Ideal Boilers mini HE C24 Installation And Servicing

SERVICINGmini HE --- Installation & Servicing 4159 DHW FLOW SWITCH REPLACEMENT1 Disconnect the electrical supply.2 Remove the front panel of the case (refer to frame 34).3 Disconnect the connector A and remove the sensor bypulling it towards the front of the boiler (the sensor is heldin place by means of a spring).4 Replace the sensor and re---assemble in reverse orderA60 DHW FILTER AND FLOW LIMITERREPLACEMENT1 Disconnect the electrical supply.2 Remove the front panel of the case and empty the DHWcircuit.3 Remove the flow switch A (see frame 59).4 Remove the gas valve (see frame 48).5 Unscrew the plug B and extract the flow switch group.6 To remove the filter C from the flow switch group separatethe body D from the plug B by unscrewing it.7 Re---assemble in reverse order.A --- flow switchB --- plugC --- filterD --- bodyMagnetic ringFloatSpringSpring seatFlow limiterThreaded ringThreaded ringReturn manifoldAttention: the magnetic ring has a magnetic polarity andmust be correctly coupled with the spindle of the float.To determine the correct orientation of the ring proceed asfollows:1 Set the function selector of the boiler in stand ---by mode.2 Restore the mains electricity supply to the boiler.Warning --- ensure that all the electric parts and wiringare dry and do not touch other electric parts duringthe following operations.3 Hold the flow switch sensor and bring the ring in contactwith the sensor as illustrated in the followingdrawing.4 Observe if the lamp fitted in the sensor body is lit. If notreverse the ring and repeat the previous operation.5 Fit the ring on the spindle of the float in the way that lightsthe lamp. Ensure filter is correctly positioned and that plug“B” and the threaded ring are screwed tight into the body“D”.6 Isolate the boiler from the mains electricity supply andreassemble the parts following the removing sequence inreverse order.Flow limiterThe mini HE C24 model is factory fitted with a 10 litre/min.flow limiter.The mini HE C28 model is factory fitted with a 12 litre/min.flow limiter.Table 8Nominal flow rate (litres/min) Colour10 Yellow12 Brown1 Disconnect the electrical supply.2 Remove the front panel of the case and empty the DHWcircuit.3 Remove the flow switch A (see frame 59).4 Remove the gas valve (see frame 48).5 Remove the flow switch group (see frame 60 above)6 Unscrew the threaded ring and extract the flow limiter.7 Fit the correct colour coded limiter (see Table 8 above)and screw the threaded ring tight into the body ’D’.8 Re---assemble in reverse order.SERVICING