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).