Bryant Air Handling Units 524J User Manual

524J

PACKAGED AIR-HANDLING UNITS, 60 Hz

WITH PURON^R(R-410A) REFRIGERANT

SIZES 25, 28, 30

Installation, Start--Up

and Service Instructions

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

TABLE OF CONTENTS

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

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

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

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . 35-36

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

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

. When you see this symbol on the

unit and in instructions or manuals, be alert to the

potential for personal injury.

Understand the signal words DANGER, WARNING,

CAUTION, and NOTE. These words are used with the

safety-alert symbol. DANGER identifies the most serious

hazards which will result in severe personal injury or

death. WARNING signifies hazards which could result in

personal injury or death. CAUTION is used to identify

unsafe practices, which may result in minor personal

injury or product and property damage. NOTE is used to

highlight suggestions which will result in enhanced

installation, reliability, or operation.

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

UNIT 524J*

25A

28A

30A

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

Base Unit with TXV

Plenum

730

225

1050

325

1062

325

FANS

Qty...Diam. (in.)

2...15

8000

2...18

10000

2...18

12000

Nominal Airflow (cfm)

Airflow Range (cfm)

Nominal Motor Hp (Standard Motor)

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

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

6000 – 10000

7500 – 12500

9000 – 15000

5.0

7.5

10.0

Motor Speed (rpm)

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

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

1745

1755

1745

1755

REFRIGERANT

R---410A

Operating charge (lb)

(approx per circuit)*

3.5

4.5

5.0

DIRECT---EXPANSION COIL

Max Working Pressure (psig)

Face Area (sq ft)

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

650

19.88

24.86

29.83

No. of Splits

No. of Circuits per Split

Split Type...Percentage

Rows...Fins/in.

Face...50/50

4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF)

DX Coil — Liquid Refrigerant (ODF)

Steam Coil, In (MPT)

2...1 /

2... /

1...2 /

Steam Coil, Out (MPT)

Hot Water Coil, In (MPT)

Hot Water Coil, Out (MPT)

Condensate (PVC)

1... /

1...2

1...1 / ODM/1 IDF

FILTERS

Throwaway — Factory Supplied

4...16 x 20 x 2

4...16 x 24 x 2

4...20 x 24 x 2

4...20 x 25 x 2

Quantity...Size (in.)

Access Location

STEAM COIL**

Either Side

Max Working Pressure (psig at 260° F)

Total Face Area (sq ft)

Rows...Fins/in.

13.33

1...10

15.0

1...10

15.0

1...10

HOT WATER COIL**

Max Working Pressure (psig)

Total Face Area (sq ft)

Rows...Fins/in.

150

15.0

13.33

15.0

2...8.5

2...12.5

Water Volume

(gal)

13.9

14.3

1.90

(ft )

LEGEND

DX — Direct Expansion

TXV— Thermostatic Expansion Valve

Units are shipped without refrigerant charge.

Field installed accessory only.

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

UNIT 524J*

25A

28A

30A

NOMINAL CAPACITY (kW)

OPERATING WEIGHT (kg)

Base Unit with TXV

Plenum

105

331

102

477

148

482

148

FANS

Qty...Diam. (mm)

2...381

3775

2...457

4119

2...457

5663

Nominal Airflow (L/s)

Airflow Range (L/s)

Nominal Motor kW (Standard Motor)

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

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

2831 – 4719

3539 – 5899

4247 – 7079

3.73

5.60

7.46

Motor Speed (r/s)

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

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

29.1

29.3

29.1

29.3

REFRIGERANT

R---410A

Operating charge (kg)

(approx per circuit)*

1.59

2.04

2.27

DIRECT---EXPANSION COIL

Max Working Pressure (kPag)

Face Area (sq m)

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

4481

1.85

2.30

2.77

No. of Splits

No. of Circuits per Split

Split Type...Percentage

Rows...Fins/m

Face...50/50

4...591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF)

DX Coil — Liquid Refrigerant (ODF)

Steam Coil, In (MPT)

2...1 /

2... /

1...2 /

Steam Coil, Out (MPT)

Hot Water Coil, In (MPT)

Hot Water Coil, Out (MPT)

Condensate (PVC)

1... /

1...2

1...1 / ODM/1 IDF

FILTERS

Throwaway — Factory Supplied

4...406 x 508 x 51

4...406 x 610 x 51

4...508 x 610 x 51

4...508 x 635 x 51

Either Side

Quantity...Size (mm.)

Access Location

STEAM COIL**

Max Working Pressure (kPag at 126° C)

Total Face Area (sq m)

Rows...Fins/m

138

1.39

1.24

1.39

1...394

HOT WATER COIL**

Max Working Pressure (kPag)

Total Face Area (sq m)

Rows...Fins/m

1034

1.39

1.24

1.39

2...335

Water Volume

(L)

52.6

54.1

(m )

0.052

0.054

LEGEND

DX — Direct Expansion

TXV— Thermostatic Expansion Valve

Units are shipped without refrigerant charge.

Field installed accessory only.

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

UNIT 524J*

25H

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (lb)

Base Unit with TXV

Plenum

720

140

FANS

Qty...Diam. (in.)

2...15

8000

Nominal Airflow (cfm)

Airflow Range (cfm)

Nominal Motor Hp (Standard Motor)

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

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

6000---10000

5.0

Motor Speed (rpm)

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

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

1745

REFRIGERANT

R---410A

3.5/3.5

Operating charge (lb)

(approx per circuit)*

DIRECT---EXPANSION COIL

Max Working Pressure (psig)

Face Area (sq ft)

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

650

19.9

No. of Splits

No. of Circuits per Split

Split Type...Percentage

Rows...Fins/in.

Face....50/50

4...15

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF)

DX Coil — Liquid Refrigerant (ODF)

Steam Coil, In (MPT)

2...1

2...

1...2

1...1

Steam Coil, Out (MPT)

Hot Water Coil, In (MPT)

Hot Water Coil, Out (MPT)

Condensate (PVC)

1...2

1...1 ODM/1 IDF

FILTERS

Throwaway — Factory Supplied

Quantity...Size (in.)

4...16 x 20 x 2

4...16 x 24 x 2

Access Location

Right or Left Side

STEAM COIL**

Max Working Pressure (psig at 260° F)

Total Face Area (sq ft)

Rows...Fins/in.

