Create a Comfortable Classroom Environment

AirCraft Air Handling are a leading British Manufacturer of Air Handling Units providing quality products and cost effective solutions.

Established in the 1990’s, AirCraft have designed and manufactured bespoke and versatile units that have provided quality service in varied environments including Education, Offices, Shopping Centres, Laboratories and Hotels. AirCraft products have created comfortable environments all over the UK, Europe and the Middle East.

Compact Designs

Cost Effective Solutions

Individually Customised

Quiet Operation

Classroom Ventilation Units

Due to our policy of continuous product development, we reserve the right to change the specification without notice. Optional extras may occur a charge. The specifications shown in this literature are for guidance only.

CASINGUnit frame work shall be 30mm aluminium section with cast corner pieces, AirCraft Air Handling Classroom Ventilation Units use 2mm thick aluminium for the profile sections.

Panels shall be flush into the framework providing a smooth outer and inner finish. Panels shall be of double skinned construction tray form comprising of the following:-

25mm thick and manufactured using 0.7mm plastisol outer skin and 1.0mm galvanised inner skin.

25mm thick insulation with thermal conductivity of 0.04 w/m3 between skins.

Access panels shall be of hinged design and shall seat into compression rubber seals.

Lockable handles shall be fitted to all access doors.

Inner skin acoustically treated.

FAN SECTIONFans shall be double inlet double width with forward curved impellor. Fan wheels shall be statically and dynamically balanced and mounted on a solid steel shaft turning in sealed for life bearings.

Drive motors shall be of the TEFC type with class F insulation wound for 415 v 3 phase 50Hz electrical supply. Motors shall be mounted on slide rails for Vee belt tensioning.

Drives shall be by means of Vee belt drive and taper lock pulleys.

Fan assembly shall be isolated from unit casing with anti vibration mounts and a flexible connection.

Inverters / speed controllers supplied as “free issue” items for fixing / wiring by others.

FILTER SECTIONFilters shall be mounted in a galvanised steel frame for side withdrawal. The panel filters shall be G4. Bag filters shall be F7.

Manometers are fitted to all filters. Model ref AHC 600 operating range 0-600 pa. Operating limits maximum pressure 200 kpa temperature limits -40 /+60 0C. Accuracy 5 pa (inclined scale) 20 pa (vertical scale). Gauge fluid ISO-paraffin, s.g. 0.786 kg/dm3 (150C).

Note – structure of gauge prevents the gauge fluid escaping from the meter.

DAMPER SECTIONWhere stated, the units shall have a fresh air intake and return dampers. Damper to have edge seals fitted to blades and suitable for motorized operation.

Damper torque = 4 Nm per 1m2 of damper face area.

HEATING COILSHeating coils shall be suitable for operation with LPHW. All colis shall be constructed from seamless copper tubes expanded into aluminium fins.

The coil block shall be housed in a galvanised steel casing suitable for “slide in” application. Connections to be steel BSP screwed.

A 10% margin in capacity shall be included in all coil selections.

All coils shall be tested to 30 kg.cm2 air under water and copies of test certificates provided.

Coil face velocity not to exceed 2.5 m3/s.

RECUPERATORRecuperator to be of aluminium plate type and shall be of a minimum efficiency of 50%

Aluminium exchange plates contained within an extra strong galvanised steel casing. Exchange block is mechanically sealed. Face and bypass damper fitted to the supply side. Condensate drain tray fitted.

AirCraft Air Handling LtdMoorfields Industrial Estate

Cotes HeathStafford ST21 6QY

Tel: 01782 791 545Fax: 01782 791 283

info@aircraftairhandling.co.uk

www.aircraftairhandling.co.uk

SAMPLE SPECIFICATION

Air Volumes  0.21cum/sec ‐ 0.66cum/sec (Maximum Boosted Air Volumes)

                        0.16cum/sec ‐ 0.44cum/sec (Normal Operating Air Volumes)

Unit Size          4/10          4/8          4/6

Unit Dims 2.4m l x 2.0m w x 0.38mm deep   2.4m l x 1.6m w x 0.38mm deep   2.4m l x 1.2m w x 0.38mm deep  

