Ideal Boilers mini HE C24 Installation And Servicing

INSTALLATIONmini HE --- Installation & Servicing2828 ANTI CYCLING SETTINGIf the dipswitch number 4 on the main P.C.B. is set to the ’ON’position it will activate the re---ignition delay period ofapproximately 3 minutes. When dipswitch number 4 is set tothe ’OFF’ position there will be approximately 30 secondsre---ignition delay period.ONOFF1 2 3 4ONOFF1 2 343 minutes 30 sec.29 COMMISSIONING AND TESTINGThe benchmark Logbook or equivalent self certificationshould be completed and signed to demonstrate compliancewith Building Regulations.A. Electrical InstallationChecks to ensure electrical safety should be carried outby a competent person.ALWAYS carry out the preliminary electrical system checks,i.e. earth continuity, polarity, resistance to earth and shortcircuit, using a suitable test meter.B. Gas Installation1 The whole of the gas installation, including the meter,should be inspected and tested for soundness andpurged in accordance with the recommendations of BS.6891. In IE refer to I.S. 813:2002.2 Purge air from the gas installation by loosening the gascock union and purge until gas odour is detected.3 Retighten the union and test for gas soundness.WARNING. Whilst effecting the required gas soundnesstest and purging air from the gas installation, open allwindows and doors, extinguish naked lights and DO NOTSMOKE.30 GENERAL CHECKSMake the following checks for correct operation:1 Hot water.a. Fully open all DHW taps in turn and ensure that water flowsfreely from them.b. Close all taps except the furthest one from the boiler andcheck that the boiler is firing at maximum rate.c. Ensure that DHW temperature of approximately 35 ° C riseis obtained at the tap. This corresponds to a flow rate of aboutlitres/min (gpm) models10.1 (2.2) mini HE C2411.7 (2.6) mini HE C28d. Turn off the DHW tap.2 Central heating (all models)Operate each control separately and check that the mainburner or circulating pump, as the case may be, responds.3 Gas rate --- G20Check the boiler gas rate when the boiler is at full output.The gas rate checked at the gas meter, with no otherappliance in use will normally be:litres/min (ft3/min) models44.2 (1.56) mini HE C2451.2 (1.81) mini HE C28If this check is not possible, ensure that the burner pressureis:10.8 (4.3) mbar (in. w.g.) for the model mini HE C24 and10.0 (4.0) mbar (in. w.g.) for the model mini HE C28.mbar (in. w.g.) models10.8 (4.3) mini HE C2410.0 (4.0) mini HE C284 Water circulation systemNote. Fernox Superfloc flushing solution should be usedduring the flushing procedure.a. With the system HOT examine all water connections forsoundness.b. With the system still HOT, turn off the gas, water andelectricity supplies to the boiler and drain down, to completethe flushing process.c. Refill the system, adding inhibitor (see ’Water Treatment’), ifrequired.Vent as necessary to clear all air and, again, check for watersoundness. After venting, repressurise as required.d. Balance the system. It is suggested that, initially, all radiatorhandwheel valves (or TRVs if fitted) be set fully open, that alllockshield valves be set a half ---turn open.Make minor adjustments to each radiator to achieve the samedifferential on all.5 Flue systemCheck the integrity of the flue outlet and air inlet system to theboiler ensuring no leaks are evident from piping joints orflue/air sampling points.Finally, set the system controls to the users requirements.If an optional programmer kit is fitted refer to the instructionssupplied.INSTALLATION