Biddle DF2 Installation guide

a
Installation, Operating And Maintenance
Manual
Comfort Air Curtain
Model DF2
Version 1.0
Original Manual English

COMFORT AIR CURTAIN
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. . Contents
1 Introduction 4
1.1 About this manual 4
1.2 How to read this manual 4
1.3 About the unit 5
1.4 Restrictions on use 8
1.5 Safety instructions 10
2 Installation 12
2.1 Safety instructions 12
2.2 Inspection on delivery 12
2.3 General working method 12
2.4 Hanging the unit up 13
2.5 Connecting the unit to the central heating system 16
2.6 Connecting the unit to the mains supply 18
2.7 Installing the control panel and external controls 20
2.8 Finishing the unit 25
2.9 Power on and check operation 27
3 Operation 29
3.1 Introduction 29
3.2 Switching the unit ON and OFF 29
3.3 Controlling the fan speed 29
3.4 Control temperature or heating 30
4 Maintenance 31
4.1 Cleaning the unit 31
4.2 Scheduled maintenance 31
5 Errors 32
5.1 Safety instructions 32
5.2 Resolving simple problems 32
5.3 Remedying faults 33
6 Service 37
6.1 Safety instructions 37
6.2 Access 37
6.3 Fuses 40
6.4 Resetting the high-limit thermostat 41
6.5 Biddle control cable composition 41

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7 Dismantling 42
8 Addresses 43
Keywords 47

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1Introduction
1.1 About this manual
This manual describes the installation, operation and mainte-
nance of the Model DoorFlow2Comfort air curtain. The man-
ual also provides instructions and information about servicing.
1.2 How to read this manual
1.2.1 Designations used in the manual
The following symbols are used in the manual:
Note:
nRefers to an important section in the text.
Caution:
cIf you do not carry out the procedure or action
correctly, you may cause damage to the unit.
Follow the instructions precisely.
Warning:
wIf you do not carry out the procedure or
action correctly, you may cause physical injury
and/or damage.
Follow the instructions precisely.
Danger:
dIs 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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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.
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 About the unit
1.3.1 Application and operation of the air curtain
The air curtain is designed to separate indoor and outdoor cli-
mates. 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 methods
The free-hanging model (type F) is designed for free, visible
installation above the door.
SYMBOL DESCRIPTION
wYou have accessed a section of the unit containing compo-
nents which carry a voltage.
Access restricted to qualified maintenance staff only.
Caution is required.
wThis surface or component may be hot. Risk of burns on
contact.

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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
Upon request, we can supply versions for non-standard appli-
cations.
Warning:
wApplications 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.:
Different combinations may arise.
Explanation of the type code
DF2 S-100-W-F
DF2 M-150-E-C
DF2 L-200-A-R
TYPE CODE ELE-
MENT DESIGNATION MEANING
product series DF2air curtain
capacity S small
M medium
L large
length 100, 150, 200, 250 discharge length
(cm)

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1.3.3 Type plate
The type plate is located on the top of the unit.
Designations on the type plate
1.3.4 CE (and UKCA) declaration
The unit is compliant with the applicable CE standards. For the
UK market, the unit is also compliant to the applicable UKCA
standards. The Declaration(s) of Conformity can be found on
the website.
1.3.5 Modifications and changes
Without our approval, no changes or modifications may be
made to the unit that could adversely affect safety. The CE
heating type W hot water
E electrical
A ambient
model F free-hanging
model
C cassette model
R recessed model
TYPE CODE ELE-
MENT DESIGNATION MEANING
DESIGNATION MEANING
Type complete type code of the
unit
Noserial number, production
week and year
M weight of unit
Medium medium
pmax maximum permissible operat-
ing pressure
U power supply voltage
Imax max. current
Pmotor max. power consumption by
fans
Pheating For electrically heated
models:
max. power consumption by
heating element

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(and UKCA where appropriate) 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 (optional):
• control panel (can be used for multiple units)
• control cable – Type RJ4
• door contact switch
• BMS connectivity module (Modbus or Bacnet)
For water-heated models (Type W):
•optional:
2 port valve for water-side control (sold separately)
Note:
nThe 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 Restrictions on use
1.4.1 Field of application
• The unit may only be used indoors.
• The unit is suitable only for dry and non-dusty environ-
ments.
• The unit is not to be used in an environment where corro-
sive 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 con-
trol panel.

