Description
This LG single-zone ducted heat pump system pairs outdoor model KUSXE421A with a Multi-Position AHU indoor unit (listed on submittal as KNSLE422A) for one-zone ducted comfort delivery. It’s designed for larger single zones that still need the clean look and balanced airflow that ductwork provides, while using a modern refrigerant platform and published performance data that spec-driven buyers will actually reference. This type of system is often selected when a space needs ducted distribution across multiple rooms or a large open area, but you don’t want the complexity of multi-zone zoning. For property managers and light commercial spaces, it’s a practical way to standardize comfort delivery and keep equipment selection aligned with published specifications.
Performance snapshot (from provided submittal): cooling capacity (min/rated/max) 17,000 / 41,000 / 48,000 BTU/h, and heating capacity (min/rated/max) 18,000 / 42,000 / 44,000 BTU/h. Efficiency is listed at 16.0 SEER2, 8.20 EER2, and 8.5 HSPF2. Outdoor operating range is listed as 14°F–118°F (cooling) and 4°F–64°F (heating). Refrigerant type is R32, with EEV refrigerant control noted in the system data.
Acoustics and airflow are listed at levels consistent with ducted comfort expectations: outdoor sound pressure is listed at 52/54 dBA (cooling/heating) and indoor sound pressure is listed at 41/38/36 dBA (high/medium/low). Indoor airflow is listed at 1,225/1,100/1,000 CFM (max high/medium/low), and maximum outdoor air volume is listed at 2,825 CFM. The AHU also includes an access panel for a field-supplied 20 x 20 x 1 filter, which is a practical detail for ongoing service planning.
Electrical and layout planning details (from submittal) list power supply at 208-230 V, 60 Hz, 1 phase, with MOP 35 A and MCA 30.1 A. Acceptable operating voltage is listed as 187V–253V. Maximum vertical separation between outdoor and indoor is listed at 98.4 ft. Control planning remains essential: this Multi-Position AHU requires an LG wall controller because it does not have an infrared receiver.
Key Features
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Single-zone ducted heat pump pairing: ODU KUSXE421A paired to a Multi-Position AHU platform for ducted comfort delivery.
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Verified capacity range: listed cooling 17,000 / 41,000 / 48,000 BTU/h and heating 18,000 / 42,000 / 44,000 BTU/h (min/rated/max).
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Verified efficiency ratings: listed 16.0 SEER2, 8.20 EER2, and 8.5 HSPF2 for this pairing.
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Verified operating range: listed 14°F–118°F cooling and 4°F–64°F heating outdoor range.
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Verified sound pressure: listed ODU 52/54 dBA and IDU 41/38/36 dBA (cool/heat and high/med/low).
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Airflow and filter access: listed IDU airflow up to 1,225 CFM and filter access panel for 20 x 20 x 1 field-supplied filter.
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Wall controller required: Multi-Position AHU requires an LG wall controller (no infrared receiver).
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