Rooftop Air Handling Unit

Amrta HVAC Rooftop Packaged Unit With Hot Water Coil is convertible single package high efficiency rooftops. All models have independent refrigeration circuits for efficient part load operation. Although the units are primarily designed for curb mounting on a roof, they can also be slab-mounted at ground level or set on steel beams above a finished roof. Every Air Conditioner unit is completely charged, wired, piped, and tested at the factory to provide a quick and easy field installation. All models ( including those with an economizer ) are convertible between bottom and horizontal duct connections. Electric heater are available as factory - installed options only. 

● Industrial buildings and logistic centers

● Wide choice of communication interfaces

Heating Possibilities
Electric heater

The electric heater comprises of shielded resistance heaters, which are smooth stainless steel tubes 6 W/cm2 capacity. High temperature limit control offers overload protection and is set to 90°C and located at less than 150mm after electric heaters. This is provided as a standard feature on the electric heater, with the electric power supply cables made of reticulated silicon rubber, resistant to temperatures up to 200°C. For any rooftop unit size, three sizes of electric heater are 
available, S (standard), M (Medium) and H (high).
Hot water coil
Hot water coils offer fully modulating control through the use of a 3 way valve. The hot water coil, connections and valves are all tested at pressure of 15 bars. 
Frost protection is provided by forcing the opening the 3 way valve when supply temperature from hot water coil falls below 8°C and by stopping the outdoor fan when that supply temperature falls below 6°C. In addition to that, the 3 way valve is also opened at 10% value if the outdoor temperature falls below an adjustable value.
Hot water coils are always factory fitted, wired and fully tested, prior to shipment.

Rooftop Packaged Unit Technical Data

* Performance values refer to the following conditions:
Cooling: room air temperature 27.0°C DB RH 50%, ambient air temperature 35°C;
Heating: room air temperature 20.0°C DB, ambient air temperature 7°C DB / 6°C WB.
** Noise level measured by adopting average value in the noise lab with background noise of 25 dB(A), at a distance of 1.5m high fan speed.

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