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1.4.2 Required skills
• You must be technically qualified to install, maintain or ser-
vice the unit in accordance with local legislation, regula-
tions and standards.
• For operation in daily use, no special skills are required.
• The product is installed, such that children of less than 3
years should be kept away unless continuously supervised.
Where this is not possible and higher water temperatures
are used Biddle recommend the unit’s casework should be
tested to ensure that it doesn’t become too hot with the
potential to cause burns. Children aged from 3 years and
less than 8 years shall only switch on/off the appliance pro-
vided that it has been placed or installed in its intended
normal operating position and they are supervision or have
been given instruction concerning use of the appliance in a
safe way and understand the hazards involved. Children
aged from 3 years and less than 8 years shall not plug in,
regulate, clean the appliance or perform user maintenance
(as stated in EN 60335-2-30 clause 7.12). Where opera-
tion of the product is to be limited to certain persons only,
Biddle recommend installing the controls in a suitable
locked cupboard or similar.
• This product can be used by children aged from 8 years
and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concern-
ing the use of the product in a safe manner (as stated in EN
60335-1 clause 7.12)
Danger:
dDo 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
Application limitations for units with water heating
Heating medium water with max. 20%
glycol
Maximum water
temperatures
W2 90/70 °C
W4 70/50 °C
Max. discharge
temperature
types S/M 55 °C
type L 45 °C
Maximum operating pressure 8 bar

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1.5 Safety instructions
1.5.1 Safety in use
Warning:
wDo not put any objects into the inlets and
outlets.
Warning:
wDo not obstruct the unit’s inlets or outlets.
Warning:
wThe upper surface of the unit becomes hot
during operation.
Caution:
cIn 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, mainte-
nance and servicing
Danger:
dThe unit may only be opened by qualified
technical staff.
Warning:
wPerform the following actions before opening
the unit:
1. Switch the unit off, using the control panel.
2. Wait until the fans have stopped.
Danger:
dThe fans may continue rotating for a while.
3. Allow the unit to cool down.
Caution:
cThe heat exchanger or the heating elements, canget
very hot.
4. Disconnect the mains supply (remove plug from the power
socket or turn off at the isolation switch).

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5. For water-heated models:
isolate the water connections.
Warning:
wThe fins of the heat exchanger are sharp.

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2Installation
2.1 Safety instructions
Warning:
wInstallation activities may only be performed
by technical staff qualified for this purpose.
Warning:
wBefore starting installation: read the safety
instructions.
See also:
1.5 "Safety instructions" on page 9
2.2 Inspection on delivery
• Check the unit and the packaging to ensure that they have
been delivered in good order. Notify the supplier and, if
possible, the driver immediately if any shipping damage is
detected.
• Ensure that all components are present. Notify supplier of
any missing parts immediately.
2.3 General working method
2.3.1 Sequence of operations
Biddle recommends working as follows when installing the
unit:
1. Hang the unit up.
2. For models with water-heating (type W) :
connect the unit to the central heating system.
3. Connect the unit to the mains supply.
4. Install the optional control panel and any required connec-
tions to external controls.
5. Complete the installation of the unit.

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6. Switch the mains supply on and check that the unit is
working properly.
7. Connect the unit to any building management systems (if
required).
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.
Note:
nMake 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.
Note:
nDuring the installation period, protect the unit
against damage and penetration of dust, cement, etc.
You can, for instance, use the packaging for
protection.
See also:
1.4 "Hanging the unit up" on page 3
1.5 "Connecting the unit to the central heating system" on
page 7
1 "Connecting the mains supply" on page 1
1.7 "Installing the control panel and external controls" on
page 12
1.8 "Finishing the unit" on page 20
1.9 "Power on and check operation" on page 22
2.4 Hanging the unit up
2.4.1 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.

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• 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.
Warning:
wThe 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.
Warning:
wThe 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

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2.4.2 Mounting the optional remote control
1. Identify a suitable place for the wall controller to be
mounted. This should be away from direct sunlight in a
place where tampering is not likely to affect the operation
of the unit. If the sensor in the wall controller is being used
to control the heating, then ensure it's sufficiently exposed
to the room temperature.
2. Install the control cable between the unit and where the
wall controller is to be positioned.
3. Open the casing.
4. Affix the back of the casing to the wall using 2 screws over
the cable.
5. Plug the cable into the connector on the back of the wall
controller.
6. Close the casing.
7. Terminate the other end of the cable into the top of the
unit.
Note:
nLeave approximately 20cm of slack in the cable
above the unit to make serving the unit easier in the
future.
2.4.3 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 DF2F, R as needed
b all DF2F, R 35 mm
c all DF2F, R 290 mm
d DF2 100-F, 100-R 896 mm
DF2 150-F, 100-R 1396 mm
DF2 200-F, 200-R 1896 mm
DF2 250-F, 250-R 2396 mm

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Dimensions of hole and suspension for cassette model
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.
2.5 Connecting the unit to the central heating system
See also:
1.2.2 "Opening the unit" on page 2
SIZE TYPE DIMENSIONS
a DF2 100-C 1012 mm
DF2 150-C 1512 mm
DF2 200-C 2012 mm
DF2 250-C 2512 mm
b all DF2 C 705 mm
c DF2 100-C 937 mm
DF2 150-C 1437 mm
DF2 200-C 1937 mm
DF2 250-C 2437 mm
d all DF2 C 641 mm

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2.5.1 Special points
Caution:
cThe 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 an isolation valve and a bleed valve on both pipes
close to the unit.
Application limitations for units with water heating
2.5.2 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 tem-
perature;
• 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.
2.5.3 Connecting the water-side control
The unit is fitted as standard with a connected three-way valve
inside the unit.
If a two-port valve is opted for (accessory), the valve is sup-
plied separately. In that case, connect the valve as follows:
Heating medium water with max. 20%
glycol
Maximum water
temperatures
W2 90/70 °C
W4 70/50 °C
Max. discharge
temperature
types S/M 55 °C
type L 45 °C
Maximum operating pressure 8 bar

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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’).
2.6 Connecting the unit to the mains supply
2.6.1 Special points
For all models:
Warning:
wThe unit must be earthed.
Warning:
wThe unit must be connected in accordance
with the applicable local requirements.
For water-heated models and models without heating:
• The unit can be switched on and off from the power sup-
ply. 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 fur-
ther 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.

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For electrically heated models:
Warning:
wDo 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;
- be able to be isolated and locked off;
- have a contact separation of at least 3 mm;
- be positioned no more than 4 m from the connection
side of the unit.
See also:
1.3.3 "Type plate" on page 6
2.6.2 Fuse ratings
Warning:
wEach unit must be fused in accordance with
the table below.
Warning:
wElectrical models (type E) must each be
individually fused in accordance with the table
below.
Fuse ratings
Note:
nA single fuse may only be used for multiple units if
they draw a total current of less than 10A.
MAXIMUM AMPERAGE ON
TYPE PLATE L1, L2 OR L3 MAXIMUM FUSE VALUE A
≤ 10A 16 A
≤ 20A 25 A
≤ 25A 35 A
≤ 35A 50 A
≤ 50A 63 A
≤ 65A 80 A
≤ 80A 100 A
≤ 102A 125 A

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2.6.3 Connecting the unit
For water-heated models (type W) and models with-
out heating (type A):
1. Insert the plug into the power socket only after installa-
tion has been completed.
For electrically heated models (type E):
Warning:
wOnly 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.
Caution:
cDo not switch on the mains supply yet.
See also:
1.2.2 "Opening the unit" on page 2
2.7 Installing the control panel and external controls