Bus is primarily used for tourism, inter-provincial long-distance transport, short-distance transport between urban and rural areas, and urban public transport (city bus). Bus air conditioning system, in other words, application of air conditioning technology in buses, which aims to creates a comfortable temperature inside, protect the health of driver and passengers, and improve work efficiency, simultaneously, increase the driving safety has a positive effect.
| Series | BD-03 | BD-04 | BD-05 | BD-06 |
| Application | 7-8m | 8-9.5m | 9-11.5m | 10-13m |
| Cooling Capacity(kcal/h) | 22000 | 24000 | 28000 | 32000 |
| Evaporator air flow(m³/h) | 4000 | 4000 | 6000 | 8000 |
| Number of evaporator blowers | 4 | 4 | 6 | 8 |
| Fresh air flow(m³/h) | 1000 | 1000 | 1000 | 1750 |
| Size(mm) | 3335*1820*187 | 3335*1820*187 | 3804*1902*210 | 4435*1902*210 |
| Max ambient temperature(℃) | 50 | 50 | 50 | 50 |
| Compressor | Bitzer F400 | Bock 560K | Bock 560K | Bock 655K |
| Compressor displacement(cc) | 400 | 554 | 554 | 650 |

|
Model |
BD-03 |
|
|
Cooling Capacity |
25.6 KW / 22,000 Kcal/h / 87,000 BTU |
|
|
Heating Capacity |
Optional |
|
|
Fresh Air |
1,000 m3/h |
|
|
Refrigerant |
R134a/5.5 kg |
|
|
Compressor |
Model |
TM31 |
|
Displacement |
313 cc |
|
|
Weight |
15.5 kg |
|
|
Oil Type |
ZXL 100PG PAG |
|
|
Evaporator |
Type |
Hydrophilic aluminum foil with internal ridge copper tube |
|
Air Flow |
3,600 m3/h |
|
|
Blower Type |
4-speed centrifugal type |
|
|
No. of Blower |
4 pcs |
|
|
Current |
32A |
|
|
Condenser |
Type |
Aluminum foil with internal ridge copper tube |
|
Air Flow |
4,000 m3/h |
|
|
Fan Type |
Axial type |
|
|
No. of Fan |
2 pcs |
|
|
Current |
16A |
|
|
Total Current |
< 55A |
|
|
Weight of Rooftop Unit |
|
|
|
Application |
6-6.5 Meter Bus & Coach |
|

|
Model |
BD-04 |
|
|
Cooling Capacity |
27.9 KW / 24,000 Kcal/h / 95,000 BTU |
|
|
Heating Capacity |
Optional |
|
|
Fresh Air |
1000 m3/h |
|
|
Refrigerant |
R134a / 8.5 kg |
|
|
Compressor |
Model |
Bitzer F600 |
|
Displacement |
582 cc |
|
|
Weight |
35 kg |
|
|
Oil Type |
BSE55 |
|
|
Evaporator |
Type |
Hydrophilic aluminum foil with internal ridge copper tube |
|
Air Flow |
4,000 m3/h |
|
|
Blower Type |
4-speed centrifugal type |
|
|
No. of Blower |
4 pcs |
|
|
Current |
36A |
|
|
Condenser |
Type |
Aluminum foil with internal ridge copper tube |
|
Air Flow |
5,700 m3/h |
|
|
Fan Type |
Axial type |
|
|
No. of Fan |
3 pcs |
|
|
Current |
27A |
|
|
Total Current |
< 75A |
|
|
Application |
8-9meter City Bus or 8-10 meter Coach |
|

|
Model |
BD-05 |
|
|
Cooling Capacity |
32.6 KW / 28,000 Kcal/h / 111,000 BTU |
|
|
Heating Capacity |
Optional |
|
|
Fresh Air |
1500 m3/h |
|
|
Refrigerant |
R134a/10 kg |
|
|
Compressor |
Model |
Bitzer F600 |
|
Displacement |
582 cc |
|
|
Weight |
27 kg |
|
|
Oil Type |
BSE55 |
|
|
Evaporator |
Type |
Hydrophilic aluminum foil with internal ridge copper tube |
|
Air Flow |
6,000 m3/h |
|
|
Blower Type |
4-speed centrifugal type |
|
|
No. of Blower |
6 pcs |
|
|
Current |
48A |
|
|
Condenser |
Type |
Aluminum foil with internal ridge copper tube |
|
Air Flow |
7,600 m3/h |
|
|
Fan Type |
Axial type |
|
|
No. of Fan |
4 pcs |
|
|
Current |
32A |
|
|
Total Current |
< 85A |
|
|
Application |
9-11 meter City Bus or 10-12meter Coach |
|

|
Model |
BD -06 |
|
|
Cooling Capacity |
37.2 KW / 32,000 Kcal/h / 127,000 BTU |
|
|
Heating Capacity |
Optional |
|
|
Fresh Air |
1750 m3/h |
|
|
Refrigerant |
R134a/13.5 kg |
|
|
Maximum Ambient Temp. |
50℃ |
|
|
Compressor |
Model |
BOCK FKX40/655K |
|
Displacement |
650 cc |
|
|
Weight |
31 kg |
|
|
Oil Type |
FUCHS Reniso Triton SE55 |
|
|
Evaporator |
Type |
Hydrophilic aluminum foil with internal ridge copper tube |
|
Air Flow |
7,000 m3/h |
|
|
Blower Type |
4-speed centrifugal type |
|
|
No. of Blower |
8 pcs |
|
|
Current |
48A |
|
|
Condenser |
Type |
Aluminum foil with internal ridge copper tube |
|
Air Flow |
9,500 m3/h |
|
|
Fan Type |
Axial type |
|
|
No. of Fan |
5 pcs |
|
|
Current |
40A |
|
|
Total Current |
< 95A |
|
|
Weight of Rooftop Unit |
|
|
|
Application |
10-12 meter City Bus or 11-13 meter Coach |
|
