Ideal Boilers i 24 Installation & Servicing Instructions Manual

Contents

Ideal Boilers i 24 Installation & Servicing Instructions Manual Manual pdf 67 page image

3i combi - User’s1 BOILER COnTROLSOperationWinter conditions - i.e. Ch and DhW required.Ensure the mode knob control (A) is set to winter ( )The boiler will fire and supply heat to the radiators but will givepriority to DHW on demand.summer conditions - i.e. DhW only required.Set the mode knob control to Summer ( ).Set the CH external controls to OFF.note. The pump will operate briefly as a self-check once every 24hours, regardless of system demand.Pre-heat is enabled if the pre-heat indicator (F) is lit. To switchpre-heat on or off move the DHW/Pre-heat control knob (B) fullyclockwise and then return it to the required DHW temperaturesetting.Control of water temperatureDomestic hot WaterThe DHW temperature is limited by the boiler controls to 64o Cmaximum at low draw-off rate, adjustable via the DHW temperaturecontrol (B).Due to system variations and seasonal temperature fluctuationsDHW flow rates/temperature rise will vary, requiring adjustment atthe draw off tap : the lower the rate the higher the temperature, andvice versa.Central heatingThe boiler controls the central heating radiator temperature to amaximum of 80oC, adjustable via the CH temperature control (C).The boiler is a high efficiency combination boiler which is mostefficient when operating in condensing mode.The boiler will operate in this mode if the CH temperature control (C)is set to the ‘e’ position (economy mode). This control should be setto maximum for very cold periods.Weather CompensationWhen the Weather Compensation option is fitted to the systemthen the CH Temperature Control (C) becomes a method ofcontrolling room temperature. Turn the knob clockwise toincrease room temperature and anti-clockwise to decrease roomtemperature. Once the desired setting has been achieved, leavethe knob in this position and the system will automatically achievethe desired room temperature for all outside weather conditions.To shut down the boilerSet the mode knob control to OFFTo relight the boilerRepeat the procedure detailed in ‘To light the boiler’.Frost protectionIf no system frost protection is provided and frost is likely duringa short absence from home, leave the heating controls (if fitted)at a reduced 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 ProtectionThe boiler controls will shut down the boiler in the event ofoverheating. Should this occur, a fault code will be displayed.Refer to fault chart.Flame FailureShould this occur a fault code will be displayed. Refer to faultchart.Approx. flow temperatures for the boiler thermostat settings are:Knob setting Flow TemperatureMinimum 40o C (104oF)Maximum 64o C (147oF)continued . . . . . .LegendA. Mode Control KnobB. DHW/Preheat Control KnobC. CH Control KnobD. Boiler StatusE. Burner ‘on’ IndicationF. Pre Heat on/off IndicationG. ProgrammerH. Pressure GaugeJ. Condensate DrainA B C DGHJEF19202122232412345678910111213141516171800IPREHEATSTATUS BURNERE24iMODEOFFMIN MIN MAXRESET PREHEATMAX