d)
Drill 6 off holes in the front face of the opening in positions to match
those in the front frame of the firebox as shown below in Fig. 7.
Fig. 7
e)
Secure the firebox to the opening using the six off No. 12 x 40mm
screws provided, ensuring that the foam seal is consistent around the
opening, and that it forms an effective seal.
f)
Re-fit the burner tray onto the weld studs on the base of the firebox,
and tighten the nuts securely.
2.4
GAS TIGHTNESS AND INLET PRESSURE
a)
Remove the pressure test point screw from the inlet elbow and fit a
manometer.
b)
Turn on the main gas supply and carry out a gas tightness test.
c)
Depress the control knob and turn anti-clockwise to the position marked
pilot. Hold in the control knob for a few seconds to purge the pipe work
then press the igniter button. The burner should light, continue to hold
the control knob for a few seconds then turn to the full-on position.
d)
Check that the gas pressure is 20.0 mbar (+/- 1.0mbar) 8.0 in w.g.(+/-
0.4 in w.g.)
e)
Turn off the fire, remove the manometer and refit the pressure test point
screw. Check the pressure test point screw for gas tightness with the
appliance turned on using a suitable leak detection fluid or detector.
627mm CRS
11
