Biddle DECO 50, DECO 150, DECO 75, DECO 100, DECO 125 User Manual

Manual

Fan Coil Unit

Model DECO

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

MANUAL

Version: 4.0 (19-12-2007) 3

. . . Table of contents

1 Introduction 5

1.1 About this manual 5

1.2 How to use this manual 5

1.2.1 Marginal symbols 5

1.2.2 Pictograms on the device and in the guide 6

1.2.3 Related documentation 6

1.3 About the unit 7

1.3.1 Uses 7

1.3.2 Working 7

1.3.3 Available models, and type references 7

1.3.4 Type plate 9

1.3.5 Available components and accessories 9

1.4 Safety instructions 9

1.4.1 Operation 9

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 wall duct (accessory) 12

2.4.1 Details 12

2.4.2 Mounting 13

2.5 Mounting roof duct (accessory) 13

2.5.1 Details 13

2.5.2 Mounting 14

2.6 Mounting attenuated inlet section (accessory) 15

2.6.1 Details 15

2.6.2 Mounting 16

2.7 Removing side panels from unit 16

2.8 Mounting unit 16

2.8.1 Determining mounting position and method 16

2.8.2 General 18

2.8.3 Mounting wall model 19

2.8.4 Mounting wall model to attenuated inlet section 19

2.8.5 Mounting ceiling model 20

2.9 Connecting unit (models with water heating and/or cooling) 21

2.9.1 Details 21

2.9.2 Frost protection 21

2.9.3 Connecting water pipes 22

2.9.4 Connecting condensate drain 22

2.9.5 Electrical connection 23

2.10 Connecting unit (electrically heated models) 23

2.11 Installing controller 23

2.12 Replacing side panels onto unit 24

2.13 Mounting duct sections and grilles (accessories) 24

FAN COIL UNIT

4

2.14 Switching on and checking operation 24

3 Operation 26

3.1 Introduction 26

3.2 Regulating discharge direction 26

4 Maintenance 27

4.1 Replacing or cleaning the filter 27

4.1.1 Introduction 27

4.1.2 Replacing filter 27

4.2 Cleaning the unit 28

4.2.1 Exterior 28

4.2.2 Inlet grille 28

4.2.3 Discharge grille 28

4.3 Periodical maintenance 29

5Service 31

5.1 Safety instructions 31

5.2 Opening unit 31

5.2.1 Removing side panels 31

5.2.2 Removing front panel 31

5.2.3 Opening the electronics compartment 32

5.3 Replacing fuses 32

EC declaration of agreement 36

MANUAL INTRODUCTION

Version: 4.0 (19-12-2007) 5

1 . . Introduction

1.1 About this manual

This manual describes the installation, operation and mainte­nance of the fan coil unit, model DECO. It also describes
repair operations.

This manual only relates to the unit itself. A separate manual
covers the operation and control of the unit.

1.2 How to use this manual

1.2.1 Marginal symbols

In this guide the following marginal symbols are used:

Note:

n Draws your attention to an important part of the text.

Read this part of the text carefully.

Caution:

c If you do not perform this procedure or action correctly you

can damage the device.
So follow the instructions carefully.

Warning:

w If you do not perform this procedure or action

correctly you can cause bodily injury and/or damage.

So follow the instructions carefully.

INTRODUCTION FAN COIL UNIT

6

Danger:

d This indicates actions which are not permitted.

Ignoring this warning can lead to serious damage or

accidents which may involve bodily injury.

The action concerned may only be performed by

qualified technical staff when carrying out

maintenance or repair.

1.2.2 Pictograms on the device and in the guide

The pictograms in Table 1-1 refer to possible risks and/or
dangers. You will find these pictograms in the text when risky
actions are being discussed. The same pictograms will also be
found on the device.

1.2.3 Related documentation

Besides this manual, the following documents come with this
unit:

• documentation for control and operation,

• wiring diagram for the installer.

Table 1-1 Pictograms

PICTOGRAM DESCRIPTION

Warnin g: You are entering an area which contains ‘live’ components.

Accessible to qualified maintenance staff only.
Caution is urged.

Warnin g: This surface or part can be hot. There is a risk of burns on
contact.

ê
ç

MANUAL INTRODUCTION

Version: 4.0 (19-12-2007) 7

1.3 About the unit

1.3.1 Uses

The fan coil unit is designed for heating, cooling and/or venti­lating rooms. The unit is positioned in the room in such a way
that the discharged air flow is distributed evenly across the
room without causing discomfort to the people in it.

In general illustrations in this manual, the following unit type is
used as a sample: DECO 50-H2-L-FS10. The appearance of
your unit may be different but its working is identical, unless
stated otherwise.

1.3.2 Working

The fan coil unit blows a flow of hot or cold air into the room
at an adjustable angle. The integral control automatically
determines the required volume and correct temperature of
the air. The air may be taken in either from outside (ventila

­tion) or from the room itself (re-circulation). Thus, the unit
offers two benefits:

• The room is kept at the desired temperature.

• Gradual deterioration of air quality in the room is counter-

acted.

1.3.3 Available models, and type references

Table 1-2 on page 8 provides an overview of available fan coil
unit models, and corresponding type references. Combined,
the type references constitute the type code, for instance:
DECO 50-H2-R-FS10-M. Several combinations may appear.

INTRODUCTION FAN COIL UNIT

8

Table 1-2 Type code explained

TYPE CODE ELE-

MENT

REFERENCE MEANING

model range DECO fan coil unit (general)

unit size 50, 75, 100, 125 or

150

different unit sizes

heating or cooling
coil

H1, H2 or H4 water-heated, 1-, 2- or 4-row

C2, C3 or C4 water-cooled, 2-, 3- or 4-row

H1C3 water-heated and -cooled, 1- or 3-row

connection side L water connections to the left, electric connections to the

right

R water connections to the right, electric connections to the

left

mounting method F wall model

C ceiling model

appearance S cased model ‘Stylish’ (round side panels)

B cased model ‘Business’ (straight side panels)

R chassis model (without casing)

main functions, and
hole positions

2 with re-circulation, hole in front

(with ceiling models, in bottom)

4 with re-circulation, hole in bottom

(with ceiling models, in back)

6 with ventilation, hole in back

(with ceiling models, in top)

8 with ventilation, hole in bottom

(with ceiling models, in back)

10 with re-circulation and ventilation, holes in front and back

(with ceiling models, in bottom and top)

12 with re-circulation and ventilation, holes in front and bot-

tom (with ceiling models, in bottom and back)

control M Modulating control

S Speed control

I Interface, either with or without touch pad control

B Basic, without controller (optionally with controller)

no reference not described in this manual

MANUAL INTRODUCTION

Version: 4.0 (19-12-2007) 9

1.3.4 Type plate

The type plate is located above the electrical connections on
the inside of the back panel.

The following data on the type plate are referred to in this
manual:

• ‘Type’ represents the full type code of the unit,

• ‘M’ represents the weight of the unit.

1.3.5 Available components and accessories

Components

Depending on the model and type, control components will be
required, such as a control panel, control cables, etc. (see the
documentation of the controller)

Accessories and options

The following accessories are available:

•wall duct;

• wall grate;

• roof cap;

• flexible connection sleeves, with or without connecting

flange;

• wall and ceiling grilles for recessed models, fixed or adjust-

able;

• discharge section for chassis models;

• attenuated inlet section;

• condensate discharge pump (mounted in unit, standard in

encased ceiling models with cooling).

1.4 Safety instructions

1.4.1 Operation

Warning:

w Do not put any objects in the inlet and discharge

openings.

Warning:

w Do not block the air inlet and discharge openings.

