Biddle DF S-100-W-F, DF L-200-A-R, DF M-150-E-C User Manual

Manual

Comfort Air Curtain

Model DF

Version 3.0
Original Manual

a

English

en

COMFORT AIR CURTAIN

. . . Contents

1 Introduction 3

1.1 About this manual 3

1.2 How to read this manual 3

1.3 About the unit 4

1.4 Restrictions on use 7

1.5 Safety instructions 8

2 Installation 10

2.1 Inspection on delivery 10

2.2 General working method 10

2.3 Hanging the unit up 12

2.4 Connecting the unit to the central heating system 14

2.5 Connecting the unit to the mains supply 15

2.6 Installing the control panel and external controls 19

2.7 Finishing the unit 26

2.8 Switching on and checking operation 28

3Operation 29

3.1 General 29

3.2 Starting and stopping 29

3.3 Adjusting the strength of the air curtain 30

3.4 Adjusting heating 30

4 Maintenance 32

4.1 Cleaning the unit 32

4.2 Scheduled maintenance 32

5Errors 33

5.1 Resolving simple problems 33

5.2 Remedying faults 34

6Service 38

6.1 Access 38

6.2 Fuses 41

6.3 High-limit thermostat 42

6.4 Biddle control cable composition 42

7Dismantling 43

8Addresses 45

Keywords 46

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1. . Introduction

Note:

Caution:

Warning:

Danger:

1.1 About this manual

This manual describes the installation, operation and mainte­nance of the comfort air curtain model DF. The manual also
provides instructions and information about servicing.

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1.2 How to read this manual

1.2.1 Designations used in the manual

The following symbols are used in the manual:

n Refers to an important section in the text.

c If you do not carry out the procedure or action

correctly, you may cause damage to the unit.

Follow the instructions precisely.

w If you do not carry out the procedure or

action correctly, you may cause physical injury
and/or damage.

Follow the instructions precisely.

d Is used to designate actions that are not

permitted.

Ignoring this prohibition may lead to serious
damage or to accidents resulting in physical
injury.

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INTRODUCTION COMFORT AIR CURTAIN

1.2.2 Symbols used on the unit and in the manual

The following symbols indicate possible risks or hazards. The
same symbols will also be found on the unit.

S

YMBOL DESCRIPTION

w You have accessed a section of the unit containing components which carry

a voltage.

Access restricted to qualified maintenance staff only.

Caution is required.

w This surface or component may be hot. Risk of burns on contact.

1.3 About the unit

1.2.3 Related documentation

In addition to this manual, the following documentation is also
supplied with the unit:

• wiring diagram for installation and servicing.

1.3.1 Application and operation of the air curtain

The air curtain is designed to separate indoor and outdoor cli­mates. The unit draws air from the room and discharges it,
either heated or not, across the width of the doorway. The air
curtain removes the undesired effects of an open door by
either reducing the exchange of indoor and outside air, by
heating the entering air, or a combination of the two.

Mounting types

The free-hanging model (type F) is designed for free, visible
installation above the door.

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DF MANUAL INTRODUCTION

Warning:

The recessed model (type R) is designed for integration into a
false ceiling or into a cove, with the inlet opening possibly at
some distance from the unit.

The cassette model (type C) is designed for installation above
a false ceiling, with the inlet opening close to the unit and with
easy access to the unit.

Other versions and intended use

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Upon request, we can supply versions for non-standard appli­cations.

w Applications other than those described

above are deemed to be ‘usage other than for
the intended purpose’. Biddle is not liable for
damage or loss resulting from usage other
than for the intended purpose. Usage for the
intended purpose also entails observance of
the instructions in this manual.

1.3.2 Type designation

Type designations, when combined, form a unit type code, e.g.:

DF S-100-W-F
DF M-150-E-C
DF L-200-A-R

Different combinations may arise.

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INTRODUCTION COMFORT AIR CURTAIN

Explanation of the type code

T

YPE CODE

ELEMENT

product series DF air curtain

capacity S small

length 100, 150, 200, 250 discharge length (cm)

battery type W hot water

model F free-hanging model

DESIGNATION MEANING

Mmedium

L large

E electrical

A zonder verwarming

(Ambient)

C cassette model

R recessed model

1.3.3 Type plate

The type plate is located on the top of the unit.

Designations on the type plate

DESIGNATION MEANING

Type complete type code of the unit

o

N

serial number, production week and
year

Mweight of unit

Medium medium

p

max

maximum permissible operating pres­sure

U power supply voltage

I

max

P

motor

P

heating

max. current

max. power consumption by fans

For electrically heated models:

max. power consumption by heating
element

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1.3.4 CE declaration

The unit is compliant with the applicable CE standards. The
complete CE Declaration of Conformity can be found at:
www.biddle.info.

DF MANUAL INTRODUCTION

Note:

1.3.5 Modifications and changes

Without the approval of Biddle, no changes or modifications
may be made to the unit that could adversely affect safety. The
CE declaration is no longer valid if the unit has been modified
or changed in any way.

1.3.6 Components and accessories

For all models:

• control panel (supplied separately – can be used for multi­ple units)

• control cable – Type RJ4 (supplied separately)

• optional:
door contact switch (supplied separately)

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1.4 Restrictions on use

For water-heated models (Type W):

• optional:
double-sided valve for water-side control (sold separately)

n The unit is fitted with a three-way valve as standard.

For recessed models (Type R):

• telescopic discharge duct (supplied)

• optional:
inlet grille for installation in alcove (supplied separately)

1.4.1 Field of application

• The unit may only be used indoors.

