TRANE A5PH3024A1000A Single Packaged Heat Pump Entry User Guide

User Guide for TRANE models including: A5PH3024A1000A, A5PH3030A1000A, A5PH3036A1000A, A5PH3042A1000A, A5PH3048A1000A, A5PH3060A1000A, A5PH3024A1000A Single Packaged Heat Pump Entry, A5PH3024A1000A, Single Packaged Heat Pump Entry, Packaged Heat Pump Entry, Heat Pump Entry, Pump Entry, Entry
88-A5PH3001-1A-EN

Installation, Operation, and Maintenance

Nov 8, 2024 — Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, ...
File Info : application/pdf, 40 Pages, 6.59MB
88-A5PH3001-1A-EN 11062024
Installation, Operation, and Maintenance
Single Packaged Heat Pump Entry, Convertible, 2-5 Ton, R-454B
A5PH3024A1000A A5PH3030A1000A A5PH3036A1000A A5PH3042A1000A A5PH3048A1000A A5PH3060A1000A

Note: "Graphics in this document are for representation only. Actual model may differ in appearance."
Note: "Unit specific Service Facts available online."

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

November 2024

88-A5PH3001-1A-EN

SAFETY SECTION
Important: This document contains a wiring diagram, a parts list, and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
WARNING
HAZARDOUS VOLTAGE!
Failure to follow this Warning could result in property damage, severe personal injury, or death. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.
WARNING
SAFETY AND ELECTRICAL HAZARD!
Failure to follow this Warning could result in property damage, severe personal injury, or death. These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not perform any servicing other than that contained in these operating instructions unless you are qualified to do so.
CAUTION
GROUNDING REQUIRED!
Failure to inspect or use proper service tools may result in equipment damage or personal injury. Reconnect all grounding devices. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
CAUTION
SHARP EDGE HAZARD!
Failure to follow this Caution could result in property damage or personal injury. Be careful of sharp edges on equipment or any cuts made on sheet metal while installing or servicing.

WARNING
UNIT CONTAINS R-454B REFRIGERANT!
Proper service equipment is required. Failure to use proper service tools may result in equipment damage or personal injury.
WARNING
SERVICE!
USE ONLY R-454B REFRIGERANT AND APPROVED COMPRESSOR OIL.
WARNING
LEAK DETECTION SYSTEM!
LEAK DETECTION SYSTEM installed. Unit must be powered except for service.
WARNING
SAFETY HAZARD!
Children should be supervised to ensure that they do not play with the appliance.
WARNING
SAFETY HAZARD!
This appliance is not to be used by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.
WARNING
SAFETY HAZARD!
Operating the unit without the access panels properly installed may result in severe personal injury or death. Do not operate the unit without the evaporator fan access panel or evaporator coil access panel in place.

©2024

88-A5PH3001-1A-EN

WARNING
RISK OF FIRE!
Flammable refrigerant used. To be repaired only by trained service personnel. Do not puncture refrigerant tubing.
Dispose of refrigerant in accordance with federal and/or local regulations.

SAFETY SECTION
WARNING
WARNING!
This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Important: Wear appropriate gloves, arm sleeve protectors and eye protection when servicing or maintaining this equipment.
Important: Air filters and media wheels or plates shall meet the test requirements in UL 900.

88-A5PH3001-1A-EN

3

Table of Contents
Information on Servicing . . . . . . . . . . . . . . . . . . . 5 Prior to Beginning Work . . . . . . . . . . . . . . . . . . . 5 Repairs to Electrical Components . . . . . . . . . . 5 Detection of Flammable Refrigerants . . . . . . . 5 Removal and Evacuation . . . . . . . . . . . . . . . . . . 6 Charging Procedures . . . . . . . . . . . . . . . . . . . . . 6 Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . 7
Introduction, Unit Inspection and Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Inspect Shipment . . . . . . . . . . . . . . . . . . . . . . . . . 8 Product Specification . . . . . . . . . . . . . . . . . . . . . 9 Charging in Cooling above 55°F OD Ambient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Determine Unit Clearances . . . . . . . . . . . . . . . . 11
Review Location and Recommendation Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Refrigerant Leak Detection System . . . . . . . . 14
Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Ground Level Installation. . . . . . . . . . . . . . . . . 15 Rooftop Installation -- Curb Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Lifting and Rigging . . . . . . . . . . . . . . . . . . . 16 Rooftop Installation -- Frame Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Rooftop Installation -- No Curb/ Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Ductwork Installation . . . . . . . . . . . . . . . . . . . . 20
Attaching Downflow Ductwork to Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Attaching Downflow Ductwork to Roof Frame . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Condensate Drain Piping . . . . . . . . . . . . . . . . . 20 Air Filter Installation . . . . . . . . . . . . . . . . . . . . . 20 Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 21
Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Pre-Start Quick Checklist . . . . . . . . . . . . . . . . . 23 Starting the Unit in Cooling Mode. . . . . . . . . 23 Starting the Unit in Heating Mode. . . . . . . . . 23 Sequence of Operation. . . . . . . . . . . . . . . . . . . 24 Final Installation Checklist . . . . . . . . . . . . 25 Verification of Mitigation Actions . . . . . . . . . 25 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Owner Maintenance. . . . . . . . . . . . . . . . . . 26 Service Maintenance . . . . . . . . . . . . . . . . . 26 Defrost Control . . . . . . . . . . . . . . . . . . . . . . 26
Pressure Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Indoor Fan Performance (230v) . . . . . . . . . . . . 36
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . 38
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . 39
Important Product Information . . . . . . . . . . . . 40

4

88-A5PH3001-1A-EN

Information on Servicing
All replacement parts shall be in accordance with the manufacturer's specifications.
Prior to Beginning Work
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following shall be completed prior to conducting work on the system:
· Work shall be undertaken under a controlled procedure to minimize the risk of a flammable gas or vapor being present while the work is being performed.
· All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided.
· The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e., non-sparking, adequately sealed or intrinsically safe.
· If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
· No person carrying out work in relation to a refrigerating system which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. "No Smoking" signs shall be displayed.
· Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
· The following checks shall be applied to installations using flammable refrigerants:
 Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected;
88-A5PH3001-1A-EN

 Refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.
Repairs to Electrical Components
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer's technical department for assistance.
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment, so all parties are advised.
Initial safety checks shall include:
· That capacitors are discharged; this shall be done in a safe manner to avoid possibility of sparking;
· That no live electrical components and wiring are exposed while charging, recovering or purging the system;
· That there is continuity of earth bonding.
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
Detection of Flammable Refrigerants
Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
The following leak detection method is deemed acceptable for all refrigerant systems:
· Electronic leak detectors may be used to detect refrigerant leaks but, in the case of flammable refrigerants, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall
5

Information on Servicing

be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25 % maximum) is confirmed.
Important: The following leak detection methods are deemed acceptable for all refrigerant systems: Electronic leak detectors calibrated for R454B (with a sensitivity of 5 grams/year)
· Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
Example of leak detection fluids are:
· Bubble method,
· Fluorescent method agents
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak.
Removal and Evacuation
When breaking into the refrigerant circuit to make repairs - or for any other purpose - conventional procedures shall be used. However, for flammable refrigerants it is important that best practice be followed, since flammability is a consideration. The following procedure shall be adhered to:
· Safely remove refrigerant following local and national regulations;
· Evacuate;
· Purge the circuit with inert gas;
· Evacuate;
· Continuously flush or purge with inert gas when using flame to open circuit;
· And open the circuit.
The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For appliances containing flammable refrigerants, the system shall be purged

with oxygen-free nitrogen to render the appliance safe for flammable refrigerants.
This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems.
For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system. When the final oxygenfree nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
The outlet for the vacuum pump shall not be close to any potential ignition sources, and ventilation shall be available.
Charging Procedures
In addition to conventional charging procedures, the following requirements shall be followed.
· Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them.
· Cylinders shall be kept in an appropriate position according to the instructions.
· Ensure that the refrigerating system is earthed prior to charging the system with refrigerant.
· Label the system when charging is complete (if not already).
· Extreme care shall be taken not to overfill the refrigerating system.
Prior to recharging the system, it shall be pressuretested with the appropriate purging gas. The system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.
Important: The unit should not be tested higher than 450 psig for servicing or component replacement.
See installation instructions below for further details.

6

88-A5PH3001-1A-EN

Information on Servicing

Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e., special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of the flammable refrigerant. If in doubt, the manufacturer should be consulted. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leakfree disconnect couplings and in good condition.
The recovered refrigerant shall be processed according to local legislation in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The compressor body shall not be heated by an open flame or other ignition sources to accelerate this process. When oil is drained from a system, it shall be carried out safely.
Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that

electrical power is available before the task is commenced.
1. Become familiar with the equipment and its operation.
2. Isolate system electrically.
3. Before attempting the procedure, ensure that:
a. Mechanical handling equipment is available, if required, for handling refrigerant cylinders;
b. All personal protective equipment is available and being used correctly;
c. The recovery process is supervised at all times by a competent person;
d. Recovery equipment and cylinders conform to the appropriate standards.
4. Pump down refrigerant system, if possible.
5. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
6. Make sure that cylinder is situated on the scales before recovery takes place.
7. Start the recovery machine and operate in accordance with instructions.
8. Do not overfill cylinders (no more than 80 % volume liquid charge).
9. Do not exceed the maximum working pressure of the cylinder, even temporarily.
10. When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
11. Recovered refrigerant shall not be charged into another refrigerating system unless it has been cleaned and checked.
Equipment shall be labelled stating that it has been decommissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing flammable refrigerant, ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.

88-A5PH3001-1A-EN

7

Introduction, Unit Inspection and Specification

Introduction
Read this manual carefully before attempting to install, operate, or perform maintenance on this unit. Installation and maintenance should be performed by qualified service technicians only. This unit is listed by Underwriters Laboratory.
Packaged units are designed for outdoor mounting with a vertical condenser discharge. They can be located either at ground level or on a roof in accordance with local codes. Each unit contains an operating charge of refrigerant as shipped.
Extreme mounting kits are available for slab (BAYEXMK003), utility curb (BAYEXMK002) and perimeter curb (BAYEXMK001) mountings.
Inspect Shipment
1. Check for damage after the unit is unloaded. Report promptly to the carrier any damage found to the unit. Do not drop the unit.
Important: To prevent damage to the sides and top of the unit when hoisting, use "spreader bars" see, "Rooftop Installation -- No Curb/Frame," p. 17.

