Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing

Also see for ecoMAX pro 18 E: Installation instructions Installation instructions Instructions for use installation and servicing Instructions for use installation and servicing Instructions for use installation and servicing

Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing Manual pdf 21 page image

Commissioning 13Instructions for Use, Installation and Servicing ecoMAX pro 21The boiler will then continue to fire until the user con-trols are satisfied.Note: After the first power up the firing sequence chan-ges. After one minute stabilisation time the boiler willramp slowly to full rate rather than going immediately tofull rate, this feature is designed to cope with smallsystem requirements.13.5 Testing - GasThe boiler is supplied ready adjusted and no further gasadjustments are necessary, however both the gas inletworking pressure and the maximum gas rate should bechecked at least 10 minutes after the burner has lit.The gas inlet working pressure can be checked at thepressure test point on the gas valve (Fig 13.2.). The gasinlet working pressure should be 20 mbar when theboiler is firing at full rate.After testing the inlet pressure remove the U gauge,tighten the sealing screw and test for tightness.The approximate gas rates are:18 E : 2.00 m 3/h28 E : 3.02 m 3/hNote: The burner pressure cannot be measured at thegas valve due to the fan/burner design.Replace the inner and front casing panels.Record appliance working gas inlet pressure (mbar) inBenchmark Installation, Commissioning and Service logbook.13.6 Testing - Heating SystemCheck that all remote controls are calling for heat. Theboiler will fire automatically. Fully open all radiatorvalves, flow control valve ‘A’ and bypass valve ‘B’ iffitted, see Fig. 5.4.Balance the radiators as required and if fitted adjustvalve ‘A’ to give the required system differential. Turn offall radiators that can be shut off by the user and checkto see if less than the maximum differential allowed of20 °C can be achieved across flow and return.Allow the system to reach maximum temperature thenswitch off the boiler by isolating from the electricalsupply.Fig. 13.2PRESSURE TESTPOINTELECTRICALPLUGGAS CONTROLVALVETHROTTLEOFFSETADJUSTMENTDrain the entire system rapidly whilst hot, using thedrain tap at the lowest part of the system. Fill and ventthe system as described previously.Lock or remove the handles from controls valve ‘A’ andbypass valve ‘B’ to prevent unauthorised adjustment.13.7 User Controls and OptionsThe mains/reset switch is used to restart the boiler aftera fault condition has occurred, i.e. ignition failure.The user display (see section 3.3) allows the user to setthe desired central heating temperature.13.8 Temperature DisplayThe boiler shows the operating temperature of the unit.13.9 Pump Exercise ProgrammeAfter a power cut or every 24 hour in frost setting/summer mode the pump will run for one minute toprevent it from sticking. This will also occur duringnormal operating if there is no demand for more than24 hours.13.10 Handover to userInstruct and demonstrate the lighting procedure andadvise the user on the safe and efficient operation ofthe boiler. Instruct on and demonstrate the operation ofany heating system controls.Advise that to ensure the continued efficient and safeoperation of the boiler it is recommended that it ischecked and serviced at regular intervals. The frequencyof servicing will depend upon the installation conditionsand usage, but in general, once a year should beadequate.Draw attention, if applicable, to the current issue of theGas Safety (Installation and Use) Regulations, Section35, which imposes a duty of care on all persons who letout any property containing a gas appliance.It is the Law that any servicing is carried out by acompetent person.Advise the user that, like all condensing boilers thisappliance will produce a plume of condensation from theflue terminal in cool weather. This is due to the highefficiency and hence low flue gas temperature of theboiler.Advise the user of the precautions necessary to preventdamage to the system, boiler and the building, in theevent of the heating system being out of use duringfrost or freezing conditions.Advise the user that the permanent mains electricalsupply SHOULD NOT be switched off, as the built infrost protection and pump saver program would not beoperable.RReemmiinnddeerr,, leave these instructions and the ‘Benchmark’logbook with the user.