Balanced & Low Level Terminal Clearances - Potterton Statesman 45/50 Installation & Service Instructions Manual

Extract Fans
If the room in which the appliance is located also has an
extract fan the performance of the appliance must be
unaffected when the fan is running with all doors and
windows closed.
Combustion & Ventilation Air for Balanced Flue Oil Fired Boilers
FREE AREAS OF GRILLES ARE mm
Balanced Flue
Boilers fitted with balanced flues must only fire Kerosine and will not operate satisfactorily unless the free air requirements
have been satisfied.
Consideration should be given to the texture of the wall onto which the low level flue terminal is fixed. As with all heat
emitting devices the warm air from the terminal will encourage the accumulation of dirt which will at some time require
removal with a detergent based cleaning fluid.
Clearances Required Around Balanced and Low Level Discharge Flues Fitted to Oil Fired Boilers
See Fig. 13
A Below a gutter or sanitary pipework
B Horizontal from opening, airbrick window etc.
C Above ground or balcony level
D Below eaves or balcony
E From an internal or external corner
F From a terminal facing a terminal
Part No. 5102478
Draught Breaks
When an appliance with a draught break is fitted in a room
add 550mm
inlet.
When an appliance with a draught break in a compartment
which is ventilated as noted above, no additional allowance
is required.
2
PER/KW OF APPLIANCE RATING (OUTPUT)
G From a surface facing the terminal
H Vertical from terminals on the same wall
I Horizontal from terminals on the same wall
J Below an opening, airbrick, window etc.
K From vertical sanitary pipework
2 /kW to the free area of the combustion air
Pre-Installation Requirements
Fig. 12
19