Bryant Legacy 547K 14 Installation Instructions Manual
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Bryant Legacy 547K 14 Installation Instructions Manual

Single package roof top heat pump
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Le gac y™ L in e 547K *1 4
S ing l e P acka ge R o oft op Heat P u m p
wi th P ur on® ( R-4 1 0A ) Ref rig era n t
and Axi on™ Fan Te c hnol o gy
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . . . . 7
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 8 - Install Outside Air Hood . . . . . . . . . . . . . . . . . . 10
Step 10 - Make Electrical Connections . . . . . . . . . . . . . 11
• FACTORY-OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• COMMERCIAL DEFROST CONTROL
• ELECTRIC HEATERS
• SINGLE POINT BOXES AND SUPPLEMENTARY
FUSES
• SINGLE POINT BOXES WITHOUT FUSES
• LOW-VOLTAGE CONTROL CONNECTIONS
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No.: 04-53547013-01
Installation Instructions
Page
Printed in U.S.A.
Form No.: II547K-14-01
EconoMi$er X (Factory-Installed Option) . . . . . . . . . . . . 24
Step 12 - Install Accessories . . . . . . . . . . . . . . . . . . . . . . 37
Step 13 - Fan Speed Set Up . . . . . . . . . . . . . . . . . . . . . . . 37
Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions
of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit, and other safety precautions that may apply.
Pg 1
6-22
Replaces: New

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Summary of Contents for Bryant Legacy 547K 14

  • Page 1: Table Of Contents

    Le gac y™ L in e 547K *1 4 S ing l e P acka ge R o oft op Heat P u m p wi th P ur on® ( R-4 1 0A ) Ref rig era n t and Axi on™...

  • Page 2: Model Number Nomenclature And

    Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire WARNING extinguisher available for all brazing operations. It is important to recognize safety information. This is the PERSONAL INJURY AND ENVIRONMENTAL safety-alert symbol .
  • Page 3 Position: 9 10 11 12 13 14 15 16 17 Example: Packaging and Control Unit Type A = Standard Packaging, electro-mechanical Packaged Rooftop Heat Pump controls, no intake or exhaust option. Will with Field-Installed Electric Heat allow for use of field-installed economizers (W7212, W7220), manual damper, or 2-position damper.
  • Page 4 Fig. 2 — 547K*14 Unit Dimensional Drawing...
  • Page 5 Fig. 2 — 547K*14 Unit Dimensional Drawing (cont)

  • Page 6: Installation

    DIMENSION LOCATION CONDITION in. (mm) 48 (1219) Unit disconnect is mounted on panel. 18 (457) No disconnect, convenience outlet option. 18 (457) Recommended service clearance. 12 (305) Minimum clearance. 42 (1067) Surface behind servicer is grounded (e.g., metal, masonry wall). 36 (914) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass).

  • Page 7: Step 2 - Plan For Sequence Of Unit Installation

    Step 2 — Plan for Sequence of Unit in Fig. 5. Improperly applied gasket can also result in air leaks and poor unit performance. Installation Install insulation, cant strips, roofing felt, and counter flashing as The support method used for this unit will dictate different shown.
  • Page 8 Fig. 5 — 547K*14 Roof Curb Details...

  • Page 9: Step 6 - Rig And Place Unit

    Place All Gasket in Place Before Placing Unit on Roof Curb. (914-1371) “B” 36”-54” “C” Detail “A” Duct End “A” “A” See Detail “A” DIMENSIONS MAX WEIGHT UNIT 547K*14 1901 116.0 2945 57.0 1450 59.5 1510 NOTES: 1. Dimensions in () are in millimeters. 2.

  • Page 10: Step 7 - Convert To Horizontal And Connect

    Step 7 — Convert to Horizontal and Connect Unit is shipped in the vertical duct configuration. Unit without factory-installed economizer or return air smoke detector op- tion may be field-converted to horizontal ducted configuration using accessory CRDUCTCV002A00. To convert to horizontal configuration, remove screws from side duct opening covers Remove and remove covers.

  • Page 11: Step 9 - Install External Condensate Trap And Line

    To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 1/2 in. square socket drive extension) and install it in the side drain Side connection. Panel The piping for the condensate drain and external trap can be completed after the unit is in place.
  • Page 12 Field Power Supply For those units without through-the-curb power, conduit must be used to route the main power from the condenser end, via the power entry in the corner post of the unit (see Fig. 16-18) to ei- ther the factory option disconnect or the bottom of the control box.

  • Page 13: Field Wiring

    Such operation would invalidate any ap- Disconnect factory test leads; discard. plicable Bryant warranty. Fig. 22 — Power Wiring Connections TEST LEADS - Unit may be equipped with short leads (pig-...

  • Page 14: Units Without Factory-Installed Non-Fused Disconnect

    To field install the NFD shaft and handle (see Fig. 24): Remove the unit front panel (see Fig. 2). Remove (3) hex screws on the NFD enclosure — (2) on the face of the cover and (1) on the left side cover. Remove the front cover of the NFD enclosure.
  • Page 15 Non-Powered Type Requires the field installation of a general-purpose 125-v 15-A circuit powered from a source elsewhere in the building. Ob- Pwd-CO Fuse serve national and local codes when selecting wire size, fuse or Switch breaker requirements and disconnect switch size and location. Route 125-v power supply conductors into the bottom of the utility box containing the duplex receptacle.

  • Page 16: All Units

    This device can be a thermostat (field-supplied) or a thermostat emulation device provided as part of a third-party Building Management System. Thermostat Install a Bryant-approved accessory 2-stage Cooling/Heating ther- 1.5” Electrical mostat according to installation instructions included with the Bulkhead accessory.
  • Page 17 COMMERCIAL DEFROST CONTROL Typical On 547K units equipped with electromechanical controls the Unit Control Thermostat Defrost Control Board (DFB) coordinates thermostat demands Board Connections for supply fan control, 2 stage cooling, 2 stage heating, emergency heating and defrost control with unit operating se- quences.
  • Page 18 Fig. 34 — Defrost Control Board Location — 547K*14 Electromechanical Unit Shown Table 3 — 547K 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...
  • Page 19 Shorting the jumpers for a period of 5 to 20 seconds bypasses specific size unit. Refer to the label on the unit cabinet for the the remaining continuous run period and places the unit in a list of approved heaters. Forced Defrost mode.

  • Page 20: Control And Power Wiring Diagrams

    SINGLE POINT BOXES AND SUPPLEMENTARY FUSES When the unit MOCP device value exceeds 60-A, unit- mounted supplementary fuses are required for each heater cir- cuit. These fuses are included in accessory single point boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section.
  • Page 21 Fig. 41 — Typical Control Wiring Diagram, Electromechanical with W7220 Controller...
  • Page 22 Fig. 42 — Typical Power Wiring Diagram — 208/230, 460-3-60 Unit Shown...
  • Page 23 Fig. 43 — Typical Power Wiring Diagram — 575-3-60 Unit Shown...

  • Page 24: Economi$Er X (Factory-Installed Option)

    EconoMi$er X (Factory-Installed Option) sensor, Mixed Air sensor, and an Outdoor Dry Bulb sensor. En- thalpy and other options are available with bus sensors. PRODUCT DESCRIPTION User Interface The EconoMi$er X system is an expandable economizer con- ® Provides status for normal operation, setup parameters, check- trol system, which includes a W7220 economizer module (con- out tests, and alarm and error conditions with a 2-line 16 char- troller) with an LCD and keypad (see Fig.

  • Page 25: Environmental

    ENVIRONMENTAL Table 5 — Economizer Module — Left Hand Terminal Blocks Operating Temperature: –40°F to 150°F (–40°C to 65°C) LABEL TYPE DESCRIPTION Exception of display operation down to –4°F (–20°C) with full Top Left Terminal Block recovery at –4°F (–20°C) from exposure to –40°F (–40°C) 20k NTC Mixed Air Temperature Sensor (Polarity and COM...

  • Page 26: Co2 Sensor Wiring

    Sensor (Hot) Black Yellow Analog Brown – Orange Green Switch Power Supply. Provide Disconnect Label Means and Overload Protection As Required. Fig. 47 — CO Sensor Wiring INTERFACE OVERVIEW Switches This section describes how to use the EconoMi$er X user in- ®...

