IDEAL Mexico Slimline CF3/40 User manual

2Mexico Slimline RS & CF 3/40-3/50 - Users
Mexico:
The Floor Standing Gas Boiler
The Ideal Mexico is a range of cast iron floor standing gas central heating boilers. Both
balanced or conventional flue versions are available. A complete range of both natural
gas and propane models. The range offers Super models and, for when space is tight,
there are Slimline models available.
Mexico: Britain’s biggest selling floor standing boiler
The ideal replacement boiler...
Easy to install, easy to operate and easy to service. The Ideal Mexico 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...
27 models, including 4 Slimline models at only 250mm wide and 8 propane Super
models. Option kit availability includes an easy to use programmer kit available on all
models, an overheat thermostat kit for all models and a pump kit that can be housed
within the casing, available for all models except the Super CF 3/140 & CF 3/140P.
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 when used in
conjunction with the optional Overheat Thermostat Kit.
Free Guarantee: 1st Year Ideal Care
The home owner is entitled to 12 months free Ideal Care, which includes both parts
and labour, to restore the boiler to full function. Please encourage the home owner to
complete and return the registration form in their Householder’s pack within 30 days of
installation.
Optional Extra Year Cover with Ideal Care
You may wish to offer your own annual service plan or you may wish to advise the
home owner to complete their application form for the appropriate level of extended
Ideal Care - Silver, Gold or Platinum. Full details are available in the Ideal Care brochure.

3
Mexico Slimline RS & CF 3/40-3/50 - Users
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
Destination Countries: GB, IE
Certified - P.I. No. CF.......................87 AT 15
Certified - P.I. No. RS.......................87 AT 14
Mexico Slimline CF 3/40 ............... 41 348 01
Mexico Slimline CF 3/50 ............... 41 348 02
Mexico Slimline (Natural Gas Models Only)
Mexico Slimline RS 3/40 .............. 41 348 04
Mexico Slimline RS 3/50 .............. 41 348 06

4Mexico Slimline RS & CF 3/40-3/50 - Users
1 BOILER CLEARANCES
Safety
It is essential that the instructions in this booklet are
strictly followed, for safe and economical operation of
the boiler.
Gas Safety (Installation & Use) Regulations 1994,
amendments 1996 or 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.
Important notes
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. Inflammable 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.
TTB downdraught thermostat
(CF boilers only)
This appliance is fitted with a TTB downdraught thermostat for
added safety and protection. If this thermostat should operate
and switch off the appliance it is because the flue is subject to
downdraught, probably as a result of adverse wind conditions.
The TTB is an automatic reset thermostat which will reset once
wind conditions have returned to normal, subject to a built-in reset
delay in excess of 10 minutes.
The TTB is an IMPORTANT SAFETY DEVICE and MUST NOT
be put out of action or interfered with in any way.
The TTB is not a substitute for an independently mounted carbon
monoxide detector.
In cases of repeated or continuous shutdown a CORGI
registered person should be called to investigate and rectify the
condition causing this. 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.
Table 1
Minimum Minimum
Boiler A or BA+B
mm (ins.) mm (ins.)
CF 3/40 25 (1) 100 (4)
CF 3/50 25 (1) 100 (4)
RS 3/40 5(
3/16)10(3/8)
RS 3/50 5(3/16)10(3/8)
Dimensions in mm (in.)
THE LOG BOOK SHOULD BE COMPLETED AFTER
EACH SERVICE AND KEPT WITH THESE
INSTRUCTIONS

5
Mexico Slimline RS & CF 3/40-3/50 - Users
To light the boiler. Refer to Frame 2
If a programmer is fitted refer to separate instructions for the
programmer before continuing.
1. Check that the electricity supply to the boiler is OFF.
2. Remove the lower front panel by pulling it forward and lifting
off.
3. Open the control panel drop-down door and ensure that the
thermostat knob (A) is in the OFF position.
4. Turn the gas control knob (B) to the RIGHT until resistance is
felt and then release it.
Wait for 3 minutes.
5. Push in and retain fully depressed the gas control knob (B).
Press and release the ignition button (C) repeatedly until the
pilot flame can be seen through the sight glass (D). When
the pilot has lit, continue to press in the gas control knob (B)
for a further 15 seconds.
6. Should the pilot go out at this or any other stage, turn the
gas control knob (B) CLOCKWISE and release it. Wait for 3
minutes then repeat instruction 5 - but wait longer than 15
seconds before releasing the gas control knob.
7. Switch ON the electricity supply to the boiler and check that
all external controls, e.g. room thermostat etc., are ON.
8. Turn the boiler thermostat knob (A) to position 6 and the
boiler will light. Set the boiler thermostat to the desired
setting.
9. Refit the lower front panel by locating the bottom edge
behind the top of the grille assembly and pushing the panel
backward to engage in the upper clips.
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 2.
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.
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. Turn the gas control knob (B) CLOCKWISE until
resistance is felt then release it to extinguish the pilot
burner.
c. Switch the electricity supply to OFF.
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 -
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.
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.
3. The pilot burner remains alight continuously to give re-
ignition of the main burner.
To relight the boiler
Repeat the procedure 1 - 9 detailed in 'To light the boiler'.
2 BOILER CONTROLS
RS boiler shown
LEGEND
ABoiler thermostat knob
BGas control knob
CIgnition button
DSightglass
EOverheat thermostat (optional)
reset button

6Mexico Slimline RS & CF 3/40-3/50 - Users
Boiler Overheat Thermostat
(Fitted for sealed systems only)
The boiler is fitted with a safety 'cutout' thermostat. This
thermostat will extinguish the pilot and shut down the boiler in
the event of overheating. Should this occur, allow the boiler to
cool, press the reset button (E) on the overheat thermostat then
relight as detailed in steps 1-9 under 'To light the boiler'.
If the 'cutout' condition persists turn off the boiler and consult a
CORGI registered installer.
Loss of system water pressure
(Boilers fitted with the Overheat Thermostat Kit only)
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
Ideal Consumer Helpline: 01482 498660
CERTIFIED PRODUCT
Manufactured under a BS EN ISO 9001:1994
Quality System accepted by BSI
CARADON PLUMBING Ltd. pursues a policy of continuing
improvement in the design and performance of its products. The
right is therefore reserved to vary specification without notice.
September 1999 151913 A02
CARADON PLUMBING Ltd, P.O. Box 103, National Ave, Kingston upon Hull, HU5 4JN.
Telephone: [phone] Fax: [phone]. Registration No. London 322 137. Registered
Office: National Avenue, Kingston upon Hull, HU5 4JN. A subsidiary of Caradon p.l.c
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.
The code of practice for the installation,
commissioning & servicing of central heating systems
Caradon Plumbing 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.
THIS SYMBOL IS YOUR
ASSURANCE OF QUALITY
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.

7
Mexico Slimline RS & CF 3/40-3/50 - Users
Your feedback
and your chance to win a free boiler
At Ideal we've been leaders in the design and engineering of robust and
reliable boilers for over 90 years. We want to continue as leaders by
listening to your suggestions for how to improve our boilers and our service.
We'll be giving away a free boiler for the five best ideas every year (to be
selected by our Technical Director). Please complete this form, using extra
sheets if required, and post it or fax it to us on 01482 498699.
Boiler details
Model / Size (e.g. Classic RS 230, Mexico CF 3/60 etc. Details on control panel door)
Date of Installation
Installer details
Name
Address
Post Code Telephone (Please include STD code)
How I would improve this boiler: :
My general comments for Ideal:
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Ideal Consumer Helpline: 01482 498660

UIN 151 913 A0
CARADON PLUMBING Ltd, PO Box 103, National Avenue, Kingston upon Hull, HU5 4JN. Telephone: [phone] Fax: [phone].
Further information
If you would like information about Ideal Boilers please complete this
sheet and fax it to us on 01482 498699 or post it to Caradon Plumbing
Limited, PO Box 103, National Avenue, Kingston upon Hull, HU5 4JN.
Installer details
Name
Address
Post Code Telephone (Please include STD code)
General information required
Please send me details of Ideal Training Courses.
Please arrange for a technical representative to contact me.
Please arrange for me to join an Ideal factory tour.
Range guides required
The Ideal Guide: a specifier's and installer's introduction to the
Ideal domestic boiler range.
The Ideal Householders Guide: to assist the installer when
presenting to his/her customers.
Technical manuals required
The Ideal C class combi boiler
The Ideal Classic wall hung boiler
The Ideal Classic System wall hung boiler
The Ideal Classic LX Deluxe wall hung boiler
The Ideal Mexico floor standing boiler
The Ideal Minimiser heat-saving boiler
The Ideal Response combi boiler
The Ideal Response SE super efficiency combi boiler
The Ideal Systemiser SE super efficiency system boiler
The Ideal Concord high output boiler
The Ideal Buccaneer oil fired boiler
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Ideal Consumer Helpline: 01482 498660