Grant OFTEC CD10 User manual

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CONTENTS:
SERVICE LOG
ARRANTY DETAILS
COMMISSIONING
HAT THE INSTALLER SHOULD
LEAVE ITH YOU
HAT TO DO NO !
SERVICING
HO TO OPERATE YOUR BOILER
AFTER SALES SERVICE

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*Sealed System only
DATE C02%NET FGT (oC) NOZZLE
EXPANSION
VESSEL CHARGE
CHECKED*
PUMP
PRESSURE
(BAR)
SERVICED BY:
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Thank you for choosing a Grant high ef ficiency oil
fired boiler. This appliance has been designed to
provide you with years of trouble free operation.
However it is important to ensure that regular servicing
is carried out. Please take time to read the following
useful information and retain this booklet to record all
future servicing.
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The boiler is automatically covered against
manufacturing defects for 12 months from the date of
purchase. A further 12 months cover will be applied
upon receipt by Grant UK of the completed guarantee.
To register your boiler visit: >> >09,6;<3-75
The steel heat exchanger is covered for five years
against manufacturing defects. For the warranty to
apply, the boiler must be installed, commissioned and
operated in accordance with the installation
instructions provided.
*Terms and conditions apply. See Boiler Guarantee
Section in ‘Homeowner Zone’ of website. Boiler must
be serviced after first 12 months.
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Following installation, the boiler must be
commissioned by a ‘competent person’, such as an
OFTEC Registered Engineer, to validate the warranty.
The boiler will be set to its optimum ef ficiency using
specialist flue gas analysis equipment. Your Installer
should organise the commissioning. However, if
required, Grant UK can provide details of
Commissioning Engineers in your area.
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A completed OFTEC CD10 installation
completion report.
A completed OFTEC CD11 form or a
commissioning report.
The user, installation and ser icing
instructions.
Also, your Installer should have advised you how to
operate the boiler and, where a sealed system is
fitted, how to check and top up the heating system.
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Visit >>>09,6;<3-75and follow the links to the
‘7<:/174./9+76/A where you can register your
Grant oil-fired boiler for an additional free 12 months
warranty (24 months from date of purchase). You will
find the information that you need (Serial umber,
Model etc.) on the boiler data label on the inside of
the boiler casing. See back page of this handbook.
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Upon completion of your online Guarantee, Grant UK
will register your boiler for two years.
If you take out the extended warranty cover (the
application form is downloadable from the Grant UK
website) the insurer’s agent Bluefin Insurance
Services Ltd (underwritten by orwich Union) will
send you an extended warranty certificate.
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The boiler warranty can be increased to five years.
Simply complete the Extended Warranty application,
downloadable from the Grant website and return it to
Bluefin, enclosing a cheque for the required amount.
Af ter the five year period the boiler warranty can be
extended on an annual basis. For details please
contact Grant UK.
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The boiler should be serviced at least every
12 months. This is also a condition of the second
year manufacturer’s warranty.
The nozzle and braided oil hose should be replaced
annually and on sealed systems, the expansion
vessel air charge must be checked. Details for this
are given on the front of the expansion vessel.
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Full operating instructions may be found in the
Installation and Servicing Manual supplied with the
boiler. Ensure that your Installer has lef t the
Instruction Manual for your attention and has
demonstrated how to operate the controls.
The following pages explain how to operate your
boiler and, where a sealed system has been
installed, how to check and top-up the heating
system.
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Turns the boiler on or of f as required. Some boilers
are fitted with a ‘Boiler On’ indicator light – check in
the User Instructions section of the Installation and
Servicing Manual supplied with your boiler.
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Controls the temperature of the water leaving the
boiler.
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Automatically cuts the burner out if the boiler
overheats. Can be manually reset once the boiler
has cooled down. Unscrew the plastic cap and press
the reset button (see below). If the boiler overheats
regularly there may be a fault and you should
contact your Installer.
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Ensure that the pointer on the gauge is reading
between 0.5 and 1.0 bar when the system is cold.
The red indicator can be set to mark this position.
The pressure will rise when the system heats up.
Excessive pressure on the gauge may
indicate that the expansion vessel
requires recharging with air. Contact
your Installer or Service Engineer who
will check the air charge in the
expansion vessel.
Your Service Engineer must check the
air charge on every service – as
detailed in the information given on the
front of the expansion vessel – and record the
pressure on the service log at the front of this
handbook.
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Your Installer should show you how to top up the
system using the filling loop, either located in the
boiler or on the system pipework. Topping up will be
necessary for example when a radiator has been
removed for decorating or air is bled from a radiator.
Frequent topping up may indicate that there is a leak
on the heating system or one of its components.
Contact your Installer or Service Engineer to rectify
the problem. Frequent topping up without tracing or
rectifying the cause may result in internal damage to
the boiler and its components, which would not be
covered under the manufacturer’s warranty.
Filling Loop
fitted in boiler.

