Bosch Worcester 9/14CBI Bedienungsanleitung

Bosch Group

9/14, 14/19 & 19/24CBi

USER INSTRUCTIONS &

CUSTOMER CARE GUIDE

IMPORTANT: THIS APPLIANCE IS FOR USE WITH NATURAL GAS AND LPG

THESE INSTRUCTIONS APPLY IN THE UK ONLY.

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER OR AT THE GAS METER

G. C. NUMBERS

APPLIANCE NATURAL GAS LPG

9/14CBi 41 311 50 41 311 51

14/19CBi 41 311 52 41 311 53

19/24CBi 41 311 54 41 311 55

Thank you for purchasing a Worcester gas-fired boiler.

Worcester boilers are made by Worcester Heat Systems and

the strictest quality control standards are demanded throughout

every stage of production.

Indeed, Worcester Heat Systems have led the field in

innovative appliance design and performance for more than 30

years.

The result is that your

new Worcester boiler

appliance offers you the

very best of everything -

quality, efficiency,

economical running costs,

proven reliability and

value for money.

What’s more, you also

have the assurance of our

no-nonsense 1 year parts

and labour guarantee.

And it’s backed up by

Worcester Care Call - a

complete maintenance scheme to keep your boiler operating at

peak condition and efficiency.

No wonder that more and more people are agreeing that

when it is gas, it has to be a Worcester boiler.

EXCELLENCE COMES

AS STANDARD

Page No.

Operating Instructions

.................................... 3-11

Fault and Breakdowns 12

Maintenance and

Extended Warranty

Information ............ 13-14

Guarantee Details ... 15-16

CONTENTS

GENERAL

INFORMATION

GAS SAFETY (INSTALLATION AND USE)

REGULATIONS 1998

It is the law that all gas appliances must be installed by a

competent person in accordance with the above regulations. Failure to

install appliances correctly could lead to prosecution. It is in your

interest and that of safety to ensure compliance with the law. The

manufacturers notes must not be taken, in any way, as over-riding

statutory obligations.

WARNING: This appliance must be earthed and protected by a 5

amp fuse.

ELECTRICITY SUPPLY: 230V ~ 50Hz

IMPORTANT: To get the best from your Worcester boiler please

read these instructions carefully.

In the event of a fault the appliance should not be used until the

fault has been corrected by a competent person.

BENCHMARK

The Benchmark initiative is the new code of practice to

encourage the correct installation, commissioning and servicing of

domestic central heating boilers and system equipment.

The ‘log-book’ is a vital document that must be completed by the installer

at the time of installation and handed to the householder. It confirms that

the boiler has been installed and commissioned according to the

manufacturers instructions.

Without the completion of the log-book, manufacturers may refuse to

respond to a call-out from a householder, who will be advised that he or

she must call back the installer, who has not fulfilled his obligations to

record the information required by the initiative.

It is important that:

The services and the system are properly flushed as specified.

The user is clearly instructed on the correct operation of the appliance.

The benefits of regular servicing are explained – to maintain the efficiency

and extend the life of the appliance.

GENERAL DESCRIPTION

The Worcester boilers provide a heat output of between 9-14kW

(9/14CBi), 14-19kW (14/19CBi) & 19-24kW (19/24 CBi) and contain a

temperature control and all the appropriate safety controls. They are

suitable for fully pumped open vent or sealed systems.

They can be connected to a domestic hot water supply system

through an external S or Y plan system.

Central Heating

When a demand is made for heating by the system controls

(i.e. a programmer or room thermostat). A pump will energise

circulating primary water around the heating system and the burner,

after a few seconds, will light. The heat output from the appliance in

this mode has been factory set to give maximum output or as reset by

your installer. The appliance will operate as necessary to maintain the

temperature of the radiators at the level set by the adjustment of the

boiler Temperature Control Knob. (See Fig. 1.)

If the system no longer requires output to maintain the desired

room temperature, the burner will extinguish. The pump and fan will

continue to run for a short period to dissipate the residual heat from

the appliance and then switch off.

The appliance will supply heat to the central heating system as

required.

Hot Water

A hot water cylinder will be maintained full of hot water under

the control of a cylinder thermostat.

Your installer will advise you of any actions you should take to

ensure that the satisfactory and efficient operation of the heating

and hot water systems connected to the boiler are maintained.

CENTRAL HEATING SYSTEM

During the first few hours of operation of the central heating

system, check that all radiators are being heated at an even rate.

Should the upper area of a radiator be at a lower temperature than the

base of the radiator, it should be vented by releasing air through the

venting screw at the top of each radiator. Make sure your installer

shows you how to carry out the operation. On a sealed system repeated

venting will reduce the quantity of water in the system and this must be

replenished for safe and satisfactory operation of the appliance. Should

water leaks be found in the system or excessive venting be required from

any radiator, a service engineer should be contacted and the system

corrected.

CLEARANCES

Compartment With Ventilation

Your installer will have provided adequate space around the

appliance for safety and servicing. This space must not be restricted

by the addition of cupboard shelves etc. closer to the appliance. The

following minimum clearances are required.

Compartment With No Ventilation

Your installer will have provided adequate space around the

appliance for safety and servicing. This space must not be restricted

by the addition of cupboard shelves etc. closer to the appliance.

