Page 1: Table Of Contents
549J SINGLE PACKAGE ROOFTOP HEAT PUMP SIZES 07 - - 09 with PURON (R- -410A) REFRIGERANT Installation Instructions NOTE: Read the entire instruction manual before starting Factory Option Thru- - Base Connections ..the installation. Units Without Thru- - Base Connections .
Page 2: Safety Considerations
Power Loss (Outage or Brownout) ... . the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, Status ........National Electrical Code (NEC);...
Page 3: Rated Indoor Airflow (Cfm)
Rated Indoor Airflow (cfm) CAUTION The table to the right lists the rated indoor airflow used CUT HAZARD for the AHRI efficiency rating for the units covered in this document. Failure to follow this caution may result in personal injury. Model Number Full Load Airflow (cfm) Sheet metal parts may have sharp edges or burrs.
Page 4 C160144 Fig. 2 - - Unit Dimensional Drawing: 07 — 08 Size Units...
Page 5 C160145 Fig. 2 - - Unit Dimensional Drawing: 07 — 08 Size Units (cont.)
Page 6 C10757A Fig. 3 - - Unit Dimensional Drawing: 09 Size Units...
Page 7 C10758A Fig. 3 - - Unit Dimensional Drawing: 09 Size Unit (cont.)
Page 8: Refrigeration System Components
C11247 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 9 Table 2 – Heating Mode (each circuit) Table 3 – Defrost Mode Component Status/Position Component Status/Position Defrost Thermostat Closed Reversing Valve De--- energized Outdoor Fan(s) Check Valve A Open Reversing Valve Energized Check Valve B Closed Check Valve A Closed Check Valve C Open Check Valve B...
Page 10: Installation
INSTALLATION Review the following for recommended sequences for installation steps. Jobsite Survey Curb- - Mounted Installation — Complete the following checks before installation. Install curb 1. Consult local building codes and the NEC (National Install field- - fabricated ductwork inside curb Electrical Code) ANSI/NFPA 70 for special installa- Install accessory thru- - base service connection package tion requirements.
Page 11 C13311 Fig. 7 - - Roof Curb Details...
Page 12: Slab Mount (Horizontal Units Only)
Curb should be level. This is necessary for unit drain to If a plenum return is used on a vertical unit, the return function properly. Unit leveling tolerances are shown in should be ducted through the roof deck to comply with Fig.
Page 13: Positioning On Curb
PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB. “B” REQUIRED 914-1371 SPREADER (36"-54") DUCT END BARS “C” DETAIL “A” “A” SEE DETAIL “A” C10410 DIMENSIONS MAX WEIGHT UNIT 549J*07A/D 1100 88.0 2235 40.8 1035 41.5 1055 549J*08D 1315 88.0...
Page 14: Step 8 - Install Outside Air Hood
Step 8 — Install Outside Air Hood Economizer Hood and Two- - Position Hood — NOTE: If the power exhaust accessory is to be installed Economizer and Two Position Damper Hood on the unit, the hood shipped with the unit will not be Package Removal and Setup - - Factory Option used and must be discarded.
Page 15: Step 9 - Install External Condensate Trap And Line
5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position MINIMUM PITCH 1” (25mm) PER past the open filter clips. Close the filter clips to lock BASE RAIL 10’...
Page 16: Units With Factory- - Installed
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. ELECTRIC DISCONNECT SWITCH Field power wires are connected to the unit at line- - side COPPER pressure lugs on compressor contactor C and indoor fan WIRE ONLY...
Page 17: Units Without Factory- - Installed
10. Secure the handle to the painted cover with (2) screws Convenience Outlets — and lock washers supplied. WARNING 11. Engaging the shaft into the handle socket, re- - install (3) hex screws on the NFD enclosure. ELECTRICAL OPERATION HAZARD 12.
Page 18: Factory Option Thru- - Base Connections
Mount the weatherproof cover to the backing plate as shown in Fig. 23. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching. COVER – WHILE-IN-USE RECEPTACLE WEATHERPROOF NOT INCLUDED...
Page 19: Units Without Thru- - Base Connections
C13412 Fig. 26 - - Thru- - Base Connection Fittings Thermostat — Select a Bryant- - approved accessory thermostat. When Check tightness of connector lock nuts before connecting electric heat is installed in the 549J unit, the thermostat must electrical conduits.
Page 20: Central Terminal Board
For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire [35_C (95_F) minimum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire [35_C (95_F) minimum]. For over 75 ft. (23 m), use no.
Page 21 Table 5 – 549J Defrost Board I/O and Jumper Configurations Inputs Point Name Type of I/O Connection Pin Number Unit Connection Note G Fan DI, 24Vac P2--- 3 CTB--- G Y1 Cool 1 DI, 24Vac P2--- 5 CTB--- Y1 Y2 Cool 2 DI, 24Vac P2--- 4 CTB--- Y2...