• The unit is suitable only for dry and non-dusty environ­ments.

• The unit may not be used in an environment in which cor­rosive or chemically aggressive gases or vapours are pre­sent.

• The unit is suitable for ambient temperatures from 0°C to
40°C.

These restrictions also apply to the control unit and/or the
control panel.

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Danger:

Warning:

Warning:

Warning:

INTRODUCTION COMFORT AIR CURTAIN

1.4.2 Required skills

• You must be technically qualified to install, maintain or ser­vice the unit in accordance with local legislation, regula­tions and standards.

• For operation in daily use, no special skills are required.

• The unit is not intended for use by children or people with
an intellectual disability.

d Do NOT attempt to install, maintain or

service the unit unless you are adequately
qualified to do so.

1.4.3 Application limitations with water heating

1.5 Safety instructions

Application limitations for units with water heating

Heating medium water with

max. 20% glycol

Maximum water
flow-path

Max. discharge
temperature

Maximum operating pressure 8 bar

1.5.1 Safety in use

W2 90/70 °C

W4 70/50 °C

types S/M 55 °C

type L 45 °C

w Do not put any objects into the inlets and

outlets.

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w Do not obstruct the unit’s inlets or outlets.
w The upper surface of the unit becomes hot

during operation.

DF MANUAL INTRODUCTION

Caution:

Danger:

Warning:

Danger:

Caution:

Warning:

c In exceptional situations, water may run out of the

unit. Therefore, do not place anything under the unit
that could be damaged as a result.

1.5.2 Safety issues relating to installation, mainte­nance and servicing

d The unit may only be opened by qualified

technical staff.

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w Perform the following actions before opening

the unit:

1. Switch the unit off,using the control panel.

2. Wait until the fans have stopped.

d The fans may continue rotating for a while.

3. Allow the unit to cool down.

c The heat exchanger or, as the case may be, the

heating elements, can get very hot.

4. Disconnect the mains supply (remove plug from the power

socket orswitch off the isolation switch).

5. For water-heated models:

shut off the central heating feed (if possible).

w The fins of the heat exchanger are sharp.

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Warning:

Warning:

2. . Installation

w Installation activities may only be performed

by technical staff qualified for this purpose.

w Before starting installation: read the safety

instructions.

See also:

1.5 "Safety instructions" on page 8

2.1 Inspection on delivery

2.2 General working method

• Check the unit and the packaging to ensure that they have
been delivered in good order. Notify the driver and the
supplier immediately if any shipping damage is detected.

• Ensure that all components are present. Notify supplier of
any missing parts immediately.

2.2.1 Sequence of operations

Biddle recommends working as follows when installing the
unit:

1. Hang the unit up.

2. For water-heated models (type W):
connect the unit to the central heating system.

3. Connect the unit to the mains supply.

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4. Install the control panel and (any optional) connections to
external controls.

5. Complete the installation of the unit.

6. Switch the mains supply on and check that the unit is
working properly.

DF MANUAL INSTALLATION

Note:

Note:

General instructions

Some parts of this section only apply to certain models.
Where this is the case, it will be indicated. If no specific model
is referred to, then the description applies to all models.

n Make sure that you perform all installation

operations that are applicable to your unit.

Check the type plate and consult the manual if in
doubt about the model or type of your unit.

n During the installation period, protect the unit

against damage and penetration of dust, cement, etc.
You can, for instance, use the packaging for
protection.

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See also:

2.3 "Hanging the unit up" on page 12

2.4 "Connecting the unit to the central heating system" on
page 14

2.5 "Connecting the unit to the mains supply" on page 15

2.6 "Installing the control panel and external controls" on
page 19

2.7 "Finishing the unit" on page 26

2.8 "Switching on and checking operation" on page 28

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Warning:

Warning:

INSTALLATION COMFORT AIR CURTAIN

2.3 Hanging the unit up

2.3.1 Determining the location of the unit

• Make sure that the structure from which the unit is about
to be suspended can bear at least 4 times the weight of the
unit. The unit’s weight is indicated on its type plate.

• Note the following dimensions:

- The unit must be at least as wide as the door opening

(dimension b).

- Position the unit as near to the doorway as possible.

- Position the unit as close to the top of the door as pos-

sible.

w The minimum installation height (dimension

h) is 1.8 m.

- If the unit is mounted against the ceiling: Make

sure that air can enter the unit freely above the unit.

w The top of the unit may get hot. The unit

should be placed with at least 25 mm ceiling
clearance (dimension x).

See also:

1.3.3 "Type plate" on page 6

2.3.2 Attaching the wall consoles (accessory)

Attach the wall consoles in accordance with the instructions
supplied.

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DF MANUAL INSTALLATION

2.3.3 Suspending and securing the unit

1. Position the four M8 screw threads. Make sure the
threaded rods are perpendicular.

Dimensions for free-hanging and recessed units

SIZE TYPE DIMENSIONS

a all DF F, R as needed

b all DF F, R 35 mm

c all DF F, R 290 mm

d DF 100-F, 100-R 896 mm

DF 150-F, 100-R 1396 mm

DF 200-F, 200-R 1896 mm

DF 250-F, 250-R 2396 mm

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Dimensions of hole and suspension for cassette model

SIZE TYPE DIMENSIONS

a DF 100-C 1012 mm

DF 150-C 1512 mm

DF 200-C 2012 mm

DF 250-C 2512 mm

b all DF C 705 mm

c DF 100-C 937 mm

DF 150-C 1437 mm

DF 200-C 1937 mm

DF 250-C 2437 mm

d all DF C 641 mm

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Caution:

INSTALLATION COMFORT AIR CURTAIN

2. Screw a lock nut 1 onto each threaded rod.

3. Attach the unit to the threaded rods.

4. Secure the unit by tightening the lock nuts 1.

2.4 Connecting the unit to the central heating system

Only for water-heated models (type W)

See also:

6.1.2 "Opening the unit" on page 39

2.4.1 Special points

c The central heating system’s supply and return pipes

must be attached to the correct corresponding
connectors 1. On the unit, the directions are
indicated with arrows.