  • Page 27: Menu Structure

    To use the keypad when working with Set Points, System and IMPORTANT: Table 9 illustrates the complete hierarchy. Your Advanced Settings, Checkout tests and Alarms: menu parameters may be different depending on your configu- Navigate to the desired menu. ration. Press the (Enter) button to display the first item in the For example, if you do not have a DCV (CO...
  • Page 28 Table 9 — W7220 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 29 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT MECH COOL ON Displays stage of mechanical cooling that is active. 0, 1, or 2 HEAT STAGES ON Displays the stage of heat pump heating that is active. STATUS SUPPLY FAN SPEED (cont)
  • Page 30 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT 0°F to 50°F ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR ERV OAT SP 32°F (–18°C to 10°C); TEMPERATURE SETPOINT increment by 1°F Only displayed when AUX1 O = ERV Exhaust fan set point for single speed units.
  • Page 31 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT COOLING STAGE 3 DELAY 0 min, 5 min, Delay after stage 2 cool has been active. Turns on second stage of 15 min, then cooling when economizer is first stage and mechanical cooling is STG3 DLY 2.0h...
  • Page 32 Table 9 — W7220 Menu Structure (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES VALUE INCREMENT DISCHARGE AIR S-BUS SENSOR ERROR DA SYLK T ERR Discharge air sensor has failed or become disconnected - check wiring then replace sensor if the alarm continues. OUTSIDE AIR TEMPERATURE SENSOR ERROR OA SENS T ERR Outdoor air temperature sensor has failed or become disconnected...

  • Page 33: Standard Or Single Speed Fan Operation

    STANDARD OR SINGLE SPEED FAN OPERATION The W (heating mode) is not controlled by the W7220 but it re- quires the status to know where to position the OA damper for FAN TYPE = 1 SPEED is not used on 547K*14 units. minimum position for the fan speed.

  • Page 34: 2Sp H/C (2 Speed Heat/Cool) Speed Fan Operation

    2SP H/C (2 SPEED HEAT/COOL) SPEED FAN OPERATION Refer to Table 12 for ENTH CURVE set point values. The W7220 calculates the enthalpy and dew point using the FAN TYPE = 2SP H/C is not used on 547K*14 units OA temperature and humidity input from the OA enthalpy sen- sor.

  • Page 35: Checkout

    CHECKOUT TROUBLESHOOTING Inspect all wiring connections at the economizer module’s ter- Alarms minals, and verify compliance with the installation wiring dia- The economizer module provides alarm messages that display grams. on the 2-line LCD. For checkout, review the Status of each configured parameter NOTE: Upon power up, the module waits 60 minutes before and perform the Checkout tests.

  • Page 36: Additional Application Data

    ADDITIONAL APPLICATION DATA Refer to the application data sheet titled “Factory-Installed Smoke Detector, for Small and Medium Rooftop Units 2 to 25 Tons” for discussions on additional control features of these smoke detectors including multiple unit coordination. Return Air Smoke Detector (As Shipped) Fig.

  • Page 37: Step 11 - Adjust Factory-Installed Options

    Step 11 — Adjust Factory-Installed Options NOTE: The Fan Speed Set Up labels are located on the High Volt- age cover in the Control Box. SMOKE DETECTORS Connect a multimeter to the Vdc terminals on the UCB. Smoke detector(s) will be connected at the Unit Control Board Set the Range Switch to either A, B, or C per the Switch (UCB), at terminals marked “Smoke Shutdown.”...
  • Page 38 ESP in. wg Factory Setting: Calculator 9.0 V 3000 Field Setting: 3250 Record field setting here 3500 3750 4000 Switch Range: 4250 4500 4.1 - 7.5 4750 10.0 6.9 - 8.7 5000 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range designed for maximum field adjustment potential.

  • Page 39: Typical Unit Piping

    Typical Unit Piping Table 14 — 547K*14 – Heating Mode 547K*14 heat pump systems include 2 compressors, a revers- COMPONENT STATUS/POSITION ing valve, dual-function outdoor and indoor coils, a common Reversing Valve De-energized liquid line with bi-flow TXV, and dedicated cooling and heat- Check Valve A Open ing TXVs.

  • Page 40: Pre-Start And Start-Up

    Filter Drier LPS/LOC Heating TXV Reversing Valve Indoor Coil Outdoor Coil Fig. 55 — Piping Schematic — 547K*14 Heating Mode Pre-Start and Start-Up This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre-Start and Start-Up instructions.
  • Page 42 Printed in U.S.A. Form No.: II547K-14-01 © 2022 Carrier Cat. No. 04-53547013-01 Edition Date: 6-22 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: New...

  • Page 43: Start-Up Checklist

    START-UP CHECKLIST 547K*14 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 preceding sections of this Installation Instruction document.
  • Page 44 PRESSURES Refrigerant Suction ____________ PSIG Refrigerant Discharge ____________ PSIG Verify Refrigerant Charge using Charging Charts (Y/N) _____ 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) _____ Printed in U.S.A.

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