td l s ahtw compact r e d heat recovery air handling …

1262

Acoustic Testing LaboratoryCollege of Science & Technology

AHTW CompactHeat Recovery Air Handling Unit

BIM & REVIT Engineering Solutions

AIR

HA

ND

LER

S LT

D

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

2

The Company…Air Handlers has been trading since May 1989,and has just celebrated 25 years in business in2014. The Company operates from its 60,000 SqFt Factory in Salford Quays which was purposebuilt in year 2000.

Product Development...The Company is continually updating its productsto comply with changing energy savingtechnologies, so the introduction of the AHTWCompact Range of air handling units is based onchanges in specific fan power and heat recoverylegislation adopting higher energy savingtechnology.

Compliance...The AHTW air handling units comply with BS EN1886 Class L2 Construction Standards. Airhandling unit construction and ErP EuropeanDirective January 2018 for energy recoveryefficiencies.

Acoustic Performance...Extensive acoustic testing of caseworkconstruction has been carried out at both thecompanies testing facilities, and SalfordUniversity Acoustic Testing Laboratory. Acoustictests were carried out on eleven doubleskin, composite panel/frame systems,eight different triple and quadruple skincomposite panel/frame systems, to BS.EN ISO10140-2 (2010) which have allbeen certified as UKAS accredited.

1262


AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

3

Location…AHTW Compact Package Heat Reclaim Air HandlingUnits are normally located internally inplantrooms, external to the building or on the roof.

Construction… FrameInsulated extruded anodised aluminium pentapostsections with solid die cast mechanical fit cornersare used to build each frame. The frame isacoustically insulated to prevent noise leakage.

PanelsPanels are flush fitted into the frame and air sealedwith neoprene gaskets. A range of acousticallyinsulated panels are available to meet the soundreduction required in the space.

Access PanelsAll access panels will be flush mounted in theframe, and constructed as the fixed panels. Fan andcontrol panel access panels will be lockable. Quickrelease, other access panels will have multidirectional handles.

Heat RecoveryThe energy recovery device used on the AHTWCompact is a variable speed rotary thermal wheelwith a minimum efficiency of 73% in accordancewith the January 2018 European DirectivePerformance Eurovent Certified.

Filters

Filters are fitted to both the fresh air and return airinlets. G4 grade panel filters are used as standard.

Disposable multi pocket bag filters can be offeredas an alternative or secondary filter with grades F5,F6, F7 available. Manometers or pressuredifferential guages factory fitted are available as anoption.

Heating Coil

Low temperature hot water heating coils arecontained within the casework on slide rails for theease of removal. Coils are constructed as standardfrom copper tubes and headers with aluminium fins.

Optional coil construction: • Bare tube (frost coils)

• Wide spaced fins (frost coils)

• Polyester coated fins.

• Blygold coated fins.

• Copper fins.

• HTM – 03 compliant coils.

Cooling Coil Options

Cooling coil options are available to offer mechanicalcooling, direct expansion or chilled water coilsconstructed from copper tubes and headers withaluminium fins as standard.

Optional coil construction: • Polyester coated aluminium fins.

• Blygold coated fins.

• Copper fins.

• Copper fins electro tinned.

• HTM -03 Compliant.

Drain trays are fitted to cooling coils and can befixed or removable, all drain trays have a inbuiltslope.

Bag Filters

Thermal Wheel

Electric Heaters

Manufactured with sheathed elements, and fittedwith a high temperature cut out. Balanced phaseelements are arranged for thyristor or step control.

Cooling Coil

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

4

Fans

AHTW Compact air handling units have supply andreturn air backward curved centrifugal plug typefans, direct driven by high efficiency EC motors.

This method of scroll free fan produces an optimallow loss flow of air through the impeller so thereare no longer any drastic cross sectional changes.

Fan Inlet Flow grids… By fitting an inlet flow grid to the supply fan it ispossible to achieve significant noise reductionfrom the fan.

The noise reduction is predominantly lowfrequency decay (i.e. 63Hz, 125Hz, 250Hz), whichcan help offer significant sound power loss. Thissound power loss is created by the reduction inturbulence hitting the rotating blades, with tonalfrequency components, known as impellor noise ortonal noise.

Tonal noise consists of the blade – passing noiseand its harmonics. The frequency of the blade –passing noise can be calculated as the sum of thefan speed and the number of blades.

A flow-grid fitted to the inlet of the fans willsignificantly reduce the low frequency noisegenerated disturbance. The vortex is split whenimpacting the grille as it is considerably weakenedwhen it flows through the flowgrid.

Sound pressure is reduced, particularly the lowfrequency. The chart below indicates the powerloss in octave bands.

Freq Hz 63 125 250 500 1K

Powerloss db -6 -10 -7.5 -8 -1

Flowgrids

Dampers

All dampers are constructed from an aerofoilsection double skin aluminium blade profile withedge, blade and side seals to offer low leakage.

The blade rotation is performed by rigid nylon cogswhich operate out of Air Stream. The damperoperating mechanism is connected to an optionalfactory fitted and pre-wired actuator via a squarebrass drive shaft.

Thermal Insulated Dampers

Thermally insulated blades can be provided forfresh air and exhaust air shut off dampers whichadd protection to filters and coil freezing.

Electric Heater

Thermal Insulated Dampers

Fans

Motors operate via a 0-10V DC output from themotor, it provides infinitely variable speed control.

Backward curved scroll free fans are quiet runningwith optimised airflow through the impeller, givingsignificantly reduced tonal noise.

Multi fan wall arrangements are used to achievehigher air flow performance and efficiency.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

5

Baseframes… Formed 2.5mm galvanised steel baseframes arefitted to all AHTW Compact air handling units, astandard height of 100mm is included, butoptional increased height baseframes are availableon request.

In the case of HTM - 03 and healthcare projects,the baseframe will be as laid down in thespecifications.

All baseframes incorporate lifting points in builtinto the baseframe and designed to suit thespecific lifting weight of the air handling unit.

Lifting instructions and method statement forsecuring lifting equipment are issued with OEMinformation on delivery.

Controls… AHTW Compact air handling units can be suppliedwith an optional in built controls package withweatherproof options.

Standard Control Package

This option includes for the control panel to bebuilt into the air handling unit casework ormounted directly onto it.

All internal components will be pre-wired withisolators, actuators, sensors, thermostats, pressureswitches all factory fitted.

The control system will incorporate a controllerwhich contains features to act independent orwith BMS. Modbus or BACnet facility. Displayfeatures can be provided on the controller.

The control package includes speed controllersbuilt into the controller to speed regulate the E Cfans.

Control system options: • Trend, Carel or similar controller.

• Output facility to operate remote condensingunit(s) or heat pump unit(s).

• Output to operate a thyristor controller(additional) for electric heater 0 < 10 Volttemperature regulation.

Internal Control PanelExternal Weatherproof

Control Panel

Casework Class… AHTW Compact air handling units have varioustypes of casework available as detailed below.

Standard Casework

Standard Casework is constructed from a 30mmanodised aluminium framework with 25mmdouble skin insulated panels.