2. Check the unit's nameplate to determine if the unit is correct for the intended application. The power supply must be adequate for both the unit and all accessories.
3. Check to be sure the refrigerant charge has been retained during shipment. Remove the Compressor access panel to access the 1/4" flare pressure taps.
4. If this unit is being installed on a curb, verify that the correct curb is provided with the unit.
· A5PH3024-036 use model BAYCURB050,
· A5PH3042060 use model BAYCURB051
5. If the unit is being hoisted, accessory kit BAYLIFT002 is recommended. It includes a kit of four (4) lifting lugs and instructions.
Notes:
· If practical, install any internal accessories to the unit at the shop.
· The packaged units have been evaluated in accordance with the Code of Federal Regulations, Chapter XX, Part 3280 or the equivalent. "SUITABLE FOR MOBILE HOME USE."

8

88-A5PH3001-1A-EN

Introduction, Unit Inspection and Specification

Product Specification

MODEL RATED Volts/PH/Hz

A5PH3024

A5PH3030

A5PH3036

A5PH3042

208230/1/60

A5PH3048

A5PH3060

Performance Cooling BTUH(a) Indoor Airflow (CFM) Power Input (KW) EER2/SEER2 (BTU/Watt-Hr.)(b)

23800 740 2.11

29600 990 2.55

35200

43000

1150

1440

3.11

3.65

10.6/13.4

48000 1650 4.34

57000 1970 5.00

Sound Power Rating [dB(A)](c)

66.4

70

70.9

71.5

72.5

80

PERFORMANCE HEATING

208230/1/60

(High Temp.) BTUH Power Input (KW) (Low Temp.) BTUH Power Input (KW) HSPF2 (BTUH/Watt-Hr) POWER CONN. -- V/Ph/Hz

21000 1.76 12800 1.63 6.7

26400 2.23 15800 2.04 6.7

34000

39000

2.85

3.33

21400

24400

2.62

3.12

6.7

6.7

208230/1/60

45000 3.93 29400 3.66 6.7

56000 4.78 34800 4.36 6.7

Min. Brch. Cir. Ampacity(d) Fuse Size -- Max. (amps) Fuse Size -- Recmd. (amps) COMPRESSOR VOLTS/PH/HZ R.L. Amps -- L.R. Amps OUTDOOR COIL -- TYPE Rows/F.P.I

LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE
SCROLL 208230/1/60
LOCATED ON UNIT NAMEPLATE SPINE FIN 2 / 24

Face Area (sq. ft.) Tube Size (in.)

13.32

15.49

15.49

20.54

20.54

23

3/8

Refrigerant Control INDOOR COIL -- TYPE Rows/F.P.I 3 / 15

3/15

4/15

EXPANSION VALVE

PLATE FIN

4/15

3/15

3/15

4/15

Face Area (sq. ft.) Tube Size (in.)

3.5

5.0

3/8

Refrigeration Control Drain Conn. Size (in.)

EXPANSION VALVE 3/4" FEMALE NPT

OUTDOOR FAN -- TYPE DIA. (IN.) DRIVE/NO. SPEEDS CFM @ 0.0 in. w.g.(e) Motor -- HP/R.P.M

2550 1/12 / 825

23.4
3270 1/6 / 825

PROPELLER

DIRECT / 1

3250

4400

1/5 / 825

1/4 / 825

28.3
4400 1/4 / 825

5500 1/3 / 825

Volts/Ph/Hz F.L. Amps/L.R Amps INDOOR FAN -- TYPE

208230/1/60 LOCATED ON UNIT NAMEPLATE
CONSTANT TORQUE ECM

Dia. x Width (in.) Drive/No. Speeds

10.62 X 10.62

10.62 X 10.62

10.62 X 10.62 10.62 X 10.62 DIRECT / 4

10.62 X 10.62

11.87 X 10.62

CFM @ 0.0 in. w.g.(f) Motor -- HP / R.P.M.

1/2 / 1050

1/2 / 1050

SEE FAN PERFORMANCE TABLE

1/2 / 1050

3/4 / 1050

3/4 / 1050

1 / 1050

Volts/Ph/Hz

208230/1/60

F.L. Amps

LOCATED ON UNIT NAMEPLATE

FILTER / FURNISHED

NO

Type Recommended

THROWAWAY

Recmd. Face Area (sq. ft)(g)

4.0

5.3

REFRIGERANT

R-454B

Charge (lbs.)

LOCATED ON UNIT NAMEPLATE

Subcooling

12°

12°

12°

12°

12°

8°

(a) Rated in accordance with AHRI Standard 210/240. (b) Rated in accordance with D.O.E. test procedure. (c) Sound Power values are not adjusted for AHRI 27095 tonal corrections. (d) Calculated in accordance with currently prevailing Nat'l Electrical Code. (e) Standard Air -- Dry Coil -- Outdoor. (f) Standard Air -- Dry Coil -- Indoor (g) Filters must be installed in return air stream. Square footages listed are based on 300 f.p.m. face velocity. If permanent filters are used size per
manufacturer's recommendation with a clean resistance of 0.05" W.C.

88-A5PH3001-1A-EN

9

Introduction, Unit Inspection and Specification

Charging in Cooling above 55°F OD Ambient
If servicing the equipment requires system evacuation, then re-charge the system to the weight specified on the nameplate. Verify the system subcooling using the Subcooling Charging Table and, if necessary, adjust the charge using the procedure below.
1. For best results -- the indoor temperature should be kept between 70°F to 80°F. Add system heat if needed.
2. Whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made.
3. Measure Liquid Line Temperature and Refrigerant Pressure at service valved in the compressor compartment.
4. Locate your liquid line temperature in the left column of the table, and the intersecting liquid line

pressure under the subcool value column, Add refrigerant to raise the pressure to match the table, or remove refrigerant to lower the pressure. Again, wait 20 minutes for the system conditions to stabilize before adjusting charge again.
Note: System charge shall never be more than 110% or less than 90% of nameplate charge. If specified subcooling cannot be achieved within those charge bounds, contact your Field Service Representative.
5. When system is correctly charged, you can refer to System Pressure Curves to verify typical performance.
CHARGING BELOW 55°F
Evacuate system and weigh in nameplate charge or use factory charge. Correct subcooling may be verified when the temperature is above 55°F.

R-454B REFRIGERANT CHARGING CHART

LIQUID

DESIGN SUBCOOLING (°F)

TEMP

6

7

8

9

10

11

12

13

14

(°F)

LIQUID GAGE PRESSURE (PSI)

55

164

167

170

172

175

178

181

184

187

60

178

181

184

187

190

194

197

200

203

65

193

197

200

203

206

210

213

217

220

70

210

213

217

220

223

227

230

234

238

75

227

230

234

238

241

245

249

252

256

80

245

249

252

256

260

264

268

272

276

85

264

268

272

276

280

284

288

292

297

90

284

288

292

297

301

305

309

314

318

95

305

309

314

318

323

327

332

336

341

100

327

332

336

341

346

351

355

360

356

105

351

355

360

365

370

375

380

385

390

110

375

380

385

390

396

401

406

412

417

115

401

406

412

417

422

428

433

439

445

120

428

433

439

445

450

456

462

468

474

125

456

462

468

474

480

486

492

498

504

Charging Below 55°F OD Ambient in Heating Only
1. The Subcool Charging Method in cooling is NOT recommended below 55°F outdoor ambient.
2. The only recommended method of charging at outdoor ambients below 55°F, is to weigh in the charge in the heating mode.
3. Use Nameplate charge.

4. Check liquid line temperature and pressure (at the OD valves) to obtain a minimum of the subcooling shown in the subcooling table.
5. Add charge if the minimum subcooling as shown in the table is not obtained with the nameplate charge.
6. It is important to return in the spring or summer to accurately charge the system in the cooling mode at outdoor ambients above 55°F.

10

88-A5PH3001-1A-EN

Determine Unit Clearances
Figure 1. Space on Sides Requirements EE
CC
DD
BB

Important: Install
appropriate appearance label.

FF

2 - 3 TON Units

3.5 - 5 TON Units

RECOMMENDED SERVICE CLEARANCE mm [Inches]

W/ ECONOMIZER

W/ ECONOMIZER

BACK SIDE 305 [12] 762 [30] 305 [12] 762 [30]

LEFT SIDE 762 [30] 914 [36] 914 [36] 1067 [42]

RIGHT SIDE 610 [24]

-

610 [24]

-

FRONT SIDE 1067 [42]

-

762 [30]

-

CLEARANCE TO COMBUSTIBLE MATERIAL mm [Inches]

BOTTOM

0

0

BACK SIDE

25 [1]

25 [1]

LEFT SIDE

152 [6]

152 [6]

RIGHT SIDE

152 [6]

152 [6]

FRONT SIDE

305 [12]

305 [12]

TOP

914 [36]

914 [36]

DIMENSIONS mm [Inches]

A

HEIGHT OF UNIT - TABLE NEXT PAGE

BB

CENTER OF GRAVITY - TABLE NEXT PAGE

CC

CENTER OF GRAVITY - TABLE NEXT PAGE

DD -Depth

1049.02 [41-5/16]

1125.22 [44-5/16]

EE -Width

1240.28 [48-27/32]

1487.17 [58-9/16]

FF

469.93 [18-1/2]

551.48 [ 21-23/32]

88-A5PH3001-1A-EN

Important: Install appropriate appearance label.
11

Determine Unit Clearances
Figure 2. Bottom and Back Duct Openings

B
C D E

H G
E

F

I

J

M
L J K

N

Height mm [in] A -Height
A5PH3024 898.53 [35 - 3/8] A5PH3030 949.33 [37 - 3/8] A5PH3036 A5PH3042 1000.13 [39 - 3/8] A5PH3048 A5PH3060 1050.93 [41 - 3/8]

B 304.80 [12.0]
457.20 [18.0]

C 75.41 [2.93]
75.41 [2.97]

D 75.41 [2.93]
75.41 [2.97]

PHYSICAL DIMENSIONS mm [in]

E

F

G

H

I

J

K

L

M

N

406.40 167.89 173.46 304.80 79.50 398.22 176.07 177.55 296.62 1155.45 [16.0] [6.61] [6.8] [12.0] [3.13] [15.68] [6.93] [6.99] [11.68] [45.49]

381.00 244.09 318.75 381.00 79.50 449.02 176.07 322.84 372.82 1402.34 [15.0] [9.61] [12.55] [15.0] [3.13] [17.68] [6.93] [12.71] [14.68] [55.21]

