Corridor and perimeter zones typically carry the largest terminal count in a building and the longest running hours, making them the first place an energy manager reviews when a consumption report arrives. The Midea One-way Cassette Fan Coil Unit is engineered for that audit trail. A 153mm chassis fits the narrow ceiling voids above corridors, lobbies and room entryways where standard cassettes cannot go, and single-direction discharge throws air along the hallway instead of loading the walls, so the zone is served at the capacity it actually needs. Across the combined AC and DC range the family spans 300–600 CFM and 2.65–5.20 kW of cooling, meaning one product line covers an entire corridor schedule without mixing suppliers or spare-part sets.
Fan energy is the part of a terminal's consumption that a specification can still influence at design stage. The DC inverter brushless version uses a seven-speed motor driven from the KJR-75A wired controller and draws as little as 14W, against 32–40W for the AC equivalent, cutting fan energy by up to 30%. It also runs 2–5 dB(A) quieter, and that matters as much as the kWh figure: quieter terminals let a corridor or ward run at low speed without complaint, so the low-watt setting is actually used instead of being overridden. ERP compliance and RoHS conformance are standard across the range, giving consultants the documentation they need without a separate request.
Measurement is where sustainability targets are proven. Units run on standard 220–240V / 1Ph / 50Hz supply, and Hongtai's OEM/ODM programme adds custom voltages from 180–440V at 50/60Hz, project branding, and Modbus RTU or BACnet protocols so corridor terminals report into the building's energy monitoring platform instead of sitting outside it. Power-off memory restores settings after outages so energy set-backs survive a power event, and the washable filter pulls out from below for quick cleaning, because a terminal that is easy to maintain keeps its rated performance for the whole lifecycle. Specifications of this kind support green building targets across corridor and guestroom floors.
Treat this as a metering decision rather than a comfort decision. The AC version is the compliant baseline: a proven three-speed motor, 32–40W input, and the lowest unit price, which suits corridors on intermittent schedules or projects where terminal load is a small share of total consumption. The DC inverter brushless version is the lifecycle choice: from 14W at minimum speed, up to 30% lower fan energy, and 2–5 dB(A) quieter, all from the same 153mm body, 750mm pump and G1/2" connections. Because the installation method is identical, the motor decision is purely an operating-cost decision, and on a corridor with hundreds of running hours per year that is exactly where the difference accumulates.
The DC inverter brushless motor cuts fan energy by up to 30% and draws as little as 14W at minimum speed, against 32–40W for the AC version. Real savings depend on running hours and the speed each zone is balanced at.
It confirms the range meets the EU Energy-related Products Directive requirements, and RoHS conformance covers hazardous-substance restriction. Together they provide the documentation normally requested in European tenders and green procurement checklists.
Yes. Modbus RTU and BACnet protocols are available through Hongtai's OEM/ODM programme, so corridor units report into the same platform as the rest of the plant instead of being metered separately.
The DC range runs from 14W to 38W depending on speed, with 14W as the minimum-speed figure. Power-off memory restores the previous settings after an outage, so the unit returns to its balanced speed rather than defaulting to maximum output.
The 153mm body is among the slimmest in its class and fits the voids above corridors and entryways where standard cassettes cannot go. Confirm hanger and service clearances against the installation manual; structural modification is normally unnecessary.
| Parameter | AC Series | DC Series |
|---|---|---|
| Airflow Range | 300–400 CFM | 300–600 CFM |
| Cooling Capacity | 3.04–3.79 kW | 2.65–5.20 kW |
| Heating Capacity | 5.13–6.41 kW | 3.15–5.75 kW |
| Power Input | 32–40 W | 14–38 W |
| Sound Pressure Level (H) | 36–37 dB(A) | 33.5–44.6 dB(A) |
| Power Supply | 220–240V / 1Ph / 50Hz | 220–240V / 1Ph / 50Hz |
| Drain Pump Head | 750 mm | 750 mm |
| Body Height | 153 mm | 153 mm |
| Coil Rows | 2 | 2 |
| Max. Working Pressure | 1.6 MPa | 1.6 MPa |
| Motor Type | Low-noise 3-speed AC | DC Brushless |
| Pipe Connection | G1/2" | G1/2" |
Corridor and perimeter zones typically carry the largest terminal count in a building and the longest running hours, making them the first place an energy manager reviews when a consumption report arrives. The Midea One-way Cassette Fan Coil Unit is engineered for that audit trail. A 153mm chassis fits the narrow ceiling voids above corridors, lobbies and room entryways where standard cassettes cannot go, and single-direction discharge throws air along the hallway instead of loading the walls, so the zone is served at the capacity it actually needs. Across the combined AC and DC range the family spans 300–600 CFM and 2.65–5.20 kW of cooling, meaning one product line covers an entire corridor schedule without mixing suppliers or spare-part sets.
