therefore lead to the termination of the guarantee and of
the manufacturer’s responsibility for the product.
T R Engineering Ltd domestic pellet appliances run
exclusively on pellets with a diameter of 6mm.
3.2 Considerations for Installation
IMPORTANT!
Installation and assembly of the appliance must be carried
out by qualified personnel.
The appliance must be installed in a suitable position to
allow the normal operations of opening and ordinary
maintenance.
The site must be:
Capable of providing the environmental conditions for
operation.
Equipped with power supply 230V 50Hz (EN73-23).
Capable of taking an adequate system for smoke discharge.
Provided with external ventilation complying with CEI 64-8.
The appliance must be connected to a flue pipe or an
internal or external vertical duct conforming to current
standards UNI7129 – 7131 9615.
The boiler must be positioned in such a way that the power
isolation fuse is accessible.
IMPORTANT!
The boiler must be connected to a flue pipe or a vertical
duct which can discharge the fumes at the highest point of
the building.
The fumes are however derived from the combustion of
wood products, and if they come into contact with or close
to walls, they can cause smoke staining.
Also take care because the fumes are very hot and almost
invisible, and can cause burns on contact.
3.3 Operating Area
For proper functioning, the appliance should be positioned in
a location where it is able to take in the air necessary for
combustion of the pellets (about 40m
3
/h must be available),
as laid down in the standard governing the installation and in
accordance with local national standards. All louvers on the
external casing of the boiler must be un-obstructed at all
times as these allow air for combustion and for cooling to
enter the appliance enclosure. Heavy snowfall can also
obstruct the air in-take louvers and cause the appliance to
not burn clean. Smoke emanating from the flue is a symptom
of this. Snow must be cleared from around the appliance at
the earliest opportunity.
Where the appliance is to be installed indoors it is not
permissible to install the appliance where another heating
appliance is installed (fireplace, stove, etc.) which does not
have its own independent air intake. Locating the appliance
in a room with an explosive atmosphere, e.g. workshop or
tool shed, is prohibited. The floor of the room where the
appliance is to be installed must be strong enough to take
its weight.
If the walls are flammable, position the appliance with a
clearance to the rear of at least 45cm. For flammable walls,
keep a minimum distance of 450mm at the rear, 300mm on
the sides and 1500mm at the front.
If the flooring is made of wood, provide a floor protection
surface in compliance with current national standards.
Service Clearances
The minimum service clearances around the appliance are as
follows:
Rear – 600mm
Side (lid hinge side) – 600mm
Side lid open side) – 900mm
Front – 1200mm
3.4 Connection of the Flue
A full range of straight, offset, elbow and ‘T’ elements is
available to overcome any obstruction which the flue should
avoid. The proper draught conditions in the flue are critical
for the efficient working of wood pellet boilers. The flue can
exit the boiler house/garage through the roof or through the
wall by using a bend on the flue. The combustion works in
negative pressure. The smoke duct for the discharge of
fumes will also be under negative pressure when connected
to an efficient flue pipe as directed.
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