Bryant 549J Series User manual

549J

SINGLE PACKAGE ROOFTOP

HEAT PUMP

SIZES 07 -- 09 with PURONR(R--410A) REFRIGERANT

Installation Instructions

NOTE: Read the entire instruction manual before starting

the installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 2....................

Rated Indoor Airflow (cfm) 3.....................

REFRIGERATION SYSTEM COMPONENTS 8.......

INSTALLATION 10..............................

Jobsite Survey 10...............................

Step 1 -- Plan for Unit Location 10.................

Roof Mount 10..............................

Step 2 -- Plan for Sequence of Unit Installation 10.....

Curb--Mounted Installation 10..................

Pad--Mounted Installation 10...................

Frame--Mounted Installation 10.................

Step 3 -- Inspect Unit 10..........................

Step 4 -- Provide Unit Support 10..................

Roof Curb Mount 10.........................

Slab Mount (Horizontal Units Only) 12..........

Alternate Unit Support

(In Lieu of Curb or Slab Mount) 12.............

Step 5 -- Field Fabricate Ductwork 12...............

For Units with Accessory Electric Heaters 12.....

Step 6 -- Rig and Place Unit 12....................

Positioning on Curb 13.......................

Step 7 -- Convert to Horizontal and Connect

Ductwork 13...........................

Step 8 -- Install Outside Air Hood 14...............

Economizer and Two Position Damper Hood

Package Removal and Setup — Factory Option 14..

Economizer Hood and Two--Position Hood 14.....

Step 9 -- Install External Condensate Trap

and Line 15............................

Step 10 -- Make Electrical Connections 15...........

Field Power Supply 15........................

Units with Factory--Installed

Non--Fused Disconnect 16.....................

Units Without Factory--Installed

Non--Fused Disconnect 17.....................

All Units 17................................

Convenience Outlets 17.......................

Factory Option Thru--Base Connections 18.......

Units Without Thru--Base Connections 19........

All Units 19................................

Field Control Wiring 19.......................

Thermostat 19...............................

Central Terminal Board 20......................

Commercial Defrost Control 20..................

Unit Without Thru--Base Connection Kit 22.......

Heat Anticipator Settings 22...................

Electric Heaters 22............................

Single Point Boxes & Supplementary Fuses 23....

Single Point Boxes without Fuses 23............

Low--Voltage Control Connections 23............

Variable Frequency Drive (VFD) 2--Speed

Indoor Fan Motor System (Factory--Installed) 23....

EconoMi$erRX (Factory--Installed Option) 24......

Product Description 24........................

System Components 24.......................

Specifications 24..............................

W7220 Economizer Module 24.................

Electrical 24................................

Inputs 24...................................

Outputs 25.................................

Environmental 25............................

Economizer Module Wiring Details 25...........

S--Bus Sensor Wiring 25......................

CO2Sensor Wiring 26........................

Interface Overview 26..........................

User Interface 26............................

Keypad 26.................................

Menu Structure 27.............................

Setup and Configuration 27.....................

Time--out and Screensaver 27..................

Sequence of Operation 33.......................

Enthalpy Settings 36...........................

Two--Speed Fan Operation 36....................

Checkout 37.................................

Power Up 37................................

Initial Menu Display 37.......................

Power Loss (Outage or Brownout) 38............

Status 38...................................

Checkout Tests 38...........................

Troubleshooting 38............................

Alarms 38..................................

Clearing Alarms 38..........................

2--Speed Indoor Fan Control System with Variable

Frequency Drive (Factory--Installed Option) 38.......

RTU Open Controller System 39.................

Supply Air Temperature (SAT) Sensor 41.........

Outdoor Air Temperature (OAT) Sensor 41.......

EconoMi$erR242...........................

Field Connections 42..........................

Space Temperature (SPT) Sensors 42............

Indoor Air Quality (CO2)Sensor 43.............

Outdoor Air Quality Sensor 44.................

Space Relative Humidity Sensor or Humidistat 44..

Smoke Detector/Fire Shutdown (FSD) 44.........

Connecting Discrete Inputs 44..................

Communication Wiring -- Protocols 45............

General 45.................................

Local Access 46.............................

RTU Open Controller Troubleshooting 46........

Outdoor Air Enthalpy Control 47.................

Differential Enthalpy Control 47................

Return Air Enthalpy Sensor 47.................

Smoke Detectors 48...........................