13.33

1...10

HOT WATER COIL**

Max Working Pressure (psig)

Total Face Area (sq ft)

Rows...Fins/in.

150

13.33

2...8.5

Water Volume

(gal)

13.9

1.85

(ft )

LEGEND

DX — Direct Expansion

TXV— Thermostatic Expansion Valve

Units are shipped without refrigerant charge.

Field installed accessory only.

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

UNIT 524J*

25H

NOMINAL CAPACITY (kW)

OPERATING WEIGHT (kg)

Base Unit with TXV

Plenum

326

FANS

Qty...Diam. (mm)

2...381

3775

Nominal Airflow (L/s)

Airflow Range (L/s)

Nominal Motor kW (Standard Motor)

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

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

2831---4719

3.73

Motor Speed (r/s)

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

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

29.1

REFRIGERANT

R---410A

1.59/1.59

Operating charge (kg)

(approx per circuit)*

DIRECT---EXPANSION COIL

Max Working Pressure (kPag)

Face Area (sq m)

Enhanced Copper Tubes, Aluminum Sine---Wave Fins

4482

1.85

No. of Splits

No. of Circuits per Split

Split Type...Percentage

Fins/m

Face...50/50

591

PIPING CONNECTIONS,

Quantity...Size (in.)

DX Coil — Suction (ODF)

DX Coil — Liquid Refrigerant (ODF)

Steam Coil, In (MPT)

2...1

2...

1...2

1...1

Steam Coil, Out (MPT)

Hot Water Coil, In (MPT)

Hot Water Coil, Out (MPT)

Condensate (PVC)

1...2

1...1 ODM/1 IDF

FILTERS

Throwaway — Factory Supplied

4...406 x 610 x 51

4...406 x 508 x 51

Quantity...Size (mm)

Access Location

Right or Left Side

STEAM COIL**

Max Working Pressure (kPag at 126° C)

Total Face Area (sq m)

Rows...Fins/m

138

1.24

1...394

HOT WATER COIL**

Max Working Pressure (kPag)

Total Face Area (sq m)

Rows...Fins/m

1034

1.24

2...335

Water Volume

(L)

52.6

(m )

0.052

LEGEND

DX — Direct Expansion

TXV— Thermostatic Expansion Valve

Units are shipped without refrigerant charge.

Field installed accessory only.

LEGEND

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

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.

UNIT WEIGHT

UNIT

lb (kg)

524J*25A

524J*25H

730 (331)

720 (326)

C10834

Fig. 1 - Dimensions – Size 25

LEGEND

TXV — Thermostatic Expansion Valve

NOTES:

1. Dimensions in [ ] are in millimeters.

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

UNIT

lb (kg)

524J*28A

524J*30A

1050 (477)

1062 (482)

C10835

Fig. 2 - Dimensions – Sizes 28 and 30

10 11 12 13 14 15 16 17

0 A A A

____

_____________

Model Type

Packaging

524J = Bryant Fan Coil

Puronr R---410A Refrigerant

A = Standard

Not Used

A = Not Used

Voltage

E = 460/3/60

P = 208/230/3/60

T = 575/3/60

Service Options

A = None

B = Painted Cabinet

Nominal Tonnage

25 = 20 Tons

28 = 25 Tons

30 = 30 Tons

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

Type of Coil

A = Standard DX Coil

B = High Capacity DX Coil

H = DX Coil for Heat Pump Duty

Coil Options

A = Al/Cu

Not Used

0 = Not Used

Not Used

0 = Not Used

C10837

Fig. 3 - Model Number Nomenclature

POSITION NUMBER

TYPICAL

POSITION

1−2

DESIGNATES

Week of manufacture (fiscal calendar)

3−4

Year of manufacture (“10” = 2010)

Manufacturing location (G = ETP, Texas, USA)

Sequential number

6−10

C!0725

Fig. 4 - Serial Number Nomenclature

TXV

COIL

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

CONDENSATE

DRAIN

REMOVE FOAM BLOCK

LEGEND

Accessory Line

Alternate Air Intake and Discharge

TXV — Thermostatic Expansion Valve

C10683

Air Intake and Discharge

Fig. 5 - Foam Block Location

Note: Maintain recommended clearances

per Fig. 1 and Fig. 2

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

C10684

Fig. 6 - Typical Unit Positioning

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

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 SIZE 25

OVERHEAD SUSPENSION ACCESSORY — UNIT SIZES 28, 30

NOTE: Dimensions in [ ] are millimeters

C10728

Fig. 7 - Preferred Suspension Technique

Unit Isolation - Where extremely quiet operation is

essential, install isolators between floor and base of unit,

or between ceiling and top section of unit.

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.

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.

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.

IMPORTANT: Do not bury refrigerant piping

underground.

External TXV equalizer connections are provided and

factory-brazed into the coil suction manifolds.

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.

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.

C10838

FIELD--FABRICATED HOLE DIAMATERS

in. (mm)

FIELD--FABRICATED HOLE POSITION DIMENSIONS

in. (mm)

USE HOLE

NUMBERS

UNIT

No. 5

No. 6

No. 7

—

524J*25A, 28A, 30A

524J*25H

1,2, 3, 4

—

3*, 5, 6, 7

1 / (28.6)

1 / (44.5)

3.25 (82.6)

6.125 (155.6)

10.38 (263.7)

*Must be enlarged from 1 / in. (28.6mm) to 1 / in. (44.5mm)

N OTE : A cce ss ho l e k no ck o ut s 1 --- 4 a re f a ct o ry --- sup p l i e d .

Fig. 8 - Refrigerant Piping Access Holes

EQUALIZER LINE

TXV

UPPER

SPLIT

SENSING

BULB

SOLENOID

VALVE

SIGHT

GLASS

TXV

AIRFLOW

15 DIAMS

MIN

DIAMS

8 DIAMS

MIN

EQUALIZER

FILTER

DRIER

LINE

TXV

SENSING

BULB

LOWER

SPLIT

TXV

AIRFLOW

15 DIAMS

MIN

DIAMS

8 DIAMS

MIN

INDOOR

COIL

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.