Fan energy is the part of a terminal's consumption that a specification can still influence at design stage. The DC inverter brushless version uses a seven-speed motor driven from the KJR-75A wired controller and draws as little as 14W, against 32–40W for the AC equivalent, cutting fan energy by up to 30%. It also runs 2–5 dB(A) quieter, and that matters as much as the kWh figure: quieter terminals let a corridor or ward run at low speed without complaint, so the low-watt setting is actually used instead of being overridden. ERP compliance and RoHS conformance are standard across the range, giving consultants the documentation they need without a separate request.
Measurement is where sustainability targets are proven. Units run on standard 220–240V / 1Ph / 50Hz supply, and Hongtai's OEM/ODM programme adds custom voltages from 180–440V at 50/60Hz, project branding, and Modbus RTU or BACnet protocols so corridor terminals report into the building's energy monitoring platform instead of sitting outside it. Power-off memory restores settings after outages so energy set-backs survive a power event, and the washable filter pulls out from below for quick cleaning, because a terminal that is easy to maintain keeps its rated performance for the whole lifecycle. Specifications of this kind support green building targets across corridor and guestroom floors.
Treat this as a metering decision rather than a comfort decision. The AC version is the compliant baseline: a proven three-speed motor, 32–40W input, and the lowest unit price, which suits corridors on intermittent schedules or projects where terminal load is a small share of total consumption. The DC inverter brushless version is the lifecycle choice: from 14W at minimum speed, up to 30% lower fan energy, and 2–5 dB(A) quieter, all from the same 153mm body, 750mm pump and G1/2" connections. Because the installation method is identical, the motor decision is purely an operating-cost decision, and on a corridor with hundreds of running hours per year that is exactly where the difference accumulates.
The DC inverter brushless motor cuts fan energy by up to 30% and draws as little as 14W at minimum speed, against 32–40W for the AC version. Real savings depend on running hours and the speed each zone is balanced at.
It confirms the range meets the EU Energy-related Products Directive requirements, and RoHS conformance covers hazardous-substance restriction. Together they provide the documentation normally requested in European tenders and green procurement checklists.
Yes. Modbus RTU and BACnet protocols are available through Hongtai's OEM/ODM programme, so corridor units report into the same platform as the rest of the plant instead of being metered separately.
The DC range runs from 14W to 38W depending on speed, with 14W as the minimum-speed figure. Power-off memory restores the previous settings after an outage, so the unit returns to its balanced speed rather than defaulting to maximum output.
The 153mm body is among the slimmest in its class and fits the voids above corridors and entryways where standard cassettes cannot go. Confirm hanger and service clearances against the installation manual; structural modification is normally unnecessary.
| Parameter | AC Series | DC Series |
|---|---|---|
| Airflow Range | 300–400 CFM | 300–600 CFM |
| Cooling Capacity | 3.04–3.79 kW | 2.65–5.20 kW |
| Heating Capacity | 5.13–6.41 kW | 3.15–5.75 kW |
| Power Input | 32–40 W | 14–38 W |
| Sound Pressure Level (H) | 36–37 dB(A) | 33.5–44.6 dB(A) |
| Power Supply | 220–240V / 1Ph / 50Hz | 220–240V / 1Ph / 50Hz |
| Drain Pump Head | 750 mm | 750 mm |
| Body Height | 153 mm | 153 mm |
| Coil Rows | 2 | 2 |
| Max. Working Pressure | 1.6 MPa | 1.6 MPa |
| Motor Type | Low-noise 3-speed AC | DC Brushless |
| Pipe Connection | G1/2" | G1/2" |