users guide
mini HE
Your Ideal users guide
C24,C28
For installation and servicing guide see
reverse of book
When replacing any part of this appliance, use only spare parts that you can be
assured conform to safety and performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly authorised by Ideal Boilers
Normally operating boiler
CH operation
B
DHW operation
In these cases, however, it is advisable to install a small water
treatment device. With such a device you should avoid
periodic descaling.
Frost protect operation
Consequently, the DHW heat exchanger will keep its
performance consistent for a longer period of time with
resulting gas savings.
Lamp
OFF
Flashing lamp, alone
or simultaneously
with an other lamp.
Flashing lamp,
alternate with
another lamp.
TO SHUT DOWN THE BOILER
If the lights sequence observed on the boiler is not included
above then a fault is indicated.
reference should be made to the Installation Instructions or
consult a CORGI registered installer.
For short periods
To turn the boiler off set the function selector C to the O
position. The appliance operation light A will flash every 4
seconds.
CONTROL OF CH TEMPERATURE
For long periods
When you do not expect to use the boiler for a long period:
The output temperature of CH water is adjustable from a
minimum of about 38°C to a maximum of about 85°C by
turning the knob C.
1
2
Switch the electricity supply off.
Shut off the gas supply cock and the valves for the water
circuits fitted under the boiler.
Approx CH flow temperatures for the boiler thermostat
settings:
3
If necessary, empty the water circuits.
FROST PROTECTION
Minimum (38 ûC)
Maximum (85 ûC)
C
This appliance is provided with a built in anti---freeze system
that operates the boiler when the temperature is below 5 ûC
Therefore, when the boiler is not lit and used in cold weather,
with consequent risk of freezing do not isolate the boiler
from the electricity supply or close the gas inlet cock.
ESCAPE OF GAS
Should a gas leak or fault be suspected contact your local
gas supplier without delay.
CONTROL OF DHW TEMPERATURE
The temperature of the DHW leaving the boiler can be varied
from a minimum of about 35°C to a maximum of about 55°C
(within the power limits of the appliance) by turning the
temperature control knob B.
Do not search for gas leaks with a naked flame.
CLEANING
For normal cleaning simply dust with a dry cloth.
Minimum (35 ûC)
Maximum (55 ûC)
To remove stubborn marks and stains use a damp cloth and
mild detergent.
B
Do not use abrasive cleaning materials.
MAINTENANCE
The appliance should be serviced at least once a year by a
CORGI registered installer.
FAULTS
No heating or hot water
Adjustment of the DHW temperature is completely separate
from that of the CH circuit.
The adjustment system integrated within the boiler
automatically controls the flow of gas to the burner in order to
keep the temperature of DHW delivered constant, between
the limits of maximum and minimum output.
Check that gas and electricity are available at the boiler and
that all switches are on.
Check that the system water pressure gauge G reads at least
0,5 bar.
Where the demand is at a low level or with the temperature
set to the minimum, it is normal to see a cycle of lighting and
extinguishing of the burner when running.
Check the lock---out signal lamp E. If it is illuminated press the
boiler reset button D to restart the ignition sequence.
Hot water but no heating
Adjustment
Check that the programmer and room thermostat (if fitted) are
both calling for heat.
It is advisable to adjust the DHW temperature to a level
commensurate with the demand, minimising the need to mix
with cold water. In this way, the automatic control facilities will
be fully exploited.
Heating but no hot water
Check that cold water flows out of the taps at a minimum rate
of 3.5 litres per minute (or 1 pint in 10 seconds or less). If not,
look for stop valves not fully open.
Moreover, where the amount of limescale present in the water
may be particularly great, not exceeding the position as
shown in the following illustration (about 50 ûC) minimises
annoying incidences of scale deposits and clogging.
If these simple checks fail to solve the problem, or the
problem recurs, consult your service engineer.
Points for Boiler User
Note. In line with our current warranty policy we would ask that you check through the following guide to identify any problems
external to the boiler prior to requesting a service engineers visit. Should the problem be found to be other than with the appliance
we reserve the right to levy a charge for the visit, or for any pre---arranged visit where access is not gained by the engineer.
Troubleshooting --- Typical Non Product Faults
Problem
Solution
F Is there power to the boiler i.e. is the left hand side green LED (A) alight and
flashing every 4 seconds. If not this is not a boiler fault --- contact the installer
F Check pressure gauge on boiler shows a minimum of 1 bar.
If not re---pressurise via the filling loop to 1 bar (if unsure contact your installer), turn
off the tap on the filling loop and press the reset button (D) to reset the boiler. If
unable to do so or if the pressure continues to drop after filling then contact your
installer
Boiler is not working for central heating
or hot water
F Is the lockout signal lamp (E) alight --- Press boiler reset button (D) --- If boiler still
does not fire contact the installer
Boiler goes through ignition sequence but
will not fire for either central heating or hot
water and then goes to ignition lockout
F Check gas supply (try another gas appliance cooker/fire etc) If no gas supply
then this is not a boiler fault --- Contact the gas supplier
Fan & pump run continuosly but there isno F Check that the air pressure switch test caps, on top of the boiler, are fitted
attempt at ignition
correctly.
F Check that integral programmer is set to an “on” period and the function switch
is set to “auto”--- If it still does not operate contact your installer
F If fitted with an external programmer check that the central heating channel is set
at an “on” period --- If it still does not operate contact your installer
F Check the room thermostat is set at the required temperature --- Test the room
thermostat by turning fully up --- If this does not respond contact your installer
F Check the radiator temperature control (C) is set at the winter setting for central
heating
Operating for hot water but will notoperate
for central heating
The nature of all combination boilers is to heat up water directly from the incoming mains water supply directly through the boiler to
supply domestic hot water at the stated flow rates, (as shown in the boiler installation instructions), to achieve a 35ûC temperature rise.
As the ambient temperature of the cold main varies during the summer and winter months it is likely in the colder winter months that
the flow rate will need to be reduced at the outlet taps to achieve the same temperatures achieved in the warmer summer months.
This is not a fault with the appliance but is relevant to the varying temperature of the incoming cold mains water supply.
Caradon Ideal limited pursues a policy of continuing improvement in the design and
Ideal Consumer Helpline:
performance of its products. The right is therefore reserved to vary specification without
notice.
01482 498660
Ideal Boilers, P.O. Box 103, National Ave, Kingston Upon Hull, HU5 4JN.
Tel. 01482 492251 Fax. 01482 448858. Registration No. London 322 137.
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