26CDi XTRA
USER INSTRUCTIONS &
CUSTOMER CARE GUIDE
8 716 145 160e 10/05
134
Hot Water Mode:
The appliance operates to supply only domestic hot water when the
heating temperature mode is fully anti-clockwise, at the off position or the timer
is programmed to OFF mode.
When a demand is made for hot water by opening a tap or shower, the flow
switch will energise the pump and circulate primary hot water around the boiler and
water to water heat exchanger. The burner will light at its maximum setting.
When hot water is no longer required the appliance pump and fan may
continue to operate to dissipate the residual heat within the boiler.
A flow restrictor is fitted within the appliance which limits a hot water
delivery rate to a maximum of 9.0 (±15%) litres/minute (2.0 gallons/minute).
Hot Water and Central Heating mode:
When a demand is made for
heating by the system controls
(i.e. a programmer or room
thermostat). the pump will
energise circulating primary
water around the heating
system and the burner will
light. The heat output from
the appliance in this mode has
been factory set to maximum.
The appliance will operate as
necessary to maintain the
temperature of the radiators
at the level set by the
adjustment of the Heating
Temperature Control Knob.
(See Fig. 3.)
If the system no longer
requires output to maintain
the desired room temperature,
the burner will extinguish.
The pump will continue to
run for a short period to
dissipate the residual heat
from the appliance and then
switch off.
The pump will run for
the duration of the demand
and only shut off if the room
thermostat or programmer is
satisfied.
The appliance will supply
heat to the central heating
system as required. A demand
for hot water at a tap or
shower will override the
central heating function for
the period of the domestic
hot water demand.
NOTE: If in doubt about
the use of the controls ask
your installer to assist you.
G. C. NUMBERS.
NATURAL GAS. L. P. G.
47 311 41 47 311 42
IMPORTANT: THIS APPLIANCE IS FOR USE WITH NATURAL GAS OR LPG.
THESE INSTRUCTIONS APPLY IN THE UK ONLY.
THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER OR AT THE GAS METER
GUARANTEE
REGISTRATION
You should complete and return the postpaid Guarantee
Registration Card within 30 days of purchase.
The card will register you as the owner of your new
Worcester 26CDi Xtra appliance and, while this will not affect
your statutory rights in any way, it will assist us to maintain an
effective and efficient customer service by establishing a
reference and permanent record for your boiler.
IMPORTANT: SERIAL NUMBER. Copy the number off the
Guarantee Card.
FOR YOUR OWN RECORD
MODEL
SERIAL NUMBER
(See identity label inside appliance casing)
TYPE/SIZE DATE OF INSTALLATION
MAINTAINING YOUR
APPLIANCE
Your new Worcester 26CDi Xtra gas-fired appliance
represents a long-term investment in a reliable, high quality
product.
In order to realise its maximum working life, and to ensure
it continues to operate at peak efficiency and performance, it is
essential that your boiler receives regular, competent servicing
and annual maintenance checks beyond the initial 12 month
guarantee period.
Regular service contracts can be arranged with your installer
– however if you have difficulty making a satisfactory
arrangement simply contact Worcester on 01905 75624 for help.
Fig. 1. Appliance Water Flow Diagram.
Secondary Heat
Exchanger
Automatic
Air Vent
Circulating
Pump
Water To Water
Heat Exchanger
Water Diverter
Valve
Pressure Relief
Valve
Condensate
Drain
Safety
Relief
CH
Return
CH
Flow
Domestic Cold
Water Supply
Domestic Hot
Water Out
Gas To Water
Heat Exchanger
Boiler
Expansion
Vessel
26CDi XTRA
CORGI CONTACT
All CORGI Registered installers carry a CORGI ID card and
have a registration number. Both should be recorded in your
central heating log book. You can check your installer is
CORGI Registered by calling CORGI on 01256 372300
Worcester, Bosch Group, Cotswold Way, Warndon, Worcester WR4 9SW.
Telephone: 01905 754624 Fax: 01905 753130.
Technical Helpline 08705 266241.
Worcester, Bosch Group is a trading name of BBT Thermotechnology UK Limited
www.worcester-bosch.co.uk
Worcester supports the
Benchmark code of practice
Vote for your
‘Installer of the year’ at
www.worcester-bosch.co.uk
(42 páginas)
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