Biddle CA Series Use and care manual

User’s and Installer’s Manual
Comfort Air Curtain
Model CA
a
Version of Guide: 4.0 R

2
Copyright and trademarks
All the information and drawings in this manual are the property of Biddle and may not be used (other than for the
actual operation of the device), photocopied, duplicated, translated and/or be brought to the attention of third
parties without Biddle’s prior written permission.
The name Biddle is a registered trademark.
Warranty and Liability
Please refer to Biddle’s Terms of Sales and Delivery for warranty and liability conditions.
Biddle excludes liability for consequential loss at all times and under all circumstances.
Liability for the contents of this manual
However much care might have been taken in ensuring the correctness and, where necessary, completeness of the
description of the relevant parts, Biddle disclaims all liability for damage resulting from any inaccuracies and/or
deficiencies in this manual.
Should you detect any errors or ambiguities in this manual then we would be pleased to hear from you: it helps us
to improve our documentation even further.
Biddle retains the right to change the specifications stated in this manual.
For more information
If you have any comments or questions about specific topics relating to this product, please do not hesitate to
contact Biddle.
Address for the UK:
Biddle Air Systems Ltd.
St. Mary’s Road
Nuneaton
Warwickshire CV11 5AU
United Kingdom
tel: [phone]
fax: [phone]
e-mail: [e-mail]
internet: www.biddle-air.com
Address for other countries:
Biddle bv
P. O. B o x 1 5
NL-9288 ZG Kootstertille
The Netherlands
tel: [phone]
fax: [phone]
e-mail: [e-mail]
internet: www.biddle.info

USER’SAND INSTALLER’SMANUAL
Version: 4.0 (23-08-2007) 3
. . . Table of contents
Table of contents 3
1 Introduction 5
1.1 About this manual 5
1.2 How to use this manual 5
1.3 About the unit 7
1.4 Safety instructions 10
2 Installation 11
2.1 Safety instructions 11
2.2 Delivery check 11
2.3 General working method 11
2.4 Mounting the unit 12
2.5 Connecting unit to central heating system 15
2.6 Connecting the unit to the power supply 16
2.7 Installing control panel and external controls 19
2.8 Finishing the unit 22
2.9 Switching on and checking operation 27
3 Operation 28
3.1 Switching On and Off 28
3.2 Selecting the air curtain strength 29
3.3 Enabling or disabling heating 30
3.4 Display messages 31
4Settings 32
4.1 General 32
4.2 Manager’s level 32
4.3 Installer’s level 35
4.4 Room temperature control 37
4.5 External controls 38
5 Maintenance 42
5.1 Replacing or cleaning the filter 42
5.2 Cleaning the unit 45
5.3 Scheduled maintenance 45
6Faults 46
6.1 Safety instructions 46
6.2 Resolving simple problems 46
6.3 Fault messages in control panel 47
6.4 Remedying faults with fault message 48
6.5 Remedying faults without message 52

COMFORT AIR CURTAIN
4
7Service 53
7.1 Safety instructions 53
7.2 Access to the interior of the unit 53
7.3 Electronics module 55
7.4 Fuses 56
7.5 Taking discharge section out 56
7.6 Venting heat exchanger 57
7.7 Entering unit code into printed circuit board 57
7.8 Composition of Biddle control cable 58
EC declaration of agreement 60

USER’SAND INSTALLER’SMANUAL INTRODUCTION
Version: 4.0 (23-08-2007) 5
1. . Introduction
1.1 About this manual
1.1.1 General
This manual describes the installation, operation and mainte-
nance of the comfort air curtain model CA. The manual also
provides instructions and information on service works.
1.1.2 Which model types are covered by this manual?
This manual covers model types CA, produced since February
2004. These can be recognised by the plastic inlet grate (with
free-hanging models) or by the flat underside (with recessed
models).
This manual is valid as from control panel version 1.7 and as
from printed circuit board version 1.7. The control panel’s ver-
sion number can be read out at the installer’s level (see sec-
tion 4.3.3, function no. 70). The printed circuit board’s version
number is indicated on the board itself (see section 7.3).
1.2 How to use this manual
If you are unfamiliar with the comfort air curtain, read this
manual section by section.
If you are familiar with the device, you may use this manual as
a reference. Refer to the table of contents for looking up
information.
1.2.1 References in the manual
In this guide the following marginal symbols are used:
Note:
nDraws your attention to an important part of the text.
Read this part of the text thoroughly.
Caution:
cIf you do not perform this procedure or action correctly,
you may damage the device.
Follow the instructions strictly.

INTRODUCTION COMFORT AIR CURTAIN
6
Warning:
wIf you do not perform this procedure or action cor-
rectly, you may cause damage and/or bodily injury.
Follow the instructions strictly.
Danger:
dThis indicates actions which are not permitted.
Ignoring this warning may lead to serious damage
or accidents which may involve bodily injury.
The action may be carried out only by qualified
staff performing maintenance or repair works.
1.2.2 Symbols used on the unit and in the manual
The symbols in Table 1-1 warn against potential risks and/or
dangers. The symbols can be found opposite the text discuss-
ing risk-entailing operations. The same symbols will also be
found on the device.
1.2.3 Related documentation
Besides this manual, the following documents come with the
unit:
• wiring diagram for installation and service
Table 1-1 Symbols
SYMBOL DESCRIPTION
Warning: You are entering an area which contains ‘live’ components.
Accessible to qualified maintenance staff only.
Exert caution.
Warning: This surface or part can be hot. There is a risk of burns on
contact.
ê
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USER’SAND INSTALLER’SMANUAL INTRODUCTION
Version: 4.0 (23-08-2007) 7
1.3 About the unit
1.3.1 Applications
The comfort air curtain is designed to separate the climates
between two rooms. The unit is installed above the doorway,
across its full width.
The free-hanging model is designed for free, visible installation
above the door.
The recessed model 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 is designed for installation above a false
ceiling, with the inlet opening close to the unit and with easy
access to the unit.
1.3.2 Working
The air curtain blows out a warm air stream straight down,
thus achieving the following:
• The exchange of air between two rooms due to tempera-
ture differences (convection) is stopped.
• The cold air entering across the floor due to draught is
heated.

INTRODUCTION COMFORT AIR CURTAIN
8
1.3.3 Models and type references
Table 1-2 provides an overview of available models of the com-
fort air curtain and corresponding type references. Com-
bined, the type references constitute the type code, for
instance: CA S-100-W-F. Any combination is available.
If some part of the manual applies to certain models only,
these will be indicated using the corresponding type refe-
rence, for instance:
- CA S, M: models with capacity S or M;
- CA 100: models with discharge width 100;
- CA W: water-heated models;
- CA E: electrically-heated models;
- CA F: free-hanging models.
Note:
nIn the illustrations in this manual, the following unit type is
used as a general example: CA M-150-W-F. The appea-
rance of your unit may be different but its working is iden-
tical, unless stated otherwise.
Table 1-2 Type code explained
T
YPE CODE
ELEMENT REFERENCE MEANING
product series CA general reference for the series
capacity S, M, L or XL small, medium, large or extra large range
discharge width 100, 150, 200 or 250 discharge width in cm
heating W water heating
E electric heating
H hybrid heating:
combined water and electric heating
heating W water heating
E electric heating
mounting method F free-hanging model
R recessed model
C cassette model

USER’SAND INSTALLER’SMANUAL INTRODUCTION
Version: 4.0 (23-08-2007) 9
1.3.4 Type plate
The type plate can be found on the top of the unit.
This manual refers to the following data on the type plate:
•Type: full type code of the unit;
•Code: unit code of the electronic controller;
•M: weight of the unit;
•Pmax: maximum permissible operating pressure in the hot
water circuit (at 110 ºC);
•U, Imax, Pmotor and Pheating: maximum load on the electrical
system by the unit.
1.3.5 Components and accessories
Note:
nThe type code of components and accessories must corre-
spond to that of the unit to which they will be applied.
Components
The following components are delivered separately but always
required:
• control panel (able to control a maximum of 10 units);
• Biddle control cable, available in various lengths;
•only with free-hanging models: set of end panels.
Accessories
The following accessories are available as options:
• door contact switch;
• wall bracket set, ‘Standard’ or ‘Design’;
• threaded rod lining;
• long-life filter (instead of the standard inlet grates and/or
grilles);
• BMS interface module (instead of control panel).
Type CA M-150-W-F
Code 1213 U 230 V 1N~ 50 Hz
Biddle bv
Markowei 4
NL-9288 HA Kootstertille
Nº 5426/1-1 00-01 Imax L1 2.4 A
Imax L2 -
M 60 kg Imax L3 -
Medium LPHW Pmotor 0.56 kW
pmax 1400 kPa Pheating -
Example of a type plate