Flammable objects must not be stored in this type of compartment.

The following minimum clearances are required.

* The clearance at the front is to be a removable panel e.g. a door. A clearance of 600mm

should be allowed with the door open.

GENERAL NOTES

9/14CBi 14/19CBi 19/24CBi

Left-hand side 5 5 5

Right-hand side 5 5 5

In Front 600 600 600

Above (Rear Only Flue) 30 30 30

Above (Flue Turret) 180 180 180

Below 200 200 200

9/14CBi 14/19CBi 19/24CBi

Left-hand side 105 105 105

Right-hand side 105 105 105

In Front* 340 340 340

Above (Rear Only Flue) 30 30 30

Above (Flue Turret) 180 180 180

Below 200 200 200

ROOM THERMOSTAT

A room thermostat may be fitted for control of the central heating

temperature. It will be located in one room of the home. The method

of setting a room thermostat varies with the type and manufacture.

Refer to the instructions supplied with the room thermostat.

PROGRAMMER/CLOCK

A programmer or clock may have been fitted to the system: the

method of setting varies with the type and manufacturer.

Refer to the instructions supplied with the control.

THERMOSTATIC RADIATOR VALVES

If thermostatic radiator valves are to be fitted to the system then

they must conform to the requirements of BS2767:10. It is advisable to

leave one valve permanently set at maximum to prevent the boiler

short cycling.

VENTILATION OF ROOM SEALED FANNED

FLUE (RSF) APPLIANCES

These appliances do not require air flow for combustion from the

room in which they are installed. Any cooling ventilation openings in

a wall or door must not be obstructed. Do not allow the flue terminal

fitted on the outside wall to become obstructed or damaged.

NOTE: Do not place anything on top of the appliance. If the

appliance is fitted in a compartment do not use the compartment for

storage purposes unless it conforms to the requirements of

BS 6798:1987: Section 6. It is essential that the airing space is

separated from the boiler space by a perforated non-combustible

partition as described in BS 6798:1987.

If the clearances are less than shown for an unvented compartment

then the compartment must be ventilated in accordance with BS5440.

FLUE TERMINAL

Do not allow the flue terminal fitted on the outside wall to

become obstructed or damaged.

CIRCULATING PUMP

The heating system will be filled with a circulating pump which

may be fitted with a speed adjuster. If so it will be set by the installer

to suit the heating load. Do not alter the setting.

FROST PRECAUTIONS

If the appliance is not to be used for a long period of time and

there is a likelihood of freezing, then the appliance should be drained.

The Worcester Heat Systems Technical Helpline will advise you on

suitable frost precautions. The boiler has an in-built frost thermostat

which will protect the appliance should the temperature of the boiler

drop below approximately 10°C.

SERVICE

Annual servicing is important in order to ensure continuing

high efficiency and long life for your appliance. In the event of any

difficulty in making suitable servicing arrangements, Worcester Heat

Systems Limited or other competent persons will discuss regular

servicing arrangements and offer a comprehensive maintenance

contract.

WARNING

If a gas leak exists, or is suspected, turn off the gas supply to the

appliance at the service cock on the meter and consult your local

service engineer.

Do not touch any electrical switches to turn them either on or off.

Open all windows and doors. Do not smoke. Extinguish all naked lights.

CLEANING

Do not use abrasive cleaners on the outer casing. Use a damp

cloth and a little detergent.

OPERATION OF

CONTROLS

BOILER HEATING TEMPERATURE

CONTROL

The position of this control will determine the temperature of

the water delivered from the appliance between the start of the dial as

indicated thus ' 'and the fully on position i.e. when the control is

turned fully clockwise. When the knob is turned fully anti-clockwise

to the ‘O’ position the appliance is off.

BOILER RESET BUTTON

If the lockout light is on or flashing, turn the temperature control

fully anticlockwise to the 'O' position and back on again. If the

appliance still fails to operate then contact Worcester Heat Systems or

your installer.

Fig. 1. Controls.

Boiler

demand

Temperature

control

Burner

Lock-out

INDICATOR LIGHTS

Boiler demand : System is calling for heat

Burner ON : Burner is firing

Lock-out : There is a fault condition

Steady light - Overheat

Flashing light - Flame failure

TO LIGHT THE APPLIANCE

Check that the water valves to the central heating circuit are open.

Check that the needle on the pressure gauge is not below the

required pressure - sealed system only.

Switch on the mains electricity. Set the room thermostat, if

fitted, to maximum. Turn the boiler temperature control fully

clockwise to the maximum position.The burner will light. Set the

boiler temperature control and the room thermostat/cylinder

thermostat, if fitted, to the desired temperature.

TO STOP THE APPLIANCE

For Short Periods

Turn the boiler temperature control fully anti-clockwise to the

‘O’ position.

For Long Periods

Turn the boiler temperature control switch to the ‘O’ position.

Switch off the mains electricity.

Any programmer will require resetting if mains supply has been

disconnected.

ELECTRICITY SUPPLY

FAILURE

If the electricity supply fails the appliance will not operate.

Once the supply is restored the appliance will return to normal

operation.

Check that the settings of any programmer or time control

have been maintained.

TO LIGHT AND STOP THE

APPLIANCE

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