Coil Heating Mode Liquid Lines Strainer Fig. 4 — Typical Unit Piping Schematic SEAT CORE (Part No. EC39EZ067) 1/2-20 UNF RH 0.596 45°...
Page 8: Step 1 - Plan For Unit Location
Step 1 — Plan for Unit Location 4. Convert unit to side duct connection arrangement. 5. Install field-fabricated ductwork at unit duct openings. Select a location for the unit and its support system (curb or 6. Install outdoor air hood. other) that provides for the minimum clearances required for 7.
Page 9 Fig. 6 — Roof Curb Details...
Page 10: Step 5 - Field Fabricate Ductwork
UNITS WITH ACCESSORY ELECTRIC HEATERS All installations require a minimum clearance to combustible surfaces of 1-in. (25 mm) from duct for first 12-in. (305 mm) away from unit. Step 6 — Rig and Place Unit Keep unit upright and do not drop. Spreader bars are required. Rollers may be used to move unit across a roof.
Page 11: Positioning On Curb
POSITIONING ON CURB REMOVABLE HORIZONTAL For full perimeter curbs CRRFCURB072A00 and 073A00, the RETURN DUCT OPENING COVER clearance between the roof curb and the front and rear base rails should be in. (6.4 mm). The clearance between the curb and the end base rails should be in.
Page 12: Step 8 - Install Outside Air Hood
Step 8 — Install Outside Air Hood 1. To gain access to the hood, remove the filter access panel. (See Fig. 13.) ECONOMIZER HOOD REMOVAL AND SETUP (FAC- 2. Locate the (2) screws holding the metal tray to the basepan TORY OPTION) and remove.
Page 13: Step 9 - Install External Condensate Trap And Line
Step 9 — Install External Condensate Trap and Line 2. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Be careful not to lift the The unit has one -in. condensate drain connection on the end panel too far as it might fall out.
Page 14: Step 10 - Make Electrical Connections
Step 10 — Make Electrical Connections WARNING ELECTRIC SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC;...
Page 15: All Units
unit connection points. Make field power connections directly to line connection pressure lugs only. See Fig. 27. WARNING FIRE HAZARD Failure to follow this warning could result in personal inju- ry, death, or property damage. Do not connect aluminum wire between disconnect switch and unit.
Page 16: Units Without Factory-Installed Non-Fused Disconnect
11. Engaging the shaft into the handle socket, re-install (3) components. Such operation would invalidate any applicable hex screws on the NFD enclosure. Bryant warranty. 12. Re-install the unit front panel. NOTE: Check all factory and field electrical connections for tightness.
Page 17 PWD-CO FUSE SWITCH PWD-CO TRANSFORMER CONVENIENCE OUTLET GFCI UNIT CONNECT PRIMARY TRANSFORMER DISCONNECT VOLTAGE CONNECTIONS TERMINALS ACCESS PANEL L1: RED + YEL H1 + H3 208, 230 Fig. 30 — Convenience Outlet Location L2: BLU + GRA H2 + H4 L1: RED Unit-Powered Convenience Outlet Splice BLU + YEL...
Page 18: Factory-Option Thru-Base Connections
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 GASKET an O function to control the reversing valve operation. If using an electronic thermostat, configure it for “non-heat pump”...
Page 19: Commercial Defrost Control
Typical Central Thermostat Terminal Connections Board (Note 2) O/B/Y2 (Note 1) SWITCHES NOTES: 1. Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2. Do not configure for O output. 2. W2 connection not required on units without electric heating. Field Wiring SPEED-UP Fig.
Page 20 Fig. 36 — Defrost Control Board Location Table 6 — 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 21: Unit Without Thru-Base Connection Kit
Shorting the jumpers for a period of 5 to 20 seconds bypasses 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 controlling DFT opens or the 10 minute defrost cycle limit is reached.
Page 22: Control And Power Wiring Diagrams
SINGLE HEATER MANUAL RESET POINT BOX COVERS LIMIT SWITCH DISCONNECT MOUNTING LOCATION SINGLE POINT HEATER HEATER HEATER MODULE MODULE MOUNTING MOUNTING (LOCATION 1) (LOCATION 2) BRACKET SCREW Fig. 39 — Typical Component Location Single Point Boxes Heater and Supplementary Fuses When heaters are installed, power wiring to both heaters and When the unit MOCP device value exceeds 60-A, unit-mount- the rest of the unit is connected via the single point box acces-...
