Bryant 524J25A, 524J28A, 524J30A, 524J Series Installation, Start-up And Service Instructions Manual

524J
PACKAGED AIR--HANDLING UNITS, 60 Hz
WITH PURONR(R--410A) REFRIGERANT
SIZES 25, 28, 30

Installation, Start--Up

and Service Instructions

TABLE OF CONTENTS

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

PRE--INSTALLATION 2.........................

Moving and Storage 2..........................

Rigging 2....................................

INSTALLATION 2–18..........................

General 2....................................

Uncrating 2..................................

Accessories 2.................................

Unit Positioning 9.............................

Unit Isolation 11..............................

Refrigerant Piping Access 11....................

Refrigerant Piping 11..........................

Condensate Drain 14...........................

Fan Motors and Drives 15.......................

Power Supply and Wiring 15....................

Connecting Ductwork 17.......................

Return--Air Filters 17..........................

START--UP 19.................................

SERVICE 19–32...............................

Panels 19....................................

Fan Motor Lubrication 20.......................

Fan Shaft Bearings 20..........................

Centering Fan Wheel 20........................

Fan Shaft Position Adjustment 20................

Individual Fan Wheel Adjustment 21..............

Fan Belts 21.................................

Fan Rotation 21...............................

Fan Pulley Alignment 21.......................

Pulley and Drive Adjustment 21..................

Condensate Drains 21..........................

Return--Air Filters 21..........................

Coil Removal 22..............................

Cleaning Cooling Coil 22.......................

Cleaning Insulation 22.........................

Replacing Filters 22...........................

START--UP CHECKLIST 35--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 package

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.

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.

. When you see this symbol on the

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause in 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 in personal
injury,death and/or equipment damage.

R

524J

Puron
higher pressures than standard R--22 systems. Do not
use R--22 service equipment or components on Puron
refrigerant equipment.

PERSONAL INJURY AND ENVIRONMENTAL
HAZARD

Failure to follow this warning could cause in 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.

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
524J units.

(R--410A) refrigerant systems operate at

!

WARNING

!

CAUTION

PRE--INSTALLATION

1. The power supply (v, ph, and Hz) must correspond to
that specified on unit rating plate.

2. The electrical supply provided by the utility must be
sufficient to handle load imposed by this unit.

3. Refer to Installation, General section (page 2) and
Fig. 1 and Fig. 2 for locations of electrical inlets, con­densate drain, duct connections, and required clear­ances before setting unit in place.

4. This installation must conform with local building
codes and with the NEC (National Electrical Code) or
ANSI (American National Standards Institute)/NFPA
(National Fire Protection Association) latest revision.
Refer to provincial and local plumbing or wastewater
codes and other applicable local codes.

Moving and Storage -- To transfer unit from truck to
storage site, use a fork truck. Do not stack units more than
2 high during storage. If unit is to be stored for more than
2 weeks before installation, choose a level, dry storage
site free from vibration. Do not remove plastic wrap or
skid from unit until final installation.

Rigging -- All 524J Series units can be rigged by using the
shipping skid. Units are shipped fully assembled. Do not

remove shipping skids or protective covering until unit is
ready for final placement; damage to bottom panels can
result. Use slings and spreader bars as applicable to lift
unit.

INSTALLATION

General -- Allow the following clearances for service

access and airflow:

1

S Rear: 3 ft (914 mm) [2

accessory]

1

S Front: 2
S Right Side: 3
S Left Side: 2

For units equipped with an economizer, refer to the
accessory installation instructions for additional clearance
requirements. Be sure floor, wall, or ceiling can support
unit weight (Tables 1A – 1D). See Fig. 1 and Fig. 2 for
dimensions.

Uncrating -- Move unit as near as possible to final
location before removing shipping skid.

/2ft (762 mm)

1

/2ft (1067 mm)

1

/2ft (762 mm)

/2ft (762 mm) with electric heat

!

CAUTION

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment
damage.

Ensure voltage listed on unit data plate agrees with
electrical supply provided for the unit.

Remove metal banding, top skid, and plastic wrap.
Examine unit for shipping damage. If shipping damage is
evident, file claim with transportation agency. Remove
base skid just prior to actual installation.

Check nameplate information against available power
supply and model number description in Fig. 3.

NOTE: Be sure to remove the styrofoam shipping pad
from the thermostatic expansion valve (TXV). Verify that
it has been removed. See Fig. 5.

Accessories -- Refer to instructions shipped with each
accessory for specific information.

2

Table 1A — 524J***A Physical Data, English — Cooling Units

UNIT 524J* 25A 28A 30A

NOMINAL CAPACITY (Tons) 20 25 30

OPERATING WEIGHT (lb)

Base Unit with TXV 730 1050 1062

Plenum 225 325 325

FANS

Qty...Diam. (in.) 2...15 2...18 2...18

Nominal Airflow (cfm) 8000 10000 12000

Airflow Range (cfm) 6000 – 10000 7500 – 12500 9000 – 15000

Nominal Motor Hp (Standard Motor)

208/230--- 3 ---60 and 460 --- 3---60 5.0 7.5 10.0

5 7 5 --- 3 --- 6 0 5.0 7.5 10.0

Motor Speed (rpm)

208/230--- 3 ---60 and 460 --- 3---60 1745 1745 1745

5 7 5 --- 3 --- 6 0 1745 1755 1755

REFRIGERANT R--- 410A

Operating charge (lb)
(approx per circuit)*

DIRECT--- EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins

Max Working Pressure (psig) 650

Face Area (sq ft) 19.88 24.86 29.83

No. of Splits 2 2 2

No. of Circuits per Split 18 20 24

Split Type...Percentage Face...50/50

Rows...Fins/in. 4...15 4...15 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...11/

DX Coil — Liquid Refrigerant (ODF) 2...5/

Steam Coil, In (MPT) 1...21/

Steam Coil, Out (MPT) 1...1/

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...11/4ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (in.)

Access Location Either Side

STEAM COIL**

Max Working Pressure (psig at 260° F) 20

Tota l F a ce Ar e a ( s q ft) 13.33 15.0 15.0

Rows...Fins/in. 1...10 1...10 1...10

HOT WATER COIL**

Max Working Pressure (psig) 150

Tota l F a ce Ar e a ( s q ft) 13.33 15.0 15.0

Rows...Fins/in. 2...8.5 2...12.5 2...12.5

Water Volume

(gal) 13.9 14.3

(ft3) 1.90

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

* Units are shipped without refrigerant charge.
** Field installed accessory only.

3.5

8

4...16 x 20 x 2

4...16 x 24 x 2

4.5 5.0

2...13/

8

8

2

2

4...20 x 24 x 2

4...20 x 25 x 2

2...13/

8

524J

3

524J

Table 1B —524J***A Physical Data, SI — Cooling Units

UNIT 524J* 25A 28A 30A

NOMINAL CAPACITY (kW) 70 87 105

OPERATING WEIGHT (kg)

Base Unit with TXV 331 477 482

Plenum 102 148 148

FANS

Qty...Diam. (mm) 2...381 2...457 2...457

Nominal Airflow (L/s) 3775 4119 5663

Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079

Nominal Motor kW (St andard Motor)

208/230--- 3 ---60 and 460 --- 3---60 3.73 5.60 7.46

5 7 5 --- 3 --- 6 0 3.73 5.60 7.46

Motor Speed (r/s)

208/230--- 3 ---60 and 460 --- 3---60 29.1 29.1 29.1

5 7 5 --- 3 --- 6 0 29.1 29.3 29.3

REFRIGERANT R--- 410A

Operating charge (kg)

(approx per circuit)*

DIRECT--- EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins

Max Working Pressure (kPag) 4481

Face Area (sq m) 1.85 2.30 2.77

No. of Splits 2 2 2

No. of Circuits per Split 18 20 24

Split Type...Percentage Face...50/50

Rows...Fins/m 4...591 4...591 4...591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...11/

DX Coil — Liquid Refrigerant (ODF) 2...5/

Steam Coil, In (MPT) 1...21/

Steam Coil, Out (MPT) 1...1/

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...11/4ODM/1 IDF

FILTERS Throwaway — Factory Supplied

Quantity...Size (mm.)

Access Location Either Side

STEAM COIL**

Max Working Pressure (kPag at 126°C) 138

Tota l F a ce Ar e a ( s q m) 1.24 1.39 1.39

Rows...Fins/m 1...394 1...394 1...394

HOT WATER COIL**

Max Working Pressure (kPag) 1034

Tota l F a ce Ar e a ( s q m) 1.24 1.39 1.39

Rows...Fins/m 2...335 2...335 2...335

Water Volume

(L) 52.6 54.1

(m3) 0.052 0.054

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

* Units are shipped without refrigerant charge.
** Field installed accessory only.

1.59

8

4...406 x 508 x 51

4...406 x 610 x 51

2.04 2.27

2...13/

8

8

2

2

2...13/

4...508 x 610 x 51

4...508 x 635 x 51

8

4

Table 1C — 524J*25H Physical Data, English — Heat Pump Units

UNIT 524J* 25H

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

Base Unit with TXV 720

Plenum 140

FANS

Qty...Diam. (in.) 2...15

Nominal Airflow (cfm) 8000

Airflow Range (cfm) 6000 --- 10000

Nominal Motor Hp (Standard Motor)

208/230--- 3 ---60 and 460 --- 3---60 5.0

5 7 5 --- 3 --- 6 0 5.0

Motor Speed (rpm)

208/230--- 3 ---60 and 460 --- 3---60 1745

5 7 5 --- 3 --- 6 0 1745

REFRIGERANT

Operating charge (lb)
(approx per circuit)*

DIRECT--- EXPANSION COIL

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

Max Working Pressure (psig) 650

Face Area (sq ft) 19.9

No. of Splits 2

No. of Circuits per Split 2

Split Type...Percentage Face....50/50

Rows...Fins/in. 4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...1

DX Coil — Liquid Refrigerant (ODF) 2...

