Flame Supervision And Spillage Monitoring System - Baxi Fires Division 740FS Installer's Manual

4. The smoke match should be placed horizontally into the convection box at the right
hand side. There is a notch in the black cross member. Insert the tube so that the neck of
its flared end is 5mm passed and in contact the cross member (See figure 45).
The installation is satisfactory if the
smoke is drawn into the appliance.
If the smoke is not drawn into the
appliance leave the appliance alight at the
maximum setting for a further ten
minutes and then repeat the test. If the
smoke is still not drawn into the
appliance inspect the sealing to the
fireplace surround. If the sealing is
satisfactory but the appliance is installed
with the flue restrictor (See section 8
point 9) remove the restrictor, reseal the
appliance and retest. If smoke is still not
drawn into the appliance disconnect the
appliance and seek expert advice.
5. If the above test is satisfactory open all internal connecting doors, hatches, etc. in the
room. Keep all doors and windows that open to the outside of the building closed.
Recheck for spillage as above. If an extractor fan is installed in the same room as the
appliance or a connecting room, check that spillage does not occur with the fan
operating and all doors and other openings between the fan and the appliance open.
If the smoke is drawn into the appliance, continue with the installation. If the test is not
satisfactory disconnect the appliance and advise the customer of the cause of
failure.

15.3 Flame supervision and spillage monitoring system.

This pilot unit includes a system that will automatically shut off the gas supply if the
pilot flame goes out or if there is insufficient oxygen due to spillage or poor ventilation.
Check that the system operates properly as follows;
1. Light the appliance. Set the slide control to the maximum burning position and leave
for one minute.
2. Set the control to the 'Low' burning position. Isolate the gas supply at the inlet 'T'
connector. The pilot and main burner will go out. Note the time when the pilot goes
out. Listen for a snap sound at the gas tap. Note the time when the sound is heard.
This sound is caused by an electromagnetic valve shutting off the gas supply through
the tap. The valve is located in the body of the tap. The valve should operate within 60
seconds of the pilot going out. If the valve does not operate within this time limit do
not allow the appliance to be used until the fault has been corrected.
This monitoring system must not be adjusted, bypassed or put out of operation.
©
Baxi Heating U.K. Limited 2007.
INSTALLER GUIDE
Figure 45. Smoke match tube position
(Shown with 'Visage' fascia)
Page 37