AMERISTAR E4AH5E48A1K30A High Efficiency Air Handlers Installation Guide

Installation Manual
High Efficiency Air Handlers
2-5 Ton Capacity
R-410A TXV Inside
E4AH5E24A1J30A / E4AH5E36A1J30A / E4AH5E48A1K30A / E4AH5E60A1K30A

NOTE: Appearance of unit may vary.
Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only.
All phases of this installation must comply with National, State and Local Codes.
This document is customer’s property and is to remain with this unit. Please return it to customer with service information upon completion of work.
These instructions are intended as an assist to qualified and licensed personnel for proper installation, adjustment and operation of ECM air handler units. Read it thoroughly before attempting installation or service work.
Failure to follow these instructions may result in fire, electrical shock, property damage, personal injury or death.
The instructions do not cover all varitions in systems or provide for every possible contingency to be met in connection with the installation.

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www.ahridirectory.org| www.ahridirectory.org

88-E4AH5001-1B-EN

Safety

Read the following safety instructions before installing the unit or doing service work.
WARNING: may cause personal death or serious injury.
CAUTION: may lead to injury or structural damage under some conditions.
WARNING
FIRE HAZARD!
WITH HEAT PUMP INSTALLATIONS, SOME ELECTRIC HEATERS ARE POSITION SENSITIVE. USE ONLY APPROVED HEATER TO UNIT COMBINATIONS PER NAMEPLATE AND SET BLOWER AIRFLOW SPEED PER NAMEPLATE INSTRUCTIONS.
WHEN HEATERS COME SUPPLIED WITH CIRCUIT BREAKERS, USE 240/208 VOLT SUPPLY POWER WITH 120 VOLTS (NOMINAL) TO GROUND.
FAILURE TO FOLLOW THE ABOVE COULD RESULT IN DEATH, SERIOUS INJURY OR EQUIPMENT DAMAGE.
WARNING
PRESSURIZED REFRIGERANT! —
IMPROPER REFRIGERANT!
SYSTEM CONTAINS OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE PRESSURE BEFORE OPENING THE SYSTEM.
DO NOT USE NON-APPROVED REFRIGERANTS OR REFRIGERANT SUBSTITUTES OR REFRIGERANT ADDITIVES. SEE OUTDOOR UNIT NAMEPLATE FOR REFRIGERANT TYPE.
FAILURE TO FOLLOW THE ABOVE COULD RESULT IN DEATH, SERIOUS INJURY OR EQUIPMENT DAMAGE.
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
WARNING
FLAMMABLE VAPORS!
THE USE AND STORAGE OF GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN OPEN CONTAINERS IN THE VICINITY OF THIS FURNACE CAN RESULT IN EXPLOSION OR FIRE.
FAILURE TO FOLLOW THE ABOVE COULD RESULT IN DEATH OR SERIOUS INJURY, OR PROPERTY DAMAGE.
WARNING
HAZARDOUS VOLTAGE!
DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING.
INSURE THAT ALL MOTOR CAPACITORS HAVE DISCHARGED STORED VOLTAGE.
FAILURE TO DO THE ABOVE COULD RESULT IN DEATH OR SERIOUS INJURY.
WARNING
SHARP EDGES!
AVOID CONTACT WITH COlL FINS AND SHEET METAL EDGES.
FAILURE TO FOLLOW THE ABOVE COULD RESULT IN DEATH OR SERIOUS INJURY.
WARNING
FIBERGLASS WOOL EXPOSURE!
REFER TO OWNER’S INFORMATION MANUAL PROVIDED WITH THIS UNIT FOR PROPER INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS.
DISTURBING THE INSULATION IN THIS PRODUCT DURING INSTALLATION, MAINTENANCE OR REPAIR WILL EXPOSE YOU TO AIRBORNE PARTICLES OF GLASS WOOL FIBERS AND CERAMIC FIBERS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER THROUGH INHALATION. GLASS WOOL FIBERS COULD ALSO CAUSE RESPIRATORY, SKIN OR EYE IRRITATION.
WARNING
USE COPPER CONDUCTORS ONLY!
UNIT TERMINALS ARE NOT DESIGNED TO ACCEPT OTHER TYPES OF CONDUCTORS.
FAILURE TO DO THE ABOVE COULD RESULT IN EQUIPMENT DAMAGE.
WARNING
ROTATING FAN BLADE!
DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING.
FAILURE TO DISCONNECT POWER BEFORE SERVICING CAN CAUSE SEVERE PERSONAL INJURY OR DEATH.

Dimensions

NOTE: 25” CLEARANCE IS REQUIRED IN THE FRONT OF THE UNIT FOR FILTER AND COILMAINTENANCE Table 1. Unit Dimensions

Connection**
E4AH5E24A1J30A
E4AH5E36A1J30A| 46-1/2| 21| 21| 19-1/4| 3/8| 3/4
E4AH5E48A1 K30A
E4AH5E60A1 K30A| 56| 24-1/2| 21| 22-3/4| 3/8| 7/8

Select a solid and level site, keep enough space for proper installation and maintenance.
Adjust motor speed tap on indoor main control board (MCB) to select correct air flow according to blower performance table.

Applications

3.1 Vertical up-flow and Horizontal right-flow
Vertical up-flow and horizontal right-flow configurations are the factory settings on all models.
If return air is to be ducted, install duct flush with floor. Use fireproof resilient gasket 1/8’’ to 1/4’’ thick between the ducts, unit and floor. Set unit on floor over opening.
IMPORTANT
Lightly tighten the drain connections so they do not leak.
Using excessive force may cause damage to the drain connections. Torque applied to drain connections should not exceed 10.ft.lbs. 3.1.1 Installation of drainpipe

1. When the air handler is installed vertically, please block the upper drainage hole with a cover. The lower right of the drainage hole is connected with the drainage pipe, and the lower left of the drainage hole is connected with the overflow pipe that should be exposed to the air; lf the pipe ① is draining, which means the pipe ② is blocked. Contact maintenance personnel as soon as possible.
2. When installing the air handler lying down, the upper drainage hole is covered the lower left of the drainage hole is connected with the drainage pipe, the lower right of the drainage hole is connected with the overflow pipe that should be exposed to the air. lf the pipe ① is draining, which means the pipe ② is blocked. Contact maintenance personnel as soon as possible.
   

3.2 Installation of drain pipe
Keep the coil connections sealed until refrigerant connections are made. Refer to condensing unit installation instructions for details on pipe size and insulation.

• Coil is shipped with nitrogen. Evacuate the system before charging with refrigerant.

• Make sure the refrigerant pipes layout do not block service access.

• Purge the refrigerant pipes and indoor coil with dry nitrogen while brazing.

• Use a wet rag or an approved heat paste to protect the TXV sensing bulb during the brazing process.
  Condensate Drain Connection

• Use a thin layer of Teflon paste, silicone or Teflon tape when making drain fitting connections.

• Do not over tighten fittings resulting in splitting pipe connections on the drain pan.
  

• Make sure the drain pipes layout do not block service access. Minimum clearance of 25’’ is required for filter, coil or blower removal and service access.

• Ensure the unit is level or pitched slightly toward primary drain connection so that water will drain smoothly from the pan. All horizontal drain pipes must be pitched downward away from the unit a minimum of 1/8” per foot of line to ensure proper drainage.

• Do not reduce drain pipe size less than connection size provided on condensate drain pan.

• Do not connect condensate drain pipe to a closed or open sewer pipe.

• The drain pipe should be insulated where necessary to prevent sweating and damage due to condensate forming on the outside surface of the line.

• Make provisions for disconnecting and cleaning of the primary drain pipe if it become necessary. Install a 3 inch trap in the primary drain pipe as close as possible to the unit. Make sure that the top of the trap is below connection to the drain pan to allow complete drainage of pan.