C10726

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

LEGEND

TXV — Thermostatic Expansion Valve

NOTE: The 8 o’clock position is shown above.

FIRST ON/LAST OFF = B

VERTICAL INSTALLATION

C10689

Fig. 11 - TXV Sensing Bulb Location

FIRST ON/LAST OFF = A

HORIZONTAL INSTALLATION

C10688

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

Table 2 – Factory-Installed Nozzle and Distributor Data

FEEDER TUBES

PER DISTRIBUTOR

Qty...Size (in.)

COIL TYPE

STD

TXV

Qty...Part No.

DISTRIBUTOR

Qty...Part No.

NOZZLE

Qty...Part No.

]

UNIT

524J*25A

524J*28A

524J*30A

524J*25H

4 Row

2 . . . B B IZ E --- 8 --- G A

2 . . . B B IZ E --- 1 5 --- G A

2 . . . B B IZ E --- 1 2 . 5 --- G A

2...D196---18--- /

2...1126

18... /

2...G6

2...C15

2...C17

2...G8

20... /

2...1126

24... /

2...113---12--- /

2 --- 1 2 . . . /

]

Feeder tube size is

in. (6.35 mm).

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

Table 3 – Fitting Requirements

]

†

UNIT

ACCESS HOLE NO.

CONNECTION TYPE

CIRCUIT

FITTINGS REQUIRED (in.)

1 / Street Elbow

1 / Nipple, 7 /

Suction

Lower

Upper

1 / Long Radius Elbow

Street Elbow

Nipple, 6 /

Liquid

Long Radius Elbow

Street Elbow

524J*25A

Nipple, 9 /

Long Radius Elbow

1 / Nipple, 5 /

1 / Long Radius Elbow

Suction

Upper

1 / Nipple, 11 L

1 / Long Radius Elbow

1 / Nipple, 3 L

Suction

Lower

11/ Long Radius Elbow

Nipple, 2 / L

45_ Elbow

Nipple, 1 / L

Long Radius Elbow

Nipple, 2 / L

524J*25H

45_ Elbow

Liquid

Upper

Nipple, 4 / L

Long Radius Elbow

1 / Nipple, 5 L

1 / 45_ Elbow

Suction

1 / Nipple, 8 /

1 / Long Radius Elbow

1 / Street Elbow

1 / Nipple, 11 L

Suction

Liquid

Lower

Upper

1 / Long Radius Elbow

Street Elbow

Nipple, 1 /

Long Radius Elbow

Street Elbow

524J*28A

Nipple, 19 /

Long Radius Elbow

1 / Nipple, 4 /

1 / Long Radius Elbow

Suction

Upper

1 / Nipple, 23 /

1 / Long Radius Elbow

]

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.

Table 3 — Fitting Requirement (cont)

]

†

UNIT

ACCESS HOLE NO.

CONNECTION TYPE

CIRCUIT

FITTINGS REQUIRED (in.)

1 / Street Elbow

1 / Nipple, 3 L

Suction

Lower

1 / Long Radius Elbow

Street Elbow

Nipple, 7 /

Liquid

Lower

Upper

Long Radius Elbow

Street Elbow

524J*30A

Nipple, 18 /

Long Radius Elbow

1 / Nipple, 4 /

1 / Long Radius Elbow

Suction

Upper

1 / Nipple, 19 /

1 / Long Radius Elbow

]

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.

Condensate Drain - Install a trapped condensate drain line

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.

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.

3” MIN.

[76]

C10692

Fig. 13 - Drain Pan Slope Adjustment

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

should have a pitch of at least ¹/₄-in. over its length

toward the drain connection.

NOTE: Dimensions in [ ] are in millimeters

C10691

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.

Fan Motors and Drives - Motor and drive packages are

factory installed in all units. The motor and drive

packages consist of the following items:

Install disconnect switch and power wiring in accordance

with all applicable local codes. See Fig. 14-16 and the

unit label diagram. Connect power wiring with /₄- i n .

ring terminal.

1 — fan motor

1 — adjustable motor pulley

1 — fan pulley

FAN SCROLL

FAN

CONTACTOR

BOX

MOTOR

WIRE

AND DRIVE

2 — matched fan belts (524J*25A-30A units)

ACCESS

For instructions on changing fan rotation, changing drive

speeds and adjusting drives, see Pulley and Drive

Adjustment in the Service section.

FAN DRIVE

PULLEY

CONDENSATE

DRAIN

CONNECTION

(HORIZONTAL)

COIL

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.

FILTER

TXV BULB

ACCESS

ELEMENTS

REFRIGERANT

PIPING ACCESS

FILTER

RETAINER

CLIP

CONDENSATE

DRAIN

CONNNECTION

(VERTICAL)

WARNING

ELECTRICAL SHOCK HAZARD

LEGEND

Failure to follow this warning could result in personal

injury or death.

TXV — Thermostatic Expansion Valve

C10693

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.

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.

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)

FAN

CONTACTOR

24V

TERMINAL

BLOCK

ELECTRIC

DISCONNECT

SWITCH

POWER

WIRING

COPPER

KNOCKOUT

WIRE ONLY

C10694

Fig. 16 - Fan Contactor Box and Terminal Block

(Cover Removed) (Typical)

ALUMINUM

WIRE

A93033

Fig. 14 - Disconnect Switch and Unit

Table 4 – Electrical Data, Standard Motors

FAN MOTOR

VOLTAGE

POWER SUPPLY

{

UNIT

V --- P H --- H z

Minimum

LIMITS

Hp (kW)

FLA

MOCP

Circuit Amps

18.4/17.0

8.5

208/230---3---60

4 6 0 --- 3 --- 6 0

187---253

414---506

518---632

187---253

414---506

518---632

187---253

414---506

518---632

5.0 (3.73)

7.5 (5.59)

10.0 (7.46)

14.7/13.6

6.8

30/25

524J*25A

524J*25H

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

5.1

6.4

208/230---3---60

4 6 0 --- 3 --- 6 0

21.4/19.4

9.7

26.9/24.3

12.1

45/40

524J*28A

524J*30A

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

7.8

9.8

208/230---3---60

4 6 0 --- 3 --- 6 0

28.0/25.2

12.6

35.0/31.5

15.8

60/50

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

10.3

12.9

See Legend and Notes below.

