MAINLINE MLA15AZ24AJ3NA Elite iM Air Conditioners User Manual

: June 13, 2024
: Mainline

Table of Contents

MAINLINE MLA15AZ24AJ3NA Elite iM Air Conditioners
Product Information
Product Usage Instructions
Features and Benefits
Air Conditioners
Designates Metric Conversions
General Data
Accessories
Unit Dimensions
CLEARANCES **
Control Wiring
Refrigerant Line Size Information
LIMITED WARRANTY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MAINLINE MLA15AZ24AJ3NA Elite iM Air Conditioners

MAINLINE-MLA15AZ24AJ3NA-Elite-iM-Air-Conditioners-
PRODUCT

Product Information

The MLA15AZ Air Conditioner is manufactured by HVACmainline.com. It is available in four different models: MLA15AZ24AJ3NA, MLA15AZ36AJ3NA, MLA15AZ48AJ3NA, and MLA15AZ60AJ3NA. The air conditioner has cooling efficiencies up to 15.2 SEER2/9.8 EER2 and nominal sizes ranging from 2 to 5 tons [7.0 to 17.6 kW]. The cooling capacities range from 22.8 to 56.0 kBTU [6.68 to 16.4 kW].

Product Usage Instructions

Install the air conditioner with a 24V two-stage thermostat for 3-speed operation.
Ensure precise temperature control, advanced humidity control, and greater efficiency by using the recommended thermostat.
Identify the model number of your air conditioner using the provided chart. The model number contains information about the brand, product category, SEER2 rating, region, refrigerant, capacity in BTU/HR, major series, voltage, type, controls, and minor series.
Refer to the general data section for specific information about each model’s nominal tonnage, valve connections, number of blades, motor hp, CFM, RPM, and watts.
Check the electrical data section for rated load amps and locked rotor amps for each model at 208/230-1-60 voltage.
Optional accessories are available for the MLA15AZ Air Conditioner. Refer to the accessories section for model numbers of accessories such as compressor crankcase heater, low ambient control, compressor sound cover, low-pressure control, high-pressure control, liquid line solenoid, and solenoid coil.
The weighted sound power level in dBA is provided for each unit size and voltage series. The typical octave band spectrum is also provided for various frequencies.
Note that the sound power level with a sound blanket is not listed in AHRI (Air-Conditioning, Heating, and Refrigeration Institute) standards.

Features and Benefits

Enabled: Automatic system configuration and optimization
Diagnostics & Bluetooth®1 Connectivity: With the BluArch™ Contractor App, built-in technology makes advanced set-up, monitoring, troubleshooting, and repairing the product easier than ever before
Variable Speed Twin Rotary Compressor & Inverter Drive:
- Features Inverter operation from 40 to 70% capacity or 100% capacity via line voltage with the Smart Thermostat
- 3-speed operation when installed with a 24V two-stage thermostat
- Provides precise temperature control, advanced humidity control, and greater efficiency
Swept Wing Fan Technology: Features quieter operation and improved unit acoustics
7mm Condenser Copper Coil: Requires less refrigerant allowing for a smaller and lighter footprint while enhancing reliability
Expanded Valve Space: 3 in. – 4 in. – 5 in. service valve space—provides a minimum working area of 27 square inches for easier access.

Air Conditioners

$MAINLINE-MLA15AZ24AJ3NA-Elite-iM-Air-Conditioners-FIG-1 $1$$

Designates Metric Conversions

Available Models	Description
MLA15AZ24AJ3NA	2 ton 3+ Speed iM Air Conditioner – 208/230/1/60
MLA15AZ36AJ3NA	3 ton 3+ Speed iM Air Conditioner – 208/230/1/60
MLA15AZ48AJ3NA	4 ton 3+ Speed iM Air Conditioner – 208/230/1/60
MLA15AZ60AJ3NA	5 ton 3+ Speed iM Air Conditioner – 208/230/1/60

Standard Equipment

R-410A Refrigerant
Variable Speed Twin Rotary Compressor
Field Installed Filter Drier
Front Seating Service Valves
Internal Pressure Relief Valve
Internal Thermal Overload
Long Line capability
Low Ambient capability with Kit
3-4-5 Expanded Valve Space
Composite Basepan
2 Screw Control Box Access
15″ Access to Internal Components
Quick release louver panel design
No fasteners to remove along bottom
Optimized Venturi Airflow
Single row condenser coil
Powder coated paint
Rust resistant screws
QR code
External gauge ports
Service trays

General Data

Model No.| MLA15AZ24AJ3| MLA15AZ36AJ3| MLA15AZ48AJ3| MLA15AZ60AJ3
Nominal Tonnage| 2.0| 3.0| 4.0| 5.0
Valve Connections|
Liquid Line O.D. – in.| 3/8| 3/8| 3/8| 3/8
Suction Line O.D. – in.| 3/4| 3/4| 7/8| 7/8
Refrigerant (R410A) furnished oz.¹| 91| 119| 130| 154
Compressor Type| Twin Rotary
Outdoor Coil|
Net face area – Outer Coil| 11.79| 14.4| 16.42| 17.88
Net face area – Inner Coil| —| —| —| —
Tube diameter – in.| 0.276| 0.276| 0.276| 0.276
Number of rows| 1| 1| 1| 1
Fins per inch| 24| 24| 24| 24
Outdoor Fan|
Diameter – in.| 20| 24| 24| 26
Number of blades| 3| 3| 3| 3
Motor hp| 1/5| 1/5| 1/3| 1/2
CFM| 2908| 4138| 4529| 5274
RPM| 1075| 1000| 1075| 1075
watts| 170| 267| 294| 370
Shipping weight – lbs.| 174| 198| 230| 251
Operating weight – lbs.| 167| 191| 223| 244
Electrical Data
Line Voltage Data (Volts-Phase-Hz)| 208/230-1-60| 208/230-1-60| 208/230-1-60| 208/230-1-60
Maximum overcurrent protection (amps)²| 20| 30| 40| 50
Minimum circuit ampacity³| 12| 20| 25| 32
Compressor|
Rated load amps| 10| 15| 20| 25
Locked rotor amps| 65| 70| 96| 119

Refrigerant charge sufficient for 15 ft. length of refrigerant lines. For longer line set requirements see the installation instructions for information about set length and additional refrigerant charge required.
HACR type circuit breaker of fuse.
Refer to National Electrical Code manual to determine wire, fuse and disconnect size requirements.

Accessories

Model No.| MLA15AZ24AJ3| MLA15AZ36AJ3| MLA15AZ48AJ3| MLA15AZ60AJ3
---|---|---|---|---
Compressor crankcase heater*| N/A| N/A| N/A| N/A
Low ambient control| 47-102709-10| 47-102709-10| 47-102709-10| 47-102709-10
Compressor sound cover| 68-23427-27| 68-23427-28| 68-23427-29| 68-23427-29
Low pressure control| 47-103454-01| 47-103454-01| 47-103454-01| 47-103454-01
High pressure control| 47-103669-02| 47-103669-02| 47-103669-02| 47-103669-02
Liquid Line Solenoid (24 VAC, 50/60 Hz)| Solenoid Valve| 200RD2T3TVLC| 200RD2T3TVLC| 200RD2T3TVLC| 200RD2T3TVLC
Solenoid Coil| 61-AMG24V| 61-AMG24V| 61-AMG24V| 61-AMG24V
Liquid Line Solenoid (120/240 VAC, 50/60 Hz)| Solenoid Valve| 200RD2T3TVLC| 200RD2T3TVLC| 200RD2T3TVLC| 200RD2T3TVLC
Solenoid Coil| 61-AMG120/240V| 61-AMG120/240V| 61-AMG120/240V| 61-AMG120/240V

Crankcase Heater recommended with Low Ambient Kit.

