Economy Air Conditioner for Bus, Coach, School Bus and Articulated Bus

Short Description:

SZQ series is a kind of split roof top unit of air conditioner for 8.5m to 12.9m from economy conventional bus, coach, school bus or articulated bus. The series with high temperature version is available. The cooling capacity of the series bus air conditioner ranges from 20kW to 40kW, (62840 to 136480 Btu/h or 17200 to 34400 Kcal/h). As for air conditioner for minibus or bus less than 8.5m, please refer to SZG series.

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Product Details

Product Tags

Air Conditioner for Bus, Coach, school Bus and Articulated Bus

SZQ Series, Economy, A/C for 9 to 12.9 m bus, parallel flow aluminum fin condenser

As for air conditioner for minibus or bus less than 8.5m, please refer to SZG series. Or you can contact with us at [email protected] for more details.

Technical Specification of Bus A/C SZQ Series:

Model:		SZQ-II-D	SZQ-Ⅲ-D	SZQ-Ⅲ /F-D	SZQ-Ⅳ-D
Cooling Capacity	Standard	20 kW or 68240 Btu/h	24 kW or 81888 Btu/h	26 kW or 88712 Btu/h	28 kW or 95536 Btu/h
(Evaporator Room 40°C/ 45%RH / Condenser Room 30°C)	Maximum	22 kW or 75064 Btu/h	26 kW or 88712 Btu/h	28 kW or 95536 Btu/h	30 kW or 102360 Btu/h
Recommended Bus Length（Applicable to China's climate ）		7.5 ~ 7.9 m	8.5 ~ 8.9 m	9.0~ 9.4 m	9.5~ 9.9 m
Compressor	Model	F400	4TFCY	4PFCY	4PFCY
	Displacement	400 cc/r	475 cc/r	558 cc/r	558 cc/r
	Weight (with Clutch)	23kg	33.7kg	33kg	33kg
	Lubricant Type	BSE55	BSE55	BSE55	BSE55
Expansion Valve		Danfoss	Danfoss	Danfoss	Danfoss
Air Flow Volume(Zero Pressure)	Condenser (Fan Quantity)	6000 m3/h (3)	6000 m3/h (3)	6300 m3/h (3)	8400 m3/h (4)
Air Flow Volume(Zero Pressure)	Evaporator (Blower Quantity)	3600 m3 /h (4)	3600 m3 /h (4)	5400 m3 /h (6)	5400 m3 /h (6)
Roof Unit	Dimension	3430x1860x188(mm)	3430x1860x188(mm)	3680×1860×188(mm)	3880×1860×188(mm)
Roof Unit	Weight	145 kg	152 kg	167 kg	175 kg
Power Consumption		56 A (24V)	56 A (24V)	75.5 A (24V)	76 A (24V)
Refrigerant	Type	R134a	R134a	R134a	R134a
Refrigerant	Weigh	4.7 kg	4.7 kg	4 kg	4.6 kg

Model:		SZQ-Ⅳ/F-D	SZQ-V/F-D	SZQ-Ⅵ-D	SZQ-Ⅵ /F-D
Cooling Capacity	Standard	30 kW or 102360 Btu/h	33 kW or 112596 Btu/h	35 kW or 119420 Btu/h	37 kW or 126244 Btu/h
(Evaporator Room 40°C/ 45%RH / Condenser Room 30°C)	Maximum	33 kW or 112596 Btu/h	36 kW or 122832 Btu/h	38 kW or 129656 Btu/h	40 kW or 136480 Btu/h
Recommended Bus Length（Applicable to China's climate ）		10.0~ 10.4 m	11.0~ 11.4 m	11.5 ~11.9 m	12.0~ 12.9 m
Compressor	Model	4NFCY	4NFCY	4NFCY	4GFCY
	Displacement	650 cc/r	650 cc/r	650 cc/r	750 cc/r
	Weight (with Clutch)	32kg	32kg	32kg	34kg
	Lubricant Type	BSE55	BSE55	BSE55	BSE55
Expansion Valve		Danfoss	Danfoss	Danfoss	Danfoss
Air Flow Volume(Zero Pressure)	Condenser (Fan Quantity)	8400 m3/h (4)	8400 m3/h (4)	10500 m3/h (5)	10500 m3/h (5)
Air Flow Volume(Zero Pressure)	Evaporator (Blower Quantity)	5400 m3 /h (6)	7200 m3 /h (8)	7200 m3 /h (8)	7200 m3 /h (8)
Roof Unit	Dimension	3880×1860×188(mm)	4480×1860×188(mm)	4480x1860x188(mm)	4480×1860×188(mm)
Roof Unit	Weight	177 kg	195 kg	228 kg	203 kg
Power Consumption		76 A (24V)	92.5 A (24V)	98A (24V)	100 A (24V)
Refrigerant	Type	R134a	R134a	R134a	R134a
Refrigerant	Weigh	5.0 kg	5.5 kg	10 kg	6 kg