A5PH3024 A5PH3030 A5PH3036 A5PH3042 A5PH3048
A5PH3060

W1 53.5 [118] 56.7 [125] 61.8 [136] 67.1 [148] 71.7 [158]
80.3 [177]

Corner Weights KG [LBS]

W2

W3

W4

33.3 [73] 24.1 [53] 38.3 [84]

50.3 [110] 16.6 [37] 39.2 [86]

37.3 [82] 26.6 [59] 41.7 [92]

47.6 [105] 39.5 [87] 49.9 [110]

40.8 [90] 30.8 [68] 52.2 [115]

47.2 [104] 35.8 [79] 59.9 [132]

SHIPPING WEIGHT UNIT WEIGHT

KG [LBS]

KG [LBS]

182.8 [403]

149.2 [329]

196.9 [434]

162.8 [359]

201.4 [444]

167.4 [369]

251.3 [554]

204.1 [450]

242.7 [535]

242.7 [535]

270.3 [596]

270.3 [596]

Center Of Gravity mm [inch]

BB

CC

430.0 [16.9] 565.3 [22.3]

413.5 [16.3] 581.0 [22.9]

430.0 [17.0] 535.0 [21.1]

449.6 [17.7] 641.8 [25.3]

414.0 [16.3] 635.0 [25.0]

414.0 [16.3] 635.0 [25.0]

12

88-A5PH3001-1A-EN

Review Location and Recommendation Information

Note: There is no declared maximum altitude for operating the appliance.
Horizontal Airflow Units
1. Location of the unit must allow service clearance around it to ensure adequate serviceability, maximum capacity, and peak operating efficiency.
2. These units are designed for outdoor installation. They may be installed directly on a slab, wood flooring, or on Class A, B, or C roof covering material. The discharge air from the condenser fans must be unrestricted for a minimum of 3 feet above the unit.
3. Check the handling facilities to ensure the safety of personnel and the unit(s).
4. The unit must be mounted level for proper drainage of water through the drain holes in the base pan.
5. The unit should not be exposed to direct roof water runoff.
6. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.
7. Holes through exterior walls or roof must be sealed in accordance with local codes.
8. All fabricated outdoor ducts should be as short as possible.
Clearances
1. The recommended clearances for single-unit installations are illustrated in "Determine Unit Clearances," p. 11.
2. Any reduction of the unit clearances indicated in these figures may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be inadequate should be reviewed with a local engineer.
3. See the unit's nameplate for the absolute minimum clearance between the unit and any combustible surfaces.
Down Airflow Units
1. Location of the unit must allow service clearance around it to ensure adequate serviceability, maximum capacity, and peak operating efficiency.
2. Refer to the Installation section for instruction on converting the supply and return airflow covers to down airflow.

3. The field assembled Roof Mounting Curb (BAYCURB050 or BAYCURB051) or a field fabricated curb should be in place before the unit is hoisted to the roof top. The Roof Mounting Curb (frame) must be installed on a flat, level section of the roof (maximum of 1/4" per foot pitch) and provide a level mounting surface for the unit. Also, be sure to provide sufficient height above the roof to prevent water from entering the unit.
4. Be sure the mounting curb spans structural members (trusses) of the roof, thereby providing sufficient support for the weight of the unit, the curb, the duct(s), and any factory or field installed accessories.
5. The unit must be mounted level for proper drainage of water through the drain holes in the base pan.
6. Be sure the hole in the structure for the ducts is large enough to accommodate the fabricated ducts and the insulation surrounding them. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.
7. Holes through exterior walls or roof must be sealed in accordance with local codes.
8. These units are design certified for outdoor installation. They may be installed directly on a slab, wood flooring, or on Class A, B, or C roof covering material. The discharge air from the condenser fans must be unrestricted for a minimum of 3 feet above the unit.
9. Check the handling facilities to ensure the safety of personnel and the unit(s).
Clearances
1. The recommended clearances for single-unit installations are illustrated in "Determine Unit Clearances," p. 11.
2. Any reduction of the unit clearances indicated in these figures may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be inadequate should be reviewed with a local engineer.
3. See the unit's nameplate for the absolute minimum clearance between the unit and any combustible surfaces.

88-A5PH3001-1A-EN

13

Refrigerant Leak Detection System

For all tables contained in this section of the manual, the refrigerant charge is the total system charge which is marked on the unit nameplate.
WARNING
Risk of Fire!
Flammable refrigerant used. To be repaired only by trained service professional. Do not puncture refrigerant tubing. Dispose of properly in accordance with federal or local regulations. Flammable refrigerant used.

· Turning on the blower of the indoor unit to dilute leaked refrigerant;
· Fully opening any zoning dampers, when applicable;
· Turning off the compressor of the outdoor unit;
· De-energizing potential sources of ignition connected to the system;
· Energizing an audible alarm, if so equipped. Examples of potential ignition sources that are deenergized include electrostatic air cleaners.

WARNING
LEAK DETECTION SYSTEM!
LEAK DETECTION SYSTEM installed. Unit must be powered except for service.
To ensure safety of the building occupants, the packaged unit is equipped with a refrigerant leak detection system. The system is comprised of a refrigerant sensor and a mitigation control board. The system automatically detects leaks in the indoor coil and initiates actions to mitigate the risk of ignition of the leaked refrigerant, including:

Minimum Conditioned Space
The installer must verify that the total space conditioned by the system is large enough to safely dilute any leaked refrigerant in the event of a refrigerant leak of the indoor coil.
The minimum space conditioned by the appliance shall be according to Table 1, p. 14. The conditioned space includes any parts of the space connected via an air duct system. The altitude of installation is the altitude above sea level of the site where the equipment is installed.

Table 1. Minimum Space Conditioned by the Appliance

Charge (lb) 4 5 6 7 8 9 10 11 12 13 14 15

Sea Level -- 2,000
63 79 95 110 126 142 158 173 189 205 221 236

2,001 -- 4,000
66 83 100 116 133 149 166 183 199 216 232 249

4,001 -- 6,000
70 88 105 123 140 158 175 193 211 228 246 263

Altitude (ft)

6,001 -- 8,000

8,001 -- 10,000

10,001 -- 12,000

Minimum Conditioned Space (ft2)

74

79

85

93

99

106

112

119

127

130

138

148

149

158

169

167

178

190

186

198

211

205

218

232

223

237

254

242

257

275

260

277

296

279

297

317

12,001 -- 14,000
91 113 136 159 181 204 227 249 272 295 318 340

14,001 -- 15,000
94 118 141 165 188 212 235 259 282 306 330 353

Above 15,000
98 122 147 171 196 220 245 269 294 318 343 367

14

88-A5PH3001-1A-EN

Unit Installation
Note: The factory ships this unit for horizontal installation.
Ground Level Installation
To Install the unit at ground level:
1. Place the unit on a pad the size of the unit or larger. The unit must be mounted level for proper drainage of water through the holes in the base pan. To attach the unit securely to the slab, use extreme mounting kit, BAYEXMK003. Usage of the extreme mounting kit accessories is a recommendation, not a requirement.
The pad must not come in contact with the structure. Be sure the outdoor portion of the supply and return air ducts are as short as possible. As indicated in , vibration support is a recommendation, not a requirement.
2. Location of the unit must allow service clearance around it. Clearance of the unit must be given careful consideration. See, "Determine Unit Clearances," p. 11.
Note: Any reduction of the unit clearances indicated in these illustrations may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be inadequate should be reviewed with a local engineer.
Important: A minimum 0" clearance to combustible material shall be maintained on air outlet duct.
3. Attach the supply and return air ducts to the unit as explained in the ductwork Installation section.
4. Flexible duct connectors must be of a flame retardant material. Insulate any ductwork outside of the structure with at least two (2) inches of
Table 2. Typical Ground Level Application

insulation and weatherproof. There must be a weatherproof seal where the duct enters the structure.
5. Do not expose the unit to direct roof water runoff.
6. Seal all holes through exterior walls in accordance with local codes.
7. Continue with the following installation sections to complete the installation: Ductwork, Filter and Electrical Wiring.
Rooftop Installation -- Curb Mounting
Convert Horizontal Airflow to Down Airflow
The factory ships the unit for horizontal airflow. Perform this procedure to convert it to down airflow:
1. Remove the three (3) sheet metal screws securing the supply air cover and the four (4) sheet metal screws securing the return air cover from the base of the unit. Remove the covers from the base.
2. Place the covers over the horizontal supply and return openings (painted side out). Align the screw holes, and secure using the same screws removed in step 1.
Install Full Perimeter Roof Mounting Curb
1. Verify that the roof mounting curb is correct for the unit. There are two curbs depending on the unit cabinet sizes:
· A5PH3024-036 use model BAYCURB050,
· A5PH3042-060 use model BAYCURB051
2. Assemble and install the curb following the instructions in the Installer's Guide included with the appropriate curb.

Figure 3. Typical Ground Level Application Note: Use the extreme mounting kit, BAYEXMK002, to secure the unit to the slab.
SIDING

RETURN SUPPLY AIR DUCT AIR DUCT

OUTDOOR AIR DISCHARGE

EXTERIOR WALL

INSULATE WEATHERPROOF OR RAIN SHIELD

FLEXIBLE DUCT CONNECTORS

SUPPORT PAD FOUNDATION
3/4" VIBRATION ISOLATORS, USE 7 ISOLATORS

88-A5PH3001-1A-EN

15

Unit Installation
Table 3. Converting Horizontal to Down Airflow
Figure 4. Converting Horizontal to Down Airflow

Lifting and Rigging
WARNING
IMPROPER UNIT LIFT!
Failure to properly lift unit could result in death or serious injury or possible equipment or propertyonly damage. Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level.
Important: Do not lift the unit without test lifting for balance and rigging. Do not lift the unit in windy conditions or above personnel. Do not lift the unit by attaching clevis, hooks, pins, or bolts to the unit casing, casing hardware, corner lugs, angles, tabs, or flanges. Failure to observe these warnings may result in equipment damage.
1. Before preparing the unit for lifting, check the unit dimension drawings for center of gravity for lifting safety ("Determine Unit Clearances," p. 11). Because of placement of internal components, the unit's weight may be unevenly distributed. Approximate unit weights are also provided in the unit drawings.
Note: Unit rigging and hoisting requires accessory kit BAYLIFT002. It includes a kit of four (4) lifting lugs.
2. Insert the four lifting lugs in the openings provided in the drip lip on each end of the unit. A tap or jerk to the lug will overcome the interference that arises due to the dimple on the lug.
3. When hoisting the unit, be sure that a proper method of rigging is used. Use slings and spreader bars for protection during lifting. Always test-lift the
16

unit to determine the exact unit balance and stability before hoisting it to the installation location.
4. When the curb and air ducts have been properly installed, the unit is ready to be hoisted to the roof and set in position.
Important:
· To prevent damage to the sides and top of the unit when hoisting use "spreader bars".
· The unit must be lowered into position. The P.V.C. rubber tape on the curb flange permits the unit to be repositioned if required without destroying the P.V.C. rubber seals affixed to the mounting curb.
Placing the Unit on the Mounting Curb
1. The unit is designed with a perimeter drip lip that is lower than the unit base pan, see, Table 5, p. 18.
2. Position the unit drip lip down over and in contact with the outside corner of the curb. Continue to lower the unit on top of the curb, with the unit drip lip astraddle, and in contact with, both the end and side rail of the curb. The unit should now rest on top of the curb. Consider using the extreme mounting kit, BAYEXMK001, to add additional hold down strength to the mounting.
Notes:
· For rooftop applications, the use of extreme mounting kits and vibration isolators is optional and not mandatory.
· The ductwork is installed as part of the curb installation. Do not attach ductwork to the unit and lower the unit with ductwork onto the curb.
88-A5PH3001-1A-EN

Unit Installation

Table 4. Vibration Isolators/Snow Feet Locations
Note: The installation instructions indicate typical installation only, but actual installation may differ.
Note: These views represent the base as viewed looking up from underneath the unit.
Important: Unit vibration isolator support is recommended in the general areas shown. Locate 3/4" thick vibration isolators on the bottom of the basepan as illustrated by black dots for ground level pad applications. Modify vibration isolator location as necessary for frame and rail applications.

Small Cabinet *****024-036
Rooftop Installation -- Frame Mounting
For rooftop applications using field fabricated frame and ducts use the following procedure:
1. Locate and secure the frame to the roof by bolting or welding. Frame must provide adequate center support via a cross member centrally located channel rail. See, . Vibration isolators should be installed as indicated in Table 4, p. 17, adjust as necessary for your frame. The isolators must be placed on base pan, not drip lip. Add flashing as required. Flashing must conform to local building codes.
2. Prepare the hole in the roof in advance of installing the unit.
3. Secure the horizontal or down airflow ducts to the roof. Refer to the previous Convert from Horizontal Airflow to Down Airflow section if conversion is needed.
4. All fabricated outdoor ducts should be as short as possible.
5. Place the unit on the frame.
6. The unit must be mounted level for proper drainage of water through the holes in the base pan.
7. Secure the unit to the frame.
8. Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then weatherproof. There must be a weatherproof seal where the duct enters the structure.
9. The unit should not be exposed to direct roof water runoff.
10. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.
11. Access and service clearances for the unit must be

Medium Cabinet *****042-060
given careful consideration when locating the duct entrance openings. "Determine Unit Clearances," p. 11 provide unit dimensions.
12. Continue with the following installation sections to complete the installation: Ductwork, Filter, and Electrical Wiring.
Rooftop Installation -- No Curb/ Frame
For roof top applications using field fabricated ducts and sleeper rails rather than a curb or frame, use the following procedure:
1. Locate and secure the sleeper rails to the roof by bolting (three (3) rails required). One on each end to support the edges of the unit and one across the center of the unit. The center rail must run inside both drip lips. Vibration isolators should be installed, adjust as necessary for your sleeper rails. The isolators must be placed on base pan, not drip lip. Add flashing as required. Flashing must conform to local building codes.
2. Prepare the hole in the roof in advance of installing the unit.
3. Secure the horizontal or down airflow ducts to the roof. Refer to the previous Convert from Horizontal Airflow to Down Airflow section if conversion is needed.
4. All fabricated outdoor ducts should be as short as possible.
5. Place the unit on the rails.
6. The unit must be mounted level for proper drainage of water through the holes in the base pan.
7. Secure the unit to the rails.
8. Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then weatherproof. There must be a weatherproof seal

88-A5PH3001-1A-EN

17

Unit Installation

where the duct enters the structure.
9. No exposure to direct roof water runoff.
10. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.
Table 5. Lifting and Rigging

Base of unit rest on top of curb rails

Drip lip on perimeter of unit

11. Access and service clearances for the unit must be given careful consideration when locating the duct entrance openings. "Determine Unit Clearances," p. 11 provide unit dimensions.
12. Continue with the following installation sections: Ductwork, Filter and Electrical Wiring.

Spreader Bars

Table 6. Curb Dimensions

Gasket Seal

Drip Lip

Dimple

BAYLIFT002 Lifting Lugs

A5 PH*, PA*, PG* A5 PH*, PA*, PG*
This drawing was prepared by the manufacturer in order to provide detail regarding job layout only. This drawing is not intended to be used as a basis to construct, build or modify the item depicted in the drawing. The manufacturer is not responsible for the unauthorized use of this drawing and expressly disclaims any liability for damages resulting from such unauthorized use.

18

88-A5PH3001-1A-EN

Table 7. Typical Rooftop Horizontal Airflow Application with Frame
Supply Air Return Air

Unit Installation

Roof Flashing
Channel Iron Center Support (Center Support required on all frame applications).
Table 8. Typical Rooftop Down Airflow Application with Frame

Angle Iron Frame

Return Air Roof Flashing
Channel Iron Center Support (center support required on all frame applications).
88-A5PH3001-1A-EN

Supply Air Roof Flashing
Angle Iron Frame
19

Unit Installation

Ductwork Installation

Attaching Downflow Ductwork to Roof Curb
Supply and return air flanges are provided on the roof curb for easy duct installation. All ductwork must be run and attached to the curb before the unit is set into place.

Attaching Downflow Ductwork to Roof Frame

Follow these guidelines for ductwork construction:
Connections to the unit should be made with three (3) inch canvas connectors to minimize noise and vibration transmission.
Elbows with turning vanes or splitters are recommended to minimize air noise and resistance.
The first elbow in the ductwork leaving the unit should be no closer than two (2) feet from the unit, to minimize noise and resistance.
To prevent leaking, do not attach the ductwork to the bottom of the unit base. Refer to the bottom example in the figure below.

Figure 5. Attaching Down Airflow Ductwork

AIR PROOF THIS SEAM

UNIT BASE

FIELD DUCT

UNIT DUCT FLANGE

UNIT DUCT FLANGE
FIELD DUCT

AIR PROOF THIS SEAM
UNIT BASE FIELD DUCT
AIR PROOF THIS SEAM
UNIT BASE
UNIT DUCT FLANGE

UNIT BASE

UNIT DUCT FLANGE
NOT RECOMMENDED

WATERPROOF SEAM WITH BUTYL OR SILICONE
FIELD DUCT

Attaching Horizontal Ductwork to Unit
All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use a minimum of two (2) inches of insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the building.
When attaching ductwork to a horizontal unit, provide a flexible watertight connection to prevent noise transmission from the unit to the ducts. The flexible

20

connection must be indoors and made out of heavy canvas. Note: Do not draw the canvas taut between the solid
ducts. Figure 6. Attaching Horizontal Airflow Ductwork
UNIT EXTERIOR WEATHERPROOF
THIS SEAM FIELD DUCT
UNIT EXTERIOR WEATHERPROOF
THIS SEAM FIELD DUCT
Condensate Drain Piping
A 3/4-inch female NPT condensate drain connection is provided on the evaporator access panel end of the unit. Provide a trap and fill it with water before starting the unit to avoid air from being drawn through. Follow local codes and standard piping practices when running the drain line. Pitch the line downward away from the unit. Avoid long horizontal runs. See Figure 7, p. 20. Note: Do not use reducing fittings in the drain lines. The condensate drain must be: · Made of 3/4" pipe size · Pitched 1/4" per foot to provide free drainage to
convenient drain system · Trapped · Must be connected to a closed drain system unless
the trap is properly vented Figure 7. Typical Condensate Drain Piping
3/4" PVC OR COPPER TUBING AND FITTINGS
1-1/2" MIN.
1-1/2" MIN.
Air Filter Installation
The packaged unit requires an air filter. The unit does not come with a factory installed filter rack in it, however, two filter frame accessories are offered that will allow the installation of a filter within the unit, BAYFLTR101 & BAYFLTR201. Otherwise a field supplied filter rack must be installed by the installer in the return duct work. Refer to table for field supplied filter racks.
88-A5PH3001-1A-EN

Unit Installation

Table 9. Filter Sizes (field supplied filter rack)

UNIT

NOMINAL CFM

FILTER (a) SIZE (Sq Ft)

FILTER RESISTANCE
("W.C.)

A5PH3024

800

2.67

0.08

A5PH3030

1000

3.33

0.08

A5PH3036

1200

4.00

0.08

A5PH3042

1400

4.67

0.08

A5PH3048

1600

5.33

0.08

A5PH3060

2000

6.67

0.08

(a) Filters must be installed in the return air system. The above square footages are based on 300 F.P.M. face velocity. If permanent filters are used, size per mfg. Recommendation with clear resistance of 0.05"WC.

Important: Air filters and media wheels or plates shall meet the test requirements in UL 900.

