Bryant Puron 551J-04A/G Series User manual

Installation Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . .1
MODEL NUMBER NOMENCLATURE AND
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . .2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Step 1 — Plan for Unit Location. . . . . . . . . . . . . . . . . . .6
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . . .7
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
SLAB MOUNT)
Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . . .9
• UNITS WITH ACCESSORY ELECTRIC HEATERS
Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . .9
• POSITIONING ON CURB
Step 7 — Convert to Horizontal and
Connect Ductwork (When Required) . . . . . . . . . . . . .10
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . .11
• ECONOMIZER AND TWO-POSITION DAMPER HOOD
PACKAGE REMOVAL AND SETUP (FACTORY
OPTION)
• ECONOMIZER AND TWO-POSITION HOOD
ASSEMBLY
Step 9 — Units with Hinged Panels Only . . . . . . . . .12
Step 10 — Install External Condensate Trap
and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Step 11 — Make Electrical Connections . . . . . . . . .13
• FIELD POWER SUPPLY
• UNITS WITH FACTORY-INSTALLED DISCONNECT
• UNITS WITHOUT FACTORY-INSTALLED
DISCONNECT
•ALLUNITS
• CONVENIENCE OUTLETS
• FACTORY-OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• UNITS WITHOUT THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• FIELD CONTROL WIRING
• THERMOSTAT
• HEAT ANTICIPATOR SETTINGS
• ELECTRIC HEATERS
•PERFECTHUMIDITY™CONTROL CONNECTIONS
• CONTROL AND POWER WIRING DIAGRAMS
• ECONOMI$ER®(FACTORY OPTION)
• SMOKE DETECTORS
• RTU OPEN CONTROLLER (FACTORY OPTION)
• CONTROLLER OPTIONS
Step 12 — Adjust Factory-Installed Options . . . . .40
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 13 — Install Accessories . . . . . . . . . . . . . . . . . . .40
Step 14 — Check Belt Tension. . . . . . . . . . . . . . . . . . .40
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . .40
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, mainte-
nance, 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 mod-
ifying 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 extin-
guisher available. Read these instructions thoroughly and follow
all warnings or cautions attached to the unit. Consult local build-
ing 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 in-
structions 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.
551J 04-06
Single Package Rooftop Cooling Only with
Puron®(R-410A) Refrigerant

2
MODEL NUMBER NOMENCLATURE AND
DIMENSIONS
See Fig. 1 for 551J model number nomenclature. See Fig. 2
for unit dimensional drawings. Figure 3 shows service clearance
dimensions.
Rated Indoor Airflow (cfm)
Table 1 lists the rated indoor airflow used for the AHRI effi-
ciency rating for the units covered in this document.
Table 1 — Rated Indoor Airflow
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 lock(s)
and lockout tag(s). 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.
Puron®(R-410A) refrigerant systems operate at higher
pressures than standard R-22 systems. Do not use R-22 ser-
vice equipment or components on Puron refrigerant equip-
ment.
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 refrig-
erants and oils.
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 air conditioning
equipment.
MODEL NUMBER RATED INDOOR AIRFLOW
(cfm)
551J*04A/G 1050
551J*05A/G 1400
551J*06A/G 1625

3
Fig. 1 — 551J*04-06 Model Number Nomenclature (Example)
Model
J - Puron®(R-410A) Refrigerant
Unit Type
551 - High Efficiency Cooling RTU
Packaging
A = Standard Packaging
B = LTL Packaging, electro mech.
controls that require W7212 EconoMi$er IV
C = Standard Packaging, electro mech.
controls that require W7212 EconoMi$er IV
F = LTL Packaging, electro mech.
controls that require W7220 EconoMi$er IV
Cooling Tons
04 - 3 tons
05 - 4 tons
06 - 5 tons
Heat Level
(Field installed electric heaters available)
000 = No Heat
Indoor Fan Options
1 = Standard Static - Belt Drive
2 = Medium Static - Belt Drive
3 = High Static - Belt Drive
Refrig. System/Gas Heat Options
A = Standard one stage cooling models
G = Standard one stage cooling models
and Perfect Humidity™
Coil Options (RTPF) (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
J = 208/230-1-60
P = 208/230-3-60
T = 575-3-60
Outdoor Air Options
A = None
B = Temperature Economizer w/ Barometric Relief,
Standard Leak (W7212 or W7220)
E = Temperature Economizer w/ Barometric Relief
and CO2 (W7212 or W7220)
H =
Enthalpy Economizer w/ Barometric Relief,
Standard Leak (W7212 or W7220)
L =
Enthalpy Economizer w/ Barometric Relief and CO2
(W7212 or W7220)
Q = Motorized 2-Position Damper
U = Temp Economizer w/Barometric Rellief, Ultra Low Leak
(W7220)
W = Enthalpy Economizer w/Barometric Rellief, Ultra Low Leak
(W7220)
Example:
Position:
551JE06A000A1B0A A
123456789
10 11 12 13 14 15 16
17
Factory Installed Options
0A = None
NOTE: See the 551J 3 to 12.5 ton Price Pages
for a complete list of factory installed
options.
NOTE: On single phase (-J voltage code) models, the
following are not available as factory installed options:
- Perfect HumidityTM
- Coated Coils or Cu Fin Coils
- Louvered Hail Guards
- Economizer or 2 Position Damper
- Powered 115 Volt Convenience Outlet

