Ignition Check - Baxi 741 Installer's Manual

If method 2 is chosen, make sure that the areas at the back and towards the centre of the
fireplace floor are sound enough to take the eyebolts and screws. If these areas have
deteriorated due to prolonged use, they should be made sound with a suitable cement.
5.1.4 Installations using a metal flue box
The whole of the top surface of the metal flue box must be covered with a minimum
100mm layer of mineral wool or equivalent insulation (See figure 2).
5.2 Fireplace flue pull.
Close all doors and windows in the room in which the appliance is to be installed. After
confirming with a match that smoke is drawn into the flue, light a 13 gram smoke pellet
and check that there is a definite flow through the flue. Verify outside that the smoke
exits from one terminal only and that the termination is suitable. Observe, where
possible, upstairs rooms and loft spaces for signs of escaping smoke indicating a
defective flue. If there is not a definite flow warm the flue for a few minutes and repeat
the smoke pellet test. If there is still no definite flow the flue may need remedial work –
Do not fit the appliance until there is a definite flow through the flue.
Before attempting to install, it is worth checking that the ignition system performs
satisfactorily.
Set the control knob to the off position.
Depress the control knob and rotate it anticlockwise to the pilot ignition position. A
'click' will be heard as the integral piezo operates. A spark should be seen between the
electrode and pilot tip
Ensure that the electrode lead is connected to the terminal at the base of the
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electrode.
If the above is correct, check for damage to the electrode lead.
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INSTALLER GUIDE

6. IGNITION CHECK

If there is no spark check the following: -
.
Figure 8. Ignition operation
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