Electrical Wiring
Note: This unit is factory wired for 230V. See wiring diagram for 208V conversion.
Electrical Connections
Electrical wiring and grounding must be installed in accordance with local codes or, in the absence of local codes, with the National Electrical Code ANSI/NFPA 70, Latest Revision.
Electrical Power
It is important that proper electrical power be available for the unit. Voltage variation should remain within the limits stamped on the unit nameplate.
Disconnect Switch
Provide an approved weatherproof disconnect within close proximity and within sight of the unit. If disconnect must be mounted to the cabinet, the location shown in Table 12, p. 21 should be the only one considered.
Over Current Protection
The branch circuit feeding the unit must be protected as shown on the unit's rating plate.
Power Wiring
The power supply lines must be run in weather-tight conduit to the disconnect and into the side of the unit control box. Provide strain relief for all conduit with suitable connectors.
Provide flexible conduit supports whenever vibration transmission may cause a noise problem within the building structure.
1. Remove the Control/Heat access panel. Pass the power wires through the Power Entry hole in the end of the unit. See Table 10, p. 21.
2. Connect the high voltage wires to the appropriate contactor terminals. Single phase units use a two

(2) pole contactor and three phase units use three (3) pole contactor. Connect the ground to the ground lug on the chassis. See Table 12, p. 21. Ensure all connections are tight. Table 10. Power Wiring
Run power supply lines through weather-tight conduit and secure to unit with strain relief.
Table 11. Power Connections
Contactor
Unit Ground Lug
Table 12. Mounted Disconnect Location

88-A5PH3001-1A-EN

21

Unit Installation

Table 13. Field Wiring Diagram
PAC K AG ED H EAT PU M P U N IT
UNIT CONTROL BOX

UNIT HEATER AREA

POLARIZED PLUG

ELECTRIC HEATER CONTROL BOX

B COMMON G FAN Y COMPRSSOR W1 1ST STAGE ELECTRIC HEAT W2 2ND STAGE ELECTRIC HEAT O SWITCHOVER VALVE T DEFROST CONTROL 'T' SIGNAL R 24 VOLTS
UNIT LOW VOLTAGE AREA

GROUND WIRE

1 PH 1 PH POWER POWER

3 PH

3 PH

POWER POWER

UNIT

HEATER

NOTE 1,8

TYPICAL THERMOSTAT

FIG. 1 SINGLE POWER ENTRY ACCESSORY CONNECTIONS

UNIT CONTROL BOX
TO COMPR. CONTACTOR

UNIT HEATER AREA
FACTORY PROVIDED FIELD CONNECTED WIRES

ELECTRIC HEATER CONTROL BOX

UNIT LOW VOLTAGE AREA

SPE ACCESSORY KIT

UNIT FUSES

HEATER FUSES

1 PH POWER

GROUND WIRE

3 PH POWER
SINGLE POWR ENTRY

SEE SPEK INSTALLER'S GUIDE FOR ALL OTHER EXAMPLES

FIG. 2 ECONOMIZER ACCESSORY

CONNECTIONS

TO ECONOMIZER

FACTORY PROVIDED

(NOT APPLICABLE TO THE

FIELD INSTALLED WIRES

WCM---F MODELS)

NOTE 9

(BL)

(YL)

(GR)

(PR)

UNIT LOW VOLTAGE AREA

(OR) (OR)

TYPICAL 2-STAGE THERMOSTAT

(BL) B
(GR) G (YL) Y (WH) W1 (WH) W2 (OR) O
(BR) T (RD) R

FIG. 3

OUTDOOR THERMOSTAT ACCESSORY CONNECTIONS

UNIT LOW VOLTAGE AREA

HEATER SECOND STAGE AMBIENT TEMPERATURE LOCKOUT NOTE 7,8
(WH) W 1
(WH) W 2

UNIT LOW VOLTAGE AREA

HEATER AMBIENT TEMPERATURE LOCKOUT NOTE 7,8
(WH) W1 (WH) W2

Notes:
1. Fused disconnect size, power wiring and grounding of equipment must comply with codes..
2. Be sure power supply agrees with equipment and heater nameplate.
3. Low voltage wiring to be 18 AWG minimum conductor.
4. See heater nameplate for current rating of heater used.
5. See unit and heater diagram for electrical connection details.
6. If electric heater accessory is not installed, omit the electric heater, associated power wires and the "W" and "X2" thermostat wires.
7. Fig 3 demonstrates connection of the outdoor thermostat accessory only. For further unit connection details refer to the other figures.
8. The W1 wire is first stage electric heat. If the electric heater accessory has two heating stages, the W2 wire is second stage electric heat.
9. When the BAYECON105/106 or BAYECON205/206 economizer is installed, the BAYRLAY004 relay accessory kit is required to interface the economizer to the heat pump for proper system operation.
10. The BAYSTAT033 outdoor thermostat accessory kit contains a thermostat and a relay. The relay is not required to be used in this application.

TYPICAL THERMOSTAT

OUTDOOR THERMOSTAT ACCESSORY BAYSTAT033A
NOTE 10

TYPICAL THERMOSTAT

OUTDOOR THERMOSTAT ACCESSORY BAYSTAT033A
NOTE 10

Control Wiring (Class II)
Low voltage control wiring should not be run in conduit with power wiring unless Class 1 wire of proper voltage rating is used. Route the thermostat cable or equivalent single leads of No. 18 AWG colored wire from the thermostat subbase terminals through the rubber grommet on the unit. See "Determine Unit Clearances," p. 11 for the control entry (24V Entry) location. Make connections as shown on the wiring diagrams.
Do not short thermostat wires since this will damage the control transformer.
Refer to the table below for recommended wire sizes and lengths for installing the unit thermostat. The total resistance of these low voltage wires must not exceed one (1) ohm. Any resistance in excess of 1 ohm may

cause the control to malfunction because of the excessive voltage drop.

Table 14. Thermostat Wire Size and Maximum Length

Wire Size 18 16 14

Maximum Length (Ft) 75 125 200

Important: Upon completion of wiring, check all electrical connections, including factory wiring within the unit, and make sure all connections are tight. Replace and secure all electrical box covers and access panels before leaving the unit or turning on the power to the unit.

22

88-A5PH3001-1A-EN

Unit Startup
Pre-Start Quick Checklist
 Is the unit properly located and level with the proper clearances? See, "Determine Unit Clearances," p. 11.
 Is the duct work correctly sized, run, taped, insulated, and weatherproofed with proper unit arrangement as shown in the ductwork installation section?
 Is the condensate line properly sized, run, trapped, and pitched and shown in the Condensate Drain Piping section?
 Is the filter of the correct size and quantity? Is it clean and in place? See Air Filter Installation section.
 Is the wiring properly sized and run according to the unit wiring diagram?
 Are all the wiring connections, including those in the unit tight?
 Has the unit been properly grounded and fused with the recommended fuse size?
 Is the thermostat well located, level, and correctly wired? See Electrical Wiring section
 Have the air conditioning systems been checked at the service ports for charge and leak tested if necessary?
 Do the condenser fan and indoor blower turn free without rubbing and are they tight on the shafts?
 Has all work been done in accordance with applicable local and national codes?
 Are all covers and access panels in place to prevent air loss and safety hazards?
 Has the appropiate appearance label been installed as shown in Figure 1, p. 11.
Starting the Unit in Cooling Mode
Note: See the section on Sequence of Operation for a description of the cooling operating sequence.
To start the unit in the cooling mode, set the comfort control to COOL and to a setting below room temperature. The condenser fan motor, compressor and evaporator fan motor will operate automatically. Continuous fan mode during Cooling operation may not be appropriate in humid climates. If the indoor air exceeds 60% relative humidity or simply feels uncomfortably humid, it is recommended that the fan only be used in the AUTO mode.

Operating Pressure Checks
After the unit has operated in the cooling mode for a short period of time, install pressure gauges on the gauge ports of the discharge and suction line valves (behind the Compressor access panel). Check the suction and discharge pressures and compare them to the normal operating pressures provided in the unit's SERVICE FACTS.
Note: Do not use the PRESSURE CURVES from the unit's SERVICE FACTS to determine the unit refrigerant charge. The correct charge is shown on the unit nameplate. To charge the system accurately, weigh in the charge according to the unit nameplate and check subcooling against the Subcooling Charging Table in the SERVICE FACTS.
Voltage Check
With the compressor operating, check the line voltage at the unit (contactor is located behind the Control access panel). The voltage should be within the range shown on the unit nameplate. If low voltage is encountered, check the size and length of the supply line from the main disconnect to the unit. The line may be undersized for the length of the run.
Cooling Shut Down
Set the comfort control to OFF or to a setting above room temperature.
Important: De-energize the main power disconnect ONLY when servicing the unit. Power may be required to keep the heat pump compressor warm and to boil off refrigerant in the compressor.
Starting the Unit in Heating Mode
Note: See the section on Sequence of Operation for a description of the heat pump heating operating sequence.
Check that all grills and registers are open and all unit access panels are closed before start-up.
Set the comfort control above room temperature until achieving a first stage call for heat and set the fan to AUTO or ON.
Heating Shut Down
Set the comfort control to OFF or at a setting below room temperature.

88-A5PH3001-1A-EN

23

Unit Startup

Sequence of Operation
General
Operation of the system heating and cooling cycles is automatic when the system is in the HEAT or COOL functions (the optional automatic changeover thermostat, when in the AUTO position, automatically changes to heat or cool with an appropriate room temperature change). The fan switch can be placed in the ON position, causing continuous evaporator (indoor) fan operation or placed in the AUTO position causing fan operation to coincide with heating or cooling run cycles.
Cooling Mode
Note that the TSH and TSC are contacts that are internal to the indoor thermostat.
With the disconnect switch is in the ON position, current is supplied to the control transformer. The cooling cycle is enabled through the low voltage side of the control transformer to the "R" terminal on the indoor thermostat. With the system switch in the AUTO position and TSC-1 contacts closed, power is supplied to the "O" terminal on the indoor thermostat to the switch-over valve coil (SOV). This energizes the switchover valve (SOV) and places it in the cooling position (it is in the heating position when de-energized).
When the indoor temperature rises 11/2 degrees, TSC-2 contacts close, supplying power to the "Y" terminal on the indoor thermostat, and to the compressor contactor (CC). This starts the outdoor fan motor and compressor. The TSC-2 contacts also provide power to the "G" terminal which provides power to the indoor fan motor.
Heating Mode
With the disconnect switch in the ON position, current is supplied to the control transformer. Starting at the "R" terminal on the indoor thermostat, current goes through the system switch (which is in AUTO position) to the TSH-1 contacts. When closed, these contacts supply power to terminal "Y" on the indoor thermostat. Power is provided from "Y" to the compressor contactor (CC) which starts the compressor and outdoor fan motor. The indoor thermostat contact TSH-1 also provides power to "G"

terminal on the indoor thermostat energizing the indoor fan motor.
Supplementary Heat
The supplementary electric heat is brought on when the indoor temperature drops 11/2 degrees below the thermostat setting. TSH-2 contacts close providing power to the "W" terminal on the indoor thermostat and to the supplementary heater control circuit. An outdoor thermostat may have been added to disallow the second stage (if provided) of electric heat above a selected outdoor temperature. If the outdoor temperature falls below the setting on the outdoor thermostat this additional heater stage will come on. When the outdoor air temperature rises, and the outdoor T-stat setpoint is reached, the system will revert back to first stage electric heating.
When the indoor ambient is satisfied, TSH-2 contacts will open and the unit will revert back to the compressor only heating mode and then off. For emergency heat (use of supplementary electric heat only), and emergency (EMERG) heat switch is provided within the thermostat. When placed in the emergency heat position, it will disable the compressor, bypass the outdoor thermostats, if provided, and engage the supplementary electric heaters and indoor fan.
Demand Defrost Operation
During the heating cycle, the outdoor coil may require a defrost cycle which is determined by the demand defrost control (DFC). This control continuously measures the outdoor coil temperature (CBS) and the outdoor ambient temperature (ODS-B) and calculates the difference or delta-T measurement. When the calculated delta-T is met, the demand defrost control (DFC) opens the circuit to the outdoor fan motor (ODM) and energizes the switch-over valve (SOV), placing the unit in the cooling mode to defrost the outdoor coil. The outdoor coil temperature sensor (CBS) terminates the defrost cycle, or times out after fifteen minutes in defrost, the (DFC) energizes the outdoor fan motor (ODM) and twelve seconds later deenergizes the (SOV), which returns the unit to the heating mode. Supplementary electric heat, if provided, is brought on to control indoor temperature during the defrost cycle.

