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NTN Air handling unit
AND COOLING



to 17,1

to 9,3

to 1.350
Description
The structure consists of a girder-built underframe made of anticorodal extruded aluminium section bars that are linked by means of Nylon joints. The cabinet consists of multi-layer, painted steel panels. The engine-ventilator group is isolated from the rest of the structure by means of suitable buffers on the basement and a Neoprene anti-vibrating joint between the air inlet and the panels. The dual-intake centrifugal fans featuring forward-oriented fins are balanced both statically and dynamically. The 95, 130 and 175 versions are equipped with twin ventilators. The engine-ventilator group features variable pitch pulleys and V-belts for all versions. The 4-pole electric engines are ventilated outside and isolated according to F-class standards, with IP55 protection mounted on dedicated guides allowing to regulate belt tension. The place to install batteries can host both heating and/or cooling batteries and has been designed to be equipped with two batteries – oriented either horizontally or vertically. All batteries feature copper piping and aluminium fins: devices working with hot water have 2 or 4 ranks, while devices working with chilled water have 4 or 6 ranks. The filtering section is equipped with multiply synthetic cell filters with 85% ponderal filtering efficiency. The NTN units are also available with centrifugal fan whose engine is directly coupled to the fan wheel (NTN/D version).
Dimensions
Model | Overall dimensions mm | Weight Kg* | |||||
---|---|---|---|---|---|---|---|
A | B | C/H | C/V | M | / H | / V | |
NTN 30 | 1.180 | 770 | 1.290 | 1.540 | 80 | 197 | 220 |
NTN 53 | 1.420 | 770 | 1.290 | 1.540 | 80 | 240 | 268 |
NTN 72 | 1.660 | 770 | 1.290 | 1.540 | 80 | 260 | 290 |
NTN 95 | 1.780 | 920 | 1.290 | 1.830 | 80 | 360 | 380 |
NTN 130 | 1.940 | 1.100 | 1.290 | 2.010 | 80 | 380 | 410 |
NTN 175 | 2.300 | 1.100 | 1.290 | 2.090 | 80 | 580 | 550 |
(*) Indicative weight in standard configuration (included optional 4-ranks battery mounted).
Technical features
Model | U.M. | NTN 30 | NTN 53 | NTN 72 | NTN 95 | NTN 130 | NTN 175 |
---|---|---|---|---|---|---|---|
Nominal air flow rate | Nm3/h | 3.000 | 5.300 | 7.200 | 9.600 | 13.000 | 17.500 |
Air flow rate (MIN – MAX) | Nm3/h | 2.200-3.800 | 3.900-6.700 | 6.300-8.100 | 8.200-11.000 | 11.000-15.000 | 15.000-20.000 |
Static pressure* | Pa | 250-430 | 370-550 | 270-570 | 300-430 | 300-570 | 350-570 |
Fan type | CENTRIFUGO | ||||||
N° speed | n° | 1 | 1 | 1 | 1 | 1 | 1 |
Motor power | kW | 0,75 | 1,5 | 2,2 | 2,2 | 4,0 | 5,5 |
Electrical supply | V - 50Hz | 400 3N ~ | 400 3N ~ | 400 3N ~ | 400 3N ~ | 400 3N ~ | 400 3N ~ |
Warm water 4-rows battery | |||||||
Heating capacity(1) | kW | 50.8 | 79.4 | 105 | 142 | 193 | 252 |
Water flow rate | m3/h | 4.47 | 6.99 | 9.27 | 12.47 | 16.95 | 22.13 |
Water pressure drop | kPa | 13.2 | 5.5 | 11 | 15.1 | 19 | 5.9 |
Cooled water 6-rows battery | |||||||
Total cooling capacity(2) | kW | 35.6 | 55.6 | 75 | 98.9 | 139 | 170 |
Sensible cooling capacity(2) | kW | 19.22 | 30.58 | 41.25 | 54.4 | 76.45 | 95.2 |
Water flow rate | m3/h | 6.09 | 9.53 | 12.85 | 16.95 | 23.77 | 29.11 |
Water pressure drop | kPa | 17.5 | 11.9 | 24.6 | 17.6 | 43.2 | 6.5 |
*Refers to the fan with standard motor: to obtain the effective static pressures it is necessary to subtract the load losses of the installed components/accessories.
(1) Heating: incoming air temperature 0°C ( dry bulb ). - Incoming/outgoing Water temperature 70/60°C – Data referred to the nominal air flow.
(2) Cooling: incoming air temperature 32°C ( dry bulb ), relative humidity 50% - Incoming/outgoing Water temperature 7/12°C – Data referred to the nominal air flow.
Original accessories
- 2-or 4 rows post-heating coil
- 2-way water valve kit with on-off actuator
- 3-way water valve kit with modulating actuator
- Electric post-heating section
- High efficiency filters
- Front grille
- Front damper
- Closed plenum
- Outlet plenum with louvre
- Plenum with one damper
- Plenum with two dampers
- Damper actuators
- Air filter pressure switch
- Duct silencer
- Oversized power motor
- Unit control board
- Inverter


