Rheem RA18AZ Air Conditioners User Manual

Rheem RA18AZ Air Conditioners

Product Information

Air Conditioners RA18AZ

The Air Conditioners RA18AZ is a split-system air conditioner and heat pump that is available in four different models: RA18AZ24AJVCA, RA18AZ36AJVCA, RA18AZ48AJVCA, and RA18AZ60AJVCA. The product is manufactured by Rheem and is designed to provide optimal performance when matched with appropriate coil components to meet Energy Star standards. The product is available in R-410A refrigerant and has a SEER2 rating of 18.

Features and Benefits

• SEER2 rating of 18
• Split-system air conditioner and heat pump
• Available in four different models
• Manufactured by Rheem
• Designed to meet Energy Star standards

Model Number Identification

The model number of the Air Conditioners RA18AZ provides information about the product’s brand, product category, SEER2 rating, region, refrigerant, capacity (BTU/HR), major series,voltage, controls, minor series, and type. The model number for each of the four available models is as follows:

• RA18AZ24AJVCA
• RA18AZ36AJVCA
• RA18AZ48AJVCA
• RA18AZ60AJVCA

General Data/Electrical Data

The Air Conditioners RA18AZ has a nominal tonnage of 2.0 to 5.0 depending on the model. The product has a scroll compressor and requires line voltage of 208/230-1-60. The product also has a rated load amps and locked rotor amps, which varies depending on the model.

Accessories/Weighted Sound Power

The Air Conditioners RA18AZ comes with a standard set of accessories that include RETST800SYS, STD, and RXHT-A02. The product also has a weighted sound power level that varies depending on the model.

Clearances

The Air Conditioners RA18AZ requires a wall clearance of 6 inches (152.4 mm).

Product Usage Instructions

To use the Air Conditioners RA18AZ, proper sizing and installation of the equipment is critical to achieve optimal performance. The product must be matched with appropriate coil components to meet Energy Star standards. It is recommended to ask your contractor for details or visit www.energystar.gov for more information.

When using the product, ensure that it is connected to the appropriate line voltage of 208/230-1-60. The product also requires a wall clearance of 6 inches (152.4 mm). It is recommended to use the standard set of accessories that come with the product, including RETST800SYS, STD, and RXHT-A02.

For more information on how to use the Air Conditioners RA18AZ, refer to the user manual provided with the product.

Features and Benefits

• EcoNet® Enabled: Automatic system configuration and optimization
• PlusOne® Diagnostics & Bluetooth Connectivity: With the Rheem Contractor & EcoNet® Apps, built-in technology makes advanced set-up, monitoring, troubleshooting, and repairing the product easier than ever before
• Brushless DC Condenser Motors (BLDC): Enhances  reliability and allows for easier serviceabilit
• Swept Wing Fan Technology: Features quieter operation and improved unit acoustics
• PlusOne® Expanded Valve Space: 3 in. – 4 in. – 5 in. service valve space—provides a minimum working area of 27-square inches for easier access
• PlusOne® Triple Service Access: 15 in. wide, industry leading corner service access, two fastener, removable corner and individual louver panels – makes repairs easier and faster

Air Conditioners

Designates Metric Conversions

Inverter Driven Variable Speed iM Air Conditioner – 208/230/1/60
RA18AZ36AJVCA| Endeavor™ Line Prestige ® Series 3 ton EcoNet® Enabled Inverter Driven Variable Speed iM Air Conditioner – 208/230/1/60
RA18AZ48AJVCA| Endeavor™ Line Prestige ® Series 4 ton EcoNet® Enabled Inverter Driven Variable Speed iM Air Conditioner – 208/230/1/60
RA18AZ60AJVCA| Endeavor™ Line Prestige ® Series 5 ton EcoNet® Enabled Inverter Driven Variable Speed iM Air Conditioner – 208/230/1/60
STANDARD EQUIPMENT

R-410A Refrigerant
Maximum SEER2: 19.0
Maximum EER2: 12
EcoNet® Enabled
Variable Speed Compressor
Compressor Sound Blanket
Variable speed outdoor fan motor
Swept wing fan blade
Field Installed Filter Drier
Front Seating Service Valves
Internal Pressure Relief Valve
Internal Thermal Overload
Low Ambient capability
3-4-5 Expanded Valve Space
Composite Basepan
1″ 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 1
Powder coated paint
Rust resistant screws
QR code
External gauge ports
Service trays

