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10.0 Installation
10.3 Fitting the Filling Loop Kit
1. The filling loop kit supplied with the boiler can be
connected to the taps on the wall plate at this point.
(Either one of two types of loop kit will be supplied -
both function in the same way, differing only in detail).
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 described
in the instructions supplied with it.
4. Note the orientation of the flow direction arrows on
the stop valve and double check/stop valves.
5. Remove the blanking caps from the mains cold water
inlet and central heating return isolation taps (Fig. 42a).
Connect the valves to the taps, ensuring 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. 42b)
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. Depending upon the type of kit supplied either hand
tighten the two previously removed blanking caps to the
stop valve and double check valve, or use the caps
supplied in the kit.
Fig. 42a
CH Return
Cold Inlet
Blanking
Plugs
Pressure
Gauge
Hose and
Fitting
Fig. 42b
Blanking Caps
Note: Full instructions are provided in
the Filling Loop Kit pack.
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© Baxi Heating UK Ltd 2012