MANUAL INFORMATION
PLEASE READ THESE INSTRUCTIONS
CAREFULLY BEFORE STARTING
THESE INSTRUCTIONS ARE APPLICABLE TO
THE WORCESTER BOSCH MODEL(S) STAT-
ED ON THE FRONT COVER OF THIS MANUAL
ONLY AND MUST NOT BE USED WITH ANY
OTHER MAKE OR MODEL
THESE INSTRUCTIONS APPLY IN THE UK
ONLY AND SHOULD BE FOLLOWED EXCEPT
FOR ANY STATUTORY OBLIGATION
IF YOU ARE IN ANY DOUBT CONTACT
WORCESTER BOSCH TECHNICAL
HELPLINE
THIS ACCESSORY MUST BE FITTED BY A
COMPETENT PERSON. FAILURE TO COMPLY
COULD LEAD TO PROSECUTION.
LEAVE THESE INSTRUCTIONS WITH THE
USER OR AT THE APPLIANCE.
ABBREVIATIONS
CH = Central Heating
DHW = Domestic Hot Water
RF = Radio Frequency
DLS = Daylight Saving
BST = British Summer Time
GMT = Greenwich Mean Time
C = Celsius (Centigrade)
IP = Ingress Protection
V = Volt
m = metre
mA = milliAmpere
DEFINITIONS (DLS/BST)
Summer time begins: Last Sunday in March at
1:00 am GMT (Clocks are put forward by 1 hour)
Summer time ends: Last Sunday in October at
2:00 am BST (Clocks are put back by 1 hour)
WORCESTER, BOSCH GROUP:
TECHNICAL 08705 266241
SERVICE 08457 256206
SPARES 01905 752571
LITERATURE 01905 752556
TRAINING 01905 752526
SALES 01905 752640
WEBSITE worcester-bosch.co.uk
SYMBOLS
Central Heating
Domestic Hot Water
Radio Frequency (RF) Transmitter
PROPER BATTERY RECYCLING
Electronic devices and batteries, rechargeable
or not, should not be disposed of into ordinary
household waste. Instead, they must be
recycled properly to protect the environment
and cut down the waste of precious
resources. Your local waste management
authority can supply details concerning the
proper disposal of batteries.
PROTECT YOUR ENVIRONMENT
OPERATING & INSTALLATION
INSTRUCTIONS
DT20RF PROGRAMMER
INSTRUCTION MANUAL
8 716 115 495a (02.2009)
