Biddle CITY User manual

Manual
Comfort air curtain
Model CITY
a
Version of Guide: 4.6 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

MANUAL
Version: 4.6 (15-06-2009) 3
. . . Table of contents
1 Introduction 5
1.1 About this manual 5
1.2 How to use this manual 5
1.2.1 References in the manual 5
1.2.2 Symbols used on the unit and in the manual 6
1.2.3 Related documentation 6
1.3 About the unit 6
1.3.1 Applications 6
1.3.2 Working 7
1.3.3 Models and type references 7
1.3.4 Type plate 8
1.3.5 Components and accessories 9
1.4 Safety instructions 10
1.4.1 Operation 10
1.4.2 Installation, maintenance and service 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
2.4.1 Positioning the unit 12
2.4.2 Fixing suspension brackets 13
2.4.3 Suspending and securing the unit 13
2.5 Connecting unit to central heating system 14
2.5.1 Particulars 14
2.5.2 Performing connection 15
2.6 Connecting the unit to the power supply 15
2.6.1 Connecting water-heated models and models without heating 15
2.6.2 Connecting electrically-heated models 15
2.7 Installing the controller 17
2.8 Finishing the unit 17
2.8.1 Finishing free-hanging models 17
2.8.2 Finishing recessed models 18
2.8.3 Finishing cassette models 21
2.9 Switching on and checking operation 22
3 Maintenance 24
3.1 Replacing or cleaning the filter 24
3.1.1 Introduction 24
3.1.2 Removing the filter 24
3.2 Cleaning the unit 25
3.3 Scheduled maintenance 25

COMFORT AIR CURTAIN
4
4Service 26
4.1 Safety instructions 26
4.2 Access to the interior of the unit 26
4.3 Electronics module 28
4.3.1 Introduction 28
4.3.2 Taking electronics module out 28
4.4 Fuses 29
4.5 Venting heat exchanger 29
EC declaration of agreement 32

MANUAL INTRODUCTION
Version: 4.6 (15-06-2009) 5
1. . Introduction
1.1 About this manual
This manual describes the installation and maintenance of the
comfort air curtain model CITY. The manual also provides
instructions and information on service works.
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 or the index for
looking up information.
1.2.1 References in the manual
In this manual 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.
Warning:
wIf you do not perform this procedure or action cor-
rectly, you may cause damage and/or bodily injury.
Follow the instructions strictly.

INTRODUCTION COMFORT AIR CURTAIN
6
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:
• operation and control manual
• wiring diagram for installation and service
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.
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
ç

MANUAL INTRODUCTION
Version: 4.6 (15-06-2009) 7
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.
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: CITY S-100-W-F.
If some part of the manual applies to certain models only,
these will be indicated using the corresponding type refe-
rence, for instance:

INTRODUCTION COMFORT AIR CURTAIN
8
-CITYS: models with capacity S
-CITY100: models with discharge width 100
-CITYW: water-heated models
-CITYE: electrically-heated models
-CITYF: free-hanging models
Note:
nIn the illustrations in this manual, the following unit type is
used as a general example: CITY M-150-W-F. The appea-
rance of your unit may be different but its working is iden-
tical, unless stated otherwise.
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
•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
Table 1-2 Type code explained
TYPE CODE
ELEMENT REFERENCE MEANING
product series CITY general reference for the series
capacity S, M or L small, medium or large range
discharge width 100, 150, 200 or 250 discharge width in cm
heating Wwater heating
Eelectric heating
Awithout heating (‘ambient’)
mounting method Ffree-hanging model
Rrecessed model
Ccassette model
Type CITY M-150-W-F
Code U 230 V 1N~ 50 Hz
Biddle bv
Markowei 4
NL-9288 HA Kootstertille N” 208020/1-1 00-01 Imax L1 1.64 A
Imax L2 -
M 63 kg Imax L3 -
Medium LPHW Pmotor 0.37 kW
pmax 600 kPa Pheating -
Example of a type plaatje

MANUAL INTRODUCTION
Version: 4.6 (15-06-2009) 9
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.
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
The following accessories are available as options:
• discharge temperature control
• door contact switch
• wall bracket set

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.
ç
ê
ç

MANUAL INSTALLATION
Version: 4.6 (15-06-2009) 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 metho d
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: 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
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
Danger:
dDo NOT install the unit in vertical position.
• 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 (see Table 2-1).
Warning:
wThe minimum mounting height (dimension h) is
1.8 m.
x
h
b

MANUAL INSTALLATION
Version: 4.6 (15-06-2009) 13
Warning:
wThe top of the unit may get hot. Mount the unit
with a minimum clearance of 25 mm from the
ceiling (dimension x).
2.4.2 Fixing suspension brackets
1. Fix four thread rods M8, according to the dimensions in
Table 2-2. Make sure the thread rods are perpendicular.
Note:
nUnits of type CITY 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.
2.4.3 Suspending and securing the unit
1. Lift the unit up and hook it onto 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.
Table 2-1 Mounting height of unit
TYPE MAXIMUM MOUNTING HEIGHT
CITY S 2,3 m
CITY M 2,5 m
CITY L 3,0 m
• These heights apply under normal circumstances. If not
sure, ask Biddle for advice on the correct height.
ç
1
2
3