4
Fig. 2 — Dimensional Drawing
Horizontal Connections / Economizer
Vertical Connections / Economizer

5
Fig. 2 — Dimensional Drawing (cont.)

6
Fig. 3 — Service Clearance Dimensional Drawing
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. 3.
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 per-
mit water from higher level runoff and overhangs to fall
onto unit.
Select a unit mounting system that provides adequate
height to allow installation of condensate trap per require-
ments. Refer to Step 10 — Install External Condensate Trap
and Line on page 12 for required trap dimensions.
ROOF MOUNT
Check building codes for weight distribution require-
ments. Unit operating weight is shown in Table 2.
Table 2 — Operating Weights
C
B
A
D
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning over-
head obstruction or for vertical clearances.
LOCATION DIMENSION CONDITION
A
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
B40 in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall)
36 in. (914 mm) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
C36 in. (914 mm) Side condensate drain is used
18 in. (457 mm) Minimum clearance
D42 in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36 in. (914 mm) Surface behind servicer is electrically non-conductive (e.g., wood, fiberglass)
551J UNIT LB (KG)
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)
Perfect Humidity™
System 27 (10) 34 (13) 34 (13)
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)

7
Step 2 — Plan for Sequence of Unit Installation
The support method used for this unit will dictate differ-
ent 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
1. Install curb
2. Install field-fabricated ductwork inside curb
3. Install accessory thru-base service connection package
(affects curb and unit) (refer to accessory installation
instructions for details)
4. Prepare bottom condensate drain connection to suit
planned condensate line routing (refer to Step 10 —
Install External Condensate Trap and Line on page 12
for details)
5. Rig and place unit
6. Install outdoor air hood
7. Install condensate line trap and piping
8. Make electrical connections
9. Install other accessories
PAD-MOUNTED INSTALLATION
1. Prepare pad and unit supports
2. Check and tighten the bottom condensate drain connec-
tion plug
3. Rig and place unit
4. Convert unit to side duct connection arrangement
5. Install field-fabricated ductwork at unit duct openings
6. Install outdoor air hood
7. Install condensate line trap and piping
8. Make electrical connections
9. Install other accessories
FRAME-MOUNTED INSTALLATION
Frame-mounted applications generally follow the se-
quence for a curb installation. Adapt the sequence as re-
quired 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, amper-
age 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.
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. 4. Assemble and install accessory roof curb in accor-
dance with instructions shipped with the curb.
Curb should be level. This is necessary for unit drain to
function properly. Unit leveling tolerances are shown in
Fig. 5. Refer to Accessory Roof Curb Installation Instruc-
tions 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 connec-
tion 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 connec-
tions to the basepan in accordance with the accessory instal-
lation 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. 4. 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 re-
quired.
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.

8
Fig. 4 — Roof Curb Details
EE
7/16" [11]
4 9/16"
[115.5]
1/4"
[7.0]
5' 7-3/8"
[1711.3]
1' 4-13/16" [427] INSIDE
1-3/4" [44.4]
2-3/8" [61]
1-3/4" [44.5]
1.00" [25.4]
"A"
1-3/4" [44.4]
21.74"
[552.2]
5.42"
[137.7]
11.96"
[303.8]
4.96"
[126.0] 70.87"
[1800.2]
40.69"
[1033.5]
21.84"
[554.7]
16.03"
[407.2]
1.75"
[44.5] 20.41"
[518.3]
3.00" [76.2]
13.78"
[350.0]
14.00"
[355.6]
3.00" [76.2]
15.19"
[385.8]
32.19"
[817.6]
3'-1 3/16"
[944.6]
"A"
1-3/4" [44.5]
CRBTMPWR001A01 3/4" [19] NPT
3/4" [19] NPT
1/2" [12.7] NPT
CRRFCURB002A01
CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING POWER WIRING
FITTING
CONTROL WIRING
FITTING
ACCESSORY CONVENIENCE
OUTLET WIRING CONNECTOR
THRU THE CURB
1/2" [12.7] NPT 1/2" [12.7] NPT
CRBTMPWR003A01 THRU THE BOTTOM
ROOF CURB
ACCESSORY # A
CRRFCURB001A01 14"
[356]
24"
[610]
NOTES: 1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED. 2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY. 3. DIMENSIONS IN [ ] ARE IN MILLIMETERS. 4. ROOFCURB: 18 GAGE STEEL. 5. ATTACH DUCTWORK TO CURB. (FLANGES OF DUCT REST ON CURB). 6. SERVICE CLEARANCE 4 FEET ON EACH SIDE. 7. DIRECTION OF AIR FLOW. 8. CONNECTOR PACKAGE CRBTMPWR001A01 IS FOR THRU-THE-CURB GAS TYPE PACKAGE CRBTMPWR003A01 IS FOR THRU-THE-BOTTOM TYPE GAS CONNECTIONS.
TYPICAL (4) SIDES
SUPPLY AIR RETURN AIR
ROOFING MATERIAL (FIELD SUPPLIED)
CANT STRIP (FIELD SUPPLIED)
ROOFING FELT (FIELD SUPPLIED)
COUNTER FLASHING (FIELD SUPPLIED)
UNIT
GASKET
(SUPPLIED WITH CURB)
RIGID INSULATION (FIELD SUPPLIED)
DUCT
(FIELD SUPPLIED)
NAIL (FIELD SUPPLIED)
VIEW "B"
CORNER DETAIL
SEE VIEW "B"
RETURN AIR
SUPPLY AIR
SUPPLY AIR OPENING
RETURN AIR OPENING
GAS SERVICE PLATE THRU THE CURB DRILL HOLE 2" [50.8] @ ASSEMBLY (IF REQUIRED) (SEE NOTE #8)
SEE NOTE #2
11 3/4"[298.5] WIDE INSULATED DECK PANELS
8 9/16"[217.5] WIDE INSULATED DECK PANEL
1/3/4"[44.5]
SCALE 0.250
E-ESECTION
48TC400427