Standard Casework Panel Options

30/25FG

OPTION 1 30/25FG0.9mm inner skin galvanised sheet metal1.2 mm outer skin galvanised sheet metal

OPTION 2 30/25FG1.2mm inner skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel

Sound Reduction Index

Frequency Hz 63 125 250 500 1K 2K 4K 8K

Power Loss db 16.5 16.6 26.6 38.1 39.2 33.4 32.1 39.7

50/50FG

OPTION 1 50/50FG0.9mm inner skin galvanised sheet metal1.2 mm outer skin galvanised sheet metal

OPTION 2 50/50FG1.2mm inner skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 15.7 18.4 33.7 36.2 37.5 32.4 35 40.4

Sound Reduction Index 50/50 PB (Double Skin)


Power Loss db 20 23.5 29.4 36 39 34 34.5 41

Acoustic Enhanced Casework

Various acoustically enhanced panels are availablewith different thickness and acoustic insulationcomposites, frames are constructed from anodisedaluminium and acoustically insulated to preventsound leakage.

All acoustic panel options are listed below withtheir sound reduction index.

30/25AS

OPTION 1 30/25AS30mm anodised aluminium acoustic insulatedframe with 25mm double skin sound barrierinsulated panels.

Inner Skin0.9mm inner skin galvanised sheet metal

Outer skin1.2mm outer skin galvanised sheet metal

OPTION 2 30/25AS1.2mm inner skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

6

30/25PB

OPTION 1 30/25PB30mm anodised aluminium acoustic insulatedframe with 25mm double skin sound barrierinsulated panels.



OPTION 2 30/25PB1.2mm inner skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 20.4 23 23 23.3 33.6 37 37.7 45.5

50/50FG PBOPTION 1 50/50FG PB50mm anodised aluminium acoustic insulatedframe with 50mm double skin acoustic compositeinsulated panels.



OPTION 2 50/50FG PB1.2mm inner skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 19.6 18.3 33.3 40 38.6 36.1 39.3 46.8

30/25TS PB (Triple Skin)OPTION 1 30/25TS PB30mm anodised aluminium acoustic insulatedframe with 25mm double skin sound barrierinsulated panels.


Intermediate skin0.9mm inner skin galvanised sheet metal


OPTION 2 30/25TS PB1.2mm inner skin galvanised sheet metal1.2mm intermediate skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 22.5 26.2 29.4 30 36.4 35.2 33.6 39.6

50/50FG TS PB (Triple Skin)OPTION 1 30/25FG TS PB50mm anodised aluminium acoustic insulated framewith 50mm triple skin acoustic composite panels.


Intermediate skin0.9mm inner skin galvanised sheet metal


OPTION 2 50/50FG TS PB1.2mm inner skin galvanised sheet metal1.2mm intermediate skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 21.1 21 36.3 39.2 41.7 34.7 32.9 40.2

50/50AS TS PB (Triple Skin)OPTION 1 50/50AS TS PB50mm anodised aluminium acoustic insulated framewith 50mm triple skin acoustic composite panels.


Intermediate skins0.9mm inner skin galvanised sheet metal


OPTION 2 50/50AS TS PB1.2mm inner skin galvanised sheet metal1.2mm intermediate skin galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 24.1 27.1 34.8 37 37.2 33.5 36.2 39.6

50/50AS QS PB (Quadrouple Skin)OPTION 1 50/50AS QS PB50mm anodised aluminium acoustic insulated framewith 50mm quadruple skin acoustic compositeinsulated panels.


Intermediate skin2 off 0.9mm intermediate skins galvanised sheet metal


OPTION 2 50/50AS QS PB1.2mm inner skin galvanised sheet metal2 off 1.2mm intermediate skins galvanised sheet metal0.7mm outer skin plastisol plastic coated steel



Power Loss db 24.1 36.6 34.7 39.8 40.7 37.8 39.7 43.7

7

Accreditation… In partnership with Salford University acoustictesting laboratory a range of composite acousticpanels have been designed and tested.To obtain the true casework noise breakout, theframe and panel assembly have to be tested with alarge enough area sample to give a truerepresentation of AHTW Compact casework.In practice the framework can leak sound whichwill flank the panels. Therefore the frame must beacoustically insulated to the same standard as thepanels.

Assembling test frame and panels

Test set up during testing programme

Certification…All acoustic SRI tests arecertified by Salford UniversityTest Laboratories to BS EN ISO10140-2(2010) – Report No’s1429 & 2060.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

8

Type 1Components available for selection with type 1 AHTW Compact Units:

• Inlet attenuators.

• Inlet/ exhaust dampers.

• Mixing box/recirculation section

• Rotary thermal wheel heat recovery device.

• Panel filters G3/G4 grade on supply and extract.

• Fan section containing E.C. backward curved plugfan(s).

• Discharge attenuators.

Type 2Components available for selection with type 2 AHTW Compact Units.


• Inlet/exhaust dampers.

• Mixing box/ recirculation section


• Panel filters G3/G4 grade on supply and extract.

• Electric heater battery.

• LPHW heating coil.

• Fan section containing EC backward curved plugfan(s).


Type… AHTW Compact air handling units are double stackedor side by side in configuration, and can containdifferent components which are described in theirindividual type and make up of components.The performance charts will relate to the type of AHTWCompact unit components make up, which allows forindividual components maximum pressure drops.

Type 3Components available for selection with type 3AHTW Compact Units


• Inlet dampers.

• Mixing box/ recirculation section.


• Panel filters G3/G4 grades on supply and extract.


• LPHW coil.


• Cooling coil chilled water or direct expansion heatpump coil available.


Type 4Components available for selection with type 4AHTW Compact Units


• Inlet dampers.

• Mixing box/ recirculation section.


• Panel filters G3/G4 grades on supply and extract.


• LPHW coil.


• Cooling coil chilled water or direct expansion heatpump coil available.

• Bag filters F5/F6/F7 grade.


Note

The casework class does not affect the performance value in the selection charts but will affect thedimensions of the unit and its acoustic breakout performance.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

9

External Pressure Pascals 50 100 150 200 250 300 350 400

Airflow (m³/Hr) 2200 2000 1800 1600 1400 1200 1000 700Inlet SWL (db) 72 70 70 69 69 68 70 69Outlet SWL (db) 78 75 76 75 74 75 75 74Absorbed power (Watts) 310 315 320 325 330 336 342 350

Airflow performance based on maximum speed @ 10 Volts.