• Keep the connectors 1 in place by using pliers when con-

necting the pipes.

• Insert a valve and a venting valve on both pipes close to
the unit.

Application limitations for units with water heating

Heating medium water with max. 20%

glycol

Maximum
water flow­path

Max. dis­charge temper­ature

Maximum operating pressure 8 bar

W2 90/70 °C

W4 70/50 °C

types S/M 55 °C

type L 45 °C

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DF MANUAL INSTALLATION

Warning:

Warning:

2.4.2 Frost protection

Take the following precautions if you install the unit in a room
where frost may occur:

• Ensure constant circulation of the water at the right tem­perature;

• Add up to 20% glycol to the water when the unit is not in
operation during the wintertime;

• Or bleed the system and the unit.

2.4.3 Connecting the water-side control

The unit is fitted as standard with a connected three-way valve
inside the unit.

If a two-way valve is opted for (accessory), the valve is sup­plied separately. In that case, connect the valve as follows:

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1. Connect the unit and the two-way valve to the central
heating system as shown in the diagram.

2. Connect the valve’s plug to the unit’s plug.

3. Open the valve manually using the handle (Position ‘MAN’).

4. Fill and bleed the system.

5. Check the connections for leakage.

6. Return the handle to its starting position
(Position ‘AUTO’).

2.5 Connecting the unit to the mains supply

2.5.1 Special points

For all models:

w The unit must be earthed.
w The unit must be connected in accordance

with the applicable local requirements.

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Warning:

INSTALLATION COMFORT AIR CURTAIN

For water-heated models and models without heating:

• The unit can be switched on and off from the power sup­ply. This requires that the control panel be configured for
this purpose.

• If, on delivery, the unit is equipped with a mains sup-

ply cable with plug:

Ensure that an earthed power socket is available no fur­ther than 1.5 m from the connection side of the unit.

• If the unit is not equipped with a power supply cable:
Connect the unit to the mains using a power cable (not
supplied). Maximum ratings are specified on the type plate.

It must be possible to disconnect the unit from the mains
supply. You may choose to use either a plugged mains
power cable or an isolation switch.

For electrically heated models:

w Do not turn unit ON/OFF at its power supply.

Use the control panel.

• Connect the unit to the mains using a power cable (not
supplied). Maximum ratings are specified on the type plate.

• An isolation switch (not supplied) must be fitted between
the unit and the mains supply. This switch must:

- be all-pole;

- have a contact separation of at least 3 mm;

-be able to be secured;

- be positioned no farther than 4 m from the connection

side of the unit.

See also:

1.3.3 "Type plate" on page 6

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DF MANUAL INSTALLATION

Warning:

Warning:

Note:

2.5.2 Fuse ratings

w Each unit must be fused in accordance with

the table below.

w Electrical models (type E) must each be

individually fused in accordance with the table
below.

Fuse ratings

AXIMUM AMPERAGE ON

M

TYPE PLATE L1, L2 OR L3

≤ 10A 16A

≤ 20A 25A

≤ 25A 35A

≤ 35A 50A

≤ 50A 63A

≤ 65A 80A

≤ 80A 100A

≤ 102A 125A

AXIMUM FUSE VALUE A

M

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n A single fuse may only be used for multiple units if

they draw a total current of less than 10A.

2.5.3 Connecting the unit

For water-heated models (type W) and models with­out heating (type A):

1. Insert the plug into the power socket only after installa­tion has been completed.

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Warning:

Caution:

INSTALLATION COMFORT AIR CURTAIN

For electrically heated models (type E):

w Only connect the unit if you are qualified to

work on three-phase power systems.

Make sure that the mains supply group with
which you are working has been turned off.

1. Fit an isolation switch between the mains supply and the
unit, and connect this to the mains supply.

2. Open the unit.

3. Feed the mains power cable through the cable gland 1.

4. Connect the cable to the unit’s power terminal 2 as
shown in the wiring diagram.

5. Connect the mains power cable to the isolation switch.

c Do not switch on the mains supply yet.

See also:

6.1.2 "Opening the unit" on page 39

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DF MANUAL INSTALLATION

Note:

Note:

2.6 Installing the control panel and external controls

2.6.1 Special points regarding the control panel

Posit ioning

You may fasten the control panel either to the wall or to a
standard junction box.

Cabling

n Take the following into account, otherwise errors

may occur:

- The length of the control cable between the control
panel and the unit connected may not exceed 30 m
.

- Keep control cables away from electromagnetic fields
and interference sources such as high-voltage cables
and fluorescent light starters.

- Lay control cables out straight or roll them in a bifi­lar coil by folding cables in half before rolling them.
As a result, the magnetic fields will cancel each other
out to an important extent.

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n Use Biddle control cables only(Type RJ4). Standard

modular telephone cable is NOT suitable.

Multiple units operated from a single control panel

• A maximum of 8 units can be connected to a single con­trol panel.

• Units are daisy chained using Biddle control cables and
connectors

• The total length of the control cables is not to exceed
30m(98ft). If the distance is too great, an additional con­trol panel must be connected.

E and G.