¹ 5 Ton model includes 2 row condenser coil

General Data

GENERAL DATA

Model No.| RA18AZ24AJVCA| RA18AZ36AJVCA| RA18AZ48AJVCA| RA18AZ60AJVCA
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| 210| 212| 222| 252
Compressor Type| Scroll
Outdoor Coil
Net face area – Outer Coil| 22.2| 22.3| 32.5| 32.5
Net face area – Inner Coil| —| —| —| 32.5
Tube diameter – in.| 0.375| 0.375| 0.375| 0.375
Number of rows| 1| 1| 1| 2
Fins per inch| 20| 20| 22| 20
Outdoor Fan
Diameter – in.| 24| 24| 26| 26
Number of blades| 3| 3| 3| 3
Motor hp| 1/5| 1/3| 1/2| 1/2
Shipping weight – lbs.| 226| 244| 263| 316
Operating weight – lbs.| 214| 236| 255| 307
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| 35| 45| 70| 80
Minimum circuit ampacity³| 21| 29| 46| 48
Compressor
Rated load amps| 15| 20.1| 32| 34.1
Locked rotor amps| 35| 35| 50| 50

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.
²HACR type circuit breaker of fuse.
³Refer to National Electrical Code manual to determine wire, fuse and disconnect size requirements.

Accessories

MODEL NO.| RA18AZ24AJVCA| RA18AZ36AJVCA| RA18AZ48AJVCA| RA18AZ60AJVCA
---|---|---|---|---
EcoNet® Smart Thermostat| RETST800SYS| RETST800SYS| RETST800SYS| RETST800SYS
Compressor Sound Cover| STD| STD| STD| STD
Supply / Return Sensor| RXHT-A02| RXHT-A02| RXHT-A02| RXHT-A02

Weighted Sound Power Level

Model

| Sound Power Level [dB(A)] Low Speed/ High Speed| Full Octave Linear Sound Power Level dB – Center Frequency – Hz| Sound Power Level [dB(A)] with Sound Blanket
---|---|---|---
125| 250| 500| 1000| 2000| 4000| 8000
RA18AZ24AJVCA| 68| 47.1| 47.7| 58.8| 57.1| 55.0| 52.7| 45.6| ****

Sound Blankets – Standard

58.9| 29| 36.5| 42| 45.7| 42.3| 43.2| 33
RA18AZ36AJVCA| 72| 42.9| 52.8| 62.7| 63.6| 58.7| 54.1| 52.4
57| 29.2| 36.7| 44.9| 45.4| 42.2| 39.4| 32.2
RA18AZ48AJVCA| 72| 48.2| 55.3| 64.6| 61.7| 56.2| 51.7| 46.2
54| 30.6| 39| 42.2| 42.5| 36.5| 35.2| 35
RA18AZ60AJVCA| 76| 50.7| 62.7| 67.7| 65.4| 64.2| 59.2| 54.9
70| 46.6| 50.5| 62.7| 52.9| 49.4| 46| 41.4

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
RA18AZ24AJVCA| 39| 990| 33.75| 857| 33.75| 857| 41.56| 1055| 37.64| 956| 37.56| 954
RA18AZ36AJVCA| 39| 990| 33.75| 857| 33.75| 857| 41.56| 1055| 37.64| 956| 37.56| 954
RA18AZ48AJVCA| 51| 1295| 35.75| 908| 35.75| 908| 53.56| 1360| 39.37| 999| 39.64| 1006
RA18AZ60AJVCA| 51| 1295| 35.75| 908| 35.75| 908| 53.56| 1360| 39.37| 999| 39.64| 1006

CLEARANCES

NOTE: NUMBERS IN () = mm

CLEARANCES
IMPORTANT: When installing multiple units in an alcove, roof well or partially enclosed area, ensure there is adequate ventillation to prevent re- circulation of discharge air.

