Section 10: Side Pellet Store
Page 42
10.1 General
The optional side pellet store for the Grant External wood pellet boiler
is designed to provide an increased storage capacity, allowing the
boiler to run for longer periods before topping-up is required.
The capacity of the side pellet store is 140kg. With the 80kg capacity
of the boiler pellet hopper this gives a total pellet storage capacity of
220kg.
This side pellet store is the same external design as the External
Vecta boiler and is designed to be located at the right hand side of the
boiler only. It incorporates an auger to automatically transfer pellets
from the side pellet store to the boiler pellet store when activated by
the contents switch. Refer to Section 10.2.
this side pellet store can only be fitted on the right hand side
of the Grant External Vecta boiler. it CannOt be fitted on the
left hand side of the boiler under any circumstances.
nOtE
!
The side pellet store auger pipe is supplied in two pieces. The lower
section is supplied factory-fitted in the bottom of the side pellet store
along with the auger motor and spiral. The end of the auger spiral is
secured to the side pellet store by the packaging.
Great care must be taken when removing the packaging
holding the auger spira as the end of the auger spiral can
spring out and cause injury.
!
WaRninG
The auger extension pipe is supplied loose and must be fitted as
described in these installation instructions. Refer to Section 10.3 for
full details.
10 Side Pellet Store
10.2 Operation
When fitted to the boiler, the side pellet store auger extends from
within the side pellet store into the boiler pellet hopper.
The side pellet store is connected to the electrical controls of the
boiler. When the diaphragm contents switch fitted to the boiler pellet
hopper detects a low fuel level the side pellet store auger will be
automatically operated.
The control panel LCD screen will show ‘Fuel Low Warning’ and the
Remote Grant logo indicator (located inside the house) will also flash
(slowly) to indicate that the pellet level in the boiler hopper has fallen
to the pre-set minimum.
Pellets will be transferred from the side pellet store to the boiler pellet
hopper. This will continue until the contents switch in the boiler pellet
hopper is satisfied, at which point the side pellet store auger will stop.
Both the ‘Fuel Low Warning’ on the control panel LCD screen and the
slow flashing Grant logo indicator will be automatically cancelled.
the boiler pellet hopper will not be completely filled by the side
pellet store. the auger will only transfer pellets to the boiler
pellet hopper until the contents switch is satisfied.
nOtE
!
The side pellet store is also fitted with a diaphragm contents switch.
The side pellet store auger will only operate when this contents switch
indicates there are sufficient pellets in the side pellet store. If this level
drops below the minimum to activate the contents switch, the auger
will no longer operate to transfer pellets to the boiler pellet hopper.
In this instance, when the boiler pellet hopper contents switch detects
a low fuel level no pellets will be transferred to the boiler pellet hopper.
The control panel LCD screen will show ‘Fuel Low Warning’ and the
Remote Grant logo indicator (located inside the house) will also flash
(slowly) to indicate that the pellet level in the boiler hopper has fallen
to the pre-set minimum.
If the boiler pellet hopper is not topped up at this point, the boiler
will continue to operate for a short period before the burner is
automatically stopped.
Topping up the boiler pellet hopper with at least 20kg of pellets will
operate the contents switch and automatically re-start the burner (as
long as there is a demand present for the boiler to run). Both the ‘Fuel
Low Warning’ on the boiler control panel LCD screen and the slow
flashing Grant logo indicator will be automatically cancelled.
in order to maximise the combined pellet storage capacity of
the boiler and side pellet store, it is recommended that both the
boiler pellet hopper and the side pellet store are filled to the
top when topping-up.
nOtE
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