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Doc No. 702100  Page 3 of 12 

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Typical projection for LPHW/steam 

housing (dimension H) LPHW/steam 
coils available to order.  
See contact details on rear cover of this 
document. 

2. Dimensions. 

Model A 

mm 

mm 

mm 

mm 

mm 

mm 

mm 

Weight 

(kg) 

AB 

175A 1750 523 457 507 260  86 1695 

90 

AB 

225A 2250 523 457 507 260  86 2195 

115 

mm 

201 

201 

AB 

150A 1500 523 457 507 260  86 1345 201 

80 

Diagram 1:  

Dimensions 

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R/H VIEW LPHW/STEAM

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Summary of Contents for AB 150A

Page 1: ...OC AB RANGE AMBIENT AIR CURTAIN INSTALLATION AND OPERATING MANUAL WARNINGS 1 This appliance must only be installed by a competent person in accordance with the requirements of the Codes of Practice or the rules in force 2 All external wiring MUST comply with the current IEE wiring regulations 3 Warning this appliance must be earthed Part No 702100 Nortek Global HVAC UK Limited Fens Pool Avenue Bri...

Page 2: ...talling an air curtain is to prevent the influx of cold outside air through a door opening into a heated area Typical applications include large despatch bay doors in factories and warehouses and internal doors between areas of different temperatures Wider door openings can be accommodated by bolting two or more units together Air curtains control the internal climate by emitting an air stream wit...

Page 3: ...le to order See contact details on rear cover of this document 2 Dimensions Model A mm B mm C mm D mm E mm F mm G mm Weight kg AB 175A 1750 523 457 507 260 86 1695 90 AB 225A 2250 523 457 507 260 86 2195 115 H mm 201 201 AB 150A 1500 523 457 507 260 86 1345 201 80 Diagram 1 Dimensions R H VIEW LPHW STEAM H ...

Page 4: ...1140 W Current per fan 5 2A FLC Start current per fan 12A Power Total electrical power consumption 2 28kW 3 42kW 4 56kW 2 Model AB150 AB175 AB225 AB150 x 1 AB300 x 2 AB350 x 2 AB400 x 1 x 1 AB450 x 2 AB525 x 3 AB575 x 2 x 1 AB625 x 1 x 2 AB675 x 3 Constitution AB225 x 1 table shows full range of models available and the modules that make up their construction No other variants are available WARNIN...

Page 5: ...ir curtains should be bolted together using 3 off M10 set pins nuts and washers fitted through the holes provided in the mounting brackets then suitable support channels not supplied must be fixed on top of the factory fitted brackets along the full length of the assembled air curtains to spread the load The assembly can now be fixed back to the building structure by bolting directly using suitabl...

Page 6: ...IR CURTAIN Diagram 4 Support channel multiple air curtains Typical support channels Air curtain 1 Air curtain 2 PLAN VIEW TWIN AIR CURTAINS Factory fitted brackets Support points 4 Installation Details cont Factory fitted mounting brackets WARNING THIS AIR CURTAIN SHOULD NOT BE INSTALLED WHERE THERE IS A CORROSIVE ATMOSPHERE ...

Page 7: ...then a suitably positioned limit switch and striker plate will need to be fitted to the door The panel incorporates an auto off manual selector switch which when in auto mode operates the air curtain as the door opens and closes The manual position overrides the door interlock and the off position turns the air curtain off The panel may also be fitted with optional low voltage 24V AC relays for fi...

Page 8: ... set to the required angle See Figs A B on page 5 for setting procedure 6 3 Air distribution fans The air distribution fans can be accessed by opening the fan access lid as described in section 7 1 Clean off any dust or deposits with a soft brush paying particular attention to the impeller Check that the impeller spins freely and that there is no play in the fan bearings The fan s can be removed i...

Page 9: ...d the retaining screws securing the hinged lid on the underside of the air curtain next to the louvres Fig 3 7 Parts Replacement Allen key set Adjustable spanner Cross point screwdriver 10mm spanner 13mm spanner Fig 5 Fan closure plate Fan outlet Fig 3 Fig 4 Fig 6 Fan closure plate Fan outlet The lid can now be hinged down to access the fans as shown in Fig 4 7 1 1 Fan closure plate Before individ...

Page 10: ...re Parts Item Description Part No 3 speed air distribution fan unit AB FAN Item Description Part No Air distribution fan 5 pin plug socket Plug 3127 Socket 3126 Fig 9 shows single air distribution fan in isolation for clarity 7 1 2 Fan removal Identify the feed cable for the fan requiring removal and disconnect it from its cable mount ed plug socket See Fig 7 The four bolts securing the fan can no...

Page 11: ...ontactor and associated wiring All air distribution fans off YES If the fan s still fail to operate normally please contact the Nortek service department YES Check 1 Power supply YES NO Air distribution fans NO Single fan unit off Check 1 Motor thermal trip may run when cool test motor 2 Motor wiring 3 Motor plug socket 9 Fault Finding ...

Page 12: ...tate the auto off manual control panel selector switch to the off position The air distribution fans will stop Switch off the electrical supply to the control panel The panel live lamp will extinguish 10 6 Servicing To ensure continued efficient and safe operation it is recommended that the air curtain is serviced regularly by a competent person once a year in normal working conditions but in exce...

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