Bryant 575J Dimensions and installation guide

575J

HEAT PUMP CONDENSING UNITS, 60 Hz

WITH PURONR(R--410A) REFRIGERANT

SIZES 07, 08 and 12

Installation, Start--Up

and Service Instructions

CONTENTS

SAFETY CONSIDERATIONS 2....................

INSTALLATION GUIDELINES 3..................

INSTALLATION 7 -- 16...........................

Step 1 -- Plan for Unit Location 7..................

Step 2 -- Complete Pre--Installation Checks 8.........

Step3–PrepareUnitMounting Support 8...........

Step 4 -- Rig and Mount the Unit 8.................

Step 5 -- Complete Refrigerant Piping Connections 8...

Step 6 -- Install Accessories 12....................

Step 7 -- Complete Electrical Connections 12.........

Step 8 -- Wind Baffles for Low Ambient Control 17...

PRE-START-UP 18...............................

System Checks 18..............................

Turn On Crankcase Heaters 18....................

Preliminary Charge 18...........................

START--UP 18-- 27..............................

575J Units 18..................................

OPERATING SEQUENCE 28......................

Indoor (Supply) Fan 28..........................

Cooling Unit Without Economizer 28...............

Cooling Unit With Economizer 29.................

Defrost Cycle 29...............................

Supplemental Heating/Emergency Heating 30........

Cooling and Heating Shutdown 30.................

ROUTINE SYSTEM MAINTENANCE 30............

Quarterly Inspection

(and 30 days after initial start) 30..................

SERVICE 31 - 44................................

Refrigeration System 31.........................

Compressor Oil 31..............................

Servicing Systems on Roofs

with Synthetic Materials 31.......................

Liquid Line Filter Driers 31.......................

Field Refrigerant Access Ports 31..................

Outdoor Coil Metering Devices 31.................

Refrigerant System Pressure Access Ports 32.........

Compressor Protection 32........................

Crankcase Heater 32............................

Commercial Defrost Board 32.....................

Comfort Alert Diagnostic Module 40...............

Lubrication 41.................................

Outdoor Coil Maintenance and

Cleaning Recommendations 42....................

Service Parts 44................................

Fastener Torque Values 44........................

TROUBLESHOOTING 45.........................

APPENDIX A

Air Conditioner and Heat Pump with PuronR–

Quick Reference Guide 46........................

APPENDIX B

Wiring Diagram List 46..........................

APPENDIX C

Low Ambient Option — Factory Installed 47.........

START--UP CHECKLIST 51 -- 52...................

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.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal

injury or death.

Before performing service or maintenance operations

on unit, turn off main power switch to unit and install

lock(s) and lockout tag(s). Ensure electrical service to

rooftop unit agrees with voltage and amperage listed

on the unit rating plate. Unit may have more than one

power switch.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

injury, death and/or equipment damage.

PuronR(R--410A) refrigerant systems operate at

higher pressures than standard R--22 systems. Do not

use R--22 service equipment or components on Puron

refrigerant equipment.

!WARNING

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Wear safety glasses and gloves when handling

refrigerants. Keep torches and other ignitions sources

away from refrigerants and oils.

!WARNING

CUT HAZARD

Failure to follow this caution may result in personal

injury.

Sheet metal parts may have sharp edges or burrs. Use

care and wear appropriate protective clothing, safety

glasses and gloves when handling parts and servicing

575J units.

CAUTION

575J

INSTALLATION GUIDELINE

Replacement /Retrofit – R22 to Puron

Split system heat pumps are intended to be installed with

matching indoor sections only. The 575J heat pump

outdoor units are matched only with same-size 524J***H

indoor sections. Existing R-22 indoor coils cannot be

converted to PuronRR-410A heat pump duty. Only the

existing refrigerant piping is a candidate for retrofit use.

Acid test – If the existing system is being replaced

because of a compressor electrical failure, assume acid is

in system. If system is being replaced for any other

reason, use an approved acid test kit to determine acid

level. If even low levels of acid are detected, install a 100

percent activated alumina suction line filter drier in

addition to the replacement liquid-line filter drier. Operate

this system in COOLING ONLY. Remove the suction line

filter drier as soon as possible, with a maximum of 72 hr

of operation.