9
Fig. 5 — 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. Do not connect ductwork to
unit.
Fabricate supply ductwork so that the cross sectional di-
mensions are equal to or greater than the unit supply duct
opening dimensions for the first 18 in. (458 mm) of duct
length from the unit basepan.
Insulate and weatherproof all external ductwork, joints,
and roof openings with counter flashing and mastic in ac-
cordance with applicable codes.
Ducts passing through unconditioned spaces must be in-
sulated 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 ap-
plicable fire codes.
UNITS WITH ACCESSORY ELECTRIC HEATERS
All installations require a minimum clearance to com-
bustible surfaces of 1 in. (25 mm) from duct for first 12 in.
(305 mm) away from unit.
Outlet grilles must not lie directly below unit discharge.
NOTE: A 90-degree elbow must be provided in the ductwork
to comply with UL (Underwriters Laboratories) code for use
with electric heat.
Step 6 — Rig and Place Unit
Keep unit upright and do not drop. Spreader bars are re-
quired. Rollers may be used to move unit across a roof. Rig-
ging materials under unit (cardboard or wood) must be re-
moved PRIOR to placing the unit on the roof curb. Level by
using unit frame as a reference. See Table 2 on page 6 and
Fig. 6 for additional information.
Lifting holes are provided in base rails as shown in
Fig. 6. Refer to rigging instructions on unit.
Before setting the unit onto the curb, recheck gasketing
on curb.
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage to roof-
ing materials.
Membrane roofs can be cut by sharp sheet metal edges. Be
careful when placing any sheet metal parts on such roof.
A
B
C
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
A-B B-C A-C
0.5 (13) 1.0 (25) 1.0 (25)
WARNING
PERSONAL INJURY HAZARD
Failure to follow this warning could cause personal injury.
For vertical supply and return units, tools or parts could
drop into ductwork and cause an injury. Install a 90-degree
turn in the return ductwork between the unit and the condi-
tioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be installed
to prevent objects from falling into the conditioned space.
Due to electric heater, supply duct will require 90-degree
elbow.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment dam-
age.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck when panels or pack-
aging are removed.
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.

10
Fig. 6 — Rigging Details
POSITIONING ON CURB
Position unit on roof curb so that the following clearanc-
es 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 be-
tween the roof curb and the base rail inside on the condenser
end of the unit being approximately 1/4in. (6.4 mm).
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
After unit is in position, remove rigging skids and ship-
ping 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, re-
move screws from side duct opening covers (see Fig. 7) and
remove covers. Use the screws to install the covers on verti-
cal duct openings with the insulation-side down. The panels
must be inserted into the notches on the basepan to properly
seal. The notches are covered by the tape used to secure the
insulation to the basepan and are not easily seen. See Fig. 8
for position of the notches in the basepan. Seals around duct
openings must be tight. Secure with screws as shown in
Fig. 9. Cover seams with foil duct tape.
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 informa-
tive data plate when insulating horizontal ductwork.
Fig. 7 — Horizontal Conversion Panels
Fig. 8 — Location of Notches
DETAIL "A"
PLACE ALL SEAL STRIP IN PLACE
BEFORE PLACING UNIT ON ROOF CURB.
DUCT END
SEE DETAIL "A"
"A"
(914-1371)
36"- 54"
"C"
"B"
SPREADER
BARS
REQUIRED
NOTES:
1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.
2. Dimensions in ( ) are in millimeters.
3. 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.
UNIT MAX WEIGHT DIMENSIONS
ABC
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
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment dam-
age.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck when panels or pack-
aging are removed.
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
BASEPAN
NOTCHES NOTCHES