Selection Chart MODEL AHTW 1000/T1/310-390/1F

Performance TYPICAL TYPE 1 COMPONENT CONFIGURATION

SIDE ELEVATION FRONT ELEVATION END ELEVATION

H

H1

H4

H5

H

H2

W2

W1

H6

H7

EXHAUST

AIR

FRESH

AIR

S

RETURN

AIR

SUPPLY

AIR

L1

H4

H5

H3

125

Air Flow Performance

Casework Class Weight (kg) H1 H2 H3 H4 H5 H6 H7 W1 W2 L1

30/25 FG 426 1210 1110 100 555 555 475 475 1110 1050 150030/25 AS 531 1210 1110 100 555 555 475 475 1110 1050 150030/25 PB 443 1210 1110 100 555 555 475 475 1110 1050 150030/25 TS PB 610 1210 1110 100 555 555 475 475 1110 1050 150050/50 FG 470 1250 1150 100 575 575 455 455 1150 1050 162050/50 FG PB 513 1250 1150 100 575 575 455 455 1150 1050 162050/50 FG TS PB 610 1250 1150 100 575 575 455 455 1150 1050 162050/50 AS TS PB 716 1250 1150 100 575 575 455 455 1150 1050 162050/50 AS QS PB 821 1250 1150 100 575 575 455 455 1150 1050 1620

Dimensions and Weight

Airflow (m³/Hr) 2200 2000 1800 1600 1400 1200 1000 700

Dry Efficiency % 80.1 82.7 83.8 85.1 86.3 87.6 88.9 89.7Wet Efficiency % 78.6 78.9 80.2 82.2 78.1 79.8 83.3 81.7Supply Air Lat °C 15.8 16.5 16.8 17.1 17.5 17.8 18.2 18.4Energy Recovered (Kw) 23 21 20 18 16 14 11 8

EQUAL AIRFLOWSECO DIRECTIVE ErP 2016/2018 COMPLIANTRotary Thermal Wheel efficiency based on return air entering at 21°C db/50% relative humidity.Supply air entering at -5°C db/95% relative humidity.

Rotary Thermal Wheel Efficiency %

Fan DataMotor output 390WATTSElectric supply 240V/1/50HzMaximum current rating 2.6AmpsMaximum Speed @10Volts 2350RPMFan Reference EC310/390/1F

Filter DataG3 or G4 grade panel filters.

Energy RecoveryRotary Thermal WheelModel TW1000

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

10


Airflow (m³/Hr) 2200 2000 1800 1600 1400 1200 1000 700Inlet SWL (db) 72 70 70 69 69 68 70 69Outlet SWL (db) 78 75 76 75 74 75 75 74 Absorbed power (Watts) 310 315 320 325 330 336 342 350





S

H1

H4

H5

H

H2

W2

W1

H6

H7

L1H3

125

L2

RETURN

AIR

EXHAUST

AIR

FRESH

AIR

E

SUPPLY

AIR

R


Casework Class Weight (kg) H1 H2 H3 H4 H5 H6 H7 W1 W2 L1 L2

30/25 FG 496 1210 1110 100 555 555 475 475 1110 1050 1500 32030/25 AS 622 1210 1110 100 555 555 475 475 1110 1050 1500 32030/25 PB 517 1210 1110 100 555 555 475 475 1110 1050 1500 32030/25 TS PB 718 1210 1110 100 555 555 475 475 1110 1050 1500 32050/50 FG 550 1250 1150 100 575 575 455 455 1150 1050 1620 36050/50 FG PB 601 1250 1150 100 575 575 455 455 1150 1050 1620 36050/50 FG TS PB 718 1250 1150 100 575 575 455 455 1150 1050 1620 36050/50 AS TS PB 844 1250 1150 100 575 575 455 455 1150 1050 1620 36050/50 AS QS PB 957 1250 1150 100 575 575 455 455 1150 1050 1620 360

NOTE Type 2 (T2) AHTW Units have a single bottom deck section attached to the type 1 Unit (T1), containing anelectric or LPHW heating coil as illustrated on the above diagram.


Airflow (m³/Hr) 2200 2000 1800 1600 1400 1200 1000 700

Dry Efficiency % 80.1 82.7 83.8 85.1 86.3 87.6 88.9 89.7Wet Efficiency % 78.6 78.9 80.2 82.2 78.1 79.8 83.3 81.7Supply Air Lat °C 15.8 16.5 16.8 17.1 17.5 17.8 18.2 18.4 Energy Recovered (Kw) 23 21 20 18 16 14 11 8






Electric Heater DataBased on maximum airflow9Kw single or three phaseelectric supply.

LPHW Coil DataBased on maximum airflowand LPHW @ 82/71°C. Maximum heating output10Kw.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

11





NOTE Type 3 (T3) AHTW Units have a single bottom deck section attached to the type 1 (T1) unit, containing anelectric or LPHW heating coil, together with a chilled water or direct expansion cooling coil.A heat pump coil is also available in this section as an option. All as illustrated on the above diagram.


Fan DataMotor output 390WATTSElectric supply 240V/1/50HzMaximum current rating 2.6AmpsMaximum Speed @10Volts 2350RPMFan Reference EC 310-390/1F



Electric Heater DataBased on maximum airflow 9Kwsingle or three phase electric supply.

LPHW Coil DataBased on maximum airflow andLPHW @ 82/71°C.Maximum heating output 10Kw.

Cooling/Heat Pump Coil DataChilled water/direct expansion coildata based on maximum airflow &chilled water @ 6/12°C or DXevaporating @ 6°C.Max cooling output 9Kw.





Airflow (m³/Hr) 2100 1900 1700 1500 1300 1100 900 600




H3

H7

FRONT ELEVATION END ELEVATION

H1

H4

H5

H2

W2

W1

H6

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

12



END ELEVATION

H1

H4

H5H7

FRONT ELEVATION

H2

W2

W1

H6

H3

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR



NOTE Type 3 (T3) AHTW Units have a single bottom deck section attached to the type 1 (T1) unit, containing anelectric or LPHW heating coil, together with a chilled water or direct expansion cooling coil.A heat pump coil is also available in this section as an option. All as illustrated on the above diagram.Section includes a F5 to F7 grade Bag Filter arranged for side withdrawal.



Filter DataG3 or G4 grade panel filters.Secondary F7 grade Bag Filters





External Pressure Pascals 50 100 150 200 250

Airflow (m³/Hr) 1600 1400 1200 1000 750Inlet SWL (db) 71 71 72 72 71Outlet SWL (db) 76 77 78 78 77Absorbed power (Watts) 362 360 356 350 346



Airflow (m³/Hr) 1600 1400 1200 1000 750

Dry Efficiency % 85.1 86.3 87.6 88.9 90.6Wet Efficiency % 83.0 79.9 87.3 89.5 92.2Supply Air Lat °C 17.1 17.5 17.8 18.2 18.6Energy Recovered (Kw) 18 16 14 12 9

EQUAL AIRFLOWSECO DIRECTIVE ErP 2016/2018 COMPLIANTRotary Thermal Wheel efficiency based on return air entering at 21°C db/50% relative humidity.Supply air entering at -5°C db/95% relative humidity.Secondary filter 380mm long bag filter F7grade (pressure drop allowance 200Pa)


AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

13

External Pressure Pascals 50 100 150 200 250 300 350 400 450 500 550 600 650

Airflow (m³/Hr) 3000 2900 2750 2600 2500 2300 2200 2000 1900 1800 1650 1500 1200Inlet SWL (db) 82 81 80 81 81 78 77 76 76 76 78 75 75Outlet SWL (db) 84 84 82 84 83 81 80 79 78 78 78 77 77Absorbed power (Watts) 630 637 642 648 652 657 661 666 660 654 650 645 640





