Comfort-Aire ME Series Water Source Heat Pumps
Models: Sizes 024 (2 ton, 7 kW) through 072 (6 tons, 21.1 kW)
Application: Energy Efficient Heating & Cooling for Residential Applications
Refrigerant: R454B (Environmentally-friendly low-GWP)
Key Features
- Exceeds ASHRAE 90.1 efficiency standards
- Intelligent variable speed Constant Volume (CV) EC blower motors for precise airflow control and soft-start
- Part-load operation significantly lowers annual operating costs
- Galvanized-steel cabinet with Bright White polyester powder coated finish and stainless-steel access panels
- Sound-absorbing glass-fiber insulation
- Unique double-isolation compressor mounting with vibration isolation for quieter operation
- Insulated divider and separate compressor/air-handler compartments
- TXV metering device (horizontal configurations only)
- Field-convertible supply-air arrangement
- Unit Performance Sentinel performance-monitoring system
- Eight standard safety features
- Easy-to-clean rust-prohibitive stainless-steel drain pans
- M2.5 Advanced Communicating Controls: Connect directly with Wireless Service Tool, provides real-time unit operating conditions, reduces startup/commissioning/service time, captures operating conditions during safety shutdown.
- Anti-short cycle and over/under-voltage protection
- Easy-access control box
- High-pressure, loss-of-charge, and condensate-overflow protection
- LED fault and status indication at controller
- Tin-plated air coils for added protection from formicary corrosion (Models 060 - 072)
- Aluminum Microchannel air coils for added protection and improved efficiency (Models 024 - 048)
- Extended-range insulation for geothermal applications
- Return air filter frames for 2-inch MERV 11 filter
Unit Dimensions
Horizontal Models
| Model | A Width (in/cm) | B Length (in/cm) | C Height (in/cm) |
|---|---|---|---|
| 024 | 22.4 / 56.8 | 62.2 / 158.0 | 19.3 / 48.9 |
| 036 | 25.4 / 64.5 | 71.2 / 180.8 | 21.3 / 54.0 |
| 048 | 25.4 / 64.5 | 76.2 / 193.5 | 21.3 / 54.0 |
| 060 & 072 | 25.4 / 64.5 | 81.2 / 206.2 | 21.3 / 54.0 |
Vertical Upflow Models
| Model | A Width (in/cm) | B Depth (in/cm) | C Height (in/cm) |
|---|---|---|---|
| 024 | 22.4 / 56.8 | 25.6 / 65.1 | 48.5 / 123.2 |
| 036 | 25.4 / 64.5 | 30.6 / 77.8 | 50.5 / 128.3 |
| 048 | 25.4 / 64.5 | 30.6 / 77.8 | 54.5 / 138.4 |
| 060 & 072 | 25.4 / 64.5 | 30.6 / 77.8 | 58.5 / 148.6 |
Package Unit Auxiliary/Emergency Heaters
| Part Number | kW @ 240V Single Phase | Number of Circuits | Used with Models (24, 36, 48-70) |
|---|---|---|---|
| HGM05ACG | 4.8 | 1 | X |
| HGM08ACG | 7.6 | 1 | X |
| HGM10ACG | 9.6 | 1 | X |
| HGM12ACG | 11.4 | 2 | X |
| HGL10ACG | 9.6 | 1 | X, X |
| HGL15ACG | 14.4 | 2 | X, X |
| HGL20ACG | 19.2 | 2 | X |
| 16B0002N02 | Single Circuit Adapter Kit for 2 circuit heaters | ||
Physical Data Summary
| Attribute | 024 | 036 | 048 | 060 | 072 |
|---|---|---|---|---|---|
| Compressor (1 Each) | Scroll | Scroll | Scroll | Scroll | Scroll |
| Factory Charge HFC/HFO-454B (oz.) | 34 | 43 | 59 | 102 | 109 |
| Water Connection Size (Swivel) | 1" | 1" | 1" | 1" | 1" |
| System Water Volume (gallons)¹ | 0.323 | 0.738 | 0.890 | 0.939 | 0.939 |
| Vertical Configuration | |||||
| Filter Standard - 2" Throwaway | 28 x 24 | 28 x 29.5 | 32 x 29.5 | 36 x 29.5 | 36 x 29.5 |
| Weight - Operating (lbs.) | 298 | 359 | 448 | 475 | 475 |
| Weight - Packaged (lbs.) | 208 | 369 | 458 | 485 | 485 |
| Horizontal Configuration | |||||
| Filter Standard - 2" Throwaway | 1 - 12 x 20 | 1 - 20 x 25 | 2 - 18 x 18 | 2 - 20 x 24 | 2 - 20 x 24 |
| Weight - Operating (lbs.) | 298 | 359 | 448 | 475 | 475 |
| Weight - Packaged (lbs.) | 208 | 369 | 458 | 485 | 485 |
| Downflow Configuration | |||||
| Filter Standard - 2" Throwaway | 28 x 24 | 28 x 29.5 | 32 x 29.5 | 36 x 29.5 | 36 x 29.5 |
| Weight - Operating (lbs.) | 298 | 359 | 448 | 475 | 475 |
| Weight - Packaged (lbs.) | 208 | 369 | 458 | 485 | 485 |
| Hot Water Generator | |||||
| Swivel - Residential Class | 1" | 1" | 1" | 1" | 1" |
| Weight - HWG Adder (lbs.) | +15 | +15 | +15 | +15 | +15 |
Notes: All dimensions are in inches unless otherwise marked. Units have TXV expansion device and 1/2-inch and 3/4-inch electrical knockouts. Stainless Steel Condensate Drain Connection is 3/4-inch MPT. FPT=Female Pipe Thread. O = Optional, R = Required. ¹ Volume without water options.
Unit Maximum Water Working Pressure
| Options | Max Pressure PSIG [kPa] |
|---|---|
| Base Unit | 300 [2,068] |
| Internal Modulating Valve | 300 [2,068] |
Performance Data (Tested to ASHRAE/AHRI/ISO 13256-1 English Units)
Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperature. Heating capacities based upon 68°F DB, 59°F WB entering air temperature. Ground Loop Heat Pump ratings based on 15% antifreeze solution. All ratings based upon operation at lower voltage of dual voltage rated models.
| Model | Water Loop Heat Pump - Cooling 86°F | Water Loop Heat Pump - Heating 68°F | Ground Water Heat Pump - Cooling 59°F | Ground Water Heat Pump - Heating 50°F | Ground Loop Heat Pump - Full Cool 77°F / Part Cool 68°F | Ground Loop Heat Pump - Full Heat 32°F / Part Heat 41°F | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Capacity (Btuh) | EER (Btuh/W) | Capacity (Btuh) | COP | Capacity (Btuh) | EER (Btuh/W) | Capacity (Btuh) | COP | Capacity (Btuh) | EER (Btuh/W) | Capacity (Btuh) | COP | |
| ME024 Part | 17,900 | 19.2 | 20,100 | 6.6 | 20,200 | 36.2 | 17,100 | 5.7 | 19,400 | 27.9 | 18,900 | 4.4 |
| ME024 Full | 25,300 | 17.1 | 29,000 | 5.7 | 28,600 | 26.2 | 23,400 | 5.0 | 26,300 | 19.9 | 17,800 | 4.1 |
| ME036 Part | 26,400 | 20.2 | 30,600 | 6.5 | 30,200 | 35.3 | 25,800 | 5.6 | 28,500 | 29.7 | 22,700 | 5.0 |
| ME036 Full | 37,500 | 17.0 | 43,100 | 5.4 | 41,000 | 24.4 | 35,700 | 4.9 | 39,000 | 18.8 | 28,400 | 4.2 |
| ME048 Part | 35,700 | 19.6 | 42,900 | 6.5 | 41,000 | 41.8 | 33,700 | 5.3 | 37,400 | 28.6 | 29,000 | 4.7 |
| ME048 Full | 48,000 | 17.2 | 60,200 | 5.3 | 54,600 | 26.0 | 49,100 | 4.5 | 51,700 | 1934 | 38,100 | 3.9 |
| ME060 Part | 42,200 | 18.9 | 44,800 | 5.9 | 48,000 | 32.9 | 35,900 | 4.8 | 46,400 | 27.5 | 30,900 | 4.1 |
| ME060 Full | 61,800 | 16.9 | 67,300 | 5.3 | 66,800 | 24.7 | 55,700 | 4.7 | 62,600 | 18.7 | 44,300 | 3.9 |
| ME072 Part | 53,500 | 17.9 | 59,200 | 5.4 | 61,400 | 34.8 | 48,000 | 4.8 | 58,000 | 24.1 | 42,400 | 4.1 |
| ME072 Full | 72,000 | 16.1 | 81,400 | 4.9 | 77,000 | 22.4 | 67,400 | 4.4 | 74,700 | 18.4 | 54,000 | 3.8 |
Compliance and Disclaimers
This product complies with all California product labeling laws including, but not limited to, the Safe Drinking Water and Toxic Enforcement Act of 1986, more commonly known as Proposition 65.
Due to ongoing product improvements, specifications and dimensions are subject to change and correction without notice or incurring obligations. Determining the application and suitability for use of any product is the responsibility of the installer. Additionally, the installer is responsible for verifying dimensional data on the actual product before beginning any installation preparations. All products meet applicable regulations in effect on date of manufacture; however, certifications aren't necessarily granted for life of the product. It is the responsibility of the applicant to determine whether a specific model qualifies for third party incentive/rebate programs (Federal, state, utilities, etc.).
