B6bmm024k A
The B6BMM024K-A is a high-efficiency 2-ton residential multi-position air handler manufactured by Nortek Global HVAC (formerly Nordyne), marketed under trusted heating and cooling brands including Gibson, Frigidaire, Philco, Intertherm, and Kelvinator. Designed to pair seamlessly with two-ton central air conditioners and split-system heat pumps utilizing environmentally friendly R-410A refrigerant, the B6BMM024K-A incorporates an energy-saving multi-speed PSC or ECM blower motor, an all-aluminum Micro-Channel evaporator coil, and versatile multi-position cabinet installation flexibility.
Engineering Architecture and Nomenclature Decoded
In modern HVAC service and installation, decoding factory model nomenclature is essential for verifying system compatibility and matching SEER ratings. In the model string B6BMM024K-A, 'B6' identifies the high-efficiency residential modular air handler series; 'B' designates a galvanized steel cabinet with a durable baked enamel finish; 'MM' indicates a multi-position configuration with a multi-speed blower motor; '024' represents the nominal cooling capacity of 24,000 BTUs per hour (exactly 2.0 tons); 'K' indicates 208/230-volt single-phase electrical operation; and 'A' denotes the engineering revision designator.
A standout mechanical advancement in the B6BMM024K-A series is the integration of an all-aluminum evaporator coil. Traditional copper tube and aluminum fin coils suffer from galvanic formarylic acid corrosion and microscopic pinhole leaks over years of exposure to household VOCs and moisture. The all-aluminum construction eliminates dissimilar metal contact, offering superior thermal conductivity, lighter handling weight, and unmatched resistance against refrigerant leaks.
Examine engineering specifications, electrical ratings, and operational capacities for the B6BMM024K-A:
| Specification Parameter | Factory Engineering Rating | Technical Operational Detail | HVAC Industry Standard | Field Benefit |
|---|---|---|---|---|
| Nominal Cooling Capacity | 24,000 BTU/hr (2.0 Tons) | Matches 2.0-ton outdoor condensing units | AHRI Certified standard | Ideal for 1,000 to 1,400 sq ft homes |
| Electrical Power Supply | 208 / 230 Volts, 1-Phase, 60 Hz | Dedicated 15-Amp minimum circuit ampacity | NEC residential standard | Standard residential electrical hookup |
| Blower Motor Technology | Multi-Speed Tap Motor | Delivers 700 to 900 CFM airflow range | Calibrated for 400 CFM per ton | Balances static pressure & duct velocity |
| Evaporator Coil Type | All-Aluminum Micro-Channel | R-410A compatible with factory TXV | AHRI matched coil rating | Virtually eliminates formicary corrosion |
| Cabinet Configuration | Multi-Position (Upflow/Downflow/Horiz) | Field-convertible with zero extra kits | Standard galvanized cabinet | Fits tight attics, closets, and basements |
Review the technical specifications and operational ratings of the B6BMM024K-A air handler:
Airflow CFM Balancing, Electric Heat Strips, and Static Pressure
Optimal performance of the B6BMM024K-A relies on precise airflow calibration. In residential air conditioning, the established engineering rule of thumb requires 400 cubic feet per minute (CFM) of airflow per ton of cooling capacity, dictating an 800 CFM target for this 2-ton unit across standard 0.3 to 0.5 inches of water column (in. w.c.) external static pressure. Field technicians calibrate blower speed taps on the internal control board to match specific ductwork static pressure.
For winter heating in cold climates, the B6BMM024K-A features integrated mounting tracks that accept optional field-installed electric auxiliary heat strip kits (H6HK series) ranging from 5 kW to 10 kW. These resistance heating elements provide emergency supplemental heat when paired with split-system heat pumps during sub-freezing ambient temperatures, complete with built-in circuit breakers.