Page 23 NOTE: Optional Outdoor Temperature Control at One Heater Stage – Move either heater wire to this terminal and connect outdoor temperature switch between second and third terminals. Fig. 41 — Accessory Electric Heater Control Connections...
Page 24 Fig. 42 — Typical 549J Control Wiring Diagram...
Page 25 Fig. 43 — Typical 549J Power Wiring Diagram (208/230-3-60 unit shown)
Page 26 Fig. 44 — RTU Open Controller System Wiring Diagram...
Page 27: Economi$Er® X (Factory Option)
EconoMi$er X (Factory Option) ® User Interface The interface provides status for normal operation, setup pa- The EconoMi$er X system is an expandable economizer con- rameters, checkout tests, and alarm and error conditions with a trol system, which includes a W7220 economizer module (con- 2-line 16 character LCD display and four button keypad.
Page 28: Economizer Module Wiring Details
Storage Temperature Table 9 — Economizer Module - Right 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 Right Terminal Blocks Relative Humidity AUX2 I 24 VAC IN The first terminal is not used.
Page 29: Co2 Sensor Wiring
• Press the ▼ (Down arrow) button to move to the next Table 10 — HH57AC081 Sensor Wiring Terminations menu. • Press the (Enter) button to display the first item in the TERMINAL currently displayed menu. TYPE DESCRIPTION NUMBER LABEL •...
Page 30: Setup And Configuration
SETUP AND CONFIGURATION IMPORTANT: Table 12 illustrates the complete hierar- Before being placed into service, the W7220 Economizer mod- chy. Your menu parameters may be different depending ule must be set up and configured for the installed system. on your configuration. For example if you do not have a DCV (CO ) sensor, then IMPORTANT: During setup, the economizer module is...
Page 31 Table 12 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † SPACE/RETURN AIR CO Displays value of measured CO from CO sensor. Invalid if not IN CO2 _ _ _ ppm 0 to 2000 ppm connected, short or out of range.
Page 32 Table 12 — 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 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 low. Set 35°F to 65°F DA LO ALM 45°F (7°C) lower range of alarm, below this temperature the alarm will show (2°C to 18°C);...
Page 34 Table 12 — 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 35 Table 14 — 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 36 Table 17 — 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 37 Table 20 — 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...
Page 38: Enthalpy Settings
ENTHALPY SETTINGS When the OA temperature, enthalpy and dew point are below WARNING the respective setpoints, the Outdoor Air can be used for econ- omizing. Figure 50 shows the new single enthalpy boundaries ELECTRIC SHOCK HAZARD in the W7220. There are 5 boundaries (setpoints ES1 through Failure to follow this warning could result in personal inju- ES5), which are defined by dry bulb temperature, enthalpy and ry, property damage, or death.
Page 39: Troubleshooting
TROUBLESHOOTING COMPLETING RETURN AIR SMOKE SENSOR INSTALLATION Alarms 1. Unscrew the two screws holding the return air smoke The economizer module provides alarm messages that display detector assembly. See Fig. 52, Step 1. Save the screws. on the 2-line LCD. 2.
Page 40: 2-Speed Indoor Fan Motor System With Variable
2-Speed Indoor Fan Motor System with Variable If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Frequency Drive (Factory-Installed Option) Unoccupied sequence) at terminals marked OCCUPANCY. For details on operating 549J 2-stage cooling units equipped Cut jumper JMP 2 to complete the installation.
Page 41: Step 13 - Check Belt Tension
Step 13 — Check Belt Tension BLOWER PULLEY Measure the belt span length as shown in Fig. 54. 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 42 Form No: II549J-12-03 © 2020 Carrier Cat. No. 04-53549013-01 Edition Date: 6-2020 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: II549J-12-02...
Page 43: Start-Up Checklist For 549J12 Single Package Rooftop Heat
START-UP CHECKLIST FOR 549J12 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 44 HEATING CYCLE ELECTRICAL Supply Voltage L1-L2_____________ L2-L3_____________ L3-L1_____________ Compressor Amps 1 L1 _____________ L2 _____________ L3 _____________ Compressor Amps 2 L1 _____________ L2 _____________ L3 _____________ Supply Fan Amps L1 _____________ L2 _____________ L3 _____________ TEMPERATURES Outdoor-air Temperature _____________ °F DB (Dry Bulb) Return-air Temperature _____________ °F DB _____________ °F Wb (Wet Bulb)

Bryant Legacy 549J 12 Series Installation Instructions Manual

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