H1

H4

H5

H2

W2

W1

H6

H7

L1

H4

H5

H3

125

RETURN

AIR

EXHAUST

AIR

FRESH

AIR

SUPPLY

AIR





Airflow (m³/Hr) 3000 2900 2750 2600 2500 2300 2200 2000 1900 1800 1650 1500 1200

Dry Efficiency % 80.2 80.7 81.4 82.1 82.5 83.5 84.0 85.0 85.5 86.0 86.7 87.5 89.1Wet Efficiency % 74.8 75.6 76.7 77.9 78.7 80.3 81.1 82.8 78.8 84.5 85.8 87.1 89.8Supply Air Lat °C 15.9 16.0 16.2 16.4 16.5 16.7 16.9 17.1 17.2 17.4 17.6 17.8 18.2Energy Recovered (Kw) 31 30 29 28 27 25 24 22 21 20 19 17 14






AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

14



H7

H3

L2


H1

H4

H5

H2

W2

W1

H6

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR














Airflow (m³/Hr) 3000 2900 2750 2600 2500 2300 2200 2000 1900 1800 1650 1500 1200




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

15



H3

H7


H1

H4

H5

H2

W2

W1

H6

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR








Cooling/Heat PumpCoil DataChilled water/directexpansion coil data basedon maximum airflow &chilled water @ 6/12°C orDX evaporating @ 6°C.Max cooling output 20Kw.

External Pressure Pascals 50 100 150 200 250 300 350 400 450 500 550 600

Airflow (m³/Hr) 2750 2650 2500 2400 2275 2150 2000 1850 1700 1550 1350 1200Inlet SWL (db) 83 82 80 79 78 76 77 78 79 79 78 78Outlet SWL (db) 86 85 83 82 81 80 81 82 83 83 83 83Absorbed power (Watts) 635 639 644 647 649 648 646 642 638 633 625 616



Airflow (m³/Hr) 2750 2650 2500 2400 2275 2150 2000 1850 1700 1550 1350 1200

Dry Efficiency % 81.4 81.8 82.5 83.0 83.6 84.2 85.0 85.7 86.5 87.3 88.3 89.1Wet Efficiency % 76.7 77.5 78.7 79.5 80.5 81.5 82.8 84.1 85.4 86.7 88.5 89.8Supply Air Lat °C 16.2 16.3 16.5 16.6 16.8 16.9 17.1 17.3 17.5 17.7 18.0 18.2Energy Recovered (Kw) 29 28 27 26 25 24 22 21 19 18 16 14





AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

16



END ELEVATION

H1

H4

H5H7

FRONT ELEVATION

H2

W2

W1

H6

H3

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR






Filter DataG3 or G4 grade panel filters.Secondary F7 Bag Filters.



External Pressure Pascals 50 100 150 200 250 300 350 400 450 500

Airflow (m³/Hr) 2500 2300 2150 2000 1900 1800 1650 1500 1350 1200Inlet SWL (db) 79 79 78 77 76 75 79 79 78 77Outlet SWL (db) 81 81 80 79 79 78 83 83 83 82Absorbed power (Watts) 652 657 650 644 639 630 622 612 606 600



Airflow (m³/Hr) 2500 2300 2150 2000 1900 1800 1650 1500 1350 1200

Dry Efficiency % 82.5 83.5 84.2 85.0 85.5 86.0 86.7 87.5 88.3 89.1Wet Efficiency % 78.7 80.3 81.5 82.8 83.3 84.5 85.8 87.1 88.0 89.8Supply Air Lat °C 16.5 16.7 16.9 17.1 17.3 17.4 17.6 17.8 18.0 18.2Energy Recovered (Kw) 27 25 24 22 21 20 19 17 16 14

EQUAL AIRFLOWSECO DIRECTIVE ErP 2016/2018 COMPLIANTRotary Thermal Wheel efficiency based on return air entering at 21°C db/50% relative humidity.Supply air entering at -5°C db/95% relative humidity. Secondary Filter 380mm long Bag Filter F7 grade (pressure dropallowance 200Pa).



LPHW Coil DataBased on maximum airflow andLPHW @ 82/71°C.Maximum heating output 17Kw..

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

17






END ELEVATION

H1

H4

H5

H4

H5 H7

FRONT ELEVATION

H2

W2

W1

H6

H3L1

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 4400 4000 3600 3200 2800 2400 2000 1400







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

18











Airflow (m³/Hr) 4400 4000 3600 3200 2800 2400 2000 1400








LPHW Coil DataBased on maximum airflowand LPHW @ 82/71°C.Maximum heating output26Kw.


S

H1

H4

H5

H

H2

W2

W1

H6

H7

L1H3

125

L2

RETURN

AIR

EXHAUST

AIR

FRESH

AIR

E

SUPPLY

AIR

R

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

19



H3

H7


H1

H4

H5

H2

W2

W1

H6

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR















Airflow (m³/Hr) 4200 3800 3400 3000 2600 2200 1800 1200




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

20



END ELEVATION

H1

H4

H5H7

FRONT ELEVATION

H2

W2

W1

H6

H3

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR







Energy RecoveryRotary Thermal WheelModel TW1500 - 1400








Airflow (m³/Hr) 3200 2800 2400 2000 1440

Dry Efficiency % 88.4 88.8 89.2 88.5 88.9Wet Efficiency % 88.6 89.3 89.9 88.9 89.5Supply Air Lat °C 18.0 18.1 18.2 18.0 18.2Energy Recovered (Kw) 27 25 24 22 21



AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

21






END ELEVATION

H1

H4

H5

H4

H5 H7

FRONT ELEVATION

H2

W2

W1

H6

H3L1

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 3000 2900 2750 2600 2500 2300 2200 2000 1900 1800 1650 1500 1200







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

22



H7

H3

L2


H1

H4

H5

H2

W2

W1

H6

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR














Airflow (m³/Hr) 6000 5800 5500 5200 5000 4600 4400 4000 3800 3600 3300 3000 2400




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

23



H3

H7


H1

H4

H5

H2

W2

W1

H6

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR













Airflow (m³/Hr) 5500 5300 5000 4800 4500 4300 4000 3700 3400 3100 2700 2400






AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

24



END ELEVATION

H1

H4

H5H7

FRONT ELEVATION

H2

W2

W1

H6

H3

L2

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR













Airflow (m³/Hr) 4800 4600 4300 4000 3800 3600 3300 3000 2700 2400






AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

25






END ELEVATION

H1

H4

H5

H7

FRONT ELEVATION

H2

W2

W1

H6

H4

H5

H3L1

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 6600 6000 5400 4800 4200 3600 3000 2100







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

26






H1

H4

H5

H7

H2

W2

W1

H6

END ELEVATIONFRONT ELEVATIONSIDE ELEVATION

H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

SUPPLY

AIR






Airflow (m³/Hr) 6600 6000 5400 4800 4200 3600 3000 2100









AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

27



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

H7

H2

W2

W1

H6





Fan DataMotor output 1170 WATTSElectric supply 240V/1/50HzMaximum current rating 7.8AmpsMaximum Speed @10Volts 2350RPMFan Reference EC310/390 /3F


Energy RecoveryRotary Thermal WheelModel TW1500 – 1000








Airflow (m³/Hr) 6300 5700 5100 4500 3900 3300 2700 1800




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

28



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIRH7

H2

W2

W1

H6











External Pressure Pascals 50 100 150 200 250 300 350

Airflow (m³/Hr) 4800 4200 3600 3000 2160 1410 960Inlet SWL (db) 73 73 72 72 72 71 71Outlet SWL (db) 79 79 78 78 77 77 76Absorbed power (Watts) 1026 1007 999 987 977 970 963



Airflow (m³/Hr) 4800 4200 3600 3000 2160 1410 960

Dry Efficiency % 78.8 81.3 81.3 81.6 80.4 81.1 81.7Wet Efficiency % 83.0 84.5 84.5 84.7 84.0 84.9 85.3Supply Air Lat °C 16.6 17.0 17.0 17.0 16.9 16.7 16.4Energy Recovered (Kw) 52 46 40 33 24 17 14



AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

29






END ELEVATION

H1

H4

H5

H7

FRONT ELEVATION

H2

W2

W1

H6

H4

H5

H3L1

SIDE ELEVATION

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 9000 8700 8250 7800 7500 6900 6600 6000 5700 5400 4900 4500 3500







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

30



H1

H4

H5H7

H2

W2

W1

H6


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

SUPPLY

AIR














Airflow (m³/Hr) 9000 8700 8250 7800 7500 6900 6600 6000 5700 5400 4900 4500 3500




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

31



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIRH7

H2

W2

W1

H6












Airflow (m³/Hr) 8200 7900 7500 7200 6700 6400 6000 5500 5100 4100 4000 3600







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

32



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIRH7

H2

W2

W1

H6












Airflow (m³/Hr) 7500 6900 6400 6000 5700 5400 4900 4500 4000 3600







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

33






H1

H4

H5

H4

H5 H7

H2

W2

W1

H6


H3L1

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 8800 8000 7200 6400 5600 4800 4000 2800







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

34


Airflow (m³/Hr) 8800 8000 7200 6400 5600 4800 4000 2800Inlet SWL (db) 76 74 74 73 73 72 74 73 Outlet SWL (db) 82 79 80 79 78 79 79 78Absorbed power (Watts) 1240 1260 1280 1300 1320 1344 1368 1400




H1

H4

H5


H3

L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

H7

H2

W2

W1

H6






Airflow (m³/Hr) 8800 8000 7200 6400 5600 4800 4000 2800









AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

35



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR H7

H2

W2

W1

H6









LPHW Coil DataBased on maximum airflow andLPHW @ 82/71°C. Maximumheating output 46Kw.

Cooling/Heat Pump Coil DataChilled water/direct expansion coildata based on maximum airflow &chilled water @ 6/12°C or DXevaporating @ 6°C. Max coolingoutput 45Kw.





Airflow (m³/Hr) 8400 7600 6800 6000 5200 4400 3600 2400




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

36



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

H7

H2

W2

W1

H6















Airflow (m³/Hr) 6400 5600 4800 4000 3000

Dry Efficiency % 73.6 81.2 81.5 82.9 82.3Wet Efficiency % 83.4 84 84.2 85 84.7Supply Air Lat °C 16.7 16.9 16.9 17.1 17.0Energy Recovered (Kw) 67 61 53 44 33



AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

37






H1

H4

H5

H4

H5 H7

H2

W2

W1

H6


H3L1

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR





Airflow (m³/Hr) 12000 11600 11000 10400 10000 9200 8800 8000 7600 7200 6600 6000 4800







AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

38



H1

H4

H5


H3

L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

H7

H2

W2

W1

H6














Airflow (m³/Hr) 12000 11600 11000 10400 10000 9200 8800 8000 7600 7200 6600 6000 4800




AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

39



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR H7

H2

W2

W1

H6













Airflow (m³/Hr) 11000 10600 10000 9600 9100 8600 8000 7400 6800 6200 5400 4800

Dry Efficiency % 77.1 77.9 79.1 79.9 80.9 81.9 83.1 82.3 84 83.7 84 83.8Wet Efficiency % 81.6 82.1 82.8 83.2 83.8 84.4 85.1 84.9 85.7 85.5 85.7 85.6Supply Air Lat °C 16.2 16.4 16.5 16.7 16.8 17.0 17.2 17.1 17.3 17.3 17.3 17.3Energy Recovered (Kw) 116 113 107 104 99 95 89 82 76 69 61 54





AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

40



H1

H4

H5


H3L1 L2

125

EXHAUST

AIR

FRESH

AIR

RETURN

AIR

SUPPLY

AIR

H7

H2

W2

W1

H6












Airflow (m³/Hr) 10000 9200 8600 8000 7600 7200 6600 6000 5400 4800

Dry Efficiency % 79.1 80.7 81.9 83.1 82.2 81.1 80.5 79.9 79.3 79.6Wet Efficiency % 82.8 83.7 84.4 85.1 84.6 84 83.6 83.2 82.9 83Supply Air Lat °C 16.5 16.8 17 17.2 17.0 16.9 16.8 16.7 16.6 16.6Energy Recovered (Kw) 107 100 95 89 84 79 72 65 58 52






AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

41

Performance Graphs…

600

500

400

300

200

100

Airflow (M3/Hr)

Exte

rnal

Res

ista

nce

(PA

)

Type 1 & 2 - 310 / 390 Fans

2000 4000 6000 8000 10000 12000

AH

TW1100 / T1 &

2 / 310-390 / 1FA

HTW

1500 / T1 & 2 / 310-390 / 2F

AHTW

1700 / T1 & 2 / 310-390 / 3F

AHTW2200 / T1 &

2 / 310-390 / 4F

600

700

500

400

300

200

100

Airflow (M3/Hr)

Exte

rnal

Res

ista

nce

(PA

)

Type 1 & 2 - 310 / 680 Fans

2000 4000 6000 8000 10000 12000 1400

AH

TW1100 / T1 &

2 / 310-680 / 1F

AH

TW1600 / T1 &

2 / 310-680 / 2FA

HTW

1900 / T1 & 2 / 310-680 / 3F

AHTW2200 / T1 &

2 / 310-680 / 4F

600

500

400

300

200

100

Airflow (M3/Hr)

Exte

rnal

Res

ista

nce

(PA

)

Type 3 - 310 / 390 Fans

2000 4000 6000 8000 10000 12000

AH

TW1100 / T3 / 310-390 / 1F

AH

TW1500 / T3 / 310-390 / 2F

AHTW

1700 / T3 / 310-390 / 3F

AHTW2200 / T3 / 310-390 / 4F

600

700

500

400

300

200

100

Airflow (M3/Hr)

Exte

rnal

Res

ista

nce

(PA

)

Type 3 - 310 / 680 Fans

2000 4000 6000 8000 10000 12000 1400

AH

TW1100 / T3 / 310-680 / 1F

AH

TW1600 / T3 / 310-680 / 2F

AH

TW1900 / T3 / 310-680 / 3F

AHTW2200 / T3 / 310-680 / 4F

3000 5000 7000 8000

Airflow (M3/Hr)

500

600

400

300

200

100

1000 2000 4000 6000

Exte

rnal

Res

ista

nce

(PA

)

Type 4 - 310 / 390 Fans

AHTW

1000 / T14 / 310-390 / 1FAHTW

1500 / T4 / 310-390 / 2F

AHTW1700 / T4 / 310-390 / 3F

AHTW2200 / T4 / 310-390 / 4F

600

500

400

300

200

100

Airflow (M3/Hr)

Exte

rnal

Res

ista

nce

(PA

)

Type 4 - 310 / 680 Fans

2000 4000 6000 8000 10000 12000

AH

TW1100 / T4 / 310-390 / 1F

AH

TW1600 / T4 / 310-390 / 2F

AH

TW1900 / T4 / 310-390 / 3F

AHTW

2200 / T4 / 310-390 / 4F

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

42

Weatherproofing - External Model…For externally mounted AHTW Compact Units, fullyweatherproof construction options are provided,incorporating a pent style roof with directional gradientslopes to protect against rain ingress as illustrated below.


EXHAUST

AIR

FRESH

AIR

RETURN

AIR

RETURN

AIR

RETURN

AIR

RETURN

AIR

SUPPLY

AIR

SUPPLY

AIR

SUPPLY

AIR

SUPPLY

AIR




EXHAUST

AIR

FRESH

AIR

EXHAUST

AIR

FRESH

AIR

EXHAUST

AIR

FRESH

AIR

Type 1

Type 2

Type 3

Type 4

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

43

AHTW REF WEIGHT KG W D H

AHTW 1000/390/1F/30/25 10.4 1050 200 475AHTW 1000/390/1F/50/50 9.9 1050 200 455AHTW 1100/680/1F/30/25 12.6 1150 200 525AHTW 1100/680/1F/50/50 12.1 1150 200 505AHTW 1500/390/2F/30/25 30.5 1450 300 675AHTW 1500/390/2F/50/50 29.6 1450 300 655AHTW 1600/680/2F/30/25 32.6 1550 300 675AHTW 1600/680/2F/50/50 31.7 1550 300 655AHTW 1700/390/3F/30/25 45.1 1750 300 825AHTW 1700/390/3F/50/50 43.9 1750 300 805AHTW 1900/680/3F/30/25 65.7 1950 350 925AHTW 1900/680/3F/50/50 64.2 1950 350 905AHTW 2200/390/4F/30/25 93 2140 400 1045AHTW 2200/390/4F/50/50 89.8 2160 400 1000AHTW 2200/680/4F/30/25 92.6 2140 400 1040AHTW 2200/680/4F/50/50 89.9 2160 400 1000

AHTW REF WEIGHT KG W D H

AHTW 1000/390/1F/30/25 9.1 1050 80 475AHTW 1000/390/1F/50/50 9.0 1050 80 455AHTW 1100/680/1F/30/25 12.2 1150 80 525AHTW 1100/680/1F/50/50 11.9 1150 80 505AHTW 1500/390/2F/30/25 16.1 1450 100 675AHTW 1500/390/2F/50/50 15.3 1450 100 655AHTW 1600/680/2F/30/25 17.4 1550 100 675AHTW 1600/680/2F/50/50 17.1 1550 100 655AHTW 1700/390/3F/30/25 25.7 1750 100 825AHTW 1700/390/3F/50/50 24.9 1750 100 805AHTW 1900/680/3F/50/50 29.9 1950 100 925AHTW 1900/680/3F/50/50 28.6 1950 100 905AHTW 2200/390/4F/30/25 36.2 2140 100 1040AHTW 2200/390/4F/50/50 34.3 2160 100 1000AHTW 2200/680/4F/30/25 36.2 2140 100 1040AHTW 2200/680/4F/50/50 34.3 2160 100 1000

D

H

W

H

D

W

Standard Weather CowlStandard weather cowls containlouvre blades to give addedweather protection. The cowlsare constructed from plastisolplastic coated sheet steel.

Standard LouvreDeep seal weather louvres areprovided as standard on fresh airintakes and exhaust air outlets,constructed from anodisedaluminium with plastisol plasticcoated steel frame.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

44

Attenuator Performance…Insertion losses for different attenuatorlengths serving atmospheric and systemside, for both integral or bolt on style.

Attenuation… All attenuators are provided to match theAHTW Compact unit and can be supplied as anintegral or bolt on arrangement. This isrecommended to prevent noise flanking theattenuators, or the need to acoustic lag theductwork.

If the attenuators are positioned away from thenoise source (i.e. AHTW Compact), then ductnoise breakout will occur, unless the duct isacoustically lagged to the same high standard,as the AHTW Casework.

Option 1

Splitter absorbers inbuilt into the AHTW Compactunit Casework which provides a uniform caseworkappearance, as shown on Figures 2 and 3 on page 47.

Option 2

Duct style attenuators with bolt on arrangement asshown below. The splitter absorbers are containedwithin a galvanized flanged sheet steel duct. Purposedesigned bolt on type attenuators have mezz ordolby flanges to match the air handling unit frames,and can have optional inlet/outlet fairings.

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

45

Attenuator Performance 600mm long

Model Insertion Loss db


AHTW 1000/1F/390 -6 -12 -22 -31 -40 -40 -40 -38

AHTW 1100/1F/680 -6 -13 -24 -33 -42 -42 -42 -40

AHTW 1500/2F/390 -7 -13 -24 -33 -42 -42 -42 -32

AHTW 1600/2F/680 -6 -12 -22 -31 -40 -40 -40 -38

AHTW 1700/3F/390 -6 -12 -24 -33 -42 -42 -42 -30

AHTW 1900/3F/680 -7 -13 -24 -33 -42 -42 -42 -32

AHTW 2200/4F/390 -7 -12 -24 -32 -40 -40 -40 -30

AHTW 2200/4F/680 -7 -12 -24 -32 -40 -40 -40 -30




AHTW 1000/1F/390 -8 -15 -26 -44 -48 -47 -47 -45

AHTW 1100/1F/680 -8 -16 -27 -45 -49 -49 -48 -47

AHTW 1500/2F/390 -8 -17 -28 -46 -49 -49 -49 -48

AHTW 1600/2F/680 -8 -15 -26 -45 -49 -48 -48 -47

AHTW 1700/3F/390 -8 -16 -27 -45 -49 -49 -48 -47

AHTW 1900/3F/680 -9 -18 -29 -48 -52 -51 -51 -49

AHTW 2200/4F/390 -9 -18 -30 -48 -52 -52 -52 -50

AHTW 2200/4F/680 -9 -18 -30 -48 -52 -52 -52 -50




AHTW 1000/1F/390 -10 -20 -35 -50 -50 -51 -51 -50

AHTW 1100/1F/680 -10 -19 -34 -49 -48 -50 -50 -49

AHTW 1500/2F/390 -10 -20 -35 -50 -50 -51 -51 -50

AHTW 1600/2F/680 -9 -18 -33 -48 -48 -49 -49 -48

AHTW 1700/3F/390 -10 -19 -34 -49 -48 -50 -50 -49

AHTW 1900/3F/680 -10 -20 -35 -50 -50 -51 -51 -50

AHTW 2200/4F/390 -10 -21 -35 -51 -52 -52 -51 -50

AHTW 2200/4F/680 -10 -21 -35 -51 -52 -52 -51 -50




AHTW 1000/1F/390 -14 -26 -44 -53 -53 -53 -53 -50

AHTW 1100/1F/680 -14 -25 -42 -51 -51 -51 -51 -48

AHTW 1500/2F/390 -14 -26 -44 -53 -53 -53 -53 -50

AHTW 1600/2F/680 -14 -23 -40 -50 -50 -50 -50 -47

AHTW 1700/3F/390 -14 -26 -43 -52 -52 -52 -52 -49

AHTW 1900/3F/680 -14 -26 -43 -52 -52 -52 -52 -49

AHTW 2200/4F/390 -14 -26 -44 -53 -53 -53 -53 -50

AHTW 2200/4F/680 -14 -26 -44 -53 -53 -53 -53 -50

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

46




AHTW 1000/1F/390 -16 -30 -52 -53 -53 -54 -54 -52

AHTW 1100/1F/680 -16 -29 -49 -50 -50 -51 -51 -49

AHTW 1500/2F/390 -16 -30 -52 -53 -53 -54 -54 -52

AHTW 1600/2F/680 -16 -28 -48 -49 -49 -49 -49 -48

AHTW 1700/3F/390 -16 -30 -52 -53 -53 -54 -54 -52

AHTW 1900/3F/680 -16 -30 -52 -52 -53 -54 -54 -52

AHTW 2200/4F/390 -16 -31 -53 -53 -53 -54 -54 -52

AHTW 2200/4F/680 -16 -31 -53 -53 -53 -54 -54 -52

AHTW REF W H L WEIGHT (Kg)

AHTW 1000/1F/390 1050mm 475mm 600mm 37AHTW 1100/1F/680 1210mm 505mm 600mm 44AHTW 1500/2F/390 1450mm 655mm 600mm 64AHTW 1600/2F/680 1550mm 655mm 600mm 70AHTW 1700/3F/390 1750mm 805mm 600mm 86AHTW 1900/3F/680 1950mm 905mm 600mm 107AHTW 2200/4F/390 2160mm 1000mm 600mm 125AHTW 2200/4F/680 2160mm 1000mm 600mm 125





Attenuator Dimensions and Weights...

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

47

Acoustic Louvre…As an option to attenuators or attenuator cowlson the air intake and discharge of external AHTWair handling units, acoustic louvres can be used asan alternative method of reducing theatmospheric side air noise. Four different depthsare available with the noise reduction,dimensions and weights as shown on pages 48

and 49.

Acoustic louvres have four depths, offering adifferent insertion loss for each depth. The chart onpage 48 gives the noise reduction for each depth300mm, 400mm, 500mm, 600mm.



RETURN

AIR

RETURN

AIR

EXHAUST

AIR

FRESH

AIR

EXHAUST

AIR

FRESH

AIR

SUPPLY

AIR

SUPPLY

AIR


RETURN

AIR

EXHAUST

AIR

FRESH

AIR

SUPPLY

AIR

External AHTW compact with inlet and exhaust acoustic louvres on a Type 4 configuration unit (Fig 1).

External AHTW compact with inlet and exhaust acoustic louvres. Also supply and return air integralattenuators on a Type 1 configuration unit (Fig 2).

External AHTW compact with inlet and exhaust acoustic louvres. Also supply and return air integralattenuators on a Type 3 configuration unit (Fig 3).

Figure 1

Figure 2

Figure 3

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

48

AHTW REF WEIGHT (Kg) W H D

AHTW 1000/390/1F/30-25 16.2 1050mm 470mm 300mmAHTW 1000/390/1F/30-25 21.6 1050mm 470mm 400mmAHTW 1000/390/1F/30-25 27.0 1050mm 470mm 500mmAHTW 1000/390/1F/30-25 32.5 1050mm 470mm 600mmAHTW 1000/390/1F/50-50 16.2 1050mm 470mm 300mmAHTW 1000/390/1F/50-50 21.6 1050mm 470mm 400mmAHTW 1000/390/1F/50-50 27.0 1050mm 470mm 500mmAHTW 1000/390/1F/50-50 32.5 1050mm 470mm 600mm

Dimensions & Weights

HE

IGH

T

SIDE VIEW

WID

TH

PLAN VIEW

WIDTH

AIRWAY

AIRWAY

DEPTH

FRONT VIEW


Insertion Loss db 300mm -4 -5 -7 -10 -16 -20 -20 -14




Acoustic Louvre Performance

Acoustic Louvre Performance, Dimensions and Weights...

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

49

AHTW REF WEIGHT (Kg) W H D

AHTW 1100/680/1F/30-25 20 1210mm 505mm 300mmAHTW 1100/680/1F/30-25 26.6 1210mm 505mm 400mmAHTW 1100/680/1F/30-25 33.3 1210mm 505mm 500mmAHTW 1100/680/1F/30-25 40 1210mm 505mm 600mmAHTW 1100/680/1F/50-50 20 1210mm 505mm 300mmAHTW 1100/680/1F/50-50 26.6 1210mm 505mm 400mmAHTW 1100/680/1F/50-50 33.3 1210mm 505mm 500mmAHTW 1100/680/1F/50-50 40 1210mm 505mm 600mm

AHTW 1500/390/2F/30-25 34 1450mm 655mm 300mmAHTW 1500/390/2F/30-25 45.3 1450mm 655mm 400mmAHTW 1500/390/2F/30-25 56.6 1450mm 655mm 500mmAHTW 1500/390/2F/30-25 68 1450mm 655mm 600mmAHTW 1500/390/2F/50-50 34 1450mm 655mm 300mmAHTW 1500/390/2F/50-50 45.3 1450mm 655mm 400mmAHTW 1500/390/2F/50-50 56.6 1450mm 655mm 500mmAHTW 1500/390/2F/50-50 68 1450mm 655mm 600mm

AHTW 1600/680/2F/30-25 36.4 1550mm 655mm 300mmAHTW 1600/680/2F/30-25 48.5 1550mm 655mm 400mmAHTW 1600/680/2F/30-25 60.7 1550mm 655mm 500mmAHTW 1600/680/2F/30-25 72.8 1550mm 655mm 600mmAHTW 1600/680/2F/50-50 36.4 1550mm 655mm 300mmAHTW 1600/680/2F/50-50 48.5 1550mm 655mm 400mmAHTW 1600/680/2F/50-50 60.7 1550mm 655mm 500mmAHTW 1600/680/2F/50-50 72.8 1550mm 655mm 600mm

AHTW1700/390/3F/30-25 50.5 1750mm 805mm 300mmAHTW1700/390/3F/30-25 67.3 1750mm 805mm 400mmAHTW1700/390/3F/30-25 84.1 1750mm 805mm 500mmAHTW1700/390/3F/30-25 101 1750mm 805mm 600mmAHTW1700/390/3F/50-50 50.5 1750mm 805mm 300mmAHTW1700/390/3F/50-50 67.3 1750mm 805mm 400mmAHTW1700/390/3F/50-50 84.1 1750mm 805mm 500mmAHTW1700/390/3F/50-50 101 1750mm 805mm 600mm

AHTW1900/680/3F/30-25 63.2 1950mm 905mm 300mmAHTW1900/680/3F/30-25 84.2 1950mm 905mm 400mmAHTW1900/680/3F/30-25 105.3 1950mm 905mm 500mmAHTW1900/680/3F/30-25 126.4 1950mm 905mm 600mmAHTW1900/680/3F/50-50 63.2 1950mm 905mm 300mmAHTW1900/680/3F/50-50 84.2 1950mm 905mm 400mmAHTW1900/680/3F/50-50 105.3 1950mm 905mm 500mmAHTW1900/680/3F/50-50 126.4 1950mm 905mm 600mm

AHTW2200/390/4F/30-25 123.6 2160mm 1000mm 300mmAHTW2200/390/4F/30-25 164.8 2160mm 1000mm 400mmAHTW2200/390/4F/30-25 206 2160mm 1000mm 500mmAHTW2200/390/4F/30-25 247.2 2160mm 1000mm 600mmAHTW2200/390/4F/50-50 123.6 2160mm 1000mm 300mmAHTW2200/390/4F/50-50 164.8 2160mm 1000mm 400mmAHTW2200/390/4F/50-50 206 2160mm 1000mm 500mmAHTW2200/390/4F/50-50 247.2 2160mm 1000mm 600mmAHTW2200/680/4F/30-25 123.6 2160mm 1000mm 300mmAHTW2200/680/4F/30-25 164.8 2160mm 1000mm 400mmAHTW2200/680/4F/30-25 206 2160mm 1000mm 500mmAHTW2200/680/4F/30-25 247.2 2160mm 1000mm 600mmAHTW2200/680/4F/50-50 123.6 2160mm 1000mm 300mmAHTW2200/680/4F/50-50 164.8 2160mm 1000mm 400mmAHTW2200/680/4F/50-50 206 2160mm 1000mm 500mmAHTW2200/680/4F/50-50 247.2 2160mm 1000mm 600mm

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

50

PVHRU Max QuietPackaged Void HeatReclaim Unit

Envirofresh 73 Quiet

Benefits

• Meets TM52 for Schools• Meets BB93 Feb 2015• Renewable Energy Source• BMS Controls Installed in Unit• Factory Pre-Commissioned• Heating and Cooling from One Source• 50% Less CO2 Production than a Gas Boiler• Low Energy Consumption• Reduced Site Installation Cost• No External Condensing Units, Pipework or wiring• Low Noise Emissions with Silenced Compressors• High Specification UKAS Certified Low Breakout Casework• No Loss of Heating Capacity at Low Temperatures• Room Heating and Cooling available at Reduced Air Volumes• Tempered Air Supply without Defrosting• No Increase in Footprint over Standard AHUs• More Pleasant External Appearance than Condensing Unit or Chiller Installations

Low Energy, Air Source Heat Pump System,Silenced with Acoustic Treatment asused in Hundreds of Projects

Envirofresh 73 Quiet

OutPerforms

Benefits• Low profile from 300mm deep.

• Up to 90% Heat Recovery efficiency.

• Outperforms ErP 2018.

• Heating Coil options. LPHW or electric.

• Cooling coil options chilled water or DX.

• Heat pump coil options.

• TM52 compliant.

• On board controls available.

• Filtration to F7.

• Summer by pass facility.

• High sound reduction casework tested to BS EN ISO 10140-2(2010) UKAS certified.

• High performance backward curved centrifugal fans with lowspecific fan power.

• Meets BB101 and BB93 Feb 2015.

• Bottom access.

From

300

mm Deep

AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

51

Benefits• Low SFP• Tonal noise control• Matching attenuators• Weatherproof options• Low noise breakout• Meets BB 93 Feb 2015• High sound reduction casework tested to BS EN ISO 10140-2 (2010)• Backward curved, low speed, EC fans• Attenuators/cowls and acoustic louvre options• Auto change over control system for duty and stand by operation on VTI units• Suspension brackets with vibration control available• Fan motor isolators fitted as standard• Variable volume control system - Vari Vol• Speed regulation 0>10 Volts• Bottom and side access

Series VSI/VTI Single & Twin LowProfile Quiet ExtractFan Units

Single Fan Series VSI

Twin Fan Series VTI

PVU QuietPackaged Void Unit

low Profile Unit

Benefits• Ultra low profile from 300mm• Option bag filters to F7 grade• Optional mixing box• Matching attenuators• Tonal noise control• Speed regulation 0>10 Volts• Heating coils - LPHW and electric• Bottom and side access• Fully integrated packaged controls• Fan motor isolator fitted as standard• High airflow / pressure performance• Low specific fan power E.C. fans backward curved• Constant pressure ‘Vari-Vol’ variable volume system available• High sound reduction casework tested to BS EN ISO 10140-2(2010)• Suspension brackets with vibration control available• Cooling coils chilled water/DX/heatpump available



AHTW

Com

pact H

eat Re

cove

ry Air H

andling Unit

Air Handlers Northern Ltd.Alfred Procter HouseBute Street, SalfordManchester M50 1DU

Tel: 0161 745 8888Fax: 0161 743 9190Email: [email protected]: www.airhandlers.net

The company reserves the right to make any variation in technical specification to the equipment described, or to withdraw or replace productswithout prior notification or public announcement. Air Handlers Northern Ltd is continually developing and improving its products. All description,illustrations, drawings and specifications in this publication present only general particulars and shall not form part of any contract. All goods are

subject to the company’s General Conditions of Sale, a copy is available on request.

• Single Cased Extract Unit VSI• Twin Fan Extract Units VTI and ITU• Classvent Units• Packaged Void Units PVU• Vertical Air Handling Units• AH Series Modular AHU’s• IDG Series Indirect Gas Fired AHU’s• DG Series Direct Gas Fired AHU’s• HOSP Health Care Specification Hygiene AHU’s• AHW Welded Frame and Stainless Units• AHTW Heat Reclaim AHU’s containing Thermal Wheels• AHPHX Heat Recovery AHU’s containing Recuperators• Freshcool Cooling only Packaged Units• Envirofresh Packaged Heat Pump Units• Attenuators and Anti-vibration Mounts• Acoustic Enclosures and Screens• Flat Pack Build and Refurbishment• Planned Maintenance and Site Repairs• Airflow/Acoustic/Leakage Performance Testing Facility• Skidpak Fully Packaged Units

Product Range... Other AssociatedLiterature...

• Sound Advice for VentilationPlant in Schools.By David Pinchbeck

• Air Handling Units AcousticInsulation Performance testReport

• BSRIA EnvirofreshPerformance Test Report

• EcoDesign Directive 2016/18

• AUTO CAD 3D

• BIM

• REVIT

td l s ahtw compact r e d heat recovery air handling …

Documents