Commissioning
47
10 Commissioning
It is important that the following
commissioning procedure is carried out
following installation to ensure safe and
efficient operation of the boiler.
For double boiler installations this
procedure must be carried out in full on
both boilers.
10.1 Equipment Required
To carry out a complete and
comprehensive commissioning of the
Grant Spira wood pellet boiler the
following equipment is required.
• Draught meter.
• Flue gas analyser (with “wood
pellet” fuel setting).
• Container of at least 1 litre capacity.
10.2 Preliminary Inspection
Before switching on the power supply
to the hopper and boiler check the
following:
10.2.1 Heating System
Check the following:
• That corrosion inhibitor and, where
necessary antifreeze, is present in
the system water. Refer to Section
4.6.
• That a magnetic in-line filter has
been fitted in the system. Refer to
Section 4.6.
• The auto air vent (supplied with the
boiler) is open.
• The boiler drain cock (supplied with
the boiler) is closed.
• Both the boiler and heating system
is filled and vented.
• On sealed systems the expansion
vessel charge pressure is correct
and system is filled to correct
pressure.
• For any leaks at joints, fittings, etc.
10.2.2 Electrical Connections
Check the following:
• The 5-way plug (from the hopper) is
fully inserted in the socket at the
top left rear of boiler. Refer to Figure
8-3.
• The 5-way plug (from the flue fan
and washdown solenoid valve) is
fully inserted in the socket at the
top right rear of the boiler. Refer to
Figure 8-2.
• The two 7-way plugs (from the
boiler control panel) are fully
inserted into the corresponding two
lower connections on the left side of
the burner. Refer to Figure 8-4.
• The 6-way plug (from the pellet
auger) is fully inserted into the
upper connection on the left side of
the burner. Refer to Figure 8-4.
On double boiler installations, repeat
the process for the second boiler.
10.2.3 Washdown System
Check the following:
• The washdown system manifold
pipe is correctly fitted into either the
right or left side of the boiler, as
required to suit the type of hopper
used.
• The solenoid valve head is correctly
fitted and secured in position with
the steel clip provided with the
boiler.
• The solenoid valve is connected to
an uninterrupted mains water
supply via the flexible hose and
valve (with integral check valve)
provided with the boiler.
• All valves in this water supply are
open.
On double boiler installations, repeat
the process for the second boiler.
10.2.4 Condensate Disposal System
Check the following:
• The condensate trap (supplied with
the boiler) and condensate disposal
pipework has been fitted correctly.
Refer to Section 5.
• If a condensate pump is fitted, that
a condensate holding tank of at
least 40 litres capacity has also
been installed. Refer to Section 5.
10.2.5 Flue System
Check the following:
• The draught stabiliser damper, on
the fan box, is unobstructed and
free to move. Ensure that the damper
locking lever is in the ‘unlocked’
position’. Refer to Figure 10-1.
• The flue system conforms to the
relevant requirements of The
Building Regulations Approved
Document J for solid fuel appliances.
9.2.6 Combustion Ventilation
Check that the combustion air supply
conforms to the relevant requirements
of The Building Regulations Approved
Document J, for solid fuel appliances
with a draught stabiliser. Refer to
Section 7.1.
10.3 Boiler
10.3.1 Control Panel
Isolate the electrical power to the
hopper and boiler.
Unscrew and remove the six self
tapping screws securing the boiler
control panel cover and lift the cover off
the control panel.
Check the following:
• That both the overheat thermostat
probe and thermistor bulb are fully
inserted in the boiler waterway
pocket, and the retaining clip is
fitted. Refer to Figure 10-2.
• The condition of thermistor cable
and thermostat capillary, i.e. not
damaged, broken or kinked.
Refit the control panel cover and
secure with the six screws
previously removed.
10.3.2 Combustion Chamber
Open front access cleaning door and
check:
• The ash pan is empty and correctly
positioned on the base of the
combustion chamber.
• The baffle (in the top of the
combustion chamber) is correctly
located on the fixing brackets at
both sides. Refer to Figure 10-3.
Close the front access cleaning door
and ensure that door catch is fully
engaged (to activate door cut-out
switch).
Figure 10-1: Draught stabiliser
Figure 10-2: Boiler control panel
(cover removed)
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