Harry Taylor HT2000 Manual
Also see for HT2000: ManualInstallation & servicing manualManualInstallation & servicing manualInstallation, service and user manual
                                                | |
Contents
| 
21Connection from the supply to the heatermust also comply with the relevantregulations and must have been purged andsoundness tested by an authorised engineer.3.3 Ignition sequencePRE START DRY RUNIn order to test that all controls are in goodworking order, the control sequence shouldfirst be tested with the gas supply turned Off.Ensure gas isolating cock is in the Offposition.WarningIf during the following sequence ofoperations the heater fails to operatecorrectly the fault should be traced andrectified before proceeding, if necessaryreferring to section 5.0 fault diagnosis.a) Switch off the main electrical supply tothe heater.b) Turn off gas supply to the heater.c) Open side panel, and connectmanometers to the gas supply test point andto the main burner test point.d) Ensure outlet louvres are correctly set.e) Ensure fan rotation is not impaired orobstructed.f) Set room thermostat to its lowest setting.g) If a time switch is fitted ensure it is set toan on period.h) Switch on electrical supply.i) Use leak tester to test for soundness onthe unions and pipework.j) Operate the heater through the installedcontrol system.On start the signal will activate the flueventer for a pre purge period and in turn willmake the air proving switch, once made, theair proving switch will complete the circuit tothe control box and after a 30 second Delaythe automatic control should attempt light theburner, because the gas is turned off andflame cannot be established , the control boxwill go to LOCKOUT.k) Reset the control on completion of dry run.l) Open gas cock.m) Operate heater through installed control.The flue venter will pre purge the heater andin turn operate an air proving switch whichcompletes the electrical circuit to the controlbox, after a 30 second Delay the control willopen the gas solenoid valve and the mainburner will light.The flame can be observed at the burnermanifold, check that the burner is providing agood flame i.e. even and stable.n) Check pressure readings on themanometers, and continue to let the heaterfire for ten minutes.o) When the fan starts ensure that thedirection of rotation is correct , and that thefan start is within 2 minutes of burner ignition.CautionIf the fan fails to operate within approximately2 minutes and the heater goes to overheat itwill shut down through breaking the circuit tothe gas valve, the cause must be ascertainedand rectified before re-ignition.Once the limit thermostat has tripped out itmust be manually reset to allow re-ignition totake place.p) After ten minutes check burner headpressure is as specification - adjust asnecessary by removal of the gas pressureadjustment cover, and using a screwdriverturn the adjustment screw on the governor asfollows: Clockwise to increase, anti-clockwise to decrease.For Hi/Low and Modulation adjustment, referto the following procedures. |
Related manuals for Harry Taylor HT2000
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine