Bedienungsanleitung Worcester-Bosch 350 Combi (Seite 3 von 4) (Englisch)

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The Worcester

350

a combination boiler which will supply

mains fed domestic hot water plus central heating

output

between 9.0 and 25

kW.

HOT

WATER

PROVISION

When a

tap

turned

the appliance

will

begin

operate. Hot

water

will

become available

the tap

a continuous supply

constant

temperature, after a short delay, depending

when

the

appliance was last fired. The fan

will

continue to run

for

a few

seconds after the tap has been turned

off,

to remove any residual

heat from the appliance.

CENTRAL

HEATING

AND

HOT

WATER

PROVISION

demand

for

hot water

will

take priority over the supply of

heat

the

central heating system. The

burner

will

remain

off for

approximately three minutes after the demand

for

hot

water

completed

before

automatically

returning to

central

heating

operation.

CENTRAL

HEATING

PROVISION

When a demand

made

for

central heating the burner

will

light

its minimum

output

before rising to

the

preset

maximum

output. The appliance

will

then automatically

match

output

the

system load.

the event of

the

system requiring less

than

l<W,

the

burner will light only periodically

maintain

system

temperature.

When

the

automatic

controls close

the

burner

down, the fan

will

continue to operate

for

few

seconds.

The

appliance

Serial

Number

must

quoted

any

correspondence.

will

comprise

C350RSF

and a 1 0-digit number.

It can be seen through the lower opening

the inner cover panel

accessible

removing the cabinet front panel.

CENTRAL HEATING

AND

HOT

WATER

PROGRAMME

CONTROL

Your

Worcester

350

fitted with either a 3-position Operating

Switch or

Electronic Programmer

the

facia panel for

the

control of domestic hot water and central heating.

OPERATING

SWITCH

The switch offers the following positions:

WATER

The

appliance

will

provide

hot

water

when a tap or shower

turned on.

OFF

Both

the

central heating

and

domestic

hot

water

will

remain

off.

HEATING

WATER

The

central~heating

will

operate

response

any

system

controls

and

domestic hot water

will

be supplied when

a tap or shower

turned on.

ELECTRONIC

PROGRAMMER

Your

Installer

may

have

mounted

the

optional

electronic

programmer

the appliance facia panel.

For

full

details

how

operate

the

Programmer

please

refer

the

Operating

Instructions which are supplied with the Programmer.

CENTRAL

HEATING

TEMPERATURE

CONTROL

The

temperature control knob

the facia panel allows control

of the water temperature to the radiators.

INDICATOR

LIGHTS

There are three indicator lights

the

facia panel.

The

red light when

indicates

that

the system pressure

too

low (see System Operation). The amber light when

indicates

that

the

mains electricity to

the

appliance

on.

The

green light

when

indicates

that

the

appliance

supplying

either

domestic hot water or central heating.

PRESSURE

GAUGE

pressure

gauge

located

the

facia

panel.

The

green

pressure needle

has

been

preset

show

the

water

pressure

which is required for

the

appliance to operate effectively. The

white pressure needle

will

show

the

amount

of water pressure

your particular system.

the

pressure drops below the required

minimum

pressure

the

red

indicator

will light. For remedial

action please refer to System Operation.

slightly reducing the flow of domestic hot water from the tap,

the temperature of the

water

will increase. This

of particular

advantage

the

winter, for

example

to increase

bath

water

temperature and to remove heavy grease deposits

plates, etc.

Also

this

will

provide an

added

advantage of reducing

the

delay

before

hot

water

obtained.

The

maximum discharge temperature of hot water to the taps

preset

the factory.

LIGHT

THE

APPLIANCE

Make sure

that

the appliance is off by:

(a)

Positioning the Operating Switch or Programmer to

OFF.

(b)

Switching

the

mains electricity

off.

Turn

the gas service cock

and

check

that

all

the water valves

the

central heating

supply

are open. Check

that

the

white

needle

the pressure gauge

not

below the required pressure.

See

Fig.

Switch

the

mains

electricity

and

turn

the

central

heating

temperature control knob to max. Set the Operating Switch

(or

Programmer) to

HEATING

WATER.

This will light

the

main

burner.

The

burner

can

seen

through

the

sightglass

which

accessible by removing

the

cabinet front panel.

remove the

panel, pull it away

the

bottom

and

lift

off

the

top support.

Set

the

Operating

Switch

(or

Programmer)

the

required

position.

a room thermostat

fitted to

the

system,

set

the

desired

temperature. Set the central heating temperature control knob to

the required position.

FAILURE

LIGHT

the

appliance fails to light

it locks our during operation,

switch

the

operating

switch

OFF

and

then

ON.

the

appliance fails to light after several

attempts

ignition check

the overheat thermostat by pressing the reset button.

the event

that

the problem continues call a Service Engineer.

STOP

THE

APPLIANCE

For Short Periods

Set the Operating Switch (or programmer) to

OFF.

For Long Periods

Set the Operating Switch (or programmer) to

OFF.

Switch off the mains electricity. The facia mounted programmer

will retain its settings for

about

four weeks after which it

will

return to the factory

set

programme. The display

will

disappear

after approximately 12 hours.

Worcester-Bosch 350 Combi Seite 3

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