Review external static pressure airflow CFM benchmarks and electric heat strip ratings:
| Blower Speed Tap | Airflow @ 0.3 in. w.c. | Airflow @ 0.5 in. w.c. | Compatible Heat Kit | Heating Output (BTU/hr) |
|---|---|---|---|---|
| Low Speed Tap | 680 CFM | 620 CFM | H6HK005H-01 (5 kW) | 17,000 BTU/hr supplemental heat |
| Medium-Low Speed Tap | 790 CFM | 740 CFM | H6HK008H-01 (8 kW) | 27,200 BTU/hr supplemental heat |
| Medium-High Speed Tap (Standard) | 880 CFM | 830 CFM | H6HK010H-01 (10 kW) | 34,100 BTU/hr supplemental heat |
| High Speed Tap | 1,010 CFM | 950 CFM | H6HK010H-01 (10 kW) | Maximum airflow for high-static ductwork |
Consult the blower performance and electric heat compatibility data outlined below:
Installation Protocols, Condensate Drainage, and Maintenance
Installing the B6BMM024K-A requires careful attention to cabinet orientation and condensate management. The unit features built-in dual primary and secondary 3/4-inch NPT condensate drain ports. When installed horizontally in an attic or crawlspace, the drain line must incorporate a functional P-trap with at least two inches of water seal to overcome internal blower negative pressure and prevent water from overflowing the internal drain pan.
Routine homeowner maintenance focuses on monthly air filter replacement. The B6BMM024K-A utilizes a standard 16x20x1-inch pleated air filter mounted in the lower access door filter rack. Keeping air filters clean prevents restricted airflow, protects the all-aluminum coil from dust accumulation, prevents evaporator coil freeze-up, and preserves peak seasonal energy efficiency.
Proper installation and regular maintenance ensure decades of reliable, quiet climate comfort.
How to Service and Inspect a B6BMM024K-A Air Handler in 5 Steps
Follow these HVAC service steps to conduct a routine operational inspection on a B6BMM024K-A air handler.
Disconnect Electrical Power
Turn off the dedicated 240V breaker in the main electrical panel and switch off the external unit disconnect switch.
Inspect and Replace Air Filter
Remove the lower access panel, extract the 16x20x1-inch air filter, and install a fresh high-efficiency pleated filter.
Inspect the Evaporator Coil
Remove the upper coil door and inspect the all-aluminum Micro-Channel coil faces for dirt, lint, or frost build-up.
Clear Condensate Drain Lines
Pour a 50/50 mixture of white vinegar and warm water through the primary condensate drain line to dissolve biological algae.
Verify Blower Operation
Restore power, set the thermostat to cooling mode, and verify that the blower starts smoothly without vibration or bearing squeal.
Frequently Asked Questions (8 Questions Answered)
Q1: What is the tonnage of the B6BMM024K-A air handler?
The '024' in the model number designates 24,000 BTU/hr, which equals exactly 2.0 tons of nominal cooling capacity.
Q2: Who manufactures the B6BMM024K-A air handler?
It is manufactured by Nortek Global HVAC (formerly Nordyne) under brands including Frigidaire, Gibson, Intertherm, Philco, and Westinghouse.
Q3: What refrigerant is used with the B6BMM024K-A?
It is engineered for R-410A refrigerant and features a factory-installed or field-connected thermal expansion valve (TXV) or orifice.
Q4: Can the B6BMM024K-A be installed horizontally?
Yes, the B6BMM024K-A is a multi-position air handler that can be installed in upflow, downflow, horizontal left, or horizontal right orientations.
Q5: What size air filter does the B6BMM024K-A use?
The unit typically utilizes a standard 16x20x1-inch air filter located in the bottom return air filter rack.
Q6: Can you add electric heat to the B6BMM024K-A?
Yes, it accepts optional H6HK series field-installed electric heat strip kits ranging from 5 kW to 10 kW for supplemental winter heating.
Q7: Why is the all-aluminum coil advantageous?
The all-aluminum Micro-Channel coil eliminates dissimilar metal galvanic corrosion, virtually eliminating formicary acid pinhole refrigerant leaks.
Q8: What is the CFM rating of this 2-ton air handler?
The multi-speed blower motor delivers between 700 and 950 CFM, calibrated to meet the standard 400 CFM per ton target at 800 CFM.
Final Thoughts & Key Takeaways
In conclusion, understanding b6bmm024k a provides essential clarity, practical strategies, and actionable advice. By incorporating these foundational insights, adhering to verified safety guidelines, and following structured best practices, you ensure reliable, long-term outcomes while preventing common mistakes. Stay informed, consult certified professionals when needed, and maintain consistent quality care.