Steam Coil, In (MPT) 1...2

Steam Coil, Out (MPT) 1...1

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...1

FILTERS

Throwaway — Factory Supplied

Quantity...Size (in.) 4...16 x 20 x 2

Access Location RightorLeftSide

STEAM COIL**

Max Working Pressure (psig at 260° F) 20

Tota l F a ce Ar e a ( s q ft) 13.33

Rows...Fins/in. 1...10

HOT WATER COIL**

Max Working Pressure (psig) 150

Tota l F a ce Ar e a ( s q ft) 13.33

Rows...Fins/in. 2...8.5

Water Volume

(gal) 13.9

(ft3) 1.85

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

*

Units are shipped without refrigerant charge.

** Field installed accessory only.

20

R--- 410A

3.5/3.5

1/

8

5/

8

1/

2

1/

2

1/

ODM/1 IDF

4

4...16 x 24 x 2

524J

5

524J

Table 1D — 524J*25H Physical Data, SI — Heat Pump Units

UNIT 524J* 25H

NOMINAL CAPACITY (kW)

OPERATING WEIGHT (kg)

Base Unit with TXV 326

Plenum 44

FANS

Qty...Diam. (mm) 2...381

Nominal Airflow (L/s) 3775

Airflow Range (L/s) 2831--- 4719

Nominal Motor kW (St andard Motor)

208/230--- 3 ---60 and 460 --- 3---60 3.73

5 7 5 --- 3 --- 6 0 3.73

Motor Speed (r/s)

208/230--- 3 ---60 and 460 --- 3---60 29.1

5 7 5 --- 3 --- 6 0 29.1

REFRIGERANT

Operating charge (kg)
(approx per circuit)*

DIRECT--- EXPANSION COIL

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

Max Working Pressure (kPag) 4482

Face Area (sq m) 1.85

No. of Splits 2

No. of Circuits per Split 2

Split Type...Percentage Face...50/50

Fins/m 591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF) 2...1

DX Coil — Liquid Refrigerant (ODF) 2...

Steam Coil, In (MPT) 1...2

Steam Coil, Out (MPT) 1...1

Hot Water Coil, In (MPT) 1...2

Hot Water Coil, Out (MPT) 1...2

Condensate (PVC) 1...1

FILTERS

Throwaway — Factory Supplied

Quantity...Size (mm)

Access Location RightorLeftSide

STEAM COIL**

Max Working Pressure (kPag at 126°C) 138

Tota l F a ce Ar e a ( s q m) 1.24

Rows...Fins/m 1...394

HOT WATER COIL**

Max Working Pressure (kPag) 1034

Tota l F a ce Ar e a ( s q m) 1.24

Rows...Fins/m 2...335

Water Volume

(L) 52.6

(m3) 0.052

LEGEND

DX — Direct Expansion
TXV — Thermostatic Expansion Valve

*

Units are shipped without refrigerant charge.

** Field installed accessory only.

70

R--- 410A

1.59/1.59

1/

8

5/

8

1/

2

1/

2

1/

ODM/1 IDF

4

4...406 x 610 x 51

4...406 x 508 x 51

6

LEGEND

TXV — Thermostatic Expansion Valve
NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm]
with electric heat accessory)

• Front: 2 ft, 6 in. [762 mm]

• Right Side: 2 ft, 6 in. [762 mm]

• Left Side: 2 ft, 6 in. [762 mm]

• Local codes or jurisdiction may prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field
installed.

524J

Fig. 1 -- Dimensions – Size 25

7

UNIT

524J*25A 730 (331)
524J*25H 720 (326)

UNIT WEIGHT

lb (kg)

C10834

524J

LEGEND

TXV — Thermostatic Expansion Valve
NOTES:

1. Dimensions in [ ] are in millimeters.

2. Direction of airflow.

3. Recommended clearance:

• Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm]
with electric heat accessory)

• Front: 2 ft, 6 in. [762 mm]

• Right Side: 2 ft, 6 in. [762 mm]

• Left Side: 2 ft, 6 in. [762 mm]

• Local codes or jurisdiction may prevail.

4. Liquid piping not supplied by Carrier.

5. Duct flange is factory supplied and field
installed.

6. 40RUS may require alternate or additional
field favricated poping access holes

Fig. 2 -- Dimensions – Sizes 28 and 30

8

UNIT

524J*28A
524J*30A

lb (kg)

1050 (477)
1062 (482)

C10835

Model Type

524J = Bryant Fan Coil
Puronr R--- 410A Refrigerant

Voltage

E = 460/3/60
P = 208 / 230/3/60
T = 575/3/60

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

5 2 4 J E 2 5 A 0 0 0 A 2 0 A A A

_____________

____

Not Used

A = Not Used

Service Options

A=None

B = Painted Cabinet

Packa ging

A=Standard

Nominal Tonnage

25 = 20 Tons
28 = 25 Tons
30 = 30 Tons

Typ e o f C oi l

A = Standard DX Coil
B = High Capacity DX Coil
H = DX Coil for Heat Pump Duty

Not Used

0=Not Used

Not Used

0=Not Used

POSITION NUMBER
TYPICAL

Not Used

0 = Not Used

Indoor Fan Options

1 = Fan Drive and Motor - Low / Motor Efficency - Standard
2 = Fan Drive and Motor - Med / Motor Efficency - Standard
3 = Fan Drive and Motor - High / Motor Efficency - Standard

Coil Options

A=Al/Cu

Not Used

0 = Not Used

C10837

Fig. 3 -- Model Number Nomenclature

12345678910
2610G12345

SETANGISEDNOITISOP

)radnelac lacsif( erutcafunam fo keeW1−2

Year of manufacture (“10” = 2010)3−4

)ASU ,saxeT ,PTE = G( noitacol gnirutcafunaM5

rebmun laitneuqeS6−10

C!0725

Fig. 4 -- Serial Number Nomenclature

524J

TXV COIL

REMOVE FOAM BLOCK

LEGEND

TXV — Thermostatic Expansion Valve

C10683

Fig. 5 -- Foam Block Location

Unit Positioning -- The unit can be mounted on the floor

for vertical application with return air entering the face of
the unit and supply air discharging vertically through the
top of the unit. The unit can also be applied in a
horizontal arrangement with return air entering

horizontally and the supply air discharging horizontally.
When applying the unit in a horizontal arrangement,
ensure the condensate drain pan is located at the bottom
center of the unit for adequate condensate disposal. See
Fig. 6 for condensate connections for each unit position.

PLUG

PLUG

Note: Maintain recommended clearances

CONDENSATE
DRAIN

LEGEND

Accessory Line
Alternate Air Intake and Discharge

Air Intake and Discharge

per Fig. 1 and Fig. 2

C10684

Fig. 6 -- Typical Unit Positioning

9

Typical positioning and alternate return air locations are
shown in Fig. 6. Alternate return air locations can be used
by moving the unit panel from the alternate return air
location to the standard return air location. Refer to
overhead suspension accessory drawing (Fig. 7) for

OVERHEAD SUSPENSION ACCESSORY — UNIT SIZE 25

524J

preferred suspension technique. The unit needs support
underneath to prevent sagging.

IMPORTANT: Do NOT attempt to install unit with return
air entering top panel of unit. Condensate will not drain from
unit.

OVERHEAD SUSPENSION ACCESSORY — UNIT SIZES 28, 30

NOTE: Dimensions in [ ] are millimeters

Fig. 7 -- Preferred Suspension Technique

C10728

10

Unit Isolation -- Where extremely quiet operation is
essential, install isolators between floor and base of unit,
or between ceiling and top section of unit.

Be sure that unit is level and adequately supported. Use
channels at front and sides of unit for reference points
when leveling.

Refrigerant Piping Access -- The 524J Series units come
with standard knockouts for refrigerant piping. These
knockouts are located on both sides of the unit for
installation flexibility. The standard knockouts provide
sufficient access to the unit’s coils for all 524J*25A, 28A
and 30A units. The 524J*25H requires additional holes
which must be field--fabricated to accommodate the
piping. See Fig. 8 for positions and dimensions for the
additional access holes required. Recommended access
hole use is also listed for all units. Note that Fig. 8 shows
the access holes on the control--box side of the unit; this is
the side of the unit with the coil headers, so it is used most
often for piping access.

IMPORTANT: Do not bury refrigerant piping
underground.

Refrigerant Piping -- See Tables 1A–1D for refrigerant
pipe connection sizes. For ease in brazing, it is
recommended that all internal solder joints be made
before unit is placed in final position.

The 524J direct--expansion units have internal
factory--installed thermostatic expansion valves (TXVs),
distributors, and nozzles for use with R--410A. See Table 2
for part numbers. Knockouts are provided in the unit corner
posts for 524J refrigerant piping. See Fig. 8, which also lists
recommended knockouts and access holes to use for each
524J unit size. Recommended fittings are listed in Table 3.

The sensor bulb capillary tubes must be routed from the
TXVs inside the unit through one of the piping access
holes. Clamp the TXV sensor bulb on a vertical portion of
the suction line, outside the unit. See Fig. 9.

