Vaillant TURBOmax VUW 242 E Instructions For Installation And Servicing

Also see for TURBOmax VUW 242 E: Instructions for installation and servicing Instructions for use

Supplied By www.heating spares.co Tel. 0161 620 667723fig. 32GW 634/05.4 Filling the heating systemThe boiler primary circuit and theheating system should be filled usinga filling method as described inSection 3.7.2.Ensure that the boiler CH servicevalves (3, fig. 31) are open.Partially open the filling valve andallow water to enter the system.Starting with the lowest radiator, openthe radiator air release until water(clear of bubbles) is emitted.Repeat this at all radiators until thecomplete system is full, all air lockshave been cleared and the boilerpressure gauge reads 1.5 Bar.Release any air from the pump byslackening the centre screw (1, fig. 32).The boiler is equipped with anautomatic air release valve. To allowthis to vent the boiler, the cap on top(2, fig. 32) must be slackened by 1-2turns. (This cap must be left slackenedduring boiler operation to ensure anyresidual air or system gases arereleased).Check the heating system and boilerconnections are sound.5.5 Initial system flush ('cold')The whole of the heating system mustbe flushed out at least twice: oncecold, and once hot as instructed laterin Section 5.12.Open all radiator or heating valvesand boiler CH service valves (3, fig.31) and drain the heating system andboiler completely from the lowestpoints of the system via 1 /2 in. BSPdrain taps (opened full bore to removeany installation debris prior to lightingthe boiler).Refill the heating system as describedin Section 5.4: Filling the heatingsystem.Check the operation of the pressurerelief valve by rotating the knob onthe valve.