24

88-A5PH3001-1A-EN

Unit Startup

Final Installation Checklist
Important: Perform a final unit inspection to be sure that factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other when the unit runs. Also be sure that wiring connections are tight and properly secured.
 Does the unit run and operate as described in the Sequence of Operation section in response to the room thermostat?
 Are the condenser fan and indoor blower operating correctly with proper rotation and without undue noise?
 Is the compressor operating correctly and has the system been checked with a charging chart?
 Has the voltage and running current been checked to determine if it is within limits?
 Has the thermostat been checked for calibration and the air discharge grills adjusted to balance the system?
 Has the ductwork been checked for air leaks and condensation?
 Has the furnace manifold pressure been checked and adjusted if necessary?
 Has the heating air temperature rise been checked?  Has the unit been checked for tubing and sheet
metal rattles? Are there any other unusual noises to be checked?  Has all mitigation actions been verified?  Are all covers and panels in place and properly fastened?  Has the owner been instructed on the proper operation and maintenance of the unit? Be sure to leave this manual with the owner.
Verification of Mitigation Actions
After installation, the installer must verify that the refrigerant leak detection system actuates all mitigating actions.
The test can be initiated by shorting the two test pins on the header of the mitigation control board inside of the unit. The mitigating actions will continue for approximately 5 minutes. See Figure 8, p. 25 below.

Figure 8. MCB
Short these pins to test the Amber and Green LED refrigerant detection system diagnostic indicators If any of the mitigating actions are not actuated by the system during the test, please check the following: · All field wiring connections should be checked against the diagrams in the section of this manual. · The diagnostic indicators on the mitigation control board should be checked against the diagnostic codes given in below. · Scan the QR code below for more information on field troubleshooting of the refrigerant leak detection system.

Table 15. MCB Diagnostic Code Table

Condition
Idle or Off Startup
No Active Alarm Active Alarm (Refrigerant Leak, Sensor Communicating Error, or
Sensor Error) Past Refrigerant Detected Alarm
Past Sensor Communication Error Past Sensor Error

Green LED Off On
Slow Flash
3 Flash
4 Flash 5 Flash 6 Flash

Amber LED Off On On
On
On On On

88-A5PH3001-1A-EN

25

Unit Startup

Maintenance
Owner Maintenance
Some of the periodic maintenance functions of the unit can be performed by the owner; this includes replacing the disposable or cleaning the permanent air filters, cleaning the unit cabinet, cleaning the condenser coil, and conducting a general unit inspection on a regular basis.
Filters
When the system is in constant operation, inspect the filters at least once each month.
If the unit has disposable-type filters, replace them with new filters of the same type and size. Do not attempt to clean disposable filters.
Permanent-type filters can be cleaned by washing them with a mild detergent and water. Make sure that the filters are thoroughly dry before reinstalling them in the unit (or duct system).
Note: It may be necessary to replace permanent filters annually if washing fails to clean the filter or if the filter shows signs of deterioration. Be sure to use the same type and size as was originally installed.
Condenser Coil
Be sure to keep all vegetation and debris away from the condenser coil area.
Service Maintenance
Cooling Season
To keep the unit operating safely and efficiently, the manufacturer recommends that a qualified service technician check the entire system at least once each year or sooner if needed. The service technician should examine these areas of the unit:
· filters (for cleaning or replacement) · motors and drive system components · economizer gaskets (for possible replacement) · safety controls (for mechanical cleaning) · electrical components and wiring (for possible
replacement and connection tightness) · condensate drain (for proper sealing and cleaning) · unit duct connections (to see that they are
physically sound and sealed to the unit casing) · unit mounting support (for structural integrity) · the unit (for obvious unit deterioration)
Heating Season
Complete the following unit inspections and service routines at the beginning of each heating season.

· Visually inspect the unit to ensure that the airflow required for combustion and condenser coil is not obstructed from the unit.
· Inspect the control panel wiring to verify that all electrical connections are tight and that the wire insulation is intact.
Indoor Airflow Motor Speed Tap Setting
The units are factory set to medium low speed. If an electric Heater is installed refer to the electric heater nameplate for minimum airflow settings.
Defrost Control
Defrost Control
The demand defrost control measures heat pump outdoor ambient temperature with a sensor located outside the outdoor coil. A second sensor located on the outdoor coil is used to measure the coil temperature. The difference between the ambient and the colder coil temperature is the difference or delta-T measurement. This delta-T measurement is representative of the operating state and relative capacity of the heat pump system. Measuring the change in delta-T determines the need for defrost. The coil sensor also serves to sense outdoor coil temperature for termination of the defrost cycle.
Fault Detection
A fault condition is indicated by the flashing Fault LED light on the defrost control board located inside the heat pump control box.
In normal operation, the status LED will flash once each second when idle or twice each second with a call for heating or cooling.
PIN Identification
1. TEST_COMMON (Shorting any of the other pins to this pin causes the function of the other pin to be executed. Leaving this pin open results in the normal mode of operation).
2. FRC_DFT = Forced Defrost (Short TEST_COMMON to this pin speeds up all defrost. Remove the short after defrost initiates.
Defrost Control Checkout
Normal operation requires:
a. Status LED on board flashing 1 time/second in standby or 2 times/second with a call for heating or cooling.
b. 24V AC between R & B
c. 24V AC between Y, Y0 & B with unit operating
d. Defrost initiation when FRC_DFT pin is shorted to TEST_COMMON pin.

26

88-A5PH3001-1A-EN

Unit Startup

D158286B
Test Sensors Using the chart in Table 16, p. 27, locate (as close as possible) the actual sensor temperature. The measured resistance should be relatively close to the resistance value shown in the chart.
Table 17. Demand Defrost Quick Specifications
COMPRESSOR MNEMONIC NO CNT GROUP NOMENCLATURE (a) SUPERSEDURE CNT OD FAN TYPE  PSC/ECM
DEFROST ENABLED: Y = ON COIL TEMPERATURE = DEFROST PERMIT: Y = ON COIL TEMPERATURE =
88-A5PH3001-1A-EN

Table 16. Defrost Control Thermistor Table

TEMP °F
-15.00 -10.00 -5.00
0.00 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 50.00 55.00 60.00 65.00 70.00 75.00 80.00 85.00 90.00 95.00 100.00 105.00 110.00 115.00 120.00 125.00 130.00 135.00

TEMP °C
-26.11 -23.33 -20.56 -17.78 -15.00 -12.22 -9.44 -6.67 -3.89 -1.11
1.67 4.44 7.22 10.00 12.78 15.56 18.33 21.11 23.89 26.67 29.44 32.22 35.00 37.78 40.56 43.33 46.11 48.89 51.67 54.44 57.22

THERMISTOR RESISTANCE
(OHMS) 135976 115112 97745 83247 71108 60916 52333 45076 38927 33703 29253 25452 22198 19405 17002 14930 13138 11586 10238
9065 8043 7150 6368 5682 5079 4548 4079 3665 3298 2972 2683

Vo (Volts)
2.50 2.40 2.29 2.17 2.05 1.93 1.81 1.69 1.56 1.45 1.33 1.22 1.12 1.02 0.93 0.85 0.77 0.70 0.63 0.57 0.52 0.47 0.42 0.38 0.35 0.31 0.28 0.26 0.23 0.21 0.19

Example:
Sensor temp. = 19°F Measured Resistance = 46K ohms This sensor is good since the measured value is relatively close to the chart value.

SCROLL 07824
G01 / G04 / G06 NA PSC
1-SPD 52° F (b)
32° F

SCROLL 07825
G02 / G07 NA ECM
1-SPD 52° F 32° F
27

Unit Startup

Table 17. Demand Defrost Quick Specifications (continued)
COMPRESSOR MIN DEFROST TIME (MINUTES) TARGET DEFROST TIME (MINUTES) MAX TIME OVERRIDE (MINUTES) DEFROST TERMINATE COIL TEMPERATURE (Factory Setting) DEFROST HI TERMINATE COIL TEMPERATURE (Cut Jumper 2) SOV SWITCH-OVER DELAY AFTER DEFROST TERM. (SECONDS) DEFEAT SWITCH-OVER DELAY (SECONDS) (Cut Jumper 2) LOW AMBIENT HEAT PUMP LOCK OUT LOW AMBIENT HEAT PUMP RESUME LPCO INPUT TO CONTROL LPCO BYPASS IN/OUT DEFROST (MINUTES)
(a) GROUP suffix for drawing number D159982 (b)  (EQUAL OR LESS THAN)

SCROLL 1 4 15
47° F 70° F
12
0 -7° F 3° F YES
3

SCROLL 1 4 15
47° F 70° F
12
0 -7° F 3° F YES
3

Table 18. LED Fault Codes

LED FAULT CODES

FAULT DESCRIPTION

DEFROST CONTROL BEHAVIOR

Ambient Temp Sensor is
1 FLASH out of range (open/ shorted)

Initiate a 15 minute forced Defrost after every 60 minutes of runtime. See Note 1 & 2

2 FLASH

Coil Temp Sensor is out of range (open/shorted)

Initiate a 15 minute forced Defrost after every 60 minutes of runtime. See Note 2

3 FLASH

Low Pressure Switch is open

3 flash goes away when/if LPCO closes

Hard Lock Out (can only
4 FLASH be cleared with power cycle)

Occurs after 9th trip of LPCO. Note 6

5 FLASH Soft Lock Out

5 flash goes away after soft lockout periods expires. See Note 2

6 FLASH

Defrost cycles too close together

Heating Short Cycle Fault triggers 6 flash & 5 flash codes. Follow Soft Lock-out sequence until Hard Lockout (4 flash) or can clear if conditions no longer exist

7 FLASH

In Timed Defrost mode. Check Ambient sensor placement and verify SOV is operating properly.

Implied sensor fault (calibration/range) set after defrost and reset after 15 minutes run time after defrost. See Note 4

8 FLASH

In Timed Defrost mode. Check Coil sensor placement and verify SOV is operating properly.

Outdoor temperature is below -7° F. See Note 5.

9 FLASH

Low Ambient Soft Lockout Outdoor temperature dropped below 3°F. (OFF at -7° F/ ON at 3°F)

Outdoor temperature is below -7° F. See Note 5.

1. Initiate Adaptive/Timed Defrost so long as Coil Temp Sensor is functional. Monitor actual time in

defrost and add or reduce run time until next forced defrost based on achieving a 4 minute (+/- 1) defrost period.
2. This Defrost control utilizes a safety method called "Inferred LPCO". If both Coil Temp Sensor and Ambient Temp Sensor have failed, initiate a 15 minute forced defrost after every 60 minutes of run time. This is in conjunction with the normal Low Pressure trip definitions. An "Inferred LPCO" trip is defined as: A heating cycle that enters defrost in 15 minutes or less and then enters another defrost in the same heating call within 15 minutes of the last defrost call -does not complete a learning algorithm. This could be caused by a condenser fan motor failure or other reasons. The first soft lockout occurs on the 4th defrost that was entered before the learning routine could complete in the same heating call. It is announced with a 5 flash and a 6 flash fault. After this first 15 minute soft lockout, the system will return to normal operation. Should this continue operating in this manner, there will be a 30 minute soft lockout and so on. At the end of the lockout process, if a hard lock is necessary --a flash will be announced and system operation is interrupted. If the ambient temperature climbs above 40 degrees F for more than 30 minutes, this clears this fault count and resumes normal operation.
3. Do not track if Y cycles off or if defrost takes 15 minutes (Max Time Override). Ambient Sensor reading is monitored at the end of defrost and should not deviate more than +/-5° F. Ambient Sensor must report a lower temperature than the Coil Sensor immediately after defrost (Coil Sensor should always be higher than Ambient Sensor when defrost terminates).
4. Do not track if Y cycles off or if defrost takes 15 minutes (Max Time Override). Coil Sensor reading is monitored at the end of defrost and reading must

28

88-A5PH3001-1A-EN

Unit Startup

be less than Ambient Sensor after 15 minutes of run time.
5. Once ambient drops to -7° F or lower, wait 5 minutes before soft lockout begins. During soft lock out the Y signal passes through to the X2 output. Resume operation when ambient temperature rises to 3° F or higher and after a 15 minute soft lockout period expires.
6. During Hard Lockout, the X2 relay opens so that the Y signal does not pass through.

LPCO Inferred
LPCO
1st Trip
2nd Trip
3rd Trip

HEATING Mode
15 minute soft lock-out period 30 minute soft lock-out period 45 minute soft lock-out period

Flash Code
5 and 6 flash 5 and 6 flash 5 and 6 flash

4th - 8th Trip

18 hour soft lock-out period

5 and 6 flash

9th Trip
(a)

Hard lock-out

4 flash

(a) If LPCO is open, a 3 flash can accommodate any of the faults above and will clear when the LPCO closes.

LPCO

COOLING Mode

Flash Code

1st Trip 15 minute soft lock-out period

5 and 6 flash

2nd Trip 30 minute soft lock-out period

5 and 6 flash

3rd Trip 45 minute soft lock-out period

5 and 6 flash

4th - 8th Trip

18 hour soft lock-out period

5 and 6 flash

* Once the LPCO closes, the 3 flash fault will not continue showing -- only 5 flash if in the soft lock-out period.

88-A5PH3001-1A-EN

29

Pressure Curves

DISCHARGE PRESSURE (PSIG)

Figure 9. Pressure Curves for A5PH3024

550 500 450

Cooling
750 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350 (4)

(3)

300

250

200

(1)

40

60

80

100

(2)
120

400 375 350

Heating
750 CFM
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

325

300

275

250

225

200 -5

5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

(3)

140

135 (5)
130

125

120

115
(1)
110

40

60

80

OUTDOOR TEMPERATURE (Degree F)

(2)

100

120

140 130 120

INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

110

100

90

80

70

60

50

40

30 -5 5 15 25 35 45 55 65

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 750 CFM CFM IS 331 PSIG. (5) SUCTION PRESSURE @ 750 CFM CFM IS 131 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. A5PH3024

30

88-A5PH3001-1A-EN

DISCHARGE PRESSURE (PSIG)

SUCTION PRESSURE (PSIG)

Pressure Curves

Figure 10. Pressure Curves for A5PH3030

550 500 450

Cooling
1000 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350 (4)

(3)

300

250

200

(1)

40

60

80

100

(2)
120

400 375 350

Heating
1000 CFM
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

325

300

275

250

225

200 -5 5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

(3)

140 (5)

135

130

125

120

115
(1)
110

40

60

80

OUTDOOR TEMPERATURE (Degree F)

140

INDOOR ENTERING

130

DRY BULB CURVES TOP TO BOTTOM

120

80, 70, AND 60 DEG F.

(2)

110

100

90

80

70

60

50

40

30

100

120

-5

5 15 25 35 45 55 65

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 1000 CFM CFM IS 317 PSIG. (5) SUCTION PRESSURE @ 1000 CFM CFM IS 137 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. A5PH3030

88-A5PH3001-1A-EN

31

Pressure Curves

DISCHARGE PRESSURE (PSIG)

SUCTION PRESSURE (PSIG)

Figure 11. Pressure Curves for A5PH3036

550 500 450

Cooling
1150 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350 (4)

(3)

300

Heating

1150 CFM

400

INDOOR ENTERING

(2)

375

DRY BULB CURVES TOP TO BOTTOM

80, 70, AND 60 DEG F.

350

325

300

275

250

250

225

200

(1)

200

40

60

80

100

120

-5 5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

140

(3)

135 (5)

130

125

120

115

110

(1)

40

60

80

OUTDOOR TEMPERATURE (Degree F)

140 130 120

INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

(2)

110

100

90

80

70

60

50

40

30

100

120

-5

5 15 25 35 45 55 65

OUTDOOR TEMPERATURE (Degree F)
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 1150 CFM CFM IS 316 PSIG. (5) SUCTION PRESSURE @ 1150 CFM CFM IS 133 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. A5PH3036

32

88-A5PH3001-1A-EN

DISCHARGE PRESSURE (PSIG)

SUCTION PRESSURE (PSIG)

Pressure Curves

Figure 12. Pressure Curves for A5PH3042

550 500 450

Cooling
1450 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350 (4)

(3)

300

Heating

1450 CFM

400

INDOOR ENTERING

(2)

375

DRY BULB CURVES TOP TO BOTTOM

80, 70, AND 60 DEG F.

350

325

300

275

250

250

225

200

(1)

200

40

60

80

100

120

-5 5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

(3)

140 (5)
135

130

125

120

115

110

(1)

40

60

80

OUTDOOR TEMPERATURE (Degree F)

140

INDOOR ENTERING

130

DRY BULB CURVES TOP TO BOTTOM

120

80, 70, AND 60 DEG F.

(2)

110

100

90

80

70

60

50

40

30

100

120

-5

5 15 25 35 45 55 65

OUTDOOR TEMPERATURE (Degree F)
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 1450 CFM CFM IS 313 PSIG. (5) SUCTION PRESSURE @ 1450 CFM CFM IS 133 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. A5PH3042

88-A5PH3001-1A-EN

33

Pressure Curves

DISCHARGE PRESSURE (PSIG)

SUCTION PRESSURE (PSIG)

Figure 13. Pressure Curves for A5PH3048

550 500 450

Cooling
1650 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350 (4)

(3)

300

Heating

1650 CFM

400

(2)

375

INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM

80, 70, AND 60 DEG F.

350

325

300

275

250

250

225

200

(1)

200

40

60

80

100

120

-5 5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

140

(3)

135 (5)
130

125

120

115

110

(1)

40

60

80

OUTDOOR TEMPERATURE (Degree F)

140 130 120

INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

(2)

110

100

90

80

70

60

50

40

30

100

120

-5

5 15 25 35 45 55 65

OUTDOOR TEMPERATURE (Degree F)
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 1650 CFM CFM IS 323 PSIG. (5) SUCTION PRESSURE @ 1650 CFM CFM IS 131 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. A5PH3048

34

88-A5PH3001-1A-EN

DISCHARGE PRESSURE (PSIG)

SUCTION PRESSURE (PSIG)

Pressure Curves

Figure 14. Pressure Curves for A5PH3060

550 500 450

Cooling
1950 CFM
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

400

350

(4)

(3)

300

Heating

1950 CFM

400

INDOOR ENTERING

(2)

375

DRY BULB CURVES TOP TO BOTTOM

80, 70, AND 60 DEG F.

350

325

300

275

250

250

225

200

(1)

200

40

60

80

100

120

-5 5 15 25 35 45 55 65

170 165 160

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

155

150

145

140

(3)

135 (5)
130

125

120

115
(1)
110

40

60

80

OUTDOOR TEMPERATURE (Degree F)

140 130 120

INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 DEG F.

(2)

110

100

90

80

70

60

50

40

30

100

120

-5

5 15 25 35 45 55 65

OUTDOOR TEMPERATURE (Degree F)
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT COLUMN (4).

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION (4) DISCHARGE PRESSURE @ 1950 CFM CFM IS 306 PSIG. (5) SUCTION PRESSURE @ 1950 CFM CFM IS 131 PSIG.

ACTUAL: DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

DWG.NO. A5PH3060

88-A5PH3001-1A-EN

35

Indoor Fan Performance (230v)

A5PH3024A1

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

Motor Speed

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Watts

63 [63]

70 [71]

77 [77]

-

-

-

-

-

-

-

-

LOW

CFM

899 [890]

820 [811]

755 [747]

-

-

-

-

-

-

-

-

MED-LOW

Watts

-

83 [84]

91 [91]

97 [98]

-

-

-

-

-

-

-

(a)

CFM

-

886 [877]

818 [810]

756 [749]

-

-

-

-

-

-

-

Watts

-

-

-

127 [127]

134 [135]

142 [143]

-

-

-

-

MED-HIGH

CFM

-

-

-

886 [877]

820 [812]

748 [741]

-

-

-

-

Watts

-

-

-

-

-

195 [195]

204 [204]

214 [214]

-

-

-

HIGH

CFM

-

-

-

-

-

867 [858]

798 [790]

741 [734]

-

-

-

Note: Airflow must not exceed 900 CFM due to condensate blowoff. (a) Factory Default Settings.

A5PH3030A1

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

Motor Speed

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Watts

119 [120]

128 [128]

136 [137]

145 [145]

-

-

-

-

-

-

-

LOW

CFM

1065

1012

[1054] [1002]

951 [942]

894 [855]

-

-

-

-

-

-

-

MED-LOW

Watts

-

157 [158]

167 [167]

175 [176]

186 [186]

196 [197]

-

-

-

-

-

(a)

CFM

-

1102

1046

[1091] [1035]

993 [983]

938 [928]

877 [868]

-

-

-

-

-

Watts

-

-

-

-

240 [242]

252 [253]

263 [264]

273 [274]

-

-

-

MED-HIGH

CFM

-

-

-

-

1085

1032

[1074] [1022]

978 [969]

934 [925]

-

-

-

Watts

-

-

-

-

-

308 [308]

319 [319]

329 [329]

340 [340]

350 [350]

-

HIGH

CFM

-

-

-

-

-

1116 [1105]

1069 [1058]

1031 [1021]

968 [958]

926 [917]

-

Note: Airflow must not exceed 1125 CFM due to condensate blowoff. (a) Factory Default Settings.

A5PH3036A1

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

Motor Speed

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Watts

145 [146]

152 [153]

159 [159]

-

-

-

-

-

-

-

-

LOW

CFM

1145

1098

1047

[1133] [1087] [1037]

-

-

-

-

-

-

-

-

MED-LOW

Watts

195 [196]

202 [203]

210 [211]

218 [220]

227 [228]

-

-

-

-

-

-

(a)

CFM

1268

1226

1177

1125

1072

[1255] [1213] [1166] [1114] [1062]

-

-

-

-

-

-

Watts

-

MED-HIGH

CFM

-

-

326 [326]

339 [339]

350 [350]

360 [360]

369 [369]

381 [381]

392 [392]

401 [401]

-

-

1347 [1334]

1304 [1291]

1266 [1253]

1225 [1213]

1176 [1164]

1133 [1122]

1093 [1082]

1059 [1048]

-

Watts

-

-

-

-

342 [343]

351 [353]

361 [363]

372 [373]

-

-

-

HIGH

CFM

-

-

-

-

1308 [1295]

1261 [1248]

1216 [1204]

1172 [1160]

-

-

-

Note: Airflow must not exceed 1350 CFM due to condensate blowoff. (a) Factory Default Settings.

36

88-A5PH3001-1A-EN

Indoor Fan Performance (230v)

A5PH3042A1 Motor Speed

LOW

Watts CFM

MED-LOW
(a)

Watts CFM

MED-HIGH

Watts CFM

HIGH

Watts CFM

0.0 257 [262] 1411 [1397]
-
-
-
-
-
-

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

263 [268]

272 [277]

282 [288]

292 [298]

-

-

-

-

-

1355

1295

1239

1189

[1342] [1282] [1226] [1177]

-

-

-

-

-

324 [330]

335 [342]

346 [353]

358 [365]

370 [377]

382 [390]

393 [401]

-

-

1572

1536

[1556] [1521]

1499 [1484]

1462 [1447]

1429 [1415]

1392 [1378]

1355 [1341]

-

-

-

386 [394]

398 [406]

410 [418]

421 [429]

431 [440]

438 [447]

-

-

-

1581 [1565]

1538 [1523]

1497 [1482]

1461 [1446]

1424 [1409]

1386 [1373]

-

-

-

-

-

540 [551]

552 [563]

565 [576]

575 [586]

-

-

-

-

-

1576 [1560]

1533 [1518]

1496 [1481]

1458 [1443]

-

-

Note: Airflow must not exceed 1575 CFM due to condensate blowoff. (a) Factory Default Settings.

A5PH3048A1 Motor Speed

LOW

Watts CFM

MED-LOW
(a)

Watts CFM

MED-HIGH

Watts CFM

HIGH

Watts CFM

0.0 359 [367] 1649 [1632]
-
-
-
-
-
-

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

371 [378]

383 [390]

404 [412]

406 [414]

418 [426]

429 [438]

440 [449]

-

-

1616

1581

[1600] [1565]

1516 [1501]

1509 [1494]

1475 [1460]

1441 [1427]

1408 [1394]

-

-

475 [485]

487 [497]

499 [509]

512 [522]

524 [534]

537 [548]

549 [560]

563 [574]

-

1803

1774

[1785] [1756]

1742 [1725]

1709 [1692]

1678 [1661]

1644 [1628]

1612 [1596]

1578 [1562]

-

-

536 [547]

559 [570]

562 [573]

575 [586]

588 [600]

600 [612]

612 [625]

-

-

1789 [1771]

1731 [1713]

1724 [1707]

1693 [1676]

1661 [1645]

1630 [1614]

1600 [1584]

-

-

-

-

601 [613]

613 [625]

631 [644]

643 [656]

647 [660]

-

-

-

-

1806 [1788]

1769 [1751]

1728 [1711]

1688 [1671]

1652 [1635]

-

Note: Airflow must not exceed 1800 CFM due to condensate blowoff. (a) Factory Default Settings.

A5PH3060A1 Motor Speed

LOW

Watts CFM

MED-LOW
(a)

Watts CFM

MED-HIGH

Watts CFM

HIGH

Watts CFM

0.0 515 [511] 1857 [1875]
-
-
-
-
-
-

EXTERNAL STATIC PRESSURE (IN.WG) Horizontal Airflow [Down Airflow]

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

523 [521]

533 [533]

544 [546]

554 [558]

-

-

-

-

-

1831

1800

1766

1737

[1841] [1805] [1766] [1730]

-

-

-

-

-

632 [631]

644 [643]

655 [654]

666 [665]

677 [676]

689 [687]

699 [697]

714 [712]

728 [726]

2059

2020

[2070] [2031]

1990 [2001]

1960 [1971]

1928 [1939]

1895 [1905]

1871 [1881]

1828 [1838]

1786 [1796]

759 [758]

769 [771]

779 [786]

788 [801]

803 [815]

816 [829]

830 [839]

845 [849]

860 [858]

2058

2032

[2063] [2034]

2003 [1999]

1974 [1965]

1943 [1931]

1911 [1894]

1877 [1869]

1843 [1846]

1807 [1795]

910 [908]

921 [919]

932 [930]

941 [942]

956 [960]

969 [971]

983 [988]

997 [997]

1010 [1001]

2177

2152

[2184] [2150]

2127 [2104]

2105 [2073]

2071 [2027]

2041 [1998]

2009 [1961]

1975 [1937]

1940 [1905]

Note: Airflow must not exceed 2250 CFM due to condensate blowoff. (a) Factory Default Settings.

1 -
1 -
1 741 [739] 1748 [1758] 874 [872] 1771 [1759] 1021 [1018] 1903 [1890]

88-A5PH3001-1A-EN

37

Refrigerant Circuit

INDOOR COIL

COOLING

EXPANSION VALVE BULB

SWITCHOVER VALVE

SCHRADER VALVE LO
COMPRESSOR

LPCO

SOV COIL
EQUALIZER LINE

EXPANSION VALVE BULB
OUTDOOR COIL

SCHRADER VALVE HI
EQUALIZER LINE
SCHRADER VALVE LIQUID

HPCO

INDICATES DIRECTION OF REFRIGERATION FLOW

INTERNALLY CHECKED EXPANSION VALVE

LIQUID LINE

DISTRIBUTOR
INTERNALLY CHECKED EXPANSION VALVE
BI-FLOW DRIER

INDOOR COIL

HEATING

EXPANSION VALVE BULB

SWITCHOVER VALVE

SCHRADER VALVE LO
COMPRESSOR

LPCO

SOV COIL
EQUALIZER LINE

EXPANSION VALVE BULB
OUTDOOR COIL

SCHRADER VALVE HI
EQUALIZER LINE
SCHRADER VALVE LIQUID

HPCO

INDICATES DIRECTION OF REFRIGERATION FLOW

INTERNALLY CHECKED EXPANSION VALVE

LIQUID LINE

DISTRIBUTOR
INTERNALLY CHECKED EXPANSION VALVE
BI-FLOW DRIER

38

88-A5PH3001-1A-EN

Troubleshooting Chart
P-PRIMARY CAUSES / S-SECONDARY CAUSES

Power Supply High Voltage Wiring
Compr. I0L Run Capacitor Start capacitor
Start Relay Contactor Contacts Low Voltage Wiring Control Transformer
Contactor Coil Low Voltage Fuse Stuck Compressor Ineffecient Compressor Refrigerant Undercharge Refrigerant Overcharge Excessive Evap. Load Noncondensables Restricted O.D. Airflow O.D. Air Recirculation TXV Stuck Open
Low Superheat High Superheat Restricted I.D. Airflow Ref. Circuit Restrictions Mitigation System

SYSTEM FAULTS

REFRIGERANT CIRCUIT Liquid Pressure too High
Liquid Pressure too Low
Suction Pressure too High
Suction Pressure too Low Liquid Refrigerant Floodback (TXV System)
I.D. Coil Frosting
Compressor Runs Inadequate or No Cooling

P

SPS

S

SP

S

S

S

S

PP

SS

S

SPS

SS

P

P

S

PS

SP

PSSS

SPS

ELECTRICAL

Compressor & O.D. Fan Do Not Start

PP

SSPPP

Compressor will not Start but O.D. Fan Runs

P SPPP

S

O.D. Fan will Not Start

P

P

Compressor Hums but will Not Start

P

PPPS

S

Compressor Cycles on IOL

P SPPPS

PSP SSSS S

I.D. Blower willnot Start P S (a) See, Verification of Mitigation Actions, p. 25

SP

P

P(a)

S

S

88-A5PH3001-1A-EN

39

Important Product Information
Packaged Unit Serial Number_____________________________________________________ Packaged Unit Model Number_____________________________________________________ Date of Installation_______________________________________________________________ Dealer___________________________________________________________________________ Service Information Call your installing dealer if the unit is inoperative. Before you call, always check the following to be sure service is required: 1. Be sure the main switch that supplies power to the unit is in the ON position. 2. Replace any burned-out fuses or reset circuit breakers. 3. Be sure the thermostat is properly set. Service Phone ___________________________________________________________________

About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com.

The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.

The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

88-A5PH3001-1A-EN 08 Nov 2024 Supersedes (New)

©2024
References

PDFlib PDI 9.2.0 (C /Win64)