Harry Taylor HT2000 Manual
Also see for HT2000: ManualInstallation & servicing manualManualInstallation & servicing manualInstallation, service and user manual
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Contents
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20separate isolating cock positioned adjacentto and upstream of the union which must besited outside the heater.The isolating cock should be of the 90 0 turntype and should be clearly marked OPEN /CLOSED it should also be installed so as tofall to the closed position.An approved gas jointing compound mustbe used on all joints and unions and thesystem purged and tested for soundnessprior to final connection.The connection to the heater can be madeby way of either an approved flexiblecoupling or rigid connection. Threadedconnections must comply to ISO 288/1 orISO 7/1 further information concerningaccepted European practice is detailed inBS EN1020.The diameter of the pipework from theisolating cock to the burner must not be lessthan the diameter of the connection into themultiblock.NoteReference to The Institute of Gas Engineerspublications Utilisation Procedures IGE/UP1and IGE/UP2 together with reference toBS6891 is strongly advised.3.0 CommissioningNoteIt is a requirement that only suitablyqualified and competent personnel areallowed to undertake the commissioningof the heater.It is also strongly recommended thatprior to commissioning the engineersfamiliarises themselves with the heater.the specific requirements of theinstallation / application, and theinformation contained within the manual.WarningAll heaters are subject to a rigorous testprogramme prior to despatch, whilst such aprogramme does involve pre-commissioningand the setting of the heater to operateefficiently and within its designedoperational limits this does not mean thatthe function of thorough on sitecommissioning is less important.It is strongly recommended that theequipment used for the sampling andanalysis of the flue gases is accurate towithin +/- 0.1% and maintained so that it isregularly calibrated.The following pre-commissioning checksshould be undertaken, having first ensuredthat the gas and electrical supplies areturned off.(a) Check that all panels and fasteners aresecure and in place.(b) Check that the heater is mounted safely.(c) Check that the flue is sealed, secured,and adequately supported.(d) Check that the fan is free to rotate, thatthe fan is secured to its shaft, and that theguards and fan assembly are all in placeand properly secured.(e) Check that the heater is installed so thatit is not tilted and remains square.(f) Check that the outlet louvres (Axialheaters) are set to offer minimum resistanceto air flow.3.1 Electrical pre-testsThe electrical safety checks must includethe followinga) Test for earth continuity.b) Test for resistance to earth.c) Check live and neutral connections arecorrect.d) Check to ensure that when the externalcontrols operate to switch the heater off,power remains to the fan.3.2 Gas supply pre-testEnsure that the service pipework has beeninstalled purged and tested in accordancewith the relevant regulations, and that theinstallation is served by an adjacent isolatingcock. |
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