Weighted Sound Power Level (dBA)

Unit Size – Voltage, Series| Standard Rating (dBA) Low Speed/ High Speed| TYPICAL OCTAVE BAND SPECTRUM (dBA without tone adjustment)| Sound Power Level [dB(A)] with Sound Blanket
---|---|---|---
125| 250| 500| 1000| 2000| 4000| 8000
MLA15AZ24AJ3| 63.3| 35.9| 47.9| 55.3| 53.2| 50.4| 47.1| 43.8| ****

Sound Blankets – Standard

71.7| 46.1| 59.1| 63.2| 60.8| 58.7| 56.5| 47.9
MLA15AZ36AJ3| 61.4| 38.5| 48.0| 53.8| 49.2| 45.9| 47.0| 47.4
72.9| 47.5| 59.5| 64.9| 60.7| 62.6| 57.0| 49.6
MLA15AZ48AJ3| 63.8| 42.3| 45.9| 53.5| 48.9| 45.8| 59.1| 36.4
76.2| 49.4| 61.4| 68.1| 53.9| 60.8| 57.4| 48.5
MLA15AZ60AJ3| 65.7| 39.7| 49.0| 58.2| 54.5| 52.2| 53.8| 41.3
76.7| 49.3| 64.6| 68.1| 65.1| 62.6| 58.6| 53.0

NOTE: Tested in accordance with AHRI Standard 270-08 (not listed in AHRI)

Unit Dimensions

Model No.

| Operating| Shipping
---|---|---
H (Height)| L (Length)| W (Width)| H (Height)| L (Length)| W (Width)
Inches| mm| Inches| mm| Inches| mm| Inches| mm| Inches| mm| Inches| mm
MLA15AZ24AJ3| 27.00| 686| 29.75| 756| 29.75| 756| 28.50| 724| 32.38| 822| 32.38| 822
MLA15AZ36AJ3| 27.00| 686| 33.75| 857| 33.75| 857| 28.50| 724| 36.38| 924| 36.38| 924
MLA15AZ48AJ3| 31.00| 787| 33.75| 857| 33.75| 857| 32.50| 826| 36.38| 924| 36.38| 924
MLA15AZ60AJ3| 31.00| 787| 35.75| 908| 35.75| 908| 32.50| 826| 38.38| 975| 38.38| 975

$MAINLINE-MLA15AZ24AJ3NA-Elite-iM-Air-Conditioners-FIG-1 $2$$

CLEARANCES **

$MAINLINE-MLA15AZ24AJ3NA-Elite-iM-Air-Conditioners-FIG-1 $3$$ **

Control Wiring

$MAINLINE-MLA15AZ24AJ3NA-Elite-iM-Air-Conditioners-FIG-1 $4$$

Application Guidelines

Intended for outdoor installation with free air inlet and outlet. Outdoor fan external static pressure available is less than 0.01 -in. wc.
The minimum outdoor operation air temperature for a cooling mode without a low-ambient operation accessory is 55°F (12.8°C).
Maximum outdoor operating air temperature is 125°F (51.7°C).
For reliable operation, the unit should be level in all horizontal planes.
Use only copper wire for electric connections at unit. Aluminum and clad aluminum are not acceptable for the type of connector provided.
Do not apply capillary tube indoor coils to these units.
Factory-supplied filter drier must be installed.

Refrigerant Line Size Information

15/16 SEER2 Variable Speed Air Conditioners

Unit Size| Allowable Liquid Line Size| Allowable Vapor Line Size| Outdoor Unit ABOVE or BELOW Indoor Unit Equivalent Length (Feet)
< 25| 26- 50| 51- 75| 76- 100| 101- 125| 126- 150
Maximum Vertical Separation/Capacity Multiplier
2.0 Ton*

SEE NOTE 3

| 1/4″| 5/8″| 25 / 1.00| 50 / 0.99| 32 / 0.98| 40 / 0.97| NR| NR
5/16″| 5/8″| 25 / 1.00| 50 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96| 50 / 0.95
3/8″| 5/8″| 25 / 1.00| 50 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96| 50 / 0.95
1/4″| 3/4″| 25 / 1.00| 50 / 1.00| 32 / 0.99| 40 / 0.99| NR| NR
5/16″| 3/4″| 25 / 1.00| 50 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.99| 50 / 0.98
3/8″| 3/4″| 25 / 1.00| 50 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.99| 50 / 0.98
3 Ton| 5/16″| 5/8″| 25 / 0.99| 50 / 0.97| 50 / 0.95| 50 / 0.93| 37 / 0.91| NR
3/8″| 5/8″| 25 / 0.99| 50 / 0.97| 50 / 0.95| 50 / 0.93| 50 / 0.91| NR
5/16″| 3/4″| 25 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.98| 37 / 0.97| 22 / 0.96
3/8″| 3/4″| 25 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96
1/2″| 3/4″| 25 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96
4 Ton| 3/8″| 3/4″| 25 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96| 50 / 0.94| 50 / 0.93
1/2″| 3/4″| 25 / 0.99| 50 / 0.98| 50 / 0.97| 50 / 0.96| 50 / 0.94| 50 / 0.93
3/8″| 7/8″| 25 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.98| 50 / 0.98| 50 / 0.97
1/2″| 7/8″| 25 / 1.00| 50 / 0.99| 50 / 0.99| 50 / 0.98| 50 / 0.98| 50 / 0.97
5 Ton| 3/8″| 3/4″| 25 / 0.99| 50 / 0.97| 50 / 0.95| 50 / 0.93| 50 / 0.91| NR
1/2″| 3/4″| 25 / 0.99| 50 / 0.97| 50 / 0.95| 50 / 0.93| 50 / 0.91| NR**
3/8″| 7/8″| 25 / 1.00| 50 / 0.99| 50 / 0.98| 50 / 0.98| 50 / 0.97| 38 / 0.96
1/2″| 7/8″| 25 / 1.00| 50 / 0.99| 50 / 0.98| 50 / 0.98| 50 / 0.97| 50 / 0.96

NOTES:

Do not exceed 150 ft. linear line length.
Do not exceed 50 ft. vertical separation if the outdoor unit is above the indoor unit.
3/4″ suction line should only be used for 2-ton systems if the outdoor unit is below or at the same level as the indoor to ensure proper oil return.
Always use the smallest liquid line allowable to minimize refrigerant charge.
Applications shaded in light gray indicate capacity multipliers between 0.90 and 0.96 which are not recommended but are allowed.
Applications shaded in dark gray are not recommended due to excessive liquid or suction pressure drop.

15/16 SEER2 Variable Speed Air Conditioners

Unit Size| Allowable Liquid Line Size mm [in.]| Allowable Vapor Line Size mm [in.]| Outdoor Unit ABOVE or BELOW Indoor Unit Equivalent Length (Meters)
< 25| 26- 50| 51- 75| 76- 100| 101- 125| 126- 150
Maximum Vertical Separation/Capacity Multiplier
2.0 Ton*
SEE NOTE 3| 6.35 [1/4]| 15.88 [5/8]| 8 / 1.00| 15 / 0.99| 10 / 0.98| 10 / 0.97| NR| NR
7.94 [5/16]| 15.88 [5/8]| 8 / 1.00| 15 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96| 15 / 0.95
9.53 [3/8]| 15.88 [5/8]| 8 / 1.00| 15 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96| 15 / 0.95
6.35 [1/4]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 10 / 0.99| 12 / 0.99| NR| NR
7.94 [5/16]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.99| 15 / 0.99| 15 / 0.98
9.53 [3/8]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.99| 15 / 0.99| 15 / 0.98
3 Ton| 7.94 [5/16]| 15.88 [5/8]| 8 / 0.99| 15 / 0.97| 15 / 0.95| 15 / 0.93| 11 / 0.91| NR
9.53 [3/8]| 15.88 [5/8]| 8 / 0.99| 15 / 0.97| 15 / 0.95| 15 / 0.93| 15 / 0.91| NR
7.94 [5/16]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.98| 11 / 0.97| 7 / 0.96
9.53 [3/8]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96
12.70 [1/2]| 19.05 [3/4]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96
4 Ton| 9.53 [3/8]| 19.05 [3/4]| 8 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96| 15 / 0.94| 15 / 0.93
12.70 [1/2]| 19.05 [3/4]| 8 / 0.99| 15 / 0.98| 15 / 0.97| 15 / 0.96| 15 / 0.94| 15 / 0.93
9.53 [3/8]| 22.23 [7/8]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.98| 15 / 0.98| 15 / 0.97
12.70 [1/2]| 22.23 [7/8]| 8 / 1.00| 15 / 0.99| 15 / 0.99| 15 / 0.98| 15 / 0.98| 15 / 0.97
5 Ton| 9.53 [3/8]| 19.05 [3/4]| 8 / 0.99| 15 / 0.97| 15 / 0.95| 15 / 0.93| 15 / 0.91| NR
12.70 [1/2]| 19.05 [3/4]| 8 / 0.99| 15 / 0.97| 15 / 0.95| 15 / 0.93| 15 / 0.91| NR**
9.53 [3/8]| 22.23 [7/8]| 8 / 1.00| 15 / 0.99| 15 / 0.98| 15 / 0.98| 15 / 0.97| 12 / 0.96
12.70 [1/2]| 22.23 [7/8]| 8 / 1.00| 15 / 0.99| 15 / 0.98| 15 / 0.98| 15 / 0.97| 15 / 0.97

NOTES:

Do not exceed 46 meters of linear line length.
Do not exceed 15 meters of vertical separation between indoor and outdoor units.
19.05mm [3/4″] vapor line should only be used for 2-ton systems if the outdoor unit is below or at the same level as the indoor unit to ensure proper oil return.
Always use the smallest liquid line allowable to minimize refrigerant charge.
Applications shaded in light gray indicate capacity multipliers between 0.90 and 0.96 which are not recommended but are allowed.
Applications shaded in dark gray are not recommended due to excessive liquid or suction pressure drop.

Additional Oil, Oz.

Lineset Length| 50| 60| 70| 80| 90| 100| 110| 120| 130| 140| 150
2T| N/A| N/A| N/A| N/A| N/A| 1| 2| 3| 5| 6| 7
3T| N/A| N/A| N/A| N/A| N/A| N/A| 1| 2| 3| 5| 6
4T| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A
5T| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A| N/A

Performance Data @ AHRI Standard Conditions – Cooling

Designated Tested Combination (DTC)

Outdoor Unit| Air Handler| Total Capacity BTU/H [kW]| Net Sensible BTU/H [kW]| Net Latent BTU/H [kW]| SEER2| EER2| Indoor CFM [L/s]
MLA15AZ24AJ3| ML3VZ2417STACN| 22,800 [6.7]| 17,600 [5.2]| 5,200 [1.5]| 15.2| 9.8| 750 [354.0]
MLA15AZ36AJ3| ML3VZ3617STACN| 34,200 [10.0]| 26,600 [7.8]| 7,600 [2.2]| 15.2| 9.8| 1,125 [530.9]
MLA15AZ48AJ3| ML3VZ4821STACN| 45,500 [13.3]| 35,500 [10.4]| 10,000 [2.9]| 15.2| 9.8| 1,425 [672.5]
MLA15AZ60AJ3| ML3VZ6024STACN| 55,500 [16.3]| 43,000 [12.6]| 12,500 [3.7]| 15.2| 9.8| 1,675 [790.5]

NOTE: This data includes DTC (Designated Test Combination) ratings and is for reference purposes only. A full listing of official ratings and system match-ups, along with downloadable certificates, can be accessed from the AHRI website: www.ahridirectory.org.

LIMITED WARRANTY

GENERAL TERMS OF LIMITED WARRANTY
Mainline® will furnish a replacement for any part of this product that fails in normal use and service within the applicable period stated, in accordance with the terms of the limited warranty. *For complete details of the Limited and Conditional Warranties, including applicable terms and conditions, contact your local contractor or the Manufacturer for a copy of the product warranty certificate.

Conditional Parts

(Registration Required)……………………………… Ten (10) Years

Before proceeding with installation, refer to installation instructions packaged with each model, as well as complying with all Federal, State, Provincial, and Local codes, regulations, and practices. “In keeping with its policy of continuous progress and product improvement, Mainline reserves the right to make changes without notice.” www.MainlineCollection.com. PRINTED IN U.S.A. 4/23 QG FORM NO. AML-336 REV. 3

MLA15AZ

Cooling Efficiencies up to: 15.2 SEER2/9.8 EER2
Nominal Sizes: 2 to 5 Ton [7.0 to 17.6 kW]
Cooling Capacities: 22.8 to 56.0 kBTU [6.68 to 16.4 kW]

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks is under license. Other trademarks and trade names are those of their respective owners. The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks is under license. Other trademarks and trade names are those of their respective owners.