Additional Application Data 48.................

Step 11 -- Adjust Factory--Installed Options 48........

Step 12 -- Install Accessories 49...................

Step 13 -- Check Belt Tension 49...................

UNIT START--UP CHECKLIST 51..................

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 USA, 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 and in instructions or manuals, be alert to the

potential for personal injury.

Understand the signal words DANGER, WARNING,

CAUTION, and NOTE. These words are used with the

safety--alert symbol. DANGER identifies the most serious

hazards which will result in severe personal injury or

death. WARNING signifies hazards which could result in

personal injury or death. CAUTION is used to identify

unsafe practices, which may result in minor personal

injury or product and property damage. NOTE is used to

highlight suggestions which will result in enhanced

installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal

injury or death.

Before performing service or maintenance operations

on unit, always turn off main power switch to unit and

install lockout tag. Unit may have more than one

power switch.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

injury, death and/or equipment damage.

Puronr(R--410A) refrigerant systems operate at

higher pressures than standard R--22 systems. Do not

use R--22 service equipment or components on Puron

refrigerant equipment.

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Wear safety glasses and gloves when handling

refrigerants. Keep torches and other ignition sources

away from refrigerants and oils.

!WARNING

CUT HAZARD

Failure to follow this caution may result in personal

injury.

Sheet metal parts may have sharp edges or burrs. Use

care and wear appropriate protective clothing, safety

glasses and gloves when handling parts and servicing

heat pump units.

CAUTION

!Rated Indoor Airflow (cfm)

The table to the right lists the rated indoor airflow used

for the AHRI efficiency rating for the units covered in this

document.

Model Number Full Load Airflow (cfm)

549J*07A 2400

549J*07D 2400

549J*08D 3000

549J*09D 3400

Model

J - Puron

(R-410A) Refrigerant

Unit Type

549 - High Efficiency

Packaged Heat Pump

with optional electric heat

Packaging & 2-Speed Indoor Fan Motor

A = Standard Packaging, electro-mechanical

controls that require W7212 EconoMi$er

B = LTL Packaging, electro-mechanical controls

that require W7212 EconoMi$er IV

C = Standard Packaging, electro-mechanical

controls that require W7220 EconoMi$er X

D = Standard Packaging and 2 speed indoor

fan motor

E = LTL Packaging and 2 speed indoor fan motor

F = LTL Packaging, electro-mechanical controls

that require W7220 EconoMi$er X

Cooling Tons

07 - 6 tons

08 - 7.5 tons

09 - 8.5 tons

Heat Level

(Field installed electric heaters available)

000 = No Heat

Indoor Fan Options

1 = Standard Static Option

2 = Medium Static Option

3 = High Static/ Option

Refrig. System/Gas Heat Options

A = One-Stage cooling models

D = Two-Stage cooling models

Coil Options (Outdoor - Indoor - Hail Guard)

A = Al/Cu - Al/Cu

B = Precoat Al/Cu - Al/Cu

C = E-coat Al/Cu - Al/Cu

D = E-coat Al/Cu - E-coat Al/Cu

E = Cu/Cu - Al/Cu

F = Cu/Cu - Cu/Cu

M = Al/Cu -Al/Cu — Louvered Hail Guard

N = Precoat Al/Cu - Al/Cu — Louvered Hail Guard

P = E-coat Al/Cu - Al/Cu — Louvered Hail Guard

Q = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail Guard

R = Cu/Cu - Al/Cu — Louvered Hail Guard

S = Cu/Cu - Cu/Cu — Louvered Hail Guard

Voltage

E = 460-3-60

P = 208/230-3-60

T = 575-3-60

Example:

Position:

549JP08D000A1B0AA

123456789

10 11 12 13 14 15 16 17

Factory Installed Options

0A = None

NOTE: See the 549J Price Pages for a complete

list of factory installed options.

Outdoor Air Options

A = None

B = Temperature Economizer, Barometric Relief,

Standard Leak (W7212 or W7220)

E = Temperature Economizer, Barometric Relief,

Standard Leak w/CO

, (W7212 or W7220)

H =

Enthalpy

Economizer, Barometric Relief,

Standard Leak, (W7212 or W7220)

L =

Enthalpy

Economizer,Barometric Relief,

Standard Leak w/CO

, (W7212 or W7220)

Q = Motorized 2 Position Damper

U = Temperature

Economizer,

Barometric

Relief,

Ultra Low Leak, (W7220)

W =

Enthalpy

Economizer, Barometric Relief,

Ultra Low Leak, (W7220)

a549J---007

Fig. 1 -- 549J 07--09 Model Number Nomenclature (Example)

C160144

Fig. 2 -- Unit Dimensional Drawing: 07 — 08 Size Units

C160145

Fig. 2 -- Unit Dimensional Drawing: 07 — 08 Size Units (cont.)

C10757A

Fig. 3 -- Unit Dimensional Drawing: 09 Size Units

C10758A

Fig. 3 -- Unit Dimensional Drawing: 09 Size Unit (cont.)

C11247

LOCATION DIMENSION CONDITION

48--- in. (1219 mm)

18--- in. (457 mm)

18--- in. (457) mm

12--- in. (305 mm)

Unit disconnect is mounted on panel

No disconnect, convenience outlet option

Recommended service clearance

Minimum clearance

42--- in. (1067 mm)

36--- in. (914 mm)

Special

Surface behind servicer is grounded (e.g., metal, masonry wall)

Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)

Check sources of flue products within 10---ft of unit fresh air intake hood

C36--- in. (914 mm)

18--- in. (457 mm)

Side condensate drain is used

Minimum clearance

D42--- in. (1067 mm)

36--- in. (914 mm)

Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)

Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)

NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application

planning overhead obstruction or for vertical clearances.

Fig. 4 -- Service Clearance Dimensional Drawing

REFRIGERATION SYSTEM

COMPONENTS

Each heat pump refrigeration system includes a

compressor, accumulator, reversing valve, dual--function

outdoor coil with vapor header check valve, cooling liquid

line with a filter drier and a check valve, dual--function

indoor coil with a vapor header check valve, and heating

liquid line with check a valve and a strainer. Size 07 units

have a single compressor--circuit; unit sizes 08 through 09

have two compressor--circuits. See Fig. 5 for typical unit

piping schematic (unit size 09 (4--row indoor coil) with

two compressor--circuits is shown).

Dual--function outdoor and indoor coils are designed to

provide parallel coil circuits during evaporator--function

operation and converging coil circuits during the

condenser--function operation.

Reversing Valve and Check Valve Position

See Fig. 5 (on page 9) and Tables 1, 2, and 3.

Troubleshooting Refrigerant Pressure Problems and

Check Valves

Refer to Fig. 5 and the Cooling Mode and Heating Mode

tables (Tables 1 and 2).

Refrigerant System Pressure Access Ports

There are two access ports in each circuit -- on the suction

tube and the discharge tube near the compressor. These are

brass fittings with black plastic caps. The hose connection

fittings are standard 1/4--in. SAE male flare couplings.

The brass fittings are two--piece High Flow valves, with a

receptacle base brazed to the tubing and an integral

spring--closed check valve core screwed into the base. See

Fig. 6 on page 9. This check valve is permanently

assembled into this core body and cannot be serviced

separately. Replace the entire core body if necessary.

Service tools are available from RCD that allow the

replacement of the check valve core without having to

recover the entire system refrigerant charge. Apply

compressor refrigerant oil to the check valve core’s

bottom O--ring. Install the fitting body and torque to

96 10 in--lbs (10.9 1 Nm). Do not exceed 106 in--lbs

(11.9 Nm) when tightening.

Table 1 – Cooling Mode (each circuit)

Component Status/Position

Reversing Valve Energized

Check Valve A Closed

Check Valve B Open

Check Valve C Closed

Check Valve D Open

Table 2 – Heating Mode (each circuit)

Component Status/Position

Reversing Valve De---energized

Check Valve A Open

Check Valve B Closed

Check Valve C Open

Check Valve D Closed

Table 3 – Defrost Mode

Component Status/Position

Defrost Thermostat Closed

Outdoor Fan(s) Off

Reversing Valve Energized

Check Valve A Closed

Check Valve B Open

Check Valve C Closed

Check Valve D Open

COMPRESSOR

ACCUMULATOR

HPS

COMPRESSOR

ACCUMULATOR

HPS

Filter

Drier 2B

LPS/LOC

Acutrol DFT 1

Cooling Liquid Lines

DFT 2

Outdoor Coil

Indoor Coil

Comp 2

Comp 1

1C Strainer

Heating Mode Liquid Lines

Acutrol

Reversing

Valve

Reversing

Valve

C09228

Fig. 5 -- Typical Unit Piping Schematic (with TXV valves on Indoor Coils)

5/8” HEX 0.47

30°

0.596

1/2-20 UNF RH

1/2” HEX

45°

WASHER

O-RING

7/16-20 UNF RH

DEPRESSOR PER AHRI 720

+.01/-.035

FROM FACE OF BODY

This surface provides a metal to metal seal when

torqued into the seat. Appropriate handling is

required to not scratch or dent the surface.

SEAT CORE

(Part No. EC39EZ067)

a548J---009

Fig. 6 -- CoreMax* Access Port Assembly

* CoreMax is a registered trademark of Fastest, Inc.

INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes and the NEC (National

Electrical Code) ANSI/NFPA 70 for special installa-

tion requirements.

2. Determine unit location (from project plans) or select

unit location.

3. Check for possible overhead obstructions which may

interfere with unit lifting or rigging.

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (curb

or other) that provides for the minimum clearances

required for safety. This includes the clearance to

combustible surfaces, unit performance and service access

below, around and above unit as specified in unit

drawings. See Fig. 4.

NOTE: Consider also the effect of adjacent units.

Unit may be installed directly on wood flooring or on Class

A, B, or C roof--covering material when roof curb is used.

Do not install unit in an indoor location. Do not locate air

inlets near exhaust vents or other sources of contaminated

air.

Although unit is weatherproof, avoid locations that permit

water from higher level runoff and overhangs to fall onto

the unit.

Select a unit mounting system that provides adequate

height to allow for removal and disposal of frost and ice

that will form during the heating--defrost mode as well as

allow installation of condensate trap per requirements.

RefertoStep9—InstallExternalCondensate Trap and

Line – for required trap dimensions.

Roof Mount —

Check building codes for weight distribution

requirements. Unit operating weight is shown in Table 4.

Table 4 – Operating Weights

549J* UNITS LB (KG)

07 08 09

Base Unit 710 (322) 875 (397) 1020 (463)

Economizer

Vertical 80 (36) 80 (36) 80 (36)

Horizontal 105 (48) 105 (48) 105 (48)

Powered Outlet 32 (15) 32 (15) 32 (15)

Curb

14--- in. / 356mm 110 (50) 110 (50) 110 (50)

24--- in. / 610mm 145 (66) 145 (66) 145 (66)

Step 2 — Plan for Sequence of Unit Installation

The support method used for this unit will dictate different

sequences for the steps of unit installation. For example,

on curb--mounted units, some accessories must be

installed on the unit before the unit is placed on the curb.

Review the following for recommended sequences for

installation steps.

Curb--Mounted Installation —

Install curb

Install field--fabricated ductwork inside curb

Install accessory thru--base service connection package

(affects curb and unit) (refer to accessory installation

instructions for details)

Prepare bottom condensate drain connection to suit

planned condensate line routing (refer to Step 9 for

details)

Rig and place unit

Install outdoor air hood

Install condensate line trap and piping

Make electrical connections

Install other accessories

Pad--Mounted Installation —

Prepare pad and unit supports

Check and tighten the bottom condensate drain

connection plug

Rig and place unit

Convert unit to side duct connection arrangement

Install field--fabricated ductwork at unit duct openings

Install outdoor air hood

Install condensate line trap and piping

Make electrical connections

Install other accessories

Frame--Mounted Installation —

Frame--mounted applications generally follow the

sequence for a curb installation. Adapt as required to

suit specific installation plan.

Step 3 — Inspect unit

Inspect unit for transportation damage. File any claim

with transportation agency.

Confirm before installation of unit that voltage, amperage

and circuit protection requirements listed on unit data

plate agree with power supply provided.

On units with hinged panel option, check to be sure all

latches are snug and in closed position.

Locate the carton containing the outside air hood parts;

see Fig. 12 (on page 14). Do not remove carton until unit

has been rigged and located in final position.

Step 4 — Provide Unit Support

Roof Curb Mount —

Accessory roof curb details and dimensions are shown in

Fig. 7. Assemble and install accessory roof curb in

accordance with instructions shipped with the curb.

NOTE: The gasketing of the unit to the roof curb is

critical for a watertight seal. Install gasket supplied with

the roof curb as shown in Fig. 7. Improperly applied

gasket can also result in air leaks and poor unit

performance.

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