PureVision range, including the Classic versions may be fitted with an internal stainless steel active baffle assembly which fulfils a number of functions depending upon the setting mode as follows:
a) IGN Position: Direct access of ignition heat into flue-way to start up cold, inactive flues in a quicker and more user-friendly way.
b) Auto Position: Opening of the flue way when refuelling to enhance the fume removal capacity of the stove when the door is open.
c) Closed (Manual) Position: A manual override position to retain the baffle in the permanently closed position when its assistance is not required.
d) In the case of a low draught flue where it has been improved as far as possible by conventional means (e.g. flow enhancing terminal, increasing height and diameter and reducing bend severity and number where possible) the removable sections of the baffle can ease gas flow to enable safe use of the stove where otherwise it may not be possible to continue to use a wood burning stove (see 4 below).
The baffle setting mode is controlled by the stainless steel rod that protrudes through the fascia panel to the top left of the stove beneath the top plate. The rod can be operated when hot only by using the stainless steel multi-tool and stove gloves supplied with the stove.
A) Sliding the operating rod across to the right side IGN position allows the baffle flap to remain in the open position (regardless of the door position) thereby allowing products of combustion straight into the flue pipe during ignition. This heats up the flue quicker to generate draught sooner and enables lower emissions to be produced during a shorter ignition phase.
B) Sliding the operating rod to the middle closed position and depressing it firmly inwards and downwards into the slot until it latches fully into the CLOSED position allows the baffle flap to remain in the closed position permanently during all operation. This is useful where flue draw is very good even when the flue is cold.
C) Sliding the operating rod across into the left side AUTO slot position where the rod will be depressed by the door as it closes causes the baffle flap to open when the door is open and closes it when the door is closed.
Firstly check that the baffle is correctly sitting on its mountings. The degree of closing of the baffle flap is controlled by the operating rod and it must be 100% closed when the door is closed. This rod is adjustable by screwing in and out of the link on top of the firebox which is part of the operating mechanism.
Screwing the rod outwards (counter-clockwise) causes the baffle to close further when the stove door is closed. Screwing the rod in (clockwise) causes the mechanism to become shorter thereby pushing the baffle less distance when the door is closed.
NOTE: The baffle must be sitting squarely on its supports for this adjustment to be correctly set so firstly remove the baffle from within the firebox (no tools required – see instruction book) and clean the rear baffle support plate.
If the installation is suffering from low flue draught and stove operation is sluggish and slow despite known dry high quality fuel being used then the flue should be improved as far as possible.
This means removing or at least easing any bends and having them as far up the flue system as possible; using insulated flue as far as possible within and certainly outside of the building; increasing diameter to minimum 6” or above where possible; increasing height of the flue by means of additional terminals or flue lengths; adding anti downdraught or draught increasing cowls before making any changes to the stove.
Assuming that stove operation has not improved much once this has been carried out then as a last resort the ‘wing’ pieces on the rear of the baffle may be removed to reduce restriction within the stove itself and help to compensate for the lost draught within the flue system.