NOTE: Be sure to remove the styrofoam shipping pad
from the TXV. Verify that it has been removed. See Fig. 5.

IMPORTANT: Never attach the sensor to the suction
manifold. Do NOT mount the sensor on a trapped portion
of the suction line.

The 524J Series evaporator coils have a face--split design.
Ensure that lower circuit of coil is first on/last off when
connected to the condensing unit and/or system controls.
See Fig. 10.

External TXV equalizer connections are provided and
factory--brazed into the coil suction manifolds.

If suction line must be horizontal, clamp bulb to suction
line at least 45 degrees above bottom, at approximately
the 4 o’clock or 8 o’clock position. See Fig.11.

524J

7
6
5

4
3

2
1

UNIT

524J*25A, 28A, 30A 1,2, 3, 4 — — — — — —

524J*25H 3*,5,6,7 11/8(28.6) 11/8(28.6) 13/4(44.5) 3.25 (82.6) 6.125 (155.6) 10.38 (263.7)

*Must be enlarge d from 11/8in. (28.6mm) to 13/4in. (44.5mm)
N O TE : Acc e s s ho l e k no cko u t s 1 --- 4 ar e fact o r y --- s u p p l i e d .

USE HOLE
NUMBERS

FIELD-- FABRIC ATED HOLE DIAMATERS

in. ( mm)

No. 5 No. 6 No. 7 A B C

A

FIELD-- FABRIC ATED HOLE POSITION DIMENSIONS

B

C

in. ( mm)

Fig. 8 -- Refrigerant Piping Access Holes

11

C10838

UPPER
SPLIT

AIRFLOW

LOWER
SPLIT

TXV
SENSING
BULB

15 DIAMS

MIN

TXV
SENSING
BULB

10

DIAMS

8 DIAMS

MIN

EQUALIZER LINE

TXV

EQUALIZER

LINE

FILTER

DRIER

SOLENOID

VALV E

SIGHT

GLASS

524J

8 DIAMS

MIN

TXV

INDOOR
COIL

AIRFLOW

15 DIAMS

MIN

10

DIAMS

LEGEND:

TXV – Thermostatic Expansion Valve
NOTE: Component location arrangemetshown for field installation of

sight glasses, solenoid valves, filter driers, and TXV sensing bulbs.
The TXVs and equilizer lines are factory installed.

Fig. 9 -- Face--Split Coil Suction and Liquid Line Piping (Typical)

C10726

FIRST ON/LAST OFF = B

VERTICAL INSTALLATION

FIRST ON/LAST OFF = A

HORIZONTAL INSTA LLATIO N

Fig. 10 -- Typical Evaporator Coil Connections (524J)

LEGEND

TXV — Thermostatic Expansion Valve
NOTE: The 8 o’clock position is shown above.

C10689

Fig. 11 -- TXV Sensing Bulb Location

C10688

12

Table 2 – Factory--Installed Nozzle and Distributor Data

UNIT

COIL TYPE

STD

524J*25A 4Row 2 . . . B B I Z E --- 8 --- G A 2...D196--- 18---3/

TXV

Qty...Part No.

DISTRIBUTOR

Qty...Part No.

16

524J*28A 4Row 2 . . . B B I Z E --- 15 --- G A 2...1126 20...3/

524J*30A 4Row 2 . . . B B I Z E --- 15 --- G A 2...1126 24...3/

524J*25H 4Row 2 . . . B B I Z E --- 12 . 5 --- G A 2...113 --- 12 ---3/

]

Feeder tu be size is1/4in. (6.35 mm).

NOTE: Hot gas bypass applications require field -- -supplied auxiliary side connector.

16

Table 3 – Fitting Requirements

UNIT ACCESS HOLE NO.

1 Suction Lower

2 Liquid Lower

524J*25A

3 Liquid Upper

4 Suction Upper

3 Suction Lower

5 Suction Lower

524J*25H

6 Liquid Upper

7 Suction Upper

1 Suction Lower

2 Liquid Lower

524J*28A

3 Liquid Upper

4 Suction Upper

]

See Fig. 8 for access hole location by number.

† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.

]

CONNECTION TYPE CIRCUIT FITTINGS REQUIRED†(in.)

FEEDER TUBES

PER DISTRIBUTOR

Qty...Size (in.)

18...3/

16

16

16

2 --- 1 2 . . .3/

16

11/8Street Elbow

11/8Nipple, 75/8L

11/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 61/2L

5

/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 91/2L

5

/8Long Radius Elbow

11/8Nipple, 55/8L

11/8Long Radius Elbow

11/8Nipple, 11 L

11/8Long Radius Elbow

11/8Nipple, 3 L

11/8Long Radius Elbow

5

/8Nipple, 27/8L

5

/845_ Elbow

5

/8Nipple, 15/8L

5

/8Long Radius Elbow

5

/8Nipple, 27/8L

5

/845_ Elbow

5

/8Nipple, 41/4L

5

/8Long Radius Elbow

11/8Nipple, 5 L

11/845_ Elbow

11/8Nipple, 83/4L

11/8Long Radius Elbow

13/8Street Elbow

13/8Nipple, 11 L

13/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 11/2L

5

/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 191/2L

5

/8Long Radius Elbow

13/8Nipple, 43/16L

13/8Long Radius Elbow

13/8Nipple, 231/4L

13/8Long Radius Elbow

]

NOZZLE

Qty...Part No.

2...G6

2...C15

2...C17

2...G8

524J

13

Table 3 — Fitting Requirement (cont)

UNIT ACCESS HOLE NO.

1 Suction Lower

2 Liquid Lower

524J*30A

3 Liquid Upper

4 Suction Upper

]

See Fig. 8 for access hole location by number.

† Fittings are listed in order from header or tee stub connection out to access hole in corner support post.

]

CONNECTION TYPE CIRCUIT FITTINGS REQUIRED†(in.)

13/8Street Elbow
13/8Nipple, 3 L
13/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 73/4L

5

/8Long Radius Elbow

5

/8Street Elbow

5

/8Nipple, 181/2L

5

/8Long Radius Elbow
13/8Nipple, 43/16L
13/8Long Radius Elbow
13/8Nipple, 191/4L
13/8Long Radius Elbow

Condensate Drain -- Install a trapped condensate drain line

524J

to unit connection as shown in Fig. 12. The unit drain
connection is a PVC stub. See Fig. 13. Some areas may
require an adapter to connect to either galvanized steel or
copper pipe. For these applications, install a field--supplied
threaded PVC adapter.

3” MIN.

[76]

Install clean--out plugs in trap. Pitch drain line downward
to an open floor drain or sump. Provide service clearance
around drain line to permit removal of unit panels.
Observe all local sanitary codes.

C10692

Fig. 13 -- Drain Pan Slope Adjustment

NOTE: Dimensions in [ ] are in millimeters

Fig. 12 -- Condensate Drains

NOTE: A trap must be installed in the condensate drain

line to ensure that the static pressure of fans is balanced with
the water column in the drain line and that condensate can
drain completely from pan. Without a trap, air can be drawn
up drain line until water level in condensate pan becomes
equal to static pressure created by fans, preventing complete
drainage. Conditions will worsen as filters become dirty.

C10691

As shipped, the unit’s condensate drain pan is NOT sloped
towards the drain connection. The pan slope must be
changed to pitch towards the side of the unit with the
drain connection. See Fig. 13. Loosen the 2 screws next to
the drain outlet at both ends of the unit, push drain pan
down in the slots near the drain connection, and up in the
slots on the opposite end. Re--tighten screws. The pan

1

should have a pitch of at least

/4--in. over its length

toward the drain connection.

14

Fan Motors and Drives -- Motor and drive packages are

A

factory installed in all units. The motor and drive
packages consist of the following items:

1 — fan motor

Install disconnect switch and power wiring in accordance
with all applicable local codes. See Fig. 14--16 and the

1

unit label diagram. Connect power wiring with

/4-- i n .

ring terminal.

1 — adjustable motor pulley
1—fanpulley
2 — matched fan belts (524J*25A--30A units)
For instructions on changing fan rotation, changing drive

speeds and adjusting drives, see Pulley and Drive
Adjustment in the Service section.

Power Supply and Wiring -- Check the unit data plate to
ensure that available power supply matches electrical
characteristics of the unit. Provide a disconnect switch
with an integrated lock--out feature of size required to
provide adequate fan motor starting current. See Tables
4--6 for unit electrical data.

!

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.

FAN SCROLL

MOTOR

ND DRIVE

CONDENSATE
DRAIN
CONNECTION
(HORIZONTAL)

FILTER
ELEMENTS

FILTER
RETAINER
CLIP

TXV — Thermostatic Expansion Valve

LEGEND

FAN
CONTACTOR
BOX

WIRE
ACCESS

FAN DRIVE
PULLEY

COIL

TXV BULB
ACCESS

REFRIGERANT
PIPING ACCESS

CONDENSATE
DRAIN
CONNNECTION
(VERTICAL)

C10693

Fig. 15 -- Wiring and Service Access

(Side Panel Removed)

Fan motors are factory--installed on all units. Indoor--fan
contactors are located in the fan contactor box behind the
side access panel (see Fig. 15 and 16). Wire the thermostat
to the 24--v control circuit terminal block located in the
side of the fan contactor control box, according to Fig. 17
or the unit label diagram. If the air handler is part of a
split system, complete the wiring from the condensing
unit to the thermostat shown in Fig. 17.

524J

!

