Ideal Boilers Henrad SE 30 FF Installation And Servicing Manual

Also see for Henrad SE 30 FF: User guide

8Henrad SE FF - InstallationGENERALTable 4 - Water flow rate and pressure lossIMPORTANT. It is absolutely ESSENTIAL to ensure, in practice,that products of combustion discharging from the terminal cannotre-enter the building or any other adjacent building throughventilators, windows, doors, other sources of natural air infiltration,or forced ventilation / air conditioning.If this should occur the appliance MUST be turned OFF, labelledas 'unsafe' and corrective action taken.TERMINALThe terminal assembly can be adapted to accommodate variouswall thicknesses. Refer to Frame 11 - Unpacking.AIR SUPPLYIt is NOT necessary to have a purpose-provided air vent in theroom or internal space in which the boiler is installed. Neither is itnecessary to ventilate a cupboard or compartment in which theboiler is installed, due to the low surface temperatures of the boilercasing during operation; therefore the requirements of BS 6798,Clause 12, and BS 5440:2 may be disregarded.WATER CIRCULATION SYSTEMThe boiler must NOT be used for direct hot water supply. For thetypes of system and correct piping procedure see Frames 1, and3 to 8.The central heating system should be in accordance withBS. 6798 and, in addition, for smallbore and microbore systems,BS. 5449.WATER TREATMENT - see Frame 9The hot water storage cylinder MUST be of the indirect type andshould preferably be manufactured of copper.Single feed, indirect cylinders are not recommended and MUSTNOT be used on sealed systems.The appliances are NOT suitable for gravity central heating norare they suitable for the provision of gravity domestic hot water.The hot water cylinder and ancillary pipework, not forming part ofthe useful heating surface, should be lagged to prevent heat lossand any possible freezing - particularly where pipes run throughroof spaces and ventilated underfloor spaces.The boiler must be vented.Draining taps MUST be located in accessible positions, whichpermit the draining of the whole system - including the boiler andhot water storage vessel. They should be at least 1/2" BSP nominalsize and be in accordance with BS. 2879.The boiler is fitted with a special drain plug which is provided todrain the BOILER ONLY in the event of the system drain plugbeing unable to do so.The hydraulic resistance of the boilers, at MAXIMUM OUTPUT,with an 11 o C (20 o F) temperature differential, is shown inTable 4.Boiler size SE30FF SE40FF SE50FF SE60FF SE70FF SE80FFBoiler kW 8.8 11.7 14.7 17.6 20.5 23.4Output Btu/h 30,000 40,000 50,000 60,000 70,000 80,000Water Flow l/sec 0.19 0.25 0.32 0.38 0.44 0.51Rate gpm 2.5 3.3 4.2 5.0 5.8 6.7Pressure kPa 4.2 6.7 10.0 13.7 11.2 13.7Loss m 0.4 0.7 1.0 1.4 1.2 1.4ft 1.4 2.3 3.3 4.6 3.8 4.6THERMOSTATIC RADIATOR VALVES (TRV)Caradon Plumbing Ltd. recommend that heating systemsutilising full thermostatic radiator valve control of temperature inindividual rooms should also be fitted with a room thermostatcontrolling the temperature in a space served by radiators notfitted with such a valve as stated in BS. 5449.When thermostatic radiator valves are used, the space heatingtemperature control over a living area having a heating requirementof at least 60% of the boiler heat output should be achieved usinga room thermostat whilst other rooms are individually controlled bythermostatic radiator valves. A higher proportion of TRVs may beused, provided that a bypass between the boiler flow and return isfitted, to ensure adequate flow when all TRVs are closed - howeverthis is NOT recommended as a large proportion of TRVs can restrictwater circulation and inhibit the condensing mode of condensingboilers, reducing fuel economy.For further information refer to the 'Good Practice Guide 143',publication of the Energy Efficiency Office, available from theBuilding Research Establishment, Garston, Watford WD2 7JR. Tel:01923 664 258ELECTRICAL SUPPLYWiring external to the appliance MUST be in accordance with thecurrent I.E.E. (BS.7671) Wiring Regulations and any localregulations which apply.The point of connection to the mains should be readily accessibleand adjacent to the boiler, except for bathroom installations wherethe point of connection to the mains MUST be situated outside ofthe bathroom.Note.Where a room sealed appliance is installed in a roomcontaining a bath or shower then the appliance and any electricalswitch or appliance control utilising mains electricity should be sosituated that it cannot be touched by a person using the bath orshower. See Frame 34 for details.CONDENSATE DRAIN. Refer to Frame 44A condensate drain is provided on the boiler. This drain must beconnected to a drainage point on site. All pipework and fittings inthe condensate drainage system MUST be made of plastic -noother materials may be used.IMPORTANT.Any external runs must be insulatedThe drain outlet on the boiler is standard 3/4 " (22 mm) overflowpipe.