11
Fig. 9 — Horizontal Duct Panels In Place
Step 8 — Install Outside Air Hood
ECONOMIZER AND TWO-POSITION DAMPER HOOD
PACKAGE REMOVAL AND SETUP (FACTORY
OPTION)
NOTE: Economizer and two position damper are not available
as factory-installed options for single phase (-J voltage code)
models.
The hood is shipped in knock-down form and must be
field assembled. The indoor coil access panel is used as the
hood top while the hood sides, divider and filter are pack-
aged together, attached to a metal support tray using plastic
stretch wrap, and shipped in the return air compartment be-
hind the indoor coil access panel. The hood assembly’s met-
al tray is attached to the basepan and also attached to the
damper using two plastic tie-wraps.
1. To gain access to the hood, remove the filter access
panel. See Fig. 10.
Fig. 10 — Typical Access Panel Locations
2. Locate the (2) screws holding the metal tray to the
basepan and remove. Locate and cut the (2) plastic tie-
wraps securing the assembly to the damper. See Fig. 11.
Avoid damaging any wiring or cutting tie-wraps secur-
ing any wiring.
Fig. 11 — Economizer and Two-Position Damper Hood
Parts Location
3. Carefully lift the hood assembly (with metal tray)
through the filter access opening and assemble per the
steps outlined in the “Economizer Hood and Two-Posi-
tion Hood Assembly” section below.
ECONOMIZER AND TWO-POSITION HOOD
ASSEMBLY
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 ex-
haust 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. 12.
Fig. 12 — Indoor Coil Access Panel Relocation
2. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws pro-
vided to attach the hood sides to the hood top. Use
screws provided to attach the hood sides to the unit. See
Fig. 13.
SCREWS
DUCT COVERS
SHEET METAL
FACE UP
BASEPAN
FILTER ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
COMPRESSOR
ACCESS PANEL
HOOD PARTS
PLASTIC TIE WRAP
QTY (2)
SCREWS FOR
METAL TRAY
QTY (2)
TOP
PANEL
INDOOR
COIL
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
CAULK
HERE
TOP
PANEL

12
Fig. 13 — Economizer Hood Construction
3. Remove the shipping tape holding the economizer
barometric relief damper in place (economizer only).
4. Insert the hood divider between the hood sides. See
Fig. 13 and 14. 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 fil-
ter rack (hood divider). Push the filter into position past
the open filter clips. Close the filter clips to lock the fil-
ter into place. See Fig. 14.
6. Caulk the ends of the joint between the unit top panel
and the hood top.
7. Replace the filter access panel.
Fig. 14 — Economizer Filter Installation
Step 9 — Units with Hinged Panels Only
Relocate latch shipped inside the compressor compart-
ment behind the hinged compressor door to location shown
in Fig. 15 after unit installation.
If the unit does not have hinged panels, skip this step and
continue at Step 10 below.
Fig. 15 — Compressor Door Latch Location
Step 10 — Install External Condensate Trap and
Line
The unit has one 3/4-in. condensate drain connection on
the end of the condensate pan and an alternate connection
on the bottom. See Fig. 16. Unit airflow configuration does
not determine which drain connection to use. Either drain
connection can be used with vertical or horizontal applica-
tions.
When using the standard side drain connection, ensure
that 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 1/2-in. square socket drive ex-
tension.
To use the alternate bottom drain connection, remove the
red drain plug from the bottom connection (use a 1/2-in.
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. 17.
Fig. 16 — Condensate Drain Pan (Side View)
Fig. 17 — Condensate Drain Pan Piping Details
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
19 1/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
33 3/8”
(848mm)
(483mm)
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
DRAIN
(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
ALTERNATE
BOTTOM DRAIN
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4-in. (102 mm) trap isrecommended.
MINIMUM PITCH
1˝ (25 mm) PER
10´ (3m) OF LINE
BASE RAIL
OPEN
VENT
TO ROOF
DRAIN
DRAIN PLUG
ROOF
CURB
SEE NOTE
3˝ (76 mm)
MIN

13
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 down-
stream from the external trap, pitch the line away from the
unit at 1 in. per 10 ft (25 mm per 3 m) of run. Do not use a
pipe size smaller than the unit connection (3/4in.).
Step 11 — Make Electrical Connections
NOTE: Field-supplied wiring shall conform with the limita-
tions of minimum 63°F (33°C) rise.
FIELD POWER SUPPLY
If equipped with optional Powered Convenience Outlet,
the power source leads to the convenience outlet’s trans-
former 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 con-
venience 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. See Convenience Outlets on page 14
for power transformer connections.
The 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. Maximum wire size is #2ga AWG
(copper only). See Fig. 18 and unit label diagram for field
power wiring connections.
NOTE: Unit may be equipped with short test leads (pigtails) on
the field line connection points on contactor C or optional dis-
connect 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 direct-
ly to line connection pressure lugs only.
Fig. 18 — Power Wiring Connections
UNITS WITH FACTORY-INSTALLED DISCONNECT
The factory-installed optional disconnect switch is locat-
ed in a weatherproof enclosure located under the main con-
trol box. The manual switch handle is accessible through an
opening in the access panel. Discard the factory test leads
(see Fig. 18).
Connect field power supply conductors to LINE side ter-
minals when the switch enclosure cover is removed to at-
tach the handle.
Fig. 19 — Disconnect Switch and Unit
WARNING
ELETRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
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 Cana-
da, Canadian Electrical Code CSA [Canadian Standards
Association] C22.1), and local electrical codes.
WARNING
FIRE HAZARD
Failure to follow this caution could result in fire, intermit-
tent operation, or unsatisfactory performance.
Do not connect aluminum wire between disconnect
switch and air conditioning unit. Use only copper wire.
See Fig. 19.
C
11 23
Disconnect
per
NEC
208/230-1-60
or
Disconnect
per
NEC
11 13 13 23
L1 L2 L3
TB
C IFC Direct Drive IFM
208/230-3-60
460-3-60
575-3-60
Units Without Disconnect Option
Units With Disconnect Option
L1
L2
L3
2
4
6
1
3
5
Optional
Disconnect
Switch
Disconnect factory test leads; discard.
Factory
Wiring
1-ph Belt Drive IFM
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE

14
UNITS WITHOUT FACTORY-INSTALLED
DISCONNECT
When installing units, provide a disconnect switch per
NEC (National Electrical Code) of adequate size. Discon-
nect sizing data is provided on the unit informative plate.
Locate on unit cabinet or within sight of the unit per nation-
al or local codes. Do not cover unit informative plate if
mounting the disconnect on the unit cabinet.
ALL UNITS
All field wiring must comply with NEC and all local
codes. Size wire based on MCA (Minimum Circuit Amps)
on the unit informative plate. See Fig. 18 and the unit label
diagram for power wiring connections to the unit power ter-
minal blocks and equipment ground. Maximum wire size is
#2ga AWG (copper only) per pole.
Provide a ground fault and short circuit over-current pro-
tection device (fuse or breaker) per NEC Article 440 (or lo-
cal codes). Refer to unit informative data plate for MOCP
(Maximum Over-Current Protection) device size.
All field wiring must comply with the NEC and local re-
quirements.
All units except 208/230v units are factory wired for the
voltage shown on the nameplate. If the 208/230v unit is to
be connected to a 208v power supply, the control transform-
er must be rewired by removing the black wire with the 1/4-
in. female spade connector from the 230v connection and
moving it to the 200v 1/4-in. male terminal on the primary
side of the transformer. Refer to unit label diagram for addi-
tional information. Field power wires will be connected at
line-side pressure lugs on the power terminal block or at
factory-installed option non-fused disconnect.
NOTE: Check all factory and field electrical connections for
tightness.
CONVENIENCE OUTLETS
Two types of convenience outlets are offered on 551J
models: non-powered and unit-powered. Both types provide
a 125-volt GFCI (ground-fault circuit interrupter) duplex re-
ceptacle rated at 15A behind a hinged waterproof access
cover, located on the end panel of the unit. See Fig. 20.
Figure 21 shows the Convenience Outlet Utilization la-
bel which is located below the convenience outlet.
NOTE: Unit powered convenience outlets are not available as
factory installed options for single phase (-J voltage code)
models.
Fig. 20 — Convenience Outlet Location
Fig. 21 — Convenience Outlet Utilization
Notice Label
Installing Weatherproof Cover
A weatherproof while-in-use cover for the factory-installed
convenience outlets is now required by UL standards. This
cover cannot be factory-mounted due its depth; it must be
installed at unit installation. For shipment, the convenience
outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit’s con-
trol box. The kit includes the hinged cover, a backing plate,
and gasket.
1. Remove the blank cover plate at the convenience out-
let; discard the blank cover.
2. Loosen the two screws at the GFCI duplex outlet, until
approximately 1/2in. (13 mm) under screw heads is
exposed. Press the gasket over the screw heads.
3. Slip the backing plate over the screw heads at the key-
hole slots and align with the gasket; tighten the two
screws until snug (do not over-tighten).
4. Mount the weatherproof cover to the backing plate as
shown in Fig. 22.
5. Remove two slot fillers in the bottom of the cover to
permit service tool cords to exit the cover.
6. Check for full closing and latching.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits may use multi-
ple disconnects. Check convenience outlet for power sta-
tus before opening unit for service. Locate its disconnect
switch, if appropriate, and open it. Lock-out and tag-out
this switch, if necessary. WARNING
Failure to follow this warning could result in personal
injury or death.
Disconnect all power to unit and convenience outlet.
Lock-out and tag-out all power.
CONVENIENCE
OUTLET GFCI
PWD-CO FUSE
SWITCH
PWD-CO TRANSFORMER
CONTROL BOX
ACCESS PANEL

15
Fig. 22 — Weatherproof Cover Installation
Non-Powered Convenience Outlet
This type requires the field installation of a general-pur-
pose 125v 15A circuit powered from a source elsewhere in
the building. Observe national and local codes when select-
ing wire size, fuse or breaker requirements, and disconnect
switch size and location. Route 125v power supply conduc-
tors into the bottom of the utility box containing the duplex
receptacle.
Unit-Powered Convenience Outlet
A unit-mounted transformer is factory-installed to step
down the main power supply voltage to the unit to 115v at
the duplex receptacle. This option also includes a manual
switch with fuse, located in a utility box and mounted on a
bracket behind the convenience outlet; access is through the
unit’s control box access panel. See Fig. 20.
The primary leads to the convenience outlet transformer
are not factory-connected. Selection of primary power
source is a customer option. If local codes permit, the trans-
former primary leads can be connected at the line-side ter-
minals on the unit-mounted non-fused disconnect switch;
this will provide service power to the unit when the unit dis-
connect switch is open. Other connection methods will re-
sult in the convenience outlet circuit being de-energized
when the unit disconnect switch is open. See Fig. 23.
Using Unit-Mounted Convenience Outlets
Units with unit-mounted convenience outlet circuits will
often require that two disconnects be opened to de-energize
all power to the unit. Treat all units as electrically energized
until the convenience outlet power is also checked and de-
energization is confirmed. Observe National Electrical
Code Article 210, Branch Circuits, for use of convenience
outlets.
Fig. 23 — Powered Convenience Outlet Wiring
Fuse On Power Type
The factory fuse is a Bussman “Fusetron” T-15, non-re-
newable screw-in (Edison base) type plug fuse.
Duty Cycle
The unit-powered convenience outlet has a duty cycle
limitation. The transformer is intended to provide power on
an intermittent basis for service tools, lamps, etc; it is not in-
tended to provide 15-amps loading for continuous duty
loads (such as electric heaters for overnight use). Observe a
50% limit on circuit loading above 8 amps. Convenience
outlet usage rating:
• Continuous usage: 8 amps maximum
• Intermittent usage: Up to 15 amps maximum for up to 2
hours maximum
See Fig. 24.
Test the GFCI receptacle by pressing the TEST button on
the face of the receptacle to trip and open the receptacle.
Check for proper grounding wires and power line phasing if
the GFCI receptacle does not trip as required. Press the RE-
SET button to clear the tripped condition.
Fig. 24 — Convenience Outlet Utilization
Notice Label
COVER - WHILE-IN-USE
WEATHERPROOF
BASEPLATE FOR
GFCI RECEPTACLE
GASKET
GFCI RECEPTACLE
NOT INCLUDED
TOP
TOP
TOP
WET LOCATIONS
WE T LO CATIONS
UNIT
VOLTAGE
CONNECT
AS
PRIMARY
CONNECTIONS
TRANSFORMER
TERMINALS
208, 230 240 L1: RED + YEL
L2: BLU + GRA
H1 + H3
H2 + H4
460 480
L1: RED
Splice BLU + YEL
L2: GRA
H1
H2 + H3
H4
575 600 L1: RED
L2: GRA
H1
H2

16
FACTORY-OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
This service connection kit consists of a 1/2-in. electrical
bulkhead connector and a 3/4-in. electrical bulkhead connec-
tor, all factory-installed in the embossed (raised) section of
the unit basepan in the condenser section. The 3/4-in. bulk-
head connector enables the low-voltage control wires to
pass through the basepan. The 1/2-in. electrical bulkhead
connector allows the high-voltage power wires to pass
through the basepan. See Fig. 25.
Check tightness of connector lock nuts before connecting
electrical conduits.
Field-supplied and field-installed liquid tight conduit
connectors and conduit may be attached to the connectors
on the basepan. Pull correctly rated high voltage and low
voltage through appropriate conduits. Connect the power
conduit to the internal disconnect (if unit is so equipped) or
to the external disconnect (through unit side panel). A hole
must be field cut in the main control box bottom on the left
side so the 24-v control connections can be made. Connect
the control power conduit to the unit control box at this
hole.
Fig. 25 — Thru-Base Connection Fittings
UNITS WITHOUT THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
1. Install power wiring conduit through side panel open-
ings. Install conduit between disconnect and control
box.
2. Install power lines to terminal connections as shown in
Fig. 18 on page 13.
Voltage to compressor terminals during operation must
be within voltage range indicated on unit nameplate. On 3-
phase units, voltages between phases must be balanced
within 2% and the current within 10%. Use the formula
shown in the example below to determine the percent of
voltage imbalance. Operation on improper line voltage or
excessive phase imbalance constitutes abuse and may cause
damage to electrical components. Such operation would in-
validate any applicable Bryant warranty.
Example: Supply voltage is 230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Determine maximum deviation from average voltage.
(AB) 227-224 = 3 v
(BC) 231-227 = 4 v
(AC) 227-226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
This amount of phase imbalance is satisfactory as it is below
the maximum allowable 2%.
FIELD CONTROL WIRING
The 551J unit requires an external temperature control
device. This device can be a thermostat emulation device
provided as part of a third-party Building Management Sys-
tem or the RTU Open Controller for Building Management
Systems (RTU Open is available as a factory-installed op-
tion only).
THERMOSTAT
Select a Bryant-approved accessory thermostat. When
electric heat is installed in the 551J unit, the thermostat must
be capable of energizing the G terminal (to energize the In-
door Fan Contactor) whenever there is a space call for heat
(energizing the W1 terminal). The accessory thermostats
listed on the unit price pages can provide this signal but they
are not configured to enable this signal as shipped.
Install the accessory thermostat according to installation
instructions included with the accessory.
Locate the thermostat accessory on a solid wall in the
conditioned space to sense average temperature in accor-
dance with the thermostat installation instructions.
If the thermostat contains a logic circuit requiring 24-v
power, use a thermostat cable or equivalent single leads of
different colors with minimum of seven leads. If the ther-
mostat does not require a 24-v source (no “C” connection
required), use a thermostat cable or equivalent with mini-
mum of six leads. See Fig. 26. Check the thermostat instal-
lation instructions for additional features which might re-
quire additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG
(American Wire Gage) insulated wire [35°C (95°F) mini-
mum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insu-
lated wire [35°C (95°F) minimum]. For over 75 ft. (23 m),
use no. 14 AWG insulated wire [35°C (95°F) minimum].
Wire sizes larger than no. 18 AWG cannot be directly con-
nected to the thermostat and will require a junction box and
splice at the thermostat.
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
Average Voltage = (224 + 231 + 226) =681 = 227
33
% Voltage Imbalance = 100x 4=1.78%
227
IMPORTANT: If the supply voltage phase imbalance is more
than 2%, contact your local electric utility company immedi-
ately.
ABC
MOTOR

