Bryant 551J User Manual

551J

SINGLE PACKAGE ROOFTOP COOLING ONLY

SIZES 04 -- 06 with PURONR(R--410A) REFIRGERANT

Installation Instructions

NOTE: Read the entire instruction manual before starting

the installation

TABLE OF CONTENTS

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

INSTALLATION 5...............................

Step 1 -- Plan for Unit Location 5..................

Step 2 -- Plan for Sequence of Unit Installation 5......

Step 3 -- Inspect Unit 6...........................

Step 4 -- Provide Unit Support 6...................

Step 5 -- Field Fabricate Ductwork 8................

Step 6 -- Rig and Place Unit 8.....................

Step 7 -- Convert to Horizontal and Connect

Ductwork 9............................

Step 8 -- Install Outside Air Hood 9................

Step 9 -- Install External Condensate Trap

and Line 11............................

Step 10 -- Make Electrical Connections 11...........

Step 11 -- Adjust Factory--Installed Options 35........

Step 12 -- Install Accessories 36...................

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

unit and in instructions or manuals, be alert to the potential for personal injury.

. When you see this symbol on the

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.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, turn off main power switch to unit and install lockout tag. Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rating plate. Unit may have more than one power switch.

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.

Ware safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

551J

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.

CAUTION

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 equipment.

Vertical Connections / Economizer

551J

Horizontal Connections / Economizer

C10057

Fig. 1 -- Unit Dimensional Drawing

551J

C10058

Fig. 1 -- Unit Dimensional Drawing (cont.)

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 installation 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.

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 installation of condensate trap per requirements.RefertoStep9—InstallExternal Condensate Trap and Line – for required trap dimensions.

Roof mount —

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (curb or other) that provides for minimum clearances required for safety (including clearance to combustible surfaces), unit performance and service access below, around and above unit as specified in unit drawings. See Fig. 2.

18” (457)

42" (1067)

Required bottom condensate drain connection. Otherwise, 36” (914mm) for condensate connection.

Fig. 2 -- Service Clearance Dimensional Drawing

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.

18" (457)

C07459

Check building codes for weight distribution requirements. Unit operating weight is shown in Table 1.

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

551J

Table 1 – Operating Weights

551J UNITS LB (KG)

Component *04 *05 *06 Base Unit 458 (208) 545 (247) 550 (249) Economizer

Vertical 50 (23) 50 (23) 50 (23)

Horizontal 80 (36) 80 (36) 80 (36) Cu Fins 25 (11) 43 (20) 56 (25) Powered Outlet 32 (15) 32 (15) 32 (15) Curb

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

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

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.

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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.

Step 4 — Provide Unit Support

Roof Curb Mount —

Accessory roof curb details and dimensions are shown in Fig. 3. Assemble and install accessory roof curb in accordance with instructions shipped with the curb.

Curb should be level. This is necessary for unit drain to function properly. Unit leveling tolerances are show in Fig. 4. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb and

not to the unit. The accessory thru--the--base power and gas connection package must be installed before the unit is set on the roof curb.

If electric and control wiring is to be routed through the basepan, attach the accessory thru--the--base service connections to the basepan in accordance with the accessory installation instructions.

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. 3. Improperly applied gasket can also result in air leaks and poor unit performance.

Slab Mount (Horizontal Units Only) —

Provide a level concrete slab that extends a minimum of 6 in. (150 mm) beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if required.

Alternate Unit Support (In Lieu of Curb or Slab Mount) —

A non--combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 4--in. x 4--in. (102 mm x 102 mm) pads on each side.

CONNECTOR

PKG. ACCY.

CRBTMPWR003A01

CRBTMPWR004A01

1’-4”

/16”

1’-9

[551]

[406]

D ALT

DRAIN

HOLE

/4”

[44.5]

POWER CONTROL

/4” [19] NPT

/4” [31.7]

/2” [12.7]

NPT

ACCESSORY

POWER

/2” [12.7]

NPT

ROOF CURB

ACCESSORY

CRRFCURB001A01

CRRFCURB002A01

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

6. Service clearance: 4 ft on each side.

A UNIT SIZE

1’-2” [356]

551J*04-06

2’-0” [610]

7. Direction of airflow.

551J

C10059

Fig. 3 -- Roof Curb Details

For units with accessory electric heaters: Horizontal

applications require a minimum clearance to combustible surfaces of 1--in (25 mm) from duct for first 12--in (305 mm) away from unit. Vertical applications do not require a minimum clearance around ductwork.

Step 6 — Rig and Place Unit

MAXIMUM ALLOWABLE

DIFFERENCE IN. (MM)

A-B

0.5” (13)

B-C

1.0” (25)

Fig. 4 -- Unit Leveling Tolerances

Step 5 — Field Fabricate Ductwork

Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or

0.45 in. wg (112 Pa) without economizer.

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For vertical ducted applications, secure all ducts to roof curb and building structure on vertical ducted units. Do

not connect ductwork to unit.

Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

A-C

1.0” (25)

C06110

Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 5 for additional information.

Lifting holes are provided in base rails as shown in Fig. 5. Refer to rigging instructions on unit.

Before setting the unit onto the curb, recheck gasketing on curb.

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

All panels must be in place when rigging. Unit is not designed for handling by fork truck.

If using top crate as spreader bar, once unit is set, carefully lower wooden crate off building roof top to ground. Ensure that no people or obstructions are below prior to lowering the crate.

C06005

UNIT

551J*04A 700 318 74.5 1890 36.5 925 33.5 850 551J*05A 830 377 74.5 1890 36.5 925 41.5 1055 551J*06A 865 393 74.5 1890 36.0 915 41.5 1055

NOTES:

1. Dimensions in ( ) are in millimeters.

2. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit center of gravity. Use wooden top to prevent rigging straps from damaging unit.

MAX WEIGHT

LB KG IN MM IN MM IN MM

A B C

DIMENSIONS

Fig. 5 -- Rigging Details

PositioningonCurb—

Position unit on roof curb so that the following clearances are maintained:

/4in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit. This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately equal to Fig. 3, section C--C.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.

Step 8 — Install Outside Air Hood

The outdoor hood components are shipped in a box located in the unit return air compartment behind the outdoor--ar opening access panel (or economizer). Access is through the filter access panel. See Fig. 7.

FILTERACCESS PANEL

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

All panels must be in place when rigging. Unit is not designed for handling by fork truck.

After unit is in position, remove rigging skids and shipping materials.

Step 7 — Convert to Horizontal and Connect Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit without factory--installed economizer or return air smoke detector option may be field--converted to horizontal ducted configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation--side down. Seals around duct openings must be tight. See Fig. 6.

COMPRESSOR ACCESS PANEL

OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL

C06023

Fig. 7 -- Typical Access Panel Locations

1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed.

2. To remove the component box from its shipping position, remove the screw holding the hood box bracket to the top of the economizer. Slide the hood box out of the unit. See Fig. 8.

HOOD BOX BRACKET

551J

C06024

Fig. 8 -- Hood Box Removal

Motorized 2--Position Damper Hood —

1. Assemble outdoor--air hood top and side plates as shown in Fig. 9. Install seal strips on hood top and sides. Put aside screen retainer and screws for later

C06108

Fig. 6 -- Horizontal Conversion Panels

assembly.

2. Fasten hood top and side plate assembly to unit with screws provided. See Fig. 9.

Field--supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing

3. Slide outdoor--air inlet screen into screen track on hood side plates. While holding screen) in place, fasten screen retainer to hood using screws provided.

4. Replace filter access panel. See Fig. 7.

and mastic in accordance with applicable codes.

SEAL STRIP

HOOD TOP

SEAL STRIP

HOOD SIDE

HOOD TOP

SEAL STRIP

OUTDOOR AIR INLET SCREEN

OUTDOOR-AIR HOOD – UNASSEMBLED

HOOD SIDE

SCREEN RETAINER

HOOD SIDE

SCREEN TRACKS

TRACKS FOR AIR INLET SCREEN

SIDE PANEL

TOP SIDE PANEL

INDOOR COIL ACCESS PANEL

CAULK HERE

Fig. 10 -- Indoor Coil Access Panel Relocation

C06025

551J

HOOD SIDES AND TOP ASSEMBLED

Fig. 9 -- Outdoor--Air Hood Details

Economizer Hood — NOTE: If the power exhaust accessory is to be installed

on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

1. The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bottom of the indoor coil access panel. See Fig. 10.

2. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 11.

3. Remove the shipping tape holding the economizer barometric relief damper in place.

4. Insert the hood divider between the hood sides. See Fig. 11 and 12. Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

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 past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 12.

6. Caulk the ends of the joint between the unit top panel and the hood top.

7. Replace the filter access panel.

C07504

INDOOR COIL ACCESS PANEL

LEFT HOOD SIDE

19 1/16”

(483mm)

SCREW

HOOD DIVIDER

33 3/8”

(848mm)

Fig. 11 -- Economizer Hood Construction

DIVIDER

OUTSIDE AIR

HOOD

CLEANABLE

BAROMETRIC RELIEF

ALUMINUM FILTER

FILTER

Fig. 12 -- Economizer Filter Installation

TOP PANEL

FILTER CLIP

C06026

C06027

Step 9 — Install External Condensate Trap

and Line

The unit has one3/4-in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 13. Unit airflow configuration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.

CONDENSATE PAN (SIDE VIEW)

STANDARD SIDE DRAIN

DRAIN

PLUG

(FACTORY-INSTALLED)

Fig. 13 -- Condensate Drain Pan (Side View)

When using the standard side drain connection, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan plug can

be tightened with a

/2--in. square socket drive extension.

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a square socket drive extension) and install it in the side drain connection.

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 14.

MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE

TO ROOF DRAIN

BASE RAIL

OPEN VENT

2˝ (51) MIN

ALTERNATE BOTTOM DRAIN

C08021

/2-- i n .

SEE NOTE

Step 10 — Make Electrical Connections

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.

NOTE: Check all factory and field electrical connections for tightness. Field--supplied wiring shall conform with the limitations of 63_F(33_C) rise.

Field Power Supply —

If equipped with optional Powered Convenience Outlet: The power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads according to required operation of the convenience outlet. If an always--energized convenience outlet operation is desired, connect the source leads to the line side of the unit--mounted disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de--energize via unit disconnect switch operation of the convenience outlet is desired, connect the source leads to the load side of the 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.

Refer to Fig. 19 for power transformer connections and the discussion on connecting the convenience outlet on page 12.

551J

ROOF

DRAIN PLUG

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended.

CURB

Fig. 14 -- Condensate Drain Piping Details

C08022

Field power wires are connected to the unit at line--side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement) or at factory--installed option non--fused disconnect switch. Max wire size is #2 AWG (copper only). (See Fig. 15.)

NOTE: TEST LEADS -- Unit may be equipped with

All units must have an external trap for condensate drainage. Install a trap at least 4-in. (102 mm) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use a pipe size smaller than the unit connection

/4-in.).

(

short leads (pigtails) on the field line connection points on contactor C or optional disconnect switch. These leads are for factory run--test purposes only; remove and discard before connecting field power wires to unit connection points. Make field power connections directly to line connection pressure lugs only.

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Bryant 551J User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual