Honeywell HR 40 Installation And Operating Instructions Manual page 7

3. Installing valve lantern
1. Turn the adjustment dial (3) of the
valve lantern to the left until the
nose (1) of the adjustment dial is
positioned at the stop (2) of the
housing.
2. Slide the valve lantern onto the valve
or adapter.
The flat area on the valve lantern
head must point upwards.
3. Move the knurled nut forwards and
tighten it firmly by hand (do not use a
tool for this!).
The valve is now open and, with the central heating switched on, the
radiator warms through.
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