Benchmark RD109 User manual

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USERS
GUIDE
Householders guide to domestic central heating boilers
See reverse for RD1
Installation & Servicing Instructions
British/Scottish
Gas RD1
the wall hung boiler
Wall hung, gas fired
fanned flue boiler
RD109, RD112,
RD115, RD118,
RD121, RD124, RD130

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2
British Gas RD1 - Users
BritishGasRD1( Natural Gas Models Only)
Introduction
It is essential that the instructions in this booklet are
strictly followed, for safe and economic operation of
theboiler.
Current Gas Safety (Installation & Use)
Regulations or the rules in force.
In your own interest, and that of safety, it is the law that this
boiler must be installed by a registered installer, in accordance
with all national and local regulations.
Electricity Supply
This appliance must be efficiently earthed.
Supply: 230 V ~ 50 Hz. The fusing should be 3A.
Connection must be made in a way that allows complete
isolation of the electrical supply such as a double pole
switch having a 3mm (1/8") contact separation in both
poles, or a plug and socket, serving only the boiler and
system controls. The means of isolation must be
accessible to the user after installation.
RD109 G.C. No. 41 397 56/75
RD112 G.C. No. 41 397 57/76
RD115 G.C. No. 41 397 58/77
RD118 G.C. No. 41 397 59/78
RD121 G.C. No. 41 397 60/79
RD124 G.C. No. 41 397 61/80
RD130 G.C. No. 41 397 62/81
British Gas:
(Any internal reference to British Gas applies equally to Scottish Gas)
The British Gas RD1 is a range of cast iron wall mounted fanned flue gas central heating boilers. A complete
rangeofnaturalgasmodelsisavailable.
The ideal replacement boiler...
Easytoinstall,easytooperateandeasy to service. TheBritishGas RD1 really istheultimatereplacement wall
mounted range - you can depend on it.
Proven reliability...
Provencastironheatexchangerengineeredand refinedto bethe mostdependable wallmountedboilerensuring
totallycalm operation and quiet running, whatever the system demands.
Complete range...
Thereare7 models in the range. Allmodelsincludea Downward Routing Pipe Kit andanoverheatthermostat.
Full system suitability...
Most models are suitable for connection to pumped open vent central heating systems, pumped central
heating combined with pumped or gravity indirect domestic hot water supply systems (note that the 100
model is not suitable for gravity installations).
They can also be used on sealed water systems.
Free Three Star Service Cover:
In addition to the guarantee, we will provide absolutely free a British Gas Services Three Star Service Cover
agreement to cover your complete new system during the first year. The benefits of this cover include priority
attention and a 24 hours a day 365 day a year helpline. Full details of the terms and conditions for Three Star
Coverschemesare available separately on request.
THE LOG BOOK SHOULD BE COMPLETED AFTER
EACH SERVICE AND KEPT WITH THESE
INSTRUCTIONS
All CORGI Registered Installers carry a CORGI ID card, and have a registration number. Both should be recorded
in your Benchmark Log Book. You can check your installer by calling CORGI direct on 0156 372 300.

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British Gas RD1 - Users
3
CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning
of this appliance care should be taken when handling edges of sheet steel components
Minimumclearances
A clearance of 533mm (21") MUST be available at the front of the
boiler for servicing.
The minimum clearances given below MUST be complied with
in order to maintain the safe running of the boiler. Refer to
Table 1.
To light the boiler. Refer to Frame 1
1. CHECK THAT THE ELECTRICITY SUPPLY TO THE BOILER
IS OFF.
2. Open the controls access door by hinging downwards.
3. Ensure that the gas service cock (D) is OPEN.
4. Press the overheat reset button (E), located as shown in
Frame 1.
5. Ensure that the thermostat on/off knob (B) is in the OFF
position.
6. Switch ON the electricity supply to the boiler. Check that all
external controls, e.g.programmer, room thermostat etc.,
are ON.
7. Set the boiler thermostat On/Off knob (B) to position 6. After
about 25 seconds the boiler will light automatically - this
can be viewed through the sight glass (A).
Set the boiler thermostat to the desired position.
8. Close the controls access door.
Note.
If the boiler fails to light after 5 attempts press the reset
switch (C) and the ignition sequence will be repeated. If the
boiler still fails to light consult a CORGI registered installer.
In winter conditions, i.e. central heating and domestic hot
water, the thermostat should be set at position 5 or 6.
For summer conditions, i.e. domestic hot water only, the
thermostat should be set at position 3.
These settings, however, are offered for general guidance only
and other settings may be found preferable, dependent upon
the type of system installed or as recommended by the
installer.
1 BOILER CONTROLS LEGEND
A. Sightglass.
B. Thermostat On/Off knob.
C. Boiler reset switch.
View inside boiler controls area
D. Gas service cock
(shown in the OPEN
position).
E. Overheat thermostat
reset button.
Table 1 Above the boiler 100 mm (4")
At each side of the boiler 5 mm (1/4")
Underneath the boiler 100 mm (4")
In front of the boiler 75 mm (3 ")
Controls
door
CL 1037-4
Remoteappliancediagnostic system
This appliance is capable of automatically communicating
operational data to a central computer processing system via
the house ring main and telephone line, known as 'Remote
Appliance Diagnostic System' (RADS).
The information is transmitted in the early hours of the morning
once every 30 days, or immediately if the boiler develops a
fault.
If an attempt is made to use the telephone during the
transmission, some interference will be heard. In this event
replace the receiver and try again after 30 seconds.
Important points
a. This appliance must not be operated without the casing
correctly fitted and forming an adequate seal.
b. If the boiler is installed in a compartment then the
compartment MUST NOT be used for storage purposes.
c. The ventilation provided for the boiler during installation
MUST NOT be blocked, and a check should be made
periodically that the ventilation areas are free from any
obstruction.
d. If it is known or suspected that a fault exists on the boiler
then it MUST NOT be used until the fault has been corrected
by a CORGI registered installer.
e. Flammable materials must not be placed in close proximity
to the appliance. Materials giving off flammable vapours
must not be stored in the same room as the appliance.
f. Where the boiler is fitted with a Vertex flue system with a
draught diverter in the loft, the loft MUST NOT be ued as a
dwelling area.
g. Under NO circumstances should any of the sealed
components on this appliance be used incorrectly or
tampered with.
In cases of repeated or continuous shutdown a CORGI
registered installer should be called to investigate and rectify
the condition causing this and carry out an operational test after
each intervention on the device. Only the manufacturer's
original parts should be used for replacement.

