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WL14F1 Roof-Mounted Bus Air Conditioner — Capacity Matching Guide
Selection guide SG-WL14F1 | How to size a roof AC for 6–7 m buses — and why the WL14F1 is the matched answer in this length band.
- Overview
- Recommended Products
1. Sizing a 6–7 m Bus Air Conditioner
For a 6.0–7.0 m bus — school shuttle, staff bus, intercity minibus — the practical cooling requirement sits in the 14–18 kW band depending on glazing, insulation and passenger count. Undersize the unit and the cabin never pulls down; oversize it and the compressor short-cycles, wasting fuel and shortening clutch life.
The WL14F1 is rated at 16 kW standard / 18 kW maximum cooling capacity with 3,200 m³/h evaporator airflow — the matched middle of that band, sized to hold target temperature at full passenger load on a 35 °C day.
2. Official Technical Data
Parameter |
Value |
Cooling capacity |
16 kW (54,592 BTU) |
Applicable vehicle |
6.0 – 7.0 m bus |
Dimensions |
2000 × 1560 × 203 mm |
Weight |
≤ 95 kg |
Voltage |
DC 12V / 24V |
Evaporator airflow |
3,200 m³/h |
Condenser airflow |
4,800 m³/h |
JS32 / JS38 — 303 cc |
|
Refrigerant |
R134a — 2.2 kg |
Condenser / evaporator fans |
2 / 4 pcs |
Condenser coil |
Parallel flow (aluminium) |
Evaporator coil |
Fin and tube (copper) |
Fig. 1 — Official WL14F1 technical parameter table (manufacturer's catalogue data)
Fig. 2 — WL14F1 complete roof unit (external view)
3. Why 4 Evaporator Fans + 2 Condenser Fans
Fan configuration is the unsung sizing factor. The WL14F1 uses 4 evaporator blowers (ZHF283502) to spread 3,200 m³/h across the full cabin length and 2 condenser fans (LNF273107C) to reject heat at idle and low speed — the two conditions that kill under-ventilated units.
Fig. 3 — Assembly view: matched evaporator and condenser sections on the production line
Fig. 4 — Internal layout: blowers, copper/aluminium coils and sealed harness
4. Kit Configuration — Component BOM
Component |
Model / Brand |
Qty |
Compressor |
JS32 / JS38 (joint venture) |
1 |
Evaporator blower |
ZHF283502 (joint venture) |
4 |
Condenser fan |
LNF273107C (joint venture) |
2 |
Expansion valve |
TGEN3.5T (Danfoss) |
1 |
Sight glass |
SGN12S (Danfoss Denmark) |
1 |
Drier filter |
TX8109001-18F1-00 |
1 |
Pressure valve |
High / low (China) |
2 |
Receiver |
LM14F1 (Liming) |
1 |
Control panel |
LM824 (Liming) |
1 |
Relay |
HKE (joint venture) |
1 set |
Hoses |
Copper tube + hoses per bus |
1 set |
5. Installation & Roof Opening
Roof-cutting drawing supplied with every unit; mounting per the LM14F1 platform pattern with sealed return-air flanging. Full drawing in PDF/DWG format included.
Fig. 5 — Manufacturer's roof-cutting drawing: exact cut-outs and mounting points (mm)
6. Buyer FAQ
Q1. What buses is the WL14F1 for?
6.0–7.0 m buses and minibuses — school shuttles, staff buses, intercity minibuses — with a 16 kW standard / 18 kW maximum capacity.
Q2. Can it run on 12V or 24V?
Yes — the electric control system is available in DC 12V and DC 24V; specify your fleet voltage.
Q3. Is the compressor included?
Two options: roof assembly only, or full kit with JS32/JS38 compressor, clutch, belt and refrigerant lines per bus length.
Q4. Which components are branded?
Danfoss expansion valve (TGEN3.5T) and sight glass (SGN12S), joint-venture compressor and fans, HKE relays, Liming coils and LM824 control panel.
Q5. What is the lead time?
Stock units dispatch within 7 days; full kit orders follow production schedule.
Contact Our Export Team
Hunan Weili Auto Parts Appliance Co., Ltd. — founded in 2007, ISO 9001 & IATF 16949 certified manufacturer of bus & truck AC parts, electric fans, blowers, lighting and alternator components.
WhatsApp / WeChat: +86-18670382782 | Landline: +86-0731-82034997 / 82034998
E-Mail: [email protected] | Websites: www.weilipart.com | www.weiliautomotive.com | www.cooliparts.com
Send us your OEM part number, vehicle model or drawing — we will reply within 24 hours with a quotation and technical data sheet.