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INSTALLATION COMFORT AIR CURTAIN

Units with two control circuit boards

Only for the following types: DF S-250-E, M-250-E, L-250-E

These units have two control circuit boards that each control
a part of the unit. On delivery, the control circuit board on the
connection side has been configured as master.

You can connect one or more of these units to a single con­trol panel in combination with other units. The following
applies in this regard:

• A unit with two control circuit boards counts as two units.

• A unit with two control circuit boards is always the mas­ter unit. Units with a single control circuit board must be
configured as normal units.

• If several units with two control circuit boards are con­nected, then one of these units is configured as the master
unit. All control circuit boards in all other units must be
configured as normal units.

• The control panel and the external control components
must always be connected to the master unit.

2.6.2 Control panel settings

Optional

Several dip switches are located inside the control panel.
These allow the control panel to be configured.

Control panel settings

NO.

1 unit remains turned off

POSITION OFF
(

FACTORY SETTING)

after supply voltage
interruption

OSITION ON

P

unit continues running in
the same mode after
supply voltage interrup­tion

2 fans continue running as

long as the unit is turned

fans do not run if heating
is not required

on

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DF MANUAL INSTALLATION

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N

3 heating is turned OFF

POSITION OFF

O.

(FACTORY SETTING)

once the set room tem­perature has been

POSITION ON

heating is always on as
long as the unit is turned
on

reached

4 display heating settings

using multiple LEDs

display heating settings
with only one LED (does
not affect operation)

2.6.3 External control input

A door switch and/or building management system can be
connected to the input.

• The connector is located on the control circuit board
(INHIBIT connector). This connector has been fed through
to Connector 1 on the outside of the unit.

• This connector is fitted with a bridge on delivery.

• The input is suitable for potential-free switches.

Working of the input

contact closed (or bridged) unit operates normally

contact open unit remains off

resistor across contact
(3.3 kΩ)

unit working, but heating
remains turned off (summer
mode)

See also:

2.6.5 "Unit settings" on page 22

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INSTALLATION COMFORT AIR CURTAIN

2.6.4 Fault signal output

A building management system (BMS) can be connected to the
output.

• The connector is located on the control circuit board
(HEALTHY connector).

Output operation

24 VDC unit operates normally

no power sup­ply voltage

2.6.5 Unit settings

temperature cut-out has turned the
heating off or the unit is not being pow­ered

Optional unless otherwise stated

Several dip switches 1 are located on the unit’s control cir­cuit board. These allow the unit to be configured.

Control circuit board settings

NO.

(

FACTORY SETTING)

1 fan and heating mode

independently adjustable

POSITION ON

high heating setting disa­bled for low and medium

OSITION OFF

P

fan settings

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DF MANUAL INSTALLATION

POSITION OFF

N

O.

(FACTORY SETTING)

2 switch off via control panel:

fans continue running for
two minutes after shut­down (in low setting) for
cooling purposes

n If the heating is

switched off due
to resistance
over the INHIBIT
contact, the fans
will stop immedi­ately.

switch off via INHIBIT:

• the fans first con­tinue to run for 15
secs (in the current
setting)

• the fans will then
continue running for
two minutes (in low
setting) for cooling
purposes

POSITION ON

d not permitted

for electrically
heated units

switch off via control panel:

fans stop immediately

d not permitted

for electrically
heated units

switch off via INHIBIT:

the fans continue to run
for 15 secs (in the cur­rent setting)

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n If the heating is

switched off due
to resistance
over the INHIBIT
contact, the fans
will stop after
the first 15 sec­onds of post­rotation time.

3 unit operates normally unit configured as a mas-

ter unit

4 only heating is turned off

when the high-limit ther­mostat activates

heating AND fans shut
down when the high-limit
thermostat activates

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INSTALLATION COMFORT AIR CURTAIN

Master settings

Only if multiple units have been connected to a single
control panel

all units config­ured as normal
units

external control
input

automatic tem­perature control

2.6.6 Mounting and connecting control panel

1. Open the control panel.

2. Feed the control cable through an opening in the rear
plate.

only connected
unit responds

each unit is
independently
controlled

one unit config­ured as a master
unit

all units follow
the master

all units are
controlled by
the master

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3. Attach the rear plate to the wall.

DF MANUAL INSTALLATION

4. Secure the cable in a tension-free state.

The cable should protrude by approx. 9 cm.

5. Optional:
Set the dip switches on the front plate.

6. Attach the control cable’s connector to the PCB.

7. Replace the front plate onto the rear plate.

See also:

2.6.2 "Control panel settings" on page 20

6.4 "Biddle control cable composition" on page 42

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2.6.7 Connecting the control to the unit

The control panel is connected to one of the two modular
connectors on the unit (indicated by the symbols

Both sockets are identical.

E andH).

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INSTALLATION COMFORT AIR CURTAIN

2.7 Finishing the unit

2.7.1 Edge finishing

Only for cassette model (type C):

Make a hole in the ceiling for the unit.

Dimensions of hole and suspension for cassette model

SIZE TYPE DIMENSIONS

a DF 100-C 1012 mm

DF 150-C 1512 mm

DF 200-C 2012 mm

DF 250-C 2512 mm

ball DF C 705 mm

c DF 100-C 937 mm

DF 150-C 1437 mm

DF 200-C 1937 mm

DF 250-C 2437 mm

dall DF C 641 mm

8. Attach the angle sections using the screws supplied along
the unit’s edges.

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DF MANUAL INSTALLATION

Let op:

B

C

2.7.2 Attaching discharge section

Only for recessed models (Type R):

1. Make a hole in the ceiling for the discharge.

Discharge section hole dimensions

SIZE TYPE DIMENSIONS

aR90 mm

b 100-R 970 mm

150-R 1470 mm

200-R 1970 mm

250-R 2470 mm

2. Attach the two angle sections 1 to the unit along the dis-

charge openings’ edges using the screws supplied.

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3. Extend the telescopic discharge grille 2 into the unit’s dis-

charge opening until it reaches the required height.

4. Attach the discharge duct to the angle sections 1 using

the screws supplied.

c For the unit to work properly, it is essential that

there are sufficient openings in the alcove or ceiling
for air to enter the unit.

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INSTALLATION COMFORT AIR CURTAIN

2.8 Switching on and checking operation

For all models:

1. Close all units.

2. Check the following connections:

- power supply;

- control cable(s) between control panel and unit(s);

- If applicable:

external control components.

3. Switch the mains supply onand/or put the plug into the
power socket for all connected units.

4. Start up the air curtain using the control panel.

5. Check that air is being blown out of all units across their
full width.

For water-heated models:

1. Check whether the heat exchanger and the control valve
have been connected correctly.

2. Make sure that the central heating system has been turned
on.

3. Turn the heating on using the control panel.

4. Feel whether the air stream is getting hotter for all con­nected units. This may take some time.

5. Vent the heat exchanger if necessary.

For electrically heated models:

1. Turn the heating on using the control panel.

2. Feel whether the air stream is getting hotter for all con­nected units across their full width.

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3. . Operation

Note:

3.1 General

All regular features can be operated from the control panel.
The control panel allows you to:

• start and stop the air curtain

• set the required heating capacity

• set the required room temperature

• turn the heating on and off

• adjust the air curtain’s airflow rate

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3.2 Starting and stopping

If multiple units are connected to a single control panel:

The settings on the panel are the same for all units.

Press Button 1 repeatedly to start and stop the air curtain,
and to select the required temperature control mode:

• The air curtain is running in manual mode –
is on.

• The air curtain is running in automatic mode –
is on.

• The air curtain is not running – all LEDs are off.

MANUAL LED

AUTO LED

n The unit continues to run at a low fan speed after it

has been turned off to allow it to cool down

See also:

3.4.1 "Manual temperature control" on page 30

3.4.2 "Automatic temperature control" on page 31

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Note:

Caution:

OPERATION COMFORT AIR CURTAIN

3.3 Adjusting the strength of the air curtain

You can select three air curtain airflow settings:

• Button 4: low fan

• Button 5: medium fan

• Button 6: high fan

n To achieve maximum climate separation for

minimum energy consumption, Biddle recommends
selecting the lowest setting at which no draughts
occur.

3.4 Adjusting heating

3.4.1 Manual temperature control

In manual mode, heating can be set to full or reduced capac­ity, or turned off.

• Press Button 2 to reduce the heating setting by one level.

• Press Button 3 to increase the heating setting by one

level.

Control panel LEDs indicate the air curtain’s heating setting.

Room temperature when heating

c Heating may not be used when the room

temperature is higher than 25°C, otherwise faults
may occur.

Heating needs to be turned off manually if temperature set­tings are being adjusted manually.

en-30

Heating is turned off automatically when using automatic tem­perature control.

See also:

3.4.3 "Turning off heating" on page 31

DF MANUAL OPERATION

3.4.2 Automatic temperature control

In automatic mode, the unit measures the air inlet tempera­ture and automatically selects the required heating setting to
adjust the air temperature to the configured level.

• Set the required temperature using Buttons 2 and 3

The LEDs display the temperature in a range from 18 °C to
25 °C. This temperature is measured at the unit’s air inlet and
may deviate slightly from actual room temperature.

3.4.3 Turning off heating

en

You can turn off heating to achieve climate separation without
actually heating the air, e.g. if indoor air is being cooled and is
colder than outside.

This can be configured in both manual and automatic modes.

To t u r n h e a t i n g o f f :

• Press Button 2 until blue LED 7 illuminates.

To turn heating on:

• Press Button 3: the blue LED turns off and one or more
of the yellow LEDs turns on.

Manual version 3.0 (21-11-2017) en-31

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Caution:

4. . Maintenance

4.1 Cleaning the unit

4.2 Scheduled maintenance

You can clean the exterior of the unit with a damp cloth and a
domestic cleaning agent. Do not use any solvents.

c Make sure that no water runs into the unit.

It is recommended to have the following inspection and main­tenance activities performed annually by an installer or other
technical expert.

• Check the casing, the suspension or mounting structure,
and the securing of the unit.

• Check that the heat exchanger or the electrical heating
elements are clean. Settled dust may cause an unpleasant
smell.

Carefully remove dust with a vacuum cleaner.

• Check all connections of the cabling.

• Check the operation of the fans.

en-32

5. . Errors

Danger:

Warning:

en

d All work on the inside of the unit may only be

carried out by personnel who are technically
qualified to do so.

w Before you begin: read the safety instructions.

See also:

1.5 "Safety instructions" on page 8

5.1 Resolving simple problems

If you suspect a fault, first try to resolve the problem, using
the table below. You need not be an expert for this.

Solutions to simple problems

P

ROBLEM PROBABLE CAUSE WHAT TO DO

There is a draught Air curtain is turned off. Turn the air curtain on.

Air curtain is adjusted too low. Switch the air curtain to a higher

operating strength.

Air curtain is adjusted too high. Turn the air curtain down.

The unit’s heater has been turned
off.

The heater is adjusted too low. Turn the heater up.

It is too hot. Space heating and air curtains are

colletively producing too much
heat.

It is too cold. Room is too cold. 1. Turn space heating up.

It is too noisy. Air curtain is at highest setting. Turn the unit down.

Turn the heater on.

1. Turn space heating down.

2. Turn the unit down.

3. Turn the heater down.

2. Turn the unit up.

3. Turn the heater up.

Manual version 3.0 (21-11-2017) en-33

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ERRORS COMFORT AIR CURTAIN

P

ROBLEM PROBABLE CAUSE WHAT TO DO

The unit is not working and the
control panel LEDs are off.

The air curtain is switched off but is
still working.

The unit is switched off. Turn the unit on.

The unit has no power supply. Check the power supply:

• is the plug in the socket?

• Is the isolation switch on?

• is there a voltage present?

The unit cools off automatically. This is not a fault. The unit will nor-

mally shut down automatically
within two minutes.

See also:

3.2 "Starting and stopping" on page 29

3.3 "Adjusting the strength of the air curtain" on page 30

3.4 "Adjusting heating" on page 30

5.2 Remedying faults

If you suspect a fault:

1. Check whether the problem can be easily resolved.

2. Try to resolve the problem using the table below. Techni­cal expertise is needed for this.

3. If you have identified a fault, and the previous section does
not provide a solution, then contact the supplier.

en-34

DF MANUAL ERRORS

Fault rectification (for qualified technical staff only)

PROBLEM POSSIBLE CAUSE RESOLUTION

The control panel works normally
but the unit does not respond.

The unit is not working and the
control panel LEDs are off.

One fan does not work. The fan is defective or not receiving

Fans are not working at a particular
speed level.

The power supply to the fans is cut. 1. Check the fuses on the control

circuit board.

2. Check wiring between the con­trol circuit board and the fans.

The connection between the con­trol panel and the control circuit
board is not correct.

The contact on the external control
input is open.

The unit is not receiving power. Check power supply connections,

The connection between the con­trol panel and the control circuit
board is not correct.

The control circuit board is not
working.

The control panel is defective. Check the control panel by con-

a power supply.

The connection at the particular fan
speed level is faulty.

1. Check the control cable.

2. Check wiring between
Connectors
unit’s control circuit board.

1. If no external control is con-

nected:

Check the bridge at the input.

2. If an external control has

been connected (door con­tact switch or BMS):

Check the operation of the con­trol component.

3. Check wiring and connection of
control components to the
input.

4. Check wiring between the input
and the control circuit board
(INHIBIT connector).

wiring and fuses.

1. Check the control cable.

2. Check wiring between
Connectors
unit’s control circuit board.

1. Check the control circuit board’s
fuse.

2. Check the power supply cable.

3. Replace the control circuit
board.

necting another unit. Replace the
control panel if it is not working.

1. Check the wiring of the fan.

2. Replace the fan.

Check the fans’ wiring.

E and H and the

E and H and the

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ERRORS COMFORT AIR CURTAIN

PROBLEM POSSIBLE CAUSE RESOLUTION

Not all connected units are working
(or only partially).

If several units are connected to
a single control panel:

The units (or part of a unit) are not
responding uniformly to the exter­nal control (door contact switch or
BMS).

The unit is blowing out cold air. For water-heated units:

The control panel is not communi­cating with one or more connected
units (or with one of the control
circuit boarda in a dual-control cir­cuit board unit).

The master unit (or the master
control circuit board in a dual-con­trol circuit board unit) has not been
configured properly.

The contact on the external control
input is open.

The unit is not being supplied any
hot water.

1. Check that power is supplied to
all connected units.

2. Check the control cables:

• are they connected and free
from breaks?

• are they stretched out or
rolled up neatly? (folded double
before being rolled up)

• are they shielded from
magnetic fields?

3. Check the control circuit board’s
fuses in each connected unit.

4. Check wiring between
Connectors
control circuit board(s).

Check that the unit to which the
external control has been con­nected has been configured as the
master.

For dual-control circuit board
units:

Check whether the control circuit
board on the connection side has
been configured as the master.

Check the input bridges on the
units to which no external controls
have been connected.

For dual-control circuit board
units:

Check the input bridge on the sec­ondary control circuit board.

1. Check the central heating sys­tem.

2. Check whether the valve is
allowing hot water to pass.

3. Check valve drive and inlet tem­perature sensor wiring and con­nectors.

4. Take the drive from the valve
and check the interior for
mechanical operation and
defects.

E and H and the

en-36

DF MANUAL ERRORS

PROBLEM POSSIBLE CAUSE RESOLUTION

The unit (or part of the unit) is
blowing cold air.
The LEDs on the control panel are
flashing.

Discharge air is not hot enough. For water-heated units:

The unit continues to blow hot air. For water-heated units:

The unit always blows cold air in
automatic mode.

If multiple units have been con­nected to a single control panel:

The units warm up unevenly in
automatic mode.

For electrically heated units:

The temperature cut-out has
turned the unit (or part of the unit)
off to prevent overheating.

w This may indicate a seri-

ous fault that may be
hazardous.

This fault can also occur if the unit
has been powered down for a short
while.

The supply water temperature is
too low.

For electrically heated units:

One or more phases on the power
supply have tripped out.

The valve has been opened manu­ally.

The temperature sensor is not
working.

The temperature is set indepen­dently in each unit.

1. Check and reset the tempera­ture cut-out.

2. Check the fans. If one or more
fans do not work, check:

• the fan wiring;

• control circuit board connec­tions

• control circuit board fuses

3. If these are in order, then
replace the fan.

Raise the central heating system’s
water temperature.

1. Check the power supply’s fuses
and electrical connections.

2. Check the control thermostat.
These should be set to 60°C.

Turn the handle on the valve to the
‘AUTO’ position.

1. Check Connector J3 on the con­trol circuit board.

2. Replace the sensor.

Configure one unit as a master.

en

See also:

2.6.2 "Control panel settings" on page 20

2.6.3 "External control input" on page 21

2.6.5 "Unit settings" on page 22

2.6.1 "Special points regarding the control panel" on page 19

6.2 "Fuses" on page 41

6.3 "High-limit thermostat" on page 42

Manual version 3.0 (21-11-2017) en-37

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Warning:

Warning:

6. . Service

w Servicing activities may only be carried out by

personnel who are technically qualified to do
so.

w Before you begin: read the safety instructions.

See also:

1.5 "Safety instructions" on page 8

6.1 Access

6.1.1 Removing the front panel

For free-hanging models only:

1. Remove the locking bolts 1 from the front panel 2.

2. Remove the front panel 2 from its suspension hooks 3.

en-38

DF MANUAL SERVICE

6.1.2 Opening the unit

For free-hanging models (type F) and recessed mod­els with electrical heating (types E-R) and models
without heating (types A-R)

1. Remove the front panel, if necessary.

2. Remove the inlet grille 4.

For cassette models (type C)

1. Push the inlet grille’s left- and right-hand latches towards
each other. Use a screwdriver to do this.

en

2. Twist the inlet grille open and allow to hang freely.

3. Remove the inlet grille, if necessary, by opening the latches
on the other side.

Manual version 3.0 (21-11-2017) en-39

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Caution:

SERVICE COMFORT AIR CURTAIN

For all models

1. Remove the screws along the edge of the inspection panel.

2. Pull the panel forward a little and remove it.

c The entire panel comes free once pulled forward –

make sure it does not fall.

6.1.3 Removing the control circuit board

With all units:

1. Open the unit.

For water-heated units and units without heating:

1. Remove the screws 1 on the top of the unit.

en-40

DF MANUAL SERVICE

2. Remove the control circuit board 2.

3. Disconnect all unit-connected connectors and grounded
connections from the control circuit board.

For electrically heated units:

en

6.2 Fuses

1. Disconnect all connectors and earth contacts connecting
the unit and control circuit board 1.

2. Remove the control circuit board.

See also:

6.1.2 "Opening the unit" on page 39

The unit’s control circuit board has two fuses – 1 and 2. Val­ues have been marked on the PCB.

Manual version 3.0 (21-11-2017) en-41

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Note:

Note:

Note:

SERVICE COMFORT AIR CURTAIN

6.3 High-limit thermostat

For electrically heated models only:

The unit has been fitted with a high-limit thermostat to pre­vent overheating.

Units with a length of 250 cm have two high-limit thermo­stats. These each protect a section of the unit and can oper­ate independently of one another.

6.3.1 Resetting the high-limit thermostat

1. Turn the unit off.

2. Allow the unit to cool down for 10 minutes.

3. Push back the high-limit thermostat pin 1.

n On models with a length of 250 cm, push back the
n If necessary, remove the front panel.

4. Turn the unit on.

5. Check the operation of the fans.

n Contact the installer if this error occurs repeatedly.

See also:

6.1.1 "Removing the front panel" on page 38

6.4 Biddle control cable composition

The control cable for the control system is constructed as fol­lows:

second high-limit thermostat 2 as well.

en-42

• The plugs are modular, type 4P4C connectors.

• Connectors are untwisted, i.e. at both ends of the cable,
cores are connected to the same electrode.

7. . Dismantling

The dismantling of the installation and the handling of the
coolant, oil and other components must be carried out by a
qualified fitter in accordance with the relevant local and
national legislation and regulations.

Pursuant to EU legislation, used electrical and electronic appli­ances must be collected for recycling. By ensuring that this
product is disposed of in the correct manner, you are helping
to prevent potential negative consequences for the environ­ment and public health. For more information about this,
please contact your supplier or the relevant government
authority.

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Manual version 3.0 (21-11-2017) en-43

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DISMANTLING COMFORT AIR CURTAIN

en-44

8. . Addresses

If you have any comments or queries relating to this product,
please do not hesitate to contact your Biddle branch.

en

Biddle bv

P. O . B o x 1 5
9288 ZG Kootstertille
The Netherlands

T [phone]
E [e-mail]
I www.biddle.nl

Biddle nv

Battelsesteenweg 455 B
2800 Malines
Belgium

T [phone]
E [e-mail]
I www.biddle.be

Biddle Air Systems Ltd.

St. Mary’s Road, Nuneaton
Warwickshire CV11 5AU
United Kingdom

T [phone]
E [e-mail]
I www.biddle-air.com

Biddle GmbH

Emil-Hoffmann-Straße 55-59
50996 Cologne
Germany

T [phone]
E [e-mail]
I www.biddle.de

Biddle France

21 Allée des Vendanges
77183 Croissy Beaubourg
France

T [phone]
E [e-mail]
I www.biddle.fr

Manual version 3.0 (21-11-2017) en-45

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COMFORT AIR CURTAIN

. . . Keywords

A

accessories . . . . . . . . . . . . . . . . . . . . . . . . . 7

addresses . . . . . . . . . . . . . . . . . . . . . . . . . 45

application . . . . . . . . . . . . . . . . . . . . . . . . . 4

B

battery type . . . . . . . . . . . . . . . . . . . . . . . . 6

C

capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CE declaration . . . . . . . . . . . . . . . . . . . . 6, 7

central heating system . . . . . . . . . . . . . . . 14

circuit board . . . . . . . . . . . . . . . . . . . . . . 40

cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 32

connecting power supply. . . . . . . . . . . . . 15

control cable . . . . . . . . . . . . . . . . . . . . . . 42

control unit

connecting . . . . . . . . . . . . . . . . . . . . 25

mounting . . . . . . . . . . . . . . . . . . . . . 24

settings . . . . . . . . . . . . . . . . . . . . . . . 20

D

delivery inspection . . . . . . . . . . . . . . . . . . 10

designations . . . . . . . . . . . . . . . . . . . . . . . . 3

determine location . . . . . . . . . . . . . . . . . 12

discharge section . . . . . . . . . . . . . . . . . . . 27

discharge temperature, maximum. . . . 8, 14

dismantling . . . . . . . . . . . . . . . . . . . . . . . . 43

H

heating

regulation . . . . . . . . . . . . . . . . . . . . . 30

switching OFF . . . . . . . . . . . . . . . . . 31

high-limit thermostat . . . . . . . . . . . . . . . . 42

I

input

external control . . . . . . . . . . . . . . . . 21

installation . . . . . . . . . . . . . . . . . . . . . . . . 10

control unit . . . . . . . . . . . . . . . . . . . 19

external controls . . . . . . . . . . . . . . . 19

L

length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

M

mains supply . . . . . . . . . . . . . . . . . . . . . . . 15

maintenance . . . . . . . . . . . . . . . . . . . . . . . 32

scheduled . . . . . . . . . . . . . . . . . . . . . 32

model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

cassette . . . . . . . . . . . . . . . . . . . . . . . 5

free-hanging . . . . . . . . . . . . . . . . . . . . 4

recessed . . . . . . . . . . . . . . . . . . . . . . . 5

modifications . . . . . . . . . . . . . . . . . . . . . . . 7

mounting type . . . . . . . . . . . . . . . . . . . . . . 4

O

E

errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

F

finishing . . . . . . . . . . . . . . . . . . . . . . . . . . 26

frost protection . . . . . . . . . . . . . . . . . . . . 15

fuse ratings . . . . . . . . . . . . . . . . . . . . . . . . 17

fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

en-46 B

operating pressure, maximum . . . . . . . 8, 14

operation . . . . . . . . . . . . . . . . . . . . . . . . . 29

checking . . . . . . . . . . . . . . . . . . . . . . 28

output

Building Management System (BMS) 22

error message . . . . . . . . . . . . . . . . . 22

P

problems

resolving . . . . . . . . . . . . . . . . . . . . . . 33

product series . . . . . . . . . . . . . . . . . . . . . . 6

DF MANUAL

R

removing . . . . . . . . . . . . . . . . . . . . . . . . . . 40

reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

restrictions on use . . . . . . . . . . . . . . . . . . . 7

S

safety instructions

installation. . . . . . . . . . . . . . . . . . . 9, 10

maintenance . . . . . . . . . . . . . . . . . 9, 33

service. . . . . . . . . . . . . . . . . . . . . . 9, 38

usage . . . . . . . . . . . . . . . . . . . . . . . . . . 8

securing. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

service. . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

settings

control unit . . . . . . . . . . . . . . . . . . . . 20

unit . . . . . . . . . . . . . . . . . . . . . . . . . . 22

start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

strength

regulation . . . . . . . . . . . . . . . . . . . . . 30

suspension. . . . . . . . . . . . . . . . . . . . . . 12, 13

switching ON . . . . . . . . . . . . . . . . . . . . . . 28

symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3, 4

en

T

temperature control

automatic . . . . . . . . . . . . . . . . . . . . . 31

manual. . . . . . . . . . . . . . . . . . . . . . . . 30

room . . . . . . . . . . . . . . . . . . . . . . . . . 30

type code . . . . . . . . . . . . . . . . . . . . . . . . . . 5

type designation . . . . . . . . . . . . . . . . . . . . . 5

type plate . . . . . . . . . . . . . . . . . . . . . . . . . . 6

W

wall consoles. . . . . . . . . . . . . . . . . . . . . . . 12

water flow-path, maximum . . . . . . . . . 8, 14

water-side control . . . . . . . . . . . . . . . . . . 15

wiring diagram . . . . . . . . . . . . . . . . . . . . . . 4

working method . . . . . . . . . . . . . . . . . . . . 10

Manual version 3.0 (21-11-2017) en-47

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Copyright and Trademarks

All information and drawings contained in this manual are the property of Biddle and may not be used (other than
for the purpose of unit operation), photocopied, reproduced, translated and/or communicated to third parties
without prior written permission from Biddle.

The name Biddle is a registered trademark of Biddle bv.

Warranty and liability

For the warranty and liability provisions and terms, please refer to the terms & conditions of sale and supply.

At all times, Biddle shall not be held liable for consequential damages.

Liability as regards the manual

Although great care has been taken to ensure the correct and, where necessary, complete description of the
relevant components, Biddle shall not be held liable for damages as a consequence of errors and/or imperfections
in this manual.

Biddle reserves the right to alter the specifications as mentioned in this manual.

Should you nevertheless discover any errors or ambiguities in the manual, we shall be glad to learn that from you.
It helps us to improve the documentation still further.

For more information

If you have any comments or queries relating to this product, please do not hesitate to contact Biddle. You will find
the contact information for your Biddle branch in chapter 8 Addresses.

Biddle bv

P.O. Box 15
9288 ZG Kootstertille
The Netherlands

T [phone]
E [e-mail]
I www.biddle.nl

Name and telephone number of installer: