orifice is clear and that the thermocouple connections are sound. Replace the pilot unit
if necessary (see servicing section of this manual).
7.1.6
Check all the control settings. These are:-
7.2 Check burner pressure.
The appliance is pre-set to give the correct heat input at the inlet pressure shown in
section 1 of this manual. No adjustment is necessary. Check the burner pressure by
fitting a pressure gauge at the test point. The test point is on the pipe connecting the gas
tap to the lower injector. Check the pressure with the appliance alight and set at
maximum output (Control knob position 4).
After checking, turn off the appliance. Remove the pressure gauge and replace the test
point sealing screw. Relight the appliance. Turn to the maximum output position and
test around the sealing screw for gas soundness with a suitable leak detection fluid.
If all the above checks are satisfactory, continue with the installation. If not, check the
control and ignition circuitry and components as described in the servicing section of
this manual.
7.3 Test for spillage.
A spillage test must be made before the installed appliance is left with the customer.
7.3.1
Close all doors and windows in the room containing the fire.
7.3.2
Light the appliance and set the control knob to the maximum position (Position
4).
7.3.3
Leave the appliance on for seven minutes.
7.3.4
Insert the smoke match tube (with lighted match) into the side of the appliance
and against the back panel. Position the tube so that it is horizontal, against the back
panel and with its top edge touching the side of the draught diverter box. Slide the tube
until the indent in the tube is level with the diverter side (See figure 13).
7.3.5
The installation is satisfactory if the smoke is drawn into the diverter box. If an
appreciable amount of smoke escapes from above the flue spigot or from the sides leave
the appliance alight at the maximum setting for a further ten minutes and then repeat the
test. If the test is still unsatisfactory disconnect the appliance and seek expert advice.
7.3.6
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
Page 20
INSTALLER GUIDE
©
Baxi Heating U.K. Limited 2007.
Control Knob
Position
Burner appearance
1 / IGN
Centre section on low. Outer sections off.
2
Centre section fully on. Outer sections off.
3
Centre section fully on. Outer sections on low.
4
All sections fully on.
