Bosch Worcester Digital Twin Channel Programmer Manual

UK/IE

INSTALLATION & OPERATING INSTRUCTIONS

DIGITAL TWIN CHANNEL

PROGRAMMER

OFF

ONCE

TIMED

HOT WATER

ADVANCE ADVANCE

SET?

YES

SELECT SELECT

CENTRAL HEATING

OFF

ONCE

TIMED

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-00.1Wo

FOR USE WITH THE FOLLOWING GREENSTAR HIGH EFFICIENCY APPLIANCES:

GREENSTAR HE 25, 27, 30 COMBI

GREENSTAR HE R25, R30 COMBI

GREENSTAR HIGHFLOW 440 COMBI

GREENSTAR HE 27, 28 SYSTEM

GREENSTAR HE R28 SYSTEM

6 720 642 251 (2009/11)

CONTENTS

6 720 642 251 (2009/11)

CONTENTS

1 Symbols and safety precautions 3

1.1 Explanation of symbols 3

1.2 Safety precautions 3

2 General information 4

3 Fitting the programmer 6

4 Programmer controls 7

4.1 Central heating 7

4.2 Hot water 8

4.3 Pre-set program 9

4.4 Setting the time 10

4.5 Setting the date 12

4.6 Setting the programs 14

4.6.1 Setting CH Mon - Fri 14

4.6.2 Setting HW Mon - Fri 16

4.6.3 Setting individual weekdays 17

4.6.4 Setting CH individual weekdays: 17

4.6.5 Setting HW individual weekdays 19

4.6.6 Setting CH sat - sun 20

4.6.7 Setting HW sat - sun: 21

4.6.8 Setting individual weekend days: 22

4.6.9 Setting CH individual weekend days 22

4.6.10Setting HW individual weekend days 24

4.6.11Testing the programmes 25

4.6.12Setting holidays 26

5 MAINTENANCE AND SPARES 28

5.1 Maintenance 28

5.2 Servicing 28

5.3 Replacement parts 28

SYMBOLS AND SAFETY PRECAUTIONS

6 720 642 251 (2009/11)

1 SYMBOLS AND SAFETY PRECAUTIONS

1.1 EXPLANATION OF SYMBOLS

WARNING SYMBOLS

Signal words indicate the seriousness of the

hazard in terms of the consequences of not

following the safety instructions.

•NOTICE indicates possible damage to

property or equipment, but where there is no

risk of personal injury.

•CAUTION indicates possible personal injury.

•WARNING indicates possible severe personal

injury.

•DANGER indicates possible risk of life.

IMPORTANT INFORMATION

ADDITIONAL SYMBOLS

1.2 SAFETY PRECAUTIONS

IF YOU SMELL GAS:

BDO NOT SMOKE OR STRIKE MATCHES

BDO NOT TURN ELECTRICAL SWITCHES ON

OR OFF

BPUT OUT NAKED FLAMES

BOPEN DOORS AND WINDOWS

BKEEP PEOPLE AWAY FROM THE AFFECTED

AREA

BTURN OFF THE CONTROL VALVE AT THE GAS

METER

BCALL YOUR GAS COMPANY

BCALL THE EMERGENCY NUMBER 0800 111

999

APPLIANCE OPERATION

This appliance must only be operated by a

responsible adult who has be instructed in,

understands and is aware of the appliance‘s

operating conditions and effects.

Safety instructions in this document

are framed and identified by a

warning triangle which is printed on

a grey background.

Electrical hazards are identified by

a lightning symbol surrounded by a

warning triangle.

Notes contain important information

in cases where there is no risk of

personal injury or material losses and

are identified by the symbol shown

on the left. They are bordered by

horizontal lines above and below the

text.

Symbol Meaning

Ba step in an action sequence

Æa reference to a related part in

the document or to other related

documents

•a list entry

–a list entry (second level)

Tab. 1 Symbols

GENERAL INFORMATION

6 720 642 251 (2009/11)

2 GENERAL INFORMATION

SPECIFICATIONS

•Twin channel programmer for CH and DHW

mounted into the boiler fascia

•Factory set date and time

•Automatic switch over to and from Day light

savings time (GMT - BST)

•Seven day programmer

•Three ON/OFF periods per day

•Pre-programmed ON/OFF periods

•Dedicated advance buttons

•12 hour digital display

•Holiday functions

•Pre-wired connector

OFF

ONCE

TIMED

HOT WATER

ADVANCE ADVANCE

SET?

YES

SELECT SELECT

CENTRAL HEATING

OFF

ONCE

TIMED

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-00.1Wo

GENERAL INFORMATION

6 720 642 251 (2009/11)

TECHNICAL DATA

DESCRIPTION UNITS PROGRAMMER

Electrical supply Volts d.c. 24

Ambient operating temperatures °C 0 to +50

Humidity operating range % non-condensing up to 45° 30 - 95

Class of protection II

Degree of protection IP 20

Battery back up: programme Always

Battery back up: time Always

Battery back up: display hours None

Shortest switching period minutes 1

DHW & CH on/off periods number/days 3

DHW & CH programmes days 7

Tab. 2

FITTING THE PROGRAMMER

6 720 642 251 (2009/11)

3 FITTING THE PROGRAMMER

1. Refer to the applicable appliance manual for

instructions and remove the outer casing.

2. Remove the fascia cover plate by releasing the

clip at the top and withdraw the cover plate

from the front.

3. Connect the programmer plug to the four way

connection on the PCB, see figure below.

4. Push the programmer into position ensuring

that the lead is not trapped and the clip is

properly engaged.

5. Replace the appliance casing.

WARNING: Disconnect the electrical mains supply and turn off the gas supply before

working on the appliance.

ST5

6720642251-52.1Wo

PROGRAMMER CONTROLS

6 720 642 251 (2009/11)

4 PROGRAMMER CONTROLS

4.1 CENTRAL HEATING

1. Press SELECT button to choose:

BOFF = constantly off

BTIMED = up to three ON and three OFF time

periods as per programme

BONCE = ON from first ON and OFF after the

third OFF period

BON = constantly on

2. Press ADVANCE button:

BCENTRAL HEATING light on (heating stays on

until next OFF period)

-or-

BCENTRAL HEATING light off (heating stays off

until next ON period)

ADVANCE

SELECT

CENTRAL HEATING

OFF

ONCE

TIMED

OG? DATE? HDAY?

HU FRI SAT SUN

CH ON

OFF

ADVANCE

SELECT

CENTRAL HEATING

OFF

ONCE

TIMED

OG? DATE? HDAY?

HU FRI SAT SUN

CH ON

OFF

6720642251-01.1Wo

ADVANCE will not function with

constant ON or OFF selected.

PROGRAMMER CONTROLS

6 720 642 251 (2009/11)

4.2 HOT WATER

1. Press SELECT button to choose:

BOFF = constantly off

BTIMED = up to three ON and three OFF time

periods as per programme

BONCE = ON from first ON and OFF after the

third OFF period

BON = constantly on

2. Press ADVANCE button:

BHOT WATER light on (hot water stays on until

next OFF period)

-or-

BHOT WATER light off (hot water stays off until

next ON period)

OFF

ONCE

TIMED

HOT WATER

ADVANCE SET?

YES

SELECT

TEST? CLOCK? P

MON TUE WED

OFF

ONCE

TIMED

HOT WATER

ADVANCE SET?

YES

SELECT

TEST? CLOCK? P

MON TUE WED

6720642251-02.1Wo

ADVANCE will not function with

constant ON or OFF selected.

PROGRAMMER CONTROLS

6 720 642 251 (2009/11)

4.3 PRE-SET PROGRAM

If you need to restore the factory preset

program times then:

1. Press the SET? and PLUS buttons together to

restore the default program times as shown in

table 3.

OFF

ONCE

TIMED

HOT WATER

ADVANCE ADVANCE

SET?

YES

SELECT SELECT

CENTRAL HEATING

OFF

ONCE

TIMED

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-03.1Wo

Two ON/OFF periods can be used

instead of three by setting the 2nd

ON/OFF times to 12:00 as shown in

the default table 3.

One ON/OFF period can be

achieved by setting the 2nd and 3rd

ON/OFF times to the same time.

See page 14 SETTING PROGRAMS

if changes are required to the pre-

programmed settings.

1st 1st 2nd 2nd 3rd 3rd

ON OFF ON OFF ON OFF

AM AM PM PM PM PM

Central heating

MON to FRI

Time 6:30 8:30 12:00 12:00 4:30 10:30

SAT & SUN

Time 7:00 9:00 12:00 12:00 4:00 11:00

Hot water

MON to FRI

Time 6:30 8:30 12:00 12:00 4:30 10:30

SAT & SUN

Time 7:00 9:00 12:00 12:00 4:00 11:00

Tab. 3 Default program periods

PROGRAMMER CONTROLS

6 720 642 251 (2009/11)

4.4 SETTING THE TIME

1. Press the SET? button to show SET and

CLOCK? in the display.

2. Press YES to display the time with the hours

flashing.

3. Press the PLUS or MINUS button to correct

the hour, taking note of the AM or PM shown.

The time is preset and normally does not need to be adjusted.

British Summer Time and GMT changes are adjusted automatically.

Press SET? repeatedly to step through “Setting the time” to reach the next section

SET?

YES

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-04.1Wo

SET?

YES

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-05.1Wo

SET?

YES

TEST? CLOCK? PROG? DATE? HDAY?

MON TUE WED THU FRI SAT SUN

CH ON

OFF

6720642251-06.1Wo

Hold down either the PLUS or

MINUS button to speed up the

display changes.

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