Type DECO 50-H2-R-FS10

Code 7113 U 230 V 1N~ 50 Hz

Biddle bv
Markowei 4
NL-9288 HA Kootstertille

Nº 205020/1-1 00-01 I

max

L1 0.44 A

I

max

L2 -

M36kg I

max

L3 -

Medium LPHW P

motor

0.10 kW

p

max

1400 kPa P

heating

-

Type DECO 50-H2-R-FS10-BASIS

Code U 230 V 1N~ 50 Hz

Biddle bv
Markowei 4
NL-9288 HA Kootstertille

Nº 205020/1-1 00-01 I

max

L1 0.44 A

I

max

L2 -

M36kg I

max

L3 -

Medium LPHW P

motor

0.10 kW

p

max

1400 kPa P

heating

-

INTRODUCTION FAN COIL UNIT

10

Warning:

w The top of the unit may get hot.

1.4.2 Installation, maintenance and service

Danger:

d The unit may be opened by qualified technical staff

only.

Warning:

w Perform the following actions before opening the

unit:

1. Switch the unit OFF.

2. Wait until the fans have stopped. Allow the unit to cool
down.

The heating can get very hot. Also, the fans may keep on
rotating for some while.

3. Disconnect power supply (remove plug from socket or
move main switch to OFF).

4. Close CH supply (if possible).

Warning:

w The fins of the heat exchanger may be sharp.

ç

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 11

2 . . Installation

2.1 Safety instructions

Danger:

d Installation works on the unit may be performed by

qualified technical staff only.

Warning:

w Before opening the unit, follow the safety instruc-

tions in section 1.4.

2.2 Delivery check

• Check the unit and its packaging for correct delivery.
Immediately report to the supplier any damage caused in
transit.

• Check whether all parts are included.

2.3 General working method

• Biddle recommends following the order of working
described in this chapter for performing the installation
works.

• Some parts of this section are applicable only to certain
models of the fan coil unit. Where this is the case, it will
be indicated so. If no specific model is referred to, the
description will apply to all models.

Note:

n Make sure you perform all installation operations that are

required for your unit.

Check the type plate. Refer to section 1.3.3 ’Available
models, and type references’ if you are not sure about the
model or type of your unit.

INSTALLATION FAN COIL UNIT

12

Caution:

c Taking in building dust, grit, cement powder etc. may dam-

age the unit. While such substances are present in the
room:

-do not start to use the device,

- cover air intake and discharge openings.

You may cover the unit with the packaging material.

Cased models

Caution:

c Do not lift the unit at the side panels.

2.4 Mounting wall duct (accessory)

2.4.1 Details

The wall duct is made up of two parts which, when slid into
one another, are suitable for various wall thicknesses.

Table 2-1 Wall duc t dim ensions

DECO 50DECO 75DECO

100

DECO

125

DECO

150

size A (width of hole) 503 753 1003 1253 1503

size B (distance from unit base to hole) 17.5 – 32.5

(The unit’s standing height is adjustable.)

size C (wall thickness) 205 – 355 or 350 – 650 (depending on model)

• All dimensions are in mm.

• Size B relates only to standing wall models.

142 x A

B

C

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 13

2.4.2 Mounting

Caution:

c Mount the wall duct carefully, and provide for proper

sealing. Otherwise draught and condensation problems
may occur, affecting the operation of the fan coil unit.

1. Apply expanding foam gasket (included) around the unit’s
ventilation opening (the shaded area in the figure).

2. Make an opening through the wall (see Table 2-1 for
dimensions).

3. Fix the duct sections as you please, e.g., by bricking them
in or by fixing them with screws. In doing so, note the
positions of the screws: these must not hinder the installa

-

tion of the grate.

4. Carefully seal all seams and cracks with a sealant.

5. On the flanges of the duct section that is fixed to the outer
wall: drill through the grate holes using a

Ø 5 mm drill.

6. Apply sealant to the inner side of the grate flanges, pro­perly sealing the gap between grate and duct.

7. Mount the grate to the flanges using sheet metal screws.

Note:

n In doing so, note the correct position of the blades: these

should be oriented outward to allow for run-off.

8. Finish the wall duct in a draught-proof manner.

2.5 Mounting roof duct (accessory)

2.5.1 Details

The roof duct is made up of two parts: a cap and a pipe. On
delivery, the two parts are attached to one another.

The roof duct is mounted to a roof curb. The roof curb is not
included in the delivery, and is to be made on site.

INSTALLATION FAN COIL UNIT

14

2.5.2 Mounting

Caution:

c Mount the roof duct carefully, and provide for proper seal-

ing. Otherwise draught and condensation problems may
occur, affecting the operation of the fan coil unit.

1. Apply expanding foam gasket (included) around the unit’s
ventilation opening (the shaded area in the figure).

2. Make an opening through the roof (see Table 2-2 for
dimensions).

Table 2-2 Roof duct dimensions

DECO 50 DECO 75 DECO 100 DECO 125 DECO 150

size A 494 744 994 1244 1494

size B 503 753 1003 1253 1503

size C 678 928 1178 1428 1678

• All dimensions are in mm.

530

445

50

325

139

600

C

A

70

cap

pipe

curb

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 15

3. Make the curb around the opening. Apply roofing felt or
bitumen onto the curb, making it watertight.

4. Remove the cap from the pipe. To do so, loosen the
screws in the upper side of the cap.

5. Slide the pipe into the roof opening, and fix it to the curb.

6. Mount the cap to the pipe.

7. Seal all cracks that have arisen during installation, making
the unit draught- and leakage-proof.

2.6 Mounting attenuated inlet section (accessory)

2.6.1 Details

The attenuated inlet section will be fixed to the wall. Next, the
unit will be fixed to the inlet section.

Table 2-3 Wall duct dimensions for inlet section

DECO 50DECO 75DECO

100

DECO

125

DECO

150

size C 503 753 1003 1253 1503

• All dimensions are in mm.

451,5 - 466,5 142 x C

INSTALLATION FAN COIL UNIT

16

2.6.2 Mounting

1. Apply expanding foam gasket (included) around the inlet
section’s ventilation opening.

2. Make an opening through the wall (see Table 2-3 for
dimensions).

3. Fix four M8 bolts into the wall. (The dimensions are identi­cal to those for fixing the unit: see Table 2-4 on page 18.)
Make sure the bolts are level.

4. Suspend the inlet section from the bolts using the key­holes in the back.

5. Tighten the bolts.

2.7 Removing side panels from unit

Cased models only

To make the unit accessible for mounting it and for con­necting water pipes and/or electric wiring, the side panels
must be removed.

1. Loosen the quarter-turn fasteners, and remove the filter
frame.

2. Behind the frame, each face has a screw 1 that holds the
side panel in place. Remove this screw.

3. Lift the panel carefully, and remove it forward.

2.8 Mounting unit

2.8.1 Determining mounting position and method

All models

• Make sure the structure from which the fan coil unit is to
be suspended is capable of bearing the unit. The weight is
specified on the type plate (see section

1.3.4).

• Ensure the air can flow freely through the unit’s inlet and
discharge openings.

• Position the unit such that the connections will be easy to
access both during and after installation.

1

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 17

Wal l mode ls

• Position the unit on an as level as possible surface for
maximum support. Level the unit using the adjusting feet.

• The unit can also be suspended from the wall using the
four keyholes in the back.

• If the unit is positioned on the floor, there is no need for
securing it, but if you do, use the keyholes in the back.

Wall models with ventilation

• Provide for proper support. Otherwise, the ventilation
valve will not close properly, and draught may occur.

• If fresh air is let in, it is recommended to secure the unit to
the wall to ensure the wall duct is properly sealed.

Wall models with attenuated inlet section

• Position the unit on the floor, securing it to the inlet sec­tion.

• You may also suspend the unit from the inlet section with­out support.

Ceiling models

• The unit can be suspended from the ceiling using the four
keyholes in the back.

• Another option is to suspend the unit from threaded rods.

Cased models

• After installation, it should still be possible to remove the
side and front panels to gain access to the connections.

INSTALLATION FAN COIL UNIT

18

Chassis models

• After installation, it should still be possible to remove the
casing to gain access to the connections.

Chassis models with re-circulation

(DECO FR4, CR4)

• Do NOT position the unit such that its bottom is on the
floor or against the wall. Ensure the distance to the floor
or wall is at least 120 mm.

2.8.2 General

Caution:

c Level the unit.

Otherwise, air will be left in the coil, or (in units with cool­ing) condensate will not drain off properly.

Table 2-4 Unit mounting dimensions

DECO 50DECO 75DECO

100

DECO

125

DECO

150

size A 644 894 1144 1394 1644

size B 288 288 288 288 288

size C ceiling models 213 213 213 213 213

wall models 218

- 232

218

- 232

218

- 232

218

- 232

218

- 232

chassis re-circulation models
(DECO FR4, CR4)

71 71 71 71 71

• All dimensions are in mm.

A

B

C

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 19

2.8.3 Mounting wall model

Floor positioning

1. Position the unit on the surface, and stabilise and level it
using the adjusting feet in the bottom.

2. You may want to secure the unit to the wall. (See below.)

Suspending from or securing to wall

1. Apply four M8 bolts. (For dimensions, see Table 2-4.)
Ensure the bolts are level.

2. Suspend the unit from the bolts. Perform this with at least
two persons. (The unit’s weight is specified on the type
plate, see section

1.3.4.)

3. Tighten the bolts.

4. Check the suspension for stability:

- Try to push the unit from the bolts.

- Shake the unit for a few seconds.

2.8.4 Mounting wall model to attenuated inlet section

Floor positioning

1. Position the unit against the inlet section at equal heights
on the floor. The edge of the inlet section should enclose
the back panel of the unit.

2. Stabilise and level the unit using the adjusting feet in the
bottom.

3. Secure the unit to the inlet section using 4 M8 bolts,
through the keyholes in the back panel.

Suspending from inlet section

1. Ensure the unit has the same height as the inlet section by
using a temporary prop.

Note:

n It is not possible to hook the unit onto the inlet section

using the keyholes.

2. Place the unit against the inlet section: the edge of the inlet
section should enclose the back panel of the unit.

INSTALLATION FAN COIL UNIT

20

3. Fix the unit to the inlet section using 4 M8 bolts, through
the keyholes in the back panel.

4. Remove the temporary prop from underneath the unit.

5. Check the suspension for stability:

- Try to push the unit from the bolts.

- Shake the unit for a few seconds.

2.8.5 Mounting ceiling model

Suspending directly from ceiling

Suspension using screws 1. Fix four screws or bolts of a maximum diameter of 8 mm.

(For dimensions, see

Table 2-4.)

2. Suspend the unit. Perform this with at least two persons.
(The unit’s weight is specified on the type plate, see
section

1.3.4.)

3. Use the included locking rings with slotted holes: insert the
locking rings

3 between the bolt or screw head and the

panel.

4. Tighten the screws or bolts onto the panel.

5. Check the suspension for stability:

- Try to push the unit from the bolts or screws.

- Shake the unit for a few seconds.

Suspending from threaded rods

Suspension using threaded rods 1. Fix four M8 threaded rods. (For dimensions, see Table 2-4.)

Make sure the threaded ends are perpendicular.

2. Provide each threaded end with two nuts (1 and 2) with
a mutual space of some centimetres.

3. Suspend the unit from the lower nuts. Perform this with at
least two persons. (The unit’s weight is specified on the
type plate, see section

1.3.4.)

4. Use the included locking rings with slotted holes: insert the
locking rings

3 between the nuts 2 and the panel.

5. Tighten the upper nuts 1 onto the panel.

6. Check the suspension for stability:

- Try to push the unit from the nuts.

- Shake the unit for a few seconds.

3

1

2

3

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 21

2.9 Connecting unit (models with water heating and/or cooling)

2.9.1 Details

• Depending on the model and type, the connections have
female-thread fittings or compression fittings.

• The unit may come with premounted control valves, to
which the CH and/or CW system is (are) to be connected.

• The supply and return connections of heat exchangers are
indicated with arrows:

- red arrows: heating

- blue arrows: cooling

• The (1/8") vent cocks are mounted to the collectors. They
can be opened using the included key.

• The maximum operating pressure depends on the water
temperature: see

Table 2-5.

