39
6. Remove the screw from the centre of the air
shutter disc, and re-position the disc such that
the cut-out ‘B’ (corresponding to 15 kW
output setting – See Section 3.3) is located
against the cast boss on the fan housing.
Replace the screw in the centre of the air
shutter disc and tighten.
7. Re-fit the air inlet cover to the side of the
burner and reassemble in reverse order.
7 - COMMISSIONING
D
E
F
G
H
L
M
I
Fig. 22 - 15/26 air adjuster disc
position 'C'
8 - INFORMATION FOR THE USER
The User must be advised (and demonstrated if
necessary) of the following important points:-
1 How to light and turn off the boiler and how to
operate the system controls.
2 The precautions necessary to prevent
damage to the central heating system and to the
building, in the event of the boiler not being in
operation during frost conditions.
3 The importance of servicing the boiler to
ensure safe and efficient operation. This
should normally only be required once a year.
4 The type of fuel used.
5 That any servicing or replacement of parts must
only be carried out by a suitably qualified engineer.
6 Ensure that the boiler controls and room
thermostat (if fitted) are set to the User's
requirements.
7 If the boiler is used on a sealed heating system, tell
the user the system pressure and show
them the position of the safety valve
discharge pipe.
8 Show the User how to reset the overheat thermostat
and how to restart the boiler if it goes to 'Lock-out'.
Leave this Instruction manual with the User.
To ensure efficient operation of the boiler it is
recommended that it is checked and serviced as
necessary at regular intervals. The frequency of
servicing will depend upon the particular
installation conditions and usage, but in general
once per year should be adequate.
Servicing and replacement of parts must only
be carried out by a suitably qualified engineer.
Important: Details of every service should be
entered in the Service Log, in the Boiler
Handbook. This information may be required to
validate the iQE warranty.
IMPORTANT
Before starting any work on the boiler, or fuel
supply please read the health and safety
information given in Section 14 on page 47.
9 - BOILER SERVICING
1 Check the flue terminal and ensure it is not blocked
or damaged.
2 Run the boiler and check the operation of its controls.
3 Ensure that all water/fuel system connections and
fittings are sound. Remake any joints and
check the tightness of any fittings that may be
leaking.
If the boiler is used on a sealed central heating
system, check the system pressure, check the
operation of the pressure relief valve and
check the expansion vessel air charge. See
Section 6.6. Refill, vent and re-pressurise the
system as necessary. See Section 6.11
4 Check that any ventilation openings are adequate
and are clear. See Section 4.7.
5 Remove any sludge/water from the fuel tank
by opening the sludge valve at the lower end of
the tank.
iQE Horizon Internal Oil Boiler
9.1
Important notes prior to servicing