Recommendation: Install a ball valve in the liquid line at

the filter drier location when installing a suction filter in

the suction line.

Evaluate existing refrigerant piping – Reuse of existing

refrigerant piping involves three issues: quality (strength) of

existing tubing, cleanliness and tube size. R--410A operates

at pressures that are 50 to 70% higher than the operating

pressures in R--22 systems. It is important that the existing

piping set be in excellent physical condition to be considered

suitable for re--use with R--410A. If the physical condition of

the existing piping set is not excellent, then remove the

existing piping and replace with new piping. Refer to Step 5

for a discussion on selecting pipe sizes for these 575J heat

pumps; refer to Table 2 for recommended pipe sizes.

If the existing piping set is suitable for re--use with

R--410A based on its condition, determine the relative

locations and elevation differences between outdoor

section (575J) and indoor section (524J***H) and then

check the sizes of the existing lines against the

recommended pipe sizes in Table 2 and the MAXIMUM

vapor riser pipe size use data in Table 3. Do not use pipe

sizes that exceed these maximum vapor riser sizes as oil

return at part load conditions in vertical rises may be an

issue. Replace any riser sections with reduced pipe sizes

if existing pipe sizes exceed these maximum tube size

limits.

Installation –

1. Remove the existing evaporator coil or fan coil and

install the replacement coil.

2. Drain oil from low points and traps in vapor line

tubing if they were not replaced.

3. Remove the existing outdoor unit. Install the new out-

door unit according to these installation instructions.

4. Flush the interconnection piping system with dry

Nitrogen to eliminate as much trace of mineral oil as

possible.

5. Install the factory-supplied liquid-line filter drier at

the indoor coil just upstream of the TXV.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment

damage or improper operation.

Never install suction--line filter drier in the liquid--line

of a PuronRsystem.

CAUTION

6. If required, install a 100% activated alumina suction

line filter drier at the outdoor unit.

7. Evacuate and charge the system according to the in-

structions in this installation manual.

8. Operate the system for 10 hr. In COOLING MODE

ONLY. Monitor the pressure drop across the suction

line filter drier. If pressure drop exceeds 3 psig

(21kPa), replace suction-line and liquid-line filter

driers. Be sure to purge system with dry nitrogen and

evacuate when replacing filter driers. Continue to

monitor the pressure drop across suction-line filter

drier. Repeat filter changes is necessary. Never leave

suction-line filter drier in system longer than 72 hr

(actual time).

Rated Indoor Airflow (cfm)

The table below lists the rated indoor airflow used for the

AHRI efficiency rating for the units covered in this

document.

575J***A/B/D/E with 524J***H

Model Numbers Full Load Airflow (cfm)

575J*07A/B --- 524J*07H 2400

575J*07G/H --- 524J*07H 2400

575J*08A/B --- 524J*08H 3000

575J*12A/B --- 524J*12H 3000

575J*12G/H --- 524J*12H 3000

575J

UNIT

Standard

Weight

Corner

DCenter of Gravity Unit Height

575J*07

444 201 134 61 97 44 90 41 123 56 23

[584]

[660]

[330]

42-3/8

[1076]

575J*08

483 219 162 74 110 50 85 39 125 57 20

[508]

[610]

[330]

42-3/8

[1076]

575J*12

575 261 186 84 126 57 106 48 157 71 21

[533]

[610]

[584]

50-3/8

[1280]

lbs. kg. lbs. kg. lbs. kg. lbs. kg. lbs. kg. X Y Z H

C150347

Fig. 1 -- 575J*07-12 Unit Dimensions

575J

Table 1A — Physical Data — 575J*07-12 Units — 60 Hz English

UNIT 575J*07A/B 575J*07G/H 575J*08A/B 575J*12A/B 575J*12G/H

NOMINAL CAPACITY (tons) 6 6 7.5 10 10

OPERATING WEIGHTS (lb)

Aluminum-Fin Coils 444 444 483 575 575

REFRIGERANT TYPE‡R-410A R-410A R-410A R-410A

Operating Charge (w/ fan coil), Typical (lb)†18.0 18.0 21.0 27.0 27.0

Shipping Charge (lb) 9.0 9.0 9.0 9.0 9.0

COMPRESSOR

Qty...Type 1...Scroll 1...2 Stage Scroll 1...Scroll 1...Scroll 2...Scroll

OUTDOOR FANS

Qty...Rpm 2...1100 2...1100 2...1100 2...1100 2...1100

Motor Hp 1/41/41/41/41/4

Diameter (in) 22 22 22 22 22

Nominal Airflow (Cfm Total) 6,000 6,000 6,000 6,000 6,000

Watts (Total) 610 610 610 610 610

OUTDOOR COIL (Qty) 1...Round Tube/Plate Fin (RTPF)

Face Area (sq ft total) 17.5 17.5 23.0 28.1 28.1

Rows/Fins per inch (FPI) 2/17 2/17 2/17 2/17 2/17

CONTROLS

Pressurestat Settings (psig)

High Cutout 630 10 630 10 630 10 630 10 630 10

Cut-in 505 20 505 20 505 20 505 20 505 20

Low Cutout 27 327 327 327 327 3

Cut-in 44 544 544 544 544 5

PIPING CONNECTIONS (in. ODS)

Qty...Vapor 1...11/81...11/81...11/81...13/81...13/8

Qty...Liquid 1...3/81...3/81...1/21...1/21...1/2

LEGEND

ODS — Outside Diameter Sweat (socket)

‡ Unit is factory-supplied with partial charge only.

† Typical operating charge with 25 ft of interconnecting piping.

575J

Table 1B — Physical Data — 575J*07-12 Units — 60 Hz SI

UNIT 575J*07A/B 575J*07G/H 575J*08A/B 575J*12A/B 575J*12G/H

NOMINAL CAPACITY (kW) 21.1 21.1 26.4 35.1 35.1

OPERATING WEIGHT (kg)

Aluminum-Fin Coils 201 201 219 261 261

REFRIGERANT TYPE‡R-410A R-410A R-410A R-410A R-410A

Operating Charge (w/ fan coil), Typical (kg)†8.2 8.2 9.5 12.2 12.2

Shipping Charge (kg) 4.1 4.1 4.1 4.1 4.1

COMPRESSOR

Qty...Type 1...Scroll 1...2 Stage Scroll 1...Scroll 1...Scroll 2...Scroll

OUTDOOR FANS

Qty...r/s 2...18 2...18 2...18 2...18 2...18

Motor Hp NEMA 1/41/41/41/41/4

Diameter (mm) 560 560 560 560 560

Nominal Airflow (L/s) 2832 2832 2832 2832 2832

Watts (Total) 610 610 610 610 610

OUTDOOR COIL (Qty) 1...Round Tube/Plate Fin (RTPF)

Face Area (sq m total) 1.6 1.6 2.1 2.6 2.6

Rows/Fins per Meter (Fins/m) 2/670 2/670 2/670 2/670 2/670

CONTROLS

Pressurestat Settings (kPa)

High Cutout 4344 70 4344 70 4344 70 4344 70 4344 70

Cut-in 3482 138 3482 138 3482 138 3482 138 3482 138

Low Cutout 186 21 186 21 186 21 186 21 186 21

Cut-in 303 35 303 35 303 35 303 35 303 35

PIPING CONNECTIONS (in. ODS)

Qty...Vapor 1...11/81...11/81...11/81...13/81...13/8

Qty...Liquid 1...3/81...3/81...1/21...1/21...1/2

LEGEND

NEMA — National Electrical Manufacturers Association

ODS — Outside Diameter Sweat (socket)

‡ Unit is factory-supplied with partial charge only.

† Typical operating charge with 7.62 m of interconnecting piping.