• Auxiliary drain pipe should be connected to a place where it will be noticeable. Homeowner should be warned that a problem exists if water begins running from the auxiliary drain pipe.

• Test condensate drain pan and drain pipe after installation is complete. Pour enough water into drain pan, make sure that the drain pan is draining completely, no leaks are found in drain pipe fittings, and no water is draining from the termination of the primary drain pipe.

Horizontal left-flow

• Horizontal left-flow is another default factory configuration for the units. These units may be converted to horizontal left-flow by removing indoor coil assembly with drain pan and reinstalling it as shown below.
• Rotate the unit 90° into the horizontal left position, with the coil compartment on the right and the blower compartment on the left.
• Reinstall the indoor coil 180° from original position. Ensure the retaining channel is fully engaged with the coil rail(Figure 3-4 and 3-5).
• Aftermarket drain pan kits are required when the unit is configured for the horizontal position over a finished ceiling and living space.

CAUTION
Horizontal units must be configured for right hand air supply or left hand air supply.
Horizontal drain pan must be located under indoor coil. Failure to use the drain pan can result in property damage.
3.4 Installation in an unconditioned space
There are two pairs of coil rails in the air handler for default and counter flow application. If the air handler is installed in an unconditioned space, the two unused coil rails should be removed to minimize air handler surface sweating. The coil rails can be easily removed by taking off the 6 mounting screws from both sides of the cabinet.

Electrical Wiring

Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any applicable local ordinance.
WARNING
Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.
4.1 Power Wiring
It is important that proper electrical power is available for connection to the unit model being installed.
Refer to the unit nameplate, wiring diagram and electrical data in the installation instructions.

• If required, install a branch circuit disconnect of adequate size, located within sight of, and readily accessible to the unit.
• When the electric heat is installed, units may be equipped with one or two 30~60 amp circuit breakers. These breakers protect the internal wiring in the event of a short circuit and serve as a disconnect. Circuit breakers installed within the unit do not provide over-current protection of the supply wiring and therefore may be sized larger than the branch circuit protection.
• Supply circuit power wiring must be 167 ℉ minimum copper conductors only. Refer to electrical data in this section for ampacity, wire size and circuit protector requirements. Supply circuit protective devices may be either fuses or “HACR” type circuit breakers.
  

4.2 Control Wiring
Class 2 low voltage control wiring should not be run in conduit with main power wiring and must be separated from power wiring, unless class 1 wire of proper voltage rating is used.

• Low voltage control wiring should be color-coded 18 AWG. For lengths longer than 100 ft, 16 AWG wire shall be used.
• Refer to wiring diagrams attached to indoor and outdoor sections to be connected.
• Make sure separation of control wiring and power wiring has been maintained.
  

Table 2. Thermostat terminal definition chart.

NOTES:

1. Be sure power supply agrees with equipment nameplate.
2. Power wiring and grounding of equipment must comply with local codes.
3. Low voltage wiring to be No. 18 AWG minimum conductor.
4. Some thermostats may use W2/AUX for heat pump.
5. The electrical heater may be not avaliable for some model (need to be checked later).
6. For single stage thermostat with Y/Y1 terminal only, place both Y1 and Y2 wire together to Y/Y1 terminal.

4.3 Grounding
WARNING
The unit must be grounded.
Failure to do so can result in electrical shock causing personal injury or death.

• Grounding may be accomplished by grounding metal conduit when installed in accordance with electrical codes to the unit cabinet. Grounding may also be accomplished by attaching ground wire(s) to ground lug(s) provided in the unit wiring compartment.
• Use of multiple supply circuits require grounding of each circuit to lug(s) provided in the unit.