Configuration Horizontal Side x Side Horizontal Side x Side Horizontal Side x Side

Construction: 30mm thick Double Skinned c/w 65kg Rockwool in‐fill

Air Volume Supply Extract Supply Extract Supply Extract

Max Boost Volume 0.66 cum/sec 0.66 cum/sec 0.36 cum/sec 0.36 cum/sec 0.21 cum/sec 0.21 cum/sec

Normal Vol @ 2/3rd Speed 0.44 cum/sec 0.44 cum/sec 0.24 cum/sec 0.24 cum/sec 0.16 cum/sec 0.16 cum/sec

Dampers (suitable for actuation) Fitted Fitted Fitted Fitted Fitted Fitted

Primary Filter G5 Panel G5 Panel G5 Panel

Secondary Filter F7 Bag F7 Bag F7 Bag

Return Air Filter G5 Panel G5 Panel G5 Panel

Plate Recuperator Fitted Fitted Fitted

Data based on Face & Bypass Damper Fitted Fitted Fitted

Normal Volume Supply Air "On" (degC)           ‐4degC          ‐4degC          ‐4degC

2/3 speed Supply Air "Off" (degC) 9.1degC         9.0degC 9.9degC

Extract Air "On" (degC) 22.0degC 22.0degC 22.0degC

Extract Air "Off" (degC) 11.1degC 11.3degC 10.7degC

Temp Efficiency 50.30% 50.20% 53.30%

Capacity (kW) 6.94kW 3.77kW 2.67kW

Heater Battery Fitted Fitted Fitted

Data based on Coil Velocity (m/sec) 2.3m/sec 1.7m/sec 1.6m/sec

Normal Volume  "On Coil" Temp (degC)          ‐4degC          ‐4degC          ‐4degC

2/3 speed "Off Coil Temp" (degC)          28degC          28degC          28degC

Htg Medium LPHW LPHW LPHW

Medium F&R Temps (degC)     82/71degC     82/71degC     82/71degC

Coil Duty/Size (kW) 16.9kW          9.44kW 6.29kW

Fan Details Supply Extract Supply Extract Supply Extract

Data based on Air Volume (cum/sec) 0.44 0.44 0.24 0.24 0.16 0.16

Normal Volume External Static (Pa) 150 150 150 150 150 150

2/3 speed Fan Static (Pa) 692 586 453 341 408 294

Absorbed kW 0.877kW 0.725kW 0.274kW 0.203kW

Motor Size (kW) 1.5kW 1.5kW 1.1kW 0.55kW 279watts 279watts

Start Current (x) x5.3 x5.3 x4.7 x4.3

Run Current (FLC) 3.4 3.4 2.7 1.45 1.3 1.3

Elec Supply 415v 415v 415v 415v 240v 240v

In Duct Noise Levels  dBA dBA dBA dBA dBA dBA

63 80 77 70 67 68 67

125 85 85 78 75 77 72

250 84 80 72 66 71 65

500 79 76 70 66 69 65

                                       1K 77 75 70 68 69 66

                                       2K 78 76 69 66 68 64

                                       4K 74 72 66 64 64 61

                                       8K 71 69 62 59 60 57

Fan Type F/C  F/C F/C F/C F/C F/C

Fan Speed (rpm) 2979 2750 2312 2007 1945 1945

Outlet Velocity (m/s) 5.2m/s 5.2m/s 5.7m/s 5.7m/s 7.8m/s 7.8m/s

Speed Controllers/Inverters Inverter Inverter Inverter Inverter Speed Cntrl Speed Cntrl

Inner Skin Acoustically Treated Yes Yes Yes Yes Yes Yes

Access Units c/w side/bottom sealed access panels/doors

Available Optional Variations: Electrical Heaters  DX Cooling Coils Chilled Water Coils

AirCraft Air Handling Ltd. Tel: 01782 791 545. Fax: 01782 791 283. Email: info@aircraftairhandling.co.uk. Www.aircraftairhandling.co.uk