Page 22: Unit Without Thru- - Base Connection Kit
Unit without thru- - base connection kit — DISCONNECT MOUNTING LOCATION Pass the thermostat control wires through the hole provided in the corner post; then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the upper- - left corner of the Central Terminal Board (CTB).
Page 23: Single Point Boxes & Supplementary Fuses
Table 7 – Heater Model Number Bare Heater Model Number Heater Sales Package P/N Includes: Bare Heater Carton and packing materials Installation sheet Single Point Boxes and Supplementary Fuses — Low- - Voltage Control Connections — When the unit MOCP device value exceeds 60- - A, Run the low- - voltage control leads from the heater unit- - mounted supplementary fuses are required for each module(s) - - VIO and BRN (two of each if two modules...
Page 24: Economi$Er R X (Factory- -Installed Option)
EconoMi$er X (Factory- -Installed Option) Specifications W7220 Economizer Module — The module is designed for use with 2 to 10 Vdc or bus communicating actuator. The module includes terminals for CO sensor, mixed air sensor, and an outdoor dry bulb sensor.
Page 25: Outputs
Outputs — Table 8 – Economizer Module - - Left Hand Terminal Blocks Actuator signal: 2- - 10 Vdc; minimum actuator impedance is 2k ohm; bus two- - wire output for bus communicating Label Type Description actuators. Top Left Terminal Block Exhaust fan, Y1, Y2 and AUX1 O: 20k NTC Supply Air Temperature Sensor...
Page 26: Co 2 Sensor Wiring
for the power supplies are common. See Fig. 40 for CO sensor wiring. SENSOR (HOT) BLACK YELLOW ANALOG BROWN – Switch ORANGE Label GREEN POWER SUPPLY. PROVIDE DISCONNECT Switches MEANS AND OVERLOAD PROTECTION AS REQUIRED. C14158 Fig. 40 - - Wiring for CO Sensor Interface Overview S-Bus...
Page 27: Menu Structure
To use the keypad when working with menus: S SYSTEM SETUP S Press the (Up arrow) button to move to the previous S ADVANCED SETUP menu. S CHECKOUT S Press the (Down arrow) button to move to the next S ALARMS menu.
Page 28 Table 12 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS COOL Y1 ---IN ON/OFF FIRST STAGE COOLING DEMAND (Y1---IN) (cont) Y1---I signal from space thermostat or unitary controller for Cooling Stage 1. = 24 Vac on terminal Y1---I OFF = 0 Vac on terminal Y1---I COOL Y1 ---OUT...
Page 29 Table 12 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SETPOINTS MAT SET 53_F 38 to 70_F; SUPPLY AIR SETPOINT (12_C) (3 to 21_C) Setpoint determines where the economizer will modulate the OA damper to increment by 1 maintain the mixed air temperature.
Page 30 Table 12 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SYSTEM INSTALL 01/01/10 Display order = MM/DD/YY SETUP Setting order = DD, MM, then YY . UNITS DEG _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.
Page 31 Table 12 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ADVANCED MAT T CAL 0.0_F +/ ---2.5_F SUPPLY AIR TEMPERATURE CALIBRATION SETUP (or C) (+/ ---1.4_C) Allows for the operator to adjust for an out of calibration supply air (cont) temperature (SAT) sensor OAS T CAL...
Page 32 Table 12 - - Menu Structure* (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ALARMS(#) Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using S---Bus sensors, “SYLK”...
Page 33: Sequence Of Operation
Table 13 – Damper Minimum Position Settings and Readings on Checkout Menu Demand Controlled Ventilation Fan Speed Setpoints Checkout Sensor) MIN POS VMAX ---HS MIN POS H VMAX ---HS MIN POS L VMAX ---LS VENT MIN VMIN ---HS VENT MAX VMAX ---HS VENT MIN H VMIN ---HS...
Page 34 Table 16 – Enthalpy Operation No DCV (CO Sensor) - - 1 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed...
Page 35 Table 18 – Dry Bulb Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed...
Page 36: Enthalpy Settings
Table 20 – Enthalpy Operation No DCV (CO Sensor) - - 2 Speed Fan Demand Outside Air --- Controlled Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied Ventilation economize? (DCV) 0-v/Off 0-v/Off MIN POS L Closed 24-v/On 0-v/Off MIN POS L Closed High...
Page 37: Checkout
ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE a50--- 9997 Fig. 42 - - Single Enthalpy Curve and Boundaries Table 22 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units) Point P1 Point P2 Enthalpy Temp.
Page 38: Power Loss (Outage Or Brownout)
Power Loss (Outage or Brownout) — Troubleshooting All setpoints and advanced settings are restored* after any Alarms — power loss or interruption. The economizer module provides alarm messages that * All settings are stored in non--- volatile flash memory. display on the 2- - line LCD. Status —...
Page 39: Rtu Open Controller System