Table 5 – Electrical Data, Alternate Motors

FAN MOTOR

VOLTAGE

POWER SUPPLY

UNIT

V --- P H --- H z *

Minimum

LIMITS

Hp (kW)

FLA

MOCP

Circuit Amps

208/230---3---60

4 6 0 --- 3 --- 6 0

187---253

414---506

518---632

187---253

414---506

518---632

7.5 (5.59)

10.0 (7.46)

21.4/19.4

9.7

26.9/24.3

12.1

45/40

524J*25A

524J*25H

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

7.8

9.8

208/230---3---60

4 6 0 --- 3 --- 6 0

28.0/25.2

12.6

35.0/31.5

15.8

60/50

524J*28A

524J*30A

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

10.3

12.9

See Legend and Notes below.

Legend and Notes for Tables 4 and 5

LEGEND:

Example: Supply voltage is 230-3-60

F L A

--- Fu ll L o a d A m p s

max voltage deviation from average voltage

average voltage

MOCP --- Maximum Overcurrent Protection

% Voltage Imbalance = 100 x

{

Motors are designed for satisfactory operation within 10% of

normal voltage shown. Voltages should not exceed the limits

shown in the Voltage Limits column.

AB = 393 v

BC = 403 v

AC = 396 v

NOTES:

1. Minimum circuit amps (MCA) and MOCP values are calcu-

lated in accordance with The NEC. Article 440.

(393 + 403 + 396)

1192

Average Voltage =

2. Motor FLA values are established in accordance with Under-

writers’ Laboratories (UL). Standard 1995.

397

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 volt-

age imbalance.

Determine maximum deviation from average voltage.

(AB) 397 – 393 = 4 v

(BC) 403 – 397 = 6 v

(AC) 397 – 396 = 1 v

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.

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance

= 100 x

= 1.5%

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.

C10695

Fig. 17 - Unit Wiring

Table 6 – Fan Contactor Coil Data

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.

UNIT

524J*

VOLTAGE

(vac)

MAXIMUM

HOLDING VA

25A, 25H, 28A, 30A

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.

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.

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.

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.

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

C10696

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

C10697

Fig. 19 - Duct Flange Installation

2. To increase superheat, turn the stem clockwise. To de-

crease 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.

START--UP

Before starting unit, check the following and correct as

necessary:

S Is unit solidly supported?

4. Continue adjustment until superheat reaches 10_F to

15_F (5.5_C to 8.3_C).

5. Replace the seal cap; tighten.

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?

INSTALLER / INSTALLATEUR

TXV superheat must be checked at initial

unit start-up and adjusted if necessary.

Superheat must be 10 - 15 deg F.

S Are coil baffle plates tight against coil to prevent air

bypass?

La surchauffe TXV doit être vérifiée au

moment de la mise en route initiale et

ajustée si nécessaire. La surchauffe doit

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?

être comprise entre 10 et 15 degrés F.

40RU500073 2.0

S Is the capillary tube to the bulb free of kinks and not

subject to pinching?

C10828

Fig. 21 - Label, TXV Adjustment

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

SERVICE

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.

Inspection and maintenance should be performed at

regular intervals and should include the following:

40RU500072 2.0

IMPORTANT! / IMPORTANT

EQUALIZER LINE

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

condensate pan and drain, heating coils, and return-air

grille (if present).

TXV

CONDUITE D'ÉQUILIBRAGE

SENSING

BULB

UPPER SPLIT

BLOC SUPÉRIEUR

SIGHT GLASS

HUBLOT

CAPTEUR TXV

S Inspection of panels and sealing of unit against air

AIR FLOW

CIRCULATION

D'AIR

leakage.

TXV

15 DIAMS MIN

10 DIAMS

10 x DIA. MIN

15 x DIA. MIN

SOLENOID

VALVE

S Adjustment of fan motor, belt, bearings, and wheels.

S Cleaning or replacement of filters.

8 DIAMS MIN

DIA. MIN

VANNE

SOLÉNOÏDE

LOWER

SPLIT

FILTER

DRIER

FILTRE

BLOC

TXV SENSING

BULB

CAPTEUR TXV

INFÉRIEUR

DESSICCATEUR

S Testing for cooling/heating system leaks.

S Checking of all electrical connections.

TXV

AIR FLOW

CIRCULATION

D'AIR

EQUALIZER LINE

15 DIAMS MIN

15 x DIA. MIN 10 x DIA. MIN

10 DIAMS

CONDUITE D'ÉQUILIBRAGE

DIAMS MIN

DIA. MIN

INDOOR COIL

ÉCHANGEUR INTÉRIEUR

WARNING

ELECTRICAL SHOCK HAZARD

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

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

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.

C10827

Fig. 20 - Label, TXV Bulb Location

Adjusting TXV for Superheat —

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.

The unit-mounted thermostatic expansion valve(s) is/are

factory set to provided superheat at the bulb location in

10_F to 15_F (5.5_C to 8.3_C) range. Actual system load

conditions may require adjustment of the factory setting.

To adjust the TXV superheat setting:

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.

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

body.

Fan Motor Lubrication - Fan motor supplied with unit is

permanently lubricated and requires no further

lubrication.

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 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.

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.

Table 7 – Lubricant Data

MANUFACTURER

Mobil

LUBRICANT

Mobilplex EP No. 2

Prestige 42

Sunoco

Texaco

Multifak 2

Texaco

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

*Preferred lubricant, contains rust and oxidation inhibitors.

C10699

Fig. 23 - Fan Shaft Bearing

C10698

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

C10700

Fig. 24 - Fan Motor Mounting

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

is ¹/₈-in. (3.2 mm). See Fig. 24.

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.

C10702

Fig. 26 - Fan Pulley Adjustments

Fan Rotation - Correct fan rotation with respect to fan

outlet is shown in Fig. 25.

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).

C10701

Fig. 25 - Fan Rotation

CAUTION

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.

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.

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.

Condensate Drains - Keep condensate drains free of dirt

and foreign matter.

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

pulley alignment.

4. If pulleys are not in correct alignment, loosen the mo-

tor holddown bolts and slide the motor axially until

the pulleys are aligned.

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.

