Page 1: Table Of Contents
551J SINGLE PACKAGE ROOFTOP COOLING ONLY SIZES 07, 08, 09, 11 AND 12 WITH PURON (R- -410A) REFRIGERANT Installation Instructions NOTE: Read the entire instruction manual before starting Field Control Wiring ..... . . the installation.
Page 2: Safety Considerations
Checkout Tests ......Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the Troubleshooting .
Page 3: Rated Indoor Airflow (Cfm)
Model Number Full Load Airflow (cfm) Rated Indoor Airflow (cfm) 551J*07A/G 2400 The table to the right lists the rated indoor airflow used 551J*07D/K 2400 for the AHRI efficiency rating for the units covered in this 551J*08D/K 3000 document. 551J*09D/K 3000 551J*11D/K 3000...
Page 4 C160142 Fig. 2 - - Dimensional Drawing — Sizes 07- - 09...
Page 5 C160143 Fig. 2 - - Unit Dimensional Drawing — Sizes 07- - 09 (cont.)
Page 6 C13302A Fig. 3 - - Dimensional Drawing — Sizes 11 and 12...
Page 7 C13303A Fig. 3 - - Unit Dimensional Drawing — Sizes 11 and 12 (cont.)
Page 8: Installation
C08337 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: Curb- - Mounted Installation
Table 1 – Operating Weights UNITS LB (KG) 551J 11/12 Base Unit 715 (324) 860 (390) 860 (390) 1025 (466) Economizer Vertical 75 (34) 75 (34) 75 (34) 75 (34) Horizontal 122 (55) 122 (55) 122 (55) 122 (55) Powered Outlet 35 (16) 35 (16) 35 (16)
Page 10 C13311 Fig. 6 - - Roof Curb Details — Sizes 07- - 12...
Page 11: Alternate Unit Support (In Lieu Of Curb Or Slab Mount)
Alternate Unit Support WARNING (In Lieu of Curb or Slab Mount) — A non- - combustible sleeper rail can be used in the unit curb PERSONAL INJURY HAZARD support area. If sleeper rails cannot be used, support the long Failure to follow this warning could cause personal sides of the unit with a minimum of 3 equally spaced 4- - in.
Page 12: Positioning On Curb
C06005 DIMENSIONS MAX WEIGHT UNIT 551J*07 1130 88.0 2235 43.0 1090 41.5 1055 551J*08 1340 88.0 2235 43.0 1090 49.5 1255 551J*09 1340 88.0 2235 43.0 1090 49.5 1255 551J*11/12 1580 88.0 2235 31.5 49.5 1255 NOTES: 1. Dimensions in ( ) are in millimeters. 2.
Page 13: 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 14: 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˝ (25 mm) PER past the open filter clips. Close the filter clips to lock BASE RAIL 10´...
Page 15: Units With Factory- - Installed Non- - Fused Disconnect
Refer to Fig. 23 for power transformer connections and the Units Without Disconnect Option discussion on connecting the convenience outlet on page 17. Equip Field power wires are connected to the unit at line- - side GR Lug pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement),...
Page 16: Units Without Factory- - Installed
Units Without Factory- - Installed Non- - Fused Disconnect — When installing units, provide a disconnect switch per NEC (National Electrical Code) of adequate size. Disconnect sizing data is provided on the unit informative plate. Locate on unit cabinet or within sight of the unit per national or local codes.
Page 17: Convenience Outlets
Such operation would invalidate Remove the blank cover plate at the convenience outlet; any applicable Bryant warranty. discard the blank cover. Loosen the two screws at the GFCI duplex outlet, until NOTE: Check all factory and field electrical connections approximately -in.
Page 18: Factory Option Thru- - Base Connections
Thermostat — Using unit- - mounted convenience outlets: Units with Select a Bryant- - approved accessory thermostat. When unit- - mounted convenience outlet circuits will often electric heat is installed in the 551J unit, the thermostat require that two disconnects be opened to de- - energize all must be capable of energizing the G terminal (to energize power to the unit.
Page 19: Central Terminal Board
different colors with minimum of seven leads. If the RACEWAY thermostat does not require a 24- - v source (no “C” connection required), use a thermostat cable or equivalent with minimum of six leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.
Page 20: Single Point Boxes And Supplementary Fuses
Single Point Boxes and Supplementary Fuses — DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH LOCATION When the unit MOCP device value exceeds 60- - A, HEATER COVERS unit- - mounted supplementary fuses are required for each heater circuit.
Page 21: Low- - Voltage Control Connections
Low- - Voltage Control Connections — Perfect Humidityt System Control Connections Pull the low- - voltage control leads from the heater Perfect Humidity – Space RH Controller — module(s) - - VIO and BRN (two of each if two modules are installed;...
Page 22 C160116 Fig. 32 - - Typical Perfect Humidityt Dehumidification System Humidistat Wiring Programable Thermostat Unit CTB THERMOSTAT O/W2/B SRTN Perfect Humidity™ FIOP *Connection not required. C12743 Fig. 33 - - Typical Rooftop Unit with Perfect Humidity Dehumidification System with a Programmable Thermostat...
Page 23: 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 24: Outputs
Outputs — Table 3 – 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 25: Co 2 Sensor Wiring
for the power supplies are common. See Fig. 37 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. 37 - - Wiring for CO Sensor Interface Overview S-Bus...
Page 26: 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 27 Table 7 - - 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 28 Table 7 - - 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 29 Table 7 - - 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 30 Table 7 - - 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 31 Table 7 - - 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 32: Sequence Of Operation
Table 8 – 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 33 Table 11 – 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 34 Table 13 – 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 35: Enthalpy Settings
Table 15 – 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 36: Checkout
ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE a50--- 9997 Fig. 39 - - Single Enthalpy Curve and Boundaries Table 17 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units) Point P1 Point P2 Enthalpy Temp.
Page 37: 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 38: 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 39 a551J--- 006 Fig. 41 - - RTU Open Controller Wiring Diagram...
Page 40 a551J--- 007 Fig. 42 - - Typical RTU Open Controller Wiring Diagram Wiring Diagram with Perfect Humidityt System...
Page 41: Supply Air Temperature (Sat) Sensor
Refer to the input configuration and accessory sections of the Factory Installed Option RTU Open 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 system.
Page 42: Economi$Er R 2
Connect T- - 56: See Fig. 46 for T- - 56 internal connections. Install a jumper between SEN and SET terminals as SPT sensors available from Bryant are resistive input illustrated. Connect T- - 56 terminals to the RTU Open non-communicating (T55, T56, and T59) sensors.
Page 43: Indoor Air Quality (Co 2) Sensor
Connect T- - 59: The T- - 59 space sensor requires a To controller separate, isolated power supply of 24 VAC. See Fig. 48 for internal connections at the T- - 59. Connect the SEN terminal (BLU) to the RTU Open controller at J20- - 1. Connect the COM terminal (BRN) to J20- - 2.
Page 44: Space Humidity Sensor Or Humidistat
Space Humidity Sensor or Humidistat — Perfect Humidityt System Control Wiring: In units equipped with the Perfect Humidity system option there are two loose wires loose in the control box (one PNK and one PNK/BLK) used to control the dehumidification function of the unit.
Page 45: Smoke Detector/Fire Shutdown (Fsd)
J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-)4 to 20 mA Current Loop Output to RTU Open Relative Humidity Sensor (Polarized Male Connector) SPAN ZERO 4-20 GND 0-5V 0-10V C12756 Fig. 54 - - Duct Relative Humidity Sensor Typical Wiring Humidistat: Use of a field- - supplied humidistat provides Fan Status: The fan status accessory is a field- - installed the RTU Open controller insight to the relative humidity...
Page 46: Communication Wiring - - Protocols
Protocols do not change the function of Contact your Bryant applications engineer for more a controller; just make the front end user different. detailed information on protocols, third party wiring, and networking.
Page 47: Local Access
NOTE: Refer to the RTU Open Multi- - Protocol Controller Controls, Start- - Up, Operation and Troubleshooting manual for complete configuration of RTU Open controller operating sequences and troubleshooting information. Contact your Bryant applications engineer for details on configuration and troubleshooting of connected networks. Access Port...
Page 48: Outdoor Air Enthalpy Control
Table 19 – 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 49: Smoke Detectors
To wire the return air enthalpy sensor, perform the Return Air following: Smoke Detector (as shipped) 1. Use a 2- - conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the en- thalpy controller. 2.
Page 50: Step 11 - Adjust Factory- -Installed Options
Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper C160123 Fig. 63 - - EconoMi$er IV Wiring Step 11 — Adjust Factory- -Installed Options Thermostat / sensors EconoMi$er2 (without control/for external signal and Smoke Detectors — integrated barometric relief) Smoke detector(s) will be connected at the Controls EconoMi$er2 (without control/for external signal) Connections...
Page 51: Step 13 - Check Belt Tension
Step 13 — Check Belt Tension 2. Set the tension gauge to the desired tension (see Table 1 in Fig. 64). Place the large O- - ring at that point. Measure the belt span length as shown in Fig. 64. 3.
Page 52 BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR MOUNTING MOTOR MOUNTING BOLTS (4) PLATE C11504 Fig. 65 - - Belt Drive Motor Mounting — 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 54 Catalog No: II551J---7---12---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. Replaces: II551J--- 7--- 12--- 03...
Page 55: Start- - Up Checklist
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 56 10. RESTORE SETPOINTS FOR THERMOSTAT AND HUMIDISTAT REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS Catalog No: II551J---7---12---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.

This manual is also suitable for:

551j*08d/k series 551j series 551j*07d/k series 551j*12d/k series 551j*11d/k series 551j*09d/k series

Bryant 551J*07A/G Series Installation Instructions Manual

Theinstallation.

Safety Considerations

Installation

Electric Heaters

Low Ambient Control (Factory Option)

Variable Frequency Drive (VFD) 2- - Speed Indoor Fan Motor System (Factory- - Installed)

Perfect Humidityt System Control Connections

Economi$Er R X (Factory- -Installed Option)

Specifications

Interface Overview

Menu Structure

Setup and Configuration

Sequence of Operation

Enthalpy Settings

Two- -Speed Fan Operation

Checkout

Economi$Er R 2

Quick Links

TABLE OF CONTENTS

Troubleshooting

Related Manuals for Bryant 551J*07A/G Series

Summary of Contents for Bryant 551J*07A/G Series

This manual is also suitable for:

Table of Contents