17
Fig. 26 — Low-Voltage Thermostat Connections
Thermostat Wiring, Units Without Thru-Base Connection
Kit
Pass the thermostat control wires through the hole pro-
vided 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 Controls Connection Board. See Fig. 27.
NOTE: If thru-the-bottom connections accessory is used, refer
to the accessory installation instructions for information on
routing power and control wiring.
Fig. 27 — Field Control Wiring Raceway
HEAT ANTICIPATOR SETTINGS
Set heat anticipator settings at 0.14 amp for the first stage
and 0.14 amp for second-stage heating, when available.
ELECTRIC HEATERS
551J units may be equipped with field-installed accesso-
ry electric heaters. The heaters are modular in design, with
heater frames holding open coil resistance wires strung
through ceramic insulators, line-break limit switches and a
control contactor. One or two heater modules may be used
in a unit.
Heater modules are installed in the compartment below
the indoor (supply) fan outlet. Access is through the indoor
access panel. Heater modules slide into the compartment on
tracks along the bottom of the heater opening. See
Fig. 28-30.
Fig. 28 — Typical Access Panel Location (3-6 Ton)
Fig. 29 — Typical Component Location
X
C
G
W2
R
C
W2
G
W1
O/B/Y2 Y2
W1
R
Y1 Y1
Typical
Thermostat
Connections
T
H
E
R
M
O
S
T
A
T
(Note 1) (Note 2)
(Note 3)
1. Typical multi-function marking. Follow manufacturer’sconfiguration
instructionsto select Y2.
2. Y2 to Y2 connection required on single-stage cooling unitswhen
integrated economizer function isdesired
3. W2 connection not required on unitswith single-stage heating.
Field Wiring
Central
Terminal
Board
Notes:
RACEWAY
HOLE IN END PANEL (HIDDEN)
DISCONNECT MOUNTING
LOCATION
UNIT BLOCK-OFF
PANEL
OUTDOOR
ACCESS PANEL
INDOOR
ACCESS
PANEL
DISCONNECT
MOUNTING
LOCATION
EMT OR RIGID CONDUIT
(FIELD-SUPPLIED)
SINGLE
POINT BOX
CENTER
POST
HEATER
COVERS
HEATER
MOUNTING
BRACKET
HEATER
MODULE
(LOCATION 2)
HEATER
MODULE
(LOCATION 1)
SINGLE POINT
BOX
MOUNTING
SCREW
BRACKET AND
CONDUIT
DRIP BOOT
MAIN
CONTROL
BOX
CONTROL WIRE TERMINAL BLOCK
MANUAL RESET
LIMIT SWITCH

18
Fig. 30 — Typical Module Installation
Not all available heater modules may be used in every
unit. Use only those heater modules that are UL listed for
use in a specific size unit. Refer to the label on the unit cab-
inet for the list of approved heaters.
Unit heaters are marked with Heater Model Numbers,
but heaters are ordered as and shipped in cartons marked
with a corresponding heater Sales Package part number. See
Table 3 for correlation between Heater Model Number and
Sales Package part number.
NOTE: The value in position 9 of the part number differs be-
tween the sales package part number (value is 1) and a bare
heater model number (value is 0).
Single Point Boxes and Supplementary Fuses
When the unit MOCP device value exceeds 60-A, unit-
mounted supplementary fuses are required for each heater
circuit. These fuses are included in accessory Single Point
Boxes, with power distribution and fuse blocks. The single
point box will be installed directly under the unit control
box, just to the left of the partition separating the indoor sec-
tion (with electric heaters) from the outdoor section. The
Single Point Box has a hinged access cover. See Fig. 31.
The Single Point Box also includes a set of power taps and
pigtails to complete the wiring between the Single Point
Box and the unit’s main control box terminals. Refer to the
accessory heater and Single Point Box installation instruc-
tions for details on tap connections on the field-installed
electric heat accessory.
All fuses on 551J units are 60-A. (Note that all heaters
are qualified for use with a 60-A fuse, regardless of actual
heater ampacity, so only 60-A fuses are necessary.)
Fig. 31 — Typical Single Point Installation
Table 3 — Heater Model Number
TRACK
FLANGE
ALLIEDPA
MODELNO.
ERIALNO.
CORP
.
11 13
21 23
OD
22.2
3
1
23
ISTEDAIR
NDITIONING
UIPACCESS
346N
.
P/N
2- 5610-4
REV
1113
2123
CONTROL
BOX
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
FOAM
BUSHING
DRIP BOOT
BRACKET
MOUNTING
SCREWS
HEATER
RELAYS
POWER
WIRES
HEATER
MOUNTING
SCREWS
BARE HEATER
MODEL NUMBER CRHEATER001A0 0
Heater Sales Package
P/N includes:
CRHEATER101A0 0
Bare Heater
Carton and packing
materials
Installation sheet