INSTALLATION COMFORT AIR CURTAIN
14
2. Apply a lock plate 3onto each suspension bracket.
Warning:
wThe unit may come down if you do not secure the
suspension.
3. 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 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.
Table 2-2 Dimensions for suspending unit
REFERENCE TYPE DIMENSIONS
aall models as needed
bCITY S 119 mm
CITY M 119 mm
CITY L 200 mm
call models 197 mm
dCITY 100 500 mm
CITY 150 1,000 mm
CITY 200 1,500 mm
CITY 250 (six
thread rods)
2 x 1,000 mm
a
bcd
2
3
2
1

MANUAL INSTALLATION
Version: 4.6 (15-06-2009) 15
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.
2.5.2 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 and models
without heating
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.
2.6.2 Connecting electrically-heated models
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.
123N
contact clearance
RS TN

INSTALLATION COMFORT AIR CURTAIN
16
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.
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 1:
- Remove the screws from the front of the inspection
panel.
- 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.
4. Lead the power supply cable through the cable swivel.
1
2

MANUAL INSTALLATION
Version: 4.6 (15-06-2009) 17
5. Connect the cable to the terminal 3in the unit according
to the wiring diagram.
6. Put back and screw down the inspection panel.
Warning:
wAlways fasten the inspection panel with serrated
flange bolts: they are necessary for earthing
(grounding).
7. Connect the power supply cable to the isolation switch.
Caution:
cDo not yet switch the power supply on.
2.7 Installing the controller
For the installation of the controller and external controls,
refer to the operation system manual.
The connections are located at 1on the upper side of the
unit.
Note:
nAllow some 30 cm excess cable length: it will be needed to
take the electronics out when servicing the unit.
2.8 Finishing the unit
2.8.1 Finishing free-hanging models
Fitting inlet grates
8. Fit the inlet grates to the unit:
- Hook the grates onto the upper side of the unit.
- The back of each grate has a projection. Fit the grate
with the projection into the rectangular hole 1.
3
1
1

INSTALLATION COMFORT AIR CURTAIN
18
2.8.2 Finishing recessed models
General
Note:
nEnsure that the unit remains accessible for maintenance
and repair through, for instance, an inspection hatch.
Adjusting discharge duct
If linking two or more units to each other, you must adjust the
discharge duct so that the finishing edges will not be in each
other’s way.
1. Remove the end piece with finishing edge 1.
2. Mount the end piece without finishing edge 2.
Mounting discharge duct
3. Make a hole in the ceiling for the discharge (for dimen-
sions, see Table 2-3).
4. Fix the two angle sections3with sheet metal screws to
the unit, along the edges of the discharge opening.
5. Slide the discharge duct 4into the discharge opening until
the desired height is reached.
1
2
3
4

MANUAL INSTALLATION
Version: 4.6 (15-06-2009) 19
6. Using sheet metal screws, fix the discharge duct to the
angle sections 3.
Mounting unit plenum of inlet section
Note:
nWith the unit types CITY 200 and CITY 250, the compo-
nents of the inlet section are supplied in two sections.
1. Mount the unit plenum to the unit:
-Hook the plenum onto the upper side of the unit.
- Screw the plenum to the bottom side.
Note:
nThe unit plenum may come mounted on delivery.
Mounting grille plenum of inlet section
2. Make a hole in the false ceiling for the inlet section (see
Table 2-4).
Table 2-3 Discharge section hole dimensions
REFERENCE TYPE DIMENSIONS
aCITY S-R 102 mm
CITY M-R 102 mm
CITY L-R 133.5 mm
bCITY 100-R 1,008 mm
CITY 150-R 1,508 mm
CITY 200-R 2,008 mm
CITY 250-R 2,508 mm
b
a
Table 2-4 Inlet section hole dimensions
REFERENCE TYPE DIMENSIONS
aCITY S-R 268 mm
CITY M-R 268 mm
CITY L-R 368 mm
bCITY 100-R 1,008 mm
CITY 150-R 1,508 mm
CITY 200-R 2,008 mm
CITY 250-R 2,508 mm
b
a

INSTALLATION COMFORT AIR CURTAIN
20
3. Take the inlet grille out of its frame:
- Push the two pins 1in the grille towards one another
and tilt the grille outward.
- Push the two pins at 2towards one another and take
the grille out.
4. Mount the grille plenum to the inlet grille frame.
5. Put the grille back into its frame.
Note:
nThe grille plenum may come mounted to the inlet grille on
delivery.
6. Fix the edge finishing strips to the frame.
7. Suspend the inlet section. To do so, use the supplied screw
eyes or four thread rods, M6.
Connecting unit plenum and grille plenum
8. Connect the unit plenum to the grille plenum using flexi-
ble ducts. Use hose clips to fix the ducts.
1
1
2
2
Table 2-5 Plenum duct diameter
TYPE DUCT DIAMETER
CITY S-R 160 mm
CITY M-R 160 mm
CITY L-R 250 mm