WARNING

FIRE HAZARD

Failure to follow this warning could result in intermittent
operation or performance satisfaction.

Do not connect aluminum wire between disconnect
switch and fan coil unit. Use only copper wire.
(See Fig. 14)

ELECTRIC

DISCONNECT

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

FAN
CONTACTOR

24V
TERMINAL
BLOCK

POWER
WIRING
KNOCKOUT

Fig. 16 -- Fan Contactor Box and Terminal Block

A
J

VR
00

6

C

°

5
0
1

23

22

21

W

3

1

2

1

1

1

C10694

(Cover Removed) (Typical)

A93033

Fig. 14 -- Disconnect Switch and Unit

15

Table 4 – Electrical Data, Standard Motors

524J

UNIT V --- PH --- H z

208/230--- 3 --- 60 187--- 253 5.0 (3.73) 14.7/13.6 18.4/17.0 30/25

524J*25A
524J*25H

208/230--- 3 --- 60 187--- 253 7.5 (5.59) 21.4/19.4 26.9/24.3 45/40

524J*28A

208/230--- 3 --- 60 187--- 253 10.0 (7.46) 28.0/25.2 35.0/31.5 60/50

524J*30A

See Legend and Notes below.

UNIT V --- PH --- H z *

208/230--- 3 --- 60 187--- 253 7.5 (5.59) 21.4/19.4 26.9/24.3 45/40

524J*25A
524J*25H

208/230--- 3 --- 60 187--- 253 10.0 (7.46) 28.0/25.2 35.0/31.5 60/50

524J*28A
524J*30A

See Legend and Notes below.

{

VOLTAGE

LIMITS

FAN MOTOR POWER SUPPLY

Hp (kW) FLA

Minimum

Circuit Amps

MOCP

4 6 0 --- 3 --- 60 414---506 5.0 (3.73) 6.8 8.5 15

5 7 5 --- 3 --- 60 518---632 5.0 (3.73) 5.1 6.4 15

4 6 0 --- 3 --- 60 414---506 7.5 (5.59) 9.7 12.1 20

5 7 5 --- 3 --- 60 518---632 7.5 (5.59) 7.8 9.8 15

4 6 0 --- 3 --- 60 414---506 10.0 (7.46) 12.6 15.8 25

5 7 5 --- 3 --- 60 518---632 10.0 (7.46) 10.3 12.9 20

Table 5 – Electrical Data, Alternate Motors

VOLTAGE

LIMITS

4 6 0 --- 3 --- 60 414---506 7.5 (5.59) 9.7 12.1 20

5 7 5 --- 3 --- 60 518---632 7.5 (5.59) 7.8 9.8 15

4 6 0 --- 3 --- 60 414---506 10.0 (7.46) 12.6 15.8 25

5 7 5 --- 3 --- 60 518---632 10.0 (7.46) 10.3 12.9 20

FAN MOTOR POWER SUPPLY

Hp (kW) FLA

Minimum

Circuit Amps

MOCP

Legend and Notes for Tables 4 and 5

LEGEND:

F L A --- F u l l L o a d A m p s
MOCP --- Maximum Overcurrent Protection
{ Motors are designed for satisfactory operation within 10% of

normal voltage shown. Voltages should not exceed the limits
shown in the Voltage Limits column.

NOTES:

1. Minimum circuit amps (MCA) and MOCP values are calcu­lated in accordance with The NEC. Article 440.

2. Motor FLA values are established in accordance with Under­writers’ Laboratories (UL). Standard 1995.

3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply
voltage is greater than 2%. Use the formula in the example
(see column to the right) to determine the percentage of volt­age imbalance.

4. Installation with Accessory Electric Heaters
Size the Field Power Wiring between the heater TB1 and the
524J indoor fan motor per NEC Article 430 ---28 (1) or (2)
(depends on length of conduit between heater enclosure and
524J power entry location). Install wires in field ---installed
conduit.

Example: Supply voltage is 230-3-60

% Voltage Imbalance = 100 x

max voltage deviation from average voltage

average voltage

AB = 393 v
BC = 403 v
AC = 396 v

Average Voltage =

(393 + 403 + 396)

3

= 397

1192

=

3

Determine maximum deviation from average voltage.
(AB) 397 – 393 = 4 v
(BC) 403 – 397 = 6 v
(AC) 397 – 396 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

=1.5%

6

397

This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.

16

Fig. 17 -- Unit Wiring

524J

C10695

Table 6 – Fan Contactor Coil Data

UNIT

524J*

25A, 25H, 28A, 30A 24 10

VOLTAGE

(vac)

MAXIMUM

HOLDING VA

Connecting Ductwork -- Refer to the System Design
Manual for the recommended design and layout of
ductwork. Fig. 18 shows recommended duct connection to
units with 2 fans.

!

CAUTION

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment
damage.
Do not operate unit without ductwork or discharge
plenum unless fan speed has been adjusted for
external static pressure of zero in. wg. Failure to do so
may result in motor overload.

DISCHARGE CONNECTIONS — Duct flanges are
factory--supplied; they are shipped inside the unit attached
to the hairpin end of the coil tube sheet for field

installation. Using the existing screws, install the duct
flanges on the unit’s fan deck. Each fan discharge requires
2 flanges; each flange must be bent in the middle to
conform to the discharge opening. See Fig. 19. After
flanges are installed, connect them to the supply duct
using a canvas connection to prevent vibration. It is
important that this connection be properly fabricated to
prevent high air friction losses and air noise.

RETURN CONNECTIONS — When using return--air
ductwork, route return--air duct to the unit’s return air inlet
near the filter rack, using a canvas connection to prevent
transmission of unit vibration. If the duct blocks off the
unit’s access panel, provide a slip joint in the ductwork to
permit removal for servicing.

OUTDOOR--AIR INLET CONNECTIONS — Connect
outdoor--air inlet to field--installed accessory economizer.
Refer to Economizer Installation Instructions.

Return--Air Filters -- Type and size of filters are shown
in Tables 1A – 1D and are factory--supplied and
factory--installed. In all units with 2 fans, a filter
replacement tool (hook) is shipped inside the unit for field
use when replacing filters. See the Service section for
instructions on filter element replacement.

17

524J

C10696

Fig. 18 -- Typical Fan Discharge Connections for Multiple Fan Units

C10697

Fig. 19 -- Duct Flange Installation

18

START--UP

Before starting unit, check the following and correct as
necessary:

S Is unit solidly supported?
S Is fan adjusted for speed and pulley alignment?
S Are pulleys, motor, and bearings securely mounted?
S Are there any loose parts that will rattle or vibrate?
S Is condensate drain pan pitched for correct drainage?
S Are coil baffle plates tight against coil to prevent air

bypass?

S Are all panels securely fastened?
S Are all electrical connections correct and tight?
S Is TXV bulb located on suction tube per Fig. 20?
S Is the capillary tube to the bulb free of kinks and not

subject to pinching?

S Is the bulb well secured to the suction tube with strap?

2. To increase superheat, turn the stem clockwise. To de­crease the superheat, turn the stem counterclockwise.
Do not turn the stem more than one full turn.

3. Wait until suction pressure and superheat stabilize.
This may take more than 30 minutes.

4. Continue adjustment until superheat reaches 10_Fto
15_F (5.5_Cto8.3_C).

5. Replace the seal cap; tighten.

INSTALLER / INSTALLATEUR

TXV superheat must be checked at initial
unit start-up and adjusted if necessary.
Superheat must be 10 - 15 deg F.

La surchauffe TXV doit être vérifiée au
moment de la mise en route initiale et
ajustée si nécessaire. La surchauffe doit
être comprise entre 10 et 15 degrés F.

40RU500073 2.0

C10828

Fig. 21 -- Label, TXV Adjustment

524J

Also refer to condensing unit or outdoor heat pump section
instructions before starting a split system. A split system
start--up checklist is provided at the end of these instructions.

40RU500072 2.0

IMPORTANT! / IMPORTANT

TXV

UPPER SPLIT
BLOC SUPÉRIEUR

AIR FLOW
CIRCULATION
D'AIR

LOWER
SPLIT
BLOC
INFÉRIEUR

AIR FLOW

CIRCULATION

The sensor bulb capillary tubes must be routed from the TXVs inside the unit through one of the piping

access holes. Clamp the TXV sensor bulb on a vertical portion of the suction line, outside the unit.
See Fig. 7 in the installation, start-up and service instruction. Super heat must be adjusted in field.

Les tubes capillaires du capteur doivent être acheminé à partir du détendeur thermostatique situé à l'intérieur

de l'appareil au travers de l'un des trous d'accès de conduites. Attacher le capteur sur une portion verticale

de la conduite de succion, à l'extérieur de l'appareil. Voir la Figure 7 dans le manuel d'installation, de mise

SENSING
BULB
CAPTEUR TXV

10 DIAMS

15 DIAMS MIN

10 x DIA. MIN

15 x DIA. MIN

TXV SENSING
BULB
CAPTEUR TXV

D'AIR

15 DIAMS MIN

en marche, et d'entretien. La surchauffe doit être ajustée sur place.

15 x DIA. MIN

10 DIAMS

10 x DIA. MIN

Fig. 20 -- Label, TXV Bulb Location

EQUALIZER LINE
CONDUITE D'ÉQUILIBRAGE

TXV

8 DIAMS MIN
8 x DIA. MIN

TXV

8 DIAMS MIN
8 x DIA. MIN

SIGHT GLASS
HUBLOT

SOLENOID
VALVE
VANNE
SOLÉNOÏDE

DESSICCATEUR

EQUALIZER LINE

CONDUITE D'ÉQUILIBRAGE

INDOOR COIL
ÉCHANGEUR INTÉRIEUR

FILTER
DRIER
FILTRE

C10827

SERVICE

Inspection and maintenance should be performed at
regular intervals and should include the following:

S Complete cleaning of cabinet, fan wheel, cooling coil,

condensate pan and drain, heating coils, and return--air
grille (if present).

S Inspection of panels and sealing of unit against air

leakage.

S Adjustment of fan motor, belt, bearings, and wheels.
S Cleaning or replacement of filters.
S Testing for cooling/heating system leaks.
S Checking of all electrical connections.

!

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in 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.

Adjusting TXV for Superheat —

The unit--mounted thermostatic expansion valve(s) is/are
factory set to provided superheat at the bulb location in
10_Fto15_F (5.5_Cto8.3_C) range. Actual system load
conditions may require adjustment of the factory setting.
To adjust the TXV superheat setting:

1. Remove the seal cap from the bottom of the TXV

body.

Most unit service can be performed by removing one or
both of the unit’s side panels. Coil cleaning or removal or
insulation cleaning may require removal of a rear, top, or
bottom panel, depending on the unit’s orientation. When
service is completed, replace unit panels.

Panels -- Panels are fastened to unit frame with sheet
metal screws. Fan and coil compartment must be sealed
tightly after service to prevent air from bypassing the
cooling coil.

19

Fan Motor Lubrication -- Fan motor supplied with unit is
permanently lubricated and requires no further
lubrication.

Fan Shaft Bearings -- Size 25--30 units have pillow--block
bearings (Fig. 22) that must be lubricated with suitable
bearing grease approximately every 3 months. See Table 7
for suitable lubricants.

Table 7 – Lubricant Data

MANUFACTURER LUBRICANT

Mobil Mobilplex EP No. 2

Sunoco Prestige 42

Texaco Multifak 2

Texaco R e g a l A F B --- 2 *

*Preferred lubricant, contains rust and oxidation inhibitors.

524J

Centering Fan Wheel -- If fan and fan shaft assembly are
not properly centered, blades may scrape against the
blower side scroll plate or may create an objectionable
whistling noise. It may be necessary to adjust individual
fan wheels or move entire fan shaft. See the following two
sections.

Fan Shaft Position Adjustment -- Loosen setscrew or
locking collar of each fan shaft bearing. Slide shaft into
correct position and replace locking collar (Fig. 23). To
replace locking collar, push collar up against inner face of
bearing. Turn collar in direction of fan rotation until tight,
and tighten setscrew. Tightening locking collar in
direction of fan rotation results in further tightening of
collar should setscrew work itself loose.

C10698

Fig. 22 -- Fan Shaft, Bearings, and Fan Wheel (Typical)

C10699

Fig. 23 -- Fan Shaft Bearing

Fig. 24 -- Fan Motor Mounting

C10700

20

Individual Fan Wheel Adjustment -- Loosen the 2
locking bolts holding fan wheel hub to shaft. See Fig. 22.
Position fan wheel in center of the fan housing and tighten
locking bolts. Clearance between wheel and housing
should be the same on both sides.

Fan Belts -- Motor mounting plate and motor support
angles are slotted to permit both vertical and horizontal
adjustment. Adjust belt(s) for correct deflection by
loosening motor plate mounting bolts, moving motor/plate
assembly forward or back, and re--tightening bolts. Press
down on belt with one finger midway between fan and
motor pulleys to check deflection. The correct deflection

1

/8--in. (3.2 mm). See Fig. 24.

is

If complete belt replacement is required during servicing,
loosen the motor plate mounting bolts (Fig. 24), move
motor/plate assembly towards fan pulley, and pull belt(s)
off pulleys. Reverse the procedure with new bolts and
readjust deflection.

Fan Rotation -- Correct fan rotation with respect to fan
outlet is shown in Fig. 25.

C10701

Fig. 25 -- Fan Rotation

To reverse the direction of rotation of a 3--phase fan
motor, reverse any 2 of the power leads. Refer to the
connection diagram on the inside of motor terminal box
cover for proper reversing procedure of single--phase
motor.

Fan Pulley Alignment -- Align as follows:

1. Loosen setscrews on pulleys.

2. Align pulleys visually and tighten setscrews on fan
pulley to lock it in place.

3. Use the methods shown in Fig. 26 to check proper
pulley alignment.

4. If pulleys are not in correct alignment, loosen the mo­tor holddown bolts and slide the motor axially until
the pulleys are aligned.

5. Tighten motor holddown bolts.

C10702

Fig. 26 -- Fan Pulley Adjustments

Pulley and Drive Adjustment -- To obtain desired fan

speed, refer to the fan motor and drive data in Tables
8A--11D and adjust fan motor pulley as follows:

1. Remove belt from fan motor pulley after loosening
motor from motor base.

2. Loosen setscrew in moveable flange of pulley. Screw
moveable flange toward fixed flange to increase the
fan speed and away from fixed flange to reduce
speed. Before tightening setscrew, make certain that
setscrew is over nearest flat surface of pulley hub
(Fig. 26).

!

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment
damage.

Increasing fan speed produces a greater load on motor.
Do not exceed rated capacity of motor.

Condensate Drains -- Keep condensate drains free of dirt
and foreign matter.

Return--Air Filters -- Refer to Replacing Filters section
for filter accessibility and removal. Replace with clean
filters of the sizes listed in Tables 1A--1F.

S After draining as much water as possible from coils, add

sufficient antifreeze to prevent residual water in the coil
from freezing.

CAUTION

524J

S Add a sufficient quantity of non--corrosive antifreeze to

the entire system to prevent all water within the system
from freezing.

21

Coil Removal -- Remove unit panels and corner posts as
required. Disconnect coil connections and remove fastening
screws. Remove coil through end or side sections of unit.

Cleaning Cooling Coil -- Remove return--air filters.
Remove any heavy dirt that may have accumulated on
underside of coil. Coil can be cleaned more easily with a
stiff brush, vacuum cleaner, or compressed air when coil
is dry. If coil is wet or if water is to be used for cleaning,
guard against splashing water on electrical components or
damaging surrounding area. Clean coil baffles as
applicable and check for tight fit to be sure air does not
bypass coil.

Cleaning Insulation -- The insulation contains an
immobilized antimicrobial agent that helps prevent the
growth of bacteria and fungi. Clean the inner surface of
the insulation according to the separate maintenance
instructions shipped with the unit.

Replacing Filters -- Filters can be removed and installed

524J

from either side of the unit. Install new filters in units that
have one fan as follows:

1. Remove the side access panel (retain screws).

2. Remove the filter retainer clip (see Fig. 27).

3. Remove old filters by lifting and tilting them out of
the filter track. See Fig. 15 and 28. Use the factory-­supplied filter hook to slide filters within reach for re­moval. The filter hook is shipped inside the unit in
the filter track

4. Reverse the procedure to install new filters.

SLIDE

Fig. 27 -- Remove Filter Retainer Clip

FILTER
RETAINER
CLIP

C10703

!

CAUTION

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment
damage.

Do not operate unit without air filters.

C10704

Fig. 28 -- Filter Removal/Replacement

22

Table 8A -- Fan Motor Data, Standard Motor — English

UNIT

524J*25A
524J*25H

524J*28A 524J*30A

208/230--- 3 ---60 and 460 --- 3---60

Speed (rpm) 1745 1745 1745

Hp 5.0 7.5 10.0

Frame (NEMA) S184T S213T S215T

Shaft Dia (in.) 11/

8

13/

8

5 7 5 --- 3 --- 6 0

Speed (rpm) 1745 1755 1755

Hp 5.0 7.5 10.0

Frame (NEMA) 184T S213T D215T

Shaft Dia (in.) 11/

LEGEND
NEMA — National Electrical Manufacturers Association

8

13/

8

Table 8B -- Fan Motor Data, Alternate Motor — English

UNIT

208/230--- 3 ---60 and 460 --- 3---60

Speed (rpm) 1745 1745 1745

Hp 7.5 10.0 10.0

Frame (NEMA) S213T S215T S215T

Shaft Dia (in.) 13/

5 7 5 --- 3 --- 6 0

Speed (rpm) 1755 1750 1750

Hp 7.5 10.0 10.0

Frame (NEMA) S213T D215T D215T

Shaft Dia (in.) 13/

LEGEND

NEMA — National Electrical Manufacturers Association

524J*25A
524J*25H

8

8

524J*28A 524J*30A

13/

8

13/

8

13/

13/

13/

13/

8

8

524J

8

8

23

Table 8C -- Fan Motor Data, Standard Motor — SI

524J

UNIT

208/230--- 3 ---60 and 460 --- 3---60

Speed (r/s) 29.08 29.08 29.08

Shaft kW 3.73 5.60 7.46

Frame (NEMA) S184T S213T S215T

Shaft Dia (mm) 28.6 34.9 34.9

5 7 5 --- 3 --- 6 0

Speed (r/s) 29.08 29.25 29.25

Shaft kW 3.73 5.60 7.46

Frame (NEMA) 184T S213T S215T

Shaft Dia (mm) 28.6 34.9 34.9

LEGEND

NEMA — National Electrical Manufacturers Association

524J*25A
524J*25H

524J*28A 524J*30A

Table 8D -- Fan MotorData, Alternate Motor — SI

UNIT

208/230--- 3 ---60 and 460 --- 3---60

Speed (r/s) 29.08 29.17 29.17

Shaft kW 5.60 7.46 7.46

Frame (NEMA) S213T S215T S215T

Shaft Dia (mm) 34.9 34.9 34.9

5 7 5 --- 3 --- 6 0

Speed (r/s) 29.25 29.17 29.17

Shaft kW 5.60 7.46 7.46

Frame (NEMA) S213T D215T D215T

Shaft Dia (mm) 34.9 34.9 34.9

524J*25A
524J*25H

524J*28A 524J*30A

LEGEND
NEMA — National Electrical Manufacturers Association

24

Table 9A -- Standard Drive Data, 60 Hz — English

UNIT

524J*25A
524J*25H

524J*28A 524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.) 3.7 ---4.7 4.3---5.3 4.3--- 5.3

Pulley Factory Setting
Full Turns Open

3.0 3.0 3.0

FAN DRIVE

Pulley Pitch Dia (in.) 9.4 11.0 11.0

Pulley Bore (in.) 17/

16

Belt No. — Section 2—B 2—B

Belt Pitch (in.) 41.8

115/

16

(2) 42.8
(2) 43.8

115/

16

†

2—B

†

(2) 42.8
(2) 43.8

FAN SPEEDS (rpm)

Factory Setting 771 752 752

Range 679--- 863 682--- 841 674--- 831

Max Allowable Speed (rpm) 1200 1100 1100

Change per1/2Turn of
Moveable Motor Pulley

15.3 13.1 13.1

Flange

MAX FULL TURNS FROM
CLOSED POSITION

6 6 6

SHAFTS CENTER DISTANCE (in.) 9.12--- 10.99 6.67 --- 9.43 6.67 --- 9.43

†

Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

524J

Table 9B -- Medium--Static Drive Data, 60 Hz — English

UNIT

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.) 4.3 ---5.3 4.3---5.3 4.3--- 5.3

Pulley Factory Setting
Full Turns Open

FAN DRIVE

Pulley Pitch Dia (in.) 9.4 9.4 9.4

Pulley Bore (in.) 17/

Belt No. — Section 1—B 2—B

Belt Pitch (in.) 41.8

FAN SPEEDS (rpm)

Factory Setting 881 881 881

Range 798--- 984 798--- 984 798--- 984

Max Allowable Speed (rpm) 1200 1100 1100

Change per1/2Turn of
Moveable Motor Pulley
Flange

MAX FULL TURNS FROM
CLOSED POSITION

SHAFTS CENTER DISTANCE (in.) 9.16--- 10.99 6.67 --- 9.43 6.67 --- 9.43

†

Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

524J*25A
524J*25H

524J*28A 524J*30A

3.0 3.0 3.0

16

115/

16

†

(2) 38.8
(2) 39.8

15.3 15.3 15.3

6 6 6

115/

16

2—B

(2) 38.8
(2) 39.8

†

25

Table 9C -- High--Static Drive Data, 60 Hz — English

524J

UNIT

524J*25A
524J*25H

524J*28A 524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.) 4.3--- 5.3 4.3 --- 5.3 4.3 --- 5.3

Pulley Factory Setting
Full Turns Open

3.0 3.0 3.0

FAN DRIVE

Pulley Pitch Dia (in.) 7.4 8.6 8.6

Pulley Bore (in.) 17/

16

115/

16

115/

16

Belt No. — Section 2—B 2—B 2—B

Belt Pitch (in.) 36.8 378 37.8

FAN SPEEDS (rpm)

Factory Setting 1118 1024 1024
Range 1014 --- 1200Ă

†

873--- 1075 873 ---1075

Max Allowable Speed (rpm) 1200 1100 1100

Change per1/2Turn of
Moveable Motor Pulley

19.4 16.7 16.7

Flange

MAX FULL TURNS FROM
CLOSED POSITION

6 6 6

SHAFTS CENTER DISTANCE (in.) 8.16-- -10.02 6.67 --- 9.43 6.67---9.43

†

It is possible to adjust drive so that fan speed exceeds maximum all owable. DO NOT exceed 1200 rpm.

Table 9D-- Standard Drive Data, 60 Hz — SI

UNIT

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm) 94.0--- 119.4 109.2 ---134.6 109.2--- 134.6

Pulley Factory Setting
Full Turns Open

FAN DRIVE

Pulley Pitch Dia (mm) 239 279 279

Pulley Bore (mm) 36.5 49.2 49.2

Belt No. — Section 2—B 2—B

Belt Pitch (mm) 1062

FAN SPEEDS (r/s)

Factory Setting 12.9 12.5 12.5

Range 11.3--- 14.4 11.4 ---14.0 11.2- -- 13.9

Max Allowable Speed (r/s) 20.0 18.3 18.3

Change per1/2Turn of
Moveable Motor Pulley
Flange

MAX FULL TURNS FROM
CLOSED POSITION

SHAFTS CENTER DISTANCE (mm) 232 ---279 169--- 240 169 ---240

†

Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

524J*25A
524J*25H

524J*28A 524J*30A

3.0 3.0 3.0

†

(2) 1987
(2) 1113

0.255 0.218 0.218

6 6 6

†

2—B

(2) 1987
(2) 1113

26

Table 9E -- Medium--Static Drive Data, 60 Hz — SI

UNIT

524J*25A
524J*25H

524J*28A 524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm) 109.2--- 134.6 109.2--- 134.6 109.2 --- 134.6

Pulley Factory Setting
Full Turns Open

3.0 3.0 3.0

FAN DRIVE

Pulley Pitch Dia (mm) 239 239 239

Pulley Bore (mm) 36.5 49.2 49.2

Belt No. — Section 1—B 2—B

Belt Pitch (mm) 1062

(2) 986
(2) 1011

†

†

2—B

(2) 986
(2) 1011

FAN SPEEDS (r/s)

Factory Setting 14.7 14.7 14.7

Range 13.3 ---16.4 13.3--- 16.4 13.3 --- 16.4

Max Allowable Speed (r/s) 20.0 18.3 18.3

Change per1/2Turn of
Moveable Motor Pulley

0.255 0.255 0.255

Flange

MAX FULL TURNS FROM
CLOSED POSITION

6 6 6

SHAFTS CENTER DISTANCE (mm) 232--- 279 169 ---240 169- -- 240

†

Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

524J

Table 9F -- High--Static Drive Data, 60 Hz — SI

UNIT

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm) 109.2 ---134.6 109.2--- 134.6 109.2---134.6

Pulley Factory Setting
Full Turns Open

FAN DRIVE

Pulley Pitch Dia (mm) 188 203

Pulley Bore (mm) 36.5 49.2 49.2

Belt No. — Section 2—B 2—B 2—B

Belt Pitch (mm) 935 935 960

FAN SPEEDS (r/s)

Factory Setting 18.6 17.1 17.1

Range 16.9--- 20.0

Max Allowable Speed (r/s) 20.0 18.3 18.3

Change per1/2Turn of
Moveable Motor Pulley
Flange

MAX FULL TURNS FROM
CLOSED POSITION

SHAFTS CENTER DISTANCE (mm) 207 ---255 169--- 240 169 ---240

†

It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 20 r/s

524J*25A
524J*25H

524J*28A 524J*30A

3.0 3.0 3.0

†

†

14.6--- 17.9 14.6--- 7.9

0.323 0.278 0.278

6 6 6

203

27

Table 10A -- 524J Standard Fan Performance Data —

0.0--2.4 in. wg External Static Pressure — English

UNIT

524J*25A
524J*25H

524J*28A

524J

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(Cfm)

6,000 532 1.25 569 1.39 639 1.69 711 2.06 781 2.48 846 2.93 905 3.60

7,000 608 1.93 641 2.09 702 2.42 763 2.08 824 3.23 885 3.71 943 4.23

8,000 686 2.83 716 3.01 770 3.38 823 3.77 876 4.21 930 4.70 983 5.24

9,000 764 3.97 791 4.18 841 4.59 888 5.02 935 5.47 982 5.96 1030 6.51

10,000 843 5.38 868 5.62 914 6.09 957 6.55 1000 7.02 1042 7.53 1084 8.08

7,500 456 1.29 490 1.47 556 1.85 621 2.25 678 2.64 729 3.06 778 3.60

8,750 521 1.98 551 2.18 608 2.61 664 3.07 720 3.53 770 3.99 816 4.45

10,000 587 2.88 614 3.11 664 3.59 714 4.09 763 4.62 812 5.15 857 5.68

11,250 653 4.03 678 4.29 724 4.82 768 5.37 812 5.95 856 6.54 899 7.14

12,500 720 5.46 743 5.75 785 6.33 825 6.93 865 7.55 904 8.20 944 8.86

15,000 829 8.84 850 9.19 888 9.88 924 10.57 958 11.27 991 11.99 1024 12.73

9,000 521 1.99 550 2.25 616 2.77 676 3.23 731 3.72 782 4.20 829 4.70

10,500 596 3.16 623 3.40 672 3.89 720 4.40 767 4.94 814 5.50 859 6.05

12,000 673 4.63 698 4.90 743 5.45 785 6.02 826 6.62 867 7.23 908 7.87

13,500 751 6.51 773 6.82 815 7.44 853 8.06 890 8.71 927 9.38 963 10.07

15,000 829 8.84 850 9.19 888 9.88 924 10.57 958 11.27 991 11.99 1024 12.73

EXTERNAL STATIC PRESSURE (in. wg)

0.0 0.2 0.4 0.6 0.8 1.0 1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

Table 10A -- 524J Standard Fan Performance Data —

0.0--2.4 in. wg External Static Pressure — English (cont)

UNIT

524J*25A

524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(Cfm)

6,000 954 3.83 1005 4.27 1052 4.72 1098 5.22 1142 5.67 — —

7,000 990 4.74 1040 5.24 1090 5.80 1135 6.30 1176 6.84 — —

8,000 1028 5.79 1078 6.38 1130 7.00 1173 7.60 — — — —

9,000 1073 7.11 1120 7.72 1169 8.37 — — — — — —

10,000 1126 8.75 1166 9.37 — — — — — — — —

7,500 831 4.41 870 5.10 913 5.90 950 6.88 985 7.70 — —

8,750 859 4.97 901 5.59 944 6.42 980 7.20 1020 8.10 — —

10,000 900 6.20 939 6.74 976 7.33 1013 8.00 1050 8.82 — —

11,250 941 7.73 980 8.32 1017 8.90 1052 9.51 1088 10.16 — —

12,500 984 9.53 1022 10.19 1058 10.84 1093 11.49 — — — —

15,000 1057 13.49 1090 14.28 — — — — — — — —

9,000 866 5.20 899 5.85 950 6.65 989 7.38 1029 8.32 1077 9.74

10,500 902 6.60 942 7.14 980 7.70 1016 8.31 1051 8.99 1085 9.77

12,000 949 8.50 988 9.14 1026 9.76 1062 10.38 1095 11.01 — —

13,500 1000 10.78 1036 11.49 1073 12.21 — — — — — —

15,000 1057 13.49 1090 14.28 — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6 1.8 2.0 2.2 2.4

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

28

Table 10B -- 524J Standard Fan Performance Data —

0--600 kPa External Static Pressure — SI

UNIT

524J*25A

524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(L/s)

r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW

2830 8.86 0.94 9.48 1.04 10.65 1.26 11.84 1.53 13.01 1.85 14.10 2.19 15.08 2.53

3300 10.14 1.44 10.69 1.56 11.70 1.81 12.71 2.08 13.73 2.41 14.74 2.77 15.71 3.15

3780 11.43 2.11 11.93 2.25 12.84 2.52 13.71 2.81 14.60 3.14 15.49 3.51 16.39 3.91

4250 12.74 2.96 13.19 3.12 14.02 3.43 14.81 3.74 15.59 4.08 16.37 4.45 17.17 4.85

4720 14.05 4.01 14.47 4.19 15.23 4.54 15.96 4.88 16.66 5.24 17.36 5.62 18.07 6.03

3540 7.60 0.96 8.16 1.09 9.27 1.38 10.34 1.68 11.30 1.97 12.15 2.28 12.97 2.68

4130 8.68 1.47 9.18 1.62 10.13 1.94 11.07 2.29 11.99 2.63 12.84 2.97 13.60 3.32

4720 9.78 2.15 10.23 2.32 11.07 2.67 11.89 3.05 12.72 3.45 13.53 3.84 14.29 4.23

5310 10.89 3.01 11.30 3.20 12.06 3.59 12.80 4.00 13.53 4.43 14.27 4.88 14.99 5.33

5900 12.00 4.07 12.38 4.29 13.09 4.72 13.75 5.17 14.41 5.63 15.07 6.11 15.74 6.61

4250 8.68 1.48 9.17 1.68 10.27 2.07 11.27 2.41 12.19 2.77 13.03 3.13 13.81 3.50

4960 9.93 2.35 10.38 2.53 11.21 2.90 11.99 3.28 12.78 3.68 13.56 4.10 14.32 4.51

5660 11.21 3.45 11.63 3.66 12.38 4.07 13.08 4.49 13.76 4.93 14.45 5.39 15.14 5.87

6370 12.51 4.85 12.89 5.08 13.58 5.54 14.22 6.01 14.83 6.49 15.44 6.99 16.05 7.51

7080 13.82 6.59 14.17 6.85 14.81 7.36 15.40 7.88 15.97 8.40 16.52 8.94 17.06 9.49

EXTERNAL STATIC PRESSURE (kPa)

0 50 100 150 200 250 300

524J

Table 10B -- 524J Standard Fan Performance Data —

0--600 kPa External Static Pressure — SI (cont)

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(L/s)

2830 15.90 2.86 16.75 3.18 17.53 3.52 18.30 3.89 19.03 4.23 — —

3300 16.50 3.53 17.33 3.91 18.17 4.32 18.92 4.70 19.60 5.10 — —

3780 17.13 4.32 17.97 4.76 18.83 5.22 19.55 5.67 — — — —

4250 17.88 5.30 18.67 5.76 19.48 6.24 — — — — — —

4720 18.77 6.52 19.43 6.99 — — — — — — — —

3540 13.85 3.29 14.50 3.80 15.22 4.40 15.83 5.13 16.42 5.74 — —

4130 14.31 3.71 15.01 4.17 15.74 4.79 16.33 5.37 17.00 6.04 — —

4720 14.99 4.62 15.65 5.02 16.27 5.46 16.88 5.97 17.50 6.57 — —

5310 15.68 5.77 16.34 6.20 16.95 6.64 17.53 7.09 18.09 7.58 — —

5900 16.39 7.10 17.03 7.60 17.64 8.08 18.22 8.57 — — — —

4250 14.43 3.88 14.98 4.36 15.84 4.96 16.48 5.50 17.16 6.21 17.96 7.26

4960 15.04 4.92 15.71 5.32 16.33 5.74 16.93 6.20 17.51 6.70 18.09 7.29

5660 15.81 6.34 16.47 6.81 17.10 7.28 17.69 7.74 18.26 8.21 — —

6370 16.66 8.04 17.27 8.57 17.88 9.10 — — — — — —

7080 17.61 10.06 18.16 10.64 — — — — — — — —

EXTERNAL STATIC PRESSURE (kPa)

350 400 450 500 550 600

r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW

29

Table 10C -- 524J High--Capacity Fan Performance Data —

0.0--2.4 in. wg External Static Pressure — English

UNIT

524J*25A
524J*25H

524J*28A

524J

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(Cfm)

6,000 542 1.29 577 1042 646 1.72 716 2.09 785 2.51 849 2.95 907 3.40

7,000 620 1.99 652 2.15 711 2.48 771 2.85 831 3.28 890 3.76 947 4.27

8,000 700 2.92 728 3.10 781 3.46 833 3.85 885 4.29 938 4.78 990 5.32

9,000 781 4.10 806 4.30 854 4.71 900 5.13 946 5.58 993 6.08 1039 6.62

10,000 862 5.56 885 5.79 929 6.24 971 6.70 1012 7.18 1054 7.69 1096 8.24

7,500 476 1.39 510 1.58 579 1.99 644 2.40 701 2.81 752 3.29 804 3.96

8,750 545 2.14 574 2.35 633 2.81 691 3.29 747 3.77 797 4.25 842 4.76

10,000 615 3.12 641 3.36 692 3.87 743 4.41 794 4.96 843 5.51 888 6.05

11,250 685 4.37 709 4.64 754 5.20 800 5.79 845 6.40 891 7.02 935 7.64

12,500 756 5.92 778 6.22 819 6.83 860 7.47 901 8.14 942 8.83 983 9.52

9,000 539 2.18 569 2.39 626 2.85 683 3.34 739 3.83 791 4.32 837 4.82

10,500 620 3.37 646 3.62 695 4.13 744 4.68 793 5.25 842 5.83 888 6.41

12,000 701 4.94 724 5.22 769 5.80 811 6.40 854 7.04 897 7.69 940 8.36

13,500 783 6.95 804 7.27 844 7.91 883 8.57 920 9.26 958 9.97 996 10.71

15,000 865 9.45 884 9.81 921 10.52 956 11.24 991 11.98 1025 12.75 1059 13.54

0.0 0.2 0.4 0.6 0.8 1.0 1.2

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

EXTERNAL STATIC PRESSURE (in. wg)

Table 10C -- 524J High--Capacity Fan Performance Data —

0.0--2.4 in. wg External Static Pressure — English (cont)

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(Cfm)

6,000 961 3.86 1011 4.31 1058 4.77 1104 5.24 1147 5.71 — —

7,000 1000 4.79 1050 5.32 1097 5.85 1142 6.38 1184 6.91 — —

8,000 1041 5.88 1090 6.47 1137 7.07 1181 7.67 — — — —

9,000 1086 7.21 1133 7.82 1178 8.47 — — — — — —

10,000 1138 8.83 1180 9.46 — — — — — — — —

7,500 874 5.33 897 5.91 940 6.80 990 7.50 — — — —

8,750 886 5.36 930 6.13 982 7.32 1020 8.10 — — — —

10,000 930 6.60 969 7.20 1007 7.89 1045 8.71 — — — —

11,250 976 8.25 1014 8.86 1051 9.49 1086 10.17 — — — —

12,500 1023 10.20 1061 10.88 1097 11.56 — — — — — —

9,000 881 5.37 923 6.03 967 6.89 1020 8.25 — — — —

10,500 930 6.97 970 7.55 1008 8.17 1045 8.86 — — — —

12,000 981 9.02 1021 9.67 1058 10.32 1094 10.97 — — — —

13,500 1035 11.45 1072 12.20 — — — — — — — —

15,000 1093 14.35 — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

1.4 1.6 1.8 2.0 2.2 2.4

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

30

Table 10D -- 524J High--Capacity Fan Performance Data —

0--600 kPa External Static Pressure — SI

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(L/s)

r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW

2830 9.03 0.96 9.62 1.06 10.77 1.29 11.94 1.56 13.08 1087 14.15 2.20 15.12 2.54

3330 10.34 1.48 10.86 1.60 11.85 1.85 12.84 2.12 13.85 2.45 14.84 2.80 15.78 3.18