5. Tighten motor holddown bolts.

S Add a sufficient quantity of non-corrosive antifreeze to

the entire system to prevent all water within the system

from freezing.

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.

FILTER

RETAINER

CLIP

SLIDE

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

from either side of the unit. Install new filters in units that

have one fan as follows:

C10703

Fig. 27 - Remove Filter Retainer Clip

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 re-

moval. The filter hook is shipped inside the unit in

the filter track

4. Reverse the procedure to install new filters.

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

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

Speed (rpm)

1745

5.0

1745

7.5

1745

10.0

Frame (NEMA)

Shaft Dia (in.)

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

S184T

S213T

S215T

1 /

Speed (rpm)

1745

5.0

1755

7.5

1755

10.0

Frame (NEMA)

Shaft Dia (in.)

184T

S213T

D215T

1 /

LEGEND

NEMA — National Electrical Manufacturers Association

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

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

Speed (rpm)

1745

7.5

1745

10.0

1745

10.0

Frame (NEMA)

Shaft Dia (in.)

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

S213T

S215T

1 /

Speed (rpm)

1755

7.5

1750

10.0

1750

10.0

Frame (NEMA)

Shaft Dia (in.)

S213T

D215T

1 /

LEGEND

NEMA — National Electrical Manufacturers Association

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

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

Speed (r/s)

29.08

3.73

29.08

5.60

29.08

7.46

Shaft kW

Frame (NEMA)

Shaft Dia (mm)

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

S184T

28.6

S213T

34.9

S215T

34.9

Speed (r/s)

29.08

3.73

29.25

5.60

29.25

7.46

Shaft kW

Frame (NEMA)

Shaft Dia (mm)

184T

28.6

S213T

34.9

S215T

34.9

LEGEND

NEMA — National Electrical Manufacturers Association

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

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

Speed (r/s)

29.08

5.60

29.17

7.46

29.17

7.46

Shaft kW

Frame (NEMA)

Shaft Dia (mm)

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

S213T

34.9

S215T

34.9

S215T

34.9

Speed (r/s)

29.25

5.60

29.17

7.46

29.17

7.46

Shaft kW

Frame (NEMA)

Shaft Dia (mm)

S213T

34.9

D215T

34.9

D215T

34.9

LEGEND

NEMA — National Electrical Manufacturers Association

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.)

3.7---4.7

3.0

4.3---5.3

3.0

4.3---5.3

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (in.)

Pulley Bore (in.)

Belt No. — Section

9.4

11.0

1 /

2—B

41.8

2—B^†

(2) 42.8

(2) 43.8

(2) 42.8

(2) 43.8

Belt Pitch (in.)

FAN SPEEDS (rpm)

Factory Setting

Range

771

679---863

1200

752

682---841

1100

752

674---831

1100

Max Allowable Speed (rpm)

Change per

Turn of

Moveable Motor Pulley

Flange

15.3

13.1

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (in.)

9.12---10.99

6.67---9.43

†

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.)

4.3---5.3

3.0

4.3---5.3

3.0

4.3---5.3

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (in.)

Pulley Bore (in.)

Belt No. — Section

9.4

1 /

1—B

41.8

2—B^†

(2) 38.8

(2) 39.8

(2) 38.8

(2) 39.8

Belt Pitch (in.)

FAN SPEEDS (rpm)

Factory Setting

Range

881

798---984

1200

881

798---984

1100

881

798---984

1100

Max Allowable Speed (rpm)

Change per

Turn of

Moveable Motor Pulley

Flange

15.3

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (in.)

9.16---10.99

6.67---9.43

†

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (in.)

4.3---5.3

3.0

4.3---5.3

3.0

4.3---5.3

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (in.)

Pulley Bore (in.)

Belt No. — Section

Belt Pitch (in.)

FAN SPEEDS (rpm)

Factory Setting

Range

7.4

8.6

1 /

2—B

36.8

2—B

378

2—B

37.8

1118

1014---1200Ă^†

1200

1024

873---1075

1100

1024

873---1075

1100

Max Allowable Speed (rpm)

Change per

Turn of

Moveable Motor Pulley

Flange

19.4

16.7

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (in.)

8.16---10.02

6.67---9.43

†

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm)

94.0---119.4

3.0

109.2---134.6

3.0

109.2---134.6

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (mm)

Pulley Bore (mm)

Belt No. — Section

239

36.5

2—B

279

49.2

279

49.2

2—B^†

(2) 1987

(2) 1113

(2) 1987

(2) 1113

Belt Pitch (mm)

1062

FAN SPEEDS (r/s)

Factory Setting

Range

12.9

11.3---14.4

20.0

12.5

11.4---14.0

18.3

12.5

11.2---13.9

18.3

Max Allowable Speed (r/s)

Change per / Turn of

Moveable Motor Pulley

Flange

0.255

0.218

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (mm)

232---279

169---240

†

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm)

109.2---134.6

3.0

109.2---134.6

3.0

109.2---134.6

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (mm)

Pulley Bore (mm)

Belt No. — Section

239

36.5

1—B

239

49.2

239

49.2

2—B^†

(2) 986

(2) 1011

(2) 986

(2) 1011

Belt Pitch (mm)

1062

FAN SPEEDS (r/s)

Factory Setting

Range

14.7

13.3---16.4

20.0

14.7

13.3---16.4

18.3

14.7

13.3---16.4

18.3

Max Allowable Speed (r/s)

Change per / Turn of

Moveable Motor Pulley

Flange

0.255

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (mm)

232---279

169---240

†

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

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

524J*25A

524J*25H

UNIT

524J*28A

524J*30A

MOTOR DRIVE

Motor Pulley Pitch Diameter (mm)

109.2---134.6

3.0

109.2---134.6

3.0

109.2---134.6

3.0

Pulley Factory Setting

Full Turns Open

FAN DRIVE

Pulley Pitch Dia (mm)

Pulley Bore (mm)

Belt No. — Section

Belt Pitch (mm)

FAN SPEEDS (r/s)

Factory Setting

Range

188

36.5

2—B

935

203^†

49.2

2—B

935

203

49.2

2—B

960

18.6

16.9---20.0^†

20.0

17.1

14.6---17.9

18.3

17.1

14.6---7.9

18.3

Max Allowable Speed (r/s)

Change per

Turn of

Moveable Motor Pulley

Flange

0.323

0.278

MAX FULL TURNS FROM

CLOSED POSITION

SHAFTS CENTER DISTANCE (mm)

207---255

169---240

†

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

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

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

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

UNIT

Rpm

532

608

686

764

843

456

521

587

653

720

829

521

596

673

751

829

Bhp

1.25

1.93

2.83

3.97

5.38

1.29

1.98

2.88

4.03

5.46

8.84

1.99

3.16

4.63

6.51

8.84

Rpm

569

641

716

791

868

490

551

614

678

743

850

550

623

698

773

850

Bhp

1.39

2.09

3.01

4.18

5.62

1.47

2.18

3.11

4.29

5.75

9.19

2.25

3.40

4.90

6.82

9.19

Rpm

639

702

770

841

914

556

608

664

724

785

888

616

672

743

815

888

Bhp

1.69

2.42

3.38

4.59

6.09

1.85

2.61

3.59

4.82

6.33

9.88

2.77

3.89

5.45

7.44

9.88

Rpm

711

763

823

888

957

621

664

714

768

825

924

676

720

785

853

924

Bhp

2.06

2.08

3.77

5.02

6.55

2.25

3.07

4.09

5.37

6.93

10.57

3.23

4.40

6.02

8.06

10.57

Rpm

781

824

876

935

1000

678

720

763

812

865

958

731

767

826

890

958

Bhp

2.48

3.23

4.21

5.47

7.02

2.64

3.53

4.62

5.95

7.55

11.27

3.72

4.94

6.62

8.71

11.27

Rpm

846

885

930

982

1042

729

770

812

856

904

991

782

814

867

927

991

Bhp

2.93

3.71

4.70

5.96

7.53

3.06

3.99

5.15

6.54

8.20

11.99

4.20

5.50

7.23

9.38

11.99

Rpm

905

943

983

1030

1084

778

816

857

899

944

1024

829

859

908

963

1024

Bhp

3.60

4.23

5.24

6.51

8.08

3.60

4.45

5.68

7.14

8.86

12.73

4.70

6.05

7.87

10.07

12.73

6,000

7,000

524J*25A

524J*25H

8,000

9,000

10,000

7,500

8,750

10,000

11,250

12,500

15,000

9,000

524J*28A

524J*30A

10,500

12,000

13,500

15,000

See Legend and Notes on page 36.

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

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

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

1.4

1.6

1.8

2.0

2.2

2.4

UNIT

Rpm

Bhp

3.83

4.74

5.79

7.11

8.75

4.41

4.97

6.20

7.73

9.53

13.49

5.20

6.60

8.50

10.78

13.49

Rpm

1005

1040

1078

1120

1166

870

Bhp

4.27

5.24

6.38

7.72

9.37

5.10

5.59

6.74

8.32

10.19

14.28

5.85

7.14

9.14

11.49

14.28

Rpm

1052

1090

1130

1169

—

Bhp

4.72

5.80

7.00

8.37

—

Rpm

1098

1135

1173

—

Bhp

5.22

6.30

7.60

—

Rpm

Bhp

Rpm

Bhp

—

6,000

7,000

954

990

1142

1176

—

5.67

6.84

—

524J*25A

524J*25H

8,000

1028

1073

1126

831

—

9,000

—

10,000

7,500

—

913

5.90

6.42

7.33

8.90

10.84

—

950

980

1013

1052

1093

—

6.88

7.20

8.00

9.51

11.49

—

985

1020

1050

1088

—

7.70

8.10

8.82

10.16

—

8,750

859

901

944

—

10,000

11,250

12,500

15,000

9,000

900

939

976

—

524J*28A

524J*30A

941

980

1017

1058

—

984

1022

1090

899

—

1057

866

—

950

6.65

7.70

9.76

12.21

—

989

1016

1062

—

7.38

8.31

10.38

—

1029

1051

1095

—

8.32

8.99

11.01

—

1077

1085

—

9.74

9.77

—

10,500

12,000

13,500

15,000

902

942

980

949

988

1026

1073

—

1000

1057

1036

1090

—

See Legend and Notes on page 36.

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

0--600 kPa External Static Pressure — SI

EXTERNAL STATIC PRESSURE (kPa)

AIRFLOW

(L/s)

100

150

200

250

300

UNIT

r/s

2830

3300

3780

4250

4720

3540

4130

4720

5310

5900

4250

4960

5660

6370

7080

8.86

0.94

1.44

2.11

2.96

4.01

0.96

1.47

2.15

3.01

4.07

1.48

2.35

3.45

4.85

6.59

9.48

1.04

1.56

2.25

3.12

4.19

1.09

1.62

2.32

3.20

4.29

1.68

2.53

3.66

5.08

6.85

10.65

11.70

12.84

14.02

15.23

9.27

1.26

1.81

2.52

3.43

4.54

1.38

1.94

2.67

3.59

4.72

2.07

2.90

4.07

5.54

7.36

11.84

12.71

13.71

14.81

15.96

10.34

11.07

11.89

12.80

13.75

11.27

11.99

13.08

14.22

15.40

1.53

2.08

2.81

3.74

4.88

1.68

2.29

3.05

4.00

5.17

2.41

3.28

4.49

6.01

7.88

13.01

13.73

14.60

15.59

16.66

11.30

11.99

12.72

13.53

14.41

12.19

12.78

13.76

14.83

15.97

1.85

2.41

3.14

4.08

5.24

1.97

2.63

3.45

4.43

5.63

2.77

3.68

4.93

6.49

8.40

14.10

14.74

15.49

16.37

17.36

12.15

12.84

13.53

14.27

15.07

13.03

13.56

14.45

15.44

16.52

2.19

2.77

3.51

4.45

5.62

2.28

2.97

3.84

4.88

6.11

3.13

4.10

5.39

6.99

8.94

15.08

15.71

16.39

17.17

18.07

12.97

13.60

14.29

14.99

15.74

13.81

14.32

15.14

16.05

17.06

2.53

3.15

3.91

4.85

6.03

2.68

3.32

4.23

5.33

6.61

3.50

4.51

5.87

7.51

9.49

10.14

11.43

12.74

14.05

7.60

10.69

11.93

13.19

14.47

8.16

524J*25A

524J*25H

8.68

9.18

10.13

11.07

12.06

13.09

10.27

11.21

12.38

13.58

14.81

9.78

10.23

11.30

12.38

9.17

524J*28A

524J*30A

10.89

12.00

8.68

9.93

10.38

11.63

12.89

14.17

11.21

12.51

13.82

See Legend and Notes on page 36.

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

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

EXTERNAL STATIC PRESSURE (kPa)

450 500

AIRFLOW

350

400

550

600

UNIT

(L/s)

r/s

2.86

3.53

4.32

5.30

6.52

3.29

3.71

4.62

5.77

7.10

3.88

4.92

6.34

8.04

10.06

r/s

3.18

3.91

4.76

5.76

6.99

3.80

4.17

5.02

6.20

7.60

4.36

5.32

6.81

8.57

10.64

r/s

3.52

4.32

5.22

6.24

—

r/s

3.89

4.70

5.67

—

r/s

—

2830

3300

15.90

16.50

17.13

17.88

18.77

13.85

14.31

14.99

15.68

16.39

14.43

15.04

15.81

16.66

17.61

16.75

17.33

17.97

18.67

19.43

14.50

15.01

15.65

16.34

17.03

14.98

15.71

16.47

17.27

18.16

17.53

18.17

18.83

19.48

—

18.30

18.92

19.55

—

19.03

19.60

—

4.23

5.10

—

524J*25A

524J*25H

3780

—

4250

—

4720

3540

4130

—

15.22

15.74

16.27

16.95

17.64

15.84

16.33

17.10

17.88

—

4.40

4.79

5.46

6.64

8.08

4.96

5.74

7.28

9.10

—

15.83

16.33

16.88

17.53

18.22

16.48

16.93

17.69

—

5.13

5.37

5.97

7.09

8.57

5.50

6.20

7.74

—

16.42

17.00

17.50

18.09

—

5.74

6.04

6.57

7.58

—

4720

5310

5900

4250

4960

5660

6370

7080

—

524J*28A

524J*30A

—

17.16

17.51

18.26

—

6.21

6.70

8.21

—

17.96

18.09

—

7.26

7.29

—

See Legend and Notes on page 36.

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

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

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

UNIT

Rpm

542

620

700

781

862

476

545

615

685

756

539

620

701

783

865

Bhp

1.29

1.99

2.92

4.10

5.56

1.39

2.14

3.12

4.37

5.92

2.18

3.37

4.94

6.95

9.45

Rpm

577

652

728

806

885

510

574

641

709

778

569

646

724

804

884

Bhp

1042

2.15

3.10

4.30

5.79

1.58

2.35

3.36

4.64

6.22

2.39

3.62

5.22

7.27

9.81

Rpm

646

711

781

854

929

579

633

692

754

819

626

695

769

844

921

Bhp

1.72

2.48

3.46

4.71

6.24

1.99

2.81

3.87

5.20

6.83

2.85

4.13

5.80

7.91

10.52

Rpm

716

771

833

900

971

644

691

743

800

860

683

744

811

883

956

Bhp

2.09

2.85

3.85

5.13

6.70

2.40

3.29

4.41

5.79

7.47

3.34

4.68

6.40

8.57

11.24

Rpm

785

831

885

946

1012

701

747

794

845

901

739

793

854

920

991

Bhp

2.51

3.28

4.29

5.58

7.18

2.81

3.77

4.96

6.40

8.14

3.83

5.25

7.04

9.26

11.98

Rpm

849

890

938

993

1054

752

797

843

891

942

791

842

897

958

1025

Bhp

2.95

3.76

4.78

6.08

7.69

3.29

4.25

5.51

7.02

8.83

4.32

5.83

7.69

9.97

12.75

Rpm

907

947

990

1039

1096

804

842

888

935

983

837

888

940

996

1059

Bhp

3.40

4.27

5.32

6.62

8.24

3.96

4.76

6.05

7.64

9.52

4.82

6.41

8.36

10.71

13.54

6,000

7,000

524J*25A

524J*25H

8,000

9,000

10,000

7,500

8,750

10,000

11,250

12,500

9,000

524J*28A

524J*30A

10,500

12,000

13,500

15,000

See Legend and Notes on page 36.

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

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

EXTERNAL STATIC PRESSURE (in. wg)

1.8 2.0

AIRFLOW

(Cfm)

1.4

1.6

2.2

2.4

UNIT

Rpm

961

Bhp

3.86

4.79

5.88

7.21

8.83

5.33

5.36

6.60

8.25

10.20

5.37

6.97

9.02

11.45

14.35

Rpm

1011

1050

1090

1133

1180

897

Bhp

4.31

5.32

6.47

7.82

9.46

5.91

6.13

7.20

8.86

10.88

6.03

7.55

9.67

12.20

—

Rpm

1058

1097

1137

1178

—

Bhp

4.77

5.85

7.07

8.47

—

Rpm

1104

1142

1181

—

Bhp

5.24

6.38

7.67

—

Rpm

Bhp

Rpm

Bhp

—

6,000

7,000

1147

1184

—

5.71

6.91

—

1000

1041

1086

1138

874

524J*25A

524J*25H

8,000

9,000

—

10,000

7,500

8,750

—

940

6.80

7.32

7.89

9.49

11.56

6.89

8.17

10.32

—

990

1020

1045

1086

—

7.50

8.10

8.71

10.17

—

886

930

982

—

10,000

11,250

12,500

9,000

930

969

1007

1051

1097

967

—

524J*28A

524J*30A

976

1014

1061

923

—

1023

881

—

1020

1045

1094

—

8.25

8.86

10.97

—

10,500

12,000

13,500

15,000

930

970

1008

1058

—

981

1021

1072

—

1035

1093

—

See Legend and Notes on page 36.

