Glow-worm swift flow 75e Installation Instructions Manual page 22

11.3 Preparation for Lighting
Isolate the boiler from the mains electrical supply at the
external isolator.
Test for soundness and purge air from the gas supply.
Turn on the gas service cock, slot in line with the length
of the cock.
Loosen the burner pressure test point screw and connect
a suitable pressure gauge, see diagram 11.3.
221138C
1 1 C o m m i s s i o n i n g
SMALL
ADJUSTMENT
NUT (MAX.
PRESSURE)
CAP
22
LARGE
ADJUSTING
NUT (MIN.
PRESSURE)
SPINDLE
SCREW
TEST
POINT
ELECTRICAL
CONNECTOR
(GREY)
Diagram 11.3