575J

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

575JE12A000A00A0A

Model Type

575J = Bryant Heat Pump

Condensing Unit

Puron®R–410A Refrigerant

Packaging

A=Standard

B=LTL

Refrigerant Circuit

A = Single Circuit

B = Single Circuit with Low Ambient Controller

G = Single Circuit, Two Stage (07, 08 and 12 size only)

H = Single Circuit, Two Stage with Low Ambient Controller

(07, 08 and 12 size only)

Electrical Options

A = None

C = Non-Fused Disconnect

Service Options

0 = None

1 = Unpowered Convenience Outlet

2 = Powered Convenience Outlet

Base Unit Controls

0 = Electro-Mechanical Controls

Not Used

0 = Not Used

Not Used

0 = Not Used

Not Used

0 = Not Used

Not Used

0 = Not Used

Voltage

E = 460/3/60

P = 208/230/3/6

T = 575/3/60

Nominal Tonnage

07 = 6 Ton

08 = 7.5 Ton

12 = 10 Ton

Coil Options

A = Al/Cu Standard

B = Pre Coated Al/Cu

C = E-Coated Al/Cu

M = Al/Cu Standard with Louvered Hail Guard

N = Pre Coated Al/Cu with Louvered Hail Guard

P = E-Coated Al/Cu with Louvered Hail Guard

Position

Example

C150348

Fig. 2 -- Model Number Nomenclature

DESIGNATESPOSITION

Week of manufacture (fiscal calander)

Manufacturing location5

Sequence number

Year of manufacture (”15” = 2015)

1−2

6−10

3−4

POSITION NUMBER

TYPICAL

12345678910

0515C12345

C150336

Fig. 3 -- Serial Number Nomenclature

.INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes and the NEC (National

Electrical Code) ANSI/NFPA 70 for special installa-

tion requirements.

2. Determine unit location (from project plans) or select

unit location.

3. Check for possible overhead obstructions which may

interfere with unit lifting or rigging.

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (pad,

rails or other) that provides for the minimum clearances

required for safety. This includes the clearance to

combustible surfaces, unit performance and service access

below, around and above unit as specified in unit

drawings. See Fig. 4.

Select a unit mounting system that provides adequate

height to allow for removal and disposal of frost and ice

that will form during the heating-defrost mode.

NOTE: Consider also the effect of adjacent units on

airflow performance and control box safety clearance.

575J

Do not install the outdoor unit in an area where fresh air

supply to the outdoor coil may be restricted or when

recirculation from the condenser fan discharge is possible.

Do not locate the unit in a well or next to high walls.

Evaluate the path and required line length for

interconnecting refrigeration piping, including vapor riser

requirements and liquid line lift; a heat pump system will

have one of each type in opposite modes. Relocate

sections to minimize the length of interconnecting tubing.

DO NOT BURY REFRIGERATION LINES.

Although unit is weatherproof, avoid locations that permit

water from higher level runoff and overhangs to fall onto

the unit.

REAR:

Min 18” (457 mm)

requried for service

Note: Observe requirements for 39” (914 mm) operating clearance

on either Left or Rear coil opening.

RIGHT:

Min 18” (457 mm)

requried for service

LEFT:

Min 18” (457 mm)

requried for service FRONT:

42” (1067 mm)

C11035

Fig. 4 -- Service Clearance Dimensional Drawing

Step 2 — Complete Pre-Installation Checks

Check Unit Electric Characteristic —

Confirm before installation of unit that voltage, amperage

and circuit protection requirements listed on unit data

plate agree with power supply provided.

Un--crate Unit —

Remove unit packaging except for the top skid assembly,

which should be left in place until after the unit is rigged

into its final location.

Inspect Shipment —

File a claim with shipping company if the shipment is

damaged or incomplete.

Consider System Requirements —

SConsult local building codes and National Electrical

Code (NEC, U.S.A.) for special installation

requirements.

SAllow sufficient space for airflow clearance, wiring,

refrigerant piping, and servicing unit. See Fig. 1 for unit

dimensions and weight distribution data.

SLocate the unit so that the outdoor coil (condenser)

airflow is unrestricted on all sides and above.

SThe unit may be mounted on a level pad directly on the

base channels or mounted on raised pads at support

points. See Tables 1A and 1B for unit operating

weights. See Fig. 1 for weight distribution based on

recommended support points.

NOTE: If vibration isolators are required for a particular

installation, use the data in Fig. 1 to make the proper

selection.

Step 3 — Prepare Unit Mounting Support

Slab Mount —

Provide a level concrete slab that extends a minimum of 6

in. (150 mm) beyond unit cabinet. Install a gravel apron in

front of condenser coil air inlet to prevent grass and

foliage from obstructing airflow.

