Introduction
7
All hoppers are supplied with a
rectangular blanking plate fitted on the
top rear panel. This can be removed, as
required, to allow the fitting of the Grant
SPIRA-VAC pellet feed system. Refer to
Installation Instructions supplied with
the Grant SPIRA-VAC system for further
details.
This blanking plate has a single round
‘knock-out’ to provide an entry into the
hopper from an auger supplying pellets
from a bulk hopper system. This
knockout is positioned to ensure the
pellets drop into the hopper and
operate the hopper contents switch.
Only this opening MUST be used as
making another opening in the
intermediate hopper could affect the
operation of the contents switch.
Electrical connection for either a bulk
auger or Grant SPIRA-VAC system, if
required, is made using the 6-way
electrical plug and flying lead supplied
factory-fitted at the rear of the hopper.
Refer to Section 7 for connection
details.
Always ensure that the door and top
panel of the boiler hopper are fitted to
ensure no foreign debris enters the
hopper. If a bulk system with an auger
is fitted, ensure that the bulk auger
does not impede the opening of the
hopper door.
1.4.5 Pellet Feed Auger. All Grant
hoppers are supplied with either one or,
on double boiler hoppers, two 1.2m
pellet feed augers. These are set at a
fixed angle of 45° to maintain a
consistent feed. If the pellet feed auger
angle is altered the input to the boiler
will also be altered.
The pellet feed auger is a hollow spiral
type. Its function is to deliver the pellets
from the hopper to the burner. The
output of the boiler is determined by
varying the on/off periods of the pellet
feed auger motor. Refer to Section 2.2
for pellet feed data.
1.5 Boiler Cleaning and
Servicing
Grant SPIRA condensing wood pellet
boilers are equipped with an automatic
cleaning system for each of the two
heat exchangers and also for the
burner brazier.
Care must be taken to avoid contact
with hot surfaces.
Always wait for the boiler to cool
down before opening the
combustion chamber door and
removing the ash pan.
The boiler MUST be serviced either
ANNUALLY or when a service is
indicated on the burner control panel
display, whichever comes first.
Servicing should only be carried out
by a Grant Approved Installer and
details of each service should be
recorded in the Service Log in the
back of the User Operating Manual.
!
WARNING
The ash pan (located inside the
combustion chamber) will need to be
periodically emptied. This simple
task must be carried out by the user
at MONTHLY intervals for the FIRST
THREE MONTHS. Thereafter, the ash
pan should be emptied regularly, on
at least a monthly basis, or as
indicated by the amount of ash
found during the first three months.
Two carrying handles are supplied
with the boiler to allow removal of
the ash pan when hot.
!
CAUTION
The amount of ash produced varies
between the different pellet brands
and this will affect the frequency of
cleaning and maintenance required.
!
NOTE
To Next Page
Loading...
