Parts replacement
68 Instructions for installation and servicing ecoTEC 839592_13
9
9 Parts replacement
The tasks listed below in this section may be carried out
only by a competent person approved at the time by the
Health and Safety Executive and in accordance with the
Gas Safety (Installation and Use) Regulations 1998.
> Only us
e genuine spare parts for repairs.
> Make sure the parts are correctly fitted and that their
original position and alignment are retained.
9.1 Safety instructions
a
Danger!
Risk of personal injury and/or material
damage as a r
esult of improper installation!
You need to follow the corresponding safety
instructions in order to safely replace a com-
ponent.
> Each time the components are replaced,
comply with the safety instructions below.
> Put the appliance out of operation.
e
Danger!
Risk of death from electric shock through
contact with live connections!
The supply terminals of the unit are still live
even if the main boiler switch is turned off.
> Disconnect the appliance from the power
mains by removing the mains plug or de-
energise the appliance using a separator
with a contact opening of at least 3 mm
(e.g. fuses or circuit breakers).
> Close the service valve in the gas supply as well as
the service valves in the heating flow and return pipe.
> Close the service valve in the cold water supply line
(combination boilers only).
> Empty the appliance if you want to replace water-
bearing components of the appliance.
> Make sure that no water drops on live components
(e.g. switch box etc.).
> Use only new seals and O-rings.
> After completing the work, check for gas leaks and
perform a function check (see section 7.6).
> Always check earth continuity, polarity and resistance
to earth with a multimeter after any service work and
after exchanging any electrical component.
9.2 Replacing burner
a
Danger!
Risk of personal injury and/or material
damage as a result of improper installation!
You need to follow the corresponding safety
instructions in order to safely replace the
component.
> Before replacing the component, comply
with the safety instructions in section 9.1.
> Dismantle the burner module as described in Section
7.2.1.
1
Fig. 9.1 Replacing burner
> Loosen the 4 screws (1) on burner, and remove the
burner.
> Mount the new burner with a new seal. Ensuring that
the notch in the burner aligns with the burner viewing
window.
> Install the burner module as described in Section
7.2.4.
> After completing the work, check for gas leaks and
perform a function check (see section 7.6).
9.3 Replacing fan or gas valve
a
Danger!
Risk of personal injury and/or material
damage as a result of improper installation!
You need to follow the corresponding safety
instructions in order to safely replace the
component.
> Before replacing the component, comply
with the safety instructions in section 9.1.
> Turn off the boiler.
> Isolate the electrical supply to the boiler.
> Remove the air intake pipe (Fig. 7.1, Pos. 2).
> Loosen the gas supply pipe on the gas fitting (Fig. 7.2,
Pos. 3).
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