Ideal Boilers Classic RS 300 Installation & Servicing Manual

Ideal Boilers Classic RS 300 Installation & Servicing Manual Manual pdf 18 page image

18Classic RS - Installation & ServicingINSTALLATION25 COMMISSIONING AND TESTINGA. ELECTRICAL INSTALLATION1. Checks to ensure electrical safety should becarried out by a competent person.2. ALWAYS carry out preliminary electricalsystem checks, i.e. earth continuity, polarity,resistance to earth and short circuit ,using asuitable test meter.B. GAS INSTALLATION1. The whole of the gas installation, including the meter,MUST be inspected and tested for soundness, andpurged in accordance with the recommendations ofBS. 6891. In IE refer to I.S.813:2002.2. Purging air from the gas installation may beexpedited by loosening the union on the gas servicecock on the boiler and purging until gas is detected.3. Retighten the union and check for gas soundness.WARNING. Whilst effecting the required gas soundness test and purging air from the gas installation,open all windows and doors, extinguish naked lights and DO NOT SMOKE.24 FROST PROTECTIONCentral heating systems fitted wholly inside the house do notnormally require frost protection as the house acts as a 'storageheater' and can normally be left at least 24 hrs. without frostdamage. However, if parts of the pipework run outside the houseor if the boiler will be left off for more than a day or so, then a frost'stat should be wired into the system.This is usually done at the programmer, in which case theprogramme selector switches are set to 'Off' and all other controlsMUST be left in the running position. The frost 'stat should besited in a cold place but where it can sense heat from the system.Wiring should be as shown, with minimal disturbance to otherwiring of the programmer.Designation of the terminals will vary, but the programmer andthermostat manufacturer's leaflets will give full details.Diagram A shows a double pole frost 'stat, which should sufficefor all systems which do not use the 'OFF' terminals of theprogrammer.Diagram B shows a 'change-over' frost 'stat, which will covermost systems which do use 'CH OFF.' If, however, on such asystem the HW pipework is in an isolated part of the house, asecond frost 'stat may be used to protect it. If in doubt, askyour installer for advice.The Benchmark Log Book or equivalent self certification should be completed and signed to demonstrate compliance withBuilding Regulations.INSTALLATION