Note:

n Biddle recommends the inclusion of a valve in each pipe.

Cased models

• Allow for cable and pipe entries.

Connection can be done through the bottom or, after
removal of the filling piece, through the side panel open

­ing. With ceiling models, the bottom panel must be
removed to enable connection through the bottom.

2.9.2 Frost protection

Models with ventilation only

Depending on the control system, the unit has a frost protec­tion thermostat or a controller-integrated protection.

Table 2-5 Operating pressure in CH/CW system

TEMPERATURE OPERATING PRESSURE

20 °C 16 bar

93 °C 10 bar

110 °C 6 bar

filling

INSTALLATION FAN COIL UNIT

22

Caution:

c The frost protection reduces the risk of freezing but does

not warrant 100% protection.

To prevent the heat exchanger from freezing:

- ensure a constant circulation of water at a correct tem­perature;

- when not in operation during the wintertime, glycol
must be added to the water.

2.9.3 Connecting water pipes

1. Lay the water pipes, and connect them to the heat
exchanger.

Caution:

c Tighten the compression fittings well.

2. Fill the CH and/or CW system.

3. Vent the heat exchanger.

4. Check the connections for leaks.

2.9.4 Connecting condensate drain

Models with water cooling only

The unit comes with a condensate drain tray with a Ø 15 mm
drain pipe.

Ceiling models with both casing and cooling come as standard
with a condensate discharge pump.

1. Install a sewer connection incl. stink trap for the discharge
of condensate.

2. Connect the condensate drain tray to a flexible hose.

3. Connect the hose, with a stink trap, to the sewer.

4. Insulate the pipes that are not hanging over the conden­sate drain tray.

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 23

2.9.5 Electrical connection

• Ensure an earthed (grounded) power point is available at
no more than 1.5 m from the unit’s connection side
(depending on model).

Warning:

w The unit must be earthed (grounded).

2.10 Connecting unit (electrically heated models)

Warning:

w Ensure the mains supply group you are working on

is switched off.

1. Install an all-pole switch with a minimum contact distance
of 3 mm.

2. Connect the switch to the mains.

Caution:

c Do not yet apply voltage to the circuit.

Warning:

w The unit must be earthed (grounded).

2.11 Installing controller

Depending on the type, the unit can be fitted with electronic
operation and/or control. Install these according to the res

-

pective manuals.

The connections are located on the electronics compartment
or on the control unit's PCB in the compartment. (see Sec

-

tion 5.2.3)

Supply voltage:
400 V 3N~50 Hz

123N

contact dis­tance 3mm

123N

INSTALLATION FAN COIL UNIT

24

2.12 Replacing side panels onto unit

Cased models only

1. Hook the side panels into the three eyes on the unit’s side
face.

2. Fix the panel to the front face using screw 1.

3. Position the filter frame, and fix it with the quarter-turn
fasteners.

2.13 Mounting duct sections and grilles (accessories)

Chassis models only

The unit may be provided with flexible connection sleeves or
with flanges to which duct sections or grilles can be con

­nected. Mounting these parts depends on the local situation,
and is to be carried out according to your own judgment. Fol

­low the below instructions in order not to affect the unit’s
performance:

• Avoid abrupt duct transitions.

• Keep ducts as short as possible.

• Do not apply any grille that is much smaller than the unit

opening.

• Mount flexible connection sleeves to the inlet opening

under tension; this is to prevent the connection sleeve
from being closed at high fan speeds.

2.14 Switching on and checking operation

All models

1. Check the power supply connection.

2. Check the controller connections (see the corresponding

documentation).

3. Switch on the mains supply.

4. Make the controller ready for use according to the appro-

priate manual.

