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Zanussi ULTRA COMBI 30 User Manual
Also see for ULTRA COMBI 30: Installation and servicingInstallation and servicing
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4 User’s3. SYSTEM WATER PRESSUREThe system pressure gauge (G - see page 3)indicates the central heating system pressure.If the pressure is seen to fall below the originalinstallation pressure of 1-2 bar over a period oftime and continue to fall then a water leak maybe indicated. In this event re-pressurise thesystem as shown below. If unable to do so or ifthe pressure continues to drop a Gas Safe Registered Engineer orin IE a Registered Gas Installer (RGII) should be consulted.THE BOILER WILL NOT OPERATE IF THE PRESSURE HASREDUCED TO LESS THAN 0.3 BAR UNDER THIS CONDITION.To Top up the system :-1. Ensure both A & B handles (blue) are in closed position (asshown below)2. Remove the plug and cap and retain.3. Connect the filling loop to the Domestic Hot Water (DHW) inlet andtighten. Also ensure that the other end of filling loop is hand tight.4. Turn the Domestic Hot Water (DHW) Inlet A blue handle tothe horizontal position.5. Ensuring no leaks are seen, gradually turn the filling loophandle (blue) B to the horizontal position.6. Wait for the pressure gauge to reach 1 to 1.5 bar.7. Once pressure is reached turn valves A & B back to theclosed position.8. Disconnect the filling loop, replace cap and plug. Note therecan be some water spillage at this point.EFFICIENT HEATING SYSTEM OPERATIONThe boiler is a high efficiency, condensing appliance which willautomatically adjust its output to match the demand for heat.Therefore gas consumption is reduced as the heat demand isreduced.The boiler condenses water from the flue gases whenoperating most efficiently. To operate your boiler efficiently(using less gas) turn the central heating temperature knob(C) to the ‘ ‘ position or lower. In winter periods it may benecessary to turn the knob towards the ‘max’ position to meetheating requirements. This will depend on the house andradiators used.Reducing the room thermostat setting by 1ºC can reduce gasconsumption by up to 10%.WEATHER COMPENSATIONWhen the Weather Compensation option is fitted to the systemthen the central heating temperature knob (C) becomesa method of controlling room temperature. Turn the knobclockwise to increase room temperature and anti-clockwiseto decrease room temperature. Once the desired setting hasbeen achieved, leave the knob in this position and the systemwill automatically achieve the desired room temperature for alloutside weather conditions.BOILER FROST PROTECTIONThe boiler is fitted with frost protection that operates in allmodes, provided the power supply to the boiler is alwaysturned on. If the water in the boiler falls below 5ºC, the frostprotection will activate and run the boiler to avoid freezing.The process does not guarantee that all other parts of thesystem will be protected.If a system frost thermostat has been installed, the boiler mustbe set in winter mode, ‘ ’, for the system frost protection torun.If no system frost protection is provided and frost is likelyduring a short absence from home it is recommended to leavethe system heating controls or built in programmer (if fitted)switched on and run at a reduced temperature setting. Forlonger periods, the entire system should be drained.BOILER RESTARTTo restart the boiler, when directed in the listed fault codes (seesection 8), turn the mode knob (D) to ‘restart’ position andIMMEDIATELY turn knob back to required setting. The boilerwill repeat its ignition sequence. If the boiler still fails to startconsult a Gas Safe Registered Engineer or in IE a RegisteredGas Installer (RGII).MAINS POWER OFFTo remove all power to the boiler the mains power switch mustbe turned off.Filling PositionCapPlugFillingLoopBAStarting PositionCapFilling LoopHandle (Blue)Domestic Hot Water(DHW) Inlet ValveFillingLoopBAPlug |
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