INTRODUCTION COMFORT AIR CURTAIN
10
1.4 Safety instructions
1.4.1 Operation
Warning:
wDo not put any objects in the inlets and outlets.
Warning:
wDo not block the inlets and outlets.
Warning:
wThe upper surface of the unit becomes hot during
operation.
1.4.2 Installation, maintenance and service
Danger:
dThe unit may be opened by qualified technical staff
only.
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.
3. Allow the unit to cool down.
The heat exchanger or, as the case may be, the heating ele-
ments can get very hot. Moreover, the fans may keep on
rotating for a while.
4. Disconnect power supply (remove plug from socket or
move isolation switch to Off).
5. For water-heated models: close the main water supply (if
possible).
Warning:
wThe fins of the heat exchanger are sharp.
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USER’SAND INSTALLER’SMANUAL INSTALLATION
Version: 4.0 (23-08-2007) 11
2. . Installation
2.1 Safety instructions
Danger:
dInstallation works on the unit may be performed by
qualified technical staff only.
Warning:
wBefore opening the unit, follow the safety instruc-
tions in section 1.4.
2.2 Delivery check
1. Check the unit and its packaging for correct delivery.
Immediately report to the supplier any damage caused in
transit.
2. Make sure that all components and accompanying parts
have been supplied.
2.3 General working method
Working method
Biddle recommends the following working method for instal-
ling the comfort air curtain:
1. Mount the unit (section 2.4).
2. For water-heated models (CA W and CA H): connect the unit
to the central heating system (section 2.5).
3. Connect the unit to the power supply (section 2.6).
4. Install the control panel and (any optional) connections to
external controls (section 2.7).
5. Finish the unit (section 2.8).
6. Turn on the power supply and check the working of the
unit (section 2.9).

INSTALLATION COMFORT AIR CURTAIN
12
7. Perform the following settings on the control panel to
adjust the operation of the comfort air curtain to the sys-
tem (section 4):
-if external controllers are used: the functions of the inputs
and outputs (function nos. 52, 60, 61 and, possibly, 76
at the installer’s level, see section 4.5);
-if long-life filters are used: the filter life (function no. 3 at
the installer’s level, see section 4.3);
- other functions at the installer and/or manager’s level
(as needed).
General instructions
Some parts of this section are applicable only to certain
models. Where this is the case, it will be indicated. If no spe-
cific model is referred to, the description applies to all models.
Note:
nMake sure you perform all installation operations that are
required for your unit.
Check the type plate. Refer to section 1.3.3 if you are not
sure about the model or type of your unit.
Note:
nProtect the unit from damage and ingress of dust, cement,
etc. throughout the installation. You can, for instance, use
the packaging for protection.
2.4 Mounting the unit
2.4.1 Positioning the unit
• Make sure that the structure from which the unit is about
to be suspended can bear the weight of the unit. The
weight is specified on the type plate (see section 1.3.4).
• Note the following dimensions:
- The unit must be at least as wide as the doorway
(dimension b).
- Position the unit as near to the doorway as possible.
- The maximum mounting height of the unit (dimension
h, measured from the floor to the discharge grille)
depends on the unit type and circumstances. If not
sure, ask Biddle for advice on the correct height.
x
h
b

USER’SAND INSTALLER’SMANUAL INSTALLATION
Version: 4.0 (23-08-2007) 13
Warning:
wThe minimum mounting height (dimension h) is
1.8 m.
Warning:
wThe top of the unit may get hot. Mount the unit
with a minimum clearance of 25 mm from the
ceiling (dimension x on page 12).
2.4.2 Fixing suspension brackets
1. Fix four thread rods M8, according to the dimensions in
Table 2-1. Make sure the thread rods are perpendicular.
Note:
nUnits of type CA 250 have three suspension brackets. Fix
six thread rods for that type.
2. Apply a lock nut 1to each thread rod.
3. Apply the suspension brackets 2onto the thread rods,
and apply the nuts 3.
4. Make sure the suspension brackets are suspended horizon-
tally and flush.
5. Secure each suspension bracket by tightening the lock
nuts 1.
ç
1
2
3
Table 2-1 Dimensions for suspending unit
REFERENCE TYPE DIMENSIONS
a all models as needed
b CA S 119 mm
CA M 119 mm
CA L 200 mm
CA XL 200 mm
c all models 197 mm
d CA 100 500 mm
CA 150 1,000 mm
CA 200 1,500 mm
CA 250 (six
thread rods)
2 x 1,000 mm
a
bcd

INSTALLATION COMFORT AIR CURTAIN
14
2.4.3 Suspending and securing the unit
1. Remove the components and packaging from the pallet
with the unit on it. Leave the unit on the pallet.
2. The unit is fixed to the pallet with two transportation
brackets 1. Remove the screws 2. But do not remove the
brackets from the unit.
3. Tilt the unit across the pallet and lay it down as shown
opposite.
4. Lift the pallet, with the unit on it, and hook the unit into
the suspension brackets.
Caution:
cDepending on the weight (specified on the type plate, see
section 1.3.4), either use a lifting device or lift the unit with
at least 2 persons.
Note:
nAlways use the pallet when lifting the unit to prevent any
damage.
5. The unit now suspends from the suspension brackets: take
the pallet away.
6. Remove the transportation brackets 1from the unit.
2
2
1
1
1

USER’SAND INSTALLER’SMANUAL INSTALLATION
Version: 4.0 (23-08-2007) 15
7. Apply a lock plate 3onto each suspension bracket.
Warning:
wThe unit may come down if you do not secure the
suspension.
8. Check whether the unit is suspended firmly:
- Try to push the unit from its suspension.
- Shake the unit for a few seconds.
Warning:
wEnsure you do not run any risk, should the unit
come down.
2.5 Connecting unit to central heating system
Water-heated models CA W and CA H only
2.5.1 Particulars
Caution:
cThe supply and return pipes of the central heating system
must be connected to the appropriate corresponding con-
nections 1. The directions are indicated on the unit using
arrows.
• The maximum permissible operating pressure of the hot
water circuit is specified on the type plate (see section
1.3.4). It is based on a water temperature of 110 ºC.
Caution:
cThe unit has an integrated water control. The central heat-
ing connection must not be fitted with a control valve.
• The water control valve will close automatically if the air
curtain and/or the heating is switched off.
Caution:
cBiddle recommends the inclusion of a valve in each pipe.
• The bleed valve 2of the heat exchanger is located at the
left in the top of the unit.
2
3
2
1

INSTALLATION COMFORT AIR CURTAIN
16
2.5.2 Frost protection
The electronic control features integrated frost protection. It
works in two stages:
1. If the discharge air temperature falls to below 5 ºC:
- the control panel will temporarily display fault message
E6 (see section 6.3);
- the valve of the integral water control will open fully;
- the unit’s output will transmit a signal for the central
heating system (if set so, see section 4.5.6, value 15).
2. If the discharge air temperature falls to below 2 ºC:
- fault message E6 will become final;
- the air curtain is switched off.
The frost protection is automatically lifted when the entering
or leaving air temperature rises to above 8 ºC.
Caution:
cThe frost protection reduces the risk of freezing but does
not warrant 100% protection.
Take the following precautions if you install the unit in a
room where frost may occur:
- Provide for constant circulation of the water at the
right temperature.
- Add glycol to the water when the unit is not in opera-
tion during the wintertime.
2.5.3 Performing connection
1. Connect the unit to the central heating system.
2. Vent the heat exchanger.
3. Check the connections for leaks.
2.6 Connecting the unit to the power supply
2.6.1 Connecting water-heated models (CA W)
1. Ensure that an (earthed) power point is available at a maxi-
mum of 1.5 m from the left side of the unit.
Warning:
wThe unit must be earthed.

USER’SAND INSTALLER’SMANUAL INSTALLATION
Version: 4.0 (23-08-2007) 17
Warning:
wThe wall socket must remain accessible after the
installation of the unit to be able to disconnect the
unit from the mains when maintenance work is to
be performed.
2.6.2 Connecting electrically-heated models (CA E and
CA H)
Danger:
dDo not perform the connection work unless you
are qualified to work with three-phase current.
Particulars
• Connect the unit to the power supply with a 5-core cable
(not supplied). The maximum load data is specified on the
type plate (see section 1.3.4).
• An isolation switch (not supplied) must be fitted between
the unit and the power supply. This switch must:
- be all-pole;
- have a minimum contact clearance of 3 mm;
- be positioned at a maximum of 4 m from the left side
of the unit.
Warning:
wThe unit must not be switchable using the power
supply cable: use the control panel for that.
Warning:
wThe unit must be grounded.
Warning:
wConnect the unit in accordance with the applicable
local requirements.
123N
contact clearance
RS TN

INSTALLATION COMFORT AIR CURTAIN
18
Performing connection
Warning:
wMake sure that the power supply you are working
on is switched off.
1. Fit the isolation switch and connect it to the power supply.
2. Remove the inspection panel:
- Remove the screws 1.
- Pull the panel a little forward and take it away.
Caution:
cThe whole panel will come loose when you pull it for-
ward: take care it does not fall down.
3. Fix the cable swivel 2to the unit. With the CA H, the
position of the cable swivel differs from that shown
4. Lead the power supply cable through the cable swivel.
5. Connect the cable to the terminal 3in the unit accord-
ing to the wiring diagram.
Note:
nThe design in your unit may differ from the illustration.
6. Put back and screw down the inspection panel.
7. Connect the power supply cable to the isolation switch.
Caution:
cDo not yet switch the power supply on.
1111
2
3

USER’SAND INSTALLER’SMANUAL INSTALLATION
Version: 4.0 (23-08-2007) 19
2.7 Installing control panel and external controls
2.7.1 Control panel details
Positioning
• You may fix the control panel either to the wall or to a
standard socket.
Cabling
Note:
nTake the following into account, otherwise faults may
occur:
- The control cable between the control panel and the
(first) connected unit may not be longer than 50 m.
- Keep control cables away from electromagnetic fields
and interference sources such as high-voltage cables
and fluorescent-light starters.
- Stretch control cables out or roll them up neatly.
- Do not remove the dummy plug, unless otherwise
stated.
Note:
nUse only control cables from Biddle. Standard modular
telephone cable is not suitable.
Multiple units operated from one single control panel
• Up to 10 units can be connected to one single control
panel. To do so, the units must be interlinked.
• Only units that have the same unit code (see “code” on
the type plate, section 1.3.4) can be operated from one
control panel at the same time.
• The total length of the control cables is not to exceed
100 m.
2.7.2 External control details
Control panel input
The control panel has one input signal interface. To this, a
timer or a door switch is usually connected.
Type CA M-150-W-F
Code 1213 U 230 V 1N~ 50 Hz
Biddle bv
Markowei 4
NL-9288 HA Kootstertille
Nº 5426/1-1 00-01 I
max
L1 2.4 A
I
max
L2 -
M 60 kg I
max
L3 -
Medium LPHW P
motor
0.56 kW
p
max
1400 kPa P
heating
-
code

INSTALLATION COMFORT AIR CURTAIN
20
Unit input
The unit has one input signal interface. To this, a timer, a door
switch, a room thermostat or a BMS (building management
system) signal may be connected.
Caution:
cBoth inputs are designed for controls with potential-free
contacts, and are not to be loaded.
Unit outputs
The unit has interfaces for two output signals: these can be
used for, for instance, controlling the central-heating or
cooling system, or for transmitting status reports to a BMS.
Caution:
cThe outputs are potential-free contacts (relays). Their
maximum load is 24 V / 1 A.
Options and operation
Options and operation depend on the inputs or output as well
as on the control panel settings. These are further described
in section 4.5.
2.7.3 Mounting and connecting control panel
1. Lay the control cable.
2. If the external-control input in the control panel is used: lay the
necessary cabling. The cable core diameter is not to
exceed 0.75 mm².
3. Open the control panel 1.
4. Lead the control cable and (if applicable) the external con-
trol cable through the back plate.
5. Screw the back plate onto the socket or the wall.
6. Lead the cable/s through the pull reliefs.
- The upper left pull relief 2is designed for the control
cable, and the upper right pull relief 3for the external-
control cable.
- The cable must protrude some 9 cm from the pull
relief.
1
2
3
54