8
Chemical dosing
System Filter– 6 720 803 839 (2014/03)
▶ Using a suitable spanner open the isolation valves (If the
filter is used on a sealed system, recharge the system to
correct working pressure).
Fig. 15
5
Chemical dosing
▶ Remove the "quick dose" air vent with a standard radiator
key.
The built-in, one-way valve will prevent water from
escaping.
Fig. 16
▶ Attach the chemical adaptor and feed in the chemical.
▶ Wait five seconds before removing the adaptor.
Fig. 17
▶ Replace the quick dose air vent [1].
▶ Allow the system to circulate for 30 seconds.
Fig. 18
The adaptor on market leading chemical
additives, either liquid or concentrate form,
will fit onto the "quick dose" air vent.
6720803839
-14.2W
o
6720803839
-15.2W
o
1
6720803839
-16.2W
o
6720803839
-17.2W
o
1
