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11 Servicing
11.1 General
It is essential that the Grant Spira boiler
is serviced at regular intervals of no
longer than 12 months OR when the
‘
SERVICE
’ is shown on the burner
control panel display.
The burner will automatically indicate
‘SERVICE’ on the burner control panel
display once the pre-set period of
pellet feed auger run time (‘
HOURS
SERVICE
’) is achieved. Refer to Section
9.7 for details on how to access and
check this setting in the ‘
INSTAL
CLEAN
’ sub-menu of the burner
settings.
This interval is based on the auger
running time, i.e. the actual quantity of
pellets used based on the pellet feed
auger rate and pellet delivery settings.
Refer to Section 9.7 for details on how
to access and check this setting in the
‘
POWER PELLET
’ sub-menu of the
burner settings.
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.
Servicing and replacement of parts
must only be carried out by a Grant
trained installer who has successfully
completed the Grant Spira wood pellet
boiler training course.
11.2 Checks Before Servicing
BEFORE starting any service work
on the boiler or pellet storage/supply
installation:
•
Set the
ON/STANDBY
switch,
on the boiler control panel, to
STANDBY
. If the boiler was
operating, wait for it to shut-down
and ‘WAIT BOILER THERMOSTAT’
is shown on the burner control panel
display before proceeding further.
•
Isolate the electrical supply to the
hopper and boiler and remove the
fuse from the fused spur.
•
Disconnect the 5-way plug (on the
lead from the hopper) from the
socket at the left rear of the boiler.
Refer to Figure 11-1.
•
If a double boiler installation,
remove the 5-way plug from both
boilers.
•
Disconnect the 5-way plug (on
the lead from the flue fan and
solenoid) from the socket at the
right rear of the boiler. Refer to
Figure 11-2.
•
Disconnect the 4-way plug from
the socket (on the flying lead) at
the rear of the hopper.
This will allow the hopper to be moved
to give easy access to the rear of the
boiler for servicing.
11.3 Heating System
Check the boiler for any indication of
leaks from:
•
Flow and return connections
•
Automatic air vent (at rear of boiler)
•
Drain cock (at lower rear of boiler)
Remake any joints and re-check
tightness of any fitting that may be
leaking.
If boiler is part of a sealed heating
system, check the following:
•
System pressure
•
Pressure relief valve operation
•
Expansion vessel air charge
pressure (when the system
pressure is zero)
Re-fill and vent the system to the
required pressure. Refer to Section 6.
On either sealed or open-vented
systems:
•
Inspect and clean the in-line
magnetic filter in accordance
with the filter manufacturer’s
instructions.
•
Ensure that adequate corrosion
protection is present in system.
!
NOTE
Details of every service should be
entered in the Service log in the
User Instructions supplied with the
boiler.
Before starting any work on the
boiler, or on the pellet storage and
supply installation, please read the
health and safety information in
Section 14.
!
WARNING
Figure 11-2:
Disconnecting fan/
solenoid 5-way plug
Figure 11-1:
Disconnecting hopper
5-way plug
