IDEAL INDUSTRIES MINI HE C28 User Manual

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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