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SZQ-Ⅲ-D Technical Information	SZQ-ⅢF-D Technical Information	SZQ-Ⅳ-D Technical Information
SZQ-ⅣF-D Technical Information	SZQ-Ⅵ-D Technical Information	SZQ-ⅥF-D Technical Information
SZQ-V-D Technical Information	SZQ-VF-D Technical Information

Technical Note:

1. The whole system include the roof unit, air return grille, compressor, and the installation accessories, not include compressor bracket, belts, refrigerant.

2. The refrigerant is R134a.

3. The heating function is optional.

4. Compressor BOCK, VALEO or AOKE is optional.

5. The fan & blower as option like brush or brushless.

6. Please contact us at [email protected] for more options and details.

Detailed Technical Introduction of the SZQ Series Bus Air Conditioner

1. Beautiful Appearance

SZQ series air conditioner adopts thin design, the thickness of the air conditioner is 188mm, which is lower than the thickness of the current conventional air conditioner, which meets the requirements of the bus for the height control of the air conditioner. In addition, the appearance of the air conditioner is designed to be streamlined, which is in line with modern aesthetics and has a beautiful and fashionable appearance.

2. Lightweight design

The condenser uses a parallel flow core. The condenser base is designed as an inverted V-shaped frame without bottom shell structure. The evaporator assembly air duct adopts an innovative bottom shell integrated bending structure. Through the above methods, the weight of the air conditioner is greatly reduced.

Integrated Bending Air Duct

Parallel flow core and V-frame without bottom shell structure

3. Efficient heat transfer

In the design of the flow path of the parallel flow condenser, the high temperature area of the internal refrigerant corresponds to the area of the condenser's frontal wind speed. The heat resistance of the high temperature difference and the reasonable design of the process length are used to reduce the flow resistance. thereby increasing the heat of the condenser and exchange ability so as to maximize the efficiency of parallel flow heat exchangers.

4. Environmental protection

Compared with traditional tube-fin condensers, the SZQ series uses optimized parallel flow cores and optimization of air conditioning system piping. These helps to reduce the refrigerant charge by 40%. Thereby reducing the impact of refrigerant leakage on the environment.

Inverted V-shaped Frame

The SZQ Series Bus AC Functions Upgrade （Optional）

1. Defroster and Air conditioning in Driver's cabin

The defroster, and AC in driver's cabin can be installed according to customer's requirement, to provide a comfortable environment for the driver.

2. Integrated central control technology

The integration of the control panel and the vehicle instrumentation is convenient for the centralized layout of vehicle control. The remote control function of product control is added to facilitate customer operation management.

3. Plumbing and heating technology

The water heating pipe can be led out from the core of the evaporator to realize the heating function of the air conditioner and meet the requirements of the ambient temperature in the bus in the cold area.

4. Air purification technology

It includes mainly four functions: electrostatic dust collection, ultraviolet light, strong ion generator, and photocatalyst filtration, which can achieve full-time, uninterrupted anti-virus and sterilization, odor removal and efficient dust removal, effectively blocking the virus transmission path.

5. Remote control diagnosis technology

"Cloud control" function, realize remote control and diagnosis, and improve product service and monitoring capabilities through big data application.

6. Energy Regulation Technology

According to the temperature in the bus and the environment, the flow of the fan and compressor is adjusted in multiple stages to reduce the frequent start and stop of the compressor, improve the overall comfort of the passengers, and ensure that the system operates more efficiently.

The Application of the SZR Series Bus AC:

With the development of the market and the improvement of living standards, bus has gradually increased from traditional simple means of transportation to paying more attention to the improvement of comfort and transportation environment. Therefore, high-end passengers have been increasing year by year in recent years. SZR focuses on the appearance and is suitable for high- and mid-range buses. The market outlook is good.

1. The wide range of application

The bottom arc of the SZR series is suitable for roof arcs with a radius of 6~72 meters, the unit width is 1860mm, and the air outlet is directly fed into the air ducts on both sides of the bus, which is easy to install. The product series has 8 models from small to large, and the cooling capacity is 20~ 40KW, suitable for 8~13 meters buses.

5. Energy Regulation Technology