Lennox MERIT Series CBA25UH Air Handler
The Lennox MERIT Series CBA25UH is an air handler designed for R-410A systems, suitable for upflow or horizontal applications. It offers nominal capacities from 1.5 to 5 tons and optional electric heat from 5 to 20 kW.
Model Number Identification
The model number, such as CBA25UH-030-230-10, decodes as follows:
- Unit Type: CB = Air Handler
- Refrigerant Type: A = Aluminum Coil/R-410A
- Series: Configuration
- Unit: UH = Upflow/Horizontal
Nominal Cooling Capacity
- 018 = 1.5 tons
- 024 = 2 tons
- 030 = 2.5 tons
- 036 = 3 tons
- 042 = 3.5 tons
- 048 = 4 tons
- 060 = 5 tons
Key Features and Components
- Quantum™ Coil: Lennox-designed aluminum alloy tube/enhanced fin coil for superior corrosion resistance and heat transfer.
- Refrigerant Line Connections: Copper sweat connections for easy brazing, extending outside the cabinet.
- Check and Expansion Valve: Factory-installed, wide-range valve for R-410A systems.
- Blower Motor: Permanent Split Capacitor (PSC) motor (018-042 models) or Constant Torque Blower Motor (048-060 models) for multi-speed operation.
- Cabinet: Heavy gauge galvanized steel, insulated, with removable panels for service access and thumbscrew-secured filter door.
- Anti-Microbial Dual Position Drain Pans: Corrosion-resistant polymer pans with dual pipe drains, designed for upflow or horizontal applications.
- Air Filter: Disposable 1-inch filter with a factory-furnished rack.
- Controls: Standard 24-volt transformer and blower cooling relay.
Applications
- 1.5 to 5 ton nominal sizes.
- Upflow or horizontal applications (downflow requires an optional conversion kit).
- Compatible with R-410A expansion valve systems and check and expansion valve systems in heat pump applications.
- Optional field-installed electric heaters available.
Approvals and Warranty
- Tested and AHRI Certified system match-ups.
- ETL Listed to US and Canadian safety standards.
- Optional electric heaters are ETL listed and rated per DOE test procedures.
- Approved for installation in manufactured housing and mobile homes.
- ISO 9001 Registered Manufacturing Quality System.
- Warranty: Limited five years in residential applications, limited one year in non-residential applications.
Specifications
| General Data | Model Number | Nominal Tonnage | Suction/Vapor Line (o.d.) | Liquid Line (o.d.) | Net Face Area (ft.²) | Blower Motor Output (hp) | Filter Size | Shipping Data (lbs.) |
|---|---|---|---|---|---|---|---|---|
| CBA25UH-018 | 1.5 | 3/4 in. | 3/8 in. | 3.30 | 1/5 | 15x20x1 in. | 129 | |
| CBA25UH-024 | 2 | 3/4 in. | 3/8 in. | 3.77 | 1/3 | 15x20x1 in. | 136 | |
| CBA25UH-030 | 2.5 | 3/4 in. | 3/8 in. | 4.72 | 1/2 | 15x20x1 in. | 143 | |
| CBA25UH-036 | 3 | 7/8 in. | 3/8 in. | 5.66 | 1/3 | 18x20x1 in. | 169 | |
| CBA25UH-042 | 3.5 | 7/8 in. | 3/8 in. | 5.66 | 1/2 | 18x20x1 in. | 169 | |
| CBA25UH-048 | 4 | 7/8 in. | 3/8 in. | 6.13 | 1 | 18x20x1 in. | 179 | |
| CBA25UH-060 | 5 | 7/8 in. | 3/8 in. | 7.08 | 1 | 18x20x1 in. | 190 |
Electrical Data
| Voltage (1 phase, 60 Hz) | Max Overcurrent Protection (Unit Only) | Min Circuit Ampacity (Unit Only) | Blower Motor Full Load Amps |
|---|---|---|---|
| 208/230V | 15A | 5.0A | 1.1A - 2.5A (Model Dependent) |
Optional Accessories
- iComfort® M30 Smart Wi-Fi Thermostat
- Remote Outdoor Temperature Sensor
- Downflow Conversion Kit
- Electric Heat Kits (5 to 20 kW)
- Horizontal Support Frame Kit
- Side Return Unit Stand (Upflow Only)
- Wall Hanging Bracket Kit (Upflow Only)
- High Performance Economizer (Commercial Only)
- Single-Point Power Source Control Box (for Electric Heat)
Performance Data
Performance tables detailing Air Volume / Watts at various Blower Speeds and External Static Pressure are available for each model (CBA25UH-018 through CBA25UH-060). These tables provide specific airflow and power consumption data for different operating conditions.
Electric Heat Data
Detailed tables provide specifications for optional electric heat kits, including model numbers, input voltage, kW ratings, Btuh output, blower motor amps, minimum circuit ampacity, and maximum overcurrent protection for various configurations and voltages (208V, 220V, 230V, 240V). Models include circuit breaker (CB) versions for integrated protection.
Dimensions
| Dimension | 018 (in./mm) | 024 (in./mm) | 030 (in./mm) | 036, 042 (in./mm) | 048 (in./mm) | 060 (in./mm) |
|---|---|---|---|---|---|---|
| A | 43-1/2 (1105) | 45-1/2 (1156) | 47 (1194) | 53-5/8 (1362) | 55 (1397) | 59-3/4 (1518) |
| B | 18-1/2 (470) | 18-1/2 (470) | 18-1/2 (470) | 21-1/2 (546) | 21-1/2 (546) | 21-1/2 (546) |
| C | 16-1/2 (419) | 16-1/2 (419) | 16-1/2 (419) | 19-1/2 (495) | 19-1/2 (495) | 19-1/2 (495) |
| D | 16-1/4 (413) | 16-1/4 (413) | 16-1/4 (413) | 19-1/4 (489) | 19-1/4 (489) | 19-1/4 (489) |
Installation Clearances
Standard clearances are provided for cabinet, plenum, and outlet duct connections. Front service access requires a minimum of 24 inches (610 mm).
Revisions
Recent revisions include the addition of a Circuit Breaker Cover as standard for all Electric Heat Circuit Breaker (CB) models.
For the latest technical information, visit www.LennoxPros.com. Contact Lennox at 1-800-4-LENNOX.