1

MANUAL INSTALLATION

Version: 4.0 (19-12-2007) 25

5. Switch on the unit using the controller. Check whether the
unit blows out air.

Models with water heating and/or cooling

Check if the heat exchanger is connected correctly:

1. Make sure the CH and/or CW system is (are) switched on.

2. Let the unit heat and/or cool using the controller.

3. Feel whether the discharged air flow is getting hot (if
heating) or cold (if cooling). This may take a little while.

4. Vent the heat exchanger, if necessary.

Models with cooling and condensate discharge pump

Check the working of the condensate discharge pump:

1. Pour water into the condensate drain tray. The conden­sate pump should start working shortly.

Models with ventilation

1. Check the seal of the fresh air duct: it should be draught­free.

For models with ventilation and recirculation

2. Let the unit ventilate and recirculate using the controller.
Check whether the air valve moves to the right positions.

3. Check whether the air valve closes correctly in both open
and closed position.

If the valve does not close correctly, the unit may not be
level or properly supported. Correct this.

4. Switch the power off, and check if the valve opening closes
automatically.

5. Switch the power on again, and recheck the valve for nor­mal operation.

OPERATION FAN COIL UNIT

26

3. . Operation

3.1 Introduction

The unit allows you to regulate the direction of the dis­charged air.

Other control options depend on the control system. For
that, refer to the relevant documentation.

3.2 Regulating discharge direction

Standard in cased models, accessory in chassis models

The discharge grille has one or more handles to regulate the
discharge direction. Pull the handle out, and push it in the
desired direction.

Consider the following when setting the direction:

• It is recommended to discharge cold air into a room along
a surface (e.g., a wall or ceiling).

• Discharge hot air directly, at a slight angle, into the room.

• Do not direct the air flow to areas where persons are stay­ing for longer periods of time, such as workplaces.

MANUAL MAINTENANCE

Version: 4.0 (19-12-2007) 27

4 . . Maintenance

4.1 Replacing or cleaning the filter

4.1.1 Introduction

The filter must be replaced regularly. A dirty filter may cause
inadequate heating, cooling or ventilation as well as a high
noise level. The interval at which the filter is to be replaced
depends on the local situation.

New filters are available from Biddle. You may also clean the
filter material with, for instance, a vacuum cleaner. After some
cleanings, however, the filter must be replaced.

4.1.2 Replacing filter

Cased models

1. Remove the filter frame at the bottom of the unit. To do
so, turn two quarter-turn fasteners such that the screw
slots are in vertical position.

2. Pull the frame and the filter material gently out of the unit.
If you handle the filter too roughly, dust may fall out.

3. Replace or clean the filter.

Chassis models

1. Remove (part of) the unit’s surrounds.

2. Pull the frame and the filter material gently out of the unit.
If you handle the filter too roughly, dust may fall out.

3. Replace or clean the filter.

MAINTENANCE FAN COIL UNIT

28

4.2 Cleaning the unit

4.2.1 Exterior

You may clean the exterior of the unit with a damp cloth and a
domestic cleaner. Do not use any solvents.

Caution:

c Make sure no water runs into the unit.

4.2.2 Inlet grille

You may clean the inlet grille of the unit with a damp cloth and
a domestic cleaner. Do not use any solvents.

4.2.3 Discharge grille

Should coffee or the like fall into the unit, clean the discharge
grille.

If the contamination has penetrated deeply into the unit, you
should have the unit cleaned by an installer.

Dismounting the discharge grille

The panels may be cleaned in a dishwasher at low tempera­ture. To do so, the discharge grille must be dismounted.

Warning:

w Before opening the unit, observe the safety instruc-

tions in section 1.4.

1. Remove the filter frame at the bottom of the unit. To do
so, turn two quarter-turn fasteners such that the screw
slots are in vertical position.

2. Behind the frame, there are two screws 1 that hold the
side panels in place. Remove the screws.

3. Unhook the panel gently, and pull it forward.

4. Dismount the discharge grille by loosening the two
screws

2 on both sides of the grille.

5. Take the grille from the unit, and turn it round.

1

MANUAL MAINTENANCE

Version: 4.0 (19-12-2007) 29

6. Remove the pins and leaf springs, and take the panels out
of the grille.

7. Clean the different panels, for instance, in a dishwasher at
low temperature.

8. Remount the components in reverse order to dismounting.

4.3 Periodical maintenance

Biddle recommends to have the following inspection and main­tenance works performed by an installer each year.

All models

• Check if the filter is clean enough, and not damaged.
Replace the filter if necessary (see section

4.1).

• Check the discharge grille for contamination, and clean it if
necessary (see section

4.2.3).

• Check if the heat exchanger or the electric heating coils
are clean. Settled dust may cause unpleasant smells.

Gently remove dust with a vacuum cleaner.

Caution:

c The fins of the heat exchanger are delicate parts. Do not

damage them.

• Check the operation of the fans.

Models with ventilation

• Check if the ventilation valve closes properly in both posi­tions.

• Check if the valve automatically falls to shut if the power
supply is interrupted.

All models with cooling

• Check if the condensate drain tray and pipe are clean.
Contamination may lead to poor drainage and to growth of
bacteria and fungi.

2

MAINTENANCE FAN COIL UNIT

30

Wall models with cooling

• Inspect the filter of the condensate discharge pump (acces­sory) in the float module.

Ceiling models with cooling

• Check if the condensate discharge pump (accessory) can
take in freely.

MANUAL SERVICE

Version: 4.0 (19-12-2007) 31

5 . . Service

5.1 Safety instructions

Danger:

d Service on the unit may be performed by qualified

technical staff only.

Warning:

w Before opening the unit, follow the safety instruc-

tions in section 1.4.

5.2 Opening unit

5.2.1 Removing side panels

Cased models only

1. Loosen the quarter-turn fasteners, and remove the filter
frame.

2. Behind the frame, each face has a screw 1 that holds the
side panel in place. Remove this screw.

3. Lift the panel carefully, and remove it forward.

5.2.2 Removing front panel

Cased models

1. Remove the side panels. (see section 5.2.1)

2. Each side of the front panel has two screws 1: loosen
them.

3. Remove the front panel.

1

1

1

SERVICE FAN COIL UNIT

32

Chassis models

1. Remove the surrounds.

2. Each side of the front panel has one screw 1: loosen

them.

3. Remove the front panel.

5.2.3 Opening the electronics compartment

1. Remove the unit’s side panels (see section 5.2.1) or sur­rounds.

2. Remove the electronics cover:

- loosen the screw 1 on the front side;

-slide 2 the cover forward.

5.3 Replacing fuses

Transformer fuse

The fuse holder can be found on the electronics compart­ment at 1. The rating is stated next to the fuse holder.

Operation and/or control unit fuses

Only for control type I

The fuse is located on the PCB in the electronics compart­ment

1

1

2

1

MANUAL

Version: 4.0 (19-12-2007) 33

(This page is intentionally blank.)

FAN COIL UNIT

34

(This page is intentionally blank.)

MANUAL

Version: 4.0 (19-12-2007) 35

(This page is intentionally blank.)

manufacturer:

Biddle BV

a

ddress:

Markowei 4

9288 HA Kootstertille
The Netherlands

We declare that the following product:

product description:

Fan Coil Unit

b

rand: Biddle

m

odel: DECO and SL

t

ype: DECO

-

50/75/100/125/150

SL-50/75/100/125/150

In accordance with the following Directives:

2006/95/EC

2006/42/EC

the Low Voltage Directive

the Machinery Directive

2004/108/EC

the Electromagnetic Compatibility Directive

Has been designed and manufactured to the following specifications:

EN 61000

-6-2

Elec

tromagnetic Compatibility (EMC)

-- Part 6

-

1: Generic

standards – Immunity for industrial environments

EN 61000

-6-3

Electromagnetic Compatibility (EMC)

-- Part 6

-

3: Generic

standards – Emission standard for residential, commercial and
light-industrial environments

EN 60335

-1

(including A14)

Safety of household and similar electrical appliances

Part 1: General requirements

EN 60335

-2-30 Safety of household and similar electrical appliances

Part 2-30: Particular requirements for room heaters

I hereb

y declare that the equipment named above has been designed to comply with the relevant sections

of the above referenced specifications. The unit complies with all essentials requirements of the directives.

signed by:

W. de Vries

, Managing Director

,

2012

Declaration of Conformity