Control Wiring

Application Guidelines

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

Refrigerant Line Size Information

18 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 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:

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

18 SEER2 Variable Speed Air Conditioners

Unit Size

| Allowable Liquid Line Size| Allowable Vapor Line Size| Outdoor Unit ABOVE or BELOW Indoor Unit Equivalent Length (Meters)
< **8| 8- 15| 16- 23| 24- 30| 31- 38| 39- 46
Maximum Vertical Separation/Capacity Multiplier**

2 Ton* SEE NOTE 3

| 6.35 [1/4]| 15.88 [5/8]| 8/1.00| 15/0.99| 1/0.98| 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| 1/0.99| 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:

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

Performance Data @ AHRI Standard Conditions – Cooling

Designated Tested Combination (DTC)

Outdoor Unit| Indoor Coil| Total Capacity BTU/H [kW]| Net Sensible BTU/H [kW]| Net Latent BTU/H [kW]| SEER2| EER2| Indoor CFM [L/s]
RA18AZ24AJVC| RHMVZ2421MEACN| 22400| [6.6]| 17200| [5.0]| 5200 [1.5]| 18.0| 10.5| 825 [389.4]
RA18AZ36AJVC| RHMVZ6021SEACA| 34600 [10.1]| 25800| [7.6]| 8800 [2.6]| 18.0| 10.5| 1225 [578.1]
RA18AZ48AJVC| RHMVZ6021SEACA| 45000 [13.2]| 32600| [9.6]| 12400 [3.6]| 18.0| 10.5| 1575 [743.3]
RA18AZ60AJVC| RHMVZ6024SEACN| 55000 [16.1]| 40200 [11.8]| 14800 [4.3]| 18.0| 10.5| 1650 [778.7]

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.

Integrated Controls

EcoNet® is smart, technology developed exclusively by Rheem that allows Heating, Cooling,and Water Heating products to communicate with each other on one integrated network.

THE ECONET® SMART THERMOSTAT

• BUILT-IN WIFI
• 4.30 LCD TOUCH SCREEN
• LOCAL WEATHER – Current conditions plus 6-day forecast
• 5 OPERATING MODES – Heat, Cool, Auto, Emergency Heat and Fan Only
• 7-DAY PROGRAMMABLE SCHEDULE – Offers comfort without thought
• ONE-TOUCH AWAY – Quickly switch to your energy-saving away preferences
• VACATION SCHEDULING – Allows you to save while you’re away and come home to comfort
• STANDBY SCREEN – Displays indoor temperature and current weather

OPERATIONAL FEATURES

• AUTOMATIC CHANGEOVER – Transitions between heating and cooling automatically to keep the house comfortable
• INTEGRATED WATER CONTROL – Enables easy water heater management
• SMOOTH ARRIVAL – Prompts the system to start ahead of schedule to ensure the home is at the desired temperature at the scheduled time
• HUMIDITY CONTROL – Supports humidifier accessories or over-cool based dehumidification
• DETAILED OPERATING STATUS – View pertinent equipment status information and run times
• CONTINUOUS FAN – Offers 5 speeds (Low, Medium Low, Medium, Medium High, High)
• SHORT-CYCLE PROTECTION – Avoids damage to equipment from short run cycles

MONITORING & REMOTE CONTROL FEATURES

• ACTIVE MONITORING – Alerts to problems that need immediate attention
• REMOTE CONTROL – Allows adjusting of comfort and settings from anywhere using a mobile device
• SERVICE ALERTS – Sends routine maintenance reminders
• AIR FILTER MONITORING – Detects when it’s time to replace the air filter
• ALARM HISTORY – Displays time-stamped alarm codes with clear descriptions

GENERAL TERMS OF LIMITED WARRANTY

Rheem will furnish a replacement for any part of this product which 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 Unit Replacement
(Registration Required)……………………………….Ten (10) Years
Parts…………………………………………………………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.

© 2022 Rheem Manufacturing Company. Rheem trademarks owned by Rheem Manufacturing Company.
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.

Rheem Heating, Cooling & Water Heating • 5600 Old Greenwood Road
Fort Smith, Arkansas 72908 • www.rheem.com

Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1
Brampton, Ontario • L6Y 0P5 • rheem.ca.com

=A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with Department of Energy test procedures.
*Proper sizing and installation of equipment is critical to achieve optimal performance. Split system air conditioners and heat pumps must be matched with appropriate coil components to meet Energy Star. Ask your Contractor for details or visit www.energystar.gov.

RA18AZ
EcoNet® Enabled
Cooling Efficiency: 19.0 SEER2/12 EER2
Nominal Sizes: 2 to 5 Tons [7.0 to 17.6 kW] Cooling Capacities: 22.8 to 54 kBTU [6.7 to 15.83 kW]

References

• ahridirectory.org
• Homepage | ENERGY STAR
• Global Leader and Manufacturer of Heating, Cooling, and Water Heating Products - Rheem Manufacturing Company

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