Bryant 551J Series 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 . 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.

2
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
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.
Ware 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
equipment.
CAUTION
!
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Horizontal Connections / Economizer
Vertical Connections / Economizer
C10057
Fig. 1 -- Unit Dimensional Drawing
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C10058
Fig. 1 -- Unit Dimensional Drawing (cont.)
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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 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)
18" (457)
42" (1067)
1
Required bottom condensate drain connection.
Otherwise, 36” (914mm) for condensate connection.
1
C07459
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.
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 —
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
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)
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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.
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.
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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.
7. Direction of airflow.
ROOF CURB
ACCESSORY A UNIT SIZE
CRRFCURB001A01 1’-2”
[356]
CRRFCURB002A01 2’-0”
[610]
551J*04-06
CONNECTOR
PKG. ACCY. BC
D ALT
DRAIN
HOLE
POWER CONTROL ACCESSORY
POWER
CRBTMPWR003A01 1’-9
11
/
16
”
[551]
1
3
/
4
”
[44.5]
1’-4”
[406]
CRBTMPWR004A01
3
/
4
” [19] NPT
1
1
/
4
” [31.7]
1
/
2
” [12.7]
NPT
1
/
2
” [12.7]
NPT
C10059
Fig. 3 -- Roof Curb Details
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A-B
0.5” (13)
B-C
1.0” (25)
A-C
1.0” (25)
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
C06110
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.
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.
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
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.
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.
CAUTION
!
C06005
UNIT MAX WEIGHT DIMENSIONS A B C
LB KG IN MM IN MM IN MM
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.
Fig. 5 -- Rigging Details
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PositioningonCurb—
Position unit on roof curb so that the following clearances
are maintained: 1/4in. (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.
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.
CAUTION
!
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.
C06108
Fig. 6 -- Horizontal Conversion Panels
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
and mastic in accordance with applicable codes.
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.
FILTER ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
COMPRESSOR
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 posi-
tion, 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.
HoodBox
HOOD BOX
BRACKET
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
assembly.
2. Fasten hood top and side plate assembly to unit with
screws provided. See Fig. 9.
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.
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SEAL STRIP
HOOD TOP
SEAL STRIP
HOOD
SIDE
SCREEN
RETAINER
HOOD SIDE
SCREEN
TRACKS
OUTDOOR AIR INLET SCREEN
SEAL STRIP
OUTDOOR-AIR HOOD – UNASSEMBLED
HOOD SIDES AND TOP ASSEMBLED
TRACKS FOR AIR
INLET SCREEN
HOOD
SIDE
HOOD TOP
C07504
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 bot-
tom 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 ba-
rometric 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.
SIDE
PANEL
INDOOR
COIL
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
CAULK
HERE
TOP
SIDE
PANEL
C06025
Fig. 10 -- Indoor Coil Access Panel Relocation
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
19 1/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
33 3/8”
(848mm)
(483mm)
C06026
Fig. 11 -- Economizer Hood Construction
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
C06027
Fig. 12 -- Economizer Filter Installation
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