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The expansion vessel (red vessel usually attached to
boiler) must be checked annually to ensure that
there is a 1.0 bar air charge in the vessel. Failure to
do this will invalidate the boiler warranty. Refer to the
procedure given on the front of the vessel.
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●Check boiler and circulating pump are switched
of f.
●Check any automatic air vents on the system are
open.
●Connect flexible filling loop* between the two
filling valves.
●Open filling valve on mains water end of filling
loop (valve is open when operating lever is in line
with valve).
●Open filling valve on heating system end of filling
loop to allow water to flow into system (valve is
open when operating lever is in line with valve).
●When pressure gauge shows required system
pressure (see ‘Pressure Gauge’ section – page 5)
close filling valve on heating system.
●Vent each radiator to remove any air – starting
with the lowest one on the system, ie downstairs.
*If you cannot locate the filling loop, please contact your installer.

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
●Locate the circulating pump(s). If you have a
System model the pump will be inside the
boiler casing. Depending on the type, a Combi
may have one or two pumps inside the boiler.
●For other models the pump will be located on the
heating system pipework.
●Vent the pump(s) – unscrew the plug from the
centre of the pump and remove. Using a suitable
screwdriver rotate the shaf t of the pump about
one turn. When water starts to trickle out, replace
the plug.
●Check the system pressure on the gauge. If
necessary, re-open the filling valve on the system
until the gauge shows the required pressure. Take
care not to overfill!
●Close both filling valves and disconnect the filling
loop at one end only. Take care as the filling loop
may contain water!
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If the burner fails to operate, check to see if the reset
button (Lock-out button on the burner) is
illuminated. Internal Wall Hung models have a lock-
out lamp on the control panel. If illuminated press
the rest button on the burner control box. The reset
button should not be pressed more than twice,
should a burner lock-out occur. If the burner cannot
be reset, first check that you have oil in the tank and
also that your fire valve has not tripped. Please refer
to Page 9. If the problem still exists then contact your
installer or Service Engineer for assistance.
Pressing reset button
on Wall Hung boiler

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Modern oil-fired boilers – particularly condensing
boilers – operate at extremely high ef ficiencies with
lower flue gas temperatures. This results in a plume
of water vapour being visible at the flue terminal
when the burner is operating. This pluming is
condensation – rather like your breath on a cold day.
This is a perfectly normal condition with high
ef ficiency and condensing boilers. It indicates that
the boiler is working ef ficiently.
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If your boiler breaks down during the 24-month
warranty period, in the first instance you should
contact your installer to identify the cause of the
problem and if necessary your Installer will contact
us. If you are unable to contact your Installer please
telephone the Grant UK Service Department for
assistance. Authorisation to carry out warranty
repairs must be obtained from Grant UK before any
work is carried out. Costs incurred by unauthorised
work will not be covered by Grant UK.
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●Check On/Of f switch on boiler is set to “On”
(see page 4).
●Check that heating controls (your room
thermostat, programmer, etc) are actually “set”
for the boiler to operate.
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●Check power supply to boiler and controls is on
(usually supplied from a fused isolator) and fuse
fitted is ok. ote: A 5 amp fuse should be fitted.
●Check if Overheat Thermostat has operated –
reset as necessary (See page 4).
●Check that you have fuel in the tank. Some sight
gauges have a button that must be pulled out, or
pressed in, to obtain an up to date reading.
●Check that the remote acting fire valve has not
tripped.
●Locate the fire valve (it should be in the oil line,
just before it enters the building) and reset
it, following the operating instructions supplied
with the valve. Most types commonly in use have
a reset button which must be pressed in to allow
fuel through.
●If you run out of fuel, the oil line will require
purging of air before the burner will fire. Contact
your Installer or Service Engineer to do this for
you.
●Sealed systems – check that the system pressure
is correct (See Page 7). If necessary, top up the
system (See Page 8).


IF yOU EED tO CO taCt
GRa t UK, PLEaSE
haVE thE FOLLOWI G
I FORmatIO aVaILaBLE:
●Boiler model
●Boiler serial number - see data label
(on inside lef t hand side panel, or on
outer casing on blue Boiler House
models)
●Date of purchase
●The correct name and address for
the installation
●Details of the fault and what you have checked
●The installers name, address and telephone number
For your future reference please make a note
of the following:
GBh 02/11UK
GRa t E GI EERI G (UK) LtD
hOPtO hOUSE, hOPtO I DUStRIaL EStatE
DEVIZES, WILtShIRE S 10 2EU
t: 01380 736920 F: 01380 736991
E: SaLES@GRa tUK.COm W: WWW.GRa tUK.COm
GRa t UK SERVICE hOtLI E:
01380 736920
The contents of this handbook are fully protected by
copyright and nothing may be reproduced without direct
permission from Grant UK.
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Boiler Model:
Serial umber:
Date of Purchase: