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Modular Coach Rooftop HVAC (Model A)


20KW COACH ROOFTOP HVAC (HEATING VENTILATION & AIR-CONDITIONING) UNIT FOR PASSENGER/SLEEPER COACHES

Ref no. COACH ROOFTOP HVAC

Roof mounted modular air conditioning system (HVAC) to supply 20kW cooling and 7kW of heating, to ensure a cabin temperature of 20 – 25°C max in a 45°C ambient, provided the coach is thermally insulated. The HVAC system is a double evaporator design with dual compressors (8kW & 12kW) for redundancy and capacity control. The system is available with reverse cycle heating, where the 8kW circuit is reversed to produce 9kW of heating.

The HVAC system does not restrict the standard operational features of any coach type and stays within the standard gauge set. The HVAC unit is protected with a sheet metal cover which matches the style and colour of the coach. For best results, 2 x rooftop HVAC units must be installed per coach (one on each end). The rooftop HVAC system is qualified for shock and vibration according to BS EN 61373.

All electrical components and switchgear are housed in the control panel installed in the electrical control room of the coach, and no electrical parts are housed in the rooftop unit. This means that faults can be determined without needing access to rooftop HVAC unit. All faults and trips can easily be address from the control box, without needing access to the rooftop HVAC unit.

All electrical connections, looms and the electronic control panel as well as electrical control gear are designed and selected for operation in railway environments, which include adverse temperatures as well as severe shock and vibration.

The HVAC unit is equipped with custom designed electronic controllers, capable of all control and safety functions. The touch screen controller activates subsystems as required to regulate the cabin temperature to the desired setting on the control panel (HMI). The system has a Bluetooth login interface for remote monitoring via a smartphone app and/or laptop. Installation of the unit requires substantial modifications, and it’s suggested that the system is designed with the correct interfaces in place.

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Specifications

1

Modular

Fully Self contained with only Electrical Power Connection & Installation Interfaces.

2

Adverse Conditions

Design & Built to still give 100% Performance in extreme ambients of -10°C to 55°C.

3

Special Filtration

Primary self cleaning cyclone filters to remove 95% + of dust, secondary media, HEPA as option, UVC as option.

4

Low Noise

Automatic Fan speed control, cladded air channels & ducts.

5

Smart Control

On Board Intelligence and Data Logging. System safe running modes to eliminate immediate system shut down.

6

Slim Design

Designed to blend with Vehicle Ergonomics and Esthetic Design.

7

Rugged & Reliable

Solid construction for rough terrains and potential mechanical damage.

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Specifications

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Ref no. COACH ROOFTOP HVAC

Cooling Capacity  

20kW @ 45°C Ambient (40kW per coach)

Maximum Ambient

45°C

Minimum Ambient

3°C

System Power Input

400VAC; 19A

Refrigerant

R407C

Aircon Air Flow Rate

> 2000m3/h

Fresh Air Supply

600m3/h

Primary Filter

Pleated Media Filter

Fault Finding

Bluetooth & HMI

Network

CAN Bus

Dimensions

2005mm L x 2059mm W x 425mm H

Weight  

450kg

Compressor

Hitachi Horizontal Scroll  

OPTIONAL EXTRAS

Heating Capacity

4.5kW electric heating per unit, 9kW per coach

Data Logging

Data Logging through LoRa (long range communication) onto Remote Server

Water Chiller

10L Water Chiller Integrated to Unit 

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