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

0--600 kPa External Static Pressure — SI

EXTERNAL STATIC PRESSURE (kPa)

AIRFLOW

(L/s)

100

150

200

250

300

UNIT

r/s

1087

2.45

3.20

4.16

5.35

2.10

2.81

3.70

4.77

6.07

2.86

3.92

5.25

6.90

8.93

r/s

2.54

3.18

3.96

4.94

6.14

2.95

3.55

4.51

570

2830

3330

3780

4250

4720

3540

4130

4720

5310

5900

4250

4960

5660

6370

7080

9.03

0.96

1.48

2.17

3.05

4.15

1.04

1.59

2.33

3.26

4.42

1.62

2.51

3.68

5.18

7.05

9.62

1.06

1.60

2.31

3.21

4.32

1.18

1.75

2.51

3.46

4.64

1.78

2.70

3.90

5.42

7.31

10.77

11.85

13.02

14.23

15.48

9.65

1.29

1.85

2.58

3.51

4.66

1.48

2.10

2.88

3.88

5.09

2.12

3.08

4.33

5.90

7.84

11.94

12.84

13.88

15.00

16.18

10.73

11.52

12.39

13.33

14.33

11.39

12.40

13.52

14.71

15.94

1.56

2.12

2.87

3.82

4.99

1.79

2.46

3.29

4.32

5.57

2.49

3.49

4.77

6.39

8.38

13.08

13.85

14.75

15.77

16.87

11.68

12.45

13.24

14.09

15.01

12.32

13.22

14.23

15.34

16.51

14.15

14.84

15.63

16.54

17.56

12.53

13.28

14.05

14.85

15.40

13.18

14.03

14.95

15.97

17.08

2.20

2.80

3.56

4.53

5.73

2.46

3.17

4.11

5.24

6.58

3.22

4.35

5.74

7.44

9.51

15.12

15.78

16.50

17.32

18.26

13.40

14.04

14.80

15.58

16.38

13.95

14.79

15.66

16.61

17.65

10.34

11.67

13.01

14.36

7.94

10.86

12.14

13.44

14.75

8.51

524J*25A

524J*25H

9.08

9.57

10.55

11.53

12.57

13.65

10.44

11.59

12.81

14.07

15.36

10.24

11.42

12.60

8.99

10.68

11.81

12.96

9.49

524J*28A

524J*30A

7.10

3.59

4.78

6.23

7.98

10.10

10.33

11.68

13.04

14.42

10.77

12.07

13.40

14.74

See Legend and Notes on page 36.

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

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

EXTERNAL STATIC PRESSURE (kPa)

AIRFLOW

350

400

450

500

550

600

UNIT

(L/s)

r/s

2.88

3.57

4.39

5.37

6.58

3.97

3.99

4.92

6.15

7.61

4.00

5.20

6.72

8.54

10.70

r/s

3.22

3.96

4.82

5.83

7.05

4.41

4.57

5.37

6.61

8.11

4.49

5.63

7.21

9.10

—

r/s

3.56

4.36

5.27

6.31

—

r/s

18.39

19.03

19.68

—

3.91

4.75

5.72

—

r/s

—

2830

3300

16.01

16.67

17.35

18.11

18.96

14.57

14.76

15.49

16.26

17.04

14.68

15.51

16.35

17.24

18.22

16.85

17.50

18.17

18.88

19.67

14.95

15.51

16.15

16.91

17.68

15.38

16.17

17.01

17.87

—

17.64

18.28

18.95

19.63

—

19.12

19.73

—

4.26

5.15

—

524J*25A

524J*25H

3780

4250

—

4720

3540

4130

—

15.67

16.36

16.78

17.51

18.28

16.12

16.80

17.64

—

5.07

5.46

5.88

7.08

8.62

5.14

6.09

7.69

—

16.50

17.00

17.42

18.10

—

5.59

6.04

6.50

7.58

—

4720

5310

5900

4250

4960

5660

6370

7080

—

524J*28A

524J*30A

—

17.00

17.41

18.23

—

6.15

6.61

8.18

—

See Legend and Notes on page 36.

Legend and Notes for Tables 10A and 10C

UNIT

LEGEND

Bhp --- Brake Horsepower Input to Fan

ESP --- External Static Pressure

NOTES:

FACTORY-SUPPLIED PRESSURE DROP — ENGLISH

AIRFLOW

(Cfm)

PRESSURE DROP

(in. wg)

1. Maximum allowable fan speed for size 25 units is 1200 rpm . Maximum

allowable fan speed for size 28 and 30 units is 1100 rpm.

6,000

8,000

0.12

0.19

0.26

0.15

0.22

0.30

0.19

0.29

0.40

2. Fan performance is based on deductions for wet coil, clean 2-in. 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.

524J*25A

524J*25H

10,000

7,500

10,000

12,500

9,000

524J*28A

524J*30A

12,000

15,000

Legend and Notes for Tables 10B and 10D

FACTORY-SUPPLIED PRESSURE DROP — SI

LEGEND

ESP --- External Static Pressure

NOTES:

AIRFLOW

(L/s)

PRESSURE DROP

(Pa)

UNIT

1. Maximum allowable fan speed for size 25 units is 20 r/s. Maximum

allowable fan speed for size 28 and 30 units is 18.3 r/s.

2900

3800

4700

3500

4700

5900

4250

5650

7050

2. Fan performance is based on deductions for wet coil, clean 51---mm

filters, and unit casing. See table at right for factory-supplied filter

pressure drop.

524J*25A

524J*25H

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

524J*28A

524J*30A

Catalog No: II524J---07

2011 Bryant Heating and Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231

Printed in U.S.A.

Edition Date: 01/11

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

Replaces: II524J---05

START--UP CHECKLIST

(SPLIT SYSTEMS WITH 524J UNITS)

I. PRELIMINARY INFORMATION

OUTDOOR: MODEL NO.

SERIAL NO.

INDOOR: MODEL 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)

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)

CHECK VOLTAGE IMBALANCE

LINE-TO-LINE VOLTS:

(AB + AC + BC)/3 = AVERAGE VOLTAGE =

MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =

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:

COMP A1

COMP B1

OIL PRESSURE

SUCTION PRESSURE

SUCTION LINE TEMP

DISCHARGE PRESSURE

DISCHARGE LINE TEMP

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

OIL LEVEL AT ¹/₈to ¹/₃FULL? (Y/N)

NOTES:

Catalog No: II524J---07

2011 Bryant Heating and Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231

Printed in U.S.A.

Edition Date: 01/11

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

Replaces: II524J---05

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