NOTE: The RTU Open controller acts as an intelligent The RTU Open controller is an integrated component of the imbedded thermostat. A room thermostat cannot be used Bryant rooftop unit. Its internal application programming with the RTU Open controller. Board Power...
Page 40 a549J--- 001 Fig. 44 - - Typical RTU Open Controller Wiring Diagram...
Page 41: Supply Air Temperature (Sat) Sensor
Refer to the input configuration and accessory sections of the RTU Open Multi ---Protocol Controller Controls, Start ---Up, Operation and Troubleshooting manual for more detail. The RTU Open controller requires the use of a Bryant space sensor. A standard thermostat cannot be used with the RTU Open controller system.
Page 42: Economi$Er 2
Space Temperature (SPT) Sensors — Connect T- - 56: See Fig. 48 for T- - 56 internal connections. SPT sensors available from Bryant are resistive input Install a jumper between SEN and SET terminals as non-communicating (T55, T56, and T59) sensors. These illustrated.
Page 43: Indoor Air Quality (Co 2) Sensor
Connect T- - 59: The T- - 59 space sensor requires a Do not mount the IAQ sensor in drafty areas such as near separate, isolated power supply of 24 VAC. See Fig. 50 supply ducts, open windows, fans, or over heat sources. for internal connections at the T- - 59.
Page 44: Outdoor Air Quality Sensor
Outdoor Air Quality Sensor Space Relative Humidity Sensor or Humidistat — (P/N 33ZCSENCO2 plus weatherproof enclosure) — The Space Relative Humidity Sensor is not used with 549J The outdoor air CO sensor is designed to monitor carbon units at this time. dioxide (CO ) levels in the outside ventilation air and Smoke Detector/Fire Shutdown (FSD) —...
Page 45: Communication Wiring - - Protocols
Different protocols exist to provide different switch settings. kinds of information for different applications. In the BAS Contact your Bryant applications engineer for more application, many different protocols are used, depending detailed information on protocols, third party wiring, and on manufacturer.
Page 46: Local Access
Tech Tool Kit Contact your Bryant applications engineer for details on (USB-TKIT). This is a field Tech Tool to set-up, service, or configuration and troubleshooting of connected networks. Access Port...
Page 47: Outdoor Air Enthalpy Control
Table 24 – LEDs The LEDs on the RTU Open Controller show the status of certain functions If this LED is on... Status is... Power The RTU Open controller has power The RTU Open controller is receiving data from the network segment The RTU Open controller is transmitting data over the network segment The binary output is active The Run and Error LEDs indicate control module and network status...
Page 48: Smoke Detectors
Smoke Detectors Completing Installation of Return Air Smoke Sensor: 1. Unscrew the two screws holding the Return Air Smoke Detector assembly. See Fig. 62, Step 1. Save Smoke detectors are available as factory- - installed options on the screws. 549J models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in 2.
Page 49: Step 12 - Install Accessories
Unit Without Economizer Economizer 2 Position Damper or 2 Position Damper C160126 Fig. 63 - - EconoMi$er IV Wiring Step 12 — Install Accessories span length by 1/64. For example, if the belt span length is 32 inches: 32 x 1/64 = 1/2 inch deflection. Available accessories include: Belt Force - - Deflection Method - - Roof curb...
Page 50 C11504 Fig. 65 - - Belt Drive Motor Mounting Catalog No: II549J---7---9---04 Copyright 2018 Bryant Heating & Cooling Systems Edition Date: 01/18 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 51: Unit Start- - Up Checklist
UNIT START-UP CHECKLIST (Remove and Store in 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 judgement, follow safe practices, and adhere to the safety considerations/information as outlined in the preceding sections of this Installation Instructions document.
Page 52 VERIFY SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS Catalog No: II549J---7---9---04 Copyright 2018 Bryant Heating & Cooling Systems Edition Date: 01/18 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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Bryant 549J Series Installation Instructions Manual

Theinstallation.

Safety Considerations

Refrigeration System Components

Installation

Central Terminal Board

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Interface Overview

Menu Structure

Setup and Configuration

Sequence of Operation

Enthalpy Settings

Two- -Speed Fan Operation

Checkout

Unit Start- - up Checklist

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TABLE OF CONTENTS

Troubleshooting

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Table of Contents