Ideal Boilers isar HE24 User Manual

Also see for HE24: User guide Installation and servicing Installation and servicing User guide Installation and servicing instructions

Contents

3isar - UserísLegendA. Boiler ON/OFF switch.C. Display.D. Reset button.E. LED.CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning ofthis appliance care should be taken when handling edges of sheet steel components.1 BOILER CONTROLSSummer conditions - i.e. DHW only required.Set the CH external controls to OFF, or turn the CH thermostatknob (F) to minimum.The boiler will fire periodically for a few seconds to maintain theDHW calorifier in a preheated condition. The average timeperiod between firing is 90 minutes. This may vary considerablydue to the surrounding ambient temperature of the boiler. Theboiler will fire whenever there is a demand for DHW.Note. The pump will operate briefly as a self-check once every24 hours, regardless of system demand.Control of water temperatureDomestic Hot WaterThe DHW temperature is limited by the boiler controls to 65 oCmaximum at low draw-off rate, adjustable via the DHWthermostat knob (J).Due to system variations and seasonal temperature fluctuationsDHW flow rates/temperature rise will vary, requiring adjustmentat the draw off tap : the lower the rate the higher the temperature,and vice versa.Central HeatingThe boiler controls the central heating radiator temperature to amaximum of 82 oC, adjustable via the CH thermostat knob (F).To shut down the boiler1. For short periodsSet the mains ON/OFF switch (A) to OFF2. For longer periodsSet the mains ON/OFF switch (A) to OFF, and switch theelectricity supply to OFF. For longer periods the entire systemshould be drained.To relight the boilerRepeat the procedure detailed in 'To light the boiler'.Frost protectionIf no frost protection is provided and frost is likely during a shortabsence from home, leave the heating controls (if fitted) at areduced temperature setting. For longer periods, the entiresystem should be drained.If the system includes a frost thermostat then, during coldweather, the boiler should be turned OFF at the time switch (iffitted) ONLY. The mains supply should be left switched ON, withthe boiler thermostat left in the normal running position.Boiler overheat thermostatThis thermostat will shut down the boiler in the event ofoverheating. Should this occur a fault code will be displayed.Press the reset button (D) and the boiler will relight.If the fault recurs, turn off the boiler and consult a CORGIregistered installer or in IE a competent person.Flame failureShould this occur a fault code will be displayed.Press the rest button (D) and the boiler will relight.If the fault recurs, turns off the boiler and consult a CORGIregistered installer or in IE a competent person.Loss of system water pressureThe gauge (H) indicates the central heating system pressure. Ifthe pressure is seen to fall below the original installationpressure of 1-2 bar over a period of time then a water leak maybe indicated. In this event conduct the re-pressurising procedure(see Trouble Shooting - Problem 4). If unable to do so or if thepressure continues to drop a CORGI registered installer or in IEa competent person should be consulted.DO NOT FIRE THE BOILER IF THE PRESSURE HASREDUCED TO ZERO FROM THE ORIGINAL SETTING.Condensate DrainThe condensate drain (G) must not be modified or blocked.Blockage of the condensate drain, caused by debris or freezing,can cause automatic shutdown of the boiler.If freezing is suspected and the pipe run is accessible anattempt may be made to free the obstruction by pouring hotwater over the exposed pipe and clearing any blockage from theend of the pipe. If this fails to remedy the problem theassistance of a CORGI registered installer or in IE a competentperson should be sought.Escape of gasShould a gas leak or fault be suspected contact your local gassupplier without delay.Do NOT search for gas leaks with a naked flame.CleaningFor normal cleaning simply dust with a dry cloth.To remove stubborn marks and stains, wipe with a damp clothand finish off with a dry cloth.DO NOT use abrasive cleaning materials.MaintenanceThe appliance should be serviced at least once a year by aCORGI registered installer or in IE a competent person.Approx. flow temperatures for the boiler thermostat settings are:Knob Setting Flow Temperatureo C oFMinimum 30 86Maximum 82 180F. CH thermostat knob.G. Condensate drain.H. Pressure gauge.J. DHW thermostat knob.

/ 4

Related manuals for Ideal Boilers HE24