4.4 Electrical Data
Table 3. Electrical data

Model| Voltage-
Phase-Hz| Power Supply
Wiring Gauge| Motor HP| Motor
Steps| Minimum
Circuit
AMPS| MAX overcurrent
protective(A)
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E4AH5E24A1J30A| 208/230- 1Ph-60Hz| 14| 1/3| 5| 4.| 15
E4AH5E36A1J30A| 1/2| 5.0
E4AH5E48A1K30A| 3/4| 7.0
E4AH5E60A1K30A| 3/4| 7.0

4.5 Electric Heat Data
Table 4. Electric heat data

Kit Model| Model| Electric Heat (kW)| MK Circuit Ampacity| MAX. Fuse or Breaker (HACR) Ampacity| Fan speed
---|---|---|---|---|---
208| 230| 208| 230| 1| 2| 3| 4| 5
BAYHTR16
05BRKA| E4AH5E
24A1J30A| 5| 23| 25| 25| 30| x| x| •| •| •
BAYHTR16
10BRKA| 10| 45| 50| 50| 60| x| x| •| •| •
BAYHTR16
05BRKA| E4AH5E
36A1J30A| 5| 23| 25| 25| 30| x| x| •| •| •
BAYHTR16
10BRKA| 10| 45| 50| 50| 60| x| x| •| •| •
BAYHTR16
15BRKA| 5+10| 23+45| 25+50| 50+25| 60+30| x| x| •| •| •
BAYHTR16
05BRKA| E4AH5E
48A1K30A| 5| 23| 25| 25| 30| x| x| •| •| •
BAYHTR16
10BRKA| 10| 45| 50| 50| 60| x| x| •| •| •
BAYHTR16
15BRKA| 5+10| 23+45| 50+25| 50+25| 60+30| x| x| •| •| •
BAYHTR16
20BRKA| 10+10| 45+45| 50+50| 50+50| 60+60| x| x| x| •| •
BAYHTR16
05BRKA| E4AH5E
60A1K30A| 5| 23| 25| 25| 30| x| x| •| •| •
BAYHTR16
10BRKA| 10| 45| 50| 50| 60| x| x| •| •| •
BAYHTR16
15BRKA| 5+10| 23+45| 50+25| 50+25| 60+30| x| x| •| •| •
BAYHTR16
20BRICA| 10+10| 45+45| 50+50| 50+50| 60+60| x| x| x| •| •

*MCA and Max Fuse Ampacity contains the motor amps.
• Electric heat kits are suitable for air handler multiple position installation. “•” means available, “x” means unavailable.
Safety Cautions All electric work must be performed by qualified personnel.
BAYHTR16** series is designed and approved to be installed in the AMERISTAR or RUNTRU series air handlers.

• Check the BAYHTR16 series label to confirm BAYHTR16 series size based on room load under lowest ambient temperature.
• Inspect all heating elements and whether heater element wires.Contact local distributor immediately if there is any occurred damage.

Warning

• Disconnect all external power supplies before performing installation and servicing. Turn off accessory heater power switch if applicable. Failure to do so may cause serious injury.
• BAYHTR16** series must be properly grounded and use copper supply wires.
• Make sure to follow national electric code and local regulations.
• When installing it in an enclosed area such as a garage, heater elements should have a minimum clearance of 18’’ from the floor to insure the proper ventilation.

4.6 INSTALLATION INSTRUCTIONS
“BAYHTR16” Electric Heater Kits For use in Air Handlers
ATTENTION INSTALLING PERSONNEL
Prior to installation, thoroughly familiarize yourself with this installation manual. Observe all safety warnings. During installation or repair, caution is to be observed. It is your responsibility to install the product safely and to educate the customer on its safe use.
STEP 1. Unfasten 4 screws to take away the blower access panel of the air handler. STEP 2. Remove the cover plate from the air handler. STEP 3. Slide the heater kit into the slot and secure element plate with previously removed screws.When sliding the heater kit into the slot ensure that it is installed in the correct orientation described below. Thermostat will be on the left hand side and the fuse will be on the right hand side.
When two elements are being used ensure that “UPPER” and “LOWER” elements are installed in the correct slots and orientations. STEP 4. Align the attachment clip and the hole and fasten the loose wires by using wire tie. STEP 5.** Install the circuit breaker into the mounting rail, break out appropriate area of the plastic circuit breaker cover on the access panel of the air handler.

Warning
FIRE, ELECTRICAL SHOCK, HAZARD
After connect all wires, check all screws of breaker and make sure all screws are properly tight. Failure to do so will result in breaker malfunction, fire, death, personal injury and properly damage.
NOTE:

• When indoor control board receives W1/W2 signal, electric heater will be energized and indoor blower will be turned on.
• When W1/W2 signal is off, indoor blower will be turned off.
• Blower motor runs when “G” is energized, and off when “G” is de-energized.

Airflow Performance

Airflow performance data is based on cooling performance with a coil and no filter in place. Check the performance table for appropriate unit size selection. External static pressure should stay within the minimum and maximum limits shown in the table below in order to ensure proper airflow.
Table 5. Airflow performance data

External Static Pressure-Inches W.C.)
0| 0.1| 0.16| 0.2| 0.3| 0.4| 0.5| 0.6| 0.7| 0.8
E4AH5E
24A1J30A| Tap (5)| SCFM| 1013| 968| 947| 948| 948| 936| 899| 857| 808| 755
Watts| 181| 192| 196| 198| 200| 207| 217| 226| 236| 245
Tap
(4)factory| SCFM| 862| 810| 810| 804| 790| 746| 702| 655| 607| 562
Watts| 114| 118| 122| 124| 131| 139| 148| 159| 169| 177
Tap (3)| SCFM| 767| 735| 728| 729| 680| 630| 576| 535| 490| 454
Watts| 80| 85| 88| 91| 99| 108| 118| 127| 135| 141
Tap
(2)factory| SCFM| 668| 642| 636| 614| 590| 510| 471| 418| 380| 334
Watts| 59| 63| 66| 68| 72| 85| 95| 101| 107| 116
Tap (1)| SCFM| 598| 569| 553| 528| 475| 428| 373| 325| 277| 260
Watts| 45| 46| 53| 55| 64| 72| 79| 85| 92| 97
E4AH5E
36A1J30A| Tap (5)| SCFM| 1458| 1412| 1390| 1366| 1320| 1274| 1194| 1167| 1072| 1027
Watts| 280| 295| 298| 300| 308| 317| 327| 337| 350| 357
Tap
(4)factory| SCFM| 1287| 1240| 1210| 1192| 1149| 1077| 1006| 939| 888| 832
Watts| 203| 212| 216| 221| 228| 232| 246| 258| 266| 272
Tap (3)| SCFM| 1133| 1084| 1057| 1035| 979| 896| 835| 777| 724| 670
Watts| 147| 154| 157| 162| 169| 180| 190| 197| 204| 211
Tap
(2)factory| SCFM| 929| 872| 839| 796| 716| 653| 598| 527| 460| 380
Watts| 81| 92| 95| 100| 114| 120| 127| 136| 143| 153
Tap (1)| SCFM| 802| 756| 692| 651| 594| 525| 453| 355| 270| 210
Watts| 60| 69| 72| 78| 87| 91| 98| 108| 114| 119
E4AH5E
48A1K30A| Tap (5)| SCFM| 1950| 1903| 1877| 1863| 1819| 1784| 1744| 1708| 1666| 1616
Watts| 562| 570| 575| 578| 585| 591| 597| 604| 611| 619
Tap (4)| SCFM| 1718| 1682| 1659| 1648| 1612| 1575| 1533| 1498| 1453| 1401
Watts| 412| 422| 361| 433| 444| 453| 460| 466| 473| 482
Tap
(3)factory| SCFM| 1505| 1465| 1443| 1428| 1391| 1353| 1325| 1293| 1254| 1174
Watts| 277| 290| 298| 302| 313| 325| 338| 348| 358| 374
Tap (2)| SCFM| 1211| 1175| 1174| 1174| 1100| 1066| 1031| 957| 917| 879
Watts| 155| 167| 176| 179| 191| 206| 217| 232| 247| 260
Tap
(1)factory| SCFM| 931| 927| 894| 905| 857| 796| 785| 744| 717| 676
Watts| 83| 100| 110| 116| 129| 144| 158| 176| 188| 206
E4AH5E
60A1K30A| Tap (5)| SCFM| 1950| 1903| 1877| 1863| 1819| 1784| 1744| 1708| 1666| 1616
Watts| 562| 570| 575| 578| 585| 591| 597| 604| 611| 619
Tap (4)| SCFM| 1718| 1682| 1659| 1648| 1612| 1575| 1533| 1498| 1453| 1401
Watts| 412| 422| 361| 433| 444| 453| 460| 466| 473| 482
Tap
(3)factory| SCFM| 1505| 1465| 1443| 1428| 1391| 1353| 1325| 1293| 1254| 1174
Watts| 277| 290| 298| 302| 313| 325| 338| 348| 358| 374
Tap (2)| SCFM| 1211| 1175| 1174| 1174| 1100| 1066| 1031| 957| 917| 879
Watts| 155| 167| 176| 179| 191| 206| 217| 232| 247| 260
Tap
(1)factory| SCFM| 931| 927| 894| 905| 857| 796| 785| 744| 717| 676
Watts| 83| 100| 110| 116| 129| 144| 158| 176| 188| 206

Shaded boxes represent airflow outside the required 300-450cfm/ton at full load.
NOTES: Airflow based upon cooling performance at 230V with no electric heat and no filter. Airflow at 208V is approximately the same as 230V because the multi-tap ECM motor is a constant torque motor.
The torque doesn’t drop off at the speeds in which the motor operates.
The air distribution system has the greatest effect on airflow. For this reason, the contractor should use only industry-recognized procedures to finish ductwork.
Heat pump systems require a specified airflow. Each ton of cooling requires between 300 and 450 cubic feet per minute (CFM). Duct design and construction should be carefully done. System performance can be lowered dramatically through bad planning or workmanship. Air supply diffusers must be selected and located carefully. They must be sized and positioned to deliver treated air along the perimeter of the space. Return air grilles must be properly sized to carry air back to the blower as well. Failure to follow these may cause abnormal noise and drafts.
The installers should balance the air distribution system to ensure proper quiet airflow to all rooms in the home. This ensures a comfortable living space. An air velocity meter or airflow hood can give a reading of system CFM.

Ductwork

Field ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B and any applicable local ordinance.
WARNING
Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc. Unauthorized use of such devices may result in fire, carbon monoxide poisoning, explosion, personal injury or property damage. Sheet metal ductwork run in unconditioned spaces must be insulated and covered with a vapor barrier. Fibrous ductwork may be used if constructed and installed in accordance with SMACNA Construction Standard on Fibrous Glass Ducts. Ductwork must comply with National Fire Protection Association as tested by U/L Standard 181 for Class I Air Ducts. Check local codes for requirements on ductwork and insulation.

• Duct system must be designed within the range of external static pressure the unit is designed to operate against. It is important that the system airflow be adequate. Make sure supply and return ductwork, grilles, special filters, accessories, etc. are accounted for in total flow resistance. Refer to the airflow performance table in this manual.
• Design the duct system in accordance with “ACCA” Manual “D” Design for Residential Winter and Summer Air Conditioning and Equipment Selection. Latest editions are available from: “ACCA” Air Conditioning Contractors of America, 1513 16th Street, N.W., Washington, D.C. 20036. If duct system incorporates flexible air duct, be sure that the pressure drop Information (straight length plus all turns) shown in “ACCA” Manual “D” is accounted for in system.
• Supply plenum is attached to the 3/4” duct flanges supplied with the unit. Attach flanges around the blower outlet.
• Secure the supply and return ductwork to the unit flanges, using proper fasteners for the type of duct used and tape the duct-to-unit joint as required to prevent air leaks.

IMPORTANT
If an elbow is included in the plenum close to the unit, it must not be smaller than the dimensions of the supply duct flange on the unit.
The front flange on the return duct connected to the blower casing must not be screwed into the area where the power wiring is located. Drills or sharp screw points can damage insulation on wires located inside unit.

Air Filter

Filter application and replacement are critical to airflow, which may affect the heating and cooling system performance. Reduced airflow can shorten the life of the system’s major components, such as motor, heat relays, evaporator coil or compressor. Units should be sized for a maximum of 300 feet/min.
air velocity or what is recommended for the filter type installed.
Ensure the air flow is in the range of 300~450CFM if adding high efficiency filters or electronic air filtration systems. Note that the overall performance and efficiency of the unit will be reduced because of pressure drop by filters.
IMPORTANT
Do not double filter the return air duct.
Do not filter the supply air duct which will change the performance of the unit and reduce airflow.
WARNING
Do not operate the system without filters. A portion of the dust suspended in the air may temporarily lodge in the duct. Any circulated dust particles could be heated and charred by contact with the air handler elements. This residue could soil ceilings, walls, drapes, carpets and other articles in the house.
Soot damage may occur without filters in place when certain types of candles, oil lamps or standing pilots are burned.
Air filter Clean/Replacement

1. Remove bolts to take the filter cover away.
2. Hold the edge of the air filter and extract it out.
3. Clean the air filter or use a new one to replace.
   

Table 6. Filter Dimensions

E4AH5E24A1J30A
E4AH5E36A1J30A| 18 x 20| 19-3/4| 21| 1| 16| 13-7/8
E4AH5E48A1 K30A
E4AH5E60A1K30A| 22 x 20| 23-1/4| 21| 1| 16| 15-1/4

NOTE:

• Refer to the label on filter cover to install the correct filter size.
• Units built on and prior to Dec 31, 2019.

Indoor Unit Function

8.1 Indoor Fan Speed Adjustment
This function is for the user in the installation, according to the length of the air duct to determine the best fan speed, so that indoor air supply to achieve the best performance. If the user wants to adjust the fan speed level, the operation is as follows:
The dip-switch for adjusting the fan speed level is located at SW1 of the indoor unit Main PCB, as shown in Figure 9-1. Dip-switch have digital end and “ON” end, The setting of dip-switch is explained as follows: STEP 1.
When the SW1-1 is located at the digital end (factory default), the fan runs in 5th level for high speed and 2nd level for low speed. If you want to adjust the fan speed by yourself, you need to change it to the “ON” end:
STEP 2.
Set SW1-1 to “ON” end.Then combining the SW1-2 and SW1-3 to get different fan speeds. The fan speed operation obtained by the combination is shown in the following table:
Table 7. Dip-switch setting for fan speed

8.2 Cold Air Prevention
This function should be confirmed to the user during the installation, the factory default is turning on anti-cold air function, the effect is: 1. the initial stage of heating with low fan speed, 2. the indoor unit is shut down when the unit enter defrosting mode;
You can turn on or turn off this function by adjusting the fourth position of SW1 on the indoor unit main control board. The digit end corresponds to OFF, and the letter end corresponds to ON. The default setting is ON, adjust the dip-switch to OFF, the anti-cold air function will be turned off.

Service Manual

For more information, please scan the QR code for the service manual.

https://qrco.de/bdkuz7

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

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www.ahridirectory.org| www.ahridirectory.org

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-E4AH5001-1B-EN 08 Jun 2023
Supersedes 88-E4AH5001-1A-EN (04 Apr 2023)
© 2023

References

• American Standard® | Air Conditioning and Heating | HVAC Systems
• p65Warnings.ca.gov
• Trane Heating & Air Conditioning

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