3780 11.67 2.17 12.14 2.31 13.02 2.58 13.88 2.87 14.75 3.20 15.63 3.56 16.50 3.96

4250 13.01 3.05 13.44 3.21 14.23 3.51 15.00 3.82 15.77 4.16 16.54 4.53 17.32 4.94

4720 14.36 4.15 14.75 4.32 15.48 4.66 16.18 4.99 16.87 5.35 17.56 5.73 18.26 6.14

3540 7.94 1.04 8.51 1.18 9.65 1.48 10.73 1.79 11.68 2.10 12.53 2.46 13.40 2.95

4130 9.08 1.59 9.57 1.75 10.55 2.10 11.52 2.46 12.45 2.81 13.28 3.17 14.04 3.55

4720 10.24 2.33 10.68 2.51 11.53 2.88 12.39 3.29 13.24 3.70 14.05 4.11 14.80 4.51

5310 11.42 3.26 11.81 3.46 12.57 3.88 13.33 4.32 14.09 4.77 14.85 5.24 15.58 570

5900 12.60 4.42 12.96 4.64 13.65 5.09 14.33 5.57 15.01 6.07 15.40 6.58 16.38 7.10

4250 8.99 1.62 9.49 1.78 10.44 2.12 11.39 2.49 12.32 2.86 13.18 3.22 13.95 3.59

4960 10.33 2.51 10.77 2.70 11.59 3.08 12.40 3.49 13.22 3.92 14.03 4.35 14.79 4.78

5660 11.68 3.68 12.07 3.90 12.81 4.33 13.52 4.77 14.23 5.25 14.95 5.74 15.66 6.23

6370 13.04 5.18 13.40 5.42 14.07 5.90 14.71 6.39 15.34 6.90 15.97 7.44 16.61 7.98

7080 14.42 7.05 14.74 7.31 15.36 7.84 15.94 8.38 16.51 8.93 17.08 9.51 17.65 10.10

EXTERNAL STATIC PRESSURE (kPa)

0 50 100 150 200 250 300

524J

Table 10D -- 524J High--Capacity Fan Performance Data —

0--600 kPa External Static Pressure — SI (cont)

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

See Legend and Notes on page 36.

AIRFLOW

(L/s)

2830 16.01 2.88 16.85 3.22 17.64 3.56 18.39 3.91 19.12 4.26 — —

3300 16.67 3.57 17.50 3.96 18.28 4.36 19.03 4.75 19.73 5.15 — —

3780 17.35 4.39 18.17 4.82 18.95 5.27 19.68 5.72 — — — —

4250 18.11 5.37 18.88 5.83 19.63 6.31 — — — — — —

4720 18.96 6.58 19.67 7.05 — — — — — — — —

3540 14.57 3.97 14.95 4.41 15.67 5.07 16.50 5.59 — — — —

4130 14.76 3.99 15.51 4.57 16.36 5.46 17.00 6.04 — — — —

4720 15.49 4.92 16.15 5.37 16.78 5.88 17.42 6.50 — — — —

5310 16.26 6.15 16.91 6.61 17.51 7.08 18.10 7.58 — — — —

5900 17.04 7.61 17.68 8.11 18.28 8.62 — — — — — —

4250 14.68 4.00 15.38 4.49 16.12 5.14 17.00 6.15 — — — —

4960 15.51 5.20 16.17 5.63 16.80 6.09 17.41 6.61 — — — —

5660 16.35 6.72 17.01 7.21 17.64 7.69 18.23 8.18 — — — —

6370 17.24 8.54 17.87 9.10 — — — — — — — —

7080 18.22 10.70 — — — — — — — — — —

EXTERNAL STATIC PRESSURE (kPa)

350 400 450 500 550 600

r/s kW r/s kW r/s kW r/s kW r/s kW r/s kW

31

Legend and Notes for Tables 10A and 10C

Bhp --- Brake Horsepower Input to Fan
ESP --- External Static Pressure

NOTES:

1. Maximum allowable f a n speed for size 25 units is 1200 rpm . Maximum
allowable fan speed for size 28 and 30 units is 1100 rpm.

2. Fan performance is based on deduct ions for wet coil, clean 2-in. filters,
and unit casing. See table at right for fact ory-s up pli ed filter pressure drop.

3. Refer to fan motor and drive tables for additional data.

LEGEND

Legend and Notes for Tables 10B and 10D

524J

ESP --- External Static Pressure

NOTES:

1. Maximumallowablefanspeedforsize25unitsis20r/s.Maximum
allowable fan speed f or size 28 and 30 units is 18.3 r/s.

2.Fanperformanceisbasedondeductionsforwetcoil,clean51---mm
filters, and unit casing. See table at right for factory-supplied filter
pressure drop.

3. Refer to fan motor and drive tables for additional data.

LEGEND

FACTORY-SUPPLIED PRESSURE DROP — ENGLISH

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

AIRFLOW

(Cfm)

6,000 0.12

8,000 0.19

10,000 0.26

7,500 0.15

10,000 0.22

12,500 0.30

9,000 0.19

12,000 0.29

15,000 0.40

PRESSURE DROP

(in. wg)

FACTORY-SUPPLIED PRESSURE DROP — SI

UNIT

524J*25A
524J*25H

524J*28A

524J*30A

AIRFLOW

(L/s)

2900 32

3800 47

4700 64

3500 36

4700 55

5900 76

4250 47

5650 71

7050 98

PRESSURE DROP

(Pa)

32

524J

33

524J

2011 Bryant Heating and Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Da te: 01/11

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

34

Catalog No: II524J---07

Replaces: II524J--- 05

START--UP CHECKLIST

(SPLIT SYSTEMS WITH 524J UNITS)

I. PRELIMINARY INFORMATION

OUTDOOR: MODEL NO. INDOOR: MODEL NO.
SERIAL NO. SERIAL NO.
ADDITIONAL ACCESSORIES

II. PRE--START--UP

OUTDOOR UNIT

IS THERE ANY SHIPPING DAMAGE? (Y/N)
IF SO, WHERE:

WILL THIS DAMAGE PREVENT UNIT START--UP? (Y/N)
CHECK POWER SUPPLY. DOES IT AGREE WITH UNIT? (Y/N)
HAS THE GROUND WIRE BEEN CONNECTED? (Y/N)
HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY? (Y/N)
ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY? (Y/N)
HAVE COMPRESSOR HOLDDOWN BOLTS BEEN LOOSENED? (Y/N)

CONTROLS

ARE THERMOSTAT(S) & INDOOR FAN CONTROL WIRING CONNECTIONS MADE & CHECKED? (Y/N)
ARE ALL WIRING TERMINALS (including main power supply) TIGHT? (Y/N)
HAVE OUTDOOR UNIT CRANKCASE HEATERS BEEN ENERGIZED FOR 24 HOURS? (Y/N)

INDOOR UNIT

HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE? (Y/N)
ARE PROPER AIR FILTERS IN PLACE? (Y/N)
HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT? (Y/N)
DO THE FAN BELTS HAVE PROPER TENSION? (Y/N)

PIPING

HAS FOAM SHIPPING BLOCK BEEN REMOVED FROM THE TXV (Thermostatic Expansion Valve)? (Y/N)

524J

ARE LIQUID LINE SOLENOID VALVES LOCATED AT THE INDOOR UNIT (524J***A) OR OUTDOOR UINT
(524J*25H) COILS AS REQUIRED? (Y/N)

HAVE LEAK CHECKS BEEN MADE AT COMPRESSORS, CONDENSERS, INDOOR COILS,
TXVs (Thermostatic Expansion Valves) SOLENOID VALVES, FILTER DRIERS, AND FUSIBLE PLUGS
WITH A LEAK DETECTOR? (Y/N)

LOCATE, REPAIR, AND REPORT ANY LEAKS
HAVE ALL COMPRESSOR SERVICE VALVES BEEN FULLY OPENED (BACKSEATED) (Y/N)
ARE THE COMPRESSOR OIL SIGHT GLASSES SHOWING CORRECT LEVELS? (Y/N)

35

CHECK VOLTAGE IMBALANCE

LINE-TO-LINE VOLTS: AB V AC V BC V
(AB + AC + BC)/3 = AVERAGE VOLTAGE = V
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE = V
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =

IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.

III. START--UP

CHECK INDOOR FAN MOTOR SPEED AND RECORD.

AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:

524J

COMP A1 COMP B1

OIL PRESSURE

SUCTION PRESSURE

SUCTION LINE TEMP

DISCHARGE PRESSURE

DISCHARGELINETEMP

ENTERING OUTDOOR UNIT AIR TEMP

LEAVING OUTDOOR UNIT AIR TEMP

INDOOR UNIT ENTERING AIR DB TEMP

INDOOR UNIT ENTERING AIR WB TEMP

INDOOR UNIT LEAVING AIR DB TEMP

INDOOR UNIT LEAVING AIR WB TEMP

COMPRESSOR AMPS (L1/L2/L3) ____/____/____ ____/____/____

CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES, ARE THE SIGHT GLASSES SHOWING

1

OIL LEVEL AT

/8to1/3FULL? (Y/N)

NOTES:

2011 Bryant Heating and Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Da te: 01/11

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

36

Catalog No: II524J---07

Replaces: II524J--- 05