Double Check Valve
& Stop Valve
Temporary Filling
Loop
Fitting the Valves to the Taps
Fig. 44b
Hose and
Fitting
© Baxi Heating UK Ltd 2008
Cold Inlet
Fig. 44a
Stop Valve | CH Return |
|
Temporary Loop and
Flanged Washers
Pressure
Gauge
Blanking
Plugs
Fig. 44c
10.0Installation
10.3Fitting the Filling Loop
1.The filling loop supplied with the boiler can be connected to the taps on the wall plate at this point.
2.The filling loop is to be connected between the mains cold water inlet and central heating return isolation taps.
3.The loop and valves must be connected as shown in the diagram (Fig. 44a).
4.Note the orientation of the flow direction arrows on the stop valve and double check/stop valves.
5.Remove the end caps from the isolation taps and put to one side. Connect the valves to the taps. Ensure that the fibre washers supplied are used on these joints.
6.Connect the temporary loop, ensuring that the seals are fitted.
To fill, test and flush if required (Fig. 44c)
7.Take the blanking plugs from the kit, and using washers supplied with the boiler, connect them to the central heating flow and return taps, and the cold inlet tap. The system can now be filled by opening the cold inlet supply and stop valves.
8.If desired a suitable gauge can be connected to one of the taps so that the system may be accurately pressurised.
9.All joints, fittings and system components can now be examined for soundness at operating pressure.
10.The system can be flushed by turning off the central heating tap and connecting a suitable fitting to the loose nut. From the fitting a hose pipe can be run to the nearest convenient drain. When the tap is reopened the system will flush.
11.Remove the blanking plug(s), pressure gauge and flushing equipment from the appliance if used.
12.Continue with the installation and commissioning.
13.The filling loop must be disconnected and completely removed after the system is pressurised.
14.Hand tighten the two previously removed end caps to the stop valve and double check valve.
29