7
GENERAL
Mexico Super FF4100 & FF4125 -
Installation & Servicing
Caradon Ideal Limited
recommend Water Treatment in
accordance with the
Benchmark
Guidance Notes on Water
Treatment in Central Heating Systems.
Caradon Ideal Limited
recommend the use of Fernox, GE Betz
Sentinel or Salamander water treatment products, which must
be used on accordance with the manufacturers instructions.
For further information contact:
Fernox Manufacturing Co. Ltd, Cookson Electronics, Forsyth Road,
Sheerwater, Woking, Surrey. GU21 5RZ. Tel. +44 (0) 1799 521133
or
G E Betz Ltd, Sentinel Division, Foundry Lane, Widnes, Cheshire,
WA8 8UD. Tel. +44 (0) 151 424 5351
or
Salamander Engineering Ltd, Unit 24, Reddicap Trading Estate,
Sutton Coldfield, West Midlands B75 7BU. Tel. +44 (0) 121 378 0952
Notes.
1.
It is most important that the correct concentration of the
water treatment products is maintained in accordance with
the manufacturers' instructions.
2.
If the boiler is installed in an existing system any unsuitable
additives MUST be removed by thorough cleansing.
BS7593:1992 details the steps necessary to clean a
domestic heating system.
3.
In hard water areas, treatment to prevent limescale may be
necessary - however the use of artificially softened water is
NOT permitted.
4.
Under no circumstances should the boiler be fired before
the system has been thoroughly flushed.
BOILER CONTROL INTERLOCKS
Caradon Ideal Limited
recommend that heating systems utilising
full thermostatic radiator valve control of temperature in individual
rooms should also be fitted with a room thermostat controlling
the temperature in a space served by radiators not fitted with
such a valve as stated in BS. 5449.
Central heating systems controls should be installed to ensure the
boiler is switched off when there is no demand for heating or hot water.
When thermostatic radiator valves are used, the space heating
temperature control over a living / dining area or hallway having a
heating requirement of at least 10% of the boiler heat output
should be achieved using a room thermostat, whilst other rooms
are individually controlled by thermostatic radiator valves.
However, if the system employs thermostatic radiator valves on
all radiators, or two port valves without end switches, then a
bypass circuit must be fitted with an automatic bypass valve to
ensure a flow of water should all valves be in the closed position.
ELECTRICAL SUPPLY
WARNING.
The appliance MUST be efficiently earthed.
Wiring external to the appliance MUST be in accordance with
the current I.E.E. (BS 7671) Wiring Regulations and any local
regulations which apply. For Ireland reference should be made
to the current ETCI rules for electrical installations.
The boiler is supplied for 230 V ~ 50 Hz single phase. The
fuse rating is 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.
For bathroom installations the point of connection to the mains
must be situated outside the bathroom.
4100 FF & 4125 FF
4100 FF
4125 FF
MEX 1877
WATER CIRCULATION SYSTEM
The boiler must NOT be used for direct hot water supply or for
sealed systems. The boiler is suitable for connection to
pumped open vent central heating systems, pumped central
heating combined with pumped or gravity indirect domestic hot
water supply systems.
The boiler is NOT suitable for gravity heating systems. The
hydraulic resistances of the boilers at
maximum output
with
11
o
C (20
o
F) temperature differentials are shown in the graph
below.
The central heating system should be in accordance with
BS. 6798 and, in addition, for smallbore and microbore
systems, BS. 5449:1.
The domestic hot water system, if applicable, should be in
accordance with the relevant recommendations of BS. 5546.
Copper tubing to BS. 2871:1 is recommended for water
carrying pipework.
The hot water storage cylinder MUST be of the indirect type and
should preferably be manufactured of copper.
Single feed, indirect cylinders are not recommended and MUST
NOT be used on sealed systems.
The hot water cylinder and ancillary pipework not forming part
of the useful heating surface should be lagged to prevent heat
loss and any possible freezing - particularly where pipes run
through roof spaces and ventilated underfloor spaces.
IMPORTANT.
A minimum length of 2 m of copper pipe MUST be fitted to both
flow and return connections from the boiler before connection
to any plastic piping.
The boiler must be vented. If venting cannot be done via a flow
connection a separate vent MUST be fitted by the installer.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least
1/2" BSP
nominal size and be in accordance with BS. 2879.
If required, a drain tap (not supplied) may be fitted to an unused
bottom (1" BSP) tapping on the front of the boiler.
WATER TREATMENT
These boilers incorporate a cast iron heat exchanger.
IMPORTANT.
The application of any other treatment to this
product may render the guarantee of
Caradon Ideal Limited
INVALID.
Dotted lines indicate flow rates equivalent to a
temperature rise of 11
o
C (20
o
F)
Water Flow Rate and Pressure Loss
200940-1.p65
3/2/2004, 9:06 AM
7
