Nortek AB 175E Bedienungsanleitung

Doc No. 702105 Page 1 of 16

AIRBLOC AB RANGE

ELECTRIC AIR CURTAIN

INSTALLATION AND OPERATING MANUAL

INDEX Section

General Information --------------------------------------------------------1

Dimensions --------------------------------------------------------------------2

Technical Speciﬁcations ----------------------------------------------------3

Installation Details -----------------------------------------------------------4

Wiring Details ----------------------------------------------------------------5

Servicing ----------------------------------------------------------------------6

Parts Replacement ----------------------------------------------------------7

Spare Parts --------------------------------------------------------------------8

Fault Finding -----------------------------------------------------------------9

User Instructions ----------------------------------------------------------- 10

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. 702105

Nortek Global HVAC (UK) Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA

Doc No. 702105 Page 2 of 16

1. General Information.

Welcome to the new Airbloc AB electric air

curtain models. Local regulations may vary in

the country of use and it is the installers

responsibility to ensure that such regulations are

satisfied.

All installation, assembly, commissioning and

service procedures must be carried out by

suitably qualified competent persons to the

statutory regulations in the country of use.

When assembling, installing, commissioning and

servicing is undertaken on the air curtains is

required to ensure that working at height

regulations are adhered to at the mounting

heights specified.

All dimensions shown are in mm unless

otherwise stated.

The manufacturer reserves the right to alter

specifications without prior notice.

PLEASE READ this document prior to

installation to familiarise yourself with the

components and tools you require at the

various stages.

The primary reason for installing 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 with enough velocity to

meet the floor so creating an air barrier in the

door area. To prevent the ingress of outside

draughts, the discharge louvre is angled

outwards, so that the air leaving the building

meets the wind trying to enter, thus deflecting it.

(See diagrams below).

Airbloc air curtains provide uniform air

distribution across the full width of the door,

keeping heated or conditioned air inside the

building and stopping the ingress of cold air,

draughts, and dust.

This manual provides detailed information on

the installation of Airbloc AB electric air

curtains. It is essential that these products are

installed in accordance with these

manufacturers instructions.

Without air curtain With air curtain

Pattern of airflow

Doc No. 702105 Page 3 of 16

2. Dimensions.

Diagram 1: Dimensions

FRONT VIEW

PLAN VIEW

R/H VIEW

Doc No. 702105 Page 4 of 16

3. Technical Specifications.

Air curtain model

AB 175E AB 225E

Air distribution fans

Type Centrifugal (with integral thermal trip)

Speeds 3

No. of fans 3 4

Maximum air volume 9600m3/hr 12800m3/hr

Voltage 230V 1PH 50Hz

Power rating (per fan) 1140 W

Current (per fan) 5.2A (FLC)

Start current (per fan) 12A

Power

Elements 18kW 24kW

Total power consumption 21.42kW 30.56kW

Temperature rise (∆T)

High speed 9.7°C 7.28°C

Low speed 13.86°C 10.39°C

WARNING:

THIS AIR CURTAIN SHOULD NOT BE

INSTALLED WHERE THERE IS A

CORROSIVE ATMOSPHERE.

Doc No. 702105 Page 5 of 16

Gap to be kept to a

minimum

3m minimum

Bottom of air

curtain to be

level with top of

door opening

4. Installation Details.

Health and Safety

Due account should be taken of any obligations

arising from the Health and Safety at Work Act

1974 or relevant codes of practice. In addition

the installation must be carried out in

accordance with the current IEE wiring

regulations and any other relevant British

Standards and Codes of Practice by a qualified

installer. Isolate all electrical supplies to the

heater & control panel before proceeding.

For your own safety we recommend the use of

personal protective equipment when handling

this air curtain.

Airbloc electric air curtains are supplied with

mounting brackets pre-fitted, and can be mount-

ed either as single units, or in multiples, which

can be bolted together to suit various door

widths.

The minimum mounting height is 3 metres (See

diagram 2 below).

4.1

Each single air curtain should be supported by

cantilever brackets (not supplied) then fixed

back to the building structure by bolting directly

using suitable support brackets, or by

suspending from above using suitable

steelwork. (See diagram 3, page 6).

4.2

Multiple air 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

suitable support brackets, or suspending from

above using steelwork. (See diagram 4 page 6).

If required, the support channel may be

extended slightly past the ends of the air

curtains to aid fixing.

Note: Where multiple air curtains are fitted

above up and over doors or where central

support is inappropriate, the support

channel should be replaced with channels of a

greater cross section to prevent the assembly

from bending.

4.3 Mounting.

It may be necessary to adjust the position of the

air outlet louvres to provide the correct airflow

across the door opening. This can be done by

first loosening the four locking pins located two

at each end of the louvres (arrowed, Fig. A),

then loosening the intermediate locking Allen

pins (arrowed, Fig. B). The louvres can now be

moved to the desired position and the locking

pins re-tightened.

Note: The AB 225 model has two pairs of

intermediate locking Allen pins, whereas the

AB 175 model only has one pair.

Fig. A

Locking pins

Diagram 2.

Locking Allen pins

Fig. B

Doc No. 702105 Page 6 of 16

Diagram 3: Mounting method (single air curtain)

Cantilever brackets

(not supplied)

FRONT VIEW (SINGLE AIR 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.

Doc No. 702105 Page 7 of 16

5.2 Control panel.

The panel incorporates an on/off selector switch,

a high/low fan speed selector switch, and a heat

on/off selector switch.

Panel operation is described in section 10 of this

manual (user instructions).

A customer specific control panel wiring

diagram will be supplied within each air

curtain control panel.

5. Wiring Details.

Doc No. 702105 Page 8 of 16

6. Servicing.

These appliances should be serviced annually by a competent person to ensure safe and

efficient operation. In exceptionally dusty or polluted conditions more frequent

servicing may be required. The manufacturer offers a maintenance service. Details available

on request. Isolate electricity supplies before commencing any work.

Cross point

screwdriver

6.1 Tools required.

The following tools and equipment are

recommended to complete the tasks laid out in

this manual.

Suitable alternative tools may be used.

Small flat head

screwdriver

Allen key set Adjustable

spanner

10mm spanner

13mm spanner

Soft

brush

6.2 Air outlet louvres.

The air outlet louvres should be cleaned with a

soft brush. Check that the louvres are 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 Fig.2.

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, if necessary, as

described in section 7.1.

6.4 Elements

Remove element housing as described in

section 7 (parts replacement). Clean off any

dust or deposits with a soft brush.

Visually inspect element coils for signs of

discolouration, burning, sagging etc.

6.5 Electrical.

Isolate electricity supplies before

commencing any work.

Check condition and tightness of all terminations

in control panel.

Remove the fan/elements terminal box cover

located on top of the air curtain (Fig.1), and

repeat above procedure for the fan/elements

terminations.

Check that the plug/socket connection to each

fan (inside the unit) is tight and that the cable is

in good condition. Switch control panel on and

check air curtain operation in each selector

switch position (heat on/off, low//high speed).

Fig.1

Doc No. 702105 Page 9 of 16

All servicing/maintenance work on this air

curtain should be carried out by suitably

qualified person. Before commencing any work

please ensure that the electricity supplies are

turned off.

7.0 Tools required.

7.1 Air distribution fans.

The air distribution fans can be accessed by

removing the three screws along the bottom

edge of the air inlet grille (Fig.2), and the

retaining screws securing the hinged lid on the

underside of the air curtain next to the louvres

( Fig.3).

7. Parts Replacement.

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 individual fans can be removed it will be

necessary to remove the fan closure plate.

Remove the retaining screws around the

perimeter of the plate. (See Figs.5/6) The plate

can now be removed.

Fig.2

Allen key set Adjustable

spanner

Cross point

screwdriver

10mm spanner 13mm spanner

Doc No. 702105 Page 10 of 16

7. Parts Replacement cont.

Fig.7

Fig.8

Fig.9

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 now be

removed as shown in Fig.8, and the fan

removed from the air curtain downwards.

CAUTION: these fan units are heavy.

7.2 Heating element removal (see Diagram 7)

7.2.1 To gain access to the elements first

remove the 9 screws (A) retaining the element

housing.

Diagram 7

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