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The code of practice for the installation,
commissioning & servicing of central heating systems
British Gas Services Limited is a member of the Benchmark initiative and fully supports
the aims of the programme. Benchmark has been introduced to improve the standards of
installation and commissioning of central heating systems in the UK and to encourage the
regular servicing of all central heating systems to ensure safety and efficiency.
CERTIFIED PRODUCT
Manufactured under a BS EN
ISO 9001:2000 Quality System
accepted by BSI.
British Gas pursues a policy of
continuing improvement in the
design and performance of its
products. The right is therefore
reserved to vary specification without
notice.
British Gas Services Limited. RegisteredinEngland,No.3141243. Registered Office:Millstream,
MaidenheadRoad, Windsor,Berkshire SL45GD. British Gas ServicesLtd. hasmadeevery effortto
ensure that the information contained in this leaflet is accurate. However, not all the information is
within the control of British Gas Services Ltd., and it may have changed since publication. British
Gas Services Ltd. does not accept any liability for changes which occur after publication. No
guarantee takes away any rights you may have at law. Calls to this number may be monitored to
maintain a high level of service and for training purposes.
Priority Helpline 08459 500 400
This boiler is exclusively manufactured for British Gas by Ideal Boilers
Control of water temperature
1. Adjustthe boiler thermostat(B) to give the required temperature
for central heating.
2. The boiler thermostat automatically switches the main burner
OFF and ON to maintain the selected temperature.
To shut down the boiler
1. For short periods
Set the boiler On/Off knob (B) to OFF. When heating is
again required, turn the knob to the desired position.
2. For longer periods
Set the boiler On/Off knob (B) to OFF. Switch OFF the
electricity supply.
To relight the boiler
Repeat the procedure 1 - 8, detailed in 'To light the boiler'.
Frost protection
If no frost protection is provided and frost is likely during a short
absence from home, leave the heating controls at a reduced
temperature setting.For longer periods, the entire system should
be drained - including the domestic water supply. If the system
includes a frost thermostat then, during cold weather, the boiler
should be turned OFF at the time switch(es) ONLY. The mains
supply should be left switched ON, with the boiler thermostat left
in the normal running position.
Boiler Overheat Thermostat
The boiler is fitted with a safety 'cutout' thermostat. This will shut
down the boiler in the event of overheating. Should this occur
allow the boiler to cool, press the reset button (E) then relight as
detailed in steps 1-8 in 'To light the boiler'.
If the cutout condition still persists turn off the boiler and consult a
CORGI registered installer.
Lossofsystemwater pressure
Boilers fitted with Sealed System Units only
If the red arrow on the unit pressure gauge is set above zero and
the system pressure is seen to fall below this value over a period
of time then a water leak is indicated. In this event a CORGI
registered installer should be consulted.
DO NOT OPERATE THE BOILER IF THE PRESSURE HAS
REDUCED TO ZERO FROM THE ORIGINAL SETTING.
Escapeofgas
Should a gas leak be suspected, contact your local gas supplier
without delay.
Do NOT search for gas leaks with a naked flame.
Cleaning
For normal cleaning simply dust with a dry cloth.
To remove stubborn marks and stains, wipe with a damp cloth
and finish off with a dry cloth.
Do NOT use abrasive cleaning materials.
Maintenance
The appliance should be serviced at least once a year by a CORGI
registered installer.
Approximate flow temperatures for the boiler thermostat settings are:
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Knob Setting Flow Temperature
°C°F
154 130
260 140
366 150
471 160
577 170
682 180