Bryant Legacy 547K 04 Series

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53547014-01 Printed in U.S.A. Form II547K-4-7-03 Pg 1 12-22 Replaces: II547K-4-7-02

Installation Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1

MODEL NUMBER NOMENCLATURE AND

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . . . . . . 7

• ROOF MOUNT

Step 2 — Plan for Sequence of Unit Installation . . . . . . . . 7

• 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

• FOR UNITS WITH ACCESSORY ELECTRIC

HEATERS

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . 9

• POSITIONING ON CURB

Step 7 — Convert to Horizontal and Connect Ductwork

(when required) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . . . . . 11

• ECONOMIZER HOOD AND TWO-POSITION DAMPER

HOOD PACKAGE REMOVAL AND SETUP (FACTORY

OPTION)

• ECONOMIZER AND 2-POSITION HOOD

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 WITH FACTORY-INSTALLED NON-FUSED

DISCONNECT

• UNITS WITHOUT FACTORY-INSTALLED

NON-FUSED DISCONNECT

• ALL UNITS

• CONVENIENCE OUTLETS

• FACTORY OPTION THRU-BASE CONNECTIONS

• UNITS WITHOUT THRU-BASE CONNECTIONS

• FIELD CONTROL WIRING

• THERMOSTAT

• UNIT WITHOUT THRU-BASE CONNECTION KIT

• HEAT ANTICIPATOR SETTINGS

• COMMERCIAL DEFROST CONTROL

• ELECTRIC HEATERS

• SINGLE POINT BOXES AND SUPPLEMENTARY

FUSES

• SINGLE POINT BOXES WITHOUT FUSES

• LOW-VOLTAGE CONTROL CONNECTIONS

• CONTROL AND POWER WIRING DIAGRAMS

EconoMi$er

X (Factory Option) . . . . . . . . . . . . . . . . . . . 28

• SYSTEM COMPONENTS

• SPECIFICATIONS

•INPUTS

•OUTPUTS

• ENVIRONMENTAL

• ECONOMIZER MODULE WIRING DETAILS

• S-BUS SENSOR WIRING

•CO

SENSOR WIRING

• INTERFACE OVERVIEW

• SETUP AND CONFIGURATION

• ENTHALPY SETTINGS

• TWO-SPEED FAN OPERATION

• CHECKOUT

• TROUBLESHOOTING

RTU Open Controller (Factory Option) . . . . . . . . . . . . . 42

Controller Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

• LOW AMBIENT

Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

• COMPLETING RETURN AIR SMOKE SENSOR

INSTALLATION

• ADDITIONAL APPLICATION DATA

Step 12 — Adjust Factory-Installed Options . . . . . . . . . . 42

• SMOKE DETECTORS

• ECONOMI$ER IV OCCUPANCY SWITCH

Step 13 — Install Accessories . . . . . . . . . . . . . . . . . . . . . . 42

Step 14 — Fan Speed Set Up . . . . . . . . . . . . . . . . . . . . . . . 44

• UNITS WITH ELECTROMECHANICAL CONTROLS

Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,

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 U.S.A., 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

Legacy

™

Line

547K*04-07

Single Package Rooftop Heat Pump

with Puron

(R-410A) Refrigerant

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Do you have a question about the Bryant Legacy 547K 04 Series and is the answer not in the manual?

This document provides installation instructions for the Legacy™ Line 547K*04-07 Single Package Rooftop Heat Pump with Puron (R-410A) Refrigerant.

Function Description

The 547K*04-07 is a packaged rooftop heat pump designed for commercial applications. It uses Puron (R-410A) refrigerant and is available in various cooling capacities (3 to 6 tons) and electrical configurations. The unit can be configured for vertical or horizontal duct connections and supports various accessories such as economizers, electric heaters, and smoke detectors. The unit's operation is managed by either electromechanical controls or an optional RTU Open Controller for building management systems.

Important Technical Specifications

Refrigerant: Puron (R-410A)
Cooling Capacities: 3 tons (04), 4 tons (05), 5 tons (06), 6 tons (07)
Voltages: 460-3-60 (E), 208/230-1-60 (J), 208/230-3-60 (P), 575-3-60 (T)
Efficiency: 13.4 SEER2 (3-5 ton), 14.3 SEER (3-5 ton), 15.0 IEER (6 tons)
Rated Indoor Airflow (cfm): 1200 (04), 1500 (05), 2000 (06), 2400 (07)
Operating Weights (Base Unit): 467 lbs (04), 473 lbs (05), 584 lbs (06), 589 lbs (07)
Ductwork Clearance (from unit basepan): Supply ductwork cross-sectional dimensions must be equal to or greater than the unit supply duct opening dimensions for the first 18 in. (458 mm) of duct length.
Condensate Drain: 3/4 in. NPT connection. An external trap at least 4 in. (102 mm) deep is required.
Electrical Grounding: Unit cabinet must have an uninterrupted, unbroken electrical ground.
Power Wiring: Maximum wire size is No. 2 AWG (copper only). Field-supplied wiring must conform to minimum 63°F (33°C) rise.
Voltage Imbalance: On 3-phase units, voltages between phases must be balanced within 2% and current within 10%.
EconoMi$er® X (Factory Option):
- Rated Voltage: 20 to 30 vac RMS, 50/60 Hz
- Transformer: 100 va maximum system input
- Nominal Power Consumption: 11.5 VA (at 24 vac, 60 Hz) without sensors or actuators
- Relay Digital Output Rating: 1.5A run (30 vac max), 3.5A inrush at 0.45PF (200,000 cycles) or 7.5A inrush at 0.45PF (100,000 cycles)
- External Sensors Power Output: 21 vdc ± 5% at 48mA
- Temperature Range (Sensors): -40 to 150°F (-40 to 66°C) for dry bulb, -40 to 150°F (-40 to 65°C) for humidity
- Humidity Range (Sensors): 0 to 100% RH with 5% accuracy
- Actuator Signal: 2 to 10 vdc; minimum actuator impedance is 2k ohm
- Operating Temperature (Controller): -40 to 150°F (-40 to 65°C)

Usage Features

Installation Flexibility: Can be installed on a roof curb, pad, or frame. Units can be converted from vertical to horizontal duct configuration in the field.
Control Options: Available with electromechanical controls or an RTU Open Controller for advanced building management system integration.
Economizer Functionality: EconoMi$er X system provides expandable economizer control with an LCD and keypad for setup and monitoring. Supports single or differential enthalpy control, CO2 sensors for Demand Controlled Ventilation (DCV), and various temperature/humidity sensors.
Defrost Control: The Defrost Control Board (DFB) coordinates thermostat demands, cooling/heating stages, and defrost control. Defrost mode is time/temperature sequenced, with adjustable continuous run periods (30, 60, 90, or 120 minutes).
Fan Speed Control: For electromechanical units, fan speed is set via controls on the Unit Control Board (UCB) using a VDC calculator based on CFM and ESP requirements.
Convenience Outlets: Two types are offered: non-powered (field-installed 125V 15A circuit) and unit-powered (transformer-stepped down 115V from main power supply). Both feature a GFCI duplex receptacle with a weatherproof cover.
Thru-Base Connections (Factory Option): Provides bulkhead connectors for high and low voltage wiring to pass through the unit basepan, simplifying conduit routing.

Maintenance Features

Access Panels: Features tool-less filter access panel, indoor coil access panel, compressor access panel, and control box access panel for easy maintenance.
Hinged Panels: Some units may have hinged compressor doors for improved service access.
Troubleshooting: The EconoMi$er X module provides alarm messages on its LCD display for various system faults (e.g., sensor errors, actuator errors, freeze alarms, shutdown active). Alarms can be cleared from the display once the cause is resolved.
Pre-Start and Start-Up Checklist: A comprehensive checklist is provided to ensure proper installation and initial operation, covering checks for packaging removal, electrical connections, ground integrity, airflow obstructions, unit level, compressor rotation, and thermostat installation.
Service Manual: Refers to a separate Service Manual for detailed pre-start and start-up instructions, available on HVAC Partners.