19
Low-Voltage Control Connections
All units except size 06, 575V:
Pull the low-voltage control leads from the heater mod-
ule(s) — VIO and BRN (two of each if two modules are in-
stalled; identify for Module #1) — to the 4-pole terminal
board TB4 located on the heater bulkhead to the left of
Heater #1. Connect the VIO lead from Heater #1 to terminal
TB4-1. For 2 stage heating, connect the VIO lead from
Heater #2 to terminal TB4-2. For 1 stage heating with 2
heater modules, connect the VIO lead from both Heater #1
and #2 to terminal TB4-1. Connect both BRN leads to ter-
minal TB4-3. See Fig. 32.
Fig. 32 — Accessory Electric Heater Control
Connections (All Units Except Size 06, 575V),
2 Stage Heat Shown
Size 06, 575V units only:
Pull the low-voltage control leads from the heater mod-
ule(s) — VIO, WHT and BRN (two of each if two modules
are installed; identify for Module #1) — to the 4-pole termi-
nal board TB4 located on the heater bulkhead to the left of
Heater #1. Connect the WHT lead from Heater #1 to TB4
where ORN is. For 2 stage heating, connect the VIO lead
from Heater #2 to the terminal that has VIO from the unit.
For 1 stage heating with 2 heater modules, connect the VIO
lead from Heater #2 to the same terminal with WHT lead
from Heater #1 (see Fig. 33).
PERFECT HUMIDITY™ CONTROL CONNECTIONS
Perfect Humidity Space RH Controller
NOTE: Perfect Humidity is a factory-installed option which is
only available for units equipped with belt-drive motors. The
Perfect Humidity system is not available for single phase (-J
voltage code) models.
The Perfect Humidity dehumidification system requires a
field-supplied and field-installed space relative humidity
control device. This device may be a separate humidistat
control (contact closes on rise in space RH above control
setpoint) or a combination thermostat-humidistat control
device with isolated contact set for dehumidification con-
trol.
Fig. 33 — Accessory Electric Heater Control
Connections (Size 06, 575V Only),
2 Stage Heat Shown
To connect a field-supplied humidistat:
1. Route the humidistat 2-conductor cable (field-supplied)
through the hole provided in the unit corner post.
2. Feed wires through the raceway built into the corner
post (see Fig. 27) to the 24-v barrier located on the left
side of the control box. The raceway provides the UL-
required clearance between high-voltage and low-volt-
age wiring.
3. Use wire nuts to connect humidistat cable to two PINK
leads in the low-voltage wiring as shown in Fig. 34.
To connect a field-installed programmable thermostat:
1. Route the Programmable Thermostat multi-conductor
cable (field-supplied) through the hole provided in the
unit corner post.
2. Feed wires through the raceway build into the corner
post (see Fig. 27) to the 24-v barrier located on the left
side of the control box. The raceway provides the UL-
required clearance between high-voltage and low-volt-
age wiring.
3. The Programmable Thermostat has dry contacts at ter-
minals D1 and D2 for dehumidification operation (see
Fig. 35). The dry contacts must be wired between CTB
terminal R and the PINK lead to the LTLO switch with
field-supplied wire nuts. Refer to the installation
instructions included with the Programmable Thermidi-
stat device for more information.
CONTROL AND POWER WIRING DIAGRAMS
Figures 36-40 are typical control and power wiring diagrams.
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
2
3
12
132
TB4
HR2
HR1
Elec Htr
CONTL
BOARD
CTB
Field
Connections
for Field-Installed
Electric Heat
VIO BRN BRNVIO
VIO BRN
VIO BRN
ORN
BRN
VIO
ORN VIO BRN
CONTROL
BOARD
2
12
3
TO 24V TRANS
ORN
VIO
RED
BRN
BRN
BRN
RED
VIO
WHT
LS
HCR2
HCR1
HC2
HC1
Field Connections
for Field Installed
Electric Heat
TB4

20
Fig. 34 — Typical Perfect Humidity™ Dehumidification System Humidistat Wiring
Fig. 35 — Typical Rooftop Unit with Perfect Humidity Dehumidification System with
Field-Installed Programmable Thermostat
Rc
Rh
W1
G
Y2
C
O/W2/B
Y1
OAT
RRS
SRTN
HUM
D1
D2
V+
Vg
X*
C
G
W2
W1
Y2
Y1
R
Programable ThermostatUnit CTB
THERMOSTAT
*Connection not required.
Perfect Humidity™ FIOP