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USERS
GUIDE
British/Scottish
Gas RD2
the floor standing boiler
440 - 4125 RD2
Floor standing, gas
fired fanned flue boiler
Householders guide to domestic central heating boilers
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British Gas:
(Any internal reference to British Gas applies equally to Scottish Gas)
The British Gas RD2 is a range of cast iron floor standing gas central heating boilers.
A complete range of natural gas models is available.
The ideal replacement boiler...
Easy to install, easy to operate and easy to service. The British Gas RD2 really is the
ultimate replacement floor standing range - you can depend on it.
Proven reliability...
Proven cast iron heat exchanger engineered and refined to be the most dependable
floor standing boiler ensuring totally calm operation and quiet running, whatever the
system demands.
Complete range...
There are 7 models in the range. All models include an overheat thermostat and a Flue
Directional kit for side and top outlet installations.
Full system suitability...
All 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. 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 days a year
helpline. Full details of the terms and conditions for Three Star Cover schemes are
available separately on request.
British Gas RD2
440 RD2 ....G.C. No. 41 392 33
450 RD2 ....G.C. No. 41 392 34
460 RD2 ....G.C. No. 41 392 35
470 RD2 ....G.C. No. 41 392 36
480 RD2 ....G.C. No. 41 392 37
4100 RD2 ....G.C. No. 41 392 72
4125 RD2 ....G.C. No. 41 392 73
(Natural Gas Models Only)
Introduction
It is essential that the instructions in this booklet are
strictly followed, for safe and economical operation of
the boiler.
Current Gas Safety (Installation &
Use) Regulations or rules in force.
In your own interest, and that of safety, it is the law that this
boiler must be installed by a CORGI 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.
Certified - P.I. No. 87 BL 30
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 01256 372 300.
Destination Countries: GB
THE LOG BOOK SHOULD BE COMPLETED AFTER
EACH SERVICE AND KEPT WITH THESE
INSTRUCTIONS.
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British Gas RD2 - Users
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Remote appliance diagnostic 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. If the boiler is installed in a compartment then the compartment
MUST NOT be used for storage purposes.
b. 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.
c. 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.
d. 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.
e. 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.
Minimum clearances
A clearance of 533mm (21") MUST be available at the front of the
boiler for servicing.
The minimum clearances given in Table 1 MUST be complied with,
in order to maintain the safe running of the boiler.
To light the boiler.
1. Check that the electricity supply to the boiler is OFF.
2. Open the control panel drop-down door and ensure that the
thermostat knob (A) is in the OFF position.
Refer to Frame B
3. Switch ON the electricity supply to the boiler and check that
all external controls, e.g. programmer, room thermostat etc.,
are ON.
4. Set the boiler thermostat knob (A) to position 6. After about
25 seconds the boiler will light automatically and the 'Burner
On' neon (B) will illuminate. Set the boiler thermostat to the
desired position.
5. Close the control panel door.
Note. If the boiler fails to light after 5 attempts consult a CORGI
registered installer.
Winter conditions (i.e. central heating and domestic hot water).
The thermostat should be positioned at setting 5 or 6.
Summer conditions (i.e. domestic hot water only). The
thermostat should be positioned at setting 3.
These settings 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.
Control of water temperature
1. Set the boiler thermostat knob (A) 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
Turn the boiler thermostat knob (A) to OFF. When heating is
again required, restore the knob to its original setting.
2. For longer periods
a. Turn the boiler thermostat knob (A) to OFF.
b. Switch the electricity supply to OFF.
To relight the boiler
Repeat the procedure 1 - 5 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 (if fitted) at a
reduced temperature setting.
For longer periods, the entire system should be drained -
A
BOILER CLEARANCES
CAUTION.
To avoid the possibility of injury during the installation, servicing or cleaning
Table 1
Boiler Flue Dimension A
Model Length Rear Flue Side/Top flue
mm (in.) mm (in.) mm (in.)
440 , 450 Up 10 35
460 , 470 to (3/8) (1 3/8)
480 , 4100 600
4125 (23 5/8) 55 (2 1/4) 55 (2 1/4)
440 , 450 600 to
460 , 470 3000 35 35
480 (23 5/8 to (1 3/8) (1 3/8)
118)
4100 600 to 2000 35 35
(23 5/8 to (1 3/8) (1 3/8)
78 3/4)
4125 600 to
1000 55 55
(23 5/8 to (2 1/4) (2 1/4)
39 1/4)
of this appliance care should be taken when handling edges of sheet steel components
British Gas RD2 - Users
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B
BOILER CONTROLS
LEGEND
A. Boiler thermostat knob.
B. Main burner 'On' neon.
C. Control panel door.
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 (if fitted) 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 thermostat
will shut down the boiler in the event of overheating. Should this
occur turn off the boiler and consult a CORGI registered installer .
Loss of system water pressure
(Boilers fitted with sealed system unit)
If the red arrow on the system 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 FIRE THE BOILER IF THE PRESSURE HAS
REDUCED TO ZERO FROM THE ORIGINAL SETTING
Escape of gas
Should a gas leak or fault be suspected, contact your 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 .
Note. The appliance model is given on the data plate, located on
the front of the boiler base plate, behind the grille assembly.
This boiler is exclusively manufactured for British Gas by Ideal Boilers
THIS SYMBOL IS YOUR
ASSURANCE OF QUALITY
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.
British Gas Services Limited. Registered in England, No. 3141243. Registered Office:
Millstream, Maidenhead Road, Windsor, Berkshire SL4 5GD. British Gas Services Ltd.
has made every effort to 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.
These appliances are designed for use with Natural
Gas only. They have been tested and conform with
the provisions of BS. 6332 and BS. 5258.
CERTIFIED PRODUCT
Manufactured under a BS EN ISO
9001:1994 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.
August 2001 UIN 157 657 A01
If you would like this leaflet in an
alternative format such as large print,
Braille or audio cassette please call
us on 0845 7 754 754
Priority Helpline 08459 500 400
If you have impaired hearing
and use a text phone please
call us on 0845 6 040 345
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