Step 4 — Rig and Mount the Unit

Rigging —

These units are designed for overhead rigging. Refer to

the rigging label for preferred rigging method. Spreader

bars are not required if top crating is left on the unit. All

panels must be in place when rigging. As further

protection for coil faces, plywood sheets may be placed

against the sides of the unit, behind cables. Run cables to

a central suspension point so that the angle from the

horizontal is not less than 45 degrees. Raise and set the

unit down carefully.

If it is necessary to roll the unit into position, mount the

unit on longitudinal rails, using a minimum of 3 rollers.

Apply force to the rails, not the unit. If the unit is to be

skidded into position, place it on a large pad and drag it

by the pad. Do not apply any force to the unit.

Raise from above to lift the unit from the rails or pad

when unit is in its final position.

After the unit is in position, remove all shipping materials

and top crating.

Step 5 — Complete Refrigerant Piping Connections

Refrigerant lines must be carefully designed and

constructed to ensure equipment reliability and efficiency.

Line length, pressure drop, compressor oil return, and

vertical separation are several of the design criteria that

must be evaluated. See Table 2.

IMPORTANT: Do not bury refrigerant piping

underground.

IMPORTANT: A refrigerant receiver is not

provided with the unit. Do not install a receiver.

575J

Table 2 – 575J*07-12 Piping Recommendations (Single-Circuit Unit)

R-410A Equivalent Length

Ft 0-38 38-75 75-113 113-150

Model

Nominal Capacity

Length Linear

Length Equiiv

0-25

0-38

25-50

38-75

50-75

75-113

75-100

113-115

575J*07 Liquid Line 3/83/83/81/23/81/2

Max Lift

Cool

Heat

100

Vapor Line 7/87/81-1/81-1/8

Charge (lbs) 17.8 18.8 20.3 22.6 21.4 24.5

575J*08 Liquid Line 1/21/21/21/2

Max Lift

Cool

Heat

100

Vapor Line 7/81-1/81-1/81-1/81-1/8

Charge (lbs) 20.9 23.0 24.9 26.8

575J*12 Liquid Line 1/21/21/21/25/8

Max Lift

Cool

Heat

100

Vapor Line 7/81-1/81-1/81-1/81-1/81-3/8

Charge (lbs) 26.8 28.8 30.7 33.4 37.2

Legend:

Length Equiv Equivalent tubing length, including effects of refrigeration specialties devices

Liquid Line Tubing size, inches OD.

Max Lift

Cooling

Heating

Maximum liquid lift at maximum permitted liquid line pressure drop

SIndoor unit ABOVE outdoor unit

SIndoor unit BELOW outdoor unit

Vapor Line Tube size, inches OD

Charge Charge Quantity, lbs. Calculated for both liquid line sizes (where applicable), but only with large

suction line size (where applicable)

NOTE: For applications with linear length greater than 100 ft (30.5 m), contact your local Bryant

representative.

Check Vertical Separation —

If there is any vertical separation between the indoor and

outdoor units, check to ensure that the separation is within

allowable limits. Relocate equipment if necessary.

Provide Safety Relief —

If local codes dictate an additional safety relief device,

purchase locally and install locally. Installation will

require the recovery of the factory shipping charge before

the factory tubing can be cut and the supplemental relief

device is installed.

Refrigerant Line Sizing —

Consider the length of the piping required between the

outdoor and indoor units. The maximum allowable line

length is 100 ft (30.5 m). See Table 2. Refrigerant vapor

piping should be insulated.

Risers in Heat Pump Piping Systems —

Elevation differences between the outdoor unit and the

indoor unit in heat pump systems will create two riser line

conditions – one in the liquid line in one mode and one in

the vapor line in the opposite mode. See the following

table to identify which lines are risers in this installation.

Mode

575J Unit

BELOW

ID Unit

575J Unit

ABOVE

ID Unit

Riser in Riser in

Cooling Liquid Vapor

(Suction Gas)

Heating Vapor

(Discharge Gas) Liquid

Liquid Line Riser: Refer to Pipe Sizing Table, Table 2;

observe Max Lift limits for liquid line according to unit

mode, equivalent line length and pipe size.

VaporLineRiser:Refer to Table 3 for maximum pipe

size in single pipe vapor risers. All pipe size

recommendations in Pipe Sizing Table, Table 2, satisfy

these maximum vapor line sizes. If this installation is

re--using existing piping, check the vapor line sizes

against these maximum values; replace riser sections with

these pipe sizes if necessary.

575J

Table 3 – Maximum Vapor Line Sizes

575J

Size

575J Unit

BELOW

ID Unit

575J Unit

ABOVE

ID Unit

Max Diameter, Single Pipe (in.)

07A/B 1-1/81-5/8

07G/H 1-1/81-1/8

08A/B 1-3/81-5/8

12A/B 1-5/81-5/8

12G/H 1-3/81-3/8

Table 4 – Puron-duty Filter Drier(s)

Model-Size Qty Liquid

Line OD

Desiccant

Volume

Part

Number Ref

575J*07 13/8-in 8cu.in. KH43LS088

575J*08 11/2-in 16 cu. in. KH43LS102

575J*12 11/2-in 16 cu. in. KH43LS102

Table 5 – Refrigerant Specialties Part Numbers

LIQUID LINE

SIZE (in.)

LIQUID LINE

SOLENOID VALVE (LLSV)

SOLENOID

COIL

SIGHT

GLASS

FILTER

DRIER

3/8EF680033 plus EF680039 biflow kit EF680037 KM680008

Provided with unit

See Table 4

1/2EF680035 plus EF680039 biflow kit EF680037 KM680004

5/8EF680036 plus EF680039 biflow kit EF680037 KM680005

Install Filter Drier and Moisture Indicator —

Every unit MUST have a bi-directional filter drier in the

liquid line. Locate the filter drier(s) at the indoor unit, close

to the indoor coil’s thermal expansion valve (TXV) inlets.

575J units include one Puron-duty filter drier, shipped in

cartons attached to the unit basepan. Remove the filter

drier and prepare to install in the liquid line at the indoor

coil. Do not remove connection fitting plugs until ready to

connect and braze the filter drier into the liquid line

position. See Table 4.

IMPORTANT: A refrigerant receiver is not

provided with the unit. Do not install a receiver.

Installation of liquid line moisture indicating sightglass in

each circuit is recommended. Locate the sightglass(es)

between the outlet of the filter drier and the TXV inlet.

Refer to Table 5 for recommendations on refrigeration

specialties.

Select the filter drier for maximum unit capacity and

minimum pressure drop. Complete the refrigerant piping

from the indoor unit to the outdoor unit before opening

the liquid and vapor service valves at the outdoor unit.

Install Liquid Line Solenoid Valves —

It is recommended that a bi-directional solenoid valve be

placed in the main liquid line (see Figs. 5 & 6) between

the outdoor unit and the indoor coil. Locate the solenoid

valve at the end of the liquid line, near the outdoor unit

connections, with flow direction arrow pointed at the

outdoor unit. Refer to Table 5. (A liquid line solenoid

valve is required when the liquid line length exceeds 75 ft

[23 m].) This valve prevents refrigerant migration (which

causes oil dilution) to the compressor during the off cycle,

at low outdoor ambient temperatures. Wire the solenoid

according to the unit label diagram.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment

damage.

Failure to use a solenoid valve relay (SVR) PNO

HN61PC005 may cause overload of Comfort Alert

Diagnostic Module (CADM) and compressor alarm

lock out.

CAUTION

CAPACITY CONTROL LIQUID LINE SOLENOID

VALVE -- 575J units are single--stage only designs. DO

NOT USE a capacity control liquid line solenoid valve on

the indoor coil.

15 DIAMS

MIN 10

DIAMS

8 DIAMS

MIN

INDOOR

COIL CKT

AIRFLOW

TXV

SENSING

BULB

EQUALIZER LINE

SIGHT GLASS

A LOCATION

TXV

FILTER DRIER

A LOCATION

LEGEND

TXV — Thermostatic Expansion Valve

C11036

Fig. 5 -- Location of Sight Glass(es) and Filter Driers

(typical 575J size 07 & 08)

575J

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