Vaillant ecoMAX pro 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 Instructions For Use Installation And Servicing Manual pdf 23 page image

Instructions for Use, Installation and Servicing ecoMAX pro 2312 Commissioning12.4 Initial LightingThe lighting procedure of the boiler is fully automated.To prepare the boiler for initial lighting first ensure that allexternal controls are not calling for heat.With the front casing panel and inner casing panelremoved turn on the mains electrical supply. Slide the On/ Off control down to the I position to turn on the boiler.The operating indicator will illuminate (green) to showthat the boiler is on.Now adjust the boiler thermostat to its lowest setting bypushing the mode button ( ) (see fig 3.1.) until theradiator symbol is displayed. Push the - button until thelowest temperature possible is selected. Now returnto the normal mode by pushing the mode button, thedisplay will now show the current temperature of water inthe boiler.Now turn on external heat demand to boiler.The fan should start and after a few seconds the ignitionwill commence.NOTE:Allow the boiler to run on minimum untilcommissioning is complete.If the burner fails to light the fan will stop. Initially thismay be due to air in the gas supply line.The boiler will have three attempts at ignition.To reset the boiler slide the On / Off control to the Off (O)position and after 5 seconds back to the On (I) position.The boiler should now restart.Once the boiler has lit, allow the system to warm at theminimum temperature setting to purge any air from thesystem.Once the system has been purged of air, the temperatureof the central heating water can be adjusted to thedesired setting by pushing the mode button ( ) (seefig 3.1.) until the radiator symbol is displayed. Pushingthe + or - buttons will then set the water temperatureas desired. (Typical setting temperatures for a normalradiator heating system will be in the range of 60°C to80°C. Note that set temperatures below 60°C will notsufficiently heat any hot water cylinder). To return tothe normal mode push the mode button ( ) until thedisplay shows the current temperature of water in theboiler.The boiler will then continue to fire until the user controlsare satisfied.NOTE:After the first power up the firing sequencechanges. After one minute stabilisation time theboiler will ramp slowly to full rate rather thangoing immediately to full rate, this feature isdesigned to cope with small systemrequirements.12.5 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 12.2.). The gasinlet working pressure should be 20 mbar when theboiler is firing at full rate. After testing the inlet pressureremove the U gauge, tighten the sealing screw and testfor tightness.The approximate gas rates are:18 E : 2.00 m3 /h 28 E : 3.02 m3 /hNOTE: The burner pressure cannot be measured at thegas valve due to the fan/burner design. Replace theinner and front casing panels. Record appliance workinggas inlet pressure (mbar) in Benchmark Installation,Commissioning and Service log book.Functional checksProcedure:After installing and checking the gas supply pressure,perform a function check before commissioning theappliance and handing over to the user.• Commission the appliance according to the relevantoperating manual.• Check the gas supply pipe, exhaust system, heatingsystem and the hot water lines for leaks.• Check that the flue system has been installed properlyaccording to the flue system assembly manual.• Check for ignition and an even flame on the burner.• Perform a function check on the heating system (seeSection 12.6).• Hand over the appliance to the user (see Section12.10).12.6 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’, see fig6.4.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 check tosee if less than the maximum differential allowed of20°C can be achieved across flow and return. Allow thesystem to reach maximum temperature then switch offthe boiler by isolating from the electrical supply.Drain the entire system rapidly whilst hot, using the draintap at the lowest part of the system. Fill and vent thesystem as described previously.Lock or remove the